Respiratory pressure therapy system

Abstract

An apparatus for humidifying a flow of breathable gas includes a water reservoir including a chamber configured to hold a volume of water, a water reservoir dock configured and arranged to receive the water reservoir in an operative position, and a latch movable between (1) a locked position for releasably locking the water reservoir to the water reservoir dock in the operative position and (2) an unlocked position for allowing insertion of the water reservoir into the water reservoir dock and removal of the water reservoir from the water reservoir dock.

Description

[0001] This application is a divisional application of patent application number 201980070669.9, filed on September 26, 2019, entitled "Respiratory Pressure Therapy System". Patent application 201980070669.9 is an application that has entered the Chinese national phase of PCT international application PCT / IB2019 / 058184.

[0002] This patent document contains a portion of copyrighted material. The copyright holder does not object to the reproduction of these patent documents or patent disclosures by any person in the form they appear in Patent and Trademark Office documents or records, but otherwise reserves all copyright rights.

[0003] 1. Cross-references to related applications

[0004] This application claims the benefit of U.S. Provisional Application No. 62 / 737,719, filed September 27, 2018, and U.S. Provisional Application No. 62 / 750,715, filed October 25, 2018, the entire contents of which are incorporated herein by reference. Background Technology 2.1 Technical Field

[0006] This technology relates to one or more of the following: detection, diagnosis, treatment, prevention, and improvement of respiratory-related conditions. Specifically, this technology relates to medical devices or equipment and their uses.

[0007] 2.2 Description of relevant technologies

[0008] 2.2.1 The Human Respiratory System and Its Disorders

[0009] The human respiratory system facilitates gas exchange. The nose and mouth form the airway entrance for the patient.

[0010] The airways consist of a series of branching tubes, which become narrower, shorter, and more numerous as they penetrate deeper into the lungs. The primary function of the lungs is gas exchange, allowing oxygen to enter the venous blood from the air and expelling carbon dioxide. The trachea divides into the left and right main bronchioles, which eventually further divide into terminal bronchioles. The bronchi form the conduction airways but do not participate in gas exchange. Further branching of the airways leads to the respiratory bronchioles and ultimately to the alveoli. The alveolar region of the lungs is where gas exchange occurs and is called the respiratory zone. See *Respiratory Physiology*, 9th edition, published in 2011 by John B. West, Lippincott Williams & Wilkins.

[0011] A range of breathing disorders exist. Some disorders may be characterized by specific events, such as apnea, hypoventilation, and hyperventilation.

[0012] Obstructive sleep apnea (OSA) is a form of sleep-disordered breathing (SDB) characterized by events involving closure or obstruction of the upper airway during sleep. It arises from a combination of abnormally small upper airway size and normal loss of muscle tone in the areas of the tongue, soft palate, and posterior oropharyngeal walls during sleep. The condition causes the affected patient to stop breathing, typically for periods ranging from 30 to 120 seconds, sometimes 200 to 300 times per night. This often leads to excessive daytime sleepiness and can contribute to cardiovascular disease and brain damage. Concomitant symptoms are common, especially in middle-aged overweight men, but those affected may not be aware of the problem. See U.S. Patent 4,944,310 (Sullivan).

[0013] Cheyne-Stokes respiration (CSR) is another form of sleep-disordered breathing. CSR is a dysregulation of the patient's respiratory controller, characterized by rhythmic alternations of waxing and waning ventilation known as CSR cycles. CSR is characterized by repetitive hypoxia and reoxygenation of arterial blood. Due to the repetitive hypoxia, CSR can be harmful. In some patients, CSR is associated with repetitive awakenings from sleep, leading to severe sleep disruption, increased sympathetic activity, and increased afterload. See U.S. Patent 6,532,959 (Berthon-Jones).

[0014] Obesity hyperventilation syndrome (OHS) is defined as a combination of severe obesity and chronic hypercapnia at wakefulness, without other known causes of hypoventilation. Symptoms include dyspnea, morning headache, and excessive daytime sleepiness.

[0015] Chronic obstructive pulmonary disease (COPD) encompasses any of a group of lower airway diseases that share certain common characteristics. These diseases include increased airflow resistance, prolonged expiratory phase of breathing, and loss of normal lung elasticity. Examples of COPD include emphysema and chronic bronchitis. COPD is caused by chronic smoking (a major risk factor), occupational exposure, air pollution, and genetic factors. Symptoms include exertional dyspnea, chronic cough, and sputum production.

[0016] Neuromuscular disease (NMD) is a broad term encompassing many conditions and ailments that impair muscle function directly through intrinsic muscle pathology or indirectly through neuropathology. Some NMD patients are characterized by progressive muscle damage that leads to loss of mobility, wheelchair use, dysphagia, respiratory muscle weakness, and ultimately death from respiratory failure. Neuromuscular disorders can be classified as rapidly progressive or slowly progressive: (i) rapidly progressive disorders: characterized by muscle damage that worsens over months and leads to death within years (e.g., amyotrophic lateral sclerosis (ALS) and Duchenne muscular dystrophy (DMD) in adolescents); (ii) variable or slowly progressive disorders: characterized by muscle damage that worsens over years and only slightly shortens life expectancy (e.g., limb-girdle type, facioscapulohumeral type, and ankylosing spondylitis). Symptoms of respiratory failure in NMD include: progressive general weakness, dysphagia, shortness of breath during and at rest, fatigue, somnolence, morning headache, difficulty concentrating, and mood swings.

[0017] The chest wall is a group of chest wall deformities that result in inefficient connection between the respiratory muscles and the thoracic cavity. These disorders are typically characterized by restrictive defects and have the potential to cause chronic hypercapnia-related respiratory failure. Scoliosis and kyphosis can cause severe respiratory failure. Symptoms of respiratory failure include: shortness of breath during exercise, peripheral edema, orthopnea, recurrent chest infections, morning headache, fatigue, poor sleep quality, and loss of appetite.

[0018] A range of treatments have been used to treat or improve these symptoms. Furthermore, other healthy individuals may utilize these treatments to prevent respiratory distress. However, these treatments have many drawbacks.

[0019] 2.2.2 Treatment

[0020] Nasal continuous positive airway pressure (CPAP) therapy has been used to treat obstructive sleep apnea (OSA). It is assumed that CPAP acts as an air splint and can prevent upper airway obstruction by pushing the soft palate and tongue forward and away from the posterior oropharyngeal wall. OSA treatment with nasal CPAP can be voluntary; therefore, patients may choose not to adhere to treatment if they find the device used to set up such treatment to be uncomfortable, difficult to use, expensive, or unsightly, among other things.

[0021] Noninvasive ventilation (NIV) provides ventilatory support to patients through the upper airway to help them breathe adequately and maintain appropriate oxygen levels in the body by performing some or all of the work of breathing. This ventilatory support is installed via a patient interface. NIV has been used to treat CSR, OHS, COPD, MD, and chest wall disorders.

[0022] Noninvasive ventilation (IV) provides ventilation support for patients who are unable to breathe effectively on their own and can be set up using a tracheostomy tube.

[0023] 2.2.3 Diagnostic and Treatment Systems

[0024] These therapies can be set up by treatment systems or devices. Systems and devices can also be used to diagnose conditions without treating them.

[0025] The treatment system may include a respiratory pressure therapy device (RPT device), an air circuit, a humidifier, a patient interface, and data management.

[0026] 2.2.3.1 Patient Interface

[0027] A patient interface can be used, for example, to interface a breathing apparatus to its user by setting an airflow. Airflow can be set via a mask to the user's nose, mouth, or both nose and mouth, via a tube to the mouth, or via a tracheostomy tube to the trachea. Depending on the treatment to be applied, the patient interface can form a seal with, for example, an area of ​​the patient's face, thereby facilitating the delivery of gas at a pressure sufficiently different from ambient pressure (e.g., a positive pressure of approximately 10 cm H2O) to achieve the treatment. For other forms of treatment, such as oxygen delivery, the patient interface may not include a seal sufficient to facilitate the delivery of a gas supply at a positive pressure of approximately 10 cm H2O to the airway.

[0028] The design of the patient interface presents numerous challenges. The face has a complex three-dimensional shape. The size and shape of the nose vary greatly between individuals. Because the head comprises bones, cartilage, and soft tissues, different areas of the face respond differently to mechanical forces. The jaw or mandible can move relative to the other bones of the skull. The entire head can move during the duration of respiratory therapy.

[0029] Due to these challenges, some face shields suffer from one or more of the following problems: obtrusive, unattractive, expensive, incongruous, difficult to use, and uncomfortable, especially when worn for extended periods or when the patient is unfamiliar with the system. For example, face shields designed solely for pilots, face shields designed to be part of personal protective equipment (such as filtering face shields), SCUBA face shields, or face shields designed to administer anesthetics may be acceptable for their original applications, but are not as comfortable as ideal for prolonged wear (e.g., several hours). This discomfort can lead to decreased patient adherence to treatment. This is especially true if the face shield is worn during sleep.

[0030] Assuming patient adherence, nasal CPAP therapy is highly effective in treating certain breathing difficulties. Patients may not adhere to treatment if the mask is uncomfortable or difficult to use. Since patients are generally advised to clean their masks regularly, if the mask is difficult to clean (e.g., difficult to assemble or disassemble), patients may be unable to clean it, which could affect adherence.

[0031] While masks designed for other applications (such as pilots) may not be suitable for treating sleep apnea, masks designed for treating sleep apnea may be suitable for other applications.

[0032] For these reasons, different fields have emerged for patient interfaces used to deliver nasal CPAP during sleep.

[0033] 2.2.3.2 Respiratory Pressure Therapy (RPT) Device

[0034] Pneumatic generators are known in applications such as industrial-scale ventilation systems. However, pneumatic generators for medical applications have specific requirements that more general pneumatic generators cannot meet, such as the reliability, size, and weight requirements of medical devices. Furthermore, even devices designed for medical use may suffer from disadvantages, including one or more of the following: comfort, noise, ease of use, efficiency, size, weight, manufacturability, cost, and reliability.

[0035] RPT devices typically include a pressure generator, such as a motor-driven blower or a compressed gas reservoir, and are configured to supply airflow to the patient's airway. In some cases, the airflow can be set to positive pressure in the patient's airway. The outlet of the RPT device is connected via an air circuit to a patient interface such as those described above.

[0036] 2.2.3.3 Humidifier

[0037] Delivering unhumidified airflow can lead to airway dryness. Using a humidifier with an RPT device and patient interface to generate humidified gas minimizes nasal mucosal dryness and increases patient airway comfort. Furthermore, in colder climates, warm air applied to the patient interface and the facial area around the patient interface is generally more comfortable than cold air. Many artificial humidification devices and systems are known; however, they do not meet the specific requirements of medical humidifiers.

[0038] Medical humidifiers are used to increase the humidity, temperature (or both) of an airflow relative to ambient air, typically when the patient is asleep or resting (e.g., in a hospital). Therefore, medical humidifiers are preferably small for bedside placement and are preferably configured to humidify, heat, or humidify and heat the airflow delivered to the patient, without humidifying, heating, or humidifying and heating the patient's surrounding environment. Room-based systems (e.g., saunas, air conditioners, evaporative coolers, etc.) can also humidify the air inhaled by the patient; however, they also humidify, heat, or humidify and heat the entire room, which can make the occupant uncomfortable. Furthermore, medical humidifiers may have stricter safety constraints than industrial humidifiers.

[0039] While many medical humidifiers are known, they may have one or more drawbacks. Some medical humidifiers may not provide sufficient humidification, and some may be difficult or inconvenient for patients to use. Summary of the Invention

[0040] This technology relates to the provision of medical devices for diagnosing, improving, treating or preventing respiratory disorders, which have one or more of the following: improved comfort, cost, efficacy, ease of use and manufacturability.

[0041] A first aspect of this technology relates to a device for treating respiratory disorders, the device comprising: a housing, within which a pressure generator is configured to supply an airflow; a device outlet fluidly coupled to the pressure generator and configured to be coupled to an air circuit to deliver the airflow to a patient interface for treating the respiratory disorder; and a wireless data communication interface integrated with the housing, the wireless data communication interface being configured to connect to another device or network.

[0042] One aspect of this technology relates to an apparatus for humidifying a breathable gas flow, the apparatus comprising a heater plate; a chamber in fluid communication with the breathable gas flow; and a reservoir including a conductive portion thermally bonded to the heater plate, the apparatus being configured such that changing a first pressure of the breathable gas flow in the chamber alters the level of thermal bonding between the conductive portion and the heater plate.

[0043] In one form, the reservoir further includes an inlet and an outlet.

[0044] In one form, the thermal bonding occurs along a first direction that is substantially perpendicular to the surface of the conductive portion.

[0045] In one embodiment, the device is further configured to change the magnitude of the force between the conductive portion and the heating plate in a first direction as the first pressure changes.

[0046] In one form, a chamber is part of a storage container.

[0047] In one form, the chamber further includes a variable portion.

[0048] In one embodiment, the device further includes a docking member configured to receive a storage device, and the docking member includes a heating plate.

[0049] In one embodiment, the docking member further includes a cavity having a top portion and a bottom portion, the bottom portion having a heater plate located thereon, the cavity being configured to retain at least a portion of the reservoir therein.

[0050] In one form, the variable portion is compressed so that the reservoir can be inserted into the cavity of the mating part.

[0051] In one form, the top portion of the cavity is movable between an open configuration and a closed configuration to facilitate the insertion of a reservoir into the cavity.

[0052] In one configuration, the variable portion is configured to adjust its dimensions as the first pressure changes to alter the level of thermal bonding between the heater plate and the conductive portion.

[0053] In one form, the reservoir further includes a base and a cover, the base being configured to hold a volume of liquid and including a conductive portion.

[0054] In one form, the base and the cover are pivotally connected together.

[0055] In one form, the variable portion forms a seal between the base and the cap.

[0056] In one form, the reservoir further includes a latch that secures the base and the cover together.

[0057] In one form, the reservoir further includes at least one handle to facilitate coupling the reservoir to the docking member.

[0058] In one embodiment, the reservoir further includes a retaining clip adapted to engage with a recess on the mating member to hold the reservoir within the cavity of the mating member.

[0059] In one configuration, the reservoir is designed to prevent refilling when it is connected to a mating part.

[0060] In one configuration, when the reservoir is connected to the docking member, at least a portion of the reservoir is prevented from opening.

[0061] In one form, the reservoir includes a refill cap.

[0062] In one embodiment, the device further includes an overflow protection element configured to prevent water from filling the reservoir beyond a predetermined maximum volume.

[0063] In one form, the overflow protection element includes at least one orifice formed in the wall of the reservoir, which defines the outflow path of water when a predetermined maximum volume of water is exceeded.

[0064] In one form, the overflow protection element includes an inclined profile in the side profile of the reservoir wall, the inclined profile defining the outflow path of water when a predetermined maximum volume of water is exceeded.

[0065] One aspect of this technology relates to a method for altering the thermal contact between a heating plate and a reservoir in a humidification system to humidify a breathable gas flow, the method comprising altering the pressure of the breathable gas flow in the reservoir, which is in fluid communication with the breathable gas flow, to alter the force between the heating plate and the reservoir.

[0066] Another aspect of this technology relates to an apparatus for humidifying a breathable gas flow, the apparatus comprising a heating plate and a reservoir, the reservoir including an inlet for receiving the breathable gas flow, an outlet and a conductive portion in thermal contact with the heating plate, and wherein the apparatus is configured such that changing the pressure of the breathable gas flow in the reservoir alters the force between the heating plate and the conductive portion in the direction of thermal contact.

[0067] In one form, the device further includes a docking component that can be connected to a storage device.

[0068] In one configuration, the mating element is configured to restrict the opening of the reservoir in the direction of thermal contact.

[0069] Another aspect of this technology relates to a reservoir configured to contain a volume of liquid for humidifying and pressurizing a breathable airflow, the reservoir comprising: a base portion including a conductive portion; a cover portion including an inlet and an outlet; and a seal, wherein the base portion and the cover portion are pivotally engaged and can be configured in an open configuration and a closed configuration, while being pivotally engaged, and when the reservoir is in the closed configuration, the seal sealably engages the base portion and the cover portion.

[0070] In one form, the sealing portion includes an outlet pipe and a baffle, the baffle being configured to connect to the inlet pipe.

[0071] Another aspect of this technology relates to an apparatus for humidifying a breathable gas flow, the apparatus comprising a heater plate and a reservoir, the reservoir including an inlet, an outlet, a variable portion, and a conductive portion in thermal contact with the heater plate, wherein the apparatus is configured such that changing the height of the variable portion alters the level of thermal engagement between the conductive portion and the heater plate.

[0072] In one form, the device is configured such that thermal bonding occurs in a first direction substantially perpendicular to the surface of the conductive portion.

[0073] Another aspect of this technology relates to a method for changing the level of thermal bonding in a humidification device, the method comprising (i) thermally bonding a heater plate to a conductive portion of a reservoir, and (ii) changing the height of a variable portion of the reservoir to change the level of thermal bonding between the conductive portion and the heater plate.

[0074] A reservoir for maintaining a predetermined maximum volume of water includes a base portion comprising an overflow protection element, wherein the reservoir is configured to switch between an open configuration and a closed configuration, and when the reservoir is in the open configuration, the overflow protection element prevents the reservoir from filling above the maximum volume of water.

[0075] In one configuration, the sealing portion is configured to sealably engage the cover portion and the base portion when the reservoir is in the closed configuration.

[0076] In one embodiment, the overflow protection element is configured such that when the maximum water capacity is exceeded and the base portion is in its normal operating orientation, excess water exceeding the maximum water volume will overflow through the overflow protection element.

[0077] In one form, the overflow protection element is at least one orifice that defines the outflow path of water when the humidifier reservoir is in the open configuration and exceeds the maximum water capacity of the base portion.

[0078] In one form, the overflow protection element is a sloping profile in the side profile of the base, which defines the outflow path of water when the humidifier reservoir exceeds the maximum water capacity of the base in the open configuration.

[0079] Another aspect of this technology relates to a method for preventing overfilling in a humidifier reservoir, the method comprising (i) incorporating an overfill protection element into a base portion of the humidifier reservoir, and (ii) configuring the overfill protection element such that when the maximum water capacity is exceeded and the base portion is in its normal operating orientation, excess water exceeding a predetermined maximum volume will overflow through the overfill protection element.

[0080] In one form, the overflow protection element includes at least one orifice.

[0081] In one form, the overflow protection element includes a slanted profile.

[0082] Another aspect of the technology relates to a reservoir configured to maintain a predetermined maximum volume of water, comprising: a plurality of walls forming a cavity configured to maintain a predetermined maximum volume of water; an inlet pipe configured to deliver a supply of breathable gas into the cavity, the inlet pipe having an inner inlet end and an outer inlet end; and an outlet pipe configured to deliver a humidified supply of breathable gas from the cavity, the outlet pipe having an inner outlet end and an outer outlet end, wherein the inner inlet end and the inner outlet end are located within the cavity, and the outer inlet end and the outer outlet end are positioned in one of the plurality of walls of the cavity; a first axis defined by the inner inlet end and the outer inlet end; and a second axis defined by the inner outlet end and the outer outlet end, wherein when the reservoir is tilted at approximately 90° relative to a normal operating orientation, the first axis is at a first angle such that the inner inlet end and the outer inlet end are positioned at different heights, such that the predetermined maximum volume of water is below at least one of the inner inlet end or the outer inlet end to prevent water from overflowing through the inlet pipe.

[0083] In one embodiment, the reservoir is further configured such that when the reservoir is tilted at approximately 90° relative to its normal operating orientation, the second axis is at a second angle, such that the inner and outer ends of the outlet are positioned at different heights, such that a predetermined maximum volume of water is below at least one of the inner or outer ends of the outlet, to prevent water from overflowing through the outlet pipe.

[0084] In another aspect of this technology, a swing latch can be used to fasten the bucket lid to the base of the bucket.

[0085] In another aspect of this technology, a swing latch can be used to fasten the barrel to the docking member.

