Humidifier reservoir

Abstract

The present invention relates to humidifier reservoirs. The present invention provides a reservoir configured to hold a volume of liquid for use in a device to humidify a pressurized air stream, the reservoir comprising a base portion and a lid portion. The reservoir can be configured to improve its level of thermal contact to a heating plate with the pressurized air stream. The reservoir can be configured to improve thermal contact between the reservoir and the heating plate by pre- compression when the reservoir is engaged with the humidifier. The reservoir can comprise a removable middle portion, which can comprise an inlet tube and / or an outlet tube to improve access for cleaning. The reservoir can also be configured to prevent overfilling. The overfilling prevention feature in the reservoir can comprise a defined flow exit path and / or in the form of an air resistance.

Description

[0001] This application is a divisional application of Chinese Patent Application 201911174296.8, filed on March 14, 2014, entitled "Humidifier Storage Device". Chinese Patent Application 201911174296.8 is a divisional application of Chinese Patent Application 201710236577.6, which is a divisional application of Chinese Patent Application 201480028533.9, which entered the national phase of PCT international patent application PCT / AU2014 / 000264.

[0002] Cross-references to related applications

[0003] This application claims priority to Australian Provisional Patent Application No. 2013900901, filed on March 15, 2013; Australian Provisional Patent Application No. 2013901965, filed on May 31, 2013; Australian Provisional Patent Application No. 2013902601, filed on July 15, 2013; and Australian Provisional Patent Application No. 2013904923, filed on December 17, 2013, the entire contents of each of which are incorporated herein by reference. Technical Field

[0004] This technology relates to one or more of the detection, diagnosis, treatment, prevention, and improvement of respiratory-related diseases. In particular, this technology relates to medical devices or apparatuses, and their use. Background Technology

[0005] Human respiratory system

[0006] The body's respiratory system facilitates gas exchange. The nose and mouth form the entrances to the patient's airway.

[0007] The airways consist of a series of bronchi, which become narrower, shorter, and more numerous as they extend deeper into the lungs. The primary function of the lungs is gas exchange, allowing oxygen to move from the air into the venous blood and carbon dioxide to move out. The trachea divides into the right main bronchus and the left main bronchus, which further subdivide into terminal bronchioles. The bronchi form the airways and do not participate in gas exchange. Branches of the airways further connect to the respiratory bronchioles and eventually reach the alveoli. The alveolar region of the lungs is where gas exchange occurs and is known as the respiratory region. See Western Respiratory Physiology Essentials.

[0008] The extent of respiratory obstruction.

[0009] Obstructive sleep apnea (OSA) is a form of sleep-disordered breathing (SDB) characterized by closure or obstruction of the upper airway during sleep. OSA results from a combination of an abnormally small upper airway and the normal lack of muscle coordination in areas of the tongue, soft palate, and posterior oropharyngeal wall during sleep. This condition causes affected individuals to stop breathing during cycles typically lasting 30 to 120 seconds, sometimes 200 to 300 times per night. This often leads to excessive daytime sleepiness, and can potentially cause cardiovascular disease and brain damage. While affected individuals may not be aware of the problem, this syndrome is a common disorder, especially among middle-aged, overweight men. See U.S. Patent 4,944,310 (Sullivan).

[0010] Cheyne-Stokes respiration (CSR) is a disorder of a patient's respiratory control, characterized by rhythmic alternating cycles of increased and decreased ventilation, leading to repetitive deoxidation and reoxidation of the arterial vessels. Due to this repetitive oxygen deprivation, CSR can be harmful. In some patients, CSR is associated with repetitive sleep-wake cycles that result in severe sleep disruption, increased sympathetic activity, and increased afterload. See U.S. Patent 6,532,959 (Berthon-Jones).

[0011] Obesity hypoventilation syndrome (OHS) is defined as a combination of severe obesity and awakened chronic hypercapnia in the absence of other known causes of hypoventilation. Symptoms include shortness of breath, morning headache, and excessive daytime sleepiness.

[0012] Chronic obstructive pulmonary disease (COPD) encompasses any one of a group of lower airway diseases that share certain common characteristics. These diseases include increased resistance to airflow, prolonged expiratory phases of breathing, and loss of normal lung elasticity. Examples of COPD include emphysema and chronic bronchitis. COPD is caused by long-term smoking (a major risk factor), occupational exposure, air pollution, and genetic factors. Symptoms include: shortness of breath during exercise, chronic cough, and sputum production.

[0013] Neuromuscular diseases (NMD) are a broad term encompassing many conditions that impair muscle function directly or indirectly through intrinsic muscle pathology or neuropathology. Some NMD patients are characterized by progressive muscle damage leading to loss of mobility, wheelchair confinement, dysphagia, weakening of respiratory muscles, and ultimately death from respiratory atony. Neuromuscular failure can be categorized as rapidly progressive or slowly progressive: (i) rapidly progressive disorders: characterized by progressively worsening muscle damage over months and leading to death within years (e.g., amyotrophic lateral sclerosis (ALS) and progressive muscular dystrophy (DMD) in adolescents); (ii) variable or slowly progressive disorders: characterized by progressively worsening muscle damage over years and only moderately reducing lifespan (e.g., limb girdle, face-shoulder-arm, and myotonic dystrophy). Symptoms of respiratory atony in NMD include: increased overall weakness, dysphagia, shortness of breath during movement and at rest, fatigue, somnolence, morning headaches, poor concentration, and mood changes.

[0014] Chest wall disorders are a group of thoracic deformities that result in insufficient connection between the respiratory muscles and the pleural cavity. These disorders are typically characterized by localized defects and have the potential to lead to chronic hypercapnia-related respiratory failure. Scoliosis and / or kyphosis can also cause severe respiratory failure. Symptoms of respiratory failure include: exertional dyspnea, peripheral edema, orthopnea, recurrent chest infections, morning headache, fatigue, poor sleep quality, and loss of appetite.

[0015] In addition, healthy individuals can use this system and device to prevent respiratory problems.

[0016] 2.2.1 Treatment

[0017] Nasal continuous positive airway pressure (CPAP) therapy has been used to treat obstructive sleep apnea (OSA). The premise is that continuous positive airway pressure acts as an inflatable splint and can prevent upper airway obstruction by pushing the soft palate and tongue forward and away from the posterior oropharyngeal wall.

[0018] Noninvasive ventilation (NIV) provides ventilator support to patients through the upper airway to assist them in achieving full breathing and / or maintaining adequate oxygen levels in the body. Ventilator support is provided via a patient interface. NIV has been used to treat chronic respiratory distress syndrome (CSR), outpatient occupational disease (OHS), chronic obstructive pulmonary disease (COPD), malignant tumors (MD), and chest wall disorders.

[0019] Invasive ventilation (IV) provides ventilation support to patients who are no longer able to breathe effectively on their own and is delivered via tracheostomy.

[0020] A ventilator controls the timing and pressure of breaths pumped into a patient and monitors the patient's breathing. This control and monitoring typically includes volume-based and pressure-based methods. Volume-based methods may include, in particular, pressure-regulated volume control (PRVC), volume ventilation (VV), and volume-controlled continuous mandatory ventilation (VC-CMV) techniques. Pressure-based methods may include, in particular, assisted control (AC), synchronized intermittent mandatory ventilation (SIMV), controlled mechanical ventilation (CMV), pressure support ventilation (PSV), continuous positive airway pressure (CPAP), or positive end-expiratory pressure (PEEP) techniques.

[0021] 2.2.2 System

[0022] The treatment system may include a respiratory pressure therapy device (RPT device), an air circuit, a humidifier, a patient interface, and data management.

[0023] 2.2.3 Patient Interface

[0024] Patient interfaces can be used, for example, to interface a breathing apparatus to its user by providing an airflow. The airflow can be provided via a mask to the nose and / or mouth, or via a tracheostomy tube to the user's trachea. Depending on the treatment to be applied, the patient interface can, for example, form a seal with the patient's facial area to facilitate the delivery of air at a pressure sufficient to influence the treatment, such as a positive pressure of approximately 10 cmH2O, depending on changes in ambient pressure. For other forms of treatment, such as oxygen delivery, the patient interface may not include a seal sufficient to facilitate the delivery of air to the air supply at a positive pressure of approximately 10 cmH2O. Some masks suffer from one or more of the following: conspicuousness, unsightly appearance, high cost, poor fit, difficulty in use, and discomfort (especially when worn for extended periods or when the patient is unfamiliar with the system). Masks designed solely as part of personal protective equipment for pilots or for the administration of anesthetics may be tolerable for their initial application, but are undesirably uncomfortable for extended wear, such as during sleep or throughout the day.

[0025] 2.2.4 Respiratory Pressure Therapy (RPT) Equipment

[0026] One known RPT device for treating sleep-disordered breathing is the ResMed S9 Sleep Therapy System. Another example of a RPT device is a ventilator. Ventilators include the ResMed Stellar... TM The range of adult and pediatric ventilators can support invasive and non-invasive non-dependent ventilation for a wide range of patients to treat conditions such as, but not limited to, NMD, OHS, and COPD.

[0027] ResMedElisée TM150 ventilation machine and ResMedVSIII TM Ventilators can support invasive and non-invasive ventilation for adults or pediatric patients in a variety of situations. These ventilators offer volumetric and pressure ventilation modes with single or dual branch circuits.

[0028] RPT devices typically include a pressure generator, such as an electric motor-driven blower or a compressed gas reservoir, and are configured to supply airflow to the patient's airway. In some cases, the airflow may be supplied to the patient's airway under positive pressure. The outlet of the PRT device is connected via an air circuit to patient interfaces such as those described above.

[0029] RPT devices typically also include an inlet filter, multiple sensors, and a microprocessor-based controller. The blower may include a servo-controlled motor, a volute, and a propeller. In some cases, a brake for the motor may be implemented to more quickly reduce the blower speed to overcome the inertia of the motor and propeller. Actuation can allow the blower to achieve a low-pressure state more quickly and timely to synchronize with exhalation, regardless of inertia. In some cases, as an alternative to motor speed control, the pressure generator may also include a valve capable of venting the generated air to the atmosphere, which serves as a means of changing the pressure delivered to the patient. Sensors measure motor speed, mass flow rate, and outlet pressure, such as via pressure transducers. The controller may include data storage capabilities, with or without integrated data retrieval and display functions.

[0030] The noise output level table for existing RPT devices (measured using only one sample using the test method specifically specified in ISO 3744 in CPAP mode at 10 cmH2O).

[0031]

[0032] RPT device

[0033] 2.2.5 Humidifier

[0034] Delivering airflow to a patient's airway without humidification can cause airway dryness. Medical humidifiers can be used to increase the humidity and / or temperature of airflow in the surrounding environment where, when needed, the patient may sleep or rest (e.g., in a hospital). Therefore, medical humidifiers can be small for bedside replacement and can be configured to humidify and / or heat the airflow delivered to the patient without humidifying and / or heating the patient's surrounding environment. Room-based systems (e.g., saunas, air conditioners, evaporative coolers) can also humidify and / or heat the air inhaled by the patient; however, these systems do so by humidifying and / or heating the entire room, which can be uncomfortable for the user.

[0035] Using an RPT device and patient interface, a humidifier is employed to generate humidified air that minimizes nasal dryness and increases patient airway comfort. Except in colder climates, warm air generally applied to the patient interface and surrounding facial area is more comfortable than cold air.

[0036] Respiratory humidifiers are available in various forms and can be standalone devices connected to an RPT device via an air duct, integrated with the RPT device, or configured to be directly connected to the associated RPT device. While known passive humidifiers can provide some relief, generally, heated humidifiers can be used to provide sufficient humidity and temperature to the air, thus making the patient more comfortable. Humidifiers typically include a water reservoir or tank with a capacity of several hundred milliliters (ml), a heating element for heating the water in the reservoir, a controller that enables the adjustment of the humidification level, an air inlet for receiving air from the RPT device, and an air outlet suitable for connecting to an air circuit that delivers humidified air to the patient interface.

[0037] Heated passover humidity is a common form of humidification used with RPT (Regenerative Thermal Phosphating) devices. In this humidifier, the heating element can be incorporated into a heating plate positioned below and in thermal contact with the water tank. Heat is then transferred primarily from the heating plate to the water reservoir via conduction. An airflow from the RPT device passes over the hot water in the tank, causing the airflow to carry away water vapor. (ResMed H4i) TM and H5i TM The humidifier is an example of this heated humidifier used in conjunction with ResMed S8 and S9 CPAP devices.

[0038] Other humidifiers, such as bubble or diffuser humidifiers, jet humidifiers, or capillary humidifiers, can also be used. In bubble or diffuser humidifiers, air is conducted below the water surface, allowing the bubbles to return to the top. Jet humidifiers produce a spray of water and can use baffles or filters to remove or evaporate particles before they leave the humidifier. Capillary humidifiers utilize absorbent materials, such as sponges or paper, to absorb water through capillary action. The absorbent material is arranged within or near at least a portion of the airflow path to allow evaporation of water from the absorbent material to be incorporated into the airflow.

[0039] By using CounterStream TM ResMed HumiCare technology TM The D900 humidifier offers an alternative humidification method that directs airflow over a large surface area in a first direction while simultaneously supplying heated water to the same area in a second, opposite direction. (ResMed HumiCare) TMThe D900 humidifier can be used with some invasive and non-invasive ventilators.

[0040] Typically, the heating element is incorporated into a heating plate positioned below and in thermal contact with the water tank. Heat is then primarily transferred from the heating plate to the water reservoir via conduction. Summary of the Invention

[0041] This technology relates to providing 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.

[0042] The first aspect of this technology relates to a device for diagnosing, improving, treating or preventing respiratory disorders.

[0043] Another aspect of this technology relates to a device for treating respiratory disorders, which includes a patient interface, an air circuit, and a positive pressure air source.

[0044] Another aspect of this technology relates to methods for diagnosing, improving, treating, or preventing respiratory disorders.

[0045] One aspect of this technology relates to an apparatus for humidifying an airflow, comprising a heating plate, a chamber in fluid communication with the airflow, and a reservoir including a conductive portion thermally bonded to the heating plate, the apparatus being configured such that changing a first pressure of the airflow in the chamber alters the degree of thermal bonding between the conductive portion and the heating plate.

[0046] In one form, the storage device also includes an inlet and an outlet.

[0047] In one form, thermal bonding occurs in a first direction substantially perpendicular to the surface of the conductor portion.

[0048] 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 when the first pressure changes.

[0049] In one form, a chamber is part of a storage container.

[0050] In one form, the room also includes a submissive element.

[0051] In one embodiment, the device further includes a docking member configured to accommodate a storage container, and the docking member includes a heating plate.

[0052] In one embodiment, the docking member further includes a cavity having a top portion and a bottom portion, the bottom portion having a heating plate positioned thereon, the cavity being configured to retain at least a portion of the storage container therein.

[0053] In one form, the compliant portion is compressed to allow the reservoir to be inserted into the cavity of the mating member.

[0054] In one configuration, the top portion of the cavity is movable between an open and closed configuration to facilitate insertion of a reservoir into the cavity.

[0055] In one form, the compliant portion is configured to adjust its size when the first pressure changes to alter the degree of thermal bonding between the heating plate and the conductive portion.

[0056] In one form, the reservoir also includes a base and a lid, the base being configured to retain the volume of liquid and including conductive portions.

[0057] In one form, the base and the lid are pivotally connected together.

[0058] In one form, the compliant portion forms a seal between the base and the lid.

[0059] In one form, the reservoir also includes a latch to secure the base to the lid.

[0060] In one form, the reservoir also includes at least one handle to facilitate attachment of the reservoir to a docking device.

[0061] In one embodiment, the reservoir further includes a retaining clamp adapted to engage with a recess on the mating member to hold the reservoir within the cavity of the mating member.

[0062] In one configuration, the reservoir is designed to prevent refilling when it is connected to a docking device.

[0063] In one form, when the storage is connected to the docking device, at least a portion of the storage is prevented from opening.

[0064] In one form, the reservoir includes a refill cap.

[0065] In one embodiment, the device also includes an overflow protection element configured to prevent the reservoir from being filled to a predetermined maximum capacity of water.

[0066] In one form, the overflow protection element includes at least one hole formed in the wall of the reservoir, which defines the outflow path of water when the predetermined maximum water capacity is exceeded.

[0067] 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 the predetermined maximum water capacity is exceeded.

[0068] 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 an airflow, the method comprising altering the pressure of an airflow in the reservoir that is in fluid communication with the airflow to alter the force between the heating plate and the reservoir.

[0069] Another aspect of this technology relates to an apparatus for humidifying airflow, comprising a heating plate and a reservoir, the reservoir including an inlet for receiving airflow, an outlet for receiving airflow, and a conductive portion in thermal contact with the heating plate, wherein the apparatus is configured such that changing the pressure of the airflow in the reservoir alters the force between the heating plate and the conductive portion in the direction of thermal contact.

[0070] In one form, the device also includes a docking device that can be connected to a storage device.

[0071] In one configuration, the mating element is designed to restrict the opening of the reservoir in the thermal contact direction.

[0072] Another aspect of this technology relates to a reservoir configured to contain a volume of liquid for humidifying and pressurizing an airflow, comprising a base portion having a conductive portion, a cover portion including an inlet and an outlet, and a compliant portion, wherein the base portion and the cover portion are pivotally engaged and configured to be in an open configuration and a closed configuration when pivotally engaged, and when the reservoir is in the closed configuration, a seal sealably engages the base portion and the cover portion.

[0073] In one form, the compliant portion includes an outlet pipe and a baffle configured to connect to the inlet pipe.

[0074] Another aspect of this technology relates to a device for humidifying airflow, comprising a heating plate and a reservoir, the reservoir including an inlet, an outlet, a compliant portion, and a conductive portion in thermal contact with the heating plate, wherein the device is configured such that changing the height of the compliant portion alters the level of thermal bonding between the conductive portion and the heating plate.

[0075] In one form, the device is configured such that thermal bonding occurs in a first direction substantially perpendicular to the surface of the conductor portion.

[0076] Another aspect of this technology relates to a method for changing the level of thermal bonding in a humidifier device, the method comprising (i) thermally bonding a heating plate to a conductive portion of a reservoir; and (ii) changing the height of a compliant portion of the reservoir to change the level of thermal bonding between the conductive portion and the heating plate.

[0077] Another aspect of this technology relates to a water reservoir for a device for humidifying airflow, comprising a base portion configured to maintain a predetermined maximum capacity of water, the base portion including an overflow protection element configured and arranged to prevent the base portion from being filled to more than the maximum capacity of water.

[0078] In one form, the reservoir also includes a lid portion that is movably connected to the base portion to allow the reservoir to switch between an open configuration and a closed configuration.

[0079] In one embodiment, the overflow protection element is constructed and arranged to prevent the base portion from being filled above the maximum capacity of water when the water reservoir is in an open and / or closed configuration.

[0080] In one form, the reservoir also includes a compliant portion configured to sealably engage the cover portion and the base portion when the reservoir is in a closed configuration.

[0081] In one form, the compliant portion is configured as a barrier or seal to prevent fluid from communicating between the inside and outside of the reservoir.

[0082] In one form, 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 capacity will overflow through the overflow protection element.

[0083] In one form, the overflow protection element includes at least one orifice that defines the outflow path of water when the maximum capacity of water is exceeded.

[0084] In one form, the overflow protection element is configured such that when the maximum capacity of the water is exceeded, water overflows only through at least one hole.

