Control of a respiratory assistance device

Abstract

A respiratory assist device is disclosed. The device may include a battery and a controller. The battery may be configured to supply power to at least one component of the device. The at least one component may be one or more of the following: a humidifier heater, a flow generator, or a conduit; the conduit may include a conduit heater. The controller may be configured to control at least one component of the device to discharge the battery to a predetermined charge level.

Description

[0001] Divisional application This application is a divisional application of application number 202480015526.9, filed on February 12, 2024, entitled "Control of respiratory assistive devices". Technical Field

[0002] This disclosure relates to the control of battery discharge in respiratory assist devices. Background Technology

[0003] In various environments, such as hospitals, medical facilities, home care, or home settings, respiratory assist devices are used to deliver a flow of gas to a patient. Respiratory assist devices (e.g., mobile therapy devices) may include an oxygen inlet that enables the respiratory device to deliver supplemental oxygen along with the gas flow. Respiratory assist devices may also (or alternatively) include a humidification device that enables the respiratory device to deliver heated and humidified gas. Respiratory assist devices may allow for the regulation and control of gas flow characteristics. These characteristics may include, for example, flow rate, temperature, gas concentration (such as supplemental oxygen concentration), humidity, and pressure.

[0004] Patients with a variety of health conditions and diseases can benefit from respiratory support (e.g., respiratory therapy). In at least one form, respiratory therapy can be oxygen therapy. For example, patients with chronic obstructive pulmonary disease (COPD), pneumonia, asthma, bronchopulmonary dysplasia, heart failure, cystic fibrosis, sleep apnea, lung disease, respiratory trauma, acute respiratory distress, and / or other conditions or diseases can benefit from respiratory therapy. Similarly, patients receiving pre- and post-operative oxygen delivery can also benefit from respiratory therapy. Summary of the Invention

[0005] In the first aspect, the invention can be broadly described as relating to a respiratory assist device comprising: A battery, configured to supply power to at least one component of the device. At least one component includes one or more of the following: Humidifier heater Flow generator The catheter includes a catheter heater. A controller configured to control at least one component of a device to discharge a battery to a predetermined charge level.

[0006] In some configurations, the controller communicates with the battery, and the controller is configured to determine one or more of the following: the battery's state of charge, the battery's electrical characteristics, the battery's chemical characteristics, and / or the battery's physical characteristics.

[0007] In some configurations, the controller is provided with one or more of the following: battery state of charge, battery electrical characteristics, battery chemical characteristics, and / or battery physical characteristics.

[0008] In some configurations, the battery includes a battery controller that communicates with the device's controller, and the battery controller is configured to determine one or more of the following: the battery's state of charge, the battery's electrical characteristics, the battery's chemical characteristics, and / or the battery's physical characteristics.

[0009] In some configurations, the predetermined power level is an electrical characteristic (optionally, voltage).

[0010] In some configurations, electrical characteristics indicate the battery's state of charge.

[0011] In some configurations, a predetermined charge level indicates the battery's state of charge.

[0012] In some configurations, the predetermined power level is a predetermined state of charge, and the controller is configured to control the battery to discharge to the predetermined state of charge.

[0013] In some configurations, the predetermined power level is based at least in part on at least one battery discharge configuration.

[0014] In some configurations, at least one battery discharge configuration includes a shipping configuration, wherein in the shipping configuration, the predetermined charge level is the shipping configuration charge level.

[0015] In some configurations, the shipment configuration has a power level of approximately 30%.

[0016] In some configurations, at least one battery discharge configuration includes a storage configuration, wherein in the storage configuration, a predetermined charge level is the storage configuration charge level.

[0017] In some configurations, the storage is configured with a power level of approximately 60%.

[0018] In some configurations, specifically in storage configurations, the predetermined power level is based on the expected storage duration.

[0019] In some configurations, the predetermined power level is the first storage configuration power level when the expected storage duration is approximately 6 months to approximately 12 months.

[0020] In some configurations, the first storage is configured with a power level of approximately 30%.

[0021] In some configurations, when the expected storage duration is greater than approximately 12 months, the predetermined power level is the power level of the second storage configuration.

[0022] In some configurations, the second storage is configured with a power level of approximately 60%.

[0023] In some configurations, users can access the desired storage duration via the user interface.

[0024] In some configurations, when a user selects a storage configuration, the device prompts (optionally via a display) the user interface to enter the expected storage duration.

[0025] In some configurations, at least one battery discharge configuration includes a recall configuration, wherein in the recall configuration, the predetermined charge level is the recall configuration charge level.

[0026] In some configurations, the recall configuration is based on a battery level of approximately 10%.

[0027] In some configurations, at least one battery discharge configuration includes a disposal configuration, wherein in the disposal configuration, a predetermined charge level is the disposal configuration charge level.

[0028] In some configurations, the battery level is set to approximately 0%.

[0029] In some configurations, the controller discharges the battery at a predetermined discharge rate via at least one component of the control device.

[0030] In some configurations, the predetermined discharge rate is the C-rate.

[0031] In some configurations, the predetermined discharge rate is based on the battery discharge configuration.

[0032] In some configurations, when at least one battery discharge configuration is a storage configuration or a shipping configuration, the predetermined discharge rate is a first discharge rate.

[0033] In some configurations, when at least one battery discharge configuration is a recall configuration or a disposal configuration, the predetermined discharge rate is a second discharge rate.

[0034] In some configurations, the second discharge rate is lower than the first discharge rate.

[0035] In some configurations, the controller is configured to control the discharge of the battery to maintain the battery charge level at a predetermined level.

[0036] In some configurations, the power level indicates the battery's state of charge.

[0037] In some configurations, the battery charge level is based on one or more of the following: The electrical characteristics of a battery The chemical characteristics of batteries Physical characteristics of batteries.

[0038] In some configurations, the determined charge level indicating the battery charge level is configured to be updated continuously or periodically.

[0039] In some configurations, controlling at least one component includes one or more of the following: Activate and / or deactivate at least one component Control the power draw of at least one component. Control the output of at least one component.

[0040] In some configurations, the control of at least one component is based on a battery discharge configuration.

[0041] In some configurations, the controller is configured as follows: Activate at least one component, increase the power extraction of at least one component, and / or increase the output of at least one component, and then, Deactivate at least one component, reduce the power draw of at least one component, and / or reduce the output of at least one component. Optionally, the controller can repeatedly activate and / or increase and deactivate and / or decrease.

[0042] In some configurations, after the controller activates at least one component, increases the power draw of at least one component, and / or increases the output of at least one component, the controller is configured to maintain the output of at least one component (optionally for a predetermined amount of time).

[0043] In some configurations, after the controller deactivates at least one component, reduces the power draw of at least one component, and / or reduces the output of at least one component, the controller is configured to maintain the output of at least one component (optionally for a predetermined amount of time).

[0044] In some configurations, the controller is configured to control the output of the flow generator to discharge the battery to a predetermined charge level.

[0045] In some configurations, the flow generator includes a blower, which in turn includes a motor.

[0046] In some configurations, the output of the flow generator is one or more of the following: the speed of the motor, the flow rate of the gas supplied by the flow generator, and the pressure supplied by the flow generator.

[0047] In some configurations, the controller is configured to control the output of the flow generator to: To achieve the predetermined output of the flow generator, or It is within the predetermined output range of the flow generator, or It is above the predetermined output of the flow generator.

[0048] In some configurations, the predetermined output is greater than the treatment output of the flow generator, which is the output when the device is providing treatment to the user.

[0049] In some configurations, the flow generator is designed to output motor speeds ranging from approximately 5,000 RPM to approximately 20,000 RPM, or from approximately 23,000 RPM to approximately 26,000 RPM.

[0050] In some configurations, the predetermined output is a motor speed of approximately 20,000 RPM.

[0051] In some configurations, the controller is configured to control the output of the flow generator to repeatedly (optionally periodically) increase and decrease the output of the flow generator (optionally within a predetermined output range of the flow generator).

[0052] In some configurations, after the controller increases the output of the flow generator, the controller is configured to maintain the output of the flow generator (optionally for a predetermined amount of time) before subsequently reducing the output of the flow generator.

[0053] In some configurations, after the controller reduces the output of the flow generator, the controller is configured to maintain the output of the flow generator (optionally for a predetermined amount of time) before subsequently increasing the output of the flow generator.

[0054] In some configurations, the controller is configured to control the output of the flow generator to increase the output of the flow generator to: The first predetermined flow generator output, It is within the output range of the first predetermined flow generator, or It is above the output of the first predetermined flow generator, and The output of the flow generator was then reduced to: The second predetermined flow generator output, It is within the output range of the second predetermined flow generator, or It is the output of the second predetermined flow generator.

[0055] In some configurations, reducing the output of the flow generator includes allowing the flow generator motor to idle or controlling the flow generator output to reduce it.

[0056] In some configurations, the flow generator reduces the braking system of the motor configured with the braking flow generator.

[0057] In some configurations, the braking system is configured to reduce the output of the flow generator (optionally by reducing the motor speed).

[0058] In some configurations, the controller is configured to control the power delivered to the humidifier heater and / or duct heater.

[0059] In some configurations, the power delivered to the humidifier heater and / or duct heater is controlled by adjusting the current or voltage delivered to the humidifier heater and / or duct heater.

[0060] In some configurations, the power delivered to the humidifier heater and / or duct heater is controlled by a digital control scheme.

[0061] In some configurations, the controller is configured to control the humidifier heater and / or duct heater via pulse width modulation.

[0062] In some configurations, the controller is configured to signal the humidifier heater and / or duct heater to control the power delivered to the humidifier heater and / or duct heater.

[0063] In some configurations, the controller is configured to control the power delivered to the humidifier heater and / or duct heater to discharge the battery to a predetermined charge level.

[0064] In some configurations, the controller is configured to control the power delivered to the humidifier heater and / or duct heater to achieve a predetermined output for the humidifier heater and / or duct heater.