[0086] In the example, (a) the locking end may include one or more downwardly extending retaining protrusions, (b) the mating member locking recess in the upper surface of the mating member may be shaped to receive the corresponding protrusion, (c) the swing latch may be biased to a closed position in which the retaining protrusion is in a lowered position and in which the retaining protrusion can engage in the mating member locking recess, (d) the front may be tapered to allow the swing latch to rise without manual intervention when engaging the mating member wall at the tapered front, (e) the release barrel may be able to press down the button end again to raise the retaining protrusion, disengage it from the mating member locking recess and allow the barrel to slide out, and / or (f) various spring configurations may be adapted to bias the locking end to the closed position.

[0087] In other forms of this technology, the humidifier tank (or reservoir) can be coupled to the reservoir docking part of the PAP device. These forms can share various features, structures, and characteristics of the aforementioned tank, so that the same features need not be described repeatedly.

[0088] On the other hand, the inlet is formed separately from the humidifier barrel lid and is subsequently attached to the top of the lid.

[0089] On the other hand, the retaining protrusion for engaging the locking recess of the humidifier docking part is located on the swing latch.

[0090] On another front, the tongue key is used for the engagement between the bucket and the humidifier docking parts.

[0091] On the other hand, the flat surface engages the outside of the humidifier docking part near the locking recess.

[0092] On the other hand, the lid's descent utilizes opposing clips to hold the humidifier lid on the base of the humidifier.

[0093] On the other hand, the cam slide lock is used to pull the humidifier barrel to the fully seated position and lock the barrel there.

[0094] On the other hand, the cam slide lock engages with the latch and is used to pull the bucket to the fully seated position and lock the bucket there.

[0095] On the other hand, the rotating rod extends through the top plate of the docking member to engage the barrel retaining feature formed on the barrel lid. When the barrel retaining feature is rotated, the barrel retaining feature pulls the barrel to the fully seated position.

[0096] On the other hand, the release knob unfolds through the top plate of the docking piece to engage the lid, thus preventing the lid from returning to the unpressed state until the release knob is rotated.

[0097] On the other hand, a release knob or rotating wedge is arranged on the barrel itself to move the barrel between the pressed and unpressed states.

[0098] On the other hand, the latch on the top plate of the dock engages with the bucket lid to keep the bucket in the fully seated position.

[0099] On the other hand, a pivotable latch is formed on the barrel lid and engages with a latch on the top plate of the mating part.

[0100] Another aspect of this technology relates to a device for treating respiratory disorders, the device comprising a housing; a pneumatic block including an air path; a pressure generator located in the pneumatic block and configured to supply an airflow; a device outlet fluidly coupled to the pressure generator and configured to be coupled to an air circuit to deliver an airflow to a patient interface for treating the respiratory disorder; and a chassis configured to position the housing, the pneumatic block, and the device outlet, the chassis including a docking part for receiving a muffler or humidifier reservoir.

[0101] Another aspect of this technology relates to a CPAP system including a humidifier, a patient interface, and an air delivery tube for delivering humidified air to the patient interface. In one example, the humidifier is integrated with an RPT device configured to generate a positive pressure airflow.

[0102] Another aspect of this technology relates to a water reservoir for a device for humidifying a breathable gas stream.

[0103] Another aspect of this technology relates to a water reservoir docking fitting for a device for humidifying a breathable gas flow.

[0104] Another aspect of this technology relates to an apparatus for humidifying a breathable gas stream, the apparatus comprising: a water reservoir including a chamber configured to hold a volume of water; and a water reservoir docking part configured and arranged to receive the water reservoir in an operating position.

[0105] Another aspect of this technology relates to an apparatus for humidifying a breathable gas stream, the apparatus comprising: a water reservoir including a chamber configured to maintain a volume of water; a water reservoir docking part configured and arranged to receive the water reservoir in an operating position; and an air delivery conduit configured to deliver a breathable gas stream, already humidified in the water reservoir, to a patient interface.

[0106] Another aspect of this technology relates to an apparatus for humidifying a breathable gas stream, the apparatus comprising: a water reservoir including a chamber configured to hold a volume of water; a water reservoir docking member configured and arranged to receive the water reservoir in an operating position; and a latch movable between (1) a locked position and (2) an unlocked position, wherein the locked position is used to releasably lock the water reservoir to the water reservoir docking member in the operating position, and the unlocked position is used to allow insertion of the water reservoir into the water reservoir docking member and removal of the water reservoir from the water reservoir docking member.

[0107] In one example, the latch is pivotally movable between a locked position and an unlocked position. In one example, the latch is disposed on the cover of the water reservoir and is movable to engage the water reservoir docking piece in the locked position. In one example, the latch is slidably movable between a locked position and an unlocked position.

[0108] Another aspect of this technology relates to a water reservoir for a device for humidifying a breathable gas stream, the water reservoir comprising: a base; a cover connected to the base, the cover and the base forming a chamber configured to retain a volume of water; an inlet pipe arranged to receive an inlet for receiving a breathable gas stream entering the chamber; and an outlet pipe arranged to deliver an outlet for conveying a humidified breathable gas stream from the chamber. The outlet pipe includes a construction integral with the cover. The inlet pipe includes a separate and distinct construction from the cover and is subsequently attached to the top of the cover. The inlet pipe includes an inlet portion and an outlet portion, the inlet portion including an inlet end and the outlet portion including an outlet end, and when the inlet pipe is attached to the cover, the inlet end is disposed outside the chamber and the outlet end is disposed inside the chamber.

[0109] In one example, the inlet portion extends laterally to the outlet portion. In one example, the top of the cap includes an inlet seat configured to receive the inlet portion of the inlet tube. In one example, the top of the cap includes an opening configured to receive the outlet portion of the inlet tube passing through it.

[0110] Another aspect of this technology relates to an apparatus for humidifying a breathable gas stream, the apparatus comprising: a water reservoir including a chamber configured to hold a volume of water; a water reservoir docking member configured and arranged to receive the water reservoir in an operating position; and a pivotable latch pivotally movable between a (1) locked position and a (2) unlocked position, wherein the locked position is used to releasably lock the water reservoir to the water reservoir docking member in the operating position, and the unlocked position is used to allow insertion of the water reservoir into the water reservoir docking member and removal of the water reservoir from the water reservoir docking member. The pivotable latch is disposed on a cover of the water reservoir and is movable to engage the water reservoir docking member in the locked position.

[0111] In one example, the pivotable latch includes one or more retaining protrusions adapted to engage in the locked position within a corresponding locking recess disposed on the water reservoir or the water reservoir mating member. In one example, each retaining protrusion includes a tapered shape along its front end. In one example, the pivotable latch is biased to the locked position. In one example, the pivotable latch is biased to the unlocked position.

[0112] Another aspect of this technology relates to an apparatus for humidifying a stream of breathable gas, the apparatus comprising: a water reservoir including a chamber configured to hold a volume of water, the water reservoir including an inlet pipe arranged to provide an inlet for receiving a stream of breathable gas entering the chamber, and an outlet pipe arranged to provide an outlet for delivering a humidified stream of breathable gas from the chamber; a water reservoir docking fitting configured and arranged to receive the water reservoir in an operating position; and a pivotable latch pivotally movable between (1) a locked position and (2) an unlocked position, wherein the locked position is used to releasably lock the water reservoir to the water reservoir docking fitting in the operating position, and the unlocked position is used to allow insertion of the water reservoir into the water reservoir docking fitting and removal of the water reservoir from the water reservoir docking fitting. The pivotable latch is disposed to the water reservoir docking fitting and is movable to engage the water reservoir in the locked position.

[0113] In one example, the pivotable latch includes one or more retention protrusions adapted to engage in the locked position within a corresponding locking recess provided in the water reservoir or the water reservoir docking member.

[0114] Another aspect of this technology relates to an apparatus for humidifying a breathable gas flow, the apparatus comprising: a water reservoir including a chamber configured to maintain a certain volume of water; a water reservoir docking member configured and arranged to receive the breathable gas flow; and a keyway arrangement configured and arranged to guide the water reservoir to an operating position, the keyway arrangement forming keyways extending in both horizontal and vertical directions.

[0115] In one example, the keyway arrangement includes a tongue on each side of the water reservoir, and a top keyway and a bottom keyway formed on each side of the water reservoir docking member, which are configured to receive the corresponding tongue.

[0116] Another aspect of this technology relates to a water reservoir for a device for humidifying a breathable gas stream, the water reservoir comprising a base and a cover connected to the base. The base and the cover form a chamber configured to hold a volume of water. The cover includes a first clip on one side of the cover and a second clip on the opposite side of the cover, and each of the first clip and the second clip is configured and arranged to releasably interlock with a corresponding protrusion disposed on the opposite side of the base in a snap-fit ​​engagement.

[0117] Another aspect of this technology relates to a device for humidifying a breathable gas stream, the device comprising: a water reservoir including a chamber configured to hold a volume of water; and a water reservoir docking member configured and arranged to receive the water reservoir in an operating position. The water reservoir includes one or more retaining protrusions adapted to engage in the operating position within corresponding locking recesses provided to the water reservoir docking member. Each retaining protrusion includes a flat surface configured and arranged to engage the exterior of the water reservoir docking member adjacent to the corresponding locking recess during insertion of the water reservoir.

[0118] Another aspect of this technology relates to an apparatus for humidifying a breathable gas stream, the apparatus comprising: a water reservoir including a chamber configured to hold a volume of water; a water reservoir docking part configured and arranged to receive the water reservoir in an operating position; and a sliding latch slidably movable between a (1) locked position and a (2) unlocked position, wherein the locked position is used to releasably lock the water reservoir to the water reservoir docking part in the operating position, and the unlocked position is used to allow insertion of the water reservoir into the water reservoir docking part and removal of the water reservoir from the water reservoir docking part.

[0119] In one example, the sliding lock is configured to interact with a ramp or cam surface as it moves into the locked position.

[0120] Another aspect of this technology relates to a device for humidifying a breathable gas stream, the device comprising: a compressible water reservoir including a chamber configured to hold a volume of water; and a water reservoir docking member configured and arranged to receive the compressible water reservoir in an operating position. The compressible water reservoir includes a rotating wedge configured and arranged to expand and collapse the compressible water reservoir to lock and release the compressible water reservoir into the water reservoir docking member.

[0121] Of course, some of these aspects can form sub-aspects of this technology. Moreover, various sub-aspects, aspects, or both of these can be combined in various ways and also constitute additional aspects or sub-aspects of this technology.

[0122] Other features of the present technology will become apparent from the following detailed description, abstract, drawings and claims. Attached Figure Description

[0123] This technology is illustrated by way of example and not limitation in the figures, and similar reference numerals in the figures refer to similar elements, including:

[0124] 4.1 Treatment System

[0125] Figure 1a illustrates a system for a patient 1000 including a patient interface 3000 in the form of a nasal pillow, which receives a positive pressure air supply from an RPT device 4000. The air from the RPT device is humidified in a humidifier 5000 and delivered to the patient 1000 along an air circuit 4170. A bed companion 1100 is also shown.

[0126] Figure 1b illustrates a system for a patient 1000 including a patient interface 3000 in the form of a nasal mask, which receives a positive pressure air supply from an RPT device 4000. The air from the RPT device is humidified in a humidifier 5000 and delivered to the patient 1000 along an air circuit 4170.

[0127] Figure 1c illustrates a system for a patient 1000 including a patient interface 3000 in the form of a full-face mask, which receives a positive pressure air supply from an RPT device 4000. The air from the RPT device is humidified in a humidifier 5000 and delivered to the patient 1000 along an air circuit 4170.

[0128] 4.2 Respiratory System and Facial Anatomy

[0129] Figure 2a shows a schematic diagram of the human respiratory system, including the nasal cavity and oral cavity, larynx, vocal cords, esophagus, trachea, bronchi, lungs, alveolar sacs, heart, and diaphragm.

[0130] 4.3 Patient Interface

[0131] Figure 3a shows a patient interface in the form of a nasal mask according to the present technology.

[0132] 4.4 Respiratory waveform

[0133] Figure 4 The diagram shows a typical breathing waveform of a person during sleep.

[0134] 4.5RPT device and humidifier

[0135] Figure 5a An exploded perspective view of one form of RPT device 4000 according to the present technology is shown.

[0136] Figure 5b A perspective view of an RPT device 4000 including an outlet muffler 4124 according to the present technology is shown.

[0137] Figure 5c A perspective view of an RPT device 4000 having an integrated humidifier 5000 according to the present technology is shown, the humidifier including a water reservoir 5110.

[0138] Figure 5d shows a schematic diagram of the pneumatic path of one form of RPT device according to the present technology. The upstream and downstream directions are indicated.

[0139] Figure 5e shows a schematic diagram of the electrical components of an RPT device according to one aspect of the present technology.

[0140] Figure 5f shows a schematic diagram of an algorithm implemented in a PAP device according to one aspect of the present technology. In this figure, arrows with solid lines represent actual information flows, such as via electrical signals.

[0141] Figure 5g is a flowchart illustrating a method performed by the treatment engine of Figure 5f according to one aspect of the present technology.

[0142] Figure 5h A simplified illustration shows a humidifier connected to a blower and a patient catheter.

[0143] Figure 5i A schematic diagram of a humidifier is shown.

[0144] Figure 6a A rear perspective view of one form of RPT device 4000 according to the present technology is shown, illustrating an air circuit 4170 engaged with the RPT device 4000.

[0145] Figure 6b A rear perspective view of one form of RPT device 4000 according to the present technology is shown, with an exploded view of the air circuit 4170.

[0146] Figure 6c A perspective view of a water storage device 5110 according to the present technology is shown.

[0147] Figure 6d Another perspective view of a water storage device 5110 according to the present technology is shown.

[0148] Figure 6e A perspective view of a water reservoir cover 5114 and a middle portion 5202 according to one form of the present technology is shown.

[0149] Figure 6f A perspective view of the base 5112 of a water reservoir according to the present technology is shown.

[0150] Figure 6g A perspective view of an RPT device 4000 according to the present technology is shown, the RPT device including an integrally formed humidifier 5000 and a water reservoir 5110.

[0151] Figure 6h A rear perspective view of an RPT device 4000 according to the present technology is shown, the RPT device including an integrally formed humidifier 5000, with an exploded view of a water reservoir 5110.

[0152] Figure 6i A rear perspective view of an RPT device 4000 according to the present technology is shown, the RPT device including an integrally formed humidifier 5000, and a water reservoir 5110 is not shown.

[0153] Figure 6j A perspective view of a water reservoir 5110 according to the present technology is shown, illustrating the water reservoir 5110 in a closed configuration.

[0154] Figure 6k A perspective view of a water reservoir 5110 according to the present technology is shown, illustrating the water reservoir 5110 in an open configuration.

[0155] Figure 6l A perspective view of one form of the intermediate portion 5202 according to the present technology is shown.

[0156] Figure 7 Examples of this technology are shown, illustrating a PAP device 4000 and an integrated humidifier 5000.

[0157] Figure 8-11 Various views of a humidifier reservoir 5110 according to one aspect of the present technology are shown, wherein Figure 8-9 The humidifier reservoir 5110 is shown in the 'off' configuration. Figure 10 The humidifier reservoir 5110 is shown in its 'open' configuration, and Figure 11 This is an exploded view of the humidifier storage unit 5110.

[0158] Figure 12-15 The humidifier 5000 is shown from multiple perspectives, demonstrating the engagement of the humidifier reservoir 5110 with the reservoir docking part 5130 and / or the engagement of the humidifier 5000 with the air circuit 4170.

[0159] Figures 16a-18c A time-lapse diagram of an exemplary gas flow path is shown as gas enters the humidifier reservoir 5110 through inlet 5118 and exits through outlet 5122 after passing through the interior of the humidifier reservoir 5110.

[0160] Figures 19-20 Exemplary pressure / force distributions in humidifier reservoirs 5110 of various configurations are shown.

[0161] Figure 21-28 Different configurations of the reservoir cover 5114 are shown, particularly variations in the configurations of the inlet pipe 5124 and the outlet pipe 5126 according to various aspects of the present technology.

[0162] Figure 29a , 29b Figures 51 and 30 show humidifier reservoirs 5110, and specifically their purpose is to show orifices 5138.

[0163] Figure 29c and Figure 29d The humidifier base 5112 is shown, and specifically their purpose is to show the inclined profile 5139.

[0164] Figures 31-32 The humidifier docking member 5130 and the humidifier reservoir 5110 are shown, and the interaction between the cover retaining protrusion 5142 and the docking member locking recess 5144 according to one aspect of the present technology is specifically shown.

[0165] Figure 33 Another example of a humidifier reservoir 5110 according to the present technology is shown, wherein the humidifier reservoir is configured with a refill cover 5180, and the base, top and variable portion can be fixed together.

[0166] Figure 34-37 Further representations of a humidifier reservoir 5110 according to one aspect of the present technology are shown, particularly with regard to the arrangement of the inlet pipe 5124 and the outlet pipe 5126.

[0167] Figure 38A cross-sectional view of a reservoir cover 5114 and a variable portion in the form of a variable portion 5116, according to one aspect of the present technology, is shown.

[0168] Figure 39 An example of a humidifier reservoir 5110 according to another embodiment of the present technology is shown, wherein it is configured with a latch 5186.

[0169] Figures 40a-41 A portion of a humidifier reservoir 5110 according to another example of the present art is shown. In this configuration, the reservoir 5110 includes a reservoir cover 5114, which includes an inlet pipe 5124, an intermediate portion 5202 including an outlet pipe 5126 and a base 5112 (as shown). Figure 41 (As shown in the exploded view).

[0170] Figures 42a-42b The middle portion 5202 of the reservoir 5110 is shown from different angles. In particular, they are intended to show the baffle 5192, the outlet pipe 5126, and the support spokes 5194.

[0171] Figure 43 A perspective bottom view of the middle portion 5202 of the storage unit 5110 is shown.

[0172] Figures 44a-44b A cross-section of the reservoir cover 5114 and the intermediate portion 5202 connected together is shown. Figure 44b The cross-section of the baffle 5192 is shown in more detail, particularly the arrangement of the vertical portion of the inlet pipe 5124, the positioning portion 5196 of the baffle 5192, and the deflection portion 5198 of the baffle 5192.

[0173] Figure 45 The upper part of a humidifier reservoir 5110 according to another example of the present technology is shown. In this configuration, the reservoir 5110 includes a reservoir cover portion 5114, a base portion (not shown), and an intermediate portion 5202, the intermediate portion including an outlet pipe 5126, an inlet pipe 5124, and a wall portion 5206.

[0174] Figures 46a-46b A portion of a humidifier reservoir 5110, according to another example of current technology, is shown. Figures 46a-46b A reservoir cover 5114 connected to the intermediate section 5202 is shown, and specifically they are intended to show an inlet pipe 5124, an outlet pipe 5126, a deflector section 5198, and a flow guide 5195.

[0175] Figures 47a-47bThe intermediate portion 5202 of another example according to the present technology is shown, and specifically they are intended to show the deflector portion 5198, the flow guide 5195, the positioning portion 5196 and the seal 5204.

[0176] Figure 48 A portion of a humidifier reservoir 5110 according to another example of the present technology is shown. Specifically, Figure 48 The water level 5184 is shown, at which an airlock will be formed to prevent further liquid from entering the reservoir 5110 when the predetermined maximum volume of liquid is in the reservoir 5110.

[0177] Figures 49a-50b Various views of a humidifier reservoir 5110 according to one aspect of the present technology are shown, wherein Figures 49a-50a The humidifier reservoir 5110 is shown in the 'off' configuration. Figure 50b The humidifier reservoir 5110 is shown in the 'open' configuration.

[0178] Figures 51a-51b Various views of a humidifier reservoir 5110 according to one aspect of the present technology are shown. Figure 51a A plan view of the humidifier reservoir 5110 in an 'open' configuration is shown, indicating that it will... Figure 51b The cross section shown in the figure, and Figure 51b Storage 5110 is shown, wherein through Figure 51a The cross section taken from line 51b-51b is visible.

[0179] Figures 52-53 Several views of a storage base 5114 according to one aspect of the present technology are shown.

[0180] Figure 54 A perspective view of a humidifier barrel including a separately formed inlet, according to an example of the present technology, is shown.

[0181] Figure 55 It shows Figure 54 Another perspective view of the humidifier barrel.