[0085] In one form, at least one hole is provided at one or more locations along the periphery of the base portion.

[0086] In one form, at least one hole is provided by an upper lip or flange disposed along the periphery of the base portion.

[0087] In one form, at least one orifice includes one or more perforations, holes, slits, or slots that allow fluid communication to the interior and exterior of the water reservoir.

[0088] In one form, the reservoir also includes a compliant portion configured to sealably engage the base portion when the reservoir is in a closed configuration, wherein the compliant portion is configured to block or seal at least one orifice to prevent fluid communication between the interior and exterior of the reservoir.

[0089] In one form, the compliant portion engages with the base on the outside of at least one hole.

[0090] In one form, the overflow protection element includes an inclined profile in the side profile of the base portion, the inclined profile defining the outflow path of water when the maximum capacity of water is exceeded.

[0091] In one form, the sloping profile extends in one or more directions.

[0092] In one form, the overflow protection element is constructed such that when the maximum capacity of the water is exceeded, water overflows only through the inclined profile.

[0093] In one form, the reservoir also includes a compliant portion configured to seal against the base portion when the reservoir is in a closed configuration, wherein the compliant portion is configured to block or seal the inclined profile to prevent fluid communication between the interior and exterior of the reservoir.

[0094] In one form, the compliant portion seals against the base at the outer edge of the sloping profile.

[0095] In one form, the overflow protection element is constructed and arranged to prevent the base portion from being filled to more than the maximum capacity of water when the reservoir is in the open configuration.

[0096] In one form, the overflow protection element is constructed and arranged to prevent the base portion from being filled above the maximum capacity of water when the reservoir is in a closed configuration.

[0097] In one form, the overflow protection element forms one or more airlocks to prevent further water intrusion into the base portion when the maximum water capacity is reached.

[0098] In one form, the reservoir also includes a lid portion that is movably connected to the base portion to allow the reservoir to switch between an open configuration and a closed configuration.

[0099] In one configuration, the overflow protection element is constructed and arranged to form one or more airlocks when the reservoir is in a closed configuration.

[0100] In one embodiment, the water reservoir also includes an inlet pipe and an outlet pipe connected to the base portion, which are arranged such that when the maximum water capacity is reached, air in the reservoir is prevented from leaking out through the inlet pipe and the outlet pipe, thereby preventing water from further entering the base portion.

[0101] Another aspect of this technology relates to a device for humidifying airflow, which includes a water reservoir docking part and the water reservoir is disposed to the water reservoir docking part substantially as described above.

[0102] In one form, the water reservoir docking fitting forms a cavity for accommodating the water reservoir.

[0103] In one form, the water reservoir connection includes a heating plate adapted for thermal bonding to the conductive portion of the water reservoir.

[0104] Another aspect of the technology relates to a method for preventing overflow in a humidifier reservoir, the method comprising (i) incorporating an overflow protection element in a base portion of the humidifier reservoir; and (ii) configuring the overflow protection element such that when a predetermined maximum water capacity is exceeded and the base portion is in its normal operating orientation, excess water exceeding the maximum water capacity will overflow via the overflow protection element.

[0105] In one form, the overflow protection element includes at least one hole.

[0106] In one form, the overflow protection element includes a slanted profile.

[0107] In one form, a method to prevent overflow in the humidifier reservoir also includes constructing an overflow protection element such that when the maximum capacity of the water is exceeded, water overflows only through the overflow protection element.

[0108] Another aspect of this technology relates to a water reservoir configured to hold a predetermined maximum capacity of water, comprising: a plurality of walls forming a cavity configured to hold a predetermined maximum capacity of water; an inlet pipe configured to supply air into the cavity, the inlet pipe having an inner inlet end and an outer inlet end; and an outlet pipe configured to supply humidifying air 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 positioned within the cavity and the outer inlet end and the outer outlet end are positioned within 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 approximately 90° to a normal operating orientation, the first axis at a first angle positions the inner inlet end and the outer inlet end at different heights, such that the predetermined maximum capacity of water is less than at least one of the inner inlet end or the outer inlet end to prevent water from overflowing through the inlet pipe.

[0109] In one embodiment, the reservoir is further configured such that when the reservoir is tilted at approximately 90° to its normal operating orientation, the second axis at a second angle positions the inner end of the outlet and the outer end of the outlet at different heights, such that the predetermined maximum capacity of water is less than at least one of the inner end of the outlet or the outer end of the outlet and prevents water from overflowing through the outlet pipe.

[0110] Of course, parts of these aspects can form sub-aspects of this technology. Furthermore, multiple sub-aspects and / or aspects can be combined in various ways and also constitute other aspects or sub-aspects of this technology.

[0111] Other features of the present technology will become apparent from the information contained in the following detailed description, abstract, drawings and claims. Attached Figure Description

[0112] The technology is illustrated by way of example rather than limitation, and in the accompanying drawings, similar reference numerals refer to similar elements, including:

[0113] 4.1 Treatment System

[0114] Figure 1a A system is shown comprising a patient 1000 wearing 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.

[0115] Figure 1b A system is shown comprising a patient 1000 wearing a patient interface 3000 in the form of an RPT device 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.

[0116] Figure 1c A system is shown for a patient 1000 including a patient interface 3000 in the form of a full-face mask with an RPT device, which receives a positive pressure air supply from the RPT device. The air from the RPT device is humidified in a humidifier 5000 and delivered to the patient 1000 along an air circuit 4170.

[0117] 4.2 Therapy

[0118] 4.2.1 Respiratory System

[0119] Figure 2a It shows an overview of the human respiratory system, including the nasal cavity and oral cavity, larynx, vocal folds, esophagus, trachea, bronchi, lungs, alveolar sacs, heart, and diaphragm.

[0120] Figure 2b It shows a view of the human upper airway, including the nasal cavity, nasal bones, lateral nasal cartilage, greater alar cartilage, nostrils, upper lip, lower lip, larynx, hard palate, soft palate, oropharynx, tongue, epiglottis, vocal folds, esophagus, and trachea.

[0121] 4.3 Patient Interface

[0122] Figure 3a One form of patient interface according to this technology is shown.

[0123] 4.4 Breathing apparatus

[0124] Figure 4a An RPT device of one form according to the present technology is shown.

[0125] Figure 4b A schematic diagram of the pneumatic circuit of one form of RPT device according to the present technology is shown. The upstream and downstream directions are indicated.

[0126] Figure 4c A schematic diagram of the electrical components of an RPT device according to one aspect of the present technology is shown.

[0127] Figure 4d A schematic diagram of an algorithm implemented in an RPT device according to one aspect of the present technology is shown. In this figure, arrows with solid lines indicate the actual flow of information, for example, via electrical signals.

[0128] Figure 4e This illustrates one aspect of the technology by Figure 4d The flowchart shows the method for implementing the treatment actuator.

[0129] 4.5 Humidifier

[0130] Figure 5a A simplified representation of a humidifier connected to a pressure generator 4140 via an air circuit 4170 is shown.

[0131] Figure 5b A schematic diagram of a humidifier is shown.

[0132] 4.6 Respiratory waveform

[0133] Figure 6a The diagram shows a typical respiratory waveform used in a model of a sleeping person. The horizontal axis represents time, and the vertical axis represents respiratory flow. Although parameter values ​​can vary, typical breathing can have the following approximations: tidal volume Vt, 0.5 L; inspiratory time Ti, 1.6 seconds; peak inspiratory flow rate Qpeak, 0.4 L / s; expiratory time Te, 2.4 seconds; peak expiratory flow rate Qpeak, -0.5 L / s. The total duration of breathing, Ttot, is approximately 4 seconds. People typically breathe at a rate of approximately 15 breaths per minute (BPM), with a ventilation rate of approximately 7.5 L / min. In a typical work cycle, the ratio of Ti to Ttot is approximately 40%.

[0134] 4.7 RPT device with humidifier

[0135] Figure 7 shows a prior art example of RPT device 4000 and humidifier 5000.

[0136] Figure 8 An example of an RPT device 4000 and an integrated humidifier 5000 according to the present technology is shown.

[0137] Figures 9 to 12 Several views of a humidifier reservoir 5110 according to an example of the present technology are shown, wherein Figures 9 to 10 The humidifier reservoir 5110 is shown in a "closed" configuration. Figure 11 The humidifier reservoir 5110 is shown in an "open" configuration and Figure 12 This is an exploded view of the humidifier storage unit 5110.

[0138] Figures 13 to 16 The humidifier 5000 is shown from multiple perspectives, demonstrating the engagement of the humidifier reservoir 5110 with the reservoir docking member 5130 and / or the engagement of the humidifier 5000 with the air circuit 4170 according to an example of the present technology.

[0139] Figures 17a to 17c , Figures 18a to 18c ,as well as Figures 19a to 19c An example of this technology is shown when air passes through inlet 5118 ( Figures 17a to 17c ) enters the humidifier storage 5110 and crosses through the humidifier storage 5110 ( Figures 18a to 18c The interior of ) will then be accessed via exit 5122 ( Figures 19a to 19c A time-lapse graph of an exemplary airflow path as it leaves.

[0140] Figures 20-21 An exemplary distribution of pressure / force in a humidifier reservoir 5110 of various configurations according to an example of the present technology is shown.

[0141] Figures 22 to 29 Various configurations of the reservoir cover 5114 according to examples of the present technology are shown, particularly variations in the configurations of the inlet pipe 5124 and the outlet pipe 5126.

[0142] Figure 30a and Figure 30b A humidifier reservoir 5110 according to an example of the present technology is shown, and in particular, a hole 5138.

[0143] Figure 30c and Figure 30d A humidifier reservoir 5112 according to an example of the present technology is shown, and in particular a slanted profile 5139.

[0144] Figure 31a A humidifier reservoir 5110 according to an example of the present technology is shown, and in particular, a hole 5138.

[0145] Figure 31b A humidifier reservoir 5110 according to an example of the present technology is shown, and in particular a slanted profile 5139.

[0146] Figures 32 to 33The humidifier docking member 5130 and humidifier reservoir 5110 according to an example of the present technology are shown, and in particular the interaction between the cover retaining protrusion 5142 and the docking member locking recess 5144 is shown.

[0147] Figure 34 A humidifier reservoir 5110 according to another example of the present technology is shown, wherein it is configured to have a refill cover 5180 and the base, top and compliant portion can be mounted together.

[0148] Figures 35 to 38 Further representations of a humidifier reservoir 5110 according to an example of the present technology are shown, particularly with respect to the arrangement of the inlet pipe 5124 and the outlet pipe 5126.

[0149] Figure 39 A cross-sectional view of a reservoir cover 5114 and a compliant portion 5116 according to an example of the present technology is shown.

[0150] Figure 40 An example of a humidifier reservoir 5110 according to another embodiment of the present technology is shown, wherein it is configured to have a latch 5186.

[0151] Figure 41a , Figure 41b ,and Figure 42 A humidifier reservoir 5110 according to another embodiment of the present technology is shown. In this configuration, the reservoir 5110 includes a reservoir cover 5114 having an inlet pipe 5124, a base portion 5112 (as shown in...) Figure 42 (As shown in the exploded view) and the intermediate portion 5202 including the outlet pipe 5126.

[0152] Figure 43a and Figure 43b The middle portion 5202 of the reservoir 5110 from multiple angles is shown as an example of the present technology. In particular, they are intended to show the baffle 5192, the outlet pipe 5126, and the support spokes 5194.

[0153] Figure 44 A perspective bottom view of the middle portion 5202 of a storage 5110 according to an example of the present technology is shown.

[0154] Figure 45a and Figure 45b A cross-section of the connected reservoir lid 5114 and the middle portion 5202 is shown, and Figure 45c The illustration shows an example of the present technology. Figure 45a and Figure 45b The cross-section of the reservoir lid 5114 is shown in the figure. Figure 45bThe cross-section of the baffle 5192 is shown in more detail, especially 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.

[0155] Figure 46 The upper part of a humidifier reservoir 5110 according to another embodiment 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, which includes an outlet pipe 5126, an inlet pipe 5124, and a wall portion 5206.

[0156] Figure 47a and Figure 47b A portion of a humidifier reservoir 5110 according to another example of the present technology is shown. Figure 47a and Figure 47b A reservoir cover 5114 connected to the intermediate portion 5202 is shown, and in particular, they are intended to show an inlet pipe 5124, an outlet pipe 5126, a deflector portion 5198, and a flow guide 5195.

[0157] Figure 48a and Figure 48b The intermediate portion 5202 of another embodiment according to the present technology is shown, and in particular, they are intended to show the deflector portion 5198, the flow guide 5195, the positioning portion 5196 and the compliant portion 5116.

[0158] Figure 49 A portion of a humidifier reservoir 5110 according to another embodiment of the present technology is shown. Specifically, Figure 49 A water level 5184 is shown, at which an airlock is formed to prevent further liquid from entering the reservoir 5110 when the reservoir 5110 has a predetermined maximum capacity of liquid.

[0159] Figure 50a , Figure 50b , Figure 51a and Figure 51b Several views of a humidifier reservoir 5110 according to an example of the present technology are shown, wherein, Figure 50a , Figure 50b and Figure 51a The humidifier reservoir 5110 is shown in a "closed" configuration, and Figure 51b The humidifier storage unit 5110 is shown in an "open" configuration.

[0160] Figure 52a and Figure 52b Several views of a humidifier storage unit 5110 according to an example of the present technology are shown. Figure 52aA plan view of the humidifier reservoir 5110 in its "open configuration" is shown, indicating that... Figure 52b The cross-section shown in the figure, and Figure 52b The passage is shown with the cross-section visible. Figure 52a The cross-section of the storage device 5110 of line 52b-52b.

[0161] Figure 53 and Figure 54 Several views of a memory base 5112 according to an example of the present technology are shown.

[0162] Figure 55a and Figure 55b A foldable tube 5208 according to an example of the present technology is shown. Figure 55a The foldable tube 5208 in its "open" configuration is shown, and Figure 55b The foldable tube 5208 in a “closed” configuration is shown.

[0163] Figure 56 A humidifier reservoir cover 5114 according to an example of the present technology is shown, wherein the inlet pipe 5124 of the reservoir cover 5114 includes a flexible portion 5210 and a rigid portion 5212.

[0164] Figure 57a A side view of a humidifier reservoir 5110 (only the base 5112 is shown) according to an example of the present technology is illustrated, indicating that in Figure 57b The cross section 57b-57b shown above.

[0165] Figure 57b A perspective view of the humidifier reservoir 5110 (only the base 5112 is shown) is presented, illustrating as shown in... Figure 57a The cross-section indicated above. Specifically, Figure 57b Hole 5138 is shown with water-fill indicator mark 5140.

[0166] Figure 58a A top view of a humidifier reservoir 5110 according to an example of the present technology is shown, indicating that in Figure 58b The cross section 58b-58b shown above.

[0167] Figure 58b A side view of the humidifier reservoir 5110 is shown, illustrating its position as described above. Figure 58a The cross-section indicated above. Specifically, Figure 58b The diagram shows the orifice 5138, the water level 5141_1 at the predetermined maximum capacity of water, and the water level 5141_2 at the threshold volume of water.

[0168] Figure 59An exploded perspective view of an RPT device 4000, an integrated humidifier 5000, and a humidifier end cap 5300 according to an example of the present technology is shown.

[0169] Figure 60 A perspective view of a humidifier end cap 5300 according to an example of the present technology is shown. Detailed Implementation

[0170] Before describing this technology in more detail, it is important to understand that the technology is not limited to the specific instances described herein and is subject to variation. It should also be understood that the terminology used in this disclosure is for illustrative purposes only and is not intended to be limiting.

[0171] The descriptions provided below refer to several instances that may share common characteristics and features. It should be understood that one or more features of any instance can be combined with one or more features of other instances. Furthermore, any single feature or combination of features in any instance can constitute another instance.

[0172] 5.1 Treatment System

[0173] In one form, the technology includes a device for treating respiratory disorders, such as an RPT device. This device or apparatus may include a pressure generator or blower to supply airflow to the patient 1000 via an air circuit directed to the patient interface 3000.

[0174] 5.2 Therapy

[0175] In one form, the technology includes a method for treating respiratory distress, the method comprising the step of applying positive pressure to the inlet of the patient's airway.

[0176] 5.2.1 Nasal CPAP for OSA

[0177] In one form, the technology includes a method for treating a patient’s obstructive sleep apnea by applying continuous positive airway pressure to the patient’s nose.

[0178] In some instances of this technique, positive pressure air is supplied to the patient's nasal passages through one or both nostrils.

[0179] 5.3 Patient Interface 3000

[0180] According to one aspect of the present technology, a non-invasive patient interface 3000 includes the following functional aspects: a seal-forming structure 3100, a pressurization chamber 3200, a positioning and stabilizing structure 3300, and a connection port 3600 for connection to an air circuit 4170. 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 seal-forming structure 3100 is arranged around an inlet to the patient's airway to facilitate the supply of air to the airway at positive pressure.

[0181] 5.4 Breathing apparatus

[0182] exist Figure 4a The diagram illustrates an RPT device 4000 according to one aspect of the present technology, which includes mechanical and pneumatic components 4100, electronic components 4200, and is programmed to execute one or more algorithms 4300. This RPT device may include an outer housing 4010, which may be formed in two parts: an upper portion 4012 and a lower portion 4014. Furthermore, the outer housing 4010 may include one or more panels 4015. The RPT device 4000 may include a chassis 4016 supporting one or more internal components of the RPT device 4000. In one embodiment, a pneumatic block 4020 is supported by or formed as part of the chassis 4016. The RPT device 4000 may include a handle 4018.

[0183] exist Figure 4b The diagram shows a schematic of the pneumatic circuit of an RPT device 4000 according to an example of the present technology. The pneumatic path of the RPT device 4000 may include an inlet air filter 4112, an inlet silencer 4122, a pressure generator 4140 (preferably a blower 4142) capable of providing air at positive pressure, a pneumatic block 4020, and an outlet silencer 4124. One or more transducers 4270, such as a pressure sensor 4272 and a flow sensor 4274, may be included in the pneumatic path.

[0184] The pneumatic block 4020 may include a portion of the pneumatic path located within the outer housing 4010 and may accommodate the pressure generator 4140.

[0185] The RPT device 4000 may include a power supply 4210, one or more input devices 4220, a central controller 4230, a treatment device controller 4240, a pressure generator 4140, one or more protection circuits 4250, a memory 4260, a converter 4270, a data communication interface 4280, and one or more output devices 4290. Electrical components 4200 may be mounted on a single printed circuit board assembly (PCBA) 4202. Alternatively, the RPT device 4000 may include more than one PCBA 4202.

[0186] Figure 7 illustrates a prior art embodiment of an RPT device 4000 that can be connected to a humidifier 5000. The RPT device can also be integrated with the humidifier 5000 such that an outer housing 4010 encapsulates components that perform the equivalent functions of the RPT device 4000 and components that perform the equivalent functions of the humidifier 5000.

[0187] Figure 8 An embodiment of this integrated device, including an RPT device 4000 and a humidifier 5000, according to an example of the present technology is shown. It should be understood that subsequent references to the humidifier 5000 refer to the integrated device, and in particular to components that perform the equivalent functions of the humidifier 5000.

[0188] 5.4.1 Mechanical & Pneumatic Components of the RPT Device 4100

[0189] 5.4.1.1 Air filter 4110

[0190] One form of RPT device according to the present technology may include one or more air filters 4110.