[0065] In some configurations, the controller is configured to control the power delivered to the humidifier heater and / or duct heater to achieve a predetermined heater power, or within a predetermined heater power range, or above a predetermined heater power.

[0066] In some configurations, the predetermined heater power is greater than the treatment power, which is the power of the heater when the device provides treatment to the user.

[0067] In some configurations, the predetermined heater power corresponds to the user's safety threshold.

[0068] In some configurations, the controller is configured to control the power delivered to the humidifier heater and / or the power delivered to the duct heater to repeatedly (optionally periodically) increase and decrease the power delivered to the humidifier heater and / or the power delivered to the duct heater (optionally within a target gas temperature range and / or a target humidifier heater temperature range and / or a target duct heater temperature range).

[0069] In some configurations, after the controller increases the power delivered to the humidifier heater and / or the duct heater, the controller is configured to maintain the power delivered to the humidifier heater and / or the duct heater before subsequently reducing the power delivered to the humidifier heater and / or the duct heater.

[0070] In some configurations, after the controller reduces the power delivered to the humidifier heater and / or the duct heater, the controller is configured to maintain the power delivered to the humidifier heater and / or the duct heater (optionally for a predetermined amount of time) before subsequently increasing the power delivered to the humidifier heater and / or the duct heater.

[0071] In some configurations, the controller is configured to control the power delivered to the humidifier heater and / or the power delivered to the duct heater to increase the power delivered to the humidifier heater and / or the power delivered to the duct heater in order to: The first predetermined power delivered to the humidifier heater and / or the first predetermined power delivered to the duct heater, Within a first predetermined power range delivered to the humidifier heater and / or within a first predetermined power range delivered to the duct heater, or Above the first predetermined power delivered to the humidifier heater and / or above the first predetermined power delivered to the duct heater, and Subsequently, the power delivered to the humidifier heater and / or the power delivered to the duct heater is reduced to: A second predetermined power delivered to the humidifier heater and / or a second predetermined power delivered to the duct heater. Within the second predetermined power range delivered to the humidifier heater and / or within the second predetermined power range delivered to the duct heater, or Under a second predetermined power delivered to the humidifier heater and / or under a second predetermined power delivered to the duct heater.

[0072] In some configurations, the controller is configured to control the power delivered to the humidifier heater and / or duct heater to achieve a target gas temperature, wherein the target gas temperature is the temperature of the gas at one or more locations, including: The humidifier's inlet, The outlet of the humidifier, Location within the catheter, The position of the patient end of the catheter.

[0073] In some configurations, the device includes at least one temperature sensor configured to measure the temperature of gas at one or more locations.

[0074] In some configurations, the target gas temperature is higher than the treatment gas temperature when the device is used to provide treatment to the user.

[0075] In some configurations, the target gas temperature corresponds to the user's safety threshold.

[0076] In some configurations, the controller is configured to control the power delivered to the humidifier heater duct to achieve a target humidifier heater temperature and / or control the power delivered to the duct heater to achieve a target duct heater temperature, optionally with the target humidifier heater temperature and / or the target duct heater temperature being less than approximately 60 degrees Celsius.

[0077] In some configurations, the controller is configured to control the power delivered to the humidifier heater to achieve a target humidifier heater temperature range and / or control the power delivered to the duct heater to achieve a target duct heater temperature range, wherein the target humidifier heater temperature range and / or the target duct heater temperature range is approximately 40 degrees Celsius to approximately 60 degrees Celsius.

[0078] In some configurations, the device includes at least one heater temperature sensor configured to measure the temperature of the humidifier heater and / or the temperature duct heater.

[0079] In some configurations, when the device is providing treatment to the user, the temperature of the humidifier heater and / or the duct heater is higher than the temperature of the treatment heater.

[0080] In some configurations, the temperature of the humidifier heater and / or the duct heater corresponds to a safety threshold for the user.

[0081] In some configurations, the controller is configured to control one or the target gas temperature and / or one or the target humidifier heater temperature and / or one or the target duct heater temperature to repeatedly (optionally periodically) increase and decrease (optionally within one or the target gas temperature range and / or one or the target humidifier heater temperature range and / or one or the target duct heater temperature range).

[0082] In some configurations, after the controller increases the target gas temperature and / or the target humidifier heater temperature and / or the target duct heater temperature, the controller is configured to maintain the target gas temperature and / or the target humidifier heater temperature and / or the target duct heater temperature before subsequently decreasing it.

[0083] In some configurations, after the controller reduces the target gas temperature and / or the target humidifier heater temperature and / or the target duct heater temperature, the controller is configured to maintain the target gas temperature and / or the target humidifier heater temperature and / or the target duct heater temperature (optionally for a predetermined amount of time) before subsequently increasing the target gas temperature and / or the target humidifier heater temperature and / or the target duct heater temperature.

[0084] In some configurations, the controller is configured to control the target gas temperature and / or the target heater temperature to increase the target gas temperature and / or the target heater temperature to: The first predetermined target gas temperature and / or the first predetermined target humidifier heater temperature and / or the first predetermined target duct heater temperature Within the first predetermined target gas temperature range and / or within the first predetermined target humidifier heater temperature range and / or within the first predetermined target duct heater temperature range, or Above the first target gas temperature and / or above the first target humidifier heater temperature and / or above the first target duct heater temperature, and The output of the flow generator was then reduced to: The second predetermined target gas temperature and / or the second predetermined target humidifier heater temperature and / or the second predetermined target duct heater temperature Within the second predetermined target gas temperature range and / or within the second predetermined target humidifier heater temperature range and / or within the second predetermined target duct heater temperature range, or Below the second target gas temperature and / or below the second target humidifier heater temperature and / or below the second target duct heater temperature.

[0085] In some configurations, the controller is configured to shut down the device once the battery has been discharged to a predetermined charge level.

[0086] In some configurations, the device includes at least one display that communicates with the controller.

[0087] In some configurations, the controller is configured to control at least one display to show a notification that the battery is discharging.

[0088] In some configurations, the controller is configured to control at least one display to show the battery discharge configuration.

[0089] In some configurations, the device includes a user interface (optionally, the user interface is a touch interface that is part of at least one display).

[0090] In some configurations, users can initiate battery discharge to a predetermined charge level via the user interface.

[0091] In some configurations, the device is configured to allow the user to initiate battery discharge to a predetermined charge level based on one or more of the following: The user provides credentials associated with permission to initiate battery discharge to one or a predetermined level of charge; Optionally, the service menu can be accessed by providing a series of inputs via a user interface.

[0092] In some configurations, the device is configured to allow the user to initiate battery discharge to a predetermined charge level based on a message from a remote device.

[0093] In some configurations, users can cancel battery discharge via the user interface.

[0094] In some configurations, at least one display includes an interactive element configured to trigger a controller to cancel battery discharge.

[0095] In some configurations, the device is configured to determine whether a patient is connected to the patient interface.

[0096] In some configurations, the device is configured to determine whether a patient is connected to a patient interface based on flow rate and / or pressure data of the gas flow.

[0097] In some configurations, the device is configured to determine whether a patient is connected to the patient interface based on the flow resistance of the gas flow.

[0098] In some configurations, the controller is configured to cancel battery discharge when the device determines that a patient is connected to the patient interface.

[0099] In some configurations, the humidifier is configured to be pneumatically connected to a flow generator, and the humidifier flow generator generates a gas flow.

[0100] In some configurations, conduits are connected to the device's outlet.

[0101] In some configurations, the catheter is one or more of the following: expiratory catheter, inspiratory catheter, patient supply catheter.

[0102] In some configurations, conduits are pneumatically connected to the device.

[0103] In some configurations, the duct forms part of the gas flow path.

[0104] In some configurations, the device includes a heater plate that functions as a humidifier heater, wherein the heater plate is configured to heat the contents of the humidification chamber.

[0105] In some configurations, the controller is configured to discharge the battery to a predetermined charge level when the device receives a message from the device.

[0106] In some configurations, the device includes at least one communication module configured to receive messages from the device.

[0107] In some configurations, the device is one or more of the following: server, computer, Telephone, Tablet PC.

[0108] In some configurations, the device is configured to select one of a number of connected devices by the device ID associated with each device.

[0109] In some configurations, the device is configured to receive input from one or the user interface and communicate messages to the device based on the input.

[0110] In another aspect, a method for manufacturing a battery for a respiratory assist device is provided, the method comprising: At least one component of the control device is used to discharge the battery to a predetermined charge level, wherein the at least one component includes: The heater of the humidifier, Flow generator A conduit configured to be connected to the device, the conduit including a heater.

[0111] On the other hand, a respiratory support system is provided, comprising: Flow generator A humidifier configured to be pneumatically connected to a flow generator and humidifying the breathable gas flow generated by the flow generator, the humidifier including at least one heater (optionally a heater plate). The conduit, configured to be powered by the equipment, includes a heater. A controller configured to control one or more of the following: a flow generator, a humidifier heater, and / or a duct heater for discharging the battery to a predetermined charge level.

[0112] On the other hand, a respiratory assist device is provided, comprising: A battery, configured to supply power to at least one component of the device. At least one component includes one or more of the following: The heater of the humidifier, Flow generator The conduit, configured to be powered by the equipment, includes a heater. A controller configured with at least one component of a battery discharge configuration control device to discharge the battery to a predetermined charge level. The controller is configured to receive commands from a user interface relating to the selection of a battery discharge configuration, wherein the user interface is part of the device or another apparatus.

[0113] The term "and / or" means "and" or "or", or both.

[0114] The "(s)" following a noun indicates the plural and / or singular form of the noun.

[0115] For the purposes of this specification, the term "plastic" should be interpreted as a general term used for a wide range of synthetic or semi-synthetic polymeric products, and is generally composed of hydrocarbon-based polymers.