[0182] Figure 56 It shows Figure 54 The front view of the humidifier barrel.

[0183] Figure 57 It shows Figure 54 A partial cross-sectional view of the humidifier barrel.

[0184] Figure 58 It shows Figure 57 An exploded view of a partial cross-section.

[0185] Figure 59 It shows Figure 54 An exploded view of the humidifier barrel.

[0186] Figure 60 A perspective view of a humidifier barrel including a retaining mechanism, according to an example of the present technology, is shown.

[0187] Figure 61a An example of the unlocked position according to this technology is shown. Figure 60 A partial cross-sectional view of the retaining mechanism of the humidifier barrel.

[0188] Figure 61b An example of the locked position according to this technology is shown. Figure 60 A partial cross-sectional view of the retaining mechanism of the humidifier barrel.

[0189] Figure 62 An example RPT device according to the present technology and a perspective view of a humidifier including a humidifier tank are shown.

[0190] Figure 63 It shows Figure 62 A top view of the humidifier barrel.

[0191] Figure 64 An example of the unlocked position according to this technology is shown. Figure 63 A partial cross-sectional view of the retaining mechanism of the humidifier barrel.

[0192] Figure 65 An example of the locked position according to this technology is shown. Figure 63 A partial cross-sectional view of the retaining mechanism of the humidifier barrel.

[0193] Figure 66 A top view of a humidifier barrel including a retaining mechanism, according to an example of this technology, is shown.

[0194] Figure 67a It shows Figure 66 A partial cross-sectional view of the retaining mechanism of the humidifier barrel.

[0195] Figure 67b A partial cross-sectional view is shown of the barrel and the docking piece engaged in the operating position.

[0196] Figure 67c A partial cross-sectional view is shown showing the barrel and the docking piece engaged in the operating position.

[0197] Figure 67d A partial cross-sectional view shows the barrel and the docking member further engaged into the operating position.

[0198] Figure 68 A perspective view of a humidifier barrel including a retaining mechanism, according to an example of the present technology, is shown.

[0199] Figure 69 Show Figure 68 An enlarged view of the humidifier barrel.

[0200] Figure 70 A partial cross-sectional view of an RPT device and a humidifier according to an example of the present technology is shown, wherein Figure 68 The humidifier barrel is in a partially engaged state.

[0201] Figure 71 A partial cross-sectional view of an RPT device and a humidifier according to an example of the present technology is shown, wherein Figure 68 The humidifier barrel is in another partially engaged state.

[0202] Figure 72 A partial cross-sectional view of an RPT device and a humidifier according to an example of the present technology is shown, wherein Figure 68 The humidifier barrel is in another partially engaged state.

[0203] Figure 73 A partial cross-sectional view of an RPT device and a humidifier according to an example of the present technology is shown, wherein Figure 68 The humidifier barrel is in the engaged state.

[0204] Figure 74 A perspective view of an example humidifier barrel according to the present technology is shown, the humidifier barrel including a lid with opposing clips.

[0205] Figure 75 It shows Figure 74 Another perspective view of the humidifier barrel.

[0206] Figure 76 It shows Figure 74 An exploded view of the humidifier barrel.

[0207] Figure 77 A front perspective view of an example RPT device and humidifier according to the present technology is shown, including the humidifier barrel in a partially engaged state.

[0208] Figure 78 A rear perspective view of an RPT device and a humidifier according to an example of the present technology is shown, wherein Figure 77 The humidifier barrel is in a partially engaged state.

[0209] Figure 79a A top view of an RPT device and a humidifier according to an example of this technology is shown, wherein Figure 77 The humidifier barrel is engaged with the retaining mechanism in the unlocked position.

[0210] Figure 79b A top view of an RPT device and a humidifier according to an example of this technology is shown, wherein Figure 77The humidifier barrel is engaged with the locking mechanism in the locked position.

[0211] Figure 80 An exploded view of a retaining mechanism for a humidifier barrel, according to an example of the present technology, is shown.

[0212] Figure 81a The device is shown in the unlocked position. Figure 80 The front view of the retaining mechanism.

[0213] Figure 81b The locked position is shown. Figure 80 The front view of the retaining mechanism.

[0214] Figure 82a The device is shown in the unlocked position. Figure 80 Side view of the retaining mechanism.

[0215] Figure 82b The locked position is shown. Figure 80 Side view of the retaining mechanism.

[0216] Figure 83 Examples illustrating the present technology include those having Figure 80 The RPT device of the humidifier barrel with the retaining mechanism and the rear perspective view of the humidifier.

[0217] Figure 84 A front perspective view of an example RPT device and humidifier according to the present technology is shown, including the humidifier barrel in a partially engaged state.

[0218] Figure 85 A top view of an RPT device and a humidifier according to an example of this technology is shown, wherein Figure 84 The humidifier barrel is in a partially engaged state.

[0219] Figure 86 A top view of an RPT device and a humidifier according to an example of this technology is shown, wherein Figure 84 The humidifier barrel is in the engaged state.

[0220] Figure 87 A rear perspective view of an RPT device including a retaining mechanism for a humidifier barrel and a humidifier, according to an example of the present technology, is shown.

[0221] Figure 88a An example of the locked position according to this technology is shown. Figure 87 A partial cross-sectional view of the retention mechanism.

[0222] Figure 88b An example of the unlocked position according to this technology is shown. Figure 87 A partial cross-sectional view of the retention mechanism.

[0223] Figure 89a A rear perspective view of an RPT device and a humidifier according to an example of the present technology is shown. The RPT device includes a retaining mechanism for the humidifier barrel, which is shown in a locked position according to an example of the present technology.

[0224] Figure 89b An example of the unlocked position according to this technology is shown. Figure 89a A partial perspective view of the retaining mechanism.

[0225] Figure 89c An example of the locked position according to this technology is shown. Figure 89a A partial cross-sectional view of the retention mechanism.

[0226] Figure 89d An example of the unlocked position according to this technology is shown. Figure 89a A partial cross-sectional view of the retention mechanism.

[0227] Figure 90 A perspective view of a portion of a humidifier barrel including a retaining mechanism, according to an example of this technology, is shown.

[0228] Figure 90a Show Figure 90 Cross-sectional view of the barrel and retaining mechanism.

[0229] Figure 90b Examples according to this technology are shown. Figure 90 A partial cross-sectional view of the barrel and the retaining mechanism, wherein the retaining mechanism is in the locked position.

[0230] Figure 90c Examples according to this technology are shown. Figure 90 A partial cross-sectional view of the barrel and the retaining mechanism, with the retaining mechanism in the unlocked position.

[0231] Figure 91 A front perspective view of an RPT device and a humidifier according to an example of the present technology is shown, the humidifier including a retaining mechanism for the humidifier tank in a locked position.

[0232] Figure 92 Another perspective view of the RPT device and the humidifier is shown, the humidifier including components for... Figure 91 The humidifier barrel has a locking mechanism that keeps it in the locked position.

[0233] Figure 93a A rear perspective view of an RPT device and a humidifier according to an example of the present technology is shown, the humidifier including a retaining mechanism for the humidifier tank in a locked position.

[0234] Figure 93bAnother perspective view of the RPT device and humidifier shown, the humidifier being used to include Figure 93a The retaining mechanism of the humidifier barrel is in the unlocked position.

[0235] Figure 94 A perspective view of a humidifier barrel including a retaining mechanism, according to an example of the present technology, is shown.

[0236] Figure 95 yes Figure 94 Side view of the humidifier barrel.

[0237] Figure 96 yes Figure 94 An enlarged perspective view of the humidifier barrel.

[0238] Figure 97a This illustrates an example of the technology in a state of engagement with an RPT device and a humidifier. Figure 94 A partial cross-sectional view of the humidifier's reservoir, showing the retaining mechanism in the locked position.

[0239] Figure 97b This illustrates an example of the technology in a state of engagement with an RPT device and a humidifier. Figure 94 A partial cross-sectional view of the humidifier's reservoir, with the retaining mechanism in the unlocked position.

[0240] Figure 97c This illustrates an example of integration with an RPT device and a humidifier according to the present technology. Figure 94 A partial cross-sectional view of the humidifier barrel, showing the retaining mechanism in the locked position.

[0241] Figure 98 This is a partial cross-sectional view showing an example of a humidifier barrel coupled with an RPT device and a humidifier according to the present technology, the humidifier barrel including a retaining mechanism in a locked position.

[0242] Figure 99 This is a partial cross-sectional view showing an example of a humidifier barrel coupled with an RPT device and a humidifier according to the present technology, the humidifier barrel including a retaining mechanism in a locked position. Detailed Implementation

[0243] Before describing this technology in more detail, it should be understood that this technology is not limited to the specific examples that may vary as described herein. It should also be understood that the terminology used in this invention is for the purpose of describing the specific instances described herein and is not intended to be limiting.

[0244] 5.1 Treatment

[0245] In one form, the technology includes a method for treating respiratory disorders, the method comprising step 1000 of applying positive pressure to the inlet of a patient's airway.

[0246] In some embodiments of this technology, a positive pressure air supply is provided to the patient's nasal passages via one or both nostrils.

[0247] In some embodiments of this technology, mouth breathing is restricted, constrained, or prevented.

[0248] 5.2 Treatment System

[0249] In one form, the technology includes a device or apparatus for treating respiratory disorders. The device or apparatus may include an RPT device 4000 for supplying pressurized breathing gas (e.g., air) to a patient interface 3000 via an air circuit 4170 to a patient 1000.

[0250] 5.3 Patient Interface 3000

[0251] A non-invasive patient interface 3000 according to one aspect of the present technology includes the following functional aspects: a sealing formation structure 3100, an inflation chamber 3200, an air vent 3400, a positioning and stabilizing structure 3300, and a connection port 3600 for connection to an air circuit 4170. The patient interface 3000 may optionally include a forehead support structure 3700 coupled to the stabilizing structure 3300. In some forms, the functional aspects may be provided by one or more physical components. In some forms, a single physical component may provide one or more functional aspects. In use, the sealing formation structure 3100 is arranged around the inlet of the patient's airway to facilitate the supply of positive pressure air to the airway.

[0252] 5.4RPT device 4000

[0253] Figure 5a An exploded view of an RPT device 4000 according to one aspect of the present technology is shown. The RPT device 4000 may include mechanical and pneumatic components, electrical components, and is configured to execute one or more algorithms. The RPT device may include one or more panels, such as a front panel 4012 and a side panel 4014. The RPT device 4000 may also include an outlet silencer 4124, such as... Figure 5a and 5b As shown. The outlet silencer 4124 can be removable and replaced with a water reservoir 5110 (see Figure 1). Figure 5cIn this form, the RPT device 4000 can be considered to include an integrated humidifier 5000. Therefore, depending on whether the water tank 5110 or the outlet silencer 4124 is attached, the RPT device 4000 can be used with or without humidification. Preferably, the RPT device 4000 includes a chassis 4016 that supports one or more internal components of the RPT device 4000. In one form, the RPT device 4000 includes a pressure generator 4140, which can be housed in a pneumatic block 4020 connected to the chassis 4016.

[0254] The pneumatic path of the RPT device 4000 (e.g., shown in Figure 5d) may include an inlet air filter 4112, an inlet silencer 4122, a pressure generator 4140 (preferably a blower 4142) capable of supplying air at positive pressure, and an outlet silencer 4124 (or a water reservoir 5110, if humidification is required). One or more transducers 4270, such as a pressure sensor 4272 and a flow sensor 4274, may be included in the pneumatic path. The pneumatic path may also include an anti-backflow valve 4160 to prevent water from the humidifier 5000 from overflowing back into the electrical components of the RPT device 4000.

[0255] RPT device 4000 may include one or more electrical components that can be mounted on a single printed circuit board assembly (PCBA), such as main PCBA 4202. In an alternative form, RPT device 4000 may include more than one PCBA.

[0256] An RPT device may include one or more of the following components in a single unit. In an alternative form, one or more of the following components may be configured as separate units. For example, an RPT device may include one or more of the following: air filter, side panel, silencer, pressure generator, pneumatic block, chassis, transducer (flow transducer, pressure transducer, motor speed transducer), light sensor, anti-overflow valve, air circuit, air circuit connector, oxygen delivery port, power supply, central controller, treatment device controller, protection circuit, data connection interface, memory, output device (e.g., display, alarm, etc.), and user interface panel (such as PCT application No. PCT / AU2014 / 050426 (WO 2015 / 089582), which is incorporated herein by reference in its entirety).

[0257] 5.5 Humidifier 5000

[0258] 5.5.1 Overview of Humidifiers

[0259] In one embodiment of this technology, a humidifier 5000 is configured to alter the absolute humidity of the air or gas delivered to the patient relative to the ambient air. Typically, the humidifier 5000 is used to increase the absolute humidity and temperature of the airflow (relative to ambient air) before it is delivered to the patient's airway. In one embodiment, the humidifier 5000 may be a discrete unit connectable to the RPT device 4000. In another embodiment, the humidifier 5000 may be integrated with the RPT device 4000, for example, as... Figure 5c As shown and described in further detail below.

[0260] The humidifier 5000 may include a water reservoir 5110, a heating element 5240, and one or more transducers. The humidifier 5000 may be configured to receive an airflow from the RPT device 4000 and deliver the humidified airflow to the patient interface 3000, for example, via an air circuit 4170.

[0261] 5.5.2 Humidifier Components

[0262] 5.5.2.1 Water storage tank 5110

[0263] According to one arrangement, the humidifier 5000 may include a water reservoir 5110 configured to hold or retain a volume of liquid (e.g., water) for humidifying an airflow. Figures 6c-6d One form of a water reservoir 5110 is shown, which includes a water reservoir base 5112, a water reservoir cover 5114, and an intermediate portion 5202 including a compliant portion 5116. The water reservoir 5110 is configured to maintain a predetermined maximum volume of water to provide adequate humidification for at least the duration of respiratory therapy (such as one night's sleep). Typically, the water reservoir 5110 is configured to hold several hundred milliliters of water, such as 300 ml, 325 ml, 350 ml, or 400 ml. In other forms, the humidifier 5000 may be configured to receive a water supply from an external water source, such as a building's water supply system.

[0264] According to one aspect, the water reservoir 5110 is configured to add humidity to an airflow from the RPT device 4000 as airflow passes through it. In one form, the water reservoir 5110 may be configured to cause the airflow to travel through the reservoir 5110 in a tortuous path while in contact with the volume of water therein.

[0265] The reservoir 5110 can also be configured to prevent liquid from flowing out therefrom, for example, when the reservoir 5110 is displaced or rotated from its normal operating orientation, such as through any holes or between its sub-components. Since the airflow to be humidified by the humidifier 5000 is typically pressurized, the reservoir 5110 can also be configured to prevent pressure loss through leakage or flow resistance.

[0266] The water reservoir 5110 may include an inlet 5118 for receiving airflow entering the water reservoir 5110 and an outlet 5122 for discharging airflow from the water reservoir 5110. The reservoir 5110 may include a reservoir inlet pipe 5124 and a reservoir outlet pipe 5126 (see, for example, see...). Figure 6e In one configuration, inlet 5118 and reservoir inlet pipe 5124 are integrally formed as an inlet component, and outlet 5122 and reservoir outlet pipe 5126 are integrally formed as an outlet component.

[0267] Figure 8-11 One form of a water reservoir 5110 is shown, which includes a water reservoir base 5112, a water reservoir cap 5114, and a variable portion 5116. The reservoir 5110 is configured to hold a given maximum volume of liquid (e.g., water), typically several hundred milliliters, such as 300 milliliters (ml), or 325 ml, 350 ml, or 400 ml, although it is understood that other volumes of liquid, such as 100 ml, 200 ml, 250 ml, 500 ml, or more or less, can be used. In one form, the reservoir 5110 may include a cavity formed by multiple walls to hold a given maximum volume of liquid, such as... Figure 10-11 As shown.

[0268] 5.5.2.2 Water Storage Unit Docking Station 5130

[0269] The humidifier 5000 may include a water storage docking station 5130 to receive a water storage tank 5110. For example... Figure 13 As shown, the water reservoir docking station 5130 can form a cavity 5160 to receive the water reservoir 5110. In one embodiment, the water reservoir docking station 5130 can be integrated with the humidifier 5000, such as... Figure 12-15As shown. The water reservoir docking station 5130 can also connect the water reservoir 5110 to a pneumatic path. In this arrangement, the water reservoir docking station 5130 includes: a docking station gas outlet 5168 for outputting a breathable gas stream to the water reservoir 5110; a docking station gas inlet 5170 for receiving a breathable gas stream that has been humidified in the water reservoir 5110; and a humidifier outlet 5172 for transferring the humidified breathable gas stream to the air circuit 4170. The cavity 5160 may include a top portion configured to cover at least a portion of a cover of the reservoir 5110 and a bottom portion including a heater plate 5120.

[0270] It should be understood that the reservoir connector 5130 can be disposed separately from the humidifier 5000 in an alternative arrangement. In this arrangement, an additional interface can be used to connect the reservoir connector 5130 to the humidifier 5000.

[0271] In another arrangement, the water reservoir docking member 5130 may include an opening in a substantially horizontal plane, such that the water reservoir 5110 can be inserted from above or below the water reservoir docking member 5130.

[0272] 5.5.2.3 Water reservoir cover 5114

[0273] In one form, the water reservoir cover 5114 is pivotally connected to the base 5112 (e.g., via a means such as...). Figure 6e The hinge 5158 shown allows the water reservoir 5110 to switch between an open and closed configuration (see [link]). Figure 6j and 6k When the water reservoir 5110 is in its closed configuration, the compliant portion 5116 is positioned at a sealing engagement between the base 5112 and the cover 5114 to seal the base 5112 and the cover 5114. A hinge 5158 can be coupled to a complementary hinge recess portion 5159 located in the reservoir base 5112 (in... Figure 6f (As shown in the diagram). In one form, the cap 5114 may be constructed of a biocompatible material, such as plastic or thermoplastic polymers, such as acrylonitrile butadiene styrene (ABS) or polycarbonate. This pivotable connection may further allow the water reservoir cap 5114 and base 5112 to be compressed toward each other compared to their normal operating configuration, for example, for inserting the water reservoir 5110 into the docking member 4130, as will be described in further detail below.

[0274] Another aspect of this technology relates to the operation of pivoting movement in the cover 5114 relative to the base 5112. When the cover 5114 rotates about the hinge 5158, it can be as follows: Figure 50a and Figure 50bThe rotation range is defined as shown. In one embodiment, the two ends of the rotation range can be defined by the closure of the cover 5114 relative to the base 5112, wherein one of the ends can be a fully open position defined by the rotation guide 5220, which can be interference-fitted with the rotation stop 5222 in the fully open position.

[0275] According to another aspect, the cover 5114 can be configured such that when a user attempts to open the cover 5114 further than the rotation stop 5222 and the rotation guide 5220, the cover 5114 will detach from the base 5112. For example... Figure 50b and Figure 51b As shown, in the fully open position, the rotation guide 5220 can contact the rotation stop 5222. In this configuration, an attempt to further open the cover 5114 relative to the base 5112 will cause the rotation stop 5222 to act as a pivot of the cantilever and cause the cover 5114 to separate from the base 5112 at the hinge 5158, thereby preventing damage to the reservoir 5110, for example, due to excessive force applied to it. In one configuration, the hinge 5158 can be configured to allow the cover 5114 to be disengaged more easily in one orientation relative to the base 5112 (e.g., thus the reservoir 5110 is in the fully open position) than in the other orientation. This can be achieved, for example, by introducing a tapered portion into the hinge 5158 on the cover 5114, such as... Figure 46a and 46b As shown.

[0276] Water reservoir cover 5114 may include, for example Figure 6e The diagram shows one form of inlet 5118, water reservoir inlet pipe 5124, outlet 5122, and water reservoir outlet pipe 5126. The reservoir 5110 may further include flow elements, such as baffles (e.g.,...). Figure 6e and Figure 6k The entrance cap 5125 shown and / or as shown Figure 6e and Figure 6k The plate 5123 shown is configured to increase the length of the tortuous flow path and / or prevent water from entering the inlet pipe 5124 and / or outlet pipe 5126. In one example, the water reservoir cover 5114 may further include one or more baffles configured to guide air through the tortuous path in the water reservoir 5110. In one form, the baffle may serve as an inlet cap 5125 attached to the end of the reservoir inlet pipe 5124 (e.g., Figure 6e and Figure 6k As shown), and in another form, the baffle can be arranged as plate 5123 (as shown). Figure 6e and Figure 6k (As shown).