[0191] In one configuration, the inlet air filter 4112 is positioned at the beginning of the pneumatic path of the blower 4142. See also Figure 4b .

[0192] In one configuration, an outlet air filter 4114, such as an antibacterial filter, is positioned between the outlet of the pneumatic block 4020 and the patient interface 3000. See also Figure 4b .

[0193] 5.4.1.2 Muffler 4120

[0194] In one embodiment of this technology, the inlet silencer 4122 is positioned upstream of the pneumatic path of the blower 4142. See also Figure 4b .

[0195] In one embodiment of this technology, the outlet silencer 4142 is positioned in the pneumatic path between the blower 4142 and the patient interface 3000. See also Figure 4b .

[0196] 5.4.1.3 Pressure Generator 4140

[0197] In a preferred embodiment of this technology, the pressure generator 4140 for generating a positive pressure airflow is a blower 4142. For example, the blower may include a brushless DC motor 4144 having one or more propellers housed in a volute. The blower 4142 may preferably be capable of delivering an air supply at a positive pressure ranging from about 4 cmH2O to about 20 cmH2O, or in other forms up to about 30 cmH2O, for example up to about 120 liters per minute. Examples of suitable blowers may include those described in any of the following patents or patent applications, the contents of which are incorporated herein by reference in their entirety: U.S. Patent No. 7,866,944; U.S. Patent No. 8,638,014; U.S. Patent No. 8,636,479; and PCT Patent Application Publication No. WO2013 / 020167.

[0198] The pressure generator 4140 is controlled by the treatment device controller 4240.

[0199] In other forms, the pressure generator 4140 may be a piston-driven pump, a pressure regulator connected to a high-pressure source (e.g., a compressed air reservoir), or a bellows.

[0200] 5.4.1.4 Converter 4270

[0201] The transducer can be located inside or outside the RPT device. An external transducer can be positioned, for example, on or within the air circuit, such as a patient interface. An external transducer can also be in the form of a non-contact sensor, such as a Doppler radar motion sensor, that sends or transmits data to the RPT device.

[0202] In one form of this technology, one or more transducers 4270 are located in a pneumatic path, such as upstream and / or downstream of a pressure generator 4140. The one or more transducers 4270 are configured and arranged to measure characteristics such as velocity, pressure, temperature, or humidity of the airflow at that point in the pneumatic path.

[0203] In one form of this technology, one or more transducers 4270 are located near the patient interface 3000, such as in the air circuit 4170.

[0204] In another form of this technology, one or more transducers 4270 may be arranged to measure the characteristics of the surrounding air.

[0205] In one form, signals from converter 4270 can be filtered, for example, by low-pass, high-pass, and bandpass filters.

[0206] 5.4.1.4.1 Flow converter 4274

[0207] The flow converter 4274 according to this technology can be based on a differential pressure converter, such as the SDP600 series differential pressure converter from SENSIRION.

[0208] In one configuration, a signal representing the total flow rate Qt, such as that from the flow converter 4274, is received by a central controller 4230.

[0209] 5.4.1.4.2 Pressure transducer 4272

[0210] According to this technology, the pressure transducer 4272 is positioned for fluid communication with the pneumatic path. An example of a suitable pressure transducer is a sensor from the HONEYWELL ASDX series. Alternatively, a suitable pressure transducer is a sensor from the GENERALELECTRIC NPA series.

[0211] In one configuration, a signal from a pressure transducer 4272 is received via a central controller 4230.

[0212] 5.4.1.4.3 Motor speed converter 4276

[0213] In one form of this technology, a motor speed converter 4276 is used to determine the rotational rate of the motor 4144 and / or the blower 4142. The motor speed signal from the motor speed converter 4276 is preferably provided to the treatment device controller 4240. The motor speed converter 4276 can be, for example, a speed sensor, such as a Hall effect sensor.

[0214] 5.4.1.5 Anti-backflow valve 4160

[0215] In one embodiment of this technology, an anti-backflow valve is positioned between the humidifier 5000 and the pneumatic block 4020. The anti-backflow valve is constructed and arranged to reduce the risk of water flowing upstream from the humidifier 5000, for example, to the motor 4144.

[0216] 5.4.1.6 Air Circuit 4170

[0217] According to an aspect of the present technology, the air circuit 4170 is a conduit or tube constructed and arranged to allow airflow to travel between two components, such as the pneumatic block 4020 and the patient interface 3000, during use.

[0218] Specifically, the air circuit 4170 can be fluidly connected to the outlet of the pneumatic block and the patient interface. The air circuit may be referred to as an air delivery tube. In some cases, the circuit may have separate branches for inhalation and exhalation. In other cases, a single branch is used.

[0219] 5.4.1.7 Supplement oxygen 4180

[0220] In one form of this technology, supplemental oxygen 4180 is delivered to one or more points in the pneumatic path, such as upstream of pneumatic block 4020, to air circuit 4170, and / or to patient interface 3000.

[0221] 5.4.1.7.1 Power Supply 4210

[0222] The power supply (or PSU) 4210 can be located inside or outside the outer housing 4010 of the RPT device 4000.

[0223] In one embodiment of this technology, power supply 4210 provides electrical power only to RPT device 4000. In another embodiment of this technology, power supply 4210 provides electrical power to both RPT device 4000 and humidifier 5000.

[0224] 5.4.1.7.2 Input Device 4220

[0225] In one form of this technology, the RPT device 4000 includes one or more input devices 4220 in the form of buttons, switches, or dials to allow human interaction with the device. The buttons, switches, or dials can be physical devices or software devices readable via a touchscreen. In one form, the buttons, switches, or dials can be physically connected to an external housing 4010, or in another form, they can be wirelessly connected to a receiver electrically connected to a central controller 4230.

[0226] In one form, the input device 4220 may be constructed and arranged to allow a person to select values ​​and / or menu selections.

[0227] 5.4.1.7.3 Central Controller 4230

[0228] In one form of this technology, the central controller 4230 is one or more processors adapted to control the RPT device 4000.

[0229] Suitable processors may include x86 Intel processors based on ARM Cortex-M processors from ARM Holdings, such as the STM32 series microprocessors from ST Microelectronics. In some alternative forms of this technology, a 32-bit RISC CPU such as the STR9 series microcontrollers from ST Microelectronics, or a 16-bit RISC CPU manufactured by Texas Instruments, such as the MSP430 family of microcontrollers, may also be suitable.

[0230] In one form of this technology, the central processing unit 4230 is a dedicated circuit.

[0231] In one form, the central controller 4230 is an application-specific integrated circuit (ASIC). In another form, the central controller 4230 includes discrete electronic components.

[0232] The central controller 4230 may be configured to receive input signals from one or more converters 4270 and one or more input devices 4220.

[0233] The central controller 4230 may be configured to provide output signals to one or more of the output device 4290, the therapeutic device controller 4240, the data communication interface 4280, and the humidifier controller 5250.

[0234] In some forms of this technology, the central controller 4230 is configured to implement one or more methods described herein, such as one or more algorithms 4300. In some forms of this technology, the central controller 4230 may be integrated with the RPT device 4000. However, in some forms of this technology, without directly controlling the delivery of respiratory treatment, the central controller 4230 may be implemented discretely from the flow-generating component of the RPT device 4000, such as for the purpose of performing any of the methods described herein. For example, the central controller 4230 may perform any of the methods described herein for the purpose of determining control settings for ventilator or other respiratory-related events by analyzing stored data such as from any of the transducers 4270 described herein.

[0235] 5.4.1.7.4 Timer 4232

[0236] Preferably, the RPT device 4000 includes a timer 4232 connected to the central controller 4230.

[0237] 5.4.1.7.5 Treatment Equipment Controller 4240

[0238] In one form of this technology, the treatment device controller 4240 is a control module 4330 that forms part of an algorithm 4300 executed by a central controller 4230.

[0239] In one embodiment of this technology, the treatment device controller 4240 is a dedicated motor control integrated circuit. For example, in one embodiment, an MC33035 brushless DC motor controller manufactured by ONSEMI is used.

[0240] 5.4.1.7.6 Protection circuit 4250

[0241] One or more protection circuits 4250 according to this technology may include electrical protection circuits, temperature and / or pressure safety circuits.

[0242] 5.4.1.7.7 Memory 4260

[0243] According to one embodiment of the present technology, the RPT device 4000 includes a memory 4260, preferably a non-volatile memory. In some embodiments, the memory 4260 may include battery-driven static random access memory. In some embodiments, the memory 4260 may include volatile random access memory.

[0244] Preferably, the memory 4260 is located on PCBA 4202. The memory 4260 can be in the form of EEPROM or NAND flash memory.

[0245] Alternatively or alternatively, the RPT device 4000 includes a removable memory 4260, such as a memory card made according to the Secure Digital (SD) standard.

[0246] In one form of this technology, memory 4260 serves as a permanent computer-readable storage medium on which computer programming instructions, such as one or more algorithms 4300, expressing one or more methods described herein are stored.

[0247] 5.4.1.8 Data Communication System 4280

[0248] In a preferred embodiment of this technology, a data communication interface 4280 is provided, and this data communication interface 4280 is connected to a central controller 4230. The data communication interface 4280 is preferably connected to a remote external communication network 4282 and / or a local external communication network 4284. Preferably, the remote external communication network 4282 is connected to a remote external device 4286. Preferably, the local external communication network 4284 is connected to a local external device 4288.

[0249] In one embodiment, the data communication interface 4280 is part of the central controller 4230. In another embodiment, the data communication interface 4280 is separate from the central controller 4230 and may include an integrated circuit or a processor.

[0250] In one form, the remote external communication network 4282 is the Internet. The data communication interface 4280 can connect to the Internet using wired communication (e.g., via Ethernet or fiber optic) or wireless protocols (e.g., CDMA, GSM, LTE).

[0251] In one form, the local external communication network 4284 utilizes one or more communication standards such as Bluetooth or consumer infrared protocols.

[0252] In one form, the remote external device 4286 is one or more computers, such as a networked computer cluster. In another form, the remote external device 4286 may be a virtual computer rather than a physical computer. In either case, this remote external device 4286 may be accessible to a properly authorized person, such as a physician.

[0253] Preferably, the local external device 4288 is a personal computer, mobile phone, tablet computer, or remote controller.

[0254] 5.4.1.9 Output devices 4290 (including selective displays and alarms)

[0255] The illustrated device 4290 according to this technology can take the form of one or more visual, auditory, and tactile units. The visual display can be a liquid crystal display (LCD) or a light-emitting diode (LED) display.

[0256] 5.4.1.9.1 Display Driver 4292

[0257] Display driver 4292 receives characters, symbols, or images as input intended for display on monitor 4294, and converts them into commands that cause monitor 4294 to display those characters, symbols, or images.

[0258] 5.4.1.9.2 Monitor 4294

[0259] The display 4294 is configured to visually display characters, symbols, or images according to commands received from the display driver 4292. For example, the display 4294 may be an eight-segment display, in which case the display driver 4292 converts each character or symbol, such as the number "0", to eight logic signals to indicate whether eight corresponding segments are actuated to display a specific character or symbol.

[0260] 5.4.2 RPT device algorithm 4300

[0261] 5.4.2.1 Preprocessing Module 4310

[0262] According to one form of the present technology, a preprocessing module 4310 receives a signal from a converter 4270 as input, such as a flow converter 4274 or a pressure converter 4272, and preferably performs one or more processing steps to calculate one or more output values ​​that will be used as input to another module, such as a therapeutic actuator module 4320.

[0263] In one form of this technology, the output values ​​include patient interface or mask pressure Pm, respiratory flow rate Qr, and unintentional leakage flow rate Ql.

[0264] In various forms of this technology, the preprocessing module 4310 includes one or more of the following algorithms: pressure compensation algorithm 4312, ventilation flow rate algorithm 4314 (e.g., intentional leakage), leakage flow rate algorithm 4316 (e.g., unintentional leakage), and respiratory flow rate algorithm 4318.

[0265] 5.4.2.1.1 Pressure Compensation 4312

[0266] In one embodiment of this technology, the pressure compensation algorithm 4312 receives as input the pressure in the pneumatic path indicating the outlet of the adjacent pneumatic block. The pressure compensation algorithm 4312 estimates the pressure drop through the air circuit 4170 and provides an estimated pressure Pm in the patient interface 3000 as an output.

[0267] 5.4.2.1.2 Ventilation flow rate 4314

[0268] In one form of this technology, the ventilation flow calculation algorithm 4314 receives the estimated pressure Pm in the patient interface 3000 as input and estimates the ventilation air flow Qv from the ventilation port 3400 in the patient interface 3000.

[0269] 5.4.2.1.2 Leakage flow rate: 4316

[0270] In one form of this technology, the leakage flow algorithm 4316 receives the total flow rate Qt and the ventilation flow rate Qv as inputs, and provides an estimate of unintentional leakage as output, namely leakage flow rate Ql, by calculating the average value of Qt-Qv over a sufficiently long period, including several breathing cycles (e.g., about 10 seconds).

[0271] In one form, the leakage flow algorithm 4316 receives the total flow rate Qt, ventilation flow rate Qv, and estimated pressure Pm from the patient interface 3000 as inputs, and provides a leakage flow rate Ql as output by calculating the leakage conductance and determining the leakage flow rate Ql as a function of the leakage conductance and pressure Pm. Preferably, the leakage conductance is calculated as the quotient of the low-pass filtration non-ventilation flow rate QtQv and the square root of the low-pass filtration pressure Pm, wherein the low-pass filtration time constant has a value long enough to encompass several respiratory cycles, for example, approximately 10 seconds.

[0272] 5.4.2.1.4 Respiratory flow rate 4318

[0273] In one form of this technology, the respiratory flow algorithm 4318 receives total flow rate Qt, ventilatory flow rate Qv, and leakage flow rate Ql as inputs, and estimates the patient's airflow rate Qr by subtracting the ventilatory flow rate Qv and leakage flow rate Ql from the total flow rate Qt.

[0274] 5.4.2.2 Treatment Actuator Module 4320

[0275] In one form of this technology, the treatment actuator module 4320 receives one or more pressures Pm and airflow rate Qr to the patient in the patient interface 3000 as inputs, and provides one or more treatment parameters as outputs.

[0276] In one form of this technique, the treatment parameter is the CPAP treatment pressure Pt.

[0277] In one form of this technique, the treatment parameters are one or more of the levels of pressure support and target ventilation.

[0278] In various forms of this technology, the treatment actuator module 4320 includes one or more of the following algorithms: phase determination algorithm 4321, waveform determination algorithm 4322, ventilation determination algorithm 4323, flow restriction determination algorithm 4324, apnea / insufficiency determination algorithm 4325, snoring determination algorithm 4326, openness determination algorithm 4327, and treatment parameter determination algorithm 4328.

[0279] 5.4.2.2.1 Phase Determination 4321

[0280] In one form of this technology, the RPT device has an uncertain phase of 4000.

[0281] In another form of this technology, the RPT device 400 utilizes a phase determination algorithm 4321 to determine the phase. The phase determination algorithm 4321 receives a signal indicating the respiratory flow rate Qr as input and provides the phase of 1000 respiratory cycles of the patient as output.

[0282] In some forms, the phase output can include discrete variables with values ​​for one or more inhalations, intermediate inspiratory pauses, and exhalations. For example, when the respiratory flow rate Qr has a positive value exceeding a positive threshold, the phase output can be determined as discrete values ​​with inhalation, and when the respiratory flow rate Qr has a negative value smaller than a negative threshold, the phase output can be determined as discrete values ​​with exhalation.

[0283] In other forms, the phase output can include a continuous variable, such as a change from 0 to 1 or from 0 to 2Pi.

[0284] 5.4.2.2.2 Waveform Determination 4322

[0285] In one form of this technology, the control module 4330 controls the pressure generator 4140 to provide approximately constant positive airway pressure ventilation throughout the patient's respiratory cycle.

[0286] In other forms of this technology, the control module 4330 controls the pressure generator 4140 to provide positive airway pressure ventilation according to a predetermined waveform of pressure versus phase. In one form, the waveform remains at approximately a constant level for all phase values. In another form, the waveform is a square wave with higher values ​​for some phase values ​​and lower values ​​for others.

[0287] In some forms of this technology, waveform determination algorithm 4322 receives a value indicating the current patient ventilation (Vent) as input and provides a pressure-to-phase waveform as output. For example, ventilation determination algorithm 4323 may receive respiratory flow rate (Qr) as input and determine a measurement indicating patient ventilation (Vent). The current value of patient ventilation (Vent) may be determined to be half the lower absolute value of respiratory flow rate (Qr).

[0288] 5.4.2.2.3 Ventilation Determination 4323

[0289] In one form of this technology, the ventilation determination algorithm 4323 receives respiratory flow rate Qr as input and determines a measurement indicating patient ventilation (Vent).

[0290] In some forms of this technology, ventilation determination algorithm 4323 determines the current value of patient ventilation (Vent) as half the absolute value of the low-pass filter of respiratory flow (Qr).

[0291] 5.4.2.2.4 Determination of Inspiratory Flow Limit 4324

[0292] In one form of this technology, the central controller executes one or more algorithms 4324 for detecting inhalation flow limit.

[0293] In one form, algorithm 4324 receives the respiratory flow signal Qr as input and provides a metric as output indicating the range of the inhaled portion of the breath that shows the inhaled flow limit.

[0294] In one form of this technique, the inspiratory portion of each breath is identified by a zero-crossing detector. Multiple evenly spaced points (e.g., sixty-five) representing time points are interpolated along the inspiratory flow-time curve used for each breath by an interpolator. The curve described by the points is then calibrated by a scaler to have an overall length (duration / period) and an overall region to remove the effects of altered respiratory rate and depth. The calibrated breath is then compared in a comparator to a pre-stored template representing normally unobstructed breathing. Figure 6aThe inhalation portion of the breathing shown is similar. Breaths that deviate more than a specific threshold (typically 1 scale unit) from this template at any point during the inhalation process, as determined by the test element (such as those occurring due to coughing, sighing, swallowing, and hiccups), are rejected. For the non-rejected data, a moving average of a first calibration point is calculated by the central controller 4230 for the previous few breathing events. This is repeated for the same inhalation event for the second point, etc. Thus, for example, sixty-five calibration data points are generated by the central controller 4230, and these sixty-five calibration data points represent the moving average of the previous few inhalation events, such as three events. The moving average of the continuously updated values ​​of the (e.g., sixty-five) points is referred to below as the “calibrated flow rate” indicated by Qs(t). Alternatively, a single inhalation event may be used in addition to the moving average.

[0295] By calibrating the flow rate, two shape factors related to the determination of local obstacles can be calculated.

[0296] Shape factor 1 is the ratio of the average of the intermediate (e.g., 32) calibration flow points to the average of all (e.g., 65) calibration flow points. A ratio greater than 1 indicates normal breathing. A ratio of 1 or less indicates obstructed breathing. A ratio of approximately 1.17 is considered the threshold between partially obstructed and unobstructed breathing, and is equal to the degree of obstruction that would allow sufficient oxygen to be maintained in a normal user.

[0297] Shape factor 2 is calculated as the RMS deviation from the unit calibrated flow rate obtained above the midpoint (e.g., 32). An RMS deviation of approximately 0.2 units is considered standard. A zero RMS deviation is considered a fully flow-limited breath. The closer the RMS deviation is to zero, the more flow-limited the breath will be considered.