[0116] For the purposes of this specification, where method steps are described in sequence, the sequence does not necessarily mean that the steps are arranged chronologically in that sequence, unless there is no other logical way to explain the sequence.

[0117] As used in this specification and claims, the term "comprising" means "consisting of at least in part...". When interpreting each statement in this specification that includes the term "comprising", features other than those preceding the term may also be present. The related terms "comprise" and "comprises" are interpreted in the same manner.

[0118] The invention can also be broadly defined to include parts, elements, and features individually or collectively mentioned or indicated in the description of this application, as well as any or all combinations of any two or more of the said parts, elements, or features, and wherein a particular whole mentioned herein has a known equivalent in the field to which the invention relates, such known equivalents are considered to be incorporated herein as if set forth separately.

[0119] Many structural variations and a wide range of different embodiments and applications of the invention will be apparent to those skilled in the art without departing from the scope of the invention as defined by the appended claims. The disclosure and description herein are purely illustrative and are not intended to be limiting in any way.

[0120] Other aspects of the invention may become apparent from the following description, which is given by way of example only and with reference to the accompanying drawings. Attached Figure Description

[0121] Preferred embodiments of the present invention will be described by way of example only and with reference to the accompanying drawings, in which: Figure 1The respiratory assist device is shown in the form of a diagram.

[0122] Figure 2 , Figure 3A and Figure 3B A perspective view of a respiratory assist device is shown.

[0123] Figure 4 A rear perspective view of the respiratory assist device is shown.

[0124] Figure 5 A schematic gas flow path diagram for the filter module and valve module is shown, where solid arrows indicate gas flow.

[0125] Figure 6 A flowchart illustrating the process of entering the shipping configuration is shown.

[0126] Figure 7 A flowchart illustrating the process of entering storage configuration is shown.

[0127] Figure 8 A flowchart illustrating the prompts for user input to access storage configuration is shown.

[0128] Figure 9 A flowchart illustrating the process of entering the recall configuration is shown.

[0129] Figure 10 A flowchart illustrating the entry into the disposal configuration is shown.

[0130] Figure 11 A flowchart illustrating entering the battery discharge configuration and discharging the battery to a predetermined level is shown.

[0131] Figure 11A A flowchart illustrating the process of activating, increasing power output and / or increasing the output of a component, and then deactivating, decreasing power output and / or decreasing the output of the component.

[0132] Figure 11B A flowchart illustrating the activation, increase of power output and / or increase of component output, holding, and then deactivation, decrease of power output and / or decrease of component output, as well as the reverse.

[0133] Figure 12 A flowchart illustrating the increase and decrease of the flow generator's output is shown.

[0134] Figure 12A A flowchart illustrating increasing, maintaining, and then decreasing the output of the flow generator, as well as the reverse, is shown.

[0135] Figure 13 A flowchart illustrating the increase and decrease of the power of the heater and / or the heater in the duct delivered to the humidifier is shown.

[0136] Figure 13A A flowchart illustrating increasing, maintaining, and then decreasing the power of the heaters delivered to the humidifier and / or the duct, as well as the reverse, is shown.

[0137] Figure 14 A flowchart illustrating the increase and decrease of target gas temperature and / or target heater temperature is shown.

[0138] Figure 14A A flowchart illustrating increasing the target gas temperature and / or the target heater temperature, maintaining it, and then decreasing the target gas temperature and / or the target heater temperature, as well as the reverse, is shown.

[0139] Figure 15 An example of a display showing options for users to select different battery discharge configurations is shown.

[0140] Figure 15A An example of a discharge menu displayed on a monitor during the discharge process is shown.

[0141] Figure 16 A flowchart illustrating the process of receiving messages from the device and controlling the components to discharge the battery to a predetermined level is shown.

[0142] Figure 17 A flowchart illustrating how the communication module receives messages from the device and control components to discharge the battery to a predetermined level is shown. Detailed Implementation

[0143] The respiratory assist device 10 provides the user with treatments such as any one or a combination of the following: high-flow nasal airway (NHF) therapy, continuous positive airway pressure (CPAP) therapy, non-invasive ventilation (NIV) and bubble continuous positive airway pressure (BCPAP) therapy.

[0144] During operation, device 10 can be operated by multiple power sources. In some cases, device 10 can be powered by mains power (e.g., from the power grid). In other cases, device 10 can be powered by batteries. In some embodiments, the batteries can be multiple batteries. In some embodiments, the batteries can be provided as part of a battery pack.

[0145] Respiratory Assist Device 10 Figure 1As shown in the figure. The breathing assist device 10 may include a housing 100 (e.g., as a single housing) containing one or more of the following: a flow generator 11 in some embodiments in the form of a motor / impeller arrangement (e.g., a blower), a humidifier 12 pneumatically connected to the flow generator 11, a controller 13, and a user interface 14 (including, for example, a display and input devices such as buttons, a touch screen, etc.).

[0146] exist Figure 1 In the diagram, device 10 shows a housing 100, which includes a flow generator 11 and a humidifier 12 pneumatically connected to the flow generator 11. Figure 1 As shown, the humidifier 12 and the flow generator 11 are integrated into a common housing. This provides a compact device that can be easily moved or carried around to provide mobility. Furthermore, the combination of the flow generator 11 and the humidifier 12 in the same housing allows for a simpler setup (i.e., the chamber 300 can be positioned within the housing or in a docking part provided by the housing).

[0147] In some embodiments, the respiratory assist device 10 may not include a flow generator 11. In this case, the device 10 does not generate gas flow but is configured to connect to an external flow generator and humidify the gas flow from the external flow generator. For example, the respiratory assist device 10 may function as a standalone humidifier to humidify the gas flowing through it. The flow generator may be a wall-mounted gas or ventilator or other separate flow generator that may be configured to provide one of the treatments described elsewhere in the specification (e.g., NIV, NHF, CPAP, BCPAP, invasive ventilation, etc.). The humidifier may include a battery coupled to it to supply power when mains power is unavailable (as described in more detail below). In some embodiments, the battery may be removably coupled to the device and is rechargeable. The humidifier is pneumatically coupled to the flow generator via a conduit, and a separate conduit is coupled to the humidifier to deliver humidified gas from the humidifier to the patient.

[0148] exist Figure 3A and Figure 3B An example of device 10 as a humidifier (i.e., without a flow generator) is shown. The device includes a connector that pneumatically connects conduit 16 (as described in more detail above) to the outlet of humidification chamber 31 (as the gas outlet of the device). Conduit 16 may be an inspiratory branch of the patient circuit, i.e., configured to deliver humidified gas to the user, such as via a patient interface (not shown). Conduit 16 may have a conduit heater 16a (e.g., as described elsewhere in the specification).

[0149] The inlet 8 of the humidification chamber 300 is configured to be fluidly connected to a flow generator located remotely from the device 10 (e.g., via...). Figure 3A (The conduit connected to inlet 8 is shown in the diagram).

[0150] like Figure 3A and Figure 3B As shown, device 10 further includes a panel 9, which can be used to mount a user display and / or controller. For example, various dials, switches, and other input devices can be used to control the operation of the device. Additionally, or alternatively, a touchscreen display can be used. The user display can show system parameters, warnings in case of any errors or malfunctions, or prompts requiring user action, etc. When using a touchscreen display, the same display can be used to present information to the user and at least partially receive input from the user (as described elsewhere in this specification, for example). Figure 3A and 3B The humidifier device shown may include multiple sensors. For example, humidifier 10 may include a flow sensor, one or more temperature sensors, one or more pressure sensors, and one or more humidity sensors. In one example configuration, the humidifier includes at least one temperature sensor located in or near the inlet and a temperature sensor located in or near the outlet of chamber 300. Optionally, the humidifier may include a flow sensor located in or near the outlet of chamber 300. Additionally, a further flow sensor may be located in or near inlet 8. Optionally, the humidifier may include a single flow sensor located in the inlet or outlet. The humidifier may additionally include one or more humidity sensors, which may be arranged in or near the inlet or outlet, or disposed in both the inlet and outlet. Further, there may also be an additional ambient temperature sensor. The humidifier may also include additional sensors associated with a heater, such as a temperature sensor associated with the heater.

[0151] In some configurations, such as Figure 3A and Figure 3B The device 10 shown may include a battery (discussed in more detail below).

[0152] Device 10 may be, for example, the device described in WO2015 / 093989, the entire contents of which are incorporated herein by reference.

[0153] The humidifier 12 can humidify the gas flow and / or heat the gas flow to an appropriate level. The controller 13 can be configured to control the humidifier 12 (e.g., by controlling at least one humidifier heater).

[0154] The humidifier 12 may include a humidification chamber. The humidification chamber may be configured to be removed from the humidifier (e.g., for replacement, cleaning, and / or refilling). Alternatively, the humidification chamber may be non-removable from the humidifier.

[0155] The humidification chamber may include an automatic filling mechanism comprising at least one valve and a float coupled to the valve. In use, the humidification chamber may be coupled to a water reservoir in a water bag for automatic filling. Alternatively, the humidification chamber may be manually refilled.

[0156] Humidifier 12 may include humidifier heater 310, for example as a heater plate (see Figure 2 The humidifier heater provides heat to the humidification chamber 300. The liquid in the humidification chamber can be water or another liquid, and / or may include a mixture of one or more liquids (e.g., a mixture of water and a drug).

[0157] The heater 310 of the humidifier 12 can be a conductive heating element.

[0158] The controller 13 can be configured or programmed to control the operation of the respiratory assist device 10. For example, the controller 13 can control components of the respiratory assist device 10, including but not limited to: operating the flow generator 11 to generate a gas flow (airflow) for delivery to the patient; operating the humidifier 12 (if present) to humidify and / or heat the generated airflow; controlling the oxygen flow into the flow generator blower; receiving user input from the user interface 14 for reconfiguration and / or user-defined operations of the respiratory assist device 10; and outputting information to the user (e.g., on a display).