[0277] Figures 74 to 76Another example is depicted, in which the pivotally coupled cover 5114 is replaced by a drop on the cover 5144, which uses a plurality of opposing clips 5450a, 5450b to secure the cover 5144 to the base 5112. In this example, a first clip 5450a is disposed on one side of the cover 5144, and a second clip 5450b is disposed on the opposite side of the cover 5144. Each of the clips 5450a, 5450b includes at least one slot 5452, for example... Figures 74 to 76 The multiple pairs of grooves shown. Opposite sides of the base 5112 include at least one retaining protrusion 5455, for example... Figures 74 to 76 The pair of retaining protrusions shown are adapted to be releasably interlocked with corresponding clips 5450a, 5450b. For example... Figure 74 and 75 As shown, the slot 5452 of each clip 5450a, 5450b is constructed and arranged to receive, for example, a corresponding retaining protrusion 5455 in a snap-fit ​​manner, so as to releasably retain the cover 5114 onto the base 5112.

[0278] Figures 94 to 99 An example of the technology is depicted, in which a swing latch 5400 is used to releasably lock the barrel 5110 in the operating position.

[0279] In this example, a swing latch 5400 is disposed on a humidifier barrel 5110 (or reservoir), which can engage with the aforementioned integrated PAP device and humidifier reservoir docking part 5130. The following embodiments may share various features, structures, and characteristics of the barrels described above, thus avoiding the need to repeat the same features.

[0280] As shown, the latch 5400 includes a locking lever 5410 and a support member 5420, which is pivotally connected to the cover 5114 to allow the latch 5400 to pivot about a pivot point relative to the cover 5114.

[0281] The locking lever 5410 includes a push-button end 5412 at one end and a locking end 5414 at the other end. The locking end 5414 includes one or more downwardly extending retention protrusions 5142, and the push-button end 5412 includes a finger grip 5413 (e.g., an elongated rib) to assist the patient in manipulating the latch 5400. The latch 5400 can be biased to a locked or closed position by any suitable spring configuration. For example, in… Figures 97a to 97c In this configuration, spring 5422 is arranged along button end 5412 to bias latch 5400 to a locked or closed position. In an alternative example, such as... Figure 98 As shown, the support member 5420 includes a flexible configuration configured to support the locking lever 5410 on the cover 5114 and resiliently bias the latch 5400 to a locked or closed position.

[0282] Figures 97a to 97b The engagement of barrel 5110 and mating member 5130 is shown. As shown, a mating member locking recess 5144 in the upper surface of mating member 5130 can be shaped to receive a corresponding protrusion 5142. During insertion of barrel 5110, latch 5400 is biased to a locked or closed position such that the flat or square front end 5143 of protrusion 5142 is constructed and arranged to engage the outer surface 5145 of mating member 5130 adjacent to locking recess 5144 (see Figure 5144). Figure 97a This is a capture mechanism, implemented in a way that requires force for assembly and disassembly. This engagement prevents the barrel 5110 from being fully inserted into the mating member 5130 until the user manually presses down the button end 5412 of the latch 5400 to pivot the locking end 5114 and raise its retaining protrusion 5142 upwards onto the outside 5145 of the mating member 5130 to the unlocked position (see [link]). Figure 97b This allows the protrusion 5142 and thus the barrel 5110 to further enter the mating member 5130. Once the barrel 5110 reaches the operating position, the protrusion 5142 passes over the outer side 5145 and the button end 5412 of the latch 5400 can be manually released, allowing its locking end 5114 and the retaining protrusion 5142 to elastically return to the locked position, in which the retaining protrusion 5142 lowers or descends to engage with the corresponding mating member locking recess 5144 (see...). Figure 97c In alternative examples, such as Figure 99 As shown, the front end 5143 of the protrusion 5142 may be tapered so that the swing latch 5400 can be raised without manual intervention when the tapered front end 5143 engages the outer side 5145 of the mating member 5130. To release the barrel 5110 from the base 5130, the button end 5412 can be pressed again to raise the retaining protrusion 5142, disengaging it from the mating member locking recess 5144 and allowing the barrel 5110 to slide out of the mating member 5130.

[0283] 5.5.2.4 Compliance / Variable Part 5116

[0284] In one embodiment, when using the water reservoir 5110, the compliant portion 5116 can act as a seal between the water reservoir base 5112 and the water reservoir cap 5114. The compliant portion 5116 can be configured as part of the reservoir cap 5114 or the reservoir base 5112, or independently of both, for example, as part of the intermediate portion 5202 (see [link to documentation]). Figure 6l The compliant portion 5116 can be engaged with the reservoir cover 5114 or the reservoir base 5112 in a variety of ways, including but not limited to ultrasonic welding, friction fitting, gluing, or by using an intermediate component.

[0285] The compliant portion 5116 preferably comprises a sufficiently resilient construction to resist forces and / or pressures generated in the reservoir 5110, such as forces and / or pressures generated by the user, the reservoir docking member 5130, and / or the airflow flowing through the reservoir 5110. The compliant portion 5116 is also preferably compliant to be able to engage with the cover 5114 and / or the base 5112 and conform to their shape to form a seal. In one form, the rigid portion of the intermediate section may be constructed of a nylon material approximately 2 mm thick (such as 1 mm, 1.5 mm, 2.5 mm, or 3 mm thick), and a silicone material may be used to overmold onto the rigid portion to form the compliant portion 5116.

[0286] In some arrangements, the compliant portion 5116 may be attached to the cover 5114 and / or the base 5112, and the base 5112 and / or the cover 5114 may be formed as two separate portions capable of being assembled with the compliant portion 5116 attached therebetween.

[0287] In an alternative arrangement, the compliant portion 5116 may be located within the wall of the reservoir base 5112 and / or the wall of the reservoir cover 5114, for example, integrally molded over the reservoir or as a separate component connected as a sub-assembly. In this arrangement, the compliant portion will not be located between the reservoir base 5112 and the reservoir cover 5114, but rather within the reservoir base 5112 and / or the reservoir cover 5114. More than one compliant portion 5116 may be present, or the compliant portion may be formed as multiple parts to provide more compliance during movement of the reservoir 5110.

[0288] In one embodiment, when the water reservoir 5110 is used, the variable portion 5116 can act as a seal between the water reservoir base 5112 and the water reservoir cover 5114. The variable portion 5116 can also perform other functions, such as improving the thermal contact between the reservoir 5110 and the heater plate 5120, as will be described in further detail below.

[0289] The variable portion 5116 can be configured as part of the reservoir cover 5114 or the reservoir base 5112, or independently of both. The variable portion 5116 can be engaged with the reservoir cover 5114 or the reservoir base 5112 in various ways, including but not limited to ultrasonic welding, friction fitting, gluing, or by using an intermediate component. The variable portion 5116 may include a carrier 5117 (such as...). Figure 11 (as shown in the image).

[0290] The variable portion 5116 is preferably configured to be sufficiently elastic to resist forces and / or pressures generated in the reservoir 5110, such as those generated by the user, the reservoir docking member 5130, and / or the airflow flowing through the reservoir 5110. It is also preferably compliant in the planar direction to be able to attach to the cover 5114 and / or the base 5112 and conform to its shape. In one form, the carrier 5117 may be constructed of a nylon material approximately 2 mm thick (such as 1 mm, 1.5 mm, 2.5 mm, or 3 mm thick), and a silicone material may be used to overmold onto the carrier 5117 to form the variable portion.

[0291] In some arrangements, the variable portion 5116 may be connected to the cover 5114 and / or the base 5112, and the base 5112 and / or the cover 5114 may be formed as two separate portions capable of being assembled with the variable portion 5116 connected therebetween.

[0292] In an alternative arrangement, the variable portion 5116 may be located within the wall of the reservoir base 5112 and / or the wall of the reservoir cover 5114, for example, by integral molding or as a separate component connected as a sub-assembly. In this arrangement, the variable portion will not be located between the reservoir base 5112 and the reservoir cover 5114, but rather within the reservoir base 5112 and / or the reservoir cover 5114. More than one variable portion 5116 may be present to provide greater compliance during movement of the reservoir 5110.

[0293] 5.5.2.5 Water storage tank base 5112

[0294] According to one arrangement, the water reservoir base 5112 includes a conductive portion 5120 (such as a base heat-conducting plate 5152, e.g., see base heat-conducting plate 5152) configured to be thermally connected to the heating element 5240 of the humidifier 5000. Figure 6f The conductive portion 5152 improves the efficiency of heat transfer from the heating element 5240 to the liquid volume in the reservoir 5110. All or part of the base heat-conducting plate 5152 can be made of a thermally conductive material, such as aluminum (e.g., about 2 mm thick, such as 1 mm, 1.5 mm, 2.5 mm, or 3 mm), or another thermally conductive material, such as a metal. In some cases, suitable thermal conductivity can be achieved using a material of appropriate thickness but lower conductivity.

[0295] The reservoir base 5112 can also be configured to retain the container of liquid in which the reservoir 5110 is configured to hold a given maximum volume. In one form, the base 5112 may include additional features such as spill-proof features.

[0296] In one form, the reservoir base 5112 may further include an inner lip 5224 and / or an outer lip 5226, for example, as shown in the image. Figure 52 and Figure 53 As shown. According to one aspect, for example when the intermediate portion 5202 is compressed, or when the intermediate portion 5202 is under vibration, the inner lip 5224 and / or the outer lip 5226 can prevent liquid from flowing out of the reservoir 5110 through the interface between the intermediate portion 5202 (e.g., the compliant portion 5116) and the base 5112.

[0297] It should be understood that the reservoir base 5112 can be constructed as any number of components. The reservoir base 5112 can be constructed as a single component made of, for example, aluminum or another thermally conductive material such as metal. In another arrangement, the reservoir base 5112 can be constructed as two components, for example, comprising a lower component and an upper component.

[0298] According to one arrangement, the reservoir base 5112 includes a conductive portion (such as a base heat-conducting plate 5152) configured to be thermally connected to the heating plate 5120 of the humidifier 5000. The conductive portion improves the efficiency of heat transfer from the heating plate 5120 to the liquid volume in the reservoir 5110. All or part of the base heat-conducting plate 5152 may be made of a thermally conductive material, such as aluminum (e.g., about 2 mm thick, such as 1 mm, 1.5 mm, 2.5 mm, or 3 mm), or another thermally conductive metal. In some cases, suitable thermal conductivity can be achieved using a material of appropriate thickness and lower conductivity.

[0299] The reservoir base 5112 can also be configured to hold a container of liquid of a given maximum volume that the reservoir 5110 is configured to hold. In one form, the base 5112 may include additional features, such as spill-proof features, as will be described in further detail below. The reservoir base 5112 may also include a base upper body 5146 and a base bottom plate 5148, which may form a receiving portion together with the base heat-conducting plate 5152.

[0300] The base upper body 5146 and / or base bottom plate 5148 may be constructed of a biocompatible material suitable for retaining the liquid volume, such as plastics or thermoplastic polymers, like ABS or polycarbonate. The base heat-conducting plate 5152 may include a sealing element 5150 that can be integrated into both the base upper body 5146 and the base bottom plate 5148, and / or sealingly connected to both to prevent water from flowing out of the water reservoir 5110, particularly from the base 5112. For example, the sealing element 5150 may be overmolded onto the base heat-conducting plate 5152, and the resulting component may be secured between the base upper body 5146 and the base bottom plate 5148.

[0301] exist Figure 11 In one embodiment, the base 5112 may include a base upper body 5146, a base bottom plate 5148, and a base heat-conducting plate 5152. However, it should be understood that the reservoir base 5112 can be constructed as any number of components. The reservoir base 5112 may be constructed as a single component made of, for example, aluminum or another thermally conductive material such as metal. In another arrangement, the reservoir base 5112 may be constructed as two components, for example, comprising a lower component and an upper component. In such an arrangement, the lower component may be constructed of a thermally conductive material and function as the base heat-conducting plate 5152, the sealing element 5150, and the base bottom plate 5148, and the upper component may correspond to the base upper body 5146 and be constructed of polycarbonate material.

[0302] In one form, the reservoir base 5114 may further include an inner lip 5224 and / or an outer lip 5226, for example, as shown in the image. Figures 52-53 As shown. According to one aspect, for example when the intermediate portion 5202 is compressed, or when the intermediate portion 5202 is under vibration, the inner lip 5224 and / or the outer lip 5226 can prevent liquid from flowing out of the reservoir 5110 through the interface between the intermediate portion 5202 (e.g., seal 5204) and the base 5114.

[0303] 5.5.2.6 Storage handle 5154 5156

[0304] Figure 12-15 An upper handle 5154 is shown on the reservoir cap 5114, and a lower handle 5156 is shown on the reservoir base 5112. These handles are designed to help a patient (or user) 1000 grasp and hold the water reservoir 5110. In the illustrated arrangement, handles 5154, 5156 are positioned away from hinge 5158 such that, while holding the reservoir 5110 via handles 5154, 5156, the patient 1000 applies force to the reservoir 5110, compressing the variable portion 5116, which pushes the cap 5114 and base 5112 toward each other. The compressive force also helps to hold the variable portion 5116 in a sealing engagement between the reservoir base 5112 and the reservoir cap 5114, such as during transport to the reservoir 5110 or during refilling of the reservoir with liquid. It should be understood that handles 5154 and 5156 can be placed on other parts or areas of the water reservoir 5110.

[0305] like Figure 13As shown, the friction grip 5166 can be disposed on the surface of any one or both handles 5154, 5156. The friction grip 5166 can be configured to assist the patient 1000 in retaining the reservoir 5110, such as by being made of a high-friction material, having a high-friction texture, and / or having a shape that is easier to retain than the surrounding area of ​​the reservoir 5110. For example, the friction grip 5166 can be constructed of an elastomeric material such as silicone, while the water reservoir 5110 can be constructed primarily of polycarbonate material.

[0306] 5.5.2.7 Airflow Path

[0307] One of the purposes of this technology is to force the breathable gas flow through the reservoir 5110 in a tortuous path between the inlet 5118 and the outlet 5122. This prevents any “short circuit” in the breathable gas flow, which could result in insufficient humidity in the breathable gas flow delivered to the patient 1000.

[0308] Figures 16a-18c An exemplary path of inhalable gas flow through reservoir 5110 is shown as inhalable gas enters through inlet 5118 and exits through outlet 5122. These figures are arranged chronologically in three different orthogonal views of each figure to visually illustrate this exemplary flow path. In this arrangement, the inhalable gas flow received through inlet 5118 passes through inlet pipe 5124 (… Figures 16a-16c The internal volume of the water storage tank 5110 ( Figures 17a-17c The breathable gas stream then passes through outlet pipe 5126 as humidified breathable gas exits water reservoir 5110 at outlet 5122. Figures 18a-18c For clarity, Figures 16a-18c The reservoir 5110, with a cover 5114 and a base 5112, is shown in an exploded view orientation, and any gas flow occurring within the internal volume of the reservoir 5110 is shown in dashed lines. The dashed arrows shown indicate the general direction of exemplary flow of breathable air, although it should be noted that the nature of the gas or airflow means that any airflow path includes eddies (e.g., turbulence) of gas, rather than a straight and direct airflow path.

[0309] In some forms of this technology, the reservoir 5110 may include a flow element or baffle 5192 configured to increase the length of the tortuous flow path and / or prevent water from entering the inlet pipe 5124 and / or outlet pipe 5126. For example, the reservoir 5110 may include, Figures 40a-43 The deflection portion 5198 shown, or Figures 46a-46b The deflector portion 5198 or the guide vane 5195. In some arrangements, the baffle 5192 may further include a positioning portion 5196, as will be described in further detail below.

[0310] exist Figures 40a-43 In the arrangement shown, the deflector section 5198 is configured to prevent the breathable gas flow from immediately entering the outlet pipe 5126 (i.e., short-circuiting) after leaving the inlet pipe 5124 via the outlet pipe 5125. When assembled together, as Figure 40a As shown, the deflection portion 5198 can be located near the inner end 5125 of the inlet pipe, such as by adjoining the inner end of the inlet pipe. In this arrangement, the deflection portion 5198 forms a cover between the base of the inlet pipe outlet 5125 and the inner end 5127 of the outlet pipe. The cover can be further advantageous because it forces the breathable gas flow to travel in a channel formed by the cover and a certain volume of water to improve humidity absorption.

[0311] exist Figures 46a-46b In the illustrated arrangement, the reservoir 5110 includes a deflector 5195 and a deflector portion 5198. The deflector portion 5198 is configured to prevent short-circuiting of the breathable gas flow, and the deflector 5195 is further configured to guide the breathable gas flow exiting the inlet pipe 5124 in a direction substantially parallel to the liquid volume in the reservoir 5110. This can mitigate the 'expulsion' that may occur when the breathable gas flow exits the inlet pipe 5124 in a direction perpendicular to the surface of the liquid volume.

[0312] like Figure 21-22 As shown, the reservoir 5110 may include an end wall 5128 adjacent to and opposite the inner end 5125 of the inlet pipe 5124. The inner end wall 5128 of the reservoir 5110 guides the air leaving the inlet pipe 5124 to flow across the water surface before reaching the inner end 5127 of the outlet pipe 5126 and out of the outlet 5122 through the outlet pipe 5126. Figure 23-26 Examples of other arrangements of the flow element are shown, wherein the reservoir 5110 may include a deflector vane 5136 positioned near the inner end 5125 of the inlet pipe 5124. The deflector vane 5136 may be formed as follows: Figure 25-26 The extension of the inlet pipe 5124 shown, or the steering blade 5136, can be a separate component located near or connected to the inlet pipe 5124. The steering blade can also be shaped as follows: Figure 25-26 The outline shown.

[0313] Figures 16a-18cThe path of the breathable gas flow shown is merely exemplary and intended to illustrate one of many paths a breathable gas flow can take, namely, entering the water reservoir 5110 through inlet 5118 after undergoing a certain degree of vortexing within the volume of the water reservoir 5110 and exiting through outlet 5122. Those skilled in the art will understand that the particles or molecules forming the breathable airflow may not follow a single path within the water reservoir 5110 due to various factors, including, for example, localized turbulence (vortices) or pressure gradients within the water reservoir 5110. As a result, the cumulative path of the breathable airflow can include any number of paths, where the breathable airflow undergoes varying degrees of 'vortexing' within the water reservoir 5110 before exiting at outlet 5122 via outlet pipe 5126. It is also possible that small portions of the breathable airflow may escape from the water reservoir 5110 as a leak.

[0314] 5.5.2.8 Storage inlet / outlet

[0315] As described above, the reservoir inlet 5118 is configured to receive a breathable gas flow entering the reservoir 5110, and the reservoir outlet 5122 is configured to output a humidified flow of breathable gas. The inlet 5118 and / or outlet 5122 are preferably further configured to prevent liquid from flowing out of the reservoir 5110 when the reservoir 5110 is displaced and / or rotated from its normal operating orientation. Furthermore, the inlet 5118 and / or outlet are preferably configured to prevent short-circuiting of the breathable gas flow as described above. In one form, the inlet 5118 may be configured to prevent liquid 'spitting out' or splashing that may be caused by an air jet impacting a volume of liquid in the reservoir 5110.

[0316] In such Figure 21 In one arrangement shown, the reservoir inlet 5118 includes an inlet pipe 5124 to provide a flow path for the inlet flow of breathable gas into the reservoir 5110, and the reservoir outlet 5122 includes an outlet pipe 5126 to provide a flow path for the outlet flow of humidified breathable gas from the reservoir 5110.

[0317] In such Figure 25-26 In one configuration shown, it may be advantageous to configure the steering vane 5136 such that the lowest portion of the steering vane 5136 extends below the lowest portion of the outlet pipe 5126. This can further prevent water from entering the inlet pipe 5124 from any 'splash' water.