[0298] Shape factors 1 and 2 can be used alternatively or in combination. In other forms of this technique, the number of sampling points, breaths, and intermediate points can differ from those described above. Furthermore, the threshold can be any value other than those described.

[0299] 5.4.2.2.5 Determination of Apnea and Insufficiency 4325

[0300] In one form of this technology, the central controller 4230 executes one or more algorithms 4325 to determine the presence of apnea and / or insufficiency of breathing.

[0301] Preferably, one or more algorithms 4325 receive a respiratory flow signal Qr as input and provide a flag indicating that apnea or insufficiency of breathing has been detected as output.

[0302] In one form, apnea is considered detected when a function of respiratory flow Qr falls below a flow threshold during a predetermined time period. This function can determine peak flow, relatively short-term average flow, or an intermediate flow between a relatively short-term average and peak flow, such as RMS flow. The flow threshold can be a relatively long-term flow measurement.

[0303] In one form, insufficiency is considered detected when a function of respiratory flow Qr falls below a second flow threshold during a predetermined time period. This function can determine peak flow, relative short-term average flow, or an intermediate flow between the relative short-term average and peak flow, such as RMS flow. The second flow threshold can be a relatively long-term flow measurement. The second flow threshold is greater than the flow threshold used to detect apnea.

[0304] 5.4.2.2.6 Snoring confirmed 4326

[0305] In one form of this technology, the central controller 4230 executes one or more snoring algorithms to detect snoring.

[0306] In one form, the snoring algorithm 4326 receives the respiratory flow signal Qr as input and provides a measure of the range in which snoring is present as output.

[0307] Preferably, algorithm 4326 includes the step of determining the intensity of the flow signal in the range of 30-300 Hz. Furthermore, preferably, algorithm 4326 includes the step of filtering the breathing flow signal Qr to reduce background noise, such as the sound of airflow from a blower system.

[0308] 5.4.2.2.7 Determining Airway Opening 4327

[0309] In one form of this technology, the central controller 4230 executes one or more algorithms 4327 to determine airway occupancy.

[0310] In one form, the airway opening algorithm 4327 receives the respiratory flow signal Qr as input and determines the signal energy in a frequency range of approximately 0.75 Hz to approximately 3 Hz. A peak within this frequency range is considered to indicate an open airway. The absence of a peak is considered to indicate a closed airway.

[0311] In one form, the sought-after peak frequency range is the frequency of small forced oscillations within the therapeutic pressure Pt. In one implementation, the forced oscillations have a frequency of 2 Hz and an amplitude of approximately 1 cmH2O.

[0312] In one form, the airway opening algorithm 4327 receives the respiratory flow signal Qr as input and determines the presence or absence of a cardiac signal. The absence of a cardiac signal is considered an indication of a closed airway.

[0313] 5.4.2.2.8 Determination of Treatment Parameters 4328

[0314] In one form of this technology, the central controller 4230 executes one or more treatment parameter determination algorithms 4328 to determine the target treatment pressure Pt to be transmitted through the RPT device 4000.

[0315] Preferably, the treatment parameter determination algorithm 4328 receives one or more of the following as input:

[0316] • Measurements during the respiratory phase;

[0317] Waveform;

[0318] • Measurements of ventilation;

[0319] • Measurement of inhalation flow limit;

[0320] • Measurements of the presence of apnea and / or insufficiency;

[0321] • Measurements of the presence of snoring; and

[0322] • Measurement of airway patency.

[0323] The treatment parameter determination algorithm 4328 determines the treatment pressure Pt based on an index or measurement of one or more of flow restriction, apnea, hypopnea, open breathing, and snoring. In one implementation, these measurements are determined on a single breath basis rather than on a collection of several previous breaths.

[0324] Figure 4eThis is a flowchart illustrating a method 4500 executed by a central controller 4230 as an implementation of algorithm 4328. Method 4500 begins at step 4520, where the central controller 4230 compares a measurement of the presence of apnea / insufficiency with a first threshold and determines whether the measurement exceeds the first threshold within a predetermined time period, indicating that apnea / insufficiency has occurred. If so, method 4500 proceeds to step 4540; otherwise, method 4500 proceeds to step 4530. At step 4540, the central controller 4230 compares a measurement of airway patency with a second threshold. If the airway patency measurement exceeds the second threshold, it indicates that the airway is open, the detected apnea / insufficiency is considered central, and this method 4500 proceeds to step 4560; otherwise, the apnea / insufficiency is considered obstructive, and method 4500 proceeds to step 4550.

[0325] At step 4530, the central controller 4230 compares the measured value of the flow restriction with a third threshold. If the measured value of the flow restriction exceeds the third threshold, indicating that the inhalation flow is restricted, then method 4500 proceeds to step 4550; otherwise, method 4500 proceeds to step 4560.

[0326] At step 4550, the central controller 4230 increases the treatment pressure Pt by a predetermined pressure increment ΔP, provided that the increased treatment pressure Pt will not exceed the upper limit Pmax. In one implementation, the predetermined pressure increment ΔP and the upper limit Pmax are 1 cmH2O and 20 cmH2O, respectively. This method 4500 then returns to step 4520.

[0327] At step 4560, the central controller 4230 reduces the treatment pressure Pt by a reduction amount, provided that the reduced treatment pressure Pt will not fall below the lower limit Pmin. This process 4500 then returns to step 4520. In one implementation, this reduction is proportional to the value of Pt - Pmin, so that the decrease in Pt to the lower limit Pmin is exponential in the absence of any detected event. Alternatively, the reduction in Pt can be predetermined, so that the decrease in Pt to the lower limit Pmin is linear in the absence of any detected event.

[0328] 5.4.2.3 Control Module 4330

[0329] According to one aspect of the present technology, the control module 4330 receives the target therapeutic pressure Pt as input and controls the pressure generator 4140 to transmit this pressure.

[0330] According to one aspect of the present technology, the control module 4330 receives EPAP pressure and IPAP pressure as inputs and controls the pressure generator 4140 to transmit these corresponding pressures.

[0331] 5.4.2.4 Fault Detection 4340

[0332] In one form of this technology, the central controller 4230 performs one or more methods to detect fault conditions. Preferably, the fault conditions detected by one or more methods include at least one of the following faults:

[0333] • Power failure (no power, or insufficient power)

[0334] • Converter fault detection

[0335] • The presence of the component cannot be detected.

[0336] • Operating parameters outside the recommended range (e.g., pressure, flow rate, temperature, partial pressure of oxygen (PaO2))

[0337] • A test alarm malfunction that generates a detectable alarm signal.

[0338] When a fault condition is detected, the corresponding algorithm indicates the presence of the fault through one or more of the following:

[0339] • Activate auditory, visual, and / or kinetic (e.g., vibration) alarms.

[0340] Send information to external devices

[0341] • Event log recording

[0342] 5.5 Humidifier 5000

[0343] 5.5.1 Overview of Humidifiers

[0344] In one form of this technology, a humidifier 5000 is provided to change the absolute humidity of the air intended to be delivered to the patient relative to the ambient air. Typically, the humidifier 5000 is used to increase the absolute humidity and the temperature of the airflow relative to the ambient air before it is delivered to the patient's airway.

[0345] There are several performance and / or design requirements that may be associated with humidifiers. Some known performance and / or design requirements related to humidifier design may include: reduction in humidifier size and / or footprint (e.g., for bedside placement), the ability to provide humidification throughout the treatment, efficient use of water supply, requirements for connection to the breathing apparatus, minimization of pressure drop in the airflow through the humidifier, and / or the requirement to maintain positive pressure at the inlet of the patient's airway (e.g., thereby maintaining positive pressure within the humidifier). One of the objectives of this technology is to address or improve at least some of the above performance and / or design requirements.

[0346] exist Figure 5a A simplified representation of a humidifier 5000 is shown. In one form, the humidifier 5000 may include a humidifier reservoir 5110, a heating element 5340, and one or more sensors 5270. The humidifier 5000 may be configured to receive an airflow from a pressure generator 4140 via an air circuit 4170, and to deliver the humidified airflow to the patient interface 3000, for example, via a hot air circuit 4147. Figure 5a (Not shown in the image).

[0347] exist Figure 5b A simplified schematic diagram of a humidifier 5000 according to an example of the present technology is shown. The humidifier 5000 may include one or more controllers 5250, such as a hot air circuit controller 5254, a heating element controller 5252, or a central humidifier controller 5251. The controller 5250 may be a discrete controller or a single controller performing multiple functions. The controller 5250 may be electrically connected to one or more of the following: Figure 5b The diagram shows one or more sensors 5270, input device 4220, output device 4290, hot air circuit 4171, and heating element 5240.

[0348] 5.5.2 Humidifier Mechanical Components 5100

[0349] 5.5.2.1 Water storage unit connection part 5130

[0350] like Figures 13 to 16 As shown, the humidifier 5000 may include a water reservoir docking member 5130 for receiving a water reservoir 5110. Figure 14 As shown, the water reservoir docking member 5130 may include a cavity 5160 formed therein to receive the water reservoir 5110. In one form, such as Figures 13 to 16As shown, the reservoir docking connector 5130 can be integrated with the humidifier 5000. The reservoir docking connector 5130 can also connect the reservoir 5110 to a pneumatic path. In this arrangement, the reservoir docking connector 5130 includes a docking air outlet 5168 to flow airflow to the reservoir 5110 docking connector, a docking air inlet 5170 to receive airflow already humidified in the reservoir 5110 docking connector, and a humidifier outlet 5172 to flow humidified airflow to the air circuit 4170. The cavity 5160 may include a top portion configured to cover at least a portion of a lid of the reservoir 5110 and a bottom portion including a heating plate 5120.

[0351] It should be understood that the storage connector 5130 can be provided separately to the humidifier 5000 in an alternative arrangement. In this arrangement, other interfaces can be used to connect the storage connector 5130 to the humidifier 5000.

[0352] In another arrangement, the reservoir docking part 5130 may include an opening in a substantially horizontal plane, allowing the reservoir 5110 to be inserted from above or below the reservoir docking part 5130.

[0353] 5.5.2.2 Water Storage Unit 5110

[0354] Figures 9 to 12 One form of the water reservoir 5110 is shown, which includes a reservoir base 5112, a reservoir lid 5114, and an intermediate portion 5202 including a compliant portion 5116. The reservoir 5110 is configured to hold a given maximum capacity of liquid (e.g., water), typically several hundred milliliters, such as 300 milliliters (ml), 325 ml, 350 ml, or 400 ml, although it should be understood that liquids of 100 ml, 200 ml, 250 ml, 500 ml, or more or less can be used. In one form, such as... Figure 11 and Figure 12 As shown, the water reservoir 5110 may include a cavity formed by multiple walls to hold a given maximum capacity of liquid.

[0355] According to one aspect, the reservoir 5110 is configured to increase humidity to the airflow from the RPT device 4000. The reservoir 5110 may be configured to do so by facilitating the airflow through the reservoir 5110 in a tortuous path. The reservoir 5110 is also configured to prevent liquid from leaving, such as when the reservoir 5110 is moved and / or rotated from its normal operating orientation, liquid will not leak through any perforations and / or between its sub-components. Since the airflow to be humidified by the humidifier 5000 is typically pressurized, the reservoir 5110 may also be configured to prevent aerodynamic pressure loss through leakage and / or flow resistance.

[0356] The reservoir 5110 may include an inlet 5118 for receiving airflow into the reservoir 5110, and an outlet 5122 for conveying airflow from the reservoir 5110. In one form, the reservoir 5110 may include an inlet pipe 5124 and / or an outlet pipe 5126 (see, for example, see...). Figure 10 and Figure 12 In one configuration, inlet 5118 is integrally formed with inlet pipe 5124 as an inlet component and outlet 5122 is integrally formed with outlet pipe 5126 as an outlet component (see [link]). Figures 10-12 , Figures 22-29 as well as Figures 47a-52b In other configurations, inlet pipe 5124 and / or outlet pipe 5126 may be separate pipes connected to inlet pipe 5118 and / or outlet pipe 5122 respectively (see [reference]). Figures 41a to 46 The water reservoir 5110 is configured to increase the humidity of the airflow when the airflow passes through the reservoir 5110.

[0357] 5.5.2.2.1 Water reservoir cover 5114

[0358] In one form, the reservoir cover 5114 is pivotally connected to the base 5112 via a hinge 5158 to allow the reservoir 5110 to be in place, as Figure 11 The opening construction shown is similar to... Figure 9 and Figure 10 The diagram shows the transition between closed configurations. When the reservoir 5110 is in its closed configuration, the compliant portion 5116 is arranged to form a sealing engagement between the base 5112 and the cover 5114 to seal the base 5112 and the cover 5114 and prevent water from leaking out of the reservoir 5110. The hinge 5158 can be coupled to a complementary hinge recess 5159 positioned in the reservoir base 5112 (see [link]). Figure 12 In one form, the lid 5114 may be constructed from a bio-compliant material such as plastic or thermoplastic polymer, such as acrylonitrile butadiene styrene (ABS) or polycarbonate.

[0359] Another aspect of this technology relates to the operation of a pivoting motion in the cover 5114 regarding the base 5112. When the cover 5114 rotates about the hinge 5158, it can be as follows: Figure 51a and Figure 51b The rotation range is defined as shown. In one form, the rotation range can be defined at both ends by the closure of the cover 5114 relative to the base 5112, wherein one of the two ends can be a fully open position defined by the rotation guide 5220, which is capable of abutting against the rotation stop 5222 in the fully open position.

[0360] 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 disconnect from the base 5112. For example... Figure 51b and Figure 52b As shown, in the fully open position, the rotation guide 5220 can contact the rotation stop 5222. In this form, attempting 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, from the application of excessive force. In one form, the hinge 5158 may be configured to allow the connection to be disengaged from the base 5112 (e.g., when the reservoir 5110 is in the fully open position) in one direction of the cover 5114 more easily than in the other. Figure 47a and Figure 47b As shown, this can be achieved, for example, by introducing a taper into the hinge 5158 on the cover 5114.

[0361] 5.5.2.2.2 Compliance Section 5116

[0362] In one embodiment, when the reservoir 5110 is in use, the compliant portion 5116 can serve as a seal between the reservoir base 5112 and the reservoir cover 5114. As will be described in further detail below, the compliant portion 5116 can also perform other functions, such as improving the thermal contact between the reservoir 5110 and the heating plate 5120.

[0363] The compliant portion 516 may be part of the reservoir cover 5114 or the reservoir base 5112, or independent of both, such as being part of the intermediate portion 5202. The compliant portion 5116 may engage with the reservoir cover 5114 or the reservoir base 5112 in various ways, including but not limited to ultrasonic welding, friction fitting, adhesive bonding, or by using an intermediate component. The intermediate portion 5202 may include the compliant portion 5116 and the carrier 5117 (e.g., Figure 12 (as shown in the image).

[0364] This compliant portion 5116 preferably includes a sufficiently resilient construction to resist forces and / or pressures generated within the reservoir 5110, such as those 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 conforms to their shape. In one form, the carrier 5117 of the intermediate portion may be constructed of a nylon material approximately 2 mm thick (such as 1 mm, 1.5 mm, 2.5 mm, or 3 mm), and a silicone material may be used to overmold onto the carrier 5117 to form the compliant portion of the intermediate portion 5202.

[0365] In some arrangements, the compliant 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 parts that can be assembled together by means of the compliant portion 5116 connected therebetween.

[0366] In an alternative arrangement, the compliant portion 5116 may be positioned, for example, integrally overmolded or as a separate component connected as a sub-assembly within the wall of the reservoir base 5112 and / or the wall of the reservoir cover 5114. In this arrangement, the compliant portion may not be positioned 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 from multiple portions to provide various degrees of compliance during movement of the reservoir 5110.

[0367] 5.5.2.2.3 Water storage tank base 5112

[0368] According to one arrangement, the reservoir base 5112 includes a conductive portion (such as, for example, see [reference]) configured to be thermally connected to the heating plate 5120 of the humidifier 5000. Figure 12 The base conductive plate 5152 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 conductive plate 5152 may be made of a thermally conductive material such as aluminum (e.g., approximately 2 mm thick, such as 1 mm, 1.5 mm, 2.5 mm, or 3 mm) or another thermally conductive material such as metal. In some cases, suitable thermal conductivity can be achieved by using a smaller conductive material with appropriate thickness.

[0369] The reservoir base 5112 may also be configured as a receiving element to maintain a given maximum capacity of the liquid held by the reservoir 5110. In one form, the base 5112 may include other features such as anti-overflow features, as will be described in further detail below. In one form, the reservoir base 5112 may also include a base upper body 5146 and a base bottom plate 5148, which, together with the base conductive plate 5152, can form a container, for example, see [link to relevant documentation]. Figure 12 .

[0370] The base upper body 5146 and / or base base plate 5148 may be made of a biocompatible material suitable for maintaining liquid volume, such as plastics or thermoplastic polymers, such as ABS or polycarbonate. The base conductive plate 5152 may include a sealing element 5150, for example, see [link to documentation]. Figure 12 It can be integrated into and / or hermetically connected to both the base upper body 5146 and the base bottom plate 5148 to prevent water from leaving the reservoir 5110, especially from the base 5112. For example, the sealing element 5150 can be overmolded onto the base conductive plate 5152, and the formed component can be fixed between the base upper body 5146 and the base bottom plate 5148.

[0371] In such Figure 12 In the form shown, the base 5112 may include a base upper body 5146, a base bottom plate 5148, and a base conductive plate 5152. However, it should be understood that the reservoir base 5112 can be constructed with 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 parts, for example, including a lower component and an upper component. In this arrangement, the lower component may be constructed of a thermally conductive material and perform the functions of the base conductive plate 5152, the sealing element 5150, and the base bottom plate 5148, and the upper component may be equivalent to the base upper body 5146 and may be constructed of polycarbonate material.

[0372] In one form, for example, Figure 53 and Figure 54 As shown, the reservoir base 5112 may further include an inner lip 5224 and / or an outer lip 5226. According to one aspect, for example, when the intermediate portion 5202 is compressed or when the intermediate portion 5202 is vibrating, the inner lip 5224 and / or the outer lip 5226 may prevent liquid from leaving the reservoir 5110 through the interface between the intermediate portion 5202 (e.g., the compliant portion 5116) and the base 5112.

[0373] 5.5.2.2.4 Connection from water storage unit to humidifier

[0374] When in use, the water reservoir 5110 receives, for example, an airflow output from the RPT device 4000. In one form, such as Figures 13 to 16 As shown, the reservoir 5110 is removably connected to the humidifier 5000 by inserting the reservoir into the reservoir docking part 5130, for example by sliding. The inlet 5118 of the reservoir 5110 is configured to receive and direct the airflow output from the RPT device 4000 into the reservoir 5110. As the air travels through the reservoir 5110, humidity (i.e., water vapor) increases in the airflow, and the humidified airflow exits the reservoir 5110 through the outlet pipe 5126 and proceeds to the reservoir outlet 5122. The reservoir outlet 5122 can be connected to the air circuit 4170 to deliver the humidified airflow to the patient 1000.

[0375] exist Figure 14 and Figure 16 The double-ended arrows indicate the relative direction of movement between the humidifier 5000 and the water reservoir 5110 in this arrangement, i.e., generally horizontal movement. However, the water reservoir 5110 can be connected to the humidifier 5000 by means such as insertion in a generally vertical direction, connection through one or more intermediate parts (e.g., pipes), or other methods integrally formed with the humidifier.