[0159] Controller 13 may include one or more sub-controllers. Each sub-controller may be configured to control one or more components of the device (e.g., a flow generator sub-controller, and / or a humidifier sub-controller, and / or a humidifier or duct heater sub-controller). Controller 13 may include a master controller configured to communicate with the sub-controllers and transmit commands to them.

[0160] Controller 13 may include one or more computer processors and associated non-transitory memory or storage medium storing processor-executable instructions or code. When executed by one or more processors, these instructions cause the respiratory therapy device to influence the steps and processes described herein.

[0161] It should be understood that when the instruction manual describes the device 10 taking action, the controller 13 can control one or more components of the device 10 to take action.

[0162] It should be understood that the methods described herein can be executed by a controller (or another processor).

[0163] The term respiratory assist device can be used interchangeably with respiratory support device, or respiratory therapy device, or mobile therapy device.

[0164] The term respiratory support system can be used interchangeably with respiratory support system, or respiratory therapy system, or mobile therapy system.

[0165] The term current flow can refer to a measurement of flow that has been performed at the current time step (e.g., at the current time step). It should be understood that the term current flow is not limited to the most recent flow determination, and may include the most recent flow determination (e.g., from a previous time step or the most recent flow determination), and / or a filtered flow determination based on a series of past measurements (which may optionally include signal filtering and / or processing).

[0166] The methods described herein can be embodied as software or software modules that are part of control software (e.g., computer-readable instructions), which are stored in a controller (or associated memory) and executed by the controller (and / or associated processor).

[0167] In the case of receiving treatment, the user is the patient; however, in the case of interacting with the device (e.g., interacting with the user interface), the user can be one or more of the following: a patient, a healthcare professional (e.g., a clinician), or any other person interested in using the device.

[0168] As used herein, “airflow” can refer to any flow of gas that can be provided by a breathing aid, such as the flow of ambient air, the flow of essentially 100% oxygen, or the flow of some combination of ambient air and oxygen.

[0169] The breathing tube 16 is connected at one end to the gas outlet 21 in the housing 100 of the respiratory assist device 10. The breathing tube 16 is connected at the other end to a patient interface 17, such as an unsealed nasal cannula with a manifold 19 and a nose fork 18. Alternatively, the breathing tube 16 may be connected to a face mask, nasal mask, nasal pillow mask, endotracheal tube, tracheostomy interface, etc.

[0170] A breathing tube can be provided between the breathing tube 16 and the patient interface 17.

[0171] In some embodiments, different types of conduits may be connected to the gas outlet 21, such as a disinfection conduit for disinfection mode.

[0172] The gas flow generated by the respiratory assist device 10 can be humidified and delivered to the patient via the breathing tube 16 and the patient interface 17.

[0173] The breathing tube 16 may have a heater 16a to heat the airflow passing through the patient. The heater 16a may be under the control of the controller 13. In at least one configuration, the heater 16a is a heater line. The breathing tube 16 and / or the patient interface 17 may be considered part of a respiratory support system. The respiratory support system 1 may include a respiratory support device 10, a breathing tube 16, and a patient interface 17.

[0174] The heater 16a of the breathing tube can be positioned: a) Inside the lumen of breathing tube 16, b) Inside the wall of the breathing tube 16, c) Embedded in the wall of the breathing tube 16, d) Embedded in the bead forming the breathing duct 16, the bead being configured to provide structural support to the duct 16, or e) Positioned on the outer surface of the breathing tube 16, or any one or combination of f)a)-e).

[0175] The heater 16a may extend linearly along the conduit 16, or be spirally wound around the conduit, or spirally wound inside or within the conduit wall.

[0176] The heater 16a of the breathing tube 16 can be a conductive heating element (e.g., heater wire).

[0177] The controller 13 can control the flow generator 11 to produce an airflow of a desired flow rate (e.g., therapeutic flow rate). The controller 13 can also control the supplemental oxygen inlet to allow the delivery of supplemental oxygen. As described in more detail below, the controller 13 can control a proportional valve located at the supplemental oxygen inlet to change the delivery of supplemental oxygen to the flow generator 11.

[0178] The controller 13 can also control the humidifier heater in the humidifier 12 and / or the heater 16a in the breathing tube 16 to heat the gas to a desired temperature for the patient’s desired therapeutic and / or comfort level.

[0179] The controller 13 can be set or can determine a suitable target temperature for the gas flow. The controller 13 can control the humidifier heater 12 and / or the heater 16a of the breathing duct based on one or more suitable target temperatures for the gas flow.

[0180] The heater 16a of the breathing tube 16 can be controlled by the controller 13 to achieve a desired temperature. The desired temperature can be based on one or more temperature setpoints and / or one or more humidity setpoints (e.g., therapeutic humidity).

[0181] The humidifier heater 12 can be controlled by the controller 13 to achieve a desired temperature. The desired temperature can be based on one or more temperature setpoints and / or one or more humidity setpoints. The desired temperature can be a therapeutic parameter.

[0182] The controller 13 can control the heater 16a of the breathing tube 16 and / or the humidifier heater 12 to the desired temperature through closed-loop control based on the output of one or more sensors.

[0183] One or more temperature setpoints may be associated with one or more treatment parameters of the device used for treatment (e.g., the dew point or temperature of a gas), or may be provided in the device's memory (e.g., a predetermined temperature).

[0184] The device can provide multiple treatment modes. Treatment modes can be selected manually or automatically by the user, and once selected, the device can provide the selected treatment mode to the patient.

[0185] The device can provide any one or a combination of the following: high-flow nasal cannula (NHF) therapy, continuous positive airway pressure (CPAP) therapy, non-invasive ventilation (NIV), and bubble continuous positive airway pressure (BCPAP) therapy. The device may include one or more control modes associated with each therapy type. Control modes may be manually selected by the user or automatically selected based on the components connected to the device (e.g., based on the type of tubing and / or patient interface connected to the device). Each control mode may have an associated control scheme for controlling components of the device (e.g., a flow generator, humidifier heater 310, or tubing heater 16a).

[0186] One or more treatment parameters used for NHF treatment may include any one or a combination of the following: The therapeutic flow rate of the gas provided to the user. Treat humidity levels (e.g., relative or absolute humidity, or dew point). The therapeutic oxygen concentration provided to users The therapeutic concentration of the auxiliary gas provided to the user. The therapeutic temperature of the gas supplied to the user (e.g., high flow rate).

[0187] One or more treatment parameters used for BCPAP treatment may include any one or a combination of the following: The therapeutic flow rate of the gas provided to the user. Treat humidity levels (e.g., relative or absolute humidity, or dew point). The therapeutic oxygen concentration provided to users The therapeutic concentration of the auxiliary gas provided to the user. The therapeutic temperature of the gas provided to the user.

[0188] One or more treatment parameters used for CPAP therapy may include any one or a combination of the following: Treatment of humidity levels (e.g., relative or absolute humidity, or dew point). The therapeutic oxygen concentration provided to users The therapeutic temperature of the gas provided to the user. The therapeutic concentration of the auxiliary gas provided to the user. The level of stress support provided to users (e.g., CPAP stress). Provides treatment for PEEP stress to users.

[0189] NIV therapy can be bilevel pressure therapy, in which a first pressure (i.e., inspiratory airway pressure) is provided during the patient's inspiratory phase and a second pressure (i.e., expiratory airway pressure) is provided during the patient's expiratory phase.

[0190] One or more treatment parameters used for bilevel therapy (i.e., NIV therapy) may include any one or a combination of the following: Treat humidity levels (e.g., relative or absolute humidity, or dew point). The therapeutic oxygen concentration provided to users The therapeutic temperature of the gas provided to the user. The therapeutic concentration of the auxiliary gas provided to the user. The therapeutic IPAP pressure (inspiratory positive airway pressure) provided to the user. The therapeutic EPAP pressure (Positive Expiratory Airway Pressure) provided to the user.

[0191] Treatment temperature may include the treatment temperature at the chamber outlet and / or the treatment temperature at the tip of the breathing tube.

[0192] The therapeutic humidity can be applied at the room exit or at the end of the breathing tube.

[0193] The therapeutic humidity level can be approximately 27°C to approximately 40°C, or approximately 29°C to approximately 39°C, or approximately 31°C to approximately 38°C, or approximately 37°C at the dew point, and / or at an absolute humidity level above approximately 38 mgH2O or approximately 44 mgH2O.

[0194] Providing users with humidity can increase patient comfort and adherence to treatment. The provision of humidity also offers additional benefits, such as improved mucus transport, which can be used for patients with obstructive pulmonary diseases (e.g., COPD).

[0195] Users can input one or more treatment parameters through the user interface of the breathing assist device.

[0196] The desired temperature can be measured at the end of the breathing tube 16, at the patient interface, at the gas outlet, at the humidification chamber outlet, at any other sensor of the device, and / or any combination thereof.

[0197] One or more temperature setpoints may include one or more of the following: Desired dew point (e.g., temperature indicating desired humidity). The scheduled dew point, The predetermined temperature Desired temperature.

[0198] In some embodiments, the controller 13 may control the heater 16a of the breathing tube 16 based on the desired temperature of the gas at the patient interface and / or the desired temperature at the end of the breathing tube 16.

[0199] The equipment can be powered by mains electricity, for example, via a wired connection to the power grid. Alternatively, mains-level power sources can be, for example, portable generators, distributed generation power sources, and / or non-portable generators, such as hospital backup generators.

[0200] In some embodiments, the mains power supply can be any power source configured to be connected to the device via the electrical outlet 114.

[0201] In some embodiments, the mains power supply may include any power source that does not have a capacity limitation (e.g., a battery that will deplete its energy storage over time when it is withdrawn).

[0202] The device can be powered by a non-peak power limited source or a peak power limited source (e.g., a battery that may have a maximum rated current and / or power output below the device's peak current and / or rated power). In this context, the limited peak power (or current) refers to the peak power required for the device to operate at full capacity.