[0318] The water reservoir 5110 is preferably configured to provide tilt backflow protection against water flowing back through the outlet pipe 5126 or the inlet pipe 5124. Water flowing out through the inlet pipe 5124 may be particularly undesirable as it could introduce water into the PAP device 4000 and damage electronic components (such as motors, flow sensors, or printed circuit boards) by exposing them to water.

[0319] In one arrangement of this technology, the reservoir 5110 achieves backflow protection by arranging an inlet pipe outlet 5125, such that when the reservoir 5110 is rotated 90 degrees in any direction from its operating horizontal orientation, a given maximum volume of water can be stored in the reservoir 5110 without reaching the inner end 5125 of the inlet pipe.

[0320] In another arrangement of the reservoir 5110, when viewed from above, the axes of the inlet pipe 5124 and the outlet pipe 5126 may intersect, as shown below. Figure 27-28 As shown. The inlet pipe 5124 and the outlet pipe 5126 may not be connected to each other, because one of these pipes passes under the other, such as the inlet pipe 5124 passing under the outlet pipe 5126.

[0321] This configuration improves tilt backflow protection by arranging the inlet pipe 5124 and outlet pipe 5126 such that when the reservoir 5110 tilts away from its operating orientation, water must reach the higher end of either the inlet pipe 5124 or the outlet pipe 5126 to exit the reservoir 5110. For example, if the reservoir 5110 tilts such that water reaches the lower part of the inner end 5125 of the inlet pipe 5124, the water must still rise higher to reach the outer end of the inlet pipe 5124 to exit the reservoir 5110, as... Figure 28 As shown.

[0322] Figure 34-37 A simplified representation of the effect produced by the intersecting inlet and outlet pipes is shown, with the inner surfaces indicated by dashed lines. These figures illustrate an alternative arrangement of the water reservoir 5110, which has an inlet 5118 and an outlet 5122, respectively including an inlet pipe 5124 and an outlet pipe 5126. Figures 34-35 This illustrates a configuration where the tube axes intersect when viewed from the side (e.g.) Figure 35 (as shown), and Figures 36-37 This illustrates an alternative configuration where the tube axes are substantially parallel when viewed from the side (e.g.) Figure 37 (As shown). In Figure 34-37 In this context, it is assumed that the volume of water 5182 fills approximately half the volume of reservoir 5110, and the water level 5184 is indicated by a horizontally extending dashed line.

[0323] When the water storage device 5110 is as follows Figures 34-35In the indicated orientation, if any water 5182 needs to leave the water reservoir 5110, the arrangement of the inlet pipe 5124 and outlet pipe 5126 requires the water level 5184 to rise to the higher end of the inlet pipe 5124 or the higher end of the outlet pipe 5126. On the other hand, in Figures 35-36 In the arrangement shown, the water level 5184 only needs to be raised to the lower end of the inlet pipe 5124 or the outlet pipe 5126 to leave the water reservoir 5110.

[0324] Because the water level 5184 will change as a function of the orientation of the water reservoir 5110, this effect through the inlet pipe 5124 and outlet pipe 5126 can be reproduced in any desired orientation by reorienting the inlet pipe 5124 and outlet pipe 5126 to fit the shape of the water reservoir 5110. In some forms, the inlet pipe 5124 and outlet pipe 5126 may be intersecting when viewed from multiple angles orthogonal to each other.

[0325] exist Figure 27-28 and Figure 34-37 In the configuration shown, the inner inlet and inner outlet are located within the cavity, and the outer inlet and outer outlet are located within one of the cavity's multiple walls. A first axis (inlet pipe axis) is defined by the inner and outer inlet ends, and a second axis (outlet pipe axis) is defined by the inner and outer outlet ends. When the reservoir is tilted (e.g., tilted approximately 90° relative to its normal operating orientation), the first axis is at a first angle, such that the inner and outer inlet ends are positioned at different heights, ensuring that a predetermined maximum volume of water is below at least one of the inner or outer inlet ends to prevent water overflow through the inlet pipe. Furthermore, when the reservoir is tilted (e.g., tilted approximately 90° relative to its normal operating orientation), the second axis is at a second angle, such that the inner and outer outlet ends are positioned at different heights, ensuring that a predetermined maximum volume of water is below at least one of the inner or outer outlet ends to prevent water overflow through the outlet pipe. This effect can also be achieved when the reservoir is tilted at any other angle to suit the design and / or tilting conditions of the humidifier 5000 and / or the reservoir 5110.

[0326] 5.5.2.9 Storage arrangement with removable inlet / outlet pipes

[0327] In another example of this technology, the memory 5110 can be configured as follows: Figures 40a-41 As shown. In this example, the reservoir 5110 includes a cover portion 5114, a middle portion 5202, and a base 5112 (for clarity, in...). Figures 40a-40b(Base not shown). The cover portion 5114 and the intermediate portion 5202 can be configured to releasably engage with each other. They can be further configured to include multiple features, such as an inlet 5118, an outlet 5122, an inlet pipe 5124, and an outlet pipe 5126, while being releasably engaged with each other. For example, the cover portion 5114 may include an inlet 5118, an outlet 5122, and an inlet pipe 5124, and the intermediate portion 5202 may include an outlet pipe 5126, such as... Figure 40b As shown.

[0328] As shown in the figure, the intermediate portion 5202 may further include a baffle 5192 and at least one support spoke 5194. The support spoke 5194 may be provided for structural support and / or to position the outlet pipe 5126 and / or the baffle 5192 on the intermediate portion. The baffle 5192 is arranged to block the direct air path (or short circuit as described above) between the inner end 5125 of the inlet pipe and the inner end 5127 of the outlet pipe to facilitate airflow within the reservoir, thereby improving the absorption of humidity by the airflow within the reservoir 5110. Additionally, the seal 5204 may be integrally formed with the intermediate portion 5202 as shown in the figure, or it may be formed as a separate component from the intermediate portion.

[0329] The advantage of this arrangement can be that it improves the cleanability of the reservoir 5110 by separating some of these components from the reservoir (such as inlet pipe 5124 and / or outlet pipe 5126). This arrangement can be particularly advantageous when at least one of the inlet pipe 5124 or outlet pipe 5126 extends into the internal volume of the reservoir 5110, as such a feature can impede access to the interior of the reservoir 5110. Figures 40a-40b As can be seen, the intermediate portion 5202 engages with the cover portion 5114 in its normal operating orientation. However, since the intermediate portion 5202 is separable from the cover portion 5114, the inlet pipe 5124 and the outlet pipe 5126 can be separated to improve access to the interior of the cover portion 5114.

[0330] By constructing the upper part of the reservoir using two separable portions 5114, 5202 and / or configuring the inlet / outlet pipes 5124, 5126 to be releasably engaged with the reservoir 5110, the number of small, hard-to-access areas can be reduced, which improves the cleanability of the reservoir 5110. Furthermore, the removable inlet pipe 5124 and / or the removable outlet pipe 5126 themselves are also more easily accessible for cleaning.

[0331] In another example of the prior art (not shown separately), the cover portion 5114 and the intermediate portion 5202 may each include multiple portions of a feature, which will be combined to form a complete feature. For example, the cover portion 5114 may include a portion of the inlet pipe 5124 and a portion of the outlet pipe 5126, and the intermediate portion 5202 may include another portion of the inlet pipe 5124 and another portion of the outlet pipe 5126. Those skilled in the art will understand that the reservoir can be further subdivided into any number of separable portions, and separable features such as the inlet pipe 5124 and / or the outlet pipe 5126 can be positioned relative to the separable portions in any number of arrangements.

[0332] Another advantage of this arrangement is improved backflow performance of the reservoir 5110 (preventing liquid from flowing out through the inlet pipe 5124 and / or outlet pipe 5126). Backflow performance can be improved by increasing the internal volume of the reservoir 5110, which can be achieved by introducing a void above the inlet pipe 5124 and / or outlet pipe 5126. Another method to improve backflow performance is to position the inner ends 5125 and / or 5127 of the inlet pipe near the center of the reservoir 5110. Since the reservoir 5110 is typically produced by injection molding, the inlet pipe 5124 and / or outlet pipe 5126, formed as part of the cap 5114, prevent the introduction of a void above the inlet pipe 5124 and / or outlet pipe 5126. In this configuration, the molding tool, including the internal volume of the cap 5114, would be secured in place by pins to the inlet pipe 5124 and / or outlet pipe 5126, making molding either impossible or requiring a complex and expensive tooling arrangement. In this case, the ability to separate the inlet pipe 5124 from the outlet pipe 5126 can be a further advantage.

[0333] It should be understood that the cover portion 5114, the intermediate portion 5202, and the base portion 5112 can be configured in any number and manner. For example, the relative dimensions of the cover portion 5114 and the base portion 5112 can vary, and the cover portion 5114 and / or the base portion 5112 can further include various materials or components in their configuration. One or more of the inlet pipe 5124 and the outlet pipe 5126 can be removably or releasably coupled to the cover portion 5114 or the base portion 5112, for example, as part of the intermediate portion. The intermediate portion can also be configured to initially engage the cover portion 5114 and / or the base portion 5112, for example, by being configured to be inserted into the cover portion 5114 or the base portion 5112.

[0334] Another feature of this arrangement is the use of support spokes 5194 to provide structural rigidity for the central portion 5202 of the cover 5114. The spokes 5194, either alone or in combination with the baffle 5192, can be configured as handles for removing the cover 5114 from the central portion 5202. This improves the usability of the cover 5114, as the user can grasp the baffle 5192 and / or the spokes 5194 to separate the central portion 5202 from the cover portion 5114. It should be understood that many other configurations are possible in which the support spokes 5194 are arranged as follows... Figures 42a-43 Alternatives to the exemplary arrangement shown.

[0335] In examples of the present technology, baffle 5192 may include a positioning portion 5196 and a deflection portion 5198, such as Figures 42a-43 As shown. The positioning portion 5196 may be cylindrical in form to aid in the precise positioning of the baffle 5192 relative to the inlet pipe 5124 through an external adaptation surrounding the vertical portion of the inlet pipe 5124. In some forms, the baffle 5192 may further include a baffle seal 5197 to seal between the baffle 5192 and the inlet pipe 5124, for example as... Figure 47b As shown. The baffle 5192 can also be configured to be combined with these spokes 5194 such that at least some portions of the baffle 5192 can act as spokes 5194, or vice versa.

[0336] The exemplary section of the assembled cover 5114 is in Figures 44a-44b As shown in the diagram. The diameter of the inlet pipe 5124 or the positioning portion 5196 may vary along its length, for example, by arranging it in a truncated conical manner, so as to gradually engage with each other. These two components 5124, 5196 may also be combined with complementary retention mechanisms, such as... Figures 44a-44b The protrusion / groove combination 5205 is shown.

[0337] It should also be understood that seal 5204 may be located in Figures 40a-43 The exemplary arrangement shown has alternative locations. For example, the seal 5204 may be formed as part of the cap portion 5114, part of the reservoir base 5112, or as a separate component that is not integrally formed with any of the cap portion 5114, the intermediate portion 5202, and the base 5112. An exemplary method of forming the seal 5204 having the cap portion 5114 or the base 5112 may be by overmolding or using a chemical adhesive.

[0338] Figure 45 An exploded view of another example of the current technology is shown. In this arrangement, the reservoir 5110 includes a cover portion 5114, a middle portion 5202, and a base portion 5112 (for clarity, in...). Figure 45(Not shown in the image). The intermediate portion 5202 includes an inlet pipe 5124 and an outlet pipe 5126, as well as a wall portion 5206 configured to connect with the cover portion. Alternatively, the intermediate portion 5202 may engage the base portion 5112 and may include one or both of the inlet pipe 5124 and the outlet pipe 5126. In some cases, the wall portion 5206 configured to connect with the cover portion may be connected to one or more of the inlet pipe 5124 and the outlet pipe 5126.

[0339] This configuration allows for the removal of inlet pipe 5124 and / or outlet pipe 5126 to improve the cleanability of reservoir 5110. Furthermore, this configuration can improve the overflow performance of reservoir 5110 by increasing its internal volume.

[0340] In some cases, the inlet pipe 5124 and the outlet pipe 5126 can be arranged such that removing either or both of the pipes 5124 and 5126 from the reservoir 5110 does not affect the predetermined maximum volume of water that the reservoir 5110 can retain. Such a configuration allows these pipes 5124 and 5126 to be cleaned without removing any water from the reservoir 5110.

[0341] Figures 54 to 59 An example of a humidifier tank 5110 (also referred to as a water reservoir) according to the present technology is shown, including a separately formed inlet 5118. As shown, the humidifier tank 5110 includes a base 5112, a cover 5114, and a middle portion 5202.

[0342] The cover 5114 includes an inlet 5118, which includes an inlet pipe 5124 arranged to provide a flow path for an inlet flow of breathable gas into the container, and the cover 5114 includes an outlet 5122, which includes an outlet pipe 5126 arranged to provide a flow path for an outlet flow of humidified breathable gas from the container.

[0343] In the illustrated example, the inlet pipe 5124 is configured as a separate and distinct structure from the cap 5114 (e.g., separately formed (e.g., molded) from the cap) and then subsequently connected to or otherwise disposed to the cap 5114 in an operating position. In one example, the inlet pipe 5124 may comprise a material similar to the cap 5114, such as polycarbonate. In the illustrated example, the outlet pipe 5126 comprises a one-piece construction having the cap 5114, for example, the outlet pipe 5126 being formed, for example, molded, as part of, for example, the cap 5114.

[0344] The inlet pipe 5124 includes an inlet portion 5131 (pipe extension) having an inlet end 5133 and an outlet portion 5135 (vertical inlet) having an outlet end 5137. When the inlet pipe 5124 is attached to the cover 5114, the inlet end 5133 is disposed outside the chamber, and the outlet end 5137 is disposed inside the chamber. In use, the inlet end 5133 is configured to receive a pressurized airflow from the outlet of the RPT device, and the outlet end 5137 is configured to deliver the pressurized airflow into the chamber for humidification.

[0345] The bottom of the barrel 5110 (e.g., the conductive portion 5152) includes a bottom surface defining a bottom plane when the barrel 5110 is in its normal operating orientation (e.g., see...). Figure 57 When the bottom plane is horizontal, it is essentially level. For example... Figure 57 As shown, the inlet portion 5131 extends laterally to the outlet portion 5135. For example, the outlet portion 5135 extends in a plane substantially perpendicular to the bottom plane (e.g., the outlet portion 5135 extends generally vertically), and the inlet portion 5131 extends in a plane oriented at an angle to the bottom plane. In an alternative example, the inlet portion 5131 may extend in a plane substantially parallel to the bottom plane.

[0346] like Figure 59 As shown, the cover 5114 includes an inlet seat 5115 along the outside of the cover 5114. When the inlet pipe 5124 is attached to the cover 5114, the inlet portion 5131 is received in the inlet seat 5115 and the outlet portion 5135 extends into the barrel chamber through a chamber opening 5119 in the cover 5114 (see [link]). Figure 58 ).like Figure 57 As shown, the outlet portion 5135 can engage with the positioning portion 5196 provided on the intermediate portion 5202. The inlet tube 5124 can be secured to the top of the cover 5114 in any suitable manner, for example, by a snap-fit ​​connection.

[0347] Figures 54 to 57 A separately formed inlet 5118 is shown, secured to the cap 5114 in the operating position. As shown, the inlet 5118 is also provided with a friction grip 5166 to assist the patient in holding the bucket during use.

[0348] 5.5.2.10 Prevent overflow

[0349] In some prior art humidifier water containers, overfilling of the water reservoir 5110 may reduce the effectiveness of the overflow prevention features. For example, overfilling can allow liquid in the reservoir 5110 to reach the inlet 5118 at a lower angle compared to when the reservoir 5110 is not overfilled. Therefore, some prior art humidifier water reservoirs have included water fill indicator marks to reduce the occurrence of such overfilling; however, this may only be to mitigate the risk.

[0350] Another aspect of this technology includes one or more overfill protection features configured to prevent the reservoir from being filled above its maximum volume of water when the humidifier reservoir is being filled in the open and / or closed configurations.

[0351] In such Figure 29a and 29b In one arrangement, an overflow protection feature may be included in at least one orifice 5138 in the water reservoir 5110 to indicate overfilling. According to this aspect of the art, when the water reservoir 5110 is refilled with the water reservoir cover 5114 open, overfilling exceeding a predetermined maximum volume of the water reservoir 5110 will cause water to overflow from the orifice 5138. This will indicate to the user that the reservoir 5110 is full and prevent such overfilling. Advantageously, water will overflow only through at least one orifice 5138 rather than from all areas of the water reservoir, resulting in less spillage for the user to clean up. Thus, when the predetermined maximum water volume is exceeded, at least one orifice defines the outflow path of the water. Figure 29a A water reservoir 5110 in an open configuration is shown, wherein the upper flange of the base 5112 does not extend across the periphery of the entire opening, thus creating an orifice 5138. Figure 29b A portion of the base 5112 is shown indicating at least one orifice 5138. The at least one orifice 5138 may be in the form of one or more orifices, holes, slits, or slots, or any other form that allows fluid to flow into and out of the water reservoir 5110. The at least one orifice 5138 may be formed in one or more locations surrounding the upper flange of the base 5112.

[0352] In alternative arrangements, the overflow protection feature may include a slanted profile 5139. For example... Figure 29c and 29dAs shown, the reservoir base 5112 can be arranged such that its side profile has a sloping profile 5139 in one or more directions. This arrangement can also indicate overfilling when the container base 5112 is refilled with liquid or water. In this arrangement, when the container lid 5114 is in its open configuration, water can overflow at the base of the sloping profile 5139 rather than from all areas of the container. Thus, when the water exceeds a predetermined maximum volume, the sloping profile defines the outflow path of the water. An advantage of the above method is that overfilling may become more difficult than in the prior art, and another advantage is that overflow may occur in a more predictable location in response to an attempted overfill.

[0353] Another aspect of this technology is that, when the water reservoir 5110 is in its closed position, the seal 5204 sealably engages the base 5112 and the reservoir cover 5114 and blocks or seals the orifice 5138 or the inclined profile 5139, thereby preventing fluid communication into and out of the water reservoir 5110. One arrangement of this feature is... Figure 30 The figure shows that when the container lid 5114 is closed (the lid is not shown in the figure), the seal 5204 is sealingly engaged with the base 5112 on the outside of the orifice 5138, and liquid or air is no longer allowed to flow into and out of the water container 5110 through the orifice 5138. Similarly, the seal 5204 will engage with the base 5112 to surround the edge of the inclined profile, thereby preventing liquid or air from flowing into and out of the water reservoir 5110 through the inclined profile 5139. In some arrangements, the seal 5204 may be integrally formed with the variable portion 5116, as described above. Alternatively, the seal 5204 may be a separate seal that can be used in reservoirs with or without the variable portion.

[0354] According to another aspect of the invention, the overflow prevention feature can be configured to prevent overflow when a user attempts to fill the memory 5110 in its closed configuration.

[0355] In one form (such as) Figure 48 As shown, without the reservoir base 5112, the overflow prevention feature can form one or more gas locks to prevent further liquid from entering the reservoir 5110 when a predetermined maximum volume of liquid is present in the reservoir 5110. In this form, when the reservoir 5110 is filled in its closed configuration, one or more gas locks will form a gas seal in the reservoir 5110 that is not displaced by the liquid volume in the reservoir 5110. Figure 48 In the example shown, reservoir 5110 is oriented such that the normals to inlet 5118 and outlet 5122 are vertical, because the user oriented the reservoir 5110 while filling it with water. Water level 5184 will rise and reach... Figure 48As shown in the figure, the remaining gas volume in reservoir 5110 can no longer enter inlet pipe 5124 or outlet pipe 5126, and therefore can no longer escape from reservoir 5110. Thus, reservoir 5110 will not be able to receive any other volume of water into its internal volume.

[0356] Preferably, when water is prevented from further entering the reservoir 5110 by the formation of one or more airlocks, the volume of water in the reservoir 5110 is substantially equal to a predetermined maximum volume of liquid to be retained in the reservoir 5110. In some cases, the reservoir 5110 may allow further filling of the inlet pipe 5124 and / or outlet pipe 5126, although these airlocks prevent further water from entering the internal volume. In this case, when the airlocks are formed, the volume of liquid in the reservoir 5110, and the volumes of the inlet pipe 5124 and / or outlet pipe 5126, can be configured such that, when combined, they are substantially equal to a predetermined maximum volume of liquid to be retained in the reservoir 5110.