[0376] In an alternative arrangement not shown, the water reservoir 5110 may be inserted into the mating cavity 5160 from a vertical position rather than by sliding motion. In this arrangement, the mating cavity of the humidifier 5000 may include a movable cover, such as a lid or top portion, which opens at least partially to allow insertion of the water reservoir 5110 and closes after insertion to secure the water reservoir 5110 within the mating cavity 5160.

[0377] In the arrangement shown (see) Figure 16 The reservoir outlet 5122 can be connected to the reservoir docking air inlet 5170, through which the humidified airflow travels to the humidifier outlet 5172. The humidifier outlet 5172, as in... Figure 13 The double-ended dashed arrow shown in the image (see...) Figure 13It can be connected to the air circuit 4170. The advantage of this arrangement is that the humidifier reservoir 5110 can be removed from the docking chamber 5160 while the air circuit 4170 remains attached to the humidifier outlet 5172. Thus, the insertion and removal of the humidifier reservoir 5110 are independent of the connection to the air circuit 4170. Another advantage is that the humidifier reservoir 5110 must be removed from the humidifier docking chamber 5130 to allow for liquid filling. In this configuration, when the reservoir 5110 is inserted into the humidifier 5000 in the operating configuration, neither the inlet 5118 nor the outlet 5122 of the reservoir 5110 is exposed, while the reservoir 5110 itself remains accessible to the patient 1000, for example, to allow for easy removal from the humidifier 5000. Because the humidifier reservoir 5110 includes anti-overflow features as further described below, this arrangement reduces the likelihood that a user will cause the reservoir 5110 to overflow beyond a given, maximum liquid volume. Furthermore, when the user is encouraged to remove the reservoir 5110 to refill it with liquid, the likelihood of water overflowing onto or into the humidifier 5000 and / or RPT device 4000 is reduced.

[0378] like Figure 16 As shown, the first docking seal 5132 and the second docking seal 5134 can be configured to assist in sealing the connection between the reservoir inlet 5118 and the docking member 5130, as well as the connection between the reservoir outlet 5122 and the docking member 5130.

[0379] exist Figure 15 and Figure 16 In the arrangement shown, 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 allow the water reservoir 5110 to engage with the water reservoir docking member 5130, with the compliant portion 5116 being pressed, for example, between approximately 1 mm and approximately 5 mm, such as approximately 2 mm, approximately 3 mm, or approximately 4 mm. Thus, 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 the height of the water reservoir 5110 when the compliant portion 5116 is pressed is slightly less than the height of the docking member cavity 5160, allowing the water reservoir 5110 to be inserted into the docking member cavity 5160.

[0380] The compliant part 5116 can be constructed to have, for example, Figure 39The cross-sectional shape of one is shown. A clamping force is required to adequately clamp the compliant portion 5116 and allow relative movement (i.e., sliding) between the reservoir 5110 and the reservoir docking member 5130. For example, a clamping force, such as approximately 10 N to approximately 30 N, or approximately 20 N measured at the handle recesses 5154, 5156, or some other clamping force, is required to allow the reservoir 5110 to be inserted into the docking member cavity 5160. When this clamping force is applied at the handle recess and the reservoir 5110 is inserted into the reservoir docking member 5130, the vertical clearance achieved between the reservoir 5110 and the docking member cavity 5160 during the insertion (or removal) process can be between approximately 1 mm and approximately 5 mm, for example, approximately 2 mm, 3 mm, or 4 mm. The reservoir 5110 and the reservoir docking part 5130 can be arranged such that once the reservoir 5110 is connected to the reservoir docking part 5130 and the patient 1000 no longer applies pressure, the amount of pressure in the compliant part 5116 is reduced. The reduction in pressure can be between about 0.5 mm and about 2.5 mm, for example, about 1 mm, 1.5 mm or 2 mm.

[0381] The compliant portion 5116 may be constructed from an elastomeric material such as silicone, thermoplastic elastomer (TPE), TPE polyester, TPE polyurethane, or natural rubber. When selecting the material to be used for the compliant portion 5116, it may be advantageous to choose a material that does not undergo mechanical relaxation across the storage and operating temperature range to which the compliant portion 5116 may be exposed. An example of a material for the compliant portion 5116 that meets these requirements could be silicone.

[0382] like Figure 40 As shown, a reservoir latch 5186 may be provided on the reservoir 5110 such that when the reservoir latch 5186 is engaged, it secures the reservoir cover 5114 to the reservoir base 5112. The latch 5186 prevents the reservoir cover 5114 from separating from the reservoir base 5112 and, for example, seals the compliant portion 5116 between the cover 5114 and the base 5112 by pressing. In one form, the latch 5186 may be configured to restrict relative movement of the cover 5114 relative to the base 5112 in only one direction, thereby allowing further pressing of the compliant portion 5116 while preventing separation of the cover 5114 from the base 5112. This may allow the reservoir 5110 to be inserted into the reservoir mating member 5130 and / or, as described elsewhere in this disclosure, allow the compliant portion 5116 to assist in thermal bonding between the reservoir 5110 and the heating plate 5120.

[0383] 5.5.2.2.5 Storage handles 5154, 5156

[0384] Figures 13 to 16An upper handle 5154 is shown positioned on the reservoir cap 5114, and a lower handle 5156 is positioned on the reservoir base 5112. These handles are designed to assist a patient (or user) 1000 in grasping and holding the reservoir 5110. In the illustrated arrangement, the handles 5154, 5156 are positioned away from the hinge 5158 such that the patient 1000 applies force to the reservoir 5110 by holding it with the handles 5154, 5156 to press the compliant portion 5116, which causes the cap 5114 and the base 5112 to push towards each other. The pressing force also helps to maintain the compliant portion 5116 in a sealing engagement between the reservoir base 5112 and the reservoir cap 5114, such as during transfer to / from the refill reservoir 5110 with liquid. It should be understood that handles 5154 and 5156 can be placed on other parts or areas of the water reservoir 5110.

[0385] The handle gripper 5166 can be like Figure 14 The handles 5154 and 5156 are shown disposed on the surfaces of any one or both of them. The handle grip 5166 may be configured to assist the patient 1000 in retaining the reservoir 5110, such as by being made of a higher friction material, a higher friction structure, and / or by being shaped to be easier to retain than the surrounding area of ​​the reservoir 5110. For example, the handle grip 5166 may be constructed of an elastic material such as silicone, while the reservoir 5110 may be constructed primarily of a polycarbonate material. Additionally, or alternatively, the handle grip 5166 may include geometric features such as ribs or spines to reduce the likelihood of slippage between the fingers and the handles 5154 and 5156.

[0386] 5.5.2.2.6 Airflow Path

[0387] In one form of this technology, the airflow is directed to travel through a tortuous path via a reservoir 5110 between an inlet 5118 and an outlet 5122. This prevents any “short circuit” in the airflow that could result in insufficient humidity in the airflow delivered to the patient 1000.

[0388] Figures 17a to 17c , Figures 18a to 18c and Figures 19a to 19c An example path of airflow through reservoir 5110 is shown as airflow enters through inlet 5118 and exits through outlet 5122. The figures are arranged chronologically in three different orthogonal views, each visually illustrating an exemplary flow path. In this arrangement, the airflow contained through inlet 5118 passes through inlet pipe 5124 (… Figures 17a to 17c ), enters the water storage tank 5110 ( Figures 18a to 18cThe airflow then passes through the outlet pipe 5126 as humidifying air at the outlet 5122. Figures 19a to 19c (5110) is located away from the water storage tank. For clarity, Figures 17a to 17c , Figures 18a to 18c as well as Figures 19a to 19c The container 5110 is shown in an exploded view orientation with the cover 5114 and base 5112, and any airflow occurring within the internal volume of the container 5110 is shown in dashed lines. The dashed arrows shown indicate the general direction of the exemplary airflow, although it should be noted that the properties of the airflow mean that any airflow path includes rotation of the air (e.g., turbulence) rather than a straight or direct airflow path.

[0389] In some forms of this technology, the memory 5110 may include, for example: Figure 42 The flow element of the baffle 5192 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. For example, the reservoir 5110 may include, for example, Figure 41a , Figure 41b , Figure 42 , Figure 43a , Figure 43b and Figure 44 The deflector portion 5198 shown, or as... Figure 47a and Figure 47b The deflector portion 5198 and the flow guide 5195 are shown. In some arrangements, as will be described in further detail below, the baffle 5192 may also include a positioning portion 5196.

[0390] exist Figure 41a , Figure 41b , Figure 42 , Figure 43a , Figure 43b and Figure 44 In the arrangement shown, the deflector portion 5198 is configured to prevent airflow from immediately entering the outlet pipe 5126 after exiting the inlet pipe 5124 via the inner end (or outlet of the inner pipe) 5125 (i.e., short-circuiting). In a part of the arrangement (e.g., as...) Figure 41a , Figure 41b , Figure 42 , Figure 43a , Figure 43b and Figure 44 As shown in the diagram, the outlet pipe 5126 can be formed as part of the intermediate portion 5202 and connected to the outlet 5122 of the reservoir when assembled with the cover portion 5114. When the intermediate portion 5202 and the cover portion 5114 are as shown... Figure 41aWhen assembled as shown, the deflector portion 5198 can be positioned near the inner end 5125 of the inlet pipe, for example, by means of an adjoining inner end 5125. In this arrangement, the deflector portion 5198 forms a cover between the base of the inner end 5125 of the inlet pipe and the inner end 5127 of the outlet pipe. This cover can be further advantageous in that it forces airflow through the channel formed by the cover and forces the volume of water in the reservoir 5110 for improved humidity collection.

[0391] exist Figure 47a and Figure 47b In the arrangement shown, the reservoir 5110 includes a flow guide 5195 and a deflector portion 5198. The deflector portion 5198 is configured to prevent short-circuiting of the airflow, and the flow guide 5195 is further configured to guide the airflow exiting the inlet pipe 5124 in a direction approximately parallel to the volume of liquid in the reservoir 5110. This can improve the occurrence of "dispersion," which can happen when the airflow exits the inlet pipe 5124 in a direction perpendicular to the surface of the liquid volume.

[0392] like Figure 22 and Figure 23 As shown, the reservoir 5110 may include an end wall 5128 adjacent to and opposite the inner end 5125 of the inlet pipe. The inner end wall 5128 of the reservoir 5110 directs air away from the inlet pipe 5124 to flow across the water surface before reaching the inner end 5127 of the outlet pipe and flowing out of the outlet 5122 through the outlet pipe 5126. Figures 24 to 27 Examples of other arrangements of the flow element are shown, wherein the reservoir 5110 may include a rotating blade 5136 positioned near the inner end 5125 of the inlet pipe 5124. For example... Figure 26 and Figure 27 As shown, the rotating blade 5136 can be integrally formed as an extension of the inlet pipe 5124, or the rotating blade 5136 can be a separate component positioned near or connected to the inlet pipe 5124. The rotating blade 5136 can also be as follows: Figure 26 and Figure 27 The outline shown.

[0393] exist Figures 17a to 17c , Figures 18a to 18c as well as Figures 19a to 19cThe airflow paths shown are merely exemplary and intended to illustrate that an airflow can traverse one of multiple paths through the reservoir 5110, i.e., the airflow undergoes a certain degree of rotation within the volume of the reservoir 5110, enters the reservoir 5110 through inlet 5118, and exits the reservoir through outlet 5122. Those skilled in the art will understand that the particles or microparticles forming the airflow may not follow a single path within the reservoir 5110 due to multiple factors, including, for example, local turbulence (eddies) or pressure gradients within the reservoir 5110. Therefore, the cumulative paths of the airflow can include any number of paths, wherein the airflow undergoes varying degrees of "rotation" within the reservoir 5110 before exiting via outlet pipe 5126 at outlet 5122. It is also possible that small portions of the airflow may exit the reservoir 5110 as leaks.

[0394] 5.5.2.2.7 Thermal contact / jointing

[0395] According to an aspect of this technology, as described above, the water reservoir 5110 of the humidifier is in thermal contact or thermally bonded to the heating plate 5120. The degree of thermal contact between the two components, measured, for example, by thermal conductivity or contact thermal resistance, can be varied according to several parameters.

[0396] In the prior art, other components have been used to improve the thermal contact between the water reservoir and the heating plate by increasing the contact pressure between them. One example, as described in US4,203,027, is the use of a spring element to connect the heating plate to the humidifier body, thereby pushing the heating plate toward the water reservoir. Another example, as described in WO2010 / 031126, is a humidifier with a lid, wherein a compressible elastomer seal is disposed on the lid. In this example, when the lid is in the closed position, the seal engages against the water reservoir and pushes the water reservoir against the heating plate.

[0397] 5.5.2.2.7.1 Pre-compression for improving thermal contact

[0398] In this technology, for example, the pre-compression of the water reservoir 5110 in engagement with the water reservoir docking member 5130 can be used to help improve the thermal contact between the water reservoir 5110 and the heating plate 5120.

[0399] In one arrangement, the reservoir 5110 may be configured such that, in its operational configuration, such as when placed in the reservoir docking member 5130, the compliant portion 5116 is pressed as described above. The reservoir 5110 and the reservoir docking member 5130 may be further configured such that the pressing force on the compliant portion 5116 pushes the base 5112 of the reservoir 5110 against the heating plate 5120 to improve thermal contact therebetween.

[0400] Thus, the compliant portion 5116 can function as a spring, which is biased in a direction perpendicular to the heating plate 5120 to push the reservoir base 5112 and / or the reservoir cover 5114. Since the reservoir 5110 is externally fixed, such as defined within the reservoir mating member 5130, the pressing of the compliant portion 5116 works by promoting an improved thermal engagement with the heating plate 5120. Figure 20 This effect is shown by the force or pressure applied to the cover 5114, the conforming portion 5116, and the base 5112, as indicated by the arrows shown.

[0401] When the water reservoir 5110 is connected to the humidifier 5000, the force required for clamping the compliant portion 5116 is preferably in the same direction perpendicular to the surface of the conductive portion. This direction may also preferably be in the same direction as the direction of thermal bonding. This force acts through the water reservoir mating member 5130 at its contact point and / or surface, thereby pushing the base 5112 of the water reservoir 5110 together with the heater plate 5120.

[0402] When the reservoir 5110 is placed in the reservoir docking part 5130, the clamping force, measured at the heating plate 5120, can be between approximately 5 N and approximately 15 N. However, it should be understood that different configurations of the reservoir 5110 may require different clamping forces. This force can be altered by changing the design of any one or all of the conforming part 5116, the cover 5114, the base 5112, or the reservoir docking part 5130. For example, if the conforming part 5116 is constructed of a material with a higher Young's modulus, this will correspondingly increase the force. It should be noted that... Figure 20 Only forces and pressures in the vertical direction are shown.

[0403] 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 plate 5120.

[0404] 5.5.2.2.7.2 Use of pressurized air for improved thermal contact

[0405] According to another aspect, when the water reservoir 5110 is connected to the humidifier 5000, the airflow received from the RPT device can pressurize a chamber, such as the interior of the reservoir 5110. This pressurization can be used to increase the level of thermal bonding (i.e., thermal contact) between the reservoir 5110 and the heating plate 5120. The water reservoir 5110 can be further configured such that the level of thermal contact between the reservoir 5110 and the heating plate 5120 can be altered by changing the level of pressure within the chamber.

[0406] In one configuration, the compliant portion 5116 may be configured to be expandable in the thermal contact direction and may define the reservoir 5110 in the same direction via the reservoir mating member 5130. In this configuration, internal pressure pushes the base 5112 of the reservoir 5110 against the heating plate 5120 to improve the thermal bonding level between the heating plate 5120 and the base 5112.

[0407] Figure 21 By Figure 21 The arrows shown indicate the force or pressure applied to the distribution of the cover 5114 and the base 5112, illustrating this effect. Because thermal bonding occurs in the vertical direction in this configuration, therefore... Figure 21 Only the forces and pressures in the vertical direction are shown. The presence of atmospheric pressure above the water reservoir 5110 generates a force in the direction of thermal bonding, and acts through the water reservoir mating member 5130 at its contact surface, thereby pushing the base 5112 of the water reservoir 5110 together with the heating plate 5120 in the direction of thermal bonding. When measured at the heating plate 5120 with a pressure of 20 cmH2O, the magnitude of this force can be between approximately 5 N and approximately 15 N.

[0408] It should be understood that different constructions of the water reservoir 5110 may require different magnitudes of force, which can be achieved by changing the surface area on which the pressure acts or the effective pressure acting on the surface. This change can be achieved, for example, by a pressure regulating valve.

[0409] In another arrangement, the substantially the same effects described above can be achieved through the unopened, compliant portion of the reservoir 5110. The reservoir 5110 and the reservoir mating member 5130 can be arranged such that elasticity or flexibility is provided by an elastic material or joint that allows free movement in the heat transfer direction (e.g., a sliding connection, or a contracting portion of a flexible plastic or a flexible portion in the reservoir). In this configuration, the cap 5114 and the base 5112 can be unrestricted relative to each other in the heat contact direction. The reservoir 5110 can then be defined in the heat transfer direction in another way (e.g., by the reservoir mating member or a similar housing) to generate a reaction force that counteracts the pressure formed by the pressurized airflow within the reservoir 5110, wherein a portion of the reaction force can occur at the heating plate 5120 to improve heat contact. In this arrangement, another opening for refilling the reservoir 5110 can be introduced into the reservoir 5110, such as in the cap 5114, and a separate seal can be included around this opening.

[0410] Figure 34An example of this arrangement is shown, comprising a base 5174, a top 5176, a compliant portion 5178, and a refill cover 5180. In another arrangement, the base, top, and compliant portion can be mounted together, wherein refilling of the reservoir is supplied via the refill cover 5180. The refill cover 5180 can be arranged 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 it is engaged with the reservoir docking member 5130. Furthermore, the compliant portion 5178 can be replaced by any mechanism known in the art capable of accommodating variations in the vertical length within the reservoir.

[0411] In another alternative arrangement, the level of thermal contact between the humidifier reservoir 5110 and the heating plate 5120 can be improved by pressurizing or expanding an auxiliary component using airflow. The auxiliary component can be a chamber, body, or surface acting on the humidifier reservoir 5110, which in turn pushes the reservoir 5110 and the heating plate 5120 together in the thermal bonding direction. Similarly, the auxiliary component can act on the heating plate 5120 to push the heating plate 5120 and the reservoir 5110 together in the thermal bonding direction.

[0412] Auxiliary components may be arranged outside the reservoir 5110 and / or the heating plate 5120. Furthermore, the auxiliary components may be configured to vary the contact area with the reservoir 5110 and / or the heating plate 5120 to further provide a profile of thermal contact change when the airflow pressure changes.

[0413] In an alternative arrangement, the reservoir docking member 5130 may include a retaining mechanism (e.g., a cover that closes around the reservoir 5110) to hold the reservoir 5110 in its desired position. In this arrangement, the reservoir docking member cover may be configured to press and / or define a compliant portion 5116 to improve the level of thermal contact.

[0414] The level of thermal contact can be further improved by utilizing spring-loaded plates or spring-heated plates as known in the art. The heating plate can be configured to have a convex or dome shape facing the humidifier reservoir 5110, such that when the humidifier 5110 engages with the reservoir docking member 5130, the convex heating plate is flat, generating a clamping force to push the heating plate 5120 into the reservoir 5110. Similarly, the conductive plate 5152 of the reservoir 5110 can be dome-shaped or convex and configured to be flat facing the heating plate when the reservoir 5110 engages in the docking member cavity 5160 of the humidifier 5000.