[0203] The equipment can be powered by an integrated power supply or an external power supply.

[0204] In some embodiments, such as Figure 4 As shown, the device may include at least one battery (with an optional battery cover 126) as part of a battery module 125. The battery module may be located within the housing of the device and / or attached externally to the housing of the device (e.g., Figure 4 As shown). In some embodiments, the battery is removable (e.g. Figure 4 (as shown), and optionally connectable to and disconnectable from device 10. Alternatively, the battery is non-removable.

[0205] Battery 125 may include multiple battery cells that supply voltage and current (i.e., power).

[0206] As used herein, the term 'battery' is intended to encompass battery modules, battery packs, and other similar devices that may combine multiple batteries and / or battery cells, along with optional additional hardware such as battery management systems (BMS), monitors, communication modules, etc. The term 'battery' may be used interchangeably with the terms described above in this specification.

[0207] The battery (e.g., battery module 125) may include a battery detection pin and / or a battery detection port. The battery detection pin and / or battery detection port may be configured to communicate with the device to which the battery is connected. The battery detection pin may include a pull-up or pull-down resistor connected to the battery detection pin.

[0208] The battery module may include one or more memory elements configured to store one or more battery parameters.

[0209] Battery parameters may include: a) Battery expiration date, b) Battery cell status c) Battery status. d) The number of charge and discharge cycles the battery has undergone. e) Battery capacity (e.g., as a percentage of the original maximum capacity), or any one or combination of f)a)-e).

[0210] Device 10 may include an electrical outlet 114 configured to receive a plug connected to the power cord of the device to supply power to the device from mains power.

[0211] The power cord plug is removably connected to the electrical outlet 114, so that if the power cord is damaged during use, the power cord plug can be replaced without any rewiring of the device 10.

[0212] Device 10 may include, for example Figure 4 The power cord holder 351 is shown. The power cord holder 351 can be attached to the battery cover 126 of the battery module 125 such that during assembly, the power cord is attached to the device 10 after the battery cover 126, with the power cord holder 351 being attached last. Alternatively, the power cord holder 351 can be attached to different parts of the housing 100.

[0213] The device may include a battery charger configured to charge battery 125. The device may be configured to charge the battery when the device is powered by an AC power source (and optionally when the device detects the presence of an AC voltage, such as when the AC voltage is at or above an AC power threshold (e.g., 110 V or 230 V + / - 10%) and the battery is not fully charged (and optionally when the battery charge is below a charging threshold (e.g., 95%)).

[0214] The battery module can communicate one or more battery parameters as described above to the controller.

[0215] In some embodiments, the battery may communicate with the controller 13 to request charging by the battery charger until the battery 125 is fully charged. In some embodiments, the battery module 125 includes a battery monitor that monitors one or more battery parameters.

[0216] Device 10 may include an AC power conversion circuit.

[0217] The mains power conversion circuit may include one or more switching power supplies (or, for example, any other AC to DC converter).

[0218] The AC power conversion circuit can be configured to convert AC power to a low DC voltage (optionally, from about 3 volts DC to about 60 volts DC).

[0219] Device 10 may include a battery conversion circuit. The battery conversion circuit is configured to convert battery power to a low DC voltage (optionally from about 3 volts DC to about 60 volts DC).

[0220] For example, such as Figure 2 As shown, the oxygen inlet port 28 includes a valve 1003 through which pressurized gas enters the respiratory therapy device 10. The valve controls the flow of oxygen into the respiratory therapy device 10. The valve can be any type of valve, including a proportional valve or a binary valve. The proportional valve can be an electronic proportional valve.

[0221] The oxygen source can be an oxygen cylinder or a hospital oxygen supply unit. Medical-grade oxygen typically has a purity between 95% and 100%. Lower purity oxygen sources can also be used. Examples of valve modules and filters are disclosed in U.S. Provisional Application No. 62 / 409,543, filed October 18, 2016, entitled "Valve Module and Filter," and U.S. Provisional Application No. 62 / 488,841, filed April 23, 2017, also entitled "Valve Module and Filter," which are incorporated herein by reference in their entirety.

[0222] The respiratory assist device 10 can measure and control the oxygen content of the gas delivered to the patient, and thus measure and control the oxygen content of the gas inhaled by the patient.

[0223] The respiratory assist device 10 can provide high-flow therapy, wherein the high flow rate of delivered gas meets or exceeds the patient’s peak inspiratory needs.

[0224] Operating sensors 3a, 3b, 3c (such as flow, temperature, humidity, and / or pressure sensors) can be placed in different locations within the respiratory assist device 10. Additional sensors (e.g., sensors 20, 25) can be placed in different locations on the breathing tube 16 and / or patient interface 17 (e.g., temperature sensor 29 may be present at or near the end of the inspiratory tube).

[0225] The respiratory therapy device 10 may have a communication module 15 that enables the controller 13 to receive signals 8 from sensors and / or control various components of the respiratory support device 10, including but not limited to the flow generator 11, humidifier 12, heater 16a, humidifier heater, or accessories or peripheral devices associated with the respiratory support device 10. Additionally or alternatively, the communication module 15 may deliver data to a remote server or enable remote control of the respiratory therapy device 10 or the respiratory therapy system 1.

[0226] The communication module may include a transmitter, a receiver, and / or a transceiver.

[0227] The communication module 15 can act as a network interface (e.g., as a modem).

[0228] The communication module 15 may use one or more communication protocols known in the art, such as Wi-Fi, Bluetooth, Zigbee, cellular (3G, 4G or 5G, etc.).

[0229] The communication module 15 allows communication between the device and mobile devices, such as a phone or tablet via Bluetooth or Wi-Fi.

[0230] The communication module may include multiple separate transmitters, receivers and / or transceivers for each communication protocol or for a set of communication protocols.

[0231] The communication module 15 can be configured to transmit data and receive data from one or more devices (e.g., a server), as described in more detail below.

[0232] In some embodiments, one or more leak or blockage events or alarms (described in more detail below) may be sent to one or more servers and / or devices (e.g., computers, phones, or tablets). Additional information associated with the event or alarm (e.g., time, duration, or severity) may be sent to the server and / or device.

[0233] As described above, the respiratory assist device 10 can measure and control the oxygen content of the gas delivered to the patient. Oxygen can be measured by placing one or more gas composition sensors (such as an ultrasonic transducer system) after the oxygen and ambient air have been mixed. Measurements can be performed within the respiratory therapy device 10, the patient breathing tube 16, the patient interface 17, or at any other suitable location.

[0234] The oxygen concentration measured in the device can be equal to the fraction of delivered oxygen (FdO2) and can be substantially the same as the oxygen concentration the patient is breathing, the fraction of inhaled oxygen (FiO2), and therefore the term can be considered equivalent, for example during treatment using sealed interfaces (i.e., NIV and CPAP) and / or during high-flow treatment, when the flow rate of the delivered gas meets or exceeds the patient’s peak inspiratory demand, to minimize or prevent entrainment of ambient air.

[0235] Oxygen concentration can also be determined by measuring the flow rates of at least two of the following: ambient air inlet tubing, oxygen inlet tubing, and patient breathing tubing, using flow sensors. The final oxygen concentration of the gas composition can be calculated by determining the flow rates of the two inlet gases, or one inlet gas and a total flow rate, along with the assumed or measured oxygen concentration of the inlet gases (approximately 20.9% for ambient air and approximately 100% for oxygen). Alternatively, flow sensors can be placed at all three points in the ambient air inlet tubing, oxygen inlet tubing, and breathing tubing to allow for redundancy and to test the correct operation of each sensor by checking the consistency of the readings. Other methods of measuring the oxygen concentration delivered by the respiratory assist device 10 can also be used.

[0236] The respiratory assist device 10 may include a patient sensor 26, such as a pulse oximeter or a patient monitoring system, to measure one or more physiological parameters of the patient, such as the patient's blood oxygen concentration (e.g., blood oxygen saturation (SpO2)), heart rate, respiratory rate, perfusion index, and to provide a measurement of signal quality. The sensor 26 may communicate with the controller 13 via a wired connection or via a wireless transmitter on the sensor 26. The sensor 26 may be a disposable adhesive sensor designed to attach to the patient's finger. The sensor 26 may also be a non-disposable sensor (i.e., a reusable sensor). Sensors designed for different age groups and attached to different locations on the patient are available and can be used with the respiratory assist system 1. The pulse oximeter may typically be attached to the patient's finger, but other locations (such as the earlobe) are also an option. The pulse oximeter may be connected to a processor in the respiratory therapy device 10 and may provide a constant signal indicating the patient's blood oxygen saturation. The patient sensor 26 may be a hot-swappable device that can be attached or interchanged during operation of the respiratory assist device 10. For example, the patient sensor 26 can be connected to the respiratory assist device 10 using a USB interface or a wireless communication protocol such as Bluetooth®.

[0237] When patient sensor 26 is disconnected during operation, the respiratory assist device 10 can continue operating in its previous operating state for a defined period of time. After the defined period of time, the respiratory assist device 10 can trigger an alarm, switch from automatic mode to manual mode, and / or exit control mode completely (e.g., automatic or manual mode). Patient sensor 26 can be a bedside monitoring system or other patient monitoring systems that communicate with the respiratory assist device 10 via a physical or wireless interface.

[0238] The respiratory assist device 10 may include or be in the form of a high-flow therapy device.

[0239] In some examples, the respiratory assist device 10 may be configured to provide at least or only high flow.