[0357] In some cases, such as when the normals to inlet 5118 and outlet 5122 may not be parallel, the user may fill reservoir 5110 in one of several orientations when closed. In this case, reservoir 5110 may be configured such that a suitable airlock can be formed on one or more of the several orientations. The airlock need not be formed simply by blocking inlet pipe 5124 and / or outlet pipe 5126. In some forms (not shown), one or more airlocks may be formed by blocking any cavity or port that allows fluid communication between the interior and exterior of reservoir 5110. Furthermore, blocking is not required by a certain volume of liquid in reservoir 5110. In some forms, as the volume of liquid increases, it may deform or move another component to form a seal (and thus an airlock) within the reservoir.

[0358] 5.5.2.11 Fixing clamp

[0359] The reservoir cover 5114 may include a feature by which the water reservoir 5110 will be secured in the water reservoir mating member 5130 once the two members are engaged with each other. In one arrangement, the securing feature may be a protrusion or clip 5142 on the reservoir cover 5114, such as... Figures 31-32 As shown. Figures 31-32 A water reservoir 5110 and a water reservoir docking member 5130 are shown. Here, when the water reservoir 5110 is inserted into the water reservoir docking member 5130, a protrusion or clip 5142 on the water reservoir cover 5114 removably engages with a corresponding docking member locking recess 5144 in the water reservoir docking member 5130. This connection secures the water reservoir 5110 relative to the water reservoir docking member 5130.

[0360] As described above, the variable portion 5116 of the reservoir is compressed to allow the reservoir to be inserted into the mating member 5130. The compression of the variable portion 5116 allows a portion of the reservoir 5110 to slide into the mating member 5130 and allows the protrusion or clip 5142 to initially slide below the outer edge surface of the mating member 5130 to reach the mating member locking recess 5144. The compressive force applied to the reservoir for insertion can then be released to allow the protrusion or clip 5142 to engage with the mating member locking recess 5144 and secure the reservoir 5110 within the mating member 5130. When the reservoir 5110 is secured within the mating member 5130, the variable portion 5116 is no longer in or is in a reduced state of compression. Similarly, in order to remove the water reservoir 5110 from the water reservoir base 5130, the variable portion 5116 must be compressed to disengage the cap retaining protrusion 5142 from the base locking recess 5144.

[0361] The retaining protrusion 5142 can be further configured to have a tapered portion, such as Figure 32 As shown. The tapered portion can be oriented to increase in height away from the insertion direction to gradually increase the interference between the retaining protrusion 5142 and the mating member 5130 during insertion. Those skilled in the art will appreciate that, in an alternative arrangement, the cap retaining protrusion 5142 can be a recess, and the mating member locking recess 5144 can be a corresponding protrusion. Alternatively, the same result as described above can be achieved using any number of retaining features known in the art.

[0362] 5.5.2.12 Water Storage Tank - Humidifier Connection

[0363] In one configuration, the water reservoir 5110 receives the airflow output from the RPT device 4000 at the docking outlet 4132 during use. The water reservoir 5110 is removably connected to the humidifier 5000, for example, configured as (e.g.) Figure 6g-6h (As shown) It can be inserted into docking member 4130. When water reservoir 5110 is engaged with docking member 4130, water reservoir inlet 5118 can receive the airflow output from RPT device 4000 and guide the airflow into water reservoir 5110. As the air travels through reservoir 5110, humidity (i.e., water vapor) is added to the airflow, and the humidified airflow leaves reservoir 5110 through reservoir outlet pipe 5126 and reaches reservoir outlet 5122. Reservoir outlet 5122 is connectable to air circuit 4170 to deliver the humidified airflow to patient 1000.

[0364] Figure 6h The double-ended arrows indicate the relative direction of movement in this arrangement, connecting and disconnecting the humidifier 5000 and the water reservoir 5110, i.e., generally horizontal movement. Figure 6g-6h In the arrangement shown, the water reservoir 5110 is connected to the humidifier 5000 by placing it in the docking member 4130. In this arrangement, the height and shape of the cavity in the docking member 4130 and the water reservoir 5110 are such that, in order to engage the water reservoir 5110 with the docking member 4130, the compliant portion 5116 is compressed, for example, from about 1 mm to about 5 mm, such as about 2 mm, about 3 mm, or about 4 mm. Therefore, the shape of the portion of the water reservoir 5110 inserted into the docking member 4130 is complementary to the shape of the docking member cavity 5160, and when the compliant portion 5116 is compressed, the height of the water reservoir 5110 is slightly less than the height of the docking member cavity 5160, so that the water reservoir 5110 can be inserted into the docking member cavity 5160.

[0365] In one configuration, a compressive force is required to sufficiently compress the compliant portion 5116 and allow relative movement (i.e., sliding) between the water reservoir 5110 and the mating member 4130. For example, a compressive force between approximately 10 N and approximately 30 N, or approximately 20 N, measured at the handle recesses 5154, 5156, or some other compressive force, is required to allow the water reservoir 5110 to be inserted into the mating member 4130. When pressure is applied to the handle recesses 5154, 5156 and the water reservoir 5110 is inserted into the mating member 4130, the vertical clearance achieved between the cavity of the water reservoir 5110 and the mating member 4130 during insertion (or removal) can be between approximately 1 mm and approximately 5 mm, for example, approximately 2 mm, 3 mm, or 4 mm. The water reservoir 5110 and the docking member 4130 can be arranged such that once the water reservoir 5110 is connected to the docking member 4130 and the patient 1000 no longer applies compressive force, the amount of compression in the compliance section 5116 is reduced. The reduction in compression can be between about 0.5 mm and about 2.5 mm, for example, about 1 mm, 1.5 mm, or 2 mm.

[0366] In the layout shown (see) Figures 6a-6b The reservoir outlet 5122 can be connected to the docking inlet 4134, and the humidified airflow travels through the docking inlet to the humidifier outlet 5172. The humidifier outlet 5172 can be connected to the air circuit 4170, such as... Figure 12 As shown by the double-ended dashed arrow (see...) Figure 12The advantage of this arrangement is that the water reservoir 5110 can be removed from the docking member 4130 while the air circuit 4170 remains attached to the device outlet 4004. Therefore, the insertion and removal of the water reservoir 5110 are independent of the connection of the air circuit 4170. Another advantage is that the water reservoir 5110 must be removed from the docking member 4130 to be filled with liquid. In this configuration, neither the inlet 5118 nor the outlet 5122 of the reservoir 5110 is exposed, while the reservoir 5110 is inserted into the humidifier 5000 in the operating configuration, and the reservoir 5110 itself remains accessible to the patient 1000, for example, to allow easy removal from the humidifier 5000. This arrangement reduces the likelihood that the user will overfill the reservoir 5110 beyond a predetermined maximum liquid volume because the reservoir 5110 incorporates features to prevent overfilling. Furthermore, by encouraging users to remove the water reservoir 5110 to fill it with liquid, the likelihood of water overflowing onto or into the humidifier 5000 and / or RPT device 4000 is reduced.

[0367] The compliant portion 5116 may be made of an elastomeric material, such as silicone, thermoplastic elastomer (TPE), TPE polyester, TPE polyurethane, or natural rubber. In selecting the material for the compliant portion 5116, it may be advantageous to choose a material that does not undergo mechanical relaxation within the storage and operating temperature range to which the compliant portion 5116 is exposed. An example of a material for the compliant portion 5116 that meets these requirements could be silicone.

[0368] like Figure 28 As shown, a water reservoir latch 5186 can be provided on the water reservoir 5110 such that when the water reservoir latch 5186 is engaged, it secures the water reservoir cover 5114 and the water reservoir base 5112 together. The latch 5186 prevents the reservoir cover 5114 and the reservoir base 5112 from separating and maintains the compliant portion 5116 in a sealing engagement between the cover 5114 and the base 5112, for example, by compression. In one embodiment, the latch 5186 can be configured to restrict relative movement of the cover 5114 relative to the base 5112 in only one direction, thereby allowing further compression of the compliant portion 5116 while preventing separation of the cover 5114 from the base 5112. This allows the water reservoir 5110 to be inserted into the mating member 4130 and / or allows the compliant portion 5116 to facilitate thermal engagement between the reservoir 5110 and the heating element 5240, as described elsewhere in the invention.

[0369] When in use, the water reservoir 5110 receives, for example, a stream of breathable air output from the PAP device 4000. In one form, such as Figure 12-15As shown, the water reservoir 5110 is removably connected to the humidifier 5000 by inserting it into the water reservoir docking part 5130, for example by sliding. The inlet 5118 of the water reservoir 5110 is configured to receive and direct a breathable gas stream output from the PAP device 4000 into the water reservoir 5110. As the breathable gas travels through the reservoir 5110, a humidified stream of the breathable gas (i.e., water vapor) is added to the breathable gas stream, and the humidified stream of the breathable gas exits the reservoir 5110 through the outlet pipe 5126 and reaches the reservoir outlet 5122. The reservoir outlet 5122 can be connected to the air circuit 4170 to deliver a humidified breathable gas stream to the patient 1000.

[0370] Figure 13 and Figure 15 The double-ended arrows in the diagram indicate the relative direction of movement for connecting and disconnecting the humidifier 5000 and the water reservoir 5110 in this arrangement, i.e., generally horizontal movement. However, the water reservoir 5110 can be coupled to the humidifier 5000 by other methods, such as insertion in a generally vertical direction, connection via one or more intermediate components (e.g., pipes), or integral formation with the humidifier.

[0371] In an alternative arrangement not shown, the water reservoir 5110 may be inserted into the mating cavity 5160 from a vertical direction rather than by a sliding motion. In this arrangement, the mating cavity of the humidifier 5000 may include a movable cover portion, such as a cover or top portion, which opens at least partially to allow the water reservoir 5110 to be inserted and closes after insertion to secure the water reservoir 5110 within the mating cavity 5160.

[0372] In the arrangement shown (see...) Figure 15 The reservoir outlet 5122 can be connected to the reservoir docking member gas inlet 5170, through which a humidified stream of breathable air travels to the humidifier outlet 5172. The humidifier outlet 5172 can be connected to, for example,... Figure 12 The air delivery circuit or air circuit 4170 indicated by the double-ended dashed arrow (see...) Figure 12One advantage of this arrangement is that the humidifier reservoir 5110 must be removed from the reservoir docking part 5130 in order to fill the humidifier reservoir 5110 with liquid. When the humidifier reservoir is connected to the humidifier 5000, this arrangement generally prevents access to any opening in the humidifier reservoir 5110 and reduces the likelihood of the user overfilling the water reservoir 5110 beyond a given maximum liquid volume, as the humidifier reservoir 5110 incorporates overfill prevention features as further described below. Furthermore, when the user is encouraged to remove the water reservoir 5110 to fill it with liquid, the likelihood of water spilling onto or into the humidifier 5000 and / or PAP unit 4000 is reduced.

[0373] like Figure 15 As shown, first and second mating seals 5132 and 5134 can be provided to help seal the connection between the reservoir inlet 5118 and the mating member 5130, as well as the connection between the reservoir outlet 5122 and the mating member 5130.

[0374] exist Figure 14-15 In the illustrated arrangement, the water reservoir 5110 is connected to the humidifier 5000 by placing it in the water reservoir docking member 5130. In this arrangement, the height and shape of the docking member's internal cavity 5160 and the water reservoir 5110 are such that, in order to engage the water reservoir 5110 with the water reservoir docking member 5130, the variable portion 5116 is compressed, for example, from about 1 mm to about 5 mm, such as about 2 mm, about 3 mm, or about 4 mm. Therefore, the shape of the portion of the water reservoir 5110 inserted into the docking member 5130 is complementary to the shape of the docking member cavity 5160, and when the variable portion 5116 is compressed, the height of the water reservoir 5110 is slightly less than the height of the docking member cavity 5160, so that the water reservoir 5110 can be inserted into the docking member cavity 5160.

[0375] The variable part 5116 can be constructed to have, for example, Figure 38The cross-sectional shape is shown. Pressure is required to fully compress the variable portion 5116 and allow relative movement (i.e., sliding) between the water reservoir 5110 and the water reservoir mating member 5130. For example, a compressive force between approximately 10 N and approximately 30 N, or approximately 20 N, measured at the handle recesses 5154, 5156, or some other compressive force, is required to allow the water reservoir 5110 to be inserted into the mating member cavity 5160. When pressure is applied to the handle recess and the water reservoir 5110 is inserted into the water reservoir mating member 5130, the vertical clearance achieved between the water reservoir 5110 and the mating member cavity 5160 during insertion (or removal) can be between approximately 1 mm and approximately 5 mm, for example, approximately 2 mm, 3 mm, or 4 mm. The water reservoir 5110 and the water reservoir docking member 5130 can be arranged such that once the water reservoir 5110 is connected to the water reservoir docking member 5130 and the patient 1000 no longer applies compressive force, the amount of compression in the variable portion 5116 is reduced. The reduction in compression can be between about 0.5 mm and about 2.5 mm, for example, about 1 mm, 1.5 mm, or 2 mm.

[0376] The variable portion 5116 may be constructed from an elastomeric material, such as silicone, TPE, TPE polyester, TPE polyurethane, or natural rubber. In selecting the material for the variable portion 5116, it may be advantageous to choose a material that does not undergo mechanical relaxation within the storage and operating temperature range to which the variable portion 5116 may be exposed. An example of a material for the variable portion 5116 that meets these requirements could be silicone.

[0377] like Figure 28 As shown, a water reservoir latch 5186 can be provided on the water reservoir 5110 such that when the water reservoir latch 5186 is engaged, it secures the water reservoir cover 5114 and the water reservoir base 5112 together. The latch 5186 prevents the reservoir cover 5114 and the reservoir base 5112 from separating and maintains the variable portion 5116 in a sealed engagement between the cover 5114 and the base 5112, for example, by compression. In one form, the latch 5186 can be configured to restrict relative movement of the cover 5114 relative to the base 5112 in only one direction, thereby allowing further compression of the variable portion 5116 while preventing separation of the cover 5114 from the base 5112. This allows the water reservoir 5110 to be inserted into the water reservoir mating member 5130, and / or allows the variable portion 5116 to facilitate thermal bonding between the water reservoir 5110 and the heating plate 5120, as described elsewhere in the invention.

[0378] 5.5.2.12.1 Precompression for improving thermal contact

[0379] According to one aspect of this technology, the water reservoir 5110 and the heating plate 5120 of the humidifier are in thermal contact or thermally joined as described above. The degree of thermal contact between the two components, for example, the degree of thermal contact measured in thermal conductivity or thermal contact resistance, can vary according to a number of parameters.

[0380] In the prior art, additional components have been used to improve the thermal contact between the water reservoir and the heater plate by increasing the contact pressure between them. One example is the use of a spring element for connecting the heater plate to the humidifier body, as described in US 4,203,027, thereby pushing the heater plate toward the water reservoir. Another example is a humidifier with a lid, in which a compressible elastomer seal is disposed on the lid, as described in WO2010 / 031126. In this example, when the lid is in its closed position, the seal engages against the water reservoir and pushes the water reservoir against the heater plate.

[0381] In this technology, pre-compression of the water reservoir 5110 (e.g., engagement with the water reservoir docking part 4130) can be used to help improve the thermal contact between the water reservoir 5110 and the heating element 5240.

[0382] In one arrangement, the water reservoir 5110 can be configured such that, in its operational configuration, for example when it is placed in the water reservoir dock 4130, the compliant portion 5116 is compressed as described above. The reservoir 5110 and the reservoir dock 4130 can be further configured such that the reaction force of the compression on the compliant portion 5116 pushes the base 5112 of the water reservoir 5110 against the heating element 5240 to improve thermal contact therebetween.

[0383] Therefore, the compliant portion 5116 can act as a spring, which is biased to push the reservoir base 5112 and / or reservoir cover 5114 in a direction perpendicular to the heating element 5240. When the reservoir 5110 is externally fastened (such as being confined within the reservoir mating member 4130), the compression of the compliant portion 5116 is acted upon by a force that promotes improved thermal engagement with the heating element 5240.

[0384] When the water reservoir 5110 is connected to the humidifier 5000, the force required to compress the compliant portion 5116 is preferably in the same direction as the normal to the surface of the conductive portion. This direction may also preferably be the same as the direction of thermal bonding. This force is reacted by the water reservoir mating member 4130 at its contact point and / or surface, thereby pushing the base 5112 of the water reservoir 5110 and the heating element 5240 together.

[0385] When the water reservoir 5110 is placed in the water reservoir docking member 4130, the magnitude of the compressive force, when measured at the heating element 5240, can be between approximately 5 N and approximately 15 N. However, it should be understood that different configurations of the water reservoir 5110 may require different magnitudes of compressive force. This force can be altered by modifying the design of any or all of the conformal portion 5116, the cap 5114, the base 5112, or the reservoir docking member 4130. For example, if the conformal portion 5116 is made of a material with a higher Young's modulus, it will correspondingly increase the magnitude of the force. It should be noted that... Figures 19-20 Only the forces and pressures in the vertical direction are shown.

[0386] In some cases, the amount of compression of the compliant portion 5116 in the reservoir 5110 can be used to change the level of thermal bonding between the conductive portion and the heating element 5240.

[0387] 5.5.2.12.2 Other Examples

[0388] Figure 60 , 61a Figures 61b and 61b illustrate an example of a humidifier tank 5110 (water reservoir) including a retaining mechanism according to the present technology. In this example, a retaining protrusion 5142 for releasably engaging a locking recess 5144 in a docking member 5130 is located on a swingable latch 5400.

[0389] In the illustrated example, latch 5400 is configured as a separate and distinct structure from barrel 5110, and is then fastened or otherwise set to barrel 5110 in the operative position. For example, latch 5400 includes a pre-formed structure fastened to lid 5114. In one example, latch 5400 may comprise a plastic or thermoplastic polymer material.

[0390] The latch 5400 includes a locking lever 5410 and a support member 5420 to resiliently support the locking lever 5410 against the cover 5114. The locking lever 5410 includes a push-button end 5412 at one end and a locking end 5414 at the other end. In the example shown, the support member 5420 is in the form of a spring that supports the locking lever 5410 against the cover 5114 and resiliently biases the latch 5400 to the unlocked position.

[0391] The locking end 5414 includes a retaining protrusion 5142, and the button end 5412 includes a gripper 5413 (e.g., a recess) to help the patient hold the bucket and operate the latch 5400. The button end 5412 also includes a pawl feature to retain the latch 5400 in a locked position; for example, the button end 5412 includes a bump 5430 adapted to releasably engage within a corresponding recess 5111 in the cover 5114.

[0392] Figure 61a The latch 5400 is shown in the unlocked position. As shown, the pawl feature is disengaged, which allows the push button end 5412 to be raised and / or biased upward into an elevated position, which lowers the locking end 5414 downward into a recessed position. That is, the push button end 5412 of the latch 5400 can be raised to lower the height of the locking end 5414 and its protrusion 5142, thereby allowing them to enter the mating member and be below the mating member locking recess 5144. Once within the mating member, the push button end 5412 of the latch 5400 can be pressed down into the recessed position to increase the height of the locking end 5414 and its protrusion 5142, which allows the protrusion 5142 to engage within the mating member locking recess 5144 to releasably lock and hold the barrel in an operating position within the mating member, i.e., the protrusion 5142 engages behind the front end forming the recess 5144. These protrusions 5142 may include tapered portions so that these protrusions 5142 engage with these recesses 5144. Figure 61b A latch 5400 is shown in the locked position, with the locking end 5414 in the raised position. (See diagram) Figure 61b As shown, the pawl feature captures the latch 5400 in the locked position. It should be understood that the position of the spring 5420 can be determined to bias the locking end 5414 into either the recessed or raised position.

[0393] Figures 62 to 65 Another example of a humidifier reservoir 5110 including a swing latch 5400 according to the present technology is shown.