[0415] Any of the aforementioned devices for improving thermal contact can 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.

[0416] 5.5.2.2.8 Storage Inlet / Outlet

[0417] As described above, the reservoir inlet 5118 is configured to receive the airflow entering the reservoir 5110, and the reservoir outlet 5122 is configured to output the humidified airflow. The inlet 5118 and / or outlet 5122 are preferably further configured to prevent liquid from leaving the reservoir 5110 when the reservoir 5110 is translated and / or rotated from its normal operating orientation. Furthermore, as described above, the inlet 5118 and / or outlet 5122 are preferably configured to prevent short-circuiting of the airflow. In one form, the inlet 5118 may be configured to prevent liquid “splashing” or splashing, which could be caused by air jets impacting the volume of liquid in the reservoir 5110.

[0418] In such Figure 22 In one arrangement shown, the reservoir inlet 5118 includes an inlet pipe 5124 to provide a flow path for an inlet airflow into the reservoir 5110, and the reservoir outlet 5122 includes an outlet pipe 5126 to provide a flow path for an outlet humidified airflow from the reservoir 5110.

[0419] In such Figure 26 and Figure 27 In one configuration shown, the rotating blade 5136 can be advantageously configured such that the lowest portion of the rotating blade 5136 extends below the lowest portion of the outlet pipe 5126. This further prevents any “splashing” water from entering the inlet pipe 5124.

[0420] The water reservoir 5110 is preferably configured to provide tilt overflow protection to prevent water from flowing back through the outlet pipe 5126 or the inlet pipe 5124. Water flowing out through the inlet pipe 5124 is particularly undesirable, as it may introduce water into the RPT device 4000 and damage electrical components (such as motors, flow sensors, or printed circuit boards) by contact with water.

[0421] In one arrangement of this technology, by arranging the inner end 5125 of the inlet pipe, the reservoir 5110 achieves overflow protection, such that when the reservoir 5110 is rotated 90 degrees from its working, horizontal orientation in any direction, a given maximum capacity of water can be stored in the reservoir 5110 without reaching the inner end 5125 of the inlet pipe.

[0422] In another arrangement of storage 5110, when in, for example from, Figure 28 and Figure 29 When viewed in the plane shown above, the axes of the inlet pipe 5124 and the outlet pipe 5126 may intersect each other. When one of the pipes passes under the other, such as when the inlet pipe 5124 passes under the outlet pipe 5126, the inlet pipe 5124 and the outlet pipe 5126 may not be connected to each other.

[0423] This configuration improves tilt overflow protection by arranging the inlet pipe 5124 and outlet pipe 5126 so that when the reservoir 5110 tilts away from its operating orientation, water must reach the higher end of the inlet pipe 5124 or outlet pipe 5126 to leave the reservoir 5110. For example, as Figure 29 As shown, if the reservoir 5110 is tilted so that the water reaches the lower part of the inner end 5125 of the inlet pipe, then the water must still rise higher to reach the outer end of the inlet pipe 5124 or the inlet 5118 to leave the reservoir 5110.

[0424] Figures 35-38 The figures show a simplified description of the effect formed by the intersecting inlet and outlet pipes, with the inner surface shown by dashed lines. These figures also show an alternative arrangement of the water reservoir 5110, where the inlet 5118 and outlet 5122 include an inlet pipe 5124 and an outlet pipe 5126, respectively. Figure 35 and Figure 36 This shows that when viewed from the side (e.g.) Figure 36 As shown in the diagram, the tube's axes intersect during observation, and Figure 37 and Figure 38 This shows that when viewed from the side (e.g.) Figure 38 An alternative construction (shown in the diagram) in which the tube's axis is substantially parallel when observed. Figures 35 to 38 In this context, it is assumed that the volume of water 5128 fills approximately half the volume of storage 5110, and the water level 5184 is indicated by a horizontally extending dashed line.

[0425] When the water storage device 5110 is as follows Figure 35 and Figure 36 When the orientation is shown, the arrangement of the inlet pipe 5124 and outlet pipe 5126 requires that if any water 5182 leaves the reservoir 5110, then the water level 5184 rises above the higher end of the inlet pipe 5124 or the higher end of the outlet pipe 5126. In another aspect, in Figure 37 and Figure 38 In the arrangement shown, the water level 5184 only needs to be raised to the same height as the lower end of the inlet pipe 5124 or the outlet pipe 5126 in order to leave the water reservoir 5110.

[0426] When the water level 5184 changes according to the orientation of the reservoir 5110, this effect of the cross inlet pipe 5124 and outlet pipe 5126 can be reshaped to suit the shape of the reservoir 5110, for example, by reorienting the inlet pipe 5124 and outlet pipe 5126 to any desired orientation. In some forms, the inlet pipe 5124 and outlet pipe 5126 may be cross-shaped when viewed from multiple orthogonal angles.

[0427] exist Figure 28 and Figure 29 as well as Figures 35-38 In the form shown, the inner end of the inlet pipe 5125 and the inner end of the outlet pipe 5127 are positioned within the cavity, and the outer ends of the inlet pipe 5126 and the outlet pipe 5127 are respectively positioned in one of the plurality of walls of the cavity at the inlet 5118 and the outlet 5122. A first axis (inlet pipe axis) is defined between the inner end of the inlet pipe 5125 and the inlet 5118, and a second axis (outlet pipe axis) is defined by the inner end of the outlet pipe and the outlet 5122. When the reservoir is tilted (e.g., at approximately 90° relative to normal operating orientation), the first axis has a first angle such that the inner end of the inlet pipe 5125 and the inlet 5118 are positioned at different heights, such that a predetermined maximum capacity of water is below at least one of the inner end of the inlet pipe 5125 or the inlet 5118 to prevent water from overflowing through the inlet pipe 5124. Furthermore, when the reservoir is tilted (e.g., at approximately 90° relative to normal operating orientation), the second axis has a second angle such that the inner end 5127 of the outlet pipe and the outlet 5122 are positioned at different heights, such that the predetermined maximum capacity of water is below at least one of the inner end 5127 of the outlet pipe or the outlet 5122 to prevent water from overflowing through the outlet pipe 5126. This effect can also be achieved where 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.

[0428] 5.5.2.2.9 Storage arrangement with removable inlet / outlet pipes

[0429] In yet another example of the current technology, memory 5110 can be as follows: Figure 41a , Figure 41b as well as Figure 42 The structure is shown in the figure. In this example, the reservoir 5110 includes a cover portion 5114, a middle portion 5202, and a base portion 5112 (for clarity, in...). Figure 41a and Figure 41b (The base portion is 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, when engaged with each other, while being releasably engaged with each other. For example, as Figure 41bAs shown, 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.

[0430] As shown, the intermediate portion 5202 may further include a carrier 5117, a baffle 5192, and at least one support spoke 5194. The support spoke 5194 may be configured as a 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 a direct air path (or a short circuit as described above) between the inner end of the inlet 5125 and the inner end of the outlet pipe 5127 to facilitate airflow movement within the reservoir to improve the humidity taken in by the airflow within the reservoir 5110. Furthermore, the compliant portion 5116 may be integrated with the intermediate portion 5202 as shown or may be formed as a separate component to the intermediate portion.

[0431] The advantage of this arrangement can be the improved cleanliness of the reservoir 5110 by separating a portion of the components from the reservoir, such as inlet pipe 5124 and / or outlet pipe 5126. This arrangement can be particularly advantageous, as these features may prevent access to the interior of the reservoir 5110 when at least one of the inlet pipe 5124 or outlet pipe 5126 extends into the internal volume of the reservoir 5110. Figure 41a and Figure 41b As can be seen, the intermediate portion 5202 and the cover portion 5114 are engaged in their normal operating orientation. However, when the intermediate portion 5202 and the cover portion 5114 are separable, the inlet pipe 5124 and the outlet pipe 5126 can be separated to improve access to the interior of the cover portion 5114.

[0432] By constructing the upper part of the reservoir using two separable portions 5114, 5202 and / or by constructing inlet and / or outlet pipes 5124, 5126 for releasable engagement with the reservoir 5110, the number of small, hard-to-access areas can be reduced, which can improve the cleanability of the reservoir 5110. Furthermore, the removable inlet pipe 5124 and / or removable outlet pipe 5126 can themselves be made more accessible for cleaning.

[0433] In another example of the prior art (not shown), the lid portion 5114 and the intermediate portion 5202 may each include a portion of a feature, wherein they can be combined to form a complete feature. For example, the lid 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 divided into any number of separable portions, and separable features such as the inlet pipe 5124 and / or the outlet pipe 5126 can be located in any number of arrangements associated with the separable portions.

[0434] Another advantage of the current 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.

[0435] Another method to improve overflow performance is to arrange the inner ends of the inlet pipe 5125 and / or the outlet pipe 5127 near the center of the reservoir 5110, such as near the geometric center of the reservoir volume. In this configuration, the maximum water level that can be stored in the reservoir 5110 is the same when the reservoir 5110 is rotated 90 degrees in any direction from its operating horizontal orientation without reaching the inner ends of the inlet pipe 5125 and / or the outlet pipe 5127. In an example, this configuration of the inlet pipe 5124 and / or outlet pipe 5126 can be provided by a single molding component, for example by combining horizontal and vertical molding tools to form the inlet pipe 5124 and / or outlet pipe 5126 in the desired arrangement. Since the reservoir 5110 is typically manufactured by injection molding, forming the inlet pipe 5124 and / or outlet pipe 5126 as part of the cap 5114 suppresses the introduction of voids above the inlet pipe 5124 and / or outlet pipe 5126. In this configuration, the forming tool, including the internal volume of the cover 5114, is fixed in place by the inlet pipe 5124 and / or the outlet pipe 5126, making forming 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 may be further advantageous.

[0436] It should be understood that the cap portion 5114, the intermediate portion 5202, and the base portion 5112 can be constructed in any number and manner. For example, the relative dimensions of the cap portion 5114 and the base portion 5112 can be varied, and the cap portion 5114 and / or the base portion 5112 can also include various materials or components in their construction. One or more of the inlet pipe 5124 and the outlet pipe 5126 can be removably or releasably coupled to the cap portion 5114 or the base portion 5112, for example, as part of the intermediate portion. The intermediate portion can also be constructed to initially engage the cap portion 5114 and / or the base portion 5112, for example, by being constructed to insert into the cap portion 5114 or the base portion 5112.

[0437] Another feature of this arrangement is the use of support spokes 5194 to provide structural rigidity to the center portion 5202. The spokes 5194, either on their own or in conjunction with the baffle 5192, can provide handles for detaching the center portion 5202 from the cap 5114 or the base portion 5112. This improves usability, as the user can grasp the baffle 5192 and / or the spokes 5194 to separate the center portion 5202 from the cap portion 5114 or the base portion 5112. It should be understood that several other configurations are possible, in which the support spokes 5194 are alternatively arranged as shown in Figure 43 and... Figure 44 The exemplary arrangement shown is illustrated.

[0438] In examples of this technology, such as in Figure 43a , Figure 43b ,and Figure 44 As seen in the diagram, baffle 5192 may include a positioning portion 5196 and a deflecting portion 5198. The positioning portion 5196 may be in the form of a cylinder to assist in accurately positioning baffle 5192 relative to inlet pipe 5124 by fitting around the outer periphery of the vertical portion of inlet pipe 5124, i.e., at the inner end 5125 of inlet pipe. In some forms, such as... Figure 48b As shown, the baffle 5192 may also include a baffle seal 5197 to seal between the baffle 5192 and the inlet pipe 5124. The baffle 5192 may also be configured to be combined with a spoke 5194 such that at least some portions of the baffle 5192 can be used as spokes 5194, or vice versa.

[0439] exist Figures 45a-45b An exemplary cross-section of the assembled cover 5114 is shown. The diameter of the inlet pipe 5124 or the positioning portion 5196 may vary along its length, for example, by altering its arrangement in a truncated cone manner, so as to gradually engage with each other. Figure 45a and Figure 45b As shown, the inlet pipe 5124 and the positioning portion 5196 may also include complementary retaining mechanisms such as the protrusion / slot assembly 5205.

[0440] It should also be understood that the compliant part 5116 can be positioned in Figure 41a , Figure 41b , Figure 42 , Figure 43a , Figure 43b and Figure 44 In alternative locations to the exemplary arrangement shown. For example, the compliant portion 5116 may be formed as part of the cover portion 5114, as part of the reservoir base portion 5112, or formed as a separate component by itself not integrally formed to any of the cover portion 5114, the intermediate portion 5202, and the base 5112. An exemplary method of forming the compliant portion 5116 together with the cover portion 5114 or the base portion 5112 may be by overmolding or by using a mechanical adhesive.

[0441] Figure 46 An exploded view of another example of the present 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 46 (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 5114. Alternatively, the intermediate portion 5202 may engage with 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 5114 may be connected to one or more of the inlet pipe 5124 and the outlet pipe 5126.

[0442] This configuration allows for the removal of inlet pipe 5124 and / or outlet pipe 5126 to improve the cleanliness of reservoir 5110. Furthermore, as mentioned above, this configuration can improve the overflow performance of reservoir 5110 by increasing its internal volume.

[0443] 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 capacity of water that the reservoir 5110 can hold. This configuration allows the pipes 5124 and 5126 to be cleaned without removing any water from the reservoir 5110.

[0444] 5.5.2.2.10 Overflow Prevention

[0445] In some prior art humidifier reservoirs, overflow of a reservoir 5110 with a certain volume of liquid exceeding a predetermined maximum capacity can reduce the effectiveness of overflow prevention features. For example, if the reservoir 511 rotates away from its desired orientation when overflowing, the overflowing liquid in the reservoir 5110 can reach the inlet 5118 at a lower angle than if the reservoir 5110 were only filled with the predetermined maximum capacity of liquid. Therefore, some prior art humidifier reservoirs have included water-fill indicators to reduce the occurrence of such overflow; however, this can only be done in some ways to mitigate this risk, for example, because the user (e.g., patient 1000) may not see or be aware of the meaning of the indicator.

[0446] Some prior art humidifier reservoirs include one or more tubes that can serve as an outflow path for the liquid (typically water) when the reservoir is filled to a volume exceeding a threshold volume. An example of this prior art humidifier is described in PCT Publication WO2009 / 156921. However, a drawback of this arrangement is that any movement of the reservoir if it is filled to this threshold volume can cause liquid to escape from the reservoir (e.g., from the movement of the liquid volume). Therefore, transferring this reservoir (e.g., from a patient's kitchen or bathroom) without overflowing can be difficult, and the risk of overflow during use (i.e., through one or more tubes in the reservoir) can be high. Therefore, these prior art humidifier reservoirs typically include a water fill indicator that indicates the suggested predetermined maximum capacity of water to be filled into the reservoir, which is below (and sometimes significantly below) the threshold volume in which water may begin to overflow from one or more tubes in the reservoir. In some cases, this prior art humidifier reservoir may also include an auxiliary chamber configured to contain water leaving the reservoir, for example, before the water can enter an upstream RPT device.

[0447] Another aspect of this technology is to include one or more overflow protection features configured to prevent the humidifier reservoir from being filled to more than its maximum capacity when the reservoir is filled, such as in its open and / or closed configurations.

[0448] In such Figure 30a and Figure 30bIn one arrangement, the overflow protection feature may include at least one hole 5138 in the water reservoir 5110 to indicate overflow. According to this aspect of the art, when the water reservoir 5110, filled with the reservoir cover 5114, is opened, any water introduced into the reservoir 5110 exceeding its predetermined maximum capacity will overflow from the hole 5138. This will indicate to the user that the reservoir 5110 is full and prevent such overflow. Advantageously, water will overflow only through at least one hole 5138 rather than from the entire area of ​​the water reservoir, resulting in less overflow for the user to clean up. Thus, when the predetermined maximum capacity of water is exceeded, at least one hole limits the outflow path of the water. Figure 30a A water reservoir 5110 in its open configuration is shown, wherein the upper flange or lip 5224 of the base 5112 does not extend across the periphery of the entire opening, forming a hole 5138. Figure 30b A portion of the base 5112 is shown indicating at least one hole 5138. The at least one hole 5138 may be in the form of one or more perforations, holes, slits, or slots, or any other form that allows fluid communication between the interior and exterior of the reservoir 5110. The at least one hole 5138 may be formed in one or more locations around the upper flange or lip 5224 of the base 5112.

[0449] In an alternative arrangement, the overflow protection feature may include an inclined profile 5139. For example... Figure 30c and Figure 30d As 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 overflow when the reservoir base 5112 is filled with water. In this arrangement, when the reservoir cover 5114 is in the open configuration, water can overflow at the base of the sloping profile 5139 rather than from the entire area of ​​the reservoir. Thus, the sloping profile defines the outflow path of the water when the water exceeds a predetermined maximum capacity. An advantage of the above method is that overflow may become more difficult than in the prior art, and it has another advantage: overflow can occur at a more predictable location in response to an attempt to overflow.

[0450] In the example of at least one orifice 5138 and inclined profile 5139 described above, the overflow protection feature is independent of the inlet pipe 5124 and the outlet pipe 5126. That is, the outflow path of water is provided by at least one orifice 5138 or inclined profile 5139 rather than via the inlet pipe 5124 and / or the outlet pipe 5126.

[0451] In one configuration, when the water reservoir 5110 is in its closed configuration, the threshold volume of water required to reach the inlet pipe 5124 and / or the outlet pipe 5126, and thus the pipes 5124, 5126 defining the outflow path of the water, can be greater than a predetermined maximum capacity of water. During its transport or use, this arrangement can allow for a reduction in the risk of water leaking from the reservoir 5110.

[0452] In some cases, the reservoir 5110 may include at least one water fill indicator mark 5140 (e.g., in situations such as...). Figure 57a and Figure 57b (As shown on the base 5112). A water fill indicator 5140 can indicate to the user the predetermined maximum capacity of water contained in the reservoir 5110, such as by indicating the water level to be filled in the reservoir 5110. Other water fill indicator marks 5140_a, 5140_b (e.g., as shown on the base 5112). Figure 57a and Figure 57b (As shown) can indicate the fill height of the storage 5110. In an arrangement (such as...) Figure 57a and Figure 57b As shown in the diagram, the reservoir 5110 may be further configured such that the predetermined maximum capacity of water is substantially the same as the maximum capacity of water that will remain in the reservoir without causing water to leak out through at least one hole 5138 (or a slanted profile 5139 - not shown). Thus, when a user (e.g., patient 1000) attempts to fill the reservoir 5110 beyond the water filling indicator mark 5140, the user will cause water to leak out through at least one hole 5138 or a slanted profile 5139.

[0453] The storage device 5110 can be further, for example, Figure 58a and Figure 58b The configuration shown allows the threshold volume of water required to reach the inlet pipe 5124 and / or outlet pipe 5126 (indicated by water level 5141_2) when the reservoir 5110 is in its closed configuration to be larger than the predetermined maximum capacity of water (indicated by water level 5141_1). Figure 58b As shown, the water level 5141_1 at the predetermined maximum capacity of water can substantially coincide with the base or lower edge of at least one hole 5138 to allow any excess water added above the water fill indicator mark 5140 to escape. When this arrangement contains the predetermined maximum capacity of water, it allows the patient 1000 to more easily transfer the reservoir 5110 and reduces the risk of water spillage / outflow when the humidifier 5000 is in use.