[0240] As discussed herein, high-flow therapy is intended to be given its typical, general meaning as understood by those skilled in the art. High-flow therapy generally refers to a respiratory assist device that delivers a target flow rate of humidified respiratory gas via an intentionally unsealed patient interface at a flow rate generally designed to meet or exceed the patient's inspiratory flow. Typical patient interfaces include, but are not limited to, nasal or tracheal patient interfaces. Typical flow rates for adults are typically from about 15 liters per minute to about 60 liters per minute or higher, but are not limited to this. Typical flow rates for pediatric patients (such as newborns, infants, and children) are typically, but are not limited to, from about 1 liter per minute per kilogram of patient body weight to about 3 liters per minute per kilogram of patient body weight or higher. High-flow therapy may also optionally include gas mixture components (including supplemental oxygen and / or administration of therapeutic drugs). High-flow therapy is commonly referred to as nasal high-flow (NHF), humidified high-flow nasal cannula (HHFNC), high-flow nasal oxygen (HFNO), high-flow therapy (HFT), or tracheal high-flow (THF), among other common names.

[0241] For example, in some configurations, for adult patients, “high-flow therapy” may refer to the delivery of gas to the patient at a flow rate greater than or equal to about 10 liters per minute (10 LPM), such as between about 10 LPM and about 100 LPM, or between about 15 LPM and about 95 LPM, or between about 20 LPM and about 90 LPM, or between about 25 LPM and about 85 LPM, or between about 30 LPM and about 80 LPM, or between about 35 LPM and about 75 LPM, or between about 40 LPM and about 70 LPM, or between about 45 LPM and about 65 LPM, or between about 50 LPM and about 60 LPM. In some configurations, for newborn, infant, or pediatric patients, "high-flow therapy" can refer to delivering gas to the patient at a flow rate greater than 1 LPM, such as between about 1 LPM and about 25 LPM, or between about 2 LPM and about 25 LPM, or between about 2 LPM and about 5 LPM, or between about 5 LPM and about 25 LPM, or between about 5 LPM and about 10 LPM, or between about 10 LPM and about 25 LPM, or between about 10 LPM and about 20 LPM, or between about 10 LPM and about 15 LPM, or between about 20 LPM and 25 LPM. In some configurations, high-flow therapy devices for adult, newborn, infant, or pediatric patients can deliver gas to the patient at a flow rate between about 1 LPM and about 100 LPM, or at any of the above subranges. The delivered gas may include a percentage of oxygen. In some configurations, the percentage of oxygen in the delivered gas may be between approximately 20% and approximately 100%, or between approximately 30% and approximately 100%, or between approximately 40% and approximately 100%, or between approximately 50% and approximately 100%, or between approximately 60% and approximately 100%, or between approximately 70% and approximately 100%, or between approximately 80% and approximately 100%, or between approximately 90% and approximately 100%, or approximately 100% or 100%.

[0242] High-flow therapy can effectively reach or exceed the patient's inspiratory flow, increasing the patient's oxygenation and / or reducing the work of breathing.

[0243] High-flow therapy can be administered nasally and / or orally to the patient, or through a tracheostomy interface.

[0244] High-flow-rate therapy creates a flushing effect in the nasopharynx, flushing the anatomical dead space of the upper airway with a high inlet gas flow. This creates a reservoir of fresh gas available for each breath and rebreath, while reducing nitrogen and carbon dioxide rebreathing. Meeting inspiratory needs and flushing the airway are also crucial when attempting to control a patient's FdO2. High-flow-rate therapy can be delivered through non-sealed patient interfaces such as nasal cannulas. High-flow-rate therapy can slow a patient's respiratory rate. High-flow-rate therapy can provide expiratory resistance to the patient.

[0245] High-flow therapy can be used to treat patients with obstructive pulmonary disease (such as COPD), bronchiectasis, dyspnea, cystic fibrosis, emphysema and / or patients with respiratory distress or hypercapnia.

[0246] As used herein, the term "unsealed patient interface" (i.e., an unsealed patient interface) can refer to an interface that provides a pneumatic link between a patient's airway and a gas flow source, such as from flow generator 11, which does not completely obstruct the patient's airway. An unsealed pneumatic link can include an obstruction of less than approximately 95% of the patient's airway. An unsealed pneumatic link can include an obstruction of less than approximately 90% of the patient's airway. An unsealed pneumatic link can include an obstruction between approximately 40% and approximately 80% of the patient's airway. The airway can include one or both of the patient's nostrils and / or their mouth. For nasal intubation, the airway is through the nostrils.

[0247] In some embodiments, the "unsealed patient interface" may include an endotracheal interface.

[0248] CPAP therapy may include gas supplied to the user at a continuous positive pressure (and optionally one or more treatment parameters as described in more detail above).

[0249] BCPAP therapy may include gas supplied to the user at a therapeutic flow rate (and optionally one or more therapeutic parameters as described in more detail above).

[0250] Dual-layer therapy may include the gas supplied to the user at the treatment IPAP and EPAP (and optionally one or more treatment parameters as described in more detail above).

[0251] When the device provides CPAP, Bilevel, or BCPAP treatment, a sealed interface can be used.

[0252] The flow generator 11 may be or include a blower module. The blower module may include at least one blower 11 configured to generate the gas flow.

[0253] The flow generator 11 may include an ambient air inlet port 27 through which ambient indoor air can be entrained into the blower. The breathing aid device 10 may also include an oxygen inlet port 28 leading to a valve through which pressurized gas can enter the flow generator 11. The valve can control the flow of oxygen into the flow generator 11. The valve can be any type of valve, including proportional valves or binary valves.

[0254] Blower 11 can operate at motor speeds greater than about 1,000 RPM and less than about 8,000 RPM, greater than about 2,000 RPM and less than about 10,000 RPM, or between any of the foregoing values. Blower 11 can mix gases entering blower 11 through gas inlets (e.g., ambient air inlet port 27 and / or oxygen inlet port 28). Using blower 11 as a mixer can reduce pressure drop relative to systems with separate mixers (such as static mixers including baffles).

[0255] The respiratory support device may further include a gas composition sensor. The gas composition sensor may be a sensor described below (e.g., an ultrasonic transducer configuration).

[0256] The respiratory assist device 10 includes a flow sensor. The flow sensor can be configured to measure the flow rate of the breathable gas flowing through the patient.

[0257] Controller 13 may include one or more processors. The processors may be configured with computer-readable instructions.

[0258] The controller 13 may include at least one memory element. The memory element may be configured to store the computer-readable instructions.

[0259] Memory elements can be non-transitory computer-readable media.

[0260] The controller 13 may be a combination of a microprocessor or ASIC, FPGA or IC or other suitable components and / or architecture.

[0261] The respiratory assist device may include at least one display module configured to display alarm output.

[0262] A breathing assist device may include at least one audible module configured to emit an audible alarm.

[0263] In some embodiments, at least one audible module may include a speaker.

[0264] The display module may include at least one display (e.g., a liquid crystal display (LCD) or a light-emitting diode (LED) display, but it should be understood that any display technology may be used).

[0265] The display module can be configured to receive input to the system (e.g., as a touchscreen) and is therefore at least part of or a display portion of the user interface 14.

[0266] The display module can be configured as an input / output (I / O) module. For example, the display module can be configured to receive input from the user and provide output to the user (e.g., as part of user interface 14 or the display portion).

[0267] The display module can communicate with the controller 13. In some embodiments, the display module can provide information (e.g., setpoints) to the controller 13. In some embodiments, the display module can receive information (e.g., alarms, sensor outputs, and / or other calculated variables) from the controller 13.

[0268] Examples of flow therapy devices are disclosed in International Application No. PCT / NZ2016 / 050193 entitled “Flow path sensing for flow therapy devices” filed on December 2, 2016, and International Application No. PCT / IB2016 / 053761 entitled “Respiratory assistive devices” filed on June 24, 2016, which are incorporated herein by reference in their entirety.

[0269] For example, Figure 2 As shown, the respiratory assist device includes a housing 100. The housing 100 has an upper housing chassis 102 and a lower housing chassis 202.

[0270] For example, such as Figure 5 As shown, device 10 may include a valve module that controls the flow of oxygen and / or other gases into the gas flow path of device 10 and enables device 10 to regulate the proportion of oxygen entrained in the gas flow. The valve module is formed as a modular unit for easy manufacture, assembly, repair, or replacement, for example, in the event of a malfunction, routine maintenance, or future upgrade / improvement.

[0271] The valve module can be configured to control the oxygen concentration of the gas supplied to the user to a therapeutic oxygen concentration.

[0272] Device 10 may include filter module 1001, and filter module 1001 may include a filter.

[0273] The filter and valve modules described herein can provide varied gas flow paths for the equipment. For example, the valve module can control the flow of oxygen into the equipment via both the valve and filter modules. Alternatively, the valve module can be bypassed by connecting directly to the filter module via an alternative oxygen source through an alternative supply inlet. This may be practical in situations where the user may expect to manually adjust the oxygen supply (e.g., via a wall-mounted supply rotor flow meter).

[0274] It should be understood that the filter modules and valve modules described herein can be used individually in devices used to deliver gas flow. Alternatively, the filter and valve modules can be used together as a filter and valve assembly for improved functionality.

[0275] In the configuration shown, device 10 receives oxygen via at least one of the following: Via valve module (for automatic oxygen regulation via the equipment), or via an alternative gas inlet located on top of the filter (allowing attachment of a manually adjustable oxygen supply, such as a wall-mounted supply regulated by a regulator).

[0276] In some embodiments, an alternative gas inlet may be provided with a therapeutic gas that is not oxygen (e.g., a helium-oxygen mixture).

[0277] Device 10 may include a manifold. The manifold may be located on the housing. The manifold may provide one or more of the following: an oxygen inlet, an alternative gas inlet, and / or an air inlet.

[0278] The manifold can supply oxygen, alternative gases, and / or ambient air to valve modules, filter modules, and / or blowers.

[0279] The manifold can be located upstream of the blower.

[0280] An oxygen inlet or an alternative gas supply inlet can be located on one side of the manifold.