[0394] In this example, locking lever 5410 is pivotally connected to cover 5114, allowing latch 5400 to pivot about pivot axis PA. Pushbutton end 5412 includes a "release" region 5412R on one side offset from pivot axis PA and a "lock" region 5412L on the other side offset from pivot axis PA. This arrangement allows pushbutton end 5412 to be pressed down to release and lock latch 5400. In the example shown, spring 5420 biases latch 5400 to either the released or unlocked position.

[0395] In this example, the locking end 5414 includes a single extending retaining protrusion 5142, and it will be understood that the mating locking recess 5144 in the mating member 5130 can be shaped to receive the single protrusion 5142. Alternatively, Figures 62 to 65 The locking end 5414 shown can take the following actions: Figure 60 , 61a It takes the form of the locking end 5414 shown in 61b to mate with the previously described mating locking recess 5144.

[0396] Figure 64The latch 5400 in the unlocked position is shown. As shown, the "release" region 5412R can be pressed down, causing the button end 5412 to pivot about axis PA to lower the height of the protrusion 5142, thereby allowing it to enter the mating member and be below the mating member locking recess 5144. Once inside the mating member, the "lock" region 5412L can be pressed down, causing the button end 5412 to pivot about axis PA to increase the height of the protrusion 5142 on the locking end 5414. This allows the protrusion 5142 to engage within the mating member locking recess 5144 to releasably lock and retain the barrel in an operating position within the mating member, i.e., the protrusion 5142 engages behind the front end forming the recess 5144. Figure 65 The latch 5400 is shown in the locked position. (See diagram.) Figure 65 As shown, similar to the example above, the pawl feature captures the latch 5400 in a locked position. For example, the button end 5412 includes a protrusion 5430 adapted to releasably engage within a corresponding recess 5111 in the cover 5114. It should be understood that a spring 5420 can be used to bias the locking end 5414 into the recessed position (e.g., Figure 64 (as shown) or at an elevated position.

[0397] Figure 66 and 67a Another example is depicted in 67d, in which a tongue key is used in the engagement between barrel 5110 and mating part 5130.

[0398] In this example, one or both sides of the humidifier barrel 5110 include a tongue 5500, for example, the tongue 5500 is arranged to project laterally outward from the lid 5114 of the barrel. The tongue 5500 is configured and arranged to pass through a corresponding keyway 5600 formed in the mating member 5130, the keyway guiding the barrel 5110 into an operating position within the mating member 5130.

[0399] In the example shown, each sidewall of the mating member 5130 includes a top keyway 5610 and a bottom keyway 5620, which are configured from the keyway 5600 to receive a corresponding tongue 5500 on each side of the barrel 5110.

[0400] During insertion of the barrel 5110 into the mating member 5130, the barrel 5110 moves in a generally horizontal direction until each tongue 5500 passes over the corresponding bottom keyway 5620 and engages the corresponding stop wall or stop surface 5612 provided by the top keyway 5610 (see, for example). Figure 67a and 67b Then press down the lid 5114 to compress the compliant portion 5116 and allow the tongue 5500 to lower or fall below the corresponding guide wall or guide surface 5614 provided by the top keyway 5610 (see, for example, see...). Figure 67cThis downward or vertical movement of the tongue 5500 will allow it to slide beneath and over the top keyway 5610. The barrel 5110 slides further into the mating member 5130 in a generally horizontal direction until it reaches its operating position. When the barrel 5110 reaches its fully seated or operating position, the tongue 5500 is outside the corresponding guide wall or guide surface 5614 provided by the top keyway 5610, which allows the cap 5114 to elastically return to its unpressed state. This allows the tongue 5500 to rise behind the top keyway 5610 (see, for example, [reference needed]). Figure 67d This allows the cap retaining protrusion 5142 to engage with the corresponding mating locking recess 5144. This tongue-and-key engagement structure effectively locks the barrel in the operating position and prevents accidental release during handling, such as unintentional release.

[0401] Figures 68 to 73 Another example is depicted, in which the tapered surface of the retaining protrusion 5142 on the barrel 5110 is replaced by a flat surface 5143, which is configured and arranged to engage the outer surface 5145 of the mating member 5130 adjacent to the locking recess 5144 during insertion of the barrel 5110. This engagement prevents the barrel 5110 from being fully inserted into the mating member 5130 until the user presses the cap 5114 against the base 5112 to compress the compliant portion 5116 and allow the protrusion 5142 and its flat surface 5143 to lower or descend below the outer surface 5145 of the mating member 5130, thereby allowing the protrusion 5142 and the barrel 5110 to further enter the mating member 5130. Once the protrusion 5142 has passed the outer surface 5145, the cap 5114 will elastically return to its unpressed state, and the retaining protrusion 5142 will rise to engage the corresponding mating member locking recess 5144. Figures 70 to 73 The insertion and engagement of the barrel 5110 and the mating member 5130 are shown. Figure 70 In this configuration, the plane 5143 of each protrusion 5142 engages with the outer surface 5145 of the mating member 5130, preventing the barrel 5110 from being further inserted into the mating member 5130. Figure 71 In this case, the user presses the lid 5114 of the bucket 5110 to lower the level of each protrusion 5142 below the outside 5145 of the mating part 5130. Figure 72 In the middle, the barrel 5110 further slides into the docking part 5130 and enters the operating position. Figure 73 In the middle, the lid 5114 is released and elastically returns to its unpressed state, and the retaining protrusion 5142 engages in the corresponding mating locking recess 5144 to effectively lock the barrel 5110 in the operating position and prevent accidental release, for example, during handling.

[0402] Figure 77 , 7879a and 79b depict another example in which a cam slide lock 5400 is used to pull the bucket 5110 to the fully engaged operating position and releasably lock the bucket 5110 in the operating position.

[0403] In the example shown, the sliding lock 5400 includes a slider 5460 slidably supported on a lid 5114 of a barrel 5110, a finger 5462 extending from the slider 5460, and a knob or retaining protrusion 5465 at the end of the finger 5462. In use, the sliding lock 5400 can be in the (1) unlocked position (see...) Figure 77 , 78 and 79a) and (2) Lock position (see Figure 79b It can slide laterally between the two parts, allowing the bucket 5110 to be inserted / removed from the docking member 5130 in the unlocked position, and releasably locking or securing the bucket 5110 in the operating position of the docking member 5130 in the locked position.

[0404] In the example shown, the top plate or top wall of the docking member 5130 includes a stop wall or stop surface 5470 and a ramp or cam surface 5475, which are configured to interact with the sliding lock 5400 during insertion of the barrel 5110.

[0405] When the barrel 5110 is inserted into the mating member 5130, the finger 5462 and the retaining protrusion 5465 of the sliding lock 5400 extend into the mating member 5130 until the retaining protrusion 5465 engages the stop wall or stop surface 5470 extending from the top plate of the mating member 5130 (see...). Figure 79a ).like Figure 79a As shown, the retaining protrusion 5465 is located outside the lower edge of the ramp or cam surface 5475, which allows the sliding lock 5400 to move from the unlocked position via the slider 5460 (see [link]). Figure 77 , 78 And 79a) slide laterally to the locked position (see 79a) Figure 79b When the sliding lock 5400 moves from the unlocked position via the slider 5460 (see...) Figure 77 , 78 And 79a) Slide to the locked position (see 79a) Figure 79b When the barrel 5110 is fully seated or in operation, the retaining protrusion 5465 engages and slides along the ramp or cam surface 5475 extending from the top plate of the mating member 5130, which pulls or drags the barrel 5110 to its fully seated operating position. When the barrel 5110 reaches its fully seated or operating position, the retaining protrusion 5465 engages within a pawl 5476 disposed near the end of the ramp or cam surface 5475. The pawl captures the retaining protrusion 5465 to hold the sliding lock 5400 in the locked position until disengaged by the user. This engagement of the retaining protrusion 5465 with the ramp or cam surface 5475 effectively locks the barrel 5110 in the operating position and prevents accidental release, for example, during handling.

[0406] Figures 80 to 83 Depicting another example, where a cam-driven sliding lock (e.g., similar to...) Figures 94 to 96 The cam-sliding lock shown) and the swing latch (e.g., similar to) Figures 60 to 65 The combination of the swinging latch shown.

[0407] In this example, the retaining mechanism on the lid 5114 of the bucket 5110 includes a slider 5460 configured to interact with a locking lever 5410 to releasably lock or retain the bucket 5110 to the docking member 5130 in the operating position.

[0408] The slider 5460 is slidably supported on the lid 5114 of the barrel 5110. The underside of the slider 5460 includes a ramp or cam surface 5467. In use, the slider 5460 can be in (1) an unlocked position (e.g., see...). Figure 81a and 82a (2) Locking position (for example, see) Figure 81b and 82b Between the two positions, the barrel 5110 is allowed to be inserted / removed from the docking member 5130 in the unlocked position, and the barrel 5110 can be releasably locked or secured in the operating position of the docking member 5130 in the locked position.

[0409] Locking lever 5410 is pivotally connected to cover 5114 for pivoting movement about pivot axis PA. Locking lever 5410 includes a sliding engagement end 5412, which includes a ramp or cam surface 5417 configured to interact with a ramp or cam surface 5467 of slider 5460. Locking lever 5410 includes a locking end 5414, which includes a retaining protrusion 5142. In the example shown, spring 5420 biases locking lever 5410 to a locked position.

[0410] The slider 5460 is configured to slide along a track in the cover 5114 while engaging the ramp or cam surface 5417 on the locking lever 5410, so that the locking lever 5410 swings up or down (i.e. raises or lowers the retaining protrusion 5142). Figure 81a and 82a The slider 5460 is shown in the unlocked position. As shown, the ramp or cam surface 5467 of the slider 5460 engages the ramp or cam surface 5417 on the locking lever 5410 to pivot the locking lever 5410 about axis PA and lower the height of the protrusion 5142, thereby allowing it to enter the mating member 5130 and below the mating member locking recess 5144. Once within the mating member 5130, the slider 5460 can slide into the locked position, as shown. Figure 81b and 82bAs shown, the ramp or cam surface 5467 of the slider 5460 disengages from the ramp or cam surface 5417 on the locking lever 5410, which allows the locking lever 5410 to pivot and raise the height of the protrusion 5142, allowing the protrusion 5142 to engage within the mating member locking recess 5144 to releasably lock the barrel and hold it in the operating position within the mating member. Figure 83 The slider 5460 is shown in the locked position. (See diagram.) Figure 81a As shown, similar to the example above, the pawl feature captures the slider 5460 in the unlocked position. For example, the slider 5460 includes a protrusion 5430 adapted to releasably engage within a corresponding recess 5111 in the locking lever 5410. It should be understood that the spring 5420 can be used to bias the locking lever to either the locked or unlocked position.

[0411] Figures 84 to 86 Another example is depicted in which the rotating rod 5700 extends through the top plate of the docking member 5130 to releasably engage the barrel retention feature 5142 formed on the lid 5114 of the barrel 5110.

[0412] In this example, the rotating lever 5700 includes a lever handle 5710 disposed on a top plate of the mating member 5130. One end of the handle 5710 is pivotally connected to the mating member 5130 to allow the handle 5710 to pivot about a pivot axis PA between an unlocked position and a locked position. The opposite end of the handle 5710 includes a retention knob 5715 protruding into a cavity of the mating member 5130.

[0413] In the example shown, the barrel retention feature 5142 is in the form of a protrusion including a curved ramp or cam surface 5417 leading to a recess or lever seat 5111.

[0414] When the barrel 5110 is inserted into the mating part 5130, the barrel retaining feature 5142 moves into the mating part 5130 until it is positioned adjacent to the retaining knob 5715 rotating rod 5700 (see Figure 85 When the rotating lever 5700 moves from the unlocked position via the handle 5710 (see...) Figure 85 Rotate to the locked position (see) Figure 86When the barrel 5110 is fully seated, the retaining knob 5715 engages the curved ramp or cam surface 5417 of the barrel retaining feature 5142 and slides along the curved ramp or cam surface, which pulls or drags the barrel 5110 to its fully seated operating position. When the barrel 5110 reaches its fully seated or operating position, the retaining knob 5715 engages within a lever seat 5111 located near the end of the ramp or cam surface 5417, which captures the retaining knob 5715 to hold the rotating lever 5700 in a locked position until disengaged by the user. This engagement of the retaining knob 5715 with the barrel retaining feature 5142 effectively locks the barrel 5110 in the operating position and prevents accidental release, for example, during handling.

[0415] Figure 87 , 88a 88b depicts another example in which the release knob 5800 unfolds through the top plate of the docking member 5130 to releasably engage the lid 5114 of the barrel 5110.

[0416] In this example, the release knob 5800 includes a knob 5810 and a threaded shaft 5820 that threadedly engages with the top plate of the mating member 5130. In use, the release knob 5800 can be in a (1) locked position (e.g., see...). Figure 87 and 88a (1) and (2) unlock location (for example, see Figure 88b Rotating between the two positions, the locking position releasably locks or secures the bucket 5110 to the docking member 5130 in the operating position, and the unlocking position allows the bucket 5110 to be inserted into / removed from the docking member 5130.

[0417] like Figure 88a As shown, when the release knob 5800 is in the locked position, the free end of the threaded shaft 5820 is fully recessed into the top plate of the mating member 5130. This allows the cover 5114 to be in an unpressurized state, and thereby allows its retaining protrusion 5142 to engage the corresponding mating member locking recess 5144 to effectively lock the barrel 5110 in the operating position. Figure 88b As shown, when the release knob 5800 is in the unlocked position, the free end of the threaded shaft 5820 extends into the cavity of the mating member 5130 and beyond the mating member locking recess 5144, which is arranged such that the free end of the threaded shaft 5820 engages with the cover 5114 to hold the cover 5114 in a compressed state, and thereby prevents the retaining protrusion 5142 from engaging in the corresponding mating member locking recess 5144 to allow the insertion / removal of the barrel 5110.

[0418] Figures 89a to 89d Another example is shown, in which the release knob 5800 is slidably engaged with the top plate of the mating member 5130, instead of as... Figure 87 , 88aIt can be rotatably engaged as in 88b.

[0419] In this example, the release knob 5800 includes a knob 5810 disposed within the top plate of the mating member 5130 and a barrel engagement end 5820. In use, the release knob 5800 can be in a (1) locked position (e.g., see...). Figure 89a and 89c (2) Unlock location (for example, see Figure 89b and 89d Slide between the two parts to releasably lock or secure the bucket 5110 to the docking member 5130 in the locked position, and allow the bucket 5110 to be inserted into / removed from the docking member 5130 in the unlocked position.

[0420] like Figure 89c As shown, when the release knob 5800 is in the locked position, the barrel engagement end 5820 of the release knob 5800 is fully recessed into the top plate of the mating member 5130. This allows the cover 5114 to be in an unpressed or uncompressed state, thereby allowing its retaining protrusion 5142 to engage the locking recess 5144 of the mating member to effectively lock the barrel 5110 in the operating position. Figure 89d As shown, when the release knob 5800 is in the unlocked position, the barrel engagement end 5820 of the release knob 5800 protrudes into the cavity of the docking member 5130 and extends beyond the docking member locking recess 5144, which is arranged to engage with the barrel engagement end 5820 of the cover 5114 to hold the cover 5114 in a pressed or compressed state, thereby preventing the retaining protrusion 5142 from engaging within the docking member locking recess 5144 to allow the insertion / removal of the barrel 5110.

[0421] Figure 90 and 90a Another example is depicted up to 90c, in which a release knob 5800 or a rotating wedge is configured on the barrel 5110 itself to move the barrel 5110 between a pressed and unpressed state.

[0422] In this example, the release knob 5800 includes a knob 5810 and a tapered shaft 5820, the tapered shaft being threadedly disposed between the cover 5114 and the base 5112 of the barrel 5110. In use, the release knob 5800 can be in a (1) locked position (e.g., see...). Figure 90b (2) Unlock location (for example, see Figure 90c Rotate between the two positions to releasably lock or hold the barrel 5110 in the operating position or allow insertion / removal of the barrel 5110 from the docking member 5130 in the unlocked position.

[0423] like Figure 90bAs shown, when the release knob 5800 is rotated to the locked position, the tapered shaft 5820 protrudes into the barrel 5110 and acts as a wedge to expand the cover 5114 and the base 5112, thereby allowing the retaining protrusion 5142 on the cover 5114 to rise and engage the corresponding mating locking recess 5144 to effectively lock the barrel 5110 in the operating position. Figure 90c As shown, when the release knob 5800 is rotated to the unlocked position, the tapered shaft 5820 retracts from the barrel 5110 to cause the cap 5114 and the base 5112 to collapse, thereby allowing the retaining protrusion 5142 on the cap 5114 to lower and release from the corresponding mating locking recess 5144 to allow the insertion / removal of the barrel 5110.

[0424] Figure 91 and 92 Another example is depicted in which the top plate of the docking member 5130 includes a pivotable latch 5400, which is configured and arranged to releasably engage the lid 5114 of the barrel 5110 to hold the barrel in a fully seated or operational position. This configuration can be used in place of the previously described retention protrusions and docking member locking recesses.

[0425] In this example, one end 5410 of the pivotable latch 5400 is pivotally connected to the top plate of the mating member 5130, and the opposite end includes a retaining protrusion 5142. In use, the latch 5400 can be in a locked position (1) (see, for example, see...) Figure 91 (1) and (2) unlock location (for example, see Figure 92 The latch 5400 can be rotated between the operating and unlocking positions to releasably lock or retain the bucket 5110 to the mating member 5130, and to allow insertion / removal of the bucket 5110 from the mating member 5130. When the bucket 5110 is inserted into the mating member 5130, the latch 5400 can be rotated to the locked position to allow the latch 5400 to engage within a recess in the lid 5114, which is configured to receive the latch 5400 and allow its retaining protrusion 5142 to clamp downwards above and behind an edge or hook on the lid 5114 (e.g., by snap-fit ​​engagement) to effectively lock the bucket 5110 in the operating position. The latch 5400 can be rotated to the unlocked position to allow the latch 5400 to disengage from the lid 5114 and allow its retaining protrusion 5142 to rise from behind an edge or hook on the lid 5114 to allow insertion / removal of the bucket 5110.

[0426] Figure 93a and 93b An example of a lid 5114 of a bucket 5110 including a pivotable latch 5400 is depicted. The pivotable latch is constructed and arranged to releasably engage the top plate of the docking member 5130 to hold the bucket in a fully seated or operational position.

[0427] In this example, one end 5410 of the pivotable latch 5400 is pivotally connected to the lid 5114 of the barrel 5110, and the opposite end includes a retaining protrusion 5142. In use, the latch 5400 can be in a locked position (1) (see, for example, see...) Figure 93a (1) and (2) unlock location (for example, see Figure 93b The latch 5400 can be rotated between the operating and unlocking positions to releasably lock or retain the bucket 5110 to the docking member 5130, and to allow insertion / removal of the bucket 5110 from the docking member 5130. When the bucket 5110 is inserted into the docking member 5130, the latch 5400 can be rotated to the locking position to allow the latch 5400 to engage within a recess in the lid 5114, which is configured to receive the latch 5400 and allow its retaining protrusion 5142 to clamp downwards over and behind an edge or hook (e.g., by snap-fit) on the top plate of the docking member 5130 to effectively lock the bucket 5110 in the operating position. The latch 5400 can be rotated to the unlocking position to allow the retaining protrusion 5142 of the latch 5400 to rise from behind the edge or snap onto the docking member 5130 to allow insertion / removal of the bucket 5110.

[0428] 5.5.2.13 Conducting Section 5120

[0429] According to one arrangement, the reservoir 5110 includes a conductive portion 5120 configured to allow heat to be efficiently transferred from the heating element 5240 to a volume of liquid within the reservoir 5110. In one form, the conductive portion 5120 may be arranged as a plate, but other shapes are equally applicable. All or part of the conductive portion 5120 may be made of a thermally conductive material, such as aluminum (e.g., with a thickness of approximately 2 mm, such as 1 mm, 1.5 mm, 2.5 mm, or 3 mm), another thermally conductive metal, or some plastics. In some cases, suitable thermal conductivity may be achieved using materials with appropriate geometries and lower thermal conductivity.