[0454] In an alternative embodiment, the base or lower edge of at least one hole 5138 or inclined profile 5139 may be above a predetermined maximum capacity of water (indicated by water level 5141_1), but below a threshold volume of water (indicated by water level 5141_2). Preferably, the base or lower edge of at least one hole 5138 or inclined profile 5139 may be closer to the predetermined maximum capacity of water (indicated by water level 5141_1) than the threshold volume of water (indicated by water level 5141_2).

[0455] Another aspect of this technology is that when the reservoir 5110 is in its closed configuration, the compliant portion 5116 sealably engages the base 5112 and the reservoir cover 5114 and blocks or seals the hole 5138 or the inclined profile 5139 to prevent fluid communication between the inside and outside of the reservoir 5110. Figure 31a One arrangement of this feature is shown, illustrating that when the reservoir lid 5114 is closed (the lid is not shown in this image), the compliant portion 5116 engages sealingly with the base 5112 on the outside of the orifice 5138, and no longer allows liquid or air to communicate between the inside and outside of the reservoir 5110 through the orifice 5138. Similarly, the compliant portion 5116 will engage with the base 5112 around the edge of the inclined profile to prevent liquid or air from passing through as... Figure 31b The sloping profile shown connects the interior and exterior of the water reservoir 5110.

[0456] According to another aspect of the present technology, the overflow prevention feature can be configured to prevent overflow, for example via inlet 5118 or outlet 5122, when the user attempts to fill the reservoir 5110 while it is in its closed configuration.

[0457] In one form ( Figure 49 The diagram shows a reservoir without a base 5112. The overflow prevention feature can form one or more airlocks to prevent further liquid from entering the reservoir 5110 when a predetermined maximum volume of liquid is present in the reservoir. In this form, when the reservoir 5110 is filled in its closed configuration via inlet 5118 or outlet 5122, one or more airlocks will form an air closure within the reservoir 5110 that is not replaced by the volume of liquid in the reservoir 5110. Figure 49 In the example shown, when the user simultaneously fills the directional reservoir 5110 with water, the reservoir 5110 is in an orientation that causes the inlet 5118 and outlet 5122 to be normally vertically oriented. The water level 5184 will rise and reach... Figure 49As shown in the diagram, the remaining volume of air in the reservoir 5110 can no longer approach the inlet pipe 5124 or the outlet pipe 5126, and thus can no longer leave the reservoir 510. The reservoir 5110 therefore cannot contain any other volume of water in its internal space. Adding additional water will fill the inlet pipe 5124 or the outlet pipe 5126 depending on whether the reservoir is refilled accordingly through the inlet 5118 or the outlet 5122, and then overflow to the outside of the inlet 5118 or the outlet 5122 accordingly. This will instruct the user that the reservoir 5110 has overflowed.

[0458] Preferably, the volume of water in reservoir 5110 when one or more airlocks prevent any further water inflow into reservoir 5110 is substantially equal to a predetermined maximum liquid volume to be held in reservoir 5110. In some cases, reservoir 5110 may allow further filling of inlet pipe 5124 and / or outlet pipe 5126, although further water inflow into the internal volume is prevented by airlocks. In this case, the volume of liquid in reservoir 5110 and the volume of inlet pipe 5124 and / or outlet pipe 5126 when airlocks are formed can be configured such that, when combined, they substantially equal the predetermined maximum capacity of liquid to be held in reservoir 5110.

[0459] In some cases, such as where the normal orientation of inlet 5118 and outlet 5122 may not be parallel, the user can fill reservoir 5110 in one of multiple orientations when closed. In this case, reservoir 5110 can be configured such that appropriate airlocks can be formed at one or more of the multiple orientations. Airlocks do not need to be formed solely by blocking inlet pipe 5124 and / or outlet pipe 5126. In one form (not shown), one or more airlocks can be formed by blocking any cavity or port that allows fluid communication between the interior and exterior of reservoir 5110. Furthermore, this blocking does not need to be performed by the volume of liquid in reservoir 5110. In some forms, as the volume of liquid increases, it can deform or move another component to form a seal (and thus an airlock) in the reservoir.

[0460] 5.5.2.2.11 Foldable inlet / outlet pipe

[0461] As stated above, any overflow of water from the reservoir 5110, especially through the inlet pipe, is undesirable. One situation in which water overflow may occur is when the reservoir 5110 and / or the humidifier 5000 tilts, for example, when its user (e.g., patient 1000) moves away from its normal operating orientation. Tilting of the reservoir 5110 and / or the humidifier 5000 may occur when the patient 1000 is not receiving treatment, for example, when the humidifier 5000 is being packed up for relocation and / or transport.

[0462] The humidifier 5000 may include one or more foldable tubes, such as foldable inlet tubes and / or foldable outlet tubes. The foldable tube 5208 can be configured in one of several ways, such as an open state (…). Figure 55a (shown in the image) and closed state ( Figure 55b (as shown in the figure). In some cases, foldable tubes can employ multiple degrees of "openness" therein, such as 20%, 40%, 60% or 80% (e.g., as measured by the percentage of the "fully open" cross-sectional area).

[0463] like Figure 55a and Figure 55b As shown, the foldable tube may include a flexible portion 5210, which may be configured to close or open the foldable tube 5208 (the flexible portion 5210 marked by the dashed boundary) between multiple states. Alternatively, or additionally, the foldable tube 5208 may include a rigid portion 5212 to position and / or support the flexible portion 5210. In some forms, the rigid portion 5212 may include approximately half (50%) of the foldable tube 5208 (e.g., in cross-section); however, other portions such as 30%, 40%, 60%, 70% may also be appropriate depending on the specific construction of the foldable tube 5208.

[0464] In one form, the foldable tube can be biased toward a state, such as an open state, and, depending on the occurrence of events, such as water impact on the foldable tube, the orientation of the reservoir 5110 (and thus the orientation of the foldable tube), can take on another state, such as a closed state. In another form, the foldable tube can be biased toward a closed state and further configured to take on an open state when acted upon by a pressurized airflow, for example, when the RPT device 4000 is opened. In some forms, the foldable tube can be deflected toward the final state taken by the foldable tube. That is, if the pressurized gas flow forces the foldable tube into an open state, it can remain in that manner until it is forced into a closed state.

[0465] The foldable tube 5208 can be constructed in any of a number of suitable arrangements, one of which is by overmolding the flexible portion 5210 onto the rigid portion 5212. In other arrangements, the flexible portion 5210 and the right-side portion 5212 can be constructed separately and fastened together, for example, by a snap-fit ​​or one-way permanent latch, or by using other adhesives. In one form, the flexible portion 5210 of the foldable tube 5208 can extend across the entire length of the foldable tube 5208, in which case the flexible portion 5210 and the rigid portion 5212 can engage at or around the periphery of the foldable tube 5208. In another form, the flexible portion 5210 can extend only a portion of the entire length of the foldable tube 5208, such that the flexible portion 5210 and the rigid portion 5212 can engage at or around the periphery of the foldable tube 5208 and engage to buttock each other. Any number of other arrangements of the foldable tube (e.g., geometry, construction, configuration) can be adapted to achieve the same effects as those described in this disclosure.

[0466] exist Figure 56 In the example of the present technology shown, the humidifier cover 5114 is shown to include an inlet pipe 5124 and an outlet pipe 5126. In this example, the inlet pipe 5124 includes a rigid portion 5212 facing the top of the inlet pipe 5124 and a flexible portion 5210 facing the bottom of the inlet pipe 5124. Figure 56 (The shaded portion in the image). Thus, in one arrangement, the flexible portion 5210 can be biased toward an open configuration and folds only when pressure from the volume of water (e.g., from inside the reservoir 5110) acts on the exterior of the flexible portion 5210. In another arrangement, the flexible portion 5210 can be biased toward a closed configuration and opens only when pressurized airflow is delivered from the reservoir inlet 5118 into the reservoir 5110.

[0467] The use of foldable tubes can be advantageous because the volume of the foldable tube can be effectively increased into the interior of the reservoir, thereby reducing the depth of the water volume in the reservoir. This can have two results: one is that it reduces the likelihood of the water volume in the reservoir reaching the inlet and / or outlet pipes, and the other is that it allows the size of the reservoir to be smaller than other possible sizes. Another advantage of foldable tubes is that they can be used as check valves by closing when water arrives and / or opening when a pressurized airflow reaches them.

[0468] 5.5.2.2.12 Holding the clamp

[0469] The reservoir cover 5114 may include a feature by which the reservoir 5110 is held in the reservoir docking member 5130 once the two components, the reservoir 5110 and the reservoir docking member 5130, are engaged with each other. In one arrangement, such as Figures 32 to 33 As shown, the retaining feature may be a protrusion on the storage lid 5114 or a clip 5142. Figures 32 to 33 The image shows a water reservoir 5110 and a reservoir docking member 5130. Here, when the water reservoir 5110 is inserted into the water reservoir docking member 5130, a protrusion on the reservoir cover 5114, or a clamp 5142, 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.

[0470] As described above, the compliant portion 5116 of the reservoir is clamped to allow the reservoir to be inserted into the docking member 5130. The clamping of the compliant portion 5116 allows a portion of the reservoir 5110 to slide into the docking member 5130 and allows the protrusion (or clamp) 5142 to initially slide below the outer edge surface of the docking member 5130 to reach the docking member locking recess 5144. The clamping force applied to the reservoir for insertion can then be released to allow the protrusion (or clamp) 5142 to engage with the docking member locking recess 5144 and the reservoir 5110 to be secured within the docking member 5130. When the reservoir 5110 is secured within the docking member 5130, the compliant portion 5116 is no longer in or is in a reduced clamping state. Similarly, in order to remove the reservoir 5110 from the water storage docking member 5130, the compliant portion 5116 must be clamped to disengage the cap protrusion 5142 from the docking member locking recess 5144.

[0471] The cover protrusion 5142 can be further configured to have, for example, Figure 33 The taper shown is used. This taper can be guided to increase the height away from the insertion direction, so as to gradually increase the interference between the protrusion 5142 and the mating member 5130 during insertion. It will be apparent to those skilled in the art that, in an alternative arrangement, the cap protrusion 5142 may be a recess, and the mating member locking recess 5144 may be a corresponding protrusion. Alternatively, one of any number of retaining features known in the art can be used to achieve the same result as described above.

[0472] 5.5.2.3 Heating plate 5120

[0473] Heating plate 5120 is used to transfer heat to water tank 5110. For example... Figure 14As shown, the heating plate 5120 may form part of the reservoir docking member 5130 and may be positioned on or near the base of the humidifier 5000. The heating plate 5120 may be formed, for example, from a nickel-chromium alloy, stainless steel, or anodized aluminum. The heating plate 5120 may include a heating element 5240, such as a layered heating element as described in PCT patent application publication number WO2012 / 171072, the entire document of which is incorporated herein by reference.

[0474] 5.5.2.4 Humidifier end cap 5300

[0475] In such Figure 59 In one example of the present technology shown, the humidifier 5000 may include a humidifier end cap 5300 configured to direct airflow from the RPT device 4000 to the humidifier outlet 5172. In some arrangements, when humidification is not required and the humidifier 5000 is integrated with the RPT device 4000, the humidifier 5000 may include an end cap replacing the humidifier reservoir 5000. Figure 59 As shown, the humidifier end cap 5300 can be configured to be accommodated in the water reservoir docking part 5130 and interchangeable with the water reservoir 5110.

[0476] In one form, such as Figure 59 and Figure 60 As shown, the humidifier end cap 5300 may include an end cap inlet 5310 for receiving airflow (e.g., from dock outlet 5168); an end cap outlet 5320 for conveying airflow (e.g., to dock air inlet 5170); and an end cap latch 5330 for locking the end cap 5300 to the water reservoir dock 5130 and / or releasing the end cap 5300 from the water reservoir dock 5130.

[0477] End cap 5300 may include identification elements to allow a controller, such as a central controller 4230 or a humidifier controller 5250, to detect its presence (or absence) for example in the storage dock 5130. Storage dock 5130 may include complementary detection elements to detect the presence (or absence) of end cap 5300. In one form, detection of presence or absence by the humidifier controller 5250 may cause the controller to perform another of the following: turn heating plate 5120 on / off; adjust the power output of heating plate 5120; turn hot air circuit 4171 on / off; adjust the power output of hot air circuit 4171; adjust the pressure drop estimation between pressure generator 4140 and patient interface 3000; make user interface elements incapable / capable of being associated with the operation of humidifier 5000, or make data logging / data reporting incapable / capable of being associated with the operation of humidifier 5000. In one form, such as Figure 59 and Figure 60 As shown, the humidifier end cap 5300 may include an identification element (shown as a magnet 5340) disposed on the end cap 5300, such as in the end cap magnet holder 5345. The identification element can be used by a controller to detect the humidifier end cap 5300 via a detection element, such as a Hall effect sensor (not shown) positioned in or near the reservoir dock 5130, such as on a printed circuit board (PCB) in the RPT device 4000.

[0478] One advantage of including the end cap 5300, which includes an identification element, is that it allows for reduced power consumption or customized operation of the humidifier 5000 in which the end cap 5300 is used. Another advantage of the heating plate being open by default and closed by engaging the end cap 5300 is that the heating plate 5120 is de-actuated and access to the heating plate is prevented in the single step of installing the end cap.

[0479] Furthermore, where a manufacturer can produce a system that includes a humidifier 5000 with a reservoir 5110, which includes a system that includes an end cap 5300, it may be advantageous for the manufacturer (e.g., cost) to arrange the identification element on the end cap 5300, since the identification element can lead to additional cost (or time) to whichever component (i.e., reservoir 5110 or end cap 5300) it can be connected to.

[0480] 5.5.3 Humidifier Electrical and Thermal Components 5200

[0481] The humidifier 5000 may include a number of electrical and / or thermal components, such as those listed below.

[0482] 5.5.3.1 Sensor 5270

[0483] The humidifier 5000 may include one or more sensors 5270, such as an air pressure sensor, an air flow sensor, a temperature sensor, and / or a relative humidity sensor. The sensors may generate output signals indicative of the characteristics they measure, and these output signals may be sent to a controller, such as a central controller 4230 and / or a humidifier controller 5250. In some forms, the sensors may be located external to the humidifier 5000 (such as in the air circuit 4170 or in an external module) while still sending output signals to the controller.

[0484] 5.5.3.1.1 Flow Sensor

[0485] In addition to or replacing the flow sensor 4274 installed in the RPT device 4000, the flow sensor can be installed in the humidifier 5000.

[0486] 5.5.3.1.2 Temperature Sensor

[0487] The humidifier 5000 may include a temperature sensor configured to measure the temperature of the heating element 5240 and / or the dynamic temperature of the air in the storage container 5110. In some forms, the humidifier 5000 may also include a temperature sensor for detecting the ambient temperature.

[0488] 5.5.3.1.3 Humidity Sensor

[0489] In one embodiment, the humidifier 5000 may include a humidity sensor for detecting the relative humidity of the surrounding environment. The humidity sensor may be an absolute humidity sensor or a relative humidity sensor. When using a relative humidity sensor, the absolute humidity value can be determined based on measurements of relative humidity and temperature relative to airflow.

[0490] 5.5.3.2 Heating element 5240

[0491] Heating element 5240 may be a heat-generating component such as a resistance-heated rail. A suitable example of heating element 5240 is a layered heating element such as that described in PCT patent application publication number WO2012 / 171072, the entire document of which is incorporated herein by reference.

[0492] 5.5.3.3 Hot Air Circuit 4171

[0493] In addition to or as a replacement for air circuit 4170, hot air circuit 4171 may be used. The temperature of the airflow output from humidifier 5000 may be higher than the ambient temperature. As a result, heat loss may occur from the airflow to the ambient air, thereby increasing the relative humidity of the humidified airflow. In some cases, condensation may occur where the relative humidity increases to 100% RH or close to 100% RH.

[0494] In one embodiment, the humidifier 5000 may include or be connected to a hot air circuit 4171. The use of the hot air circuit 4171 can prevent or reduce condensation of water from the airflow as it travels from the humidifier 5000 to the patient interface 3000. For example, the hot air circuit 4171 can provide heat to the airflow to compensate for heat loss to the surrounding air.

[0495] The hot air circuit 4171 may include one or more sensors, such as a temperature sensor and / or a humidity sensor. The temperature sensor and / or humidity sensor may be used to assist in determining the temperature and / or humidity (absolute and / or relative) in the hot air circuit 4171, for example, at its outlet. In some cases, the hot air circuit 4171 may include a heating element 5240, such as a heating coil, configured to provide heat input to the hot air circuit 4171.

[0496] 5.5.3.4 Humidifier Controller 5250

[0497] According to one arrangement of the present technology, the humidifier may include, for example... Figure 5b The humidifier controller 5250 is shown in the diagram. In one embodiment, the humidifier controller 5250 may be part of a central controller 4230. In another embodiment, the humidifier controller 5250 may be a separate controller that can communicate with the central controller 4230.

[0498] In one form, the humidifier controller 5250 may receive (e.g., from sensor 5270) measurements of airflow and water characteristics (such as temperature, humidity, pressure, and / or flow rate) in the storage 5110 and / or humidifier 5000 as input. The humidity controller 5250 may also be configured to execute or implement humidifier algorithms and / or transmit one or more output signals.

[0499] like Figure 5b As shown, the humidifier controller may include multiple controllers, such as a central humidifier controller 5251, a hot air circuit controller 5254 configured to control the temperature of the hot air circuit 4171, and / or a heating element controller 5252 configured to control the temperature of the hot plate. The hot air circuit controller 5254 may receive input from one or more sensors to control the operation of the hot air circuit 4171. As an example, the hot air circuit controller 5254 may receive the temperature and relative humidity of the humidifying airflow from sensor 5270 to adjust the heat output through the hot air circuit 4171.

[0500] 5.6 Glossary

[0501] For the purposes of this disclosure, one or more of the following definitions may be applied in some forms of this technology. Alternative definitions may be applied in other forms of this technology.

[0502] 5.6.1 Overview

[0503] Air: Air includes breathable gases, such as atmospheric air which is replenished with oxygen.

[0504] Continuous positive airway pressure (CPAP): CPAP therapy refers to the application of air supply into the airway under a continuously positive pressure relative to the atmosphere.

[0505] 5.6.2 Aspects of the RPT device

[0506] Air circuit: A conduit or tube constructed and arranged in use to deliver an air supply between an upstream component (such as an RPT device) and a downstream component (such as a patient interface). Specifically, the air circuit may be fluidly connected to the outlet of a pneumatic block and the patient interface. The air circuit may be referred to as an air delivery tube. In some cases, there may be separate branches for the inhalation and exhalation circuits. In other cases, a single branch is used.

[0507] 5.6.3 Humidifier

[0508] Water reservoir: A water reservoir (also commonly referred to as a water tank, humidifier tank, or humidifier storage tank) is a chamber constructed to contain a large quantity / volume of liquid (e.g., water) for humidifying an airflow.

[0509] 5.6.4 Materials

[0510] Silicone or silicone elastomer: A synthetic rubber. In this specification, references to silicone refer to liquid silicone rubber (LSR) or compression-molded silicone rubber (CMSR). One commercially available form of LSR is SILASTIC manufactured by Dow Corning (included in a range of products sold under that trademark). Another manufacturer of LSR is Wacker. Unless otherwise specified, preferred forms of LSR have an indentation hardness ranging from about 35 to about 45 on a Shore A (or Class A) scale, as measured using ASTM D2240.