[0281] The manifold allows excess oxygen to overflow into the surrounding environment, and / or allows oxygen to overflow into the surrounding environment if the blower is off and oxygen is continuously supplied. This prevents concentrated oxygen from accumulating in the housing of the equipment.

[0282] A manifold may include one or more baffles that facilitate mixing oxygen and / or alternative gases and air.

[0283] The manifold may also include a filter configured to filter oxygen and / or alternative gases and / or air from the respective inlet.

[0284] The various configurations described are merely exemplary. Any one or more features from any configuration can be used in combination with any one or more features from any other configuration.

[0285] In some embodiments, the motor and / or sensor sub-assemblies (e.g., including one or more sensors) may be located within the device housing.

[0286] The motor and / or sensor subassemblies may be located in recesses on the upper or lower side of the device housing. Alternatively, the recesses may be located at the rear, side, front, or top of the housing. Air and / or oxygen inlets may also be located differently as needed.

[0287] As another example, instead of configuring the humidification chamber and compartment to insert into and remove the humidification chamber from the front of the housing into and from the compartment, the configuration allows the humidification chamber to be inserted into and removed from the side, rear, or top of the housing into and from the compartment.

[0288] As another example, although the filter module is described as being inserted into the housing from above and the valve module from below, either or both of these components can be inserted into any suitable part of the housing, such as the upper, lower, side, front, or rear.

[0289] The filter module and valve module are described with reference to a respiratory assist device that delivers heated and humidified gas to a patient or user.

[0290] The filter module and / or valve module can alternatively be used with devices that do not require a humidifier and therefore do not require a humidification chamber 300. For example, it should be understood that configurations that isolate the motor and gas flow path from electrical and electronic components have wide applications in other types of gas delivery devices.

[0291] As described above, the system may be equipped with a battery, battery pack, or battery module 125. The battery may be provided as part of the aforementioned device, or more generally as part of the system.

[0292] In some situations, reducing the battery / battery pack charge level may be important. For example, during transportation, long-term storage, or in the event of a recall, reducing the battery / battery pack charge level can minimize the risk of damage to the battery / battery pack and / or the device as a whole, and improve the safety of users and others.

[0293] Reducing the battery's charge level can be done manually by the user, but this may require user attention and could result in less accurate charge levels (e.g., the user may under- or over-adjust the expected charge level). Under-adjusting the expected charge level may pose a safety or device risk, while over-adjusting can lead to excessively deep discharge, such as affecting battery life.

[0294] Furthermore, if the device's components are controlled by a controller according to one or more treatment modes, manually reducing the battery level could pose a safety hazard. For example, if a user selects a treatment mode on the device to attempt to manually reduce the battery level, the device may control components to deliver treatment according to that mode. This could lead to safety issues if the device is not securely positioned or closely monitored. Furthermore, if a chamber is connected, humidification can be supplied to the system's conduits and device components, which could cause problems during storage as residual moisture may remain in the system.

[0295] Other manual methods of reducing battery levels, such as discharging the battery through an electrical load (e.g., a resistive load), may pose electrical safety risks to the user and will require the electrical load to be available.

[0296] If the battery is damaged, it may be unsafe for users to discharge it manually using these methods.

[0297] The battery can be configured to supply power to at least one component of the device.

[0298] At least one component may be any component found elsewhere in this specification.

[0299] At least one component may include one or more of the following: • The heater for the humidifier • Flow generator • Heater for the conduit.

[0300] The device's controller can be configured to control at least one component of the device to discharge the battery to a predetermined charge level.

[0301] The term "charge level" is used in this document to describe the energy and / or charge of a battery. However, it should be understood that the term "charge level" can be replaced by any other variable that describes the charge level of a battery and / or relates to the remaining energy in the battery.

[0302] It should be understood that when describing a battery being discharged to a certain level of charge, it can be discharged to a predetermined level of charge within tolerance (e.g., + / - 5%).

[0303] In some configurations, a predetermined charge level indicates the battery's state of charge.

[0304] In some configurations, the predetermined charge level can be, or may be, based on electrical characteristics. For example, it can be a voltage such as the terminal voltage. Electrical characteristics can indicate the battery's state of charge.

[0305] In some configurations, the predetermined charge level can be a predetermined state of charge. That is, the controller can be configured to control the discharge of the battery to a predetermined state of charge.

[0306] The battery status can be, for example, 0% indicating no charging and 100% indicating a full charge, or it can be presented to the user as, for example, 0% indicating 10% actual charging and 100% indicating 90% actual charging.

[0307] The controller can be configured to control the battery charge level to a predetermined charge level.

[0308] The charge level indicates the battery's state of charge. The charge level may additionally or alternatively be based on additional or other battery characteristics.

[0309] The controller can determine a specific charge level of the battery and use that specific charge level to control the battery discharge to a predetermined charge level.

[0310] A battery level (e.g., the state of charge of a battery) can be based on one or more of the following: the battery’s electrical characteristics, the battery’s chemical characteristics, and / or the battery’s physical characteristics.

[0311] A defined power level (e.g., the state of charge of a battery) can be configured to be updated continuously or periodically.

[0312] In some configurations, the controller can communicate with the battery. For example, the controller can determine characteristics directly from the battery. The controller can be configured to determine one or more of the following: • Battery status • The electrical characteristics of the battery, • The chemical characteristics of the battery, and / or • The physical characteristics of a battery.

[0313] In some configurations, alternatively or additionally, the controller may be configured (e.g., from another controller optionally associated with the battery) with one or more of the following: • Battery status • The electrical characteristics of the battery, • The chemical characteristics of the battery, and / or • The physical characteristics of a battery.

[0314] The battery or battery pack may include a battery controller that communicates with the device's controller.

[0315] The battery controller may be provided separately from the controller (i.e., in the battery pack housing), or it may be part of the device's controller.

[0316] In some configurations, the battery controller can be configured to determine one or more of the following: • Battery status • The electrical characteristics of the battery, • The chemical characteristics of the battery, and / or • The physical characteristics of a battery.

[0317] The predetermined power level can be based at least in part on the battery discharge configuration.

[0318] In some configurations, the battery discharge configuration may include a shipping configuration. In a shipping configuration, the predetermined charge level is the shipping configuration charge level. The shipping configuration charge level can be approximately 30% state of charge. For example, as... Figure 6 As shown, at step 501, the device first enters the shipping configuration, and then at step 502, the controller discharges the battery to the shipping configuration power level.

[0319] In some configurations, the battery discharge configuration may include a storage configuration. In some storage configurations, a predetermined charge level is the storage configuration charge level. The storage configuration charge level can be approximately 60% charge. For example, as... Figure 7 As shown, at step 511, the device first enters the storage configuration, and then at step 512, the controller discharges the battery to the storage configuration power level.

[0320] In some storage configurations, the predetermined power level can be based on the expected storage duration. For example, when the expected storage duration is approximately 6 months to approximately 12 months, the predetermined power level could be a first storage configuration power level (optionally approximately 30% power state). As a further example, when the expected storage duration is greater than approximately 12 months, the predetermined power level could be a second storage configuration power level (optionally, approximately 60% power state).

[0321] Users can input the desired storage duration via the user interface. In some configurations, when a user selects a storage configuration, the device may prompt the user (e.g., via a display) to input the desired storage duration via the user interface. For example, as... Figure 8As shown, after the user selects a storage configuration at step 515, the user is prompted to enter the expected storage duration at step 516; if the user enters a storage duration between approximately 6 months and approximately 12 months, then at step 517, the controller discharges the battery to the first storage configuration power level (optionally approximately 30% of the state of charge); if the user enters a storage duration greater than approximately 12 months, then at step 518, the controller discharges the battery to the second storage configuration power level (optionally approximately 60% of the state of charge).

[0322] In some configurations, the battery discharge configuration may include a recall configuration. In some recall configurations, the predetermined charge level may be the recall configuration charge level (optionally, the recall configuration charge level is 10% state of charge). In a recall configuration, the battery can be discharged below the recall configuration charge level. For example, as... Figure 9 As shown, at step 521, the user enters or selects the recall configuration, and then at step 522, the controller discharges the battery to the recall configuration power level (optionally about 10% power level, or below about 10% power level).

[0323] In some configurations, the battery discharge configuration may include a disposal configuration. In some disposal configurations, a predetermined charge level is the disposal configuration charge level. The disposal configuration charge level can be approximately 0% charge. For example, as... Figure 10 As shown, at step 531, the user enters or selects the disposal configuration, and then at step 532, the controller discharges the battery's state of charge to the disposal configuration's state of charge level (optionally approximately 0% state of charge).

[0324] The controller can discharge the battery at a predetermined discharge rate via at least one component of the configured control device. In some configurations, the discharge rate can be the C-rate. The C-rate can be defined as the battery discharge current normalized to the total capacity of the battery.

[0325] In some configurations, the predetermined discharge rate can be based on the battery discharge configuration.

[0326] Controlling at least one component may include one or more of the following: • Activate and / or deactivate at least one component • Control the power draw of at least one component, and / or • Control the output of at least one component.

[0327] In some configurations, control of at least one component can be based on the battery discharge configuration. That is, the controller can control the component in different ways for different battery discharge configurations.

[0328] When the battery discharge configuration is a storage or shipping configuration, the predetermined discharge rate may be a first discharge rate. When the battery discharge configuration is a recall or disposal configuration, the predetermined discharge rate may be a second discharge rate. In some configurations, the second discharge rate may be lower than the first discharge rate (i.e., slower). That is, in such configurations, the predetermined discharge rate in the storage and / or shipping configuration may be higher than the discharge rate in the recall and / or disposal configuration.

[0329] Figure 11 An example of entering the battery discharge configuration at step 561 is shown. At step 562, the controller activates at least one component, controls the power output to the at least one component (i.e., the power supplied to the at least one component), and / or controls the output of the component. At step 563, if the battery has already discharged to a predetermined charge level for a specific mode, then at step 564 the battery is discharged to the predetermined charge level of the battery discharge configuration. If not, the controller continues to control the component at step 562.