[0430] 5.5.2.13.1 Thermal contact / bonding

[0431] According to one aspect of this technology, the water reservoir 5110 and the heating plate 5120 of the humidifier are in thermal contact or thermally joined as described above. The degree of thermal contact between the two components, for example, the degree of thermal contact measured in thermal conductivity or thermal contact resistance, can vary according to a number of parameters.

[0432] In the prior art, additional components have been used to improve the thermal contact between the water reservoir and the heater plate by increasing the contact pressure between them. One example is the use of a spring element for connecting the heater plate to the humidifier body, as described in US 4,203,027, thereby pushing the heater plate toward the water reservoir. Another example is a humidifier with a lid, in which a compressible elastomer seal is disposed on the lid, as described in WO2010 / 031126. In this example, when the lid is in its closed position, the seal engages against the water reservoir and pushes the water reservoir against the heater plate.

[0433] 5.5.2.13.1.1 Using pressurized gas to improve thermal contact

[0434] According to another aspect, when the water reservoir 5110 is connected to the humidifier 5000, the breathable gas flow received from the PAP device can pressurize a chamber (such as the interior of the reservoir 5110). This pressurization can be used to increase the level of thermal engagement (i.e., thermal contact) between the reservoir 5110 and the heater plate 5120. The reservoir 5110 can be further configured such that the level of thermal contact between the reservoir 5110 and the heater plate 5120 can be altered by changing the pressure level within the chamber.

[0435] In one embodiment, the variable portion 5116 may be configured to expand in the direction of thermal contact, and the reservoir 5110 may be constrained in the same direction by the reservoir mating member 5130. In this embodiment, internal pressure pushes the base 5112 of the water reservoir 5110 against the heater plate 5120 to improve the level of thermal bonding between the heater plate 5120 and the base 5112.

[0436] Figure 20 This effect is illustrated by the force or pressure applied to the cover 5114 and the base 5112 as indicated by the arrows shown. Figure 20 The force and pressure are shown only in the vertical direction, because in this form, the thermal bonding occurs in the vertical direction. The presence of a pressure higher than atmospheric pressure within the water reservoir 5110 results in a force in the thermal bonding direction, and a reaction force is exerted at the contact surface of the water reservoir mating member 5130, thereby pushing the base 5112 of the water reservoir 5110 and the heater plate 5120 towards each other in the thermal bonding direction. When measured at a pressure of 20 cm H2O on the heating plate 5120, the magnitude of the force can be between approximately 5 N and approximately 15 N.

[0437] It should be understood that different configurations of the water reservoir 5110 may require different magnitudes of force, which can be achieved by changing the surface area of ​​the pressure action or the effective pressure acting on the surface. This change can be achieved, for example, by a pressure regulating valve.

[0438] In another arrangement, essentially the same effect as described above can be achieved using a non-opening variable portion of the water reservoir 5110. The water reservoir 5110 and the water reservoir mating member 5130 can be arranged such that elasticity or flexibility is provided by an elastomeric material or joint that allows free movement in the direction of heat transfer (e.g., a sliding connection, or a telescopic section of a flexible plastic or flexible portion within the water reservoir). In this configuration, the cover 5114 and the base 5112 can be unconstrained relative to each other in the direction of thermal contact. The reservoir 5110 can then be restricted in the direction of heat transfer in another way (e.g., via the water reservoir mating member or a similar housing) to generate reaction forces to balance the pressure generated within the reservoir 5110 by the pressurized breathable airflow; some of these reaction forces may occur at the heating plate 5120 to improve thermal contact. In such an arrangement, another opening for refilling the water reservoir 5110 can be introduced on the reservoir 5110, such as on the cover 5114, and it can include a separate seal.

[0439] Figure 33 An example of this arrangement is shown, including a base 5174, a top 5176, a variable portion 5178, and a refill cover 5180. The base, top, and variable portion can be attached together in another arrangement, wherein refilling of the reservoir is accommodated by the refill cover 5180. The refill cover 5180 can be positioned such that it is inaccessible when the humidifier reservoir 5110 is engaged with the reservoir docking member 5130. This arrangement retains the aforementioned advantage that the reservoir 5110 cannot be refilled when engaged with the reservoir docking member 5130. Furthermore, the variable portion 5178 can be replaced by any mechanism known in the art capable of accommodating variations in vertical length within the reservoir.

[0440] In another alternative arrangement, a breathable airflow can be used to improve the level of thermal contact between the humidifier reservoir 5110 and the heater plate 5120 by pressurizing or inflating an auxiliary component. The auxiliary component can be a chamber, body, or surface acting on the humidifier reservoir 5110, which in turn pushes the water reservoir 5110 and the heater plate 5120 together in a thermally engaging direction. Similarly, a second component can act on the heater plate 5120 to push the heater plate 5120 and the water reservoir 5110 together in a thermally engaging direction.

[0441] Auxiliary components may be arranged outside the reservoir 5110 and / or heater plate 5120. Furthermore, the auxiliary components may be configured to vary the area of ​​contact with the reservoir 5110 and / or heater plate 5120 to further curve the change in thermal contact as the pressure of the breathable gas flow changes.

[0442] In an alternative arrangement, the water reservoir docking member 5130 may include a retention mechanism (e.g., a cover that closes around the water reservoir 5110) to hold the water reservoir 5110 in its intended position. In this arrangement, the water reservoir docking member cover may be configured to compress and / or restrict the variable portion 5116 to improve the level of thermal contact.

[0443] The level of thermal contact can be further improved by using spring-loaded or pop-out heater plates known in the prior art. The heater plate can be configured to have a raised or dome shape facing the humidifier reservoir 5110, such that when the humidifier 5110 engages with the reservoir docking member 5130, the raised heater plate flattens, generating a clamping force that pushes the heater plate 5120 toward the water reservoir 5110. Similarly, the heat-conducting plate 5152 of the water reservoir 5110 can be dome-shaped or convex and is configured to flatten toward the heater plate when the water reservoir 5110 engages in the docking member cavity 5160 of the humidifier 5000.

[0444] Any of the aforementioned devices for improving thermal contact may be used independently of each other or in any combination thereof, including in combination with any prior art device for achieving or improving thermal bonding between the humidifier reservoir and the heating plate.

[0445] 5.5.2.14 Humidifier transducer 5270

[0446] Humidifier 5000 may include one or more humidifier transducers (sensors) 5270, instead of the transducer 4270 described above, or may include one or more humidifier transducers (sensors) in addition to the transducers described above. Humidifier transducer 5270 may include one or more of a pressure sensor, an airflow sensor, a temperature sensor, or a humidity sensor, such as... Figure 5i As shown. The humidifier transducer 5270 can generate one or more output signals, which can be transmitted to a controller, such as a central controller 4230 or a humidifier controller 5250. In some forms, the humidifier transducer can be located outside the humidifier 5000 (such as in the air circuit 4170) while transmitting output signals to the controller.

[0447] 5.5.2.14.1 Pressure transducer 5212

[0448] In addition to the pressure sensor 4272 provided in the RPT device 4000, or instead of the pressure sensor provided in the RPT device, one or more pressure transducers 5212 may be provided to the humidifier 5000.

[0449] 5.5.2.14.2 Flow transducer 5214

[0450] In addition to the flow sensor 4274 provided in the RPT device 4000, or instead of the flow sensor provided in the RPT device, one or more flow transducers 5214 may be provided to the humidifier 5000.

[0451] 5.5.2.14.3 Temperature transducer 5216

[0452] The humidifier 5000 may include one or more temperature transducers 5216. One or more temperature sensors 5216 may be configured to measure one or more temperatures of an airflow downstream of, for example, a heating element 5240 or a water reservoir outlet 5122. In some forms, the humidifier 5000 may further include temperature sensors 5216 to detect the temperature of ambient air.

[0453] 5.5.2.14.4 Humidity Sensor 5218

[0454] In one embodiment, the humidifier 5000 may include one or more humidity sensors 5218 to detect the humidity of a gas, such as ambient air. The humidity sensors 5218 may be positioned in some manner toward the outlet of the humidifier 5000 to measure the humidity of the gas supplied from the humidifier 5000. The humidity sensor may be an absolute humidity sensor or a relative humidity sensor.

[0455] 5.5.2.15 Heating element 5240

[0456] In some cases, a heating element 5240 may be provided to the humidifier 5000 to provide heat input to one or more volumes of water in the water reservoir 5110 or to an airflow. The heating element 5240 may include a heating element 5242, such as a resistance heating rail. Suitable examples of the heating element 5240 are layered heating elements, such as those described in PCT patent application publication number WO2012 / 171072, the entire document of which is incorporated herein by reference.

[0457] In some configurations, the heating element 5240 may be housed in the chassis 4016, where heat may be supplied to the water reservoir 5110 primarily by conduction (e.g., via the HE cover 5241), which may be made of a conductive material (e.g., stainless steel or aluminum).

[0458] The heating element 5240 may be supported by a HE seal 5243, which is configured to prevent or block any water from entering the heating element 5240 from the water reservoir 5110 or the docking member 4130. In one form, the HE seal 5243 may seal around the periphery of the heating element 5240 and raise the heating element 5240 from the base of the RPT device 4000. The HE seal 5243 may include one or more resilient portions, such as HE cones 5245, configured to set pressure to aid in engagement of the heating element 5240 with the conductive portion 5120 of the water reservoir 5110. In one embodiment, the HE seal 5243 and the heating element 5240 can be configured such that when the water reservoir 5110 is inserted into and engaged with the docking member 4130, the HE cone 5245 is axially compressed to provide an upward force, thereby pushing the heating element 5240 toward the conductive portion 5120 of the water reservoir 5110 and improving the thermal contact between them.

[0459] The HE seal 5243 may further include one or more HE cable ports 5246 to allow cables (e.g., for power) to travel through it, for example, from another part of the chassis 4016 (such as the exterior of the docking member 4130 and near the pneumatic block 4020). One or more HE cable ports 5246 may be sealingly engaged around the periphery of the cable passing through it to prevent water from entering the heating element 5240. In one form, the HE seal 5243 may be constructed of an elastic material such as silicone and includes an integrally formed HE cone 5245 and HE cable ports 5246. The HE cable port 5246 may include a cavity for the cable to travel through it and may be configured to engage with another cavity for positioning and / or retention, such as by a protrusion shaped to be inserted into a cavity in the chassis 4016.

[0460] The humidifier 5000 may include a HE base cover 5244. The HE base cover 5244 may be removably attached to a chassis 4016 (e.g., by screws) to allow access to the heating element 5240 and includes one or more features configured to support and position the HE seal 5243. In one form, the HE base cover 5244 may further include HE cone grooves 5247 and 5246 configured to receive the HE cone 5245 while allowing its compression.

[0461] 5.5.2.15.1 Humidifier Controller 5250

[0462] According to one arrangement of the present technology, the humidifier 5000 may include, for example... Figure 5iThe humidifier controller 5250 is shown. In one form, the humidifier controller 5250 may be part of a central controller 4230. In another form, the humidifier controller 5250 may be a separate controller that can communicate with the central controller 4230.

[0463] In one embodiment, the humidifier controller 5250 may receive measurements of characteristics such as temperature, humidity, pressure, or flow rate, such as airflow, water in the water reservoir 5110, or water in the humidifier 5000, as input. The humidifier controller 5250 may also be configured to execute or implement humidifier algorithms or deliver one or more output signals.

[0464] like Figure 5i As shown, the humidifier controller may include one or more controllers, such as a central humidifier controller 5251, a heated air circuit controller 5254 configured to control the temperature of a heated air circuit, or a heating element controller 5252 configured to control the temperature of a hot plate.

[0465] 5.6 Vocabulary

[0466] For the purposes of this disclosure, one or more of the following definitions may be applied in certain forms of this technology. Alternative definitions may be applied in other forms of this technology.

[0467] 5.6.1 General

[0468] Air: In some forms of this technology, air may be considered to refer to atmospheric air, while in other forms of this technology, air may be considered to refer to some other combination of breathable gases, such as oxygen-rich atmospheric air.

[0469] Environment: In some forms of this technology, the term environment refers to (i) outside the treatment system or the patient, and (ii) directly surrounding the treatment system or the patient.

[0470] For example, the environment relative to a humidifier humidity This could be the humidity of the air immediately surrounding the humidifier, such as the humidity in the patient's bedroom. This ambient humidity can differ from the humidity outside the patient's bedroom.

[0471] In another example, environment pressure It can be pressure directly around the body or pressure outside the body.

[0472] In some forms, the environment (e.g., acoustics) noise This can be considered as the background noise level in the patient's room, rather than noise generated by, for example, the RPT device or emanating from the mask or patient interface. Ambient noise can be generated by sources outside the room.

[0473] Continuous positive airway pressure (CPAP): CPAP therapy refers to the application of a supply of air to the airway inlet at a continuously positive pressure relative to the atmosphere, and preferably at a substantially constant pressure throughout the patient's respiratory cycle. In some forms, the pressure at the airway inlet will be slightly higher during expiration and slightly lower during inspiration. In some forms, the pressure will vary between the patient's different respiratory cycles, for example, increasing in response to an indication of partial upper airway obstruction and decreasing when no indication of partial upper airway obstruction is detected.

[0474] CDMA: is an abbreviation for Code Division Multiple Access.

[0475] GSM: is an abbreviation for Global System for Mobile Communications.

[0476] LTE: an abbreviation for Long Term Evolution.

[0477] USB: is an abbreviation for Universal Serial Bus.

[0478] 5.6.2 Materials

[0479] Silicone resin or silicone elastomer: synthetic rubber. In this specification, reference to silicone resin refers to liquid silicone rubber (LSR) or molding silicone rubber (CMSR). One commercially available form of LSR is SILASTIC (included in the range of products sold under this trademark), manufactured by Dow Corning. Another manufacturer of LSR is Wacker Chemie. Unless otherwise stated, preferred forms of LSR have a Shore A (or Type A) indentation hardness in the range of about 35 to about 45, as measured using ASTM D2240.

[0480] Polycarbonate: A typical transparent thermoplastic polymer of bisphenol A carbonate.

[0481] 5.7 Other Comments

[0482] Unless the context explicitly specifies otherwise and in the case of a range of values, it should be understood that each intermediate value (one-tenth of a unit to the lower limit) between the upper and lower limits of the range, and any other stated value or intermediate value within the range, is encompassed within the technology. The upper and lower limits of these intermediate ranges may be included independently within the intermediate range and also within the scope of this technology, but are subject to any explicitly excluded boundaries within the range. Where the range includes one or both of the extreme values, the technology also includes ranges that exclude any one or both of those included extreme values.

[0483] Furthermore, where one or more values ​​are stated herein as part of the implementation of the technology, it should be understood that, unless otherwise stated, such values ​​may be approximate and may be used with any suitable significant figure to the extent that the actual implementation of the technology may allow or require.

[0484] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. While any methods and materials similar to or equivalent to those described herein may also be used in the practice or testing of this technology, a limited number of exemplary methods and materials are described herein.

[0485] When a particular material is determined to be preferred for constructing a component, obvious alternative materials with similar properties may be used as substitutes. Furthermore, unless otherwise specified, any and all components described herein should be understood as capable of being manufactured, and therefore can be manufactured together or separately.

[0486] It must be noted that, as used herein and in the appended claims, the singular forms “a / an” and “the” include their plural equivalents, unless the context clearly indicates otherwise.

[0487] All publications mentioned herein are incorporated herein by reference to disclose and describe methods, materials (or both) that are the subject of those publications. The publications discussed herein are set aside only for their disclosures prior to the filing date of this application. This document should not be construed as an admission that the present technology is not entitled to any prior disclosure due to a prior invention. Furthermore, the publication dates set aside may differ from the actual publication dates, which may require independent verification.

[0488] Furthermore, in interpreting this invention, all terms should be interpreted in the broadest and most reasonable manner consistent with the context. In particular, the term "comprises / comprising" should be interpreted as referring to an element, component, or step in a non-exclusive manner, indicating that the referenced element, component, or step may be present, used, or combined with other elements, components, or steps not expressly referenced.

[0489] The headings included in the specific embodiments are for the reader's convenience only and should not be used to limit the subject matter found throughout the invention or claims. These headings should not be used to interpret the scope of the claims or to limit their application.

[0490] Although the techniques described herein have been illustrated with reference to specific embodiments, it should be understood that these embodiments are merely illustrative of the principles and applications of the techniques. In some cases, terms and symbols may imply specific details that are not necessary for practicing the described techniques. For example, although the terms "first" and "second" may be used, they are not intended to indicate any order unless otherwise stated, but rather to distinguish different elements. Furthermore, although process steps in a method may be described or shown in sequence, such order is not required. Those skilled in the art will recognize that such order can be modified. Additionally or alternatively, aspects may be performed simultaneously or even concurrently.

[0491] Therefore, it should be understood that many modifications can be made to the illustrative embodiments and other arrangements can be designed without departing from the spirit and scope of this technology.

Claims

1. A device for humidifying a breathable gas stream, the breathable gas stream being delivered to a patient to treat a respiratory disorder, the device comprising: A water reservoir includes a base and a cover connected to the base, the base and the cover forming a chamber configured to hold a certain volume of water. The base includes a heat-conducting plate made of a thermally conductive material; A water reservoir docking fitting, configured and arranged to receive the water reservoir in an operating position. The water storage tank docking component includes a heating plate, and When the water reservoir is in the operating position, the heat-conducting plate of the base is configured to thermally engage with the heating plate of the water reservoir docking member to allow heat to be transferred from the heating plate to the volume of water in the water reservoir. A latch, movable between a locked position and an unlocked position, wherein the latch in the locked position is used to releasably lock the water reservoir to the water reservoir docking member in the operating position, and in the unlocked position is used to allow insertion of the water reservoir into and removal of the water reservoir from the water reservoir docking member. The latch is disposed on the cover of the water reservoir and is movable to engage the water reservoir docking piece in the locked position. The latch is configured to be separate from and distinct from the cover, and then fixed to the cover in the operating position or otherwise disposed on the cover. and A spring disposed between the latch and the cover of the water reservoir, wherein the spring is configured to resiliently bias the latch to the locked position, and The latch is pivotally movable relative to the cover between the locked position and the unlocked position, wherein the latch includes a button end configured to be manually pressed down to pivot the latch, and wherein the spring is disposed below the button end.

2. The device of claim 1, wherein the latch includes one or more retaining protrusions configured to engage in the locked position within a corresponding locking recess of the water reservoir docking member, and wherein the button end is configured to be manually pressed down to disengage the one or more retaining protrusions from the corresponding locking recess.

3. The device of claim 2, wherein each of the retaining protrusions includes a tapered portion along its front side.

4. The device of claim 1, wherein the latch is configured to engage the outside of the water reservoir docking part during movement to the locked position.

5. The device according to claim 1, wherein the water storage tank further comprises: An inlet pipe is arranged to receive a flow of breathable gas into the chamber; and An outlet pipe is arranged to provide an outlet for delivering a stream of humidified, breathable gas from the chamber. The outlet pipe includes a construction that is integral with the cover. The inlet pipe includes a separate and distinct structure from the cap and is subsequently attached to the top of the cap. The inlet pipe includes an inlet portion and an outlet portion. The inlet portion includes an inlet end, and the outlet portion includes an outlet end. When the inlet pipe is attached to the cover, the inlet end is disposed outside the chamber, and the outlet end is disposed inside the chamber.

6. The device of claim 5, wherein the inlet portion extends laterally to the outlet portion; The top of the cover includes an inlet seat configured to receive the inlet portion of the inlet tube; and / or The top of the cover includes an opening configured to receive an outlet portion of the inlet tube passing through it.

7. The device of claim 5, wherein the cover includes a first clip on one side of the cover and a second clip on the opposite side of the cover, and each of the first clip and the second clip is configured and arranged to releasably interlock with a corresponding protrusion disposed on the opposite side of the base in a snap-fit ​​engagement.

8. The device according to claim 1, The latch includes a retaining protrusion configured to engage in the locked position within a locking recess provided in the water reservoir docking member. Each of the retaining protrusions includes a tapered portion along its front side, and The latch is manually pressed down to pivot the latch, thereby raising the retaining protrusion to the unlocked position against bias.

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