[0511] Polycarbonate: a normally transparent thermoplastic polymer of bisphenol A carbonate.

[0512] 5.7 Other Remarks

[0513] This patent document discloses a portion of material that is protected by copyright. Because it appears in patent documents or records of the Patent and Trademark Office, the copyright holder does not object to any reproduction by anyone who makes this patent document or disclosure, but retains all copyrights.

[0514] Unless the context explicitly indicates otherwise and provides a range of values, it should be understood that each intermediate value between the upper and lower limits of the range up to the tenth unit of the lower limit, as well as any other values ​​or intermediate values ​​within the range, are included in this technique. The upper and lower limits of these intermediate ranges, which may be independently included, are included in this technique, subject to any specific exclusions within the range. In cases where the range includes one or two limitations, ranges excluding one or both of these included limitations are also included in this technique.

[0515] Furthermore, where values ​​or multiple values ​​are expressed herein as part of the implementation of this technology, it should be understood that these values ​​may be approximate unless otherwise stated, and these values ​​may be used to any suitable significant figures to the extent permitted or required by the particular technical application.

[0516] Unless otherwise stated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the technique pertains. While any methods and materials identical or equivalent to those described herein may be used for the implementation and testing of this technique, a limited number of exemplary methods and materials are described herein.

[0517] When a particular material is considered preferably used to construct a component, an obvious alternative material with similar properties may be used as a replacement. Furthermore, unless otherwise stated, any and all of the materials described herein are to be understood as capable of being manufactured and equally capable of being manufactured together or separately.

[0518] It must be noted that, as used herein and in the claims, the singular forms “a,” “an,” and “the” include their plural equivalents unless the context clearly indicates otherwise.

[0519] All disclosures described herein are incorporated herein by reference, and such disclosures describe methods and / or materials of the disclosed subject matter. The disclosures described herein are provided solely for use with respect to those disclosed prior to the filing date of this application. Nothing herein is construed as disqualifying the present technology from having a prior invention prior to that disclosure. Furthermore, the date of the disclosure provided may differ from the actual disclosure date, which requires independent verification.

[0520] Furthermore, in interpreting this disclosure, all terms should be interpreted in the broadest and most reasonable manner consistent with the context. Specifically, the terms “comprises” and “comprising” should be interpreted as referring to an element, component, or step in a non-exclusive manner, indicating that the element, component, or step may appear, be used, or be combined with other elements, components, or steps not expressly mentioned.

[0521] The headings used in the detailed description are included for the reader's convenience only and should not be used to limit the subject matter found throughout the disclosure or claims. The headings should not be used to interpret the scope of the claims or to limit the claims.

[0522] While specific examples are used to describe the techniques described herein, it should be understood that these examples are solely for illustrating the principles and applications of the techniques. In some cases, terms and symbols may imply specific details not required for implementing the techniques. For example, while the terms "first" and "second" may be used, they are not intended to indicate an arbitrary order but rather to distinguish between different elements unless otherwise specified. Furthermore, while process steps in a methodology may be described or explained in sequence, this order is not mandatory. Those skilled in the art will recognize that this sequence can be modified and / or that the scheme can be performed simultaneously or even concurrently.

[0523] Therefore, it should be understood that numerous modifications and alternative configurations can be envisioned for the illustrated examples without departing from the spirit and scope of the technology.

[0524] Although the invention has been described in conjunction with examples currently considered to be the most practical and preferred, it should be understood that the invention is not limited to the disclosed examples, but rather is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Furthermore, the multiple examples described above can be implemented in combination with other examples; for example, an aspect of one example can be combined with an aspect of another example to implement yet another example. Moreover, each individual feature or component of any given component can constitute another example.

[0525] 5.8 Other Technical Examples

[0526] Example 1: A device for humidifying airflow, comprising:

[0527] Heating plate;

[0528] A chamber in fluid communication with the airflow; and

[0529] The storage device includes a conductive portion that is thermally bonded to a heating plate.

[0530] This device is designed to alter the initial pressure of the airflow in the chamber to change the level of thermal bonding between the conductive part and the heating plate.

[0531] Example 2, the apparatus as described in Example 1, wherein the storage also includes an inlet and an outlet.

[0532] Example 3, the apparatus as described in Example 2, wherein the thermal bonding is in a first direction substantially perpendicular to the surface of the conductive portion.

[0533] Example 4: The device described in any of Examples 1-3 is further configured to change the magnitude of the force between the conductive part and the heating plate in the first direction when the first pressure changes.

[0534] Example 5: A device as described in any of Examples 1-4, wherein the chamber is part of a storage unit.

[0535] Example 6: The apparatus described in any of Examples 1-5, wherein the chamber further includes a compliant portion.

[0536] Example 7: An apparatus as described in any of Examples 1-6, wherein the apparatus further includes a docking member configured to receive a storage container, and the docking member includes a heating plate.

[0537] Example 8, the apparatus as described in Example 7, wherein the docking member further includes a cavity having a top portion and a bottom portion, the bottom portion having a heating plate positioned thereon, the cavity being configured to retain at least a portion of the reservoir therein.

[0538] Example 9, the apparatus as described in Example 8, wherein the compliant portion is pressed to allow the reservoir to be inserted into the cavity of the mating member.

[0539] Example 10, the apparatus described in any of Examples 8 or 9, wherein the top portion of the cavity is movable between an open configuration and a closed configuration to facilitate insertion of a reservoir into the cavity.

[0540] Example 11, the apparatus described in any of Examples 6-10, wherein the compliant portion is configured to adjust its size when a first pressure changes to alter the level of thermal bonding between the heating plate and the conductive portion.

[0541] Example 12, an apparatus according to any one of Examples 1-11, wherein the reservoir further includes a base and a lid, the base being configured to retain the volume of liquid and including a conductive portion.

[0542] Example 13, the device as in Example 12, wherein the base and the cover are pivotally connected together.

[0543] Example 14: A device according to any one of Examples 12-13, wherein the compliant portion forms a seal between the base and the cover.

[0544] Example 15, an apparatus according to any one of Examples 12-14, wherein the reservoir further includes a latch to secure the base to the cover.

[0545] Example 16, an apparatus according to any one of Examples 7-15, wherein the storage device further includes at least one handle for facilitating connection of the storage device to the docking member.

[0546] Example 17. An apparatus according to any one of Examples 8-16, wherein the reservoir further includes a retaining clamp adapted to engage with a recess on the docking member to retain the reservoir in a cavity of the docking member.

[0547] Example 18, an apparatus according to any one of Examples 7 to 17, wherein the reservoir is configured to prevent refilling of the reservoir when the reservoir is coupled to the docking member.

[0548] Example 19, the apparatus according to Example 18, wherein when the storage is coupled to the docking member, at least a portion of the storage is prevented from opening.

[0549] Example 20, an apparatus according to any one of Examples 18 or 19, wherein the reservoir includes a refill cap.

[0550] Example 21: The apparatus according to any one of Examples 1-20 further includes an overflow protection element configured to prevent the reservoir from being filled to a predetermined maximum capacity of water.

[0551] Example 22, the apparatus according to Example 21, wherein the overflow protection element includes at least one hole formed in the wall of the reservoir, the at least one hole defining the outflow path of water when the predetermined maximum capacity of water is exceeded.

[0552] Example 23, according to the apparatus of Example 21, wherein the overflow protection element includes an inclined profile in the side profile of the wall of the reservoir, the inclined profile defining the outflow path of water when a predetermined maximum water capacity is exceeded.

[0553] Example 24: A method for altering the thermal contact between a heating plate and a reservoir in a humidification system to humidify airflow, the method comprising:

[0554] The pressure of the airflow in the reservoir that is in fluid communication with the airflow is changed to change the force between the heating plate and the reservoir.

[0555] Example 25: A device for humidifying airflow, comprising:

[0556] Heating plate; and

[0557] The storage device includes:

[0558] An inlet for receiving airflow;

[0559] Exports; and

[0560] The conductor portion that is in thermal contact with the heating plate

[0561] Furthermore, the device is configured to change the pressure of the airflow in the reservoir to alter the force between the heating plate and the conductive part in the direction of thermal contact.

[0562] Example 26, the apparatus as described in Example 25, further includes a docking element capable of connecting to a storage device.

[0563] Example 27, the apparatus as described in Example 26, wherein the mating member is configured to restrict the opening of the reservoir in the direction of thermal contact.

[0564] Example 28: A reservoir configured to contain a volume of liquid for humidifying and pressurizing an airflow, comprising:

[0565] The base portion, which includes the conductive portion;

[0566] The lid section includes an inlet and an outlet; and

[0567] The part that conforms;

[0568] The base portion and the cover portion are pivotally joined, and when configured to be pivotally joined, they are in an open configuration and a closed configuration, and when the reservoir is in a closed configuration, a seal seals the base portion and the cover portion.

[0569] Example 29, a storage device as described in Example 28, wherein the compliant portion includes an outlet pipe and a partition configured to connect to an inlet pipe.

[0570] Example 30: A device for humidifying airflow, comprising:

[0571] Heating plate; and

[0572] The storage device includes:

[0573] Entrance

[0574] exit;

[0575] The part of compliance; and

[0576] The conductor portion that is in thermal contact with the heating plate

[0577] The device is designed to change the thermal bonding level between the conductive part and the heating plate by changing the height of the compliant part.

[0578] Example 31, a device as described in Example 30, wherein the device is configured such that thermal bonding occurs in a first direction substantially perpendicular to the surface of the conductive portion.

[0579] Example 32: A method for changing the thermal bonding grade in a humidification device, the method comprising:

[0580] (i) thermally bonding the heating plate to the conductive portion of the reservoir; and

[0581] (ii) Change the height of the compliant portion of the reservoir to change the level of thermal bonding between the conductive portion and the heating plate.

[0582] Example 33: A water storage tank for a humidification device, the storage tank comprising:

[0583] Multiple walls that form a cavity to hold a predetermined maximum capacity of water;

[0584] An inlet pipe, which is used to receive the air supply into the reservoir, includes an inner end and an outer end;

[0585] as well as

[0586] An outlet pipe, used to deliver air supply from the reservoir, includes an inner end and an outer end;

[0587] The inlet pipe and outlet pipe are configured such that, when the reservoir contains a predetermined maximum capacity of water, regardless of the orientation of the reservoir, at least one of the inner or outer ends of the inlet pipe and at least one of the inner or outer ends of the outlet pipe exceed the predetermined maximum capacity of water.

[0588] Example 34: A water storage tank for a humidification device, the storage tank comprising:

[0589] Inlet pipe used to receive the air supply into the reservoir;

[0590] An outlet pipe used to convey the air supply from the storage tank;

[0591] At least one of the inlet pipe or outlet pipe can adopt at least two configurations.

[0592] Example 35, a water storage device as described in Example 34, wherein at least two configurations include an opening configuration and a closing configuration.

[0593] Example 36, a water storage device as described in Example 35, wherein at least one of the inlet pipe or outlet pipe is foldable to form a closed structure.

[0594] 5.9. List of reference numerals in attached figures

[0595] Label feature item

[0596] 1000 patients

[0597] 3000 patient interfaces

[0598] 3100 Sealing Formation Structure

[0599] 3200 Pressure Chamber

[0600] 3300 stable structure

[0601] 3600 connection port

[0602] 4000 RPT unit

[0603] 4010 Outer Housing

[0604] 4020 Pneumatic Block

[0605] 4100 Pneumatic Components

[0606] 4110 Air Filter

[0607] 4112 Inlet air filter

[0608] 4114 Exit air filter

[0609] 4120 silencer

[0610] 4122 Inlet silencer

[0611] 4124 Export Silencer

[0612] 4140 Pressure Generator

[0613] 4142 Blower

[0614] 4144 motor

[0615] 4160 Anti-backflow valve

[0616] 4170 Air Circuit

[0617] 4171 Hot Air Circuit

[0618] 4180 Supplement oxygen

[0619] 4200 electrical components

[0620] 4230 Central Controller

[0621] 4240 Treatment Equipment Controller

[0622] 4270 converter

[0623] 4274 Flow Sensor

[0624] 4300 Algorithm

[0625] 5000 Humidifier

[0626] 5100 Humidifier Mechanical Components

[0627] 5110 Water Storage Unit

[0628] 5112 Memory base

[0629] 5114 Storage lid

[0630] 5116 Compliance Part

[0631] 5117 carrier

[0632] 5118 Storage Entry

[0633] 5120 heating plate

[0634] 5122 Storage outlet

[0635] 5124 Inlet Pipe

[0636] 5125 Inlet pipe inner end

[0637] 5126 Export Pipe

[0638] 5127 Outlet pipe inner end

[0639] 5128 inner end wall

[0640] 5130 Water Storage Unit Connection Fittings

[0641] 5132 First mating part seal

[0642] 5134 Second mating part seal

[0643] 5136 Rotating Blade

[0644] 5138 holes

[0645] 5139 Slanted Profile

[0646] 5140 Water Fill Indicator Marker

[0647] 5140_a Water fill indicator mark

[0648] 5140_b Water fill indicator mark

[0649] 5141_1 Water level at the predetermined maximum capacity of the water

[0650] 5141_2 Water level at the threshold volume of water

[0651] 5142 Maintain protrusion

[0652] 5144 Locking Recess for Connecting Parts

[0653] 5146 base upper body

[0654] 5148 Base Plate

[0655] 5150 Sealing Element

[0656] 5152 Conductor Plate

[0657] 5154 Handle recess

[0658] 5156 Handle Recess

[0659] 5158 Hinges

[0660] 5159 Hinge recess

[0661] 5160 docking cavity

[0662] 5166 Hand gripper

[0663] 5168 Connecting Part Air Outlet

[0664] 5170 Connecting Part Air Inlet

[0665] 5172 Humidifier outlet

[0666] 5174 Base

[0667] 5176 Top

[0668] 5178 Compliance Part

[0669] 5180 lid

[0670] 5182 Water

[0671] 5184 water level

[0672] 5186 Storage latch

[0673] 5192 baffle

[0674] 5194 Support spokes

[0675] 5195 Traffic Booster

[0676] 5196 Positioning Section

[0677] 5197 Seals

[0678] 5198 Deflection Part

[0679] 5200 thermal components

[0680] 5202 Middle section

[0681] 5206 Wall section

[0682] 5208 Foldable Tube

[0683] 5210 Flexible Part

[0684] 5212 Rigid Part

[0685] 5220 Rotary Guide

[0686] 5222 Rotary stop

[0687] 5224 Inner lip area

[0688] 5226 Outer lip

[0689] 5240 heating element

[0690] 5250 Humidifier Controller

[0691] 5251 Central Humidifier Controller

[0692] 5252 Heating Element Controller

[0693] 5254 Hot Air Circuit Controller

[0694] 5270 sensor

[0695] 5300 Humidifier End Cap

[0696] 5310 End Cap Inlet

[0697] 5320 End Cap Outlet

[0698] 5330 End Cap Latch

[0699] 5340 Magnet

[0700] 5345 End Cap Magnet Retainer

Claims

1. A water reservoir for a respiratory pressure therapy device, the respiratory pressure therapy device including a pressure generator integrated in the respiratory pressure therapy device configured to supply an airflow with positive pressure and a device configured to humidify the airflow, the water reservoir being configured to be removably locked to a docking part of the device and configured to contain a volume of water and increase the humidity of the airflow, the water reservoir comprising: The base is configured to contain a volume of liquid and includes a conductive portion, wherein the conductive portion is configured to be thermally connected to a heating plate provided to the docking member when the water reservoir is removably fixed to the docking member. The cover is configured to connect to the base; and A protrusion configured to mate with a recess in the docking member to hold the water reservoir to the docking member. The cover is configured and arranged to receive downward forces, which allows the protrusion to engage the water reservoir by securing it to and / or disengaging it from the docking member.

2. The water storage device according to claim 1, wherein, The cover is configured to receive the downward force to disengage from the docking member and engage the water reservoir.

3. The water storage device according to claim 1, wherein, The cover is configured to be movable relative to the base and / or the docking member when the downward force is applied, so as to allow the water reservoir to be inserted into the docking member and / or disengaged from the docking member and removed from the water reservoir.

4. The water storage device according to claim 1, wherein, The cover is configured to be movable relative to the base when the downward force is applied.

5. The water reservoir of claim 1, further comprising a compliant portion disposed between the base and the cover and configured to press firmly when the downward force is applied.

6. The water storage device according to claim 5, wherein, The compliant portion is connected to the base or the cover.

7. The water storage device according to claim 1, wherein, The water reservoir includes a handle, and the downward force is applied to the handle.

8. The water storage device according to claim 1, wherein, The cap is movably connected to the base to allow the reservoir to switch between an open and closed configuration, and includes a resilient portion between the cap and the base, wherein the resilient portion is compressible, and includes at least one handle comprising an upper handle on the cap and a lower handle on the base, wherein the upper and lower handles are graspable by a patient to push the cap and the base toward each other, thereby compressing the resilient portion to engage or disengage the reservoir from the docking element.

9. The water storage device according to claim 8, wherein, The base and the cover are pivotally connected together.

10. The water storage device according to claim 9, wherein, The lid is pivotally connected to the base via a hinge to allow the water reservoir to switch between the open and closed configurations.

11. The water storage device according to claim 10, wherein, The at least one handle is located away from the hinge.

12. The water storage device according to claim 8, wherein, The surface of the upper handle is provided with a handle grip and / or the surface of the lower handle is provided with a handle grip.

13. The water storage device according to claim 8, wherein, The cover includes a protrusion configured to engage with the recess of the docking member to retain the water reservoir in the cavity of the docking member, and wherein the resilient portion forms a seal between the base and the cover.

14. The water storage device according to claim 13, wherein, The water reservoir is configured such that when a user grips the water reservoir via the at least one handle, a force compressing the elastic portion can be applied to the water reservoir.

15. The water storage device according to claim 8, wherein, The docking member is configured to include a cavity having a top portion and a bottom portion, the bottom portion having a heating plate located thereon, and the cavity being configured to receive a portion of the water reservoir therein.

16. The water storage device according to claim 15, wherein, The at least one handle is located on a portion of the water reservoir that is not received by the cavity.

17. The water storage device according to claim 8, wherein, The cover includes an inlet and an outlet, which are configured to engage with corresponding outlets and inlets of the docking member.

18. The water reservoir of claim 8, further comprising a latch for securing the base and the cover together, and wherein, The latch is configured to restrict relative movement of the cover and the base in only one direction to prevent separation of the cover and the base, while allowing further compression of the resilient portion.

19. A breathing pressure device comprising a pressure generator integrated within the breathing pressure device for supplying an airflow at a positive pressure and a means for humidifying the airflow, the means for humidifying the airflow comprising: Including the mating parts for the heating plate; and The water storage device according to any one of claims 1 to 18.

20. The breathing pressure device according to claim 19, wherein, The docking member includes a cavity for receiving at least a portion of the water reservoir therein.

21. The breathing pressure device according to claim 19, wherein, The docking component includes a docking air outlet for conveying the airflow to the inlet of the water reservoir and a docking air inlet for receiving the airflow that has been humidified in the water reservoir.

22. The breathing pressure device according to claim 19, wherein, The heating plate is spring-loaded or a spring-heated plate.

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