[0330] like Figure 11A and Figure 11B As shown, in some configurations, the controller can be configured to activate the component at step 551, increasing the component's power draw and / or increasing the component's output, and then deactivate the component at step 553, decreasing the component's power draw and / or decreasing the component's output. Optionally, the controller can repeatedly perform activation and / or increase and deactivation and / or decrease.

[0331] Repeatedly activating and / or increasing and deactivating and / or decreasing a component can consume more energy (and thus discharge the battery faster) than keeping it activated. For example, when the component is a motor, repeatedly accelerating and decelerating the motor consumes more energy than running it at a constant speed. Similarly, repeatedly increasing and then decreasing the power output of the heater plate and / or heater in a breathing duct can also consume more energy than maintaining a constant power output.

[0332] Optionally, such as Figure 11B As shown in step 552, after the controller activates the component, increases the power draw of the component, and / or increases the output of the component, the controller can be configured to maintain the output of the component (optionally for a predetermined amount of time).

[0333] Optionally, such as Figure 11B As shown in step 552', after the controller deactivates the component, reduces the component's power draw and / or reduces the component's output, the controller can be configured to maintain the component's output (optionally for a predetermined amount of time).

[0334] A flow generator may include a blower. In some configurations, the blower may include a motor.

[0335] In some configurations, the controller can be configured to control the output of the flow generator to discharge the battery to a predetermined charge level. The output of the flow generator can be one or more of the following: the speed of the motor, the flow rate of gas supplied by the flow generator, and / or the pressure supplied by the flow generator.

[0336] In some configurations, the controller can be configured to control the output of the flow generator to: • To achieve the predetermined output of the flow generator, or • Within the predetermined output range of the flow generator, or • It is based on the predetermined output of the flow generator.

[0337] The predetermined output of the flow generator can be greater than the therapeutic output of the flow generator, which is the output when the device is providing treatment to the user.

[0338] The predetermined output range of the flow generator can be a motor speed range of approximately 5,000 RPM to approximately 20,000 RPM, or approximately 23,000 RPM to approximately 26,000 RPM. For example, the predetermined output can be a motor speed of approximately 20,000 RPM.

[0339] When device 10 is configured to provide high-flow therapy, the flow generator output (e.g., motor speed) can be higher than, for example, that of a CPAP device, and therefore the device providing high-flow therapy can discharge the battery at a faster rate than a CPAP device. During high-flow therapy, the flow generator output (e.g., motor speed) may be higher because high-flow therapy is required to supply gas at a high flow rate through the unsealed interface, whereas during CPAP therapy, the flow generator controls the pressure to the sealed interface, and therefore high-flow gas supply is not required. For example, a CPAP device may not have power electronics and / or motor designs suitable for providing higher flow rates and / or higher motor speeds (such as those associated with high-flow therapy).

[0340] The controller can be configured to control the output of the flow generator to repeatedly (and optionally, periodically) increase and decrease the output of the flow generator.

[0341] For example, such as Figure 12 As shown, at step 601, the controller increases the output of the flow generator, and then at step 603, decreases the output of the flow generator. This process can be repeated back to step 601 after step 603. Optionally, the controller can maintain the output of the flow generator between steps 601 and 603 (optionally, for a predetermined amount of time), as shown in more detail below.

[0342] As a further example, such as Figure 12A As shown, at step 601, the controller increases the output of the flow generator. After the controller increases the output of the flow generator, it is configured to maintain the output of the flow generator for a predetermined amount of time at step 602 before subsequently reducing the output of the flow generator at step 603. After the controller reduces the output of the flow generator, at step 602', it is configured to maintain the output of the flow generator for a predetermined amount of time. The predetermined amount of time at step 602 may be the same as or different from the amount of time in step 602'. The predetermined amount of time at step 602 and the predetermined amount of time at step 602' may be based on the battery discharge mode.

[0343] In some configurations, the controller can control the output of the flow generator to increase or decrease within a predetermined output range of the flow generator.

[0344] In some configurations, the controller can be configured to control the output of the flow generator to increase the flow generator's output to: • The first predetermined flow generator output, • Within the output range of the first predetermined flow generator, or • It is above the output of the first predetermined flow generator, and The output of the flow generator was then reduced to: • The output of the second predetermined flow generator, • Within the output range of the second predetermined flow generator, or • It is the output of the second predetermined flow generator.

[0345] Reducing the output of a flow generator can include allowing the flow generator's motor to idle, or it can include controlling the flow generator's output to reduce it.

[0346] In some configurations, the flow generator may include a braking system configured to reduce the output of the flow generator. The braking system can brake the motor of the flow generator; for example, the braking system can be operated to reduce the motor speed.

[0347] The controller can be configured to control the power delivered to (e.g., provided to) the humidifier heater and / or duct heater. In some configurations, the controller can control the power delivered to the humidifier heater and / or duct heater by adjusting the current or voltage delivered to it. In some configurations, the controller can control the power delivered to the humidifier heater and / or duct heater via a digital control scheme. For example, the controller can be configured to control the humidifier heater and / or duct heater via pulse width modulation. In some configurations, the controller can be configured to provide signals to the humidifier heater and / or duct heater to control the power delivered to it.

[0348] The controller can be configured to control the power delivered to the humidifier heater and / or duct heater to discharge the battery to a predetermined charge level. For example, the controller can be configured to control the power delivered to the humidifier heater and / or duct heater to achieve a predetermined output of the humidifier heater and / or duct heater. As a further example, the controller can be configured to control the power delivered to the humidifier heater and / or duct heater to achieve a predetermined heater power, or within a predetermined heater power range, or above a predetermined heater power.

[0349] In some configurations, the predetermined power of the heater may be greater than the therapeutic power, which is the power of the heater when the device is providing treatment to the user. In some configurations, the predetermined power of the heater may correspond to a user's safety threshold. In some configurations, the predetermined power of the heater may be based at least in part on heater characteristics (e.g., physical dimensions, location, heater type (e.g., heating wire or ceramic heating element), and / or electrical characteristics such as the heater's electrical ratings).

[0350] The controller can be configured to control the power delivered to the humidifier heater and / or duct heater to repeatedly and / or periodically increase and decrease. For example, as Figure 13 As shown, at step 701, before reducing the power delivered to the humidifier heater and / or duct heater in subsequent step 703, the controller increases the power delivered to the humidifier heater and / or duct heater. This process can be repeated, for example, moving to step 701 after step 703. Optionally, the controller can maintain the power delivered to the humidifier heater and / or duct heater between steps 701 and 703 (optionally for a predetermined amount of time), as shown in more detail below.

[0351] As a further example, such as Figure 12AAs shown, at step 701, the controller increases the power delivered to the humidifier heater and / or the duct heater. After increasing the power, the controller is configured to maintain the power delivered to the humidifier heater and / or the duct heater for a predetermined amount of time at step 702, and then decrease the power delivered to the humidifier heater and / or the duct heater at step 703. At step 702', after decreasing the power delivered to the humidifier heater and / or the duct heater, the controller is configured to maintain the power delivered to the humidifier heater and / or the duct heater for a predetermined amount of time. The predetermined amount of time at step 702 may be the same as or different from the amount of time in step 702'. The predetermined amount of time at step 702 and the predetermined amount of time at step 702' may be based on the battery discharge mode.

[0352] In some configurations, the increase and decrease of delivered power can be within the target gas temperature range and / or the humidity heater temperature range and / or the duct heater temperature range.

[0353] The controller can be configured to control the power delivered to the humidifier heater and / or duct heater to increase the power delivered to: • The first predetermined power delivered to the humidifier heater and / or the first predetermined power delivered to the duct heater, • Within a first predetermined power range delivered to the humidifier heater and / or within a first predetermined power range delivered to the duct heater, or • Above the first predetermined power delivered to the humidifier heater and / or above the first predetermined power delivered to the duct heater, and Subsequently, the power delivered to the humidifier heater and / or the power delivered to the duct heater is reduced to: • A second predetermined power delivered to the humidifier heater and / or a second predetermined power delivered to the duct heater, • Within a second predetermined power range delivered to the humidifier heater and / or within a second predetermined power range delivered to the duct heater, or • Under a second predetermined power delivered to the humidifier heater and / or under a second predetermined power delivered to the duct heater.

[0354] The controller can be configured to control the power delivered to the humidifier heater and / or duct heater to achieve a target gas temperature. The target gas temperature can be a gas temperature detected at one or more locations. The one or more locations may include: • Humidifier inlet • Humidifier outlet • Position in the catheter, and / or • The position of the patient end of the catheter.

[0355] The device may include at least one temperature sensor. The temperature sensor may be configured to measure the gas temperature at one or more locations.

[0356] In some configurations, the target gas temperature can be higher than the treatment temperature. The treatment temperature can be the gas temperature at which the device provides treatment to the user. In some configurations, the target gas temperature can correspond to the user's safety threshold.

[0357] In some configurations, the controller can be configured to control the power delivered to the humidifier heater and / or duct heater to achieve a target heater plate temperature. The target heater plate temperature may be, for example, less than about 50 degrees Celsius, less than about 60 degrees Celsius, or less than about 70 degrees Celsius.

[0358] In some configurations, the controller can be configured to control the power delivered to the humidifier heater to achieve a target humidifier heater temperature range and / or control the power delivered to the duct heater to achieve a target duct heater temperature range, wherein the target humidifier heater temperature range and / or the target duct heater temperature range is approximately 50 degrees Celsius to approximately 80 degrees Celsius, or approximately 50 degrees Celsius to approximately 70 degrees Celsius, or approximately 60 degrees Celsius to approximately 70 degrees Celsius.

[0359] The device may include at least one heater temperature sensor. The at least one heater temperature sensor may be configured to measure the temperature of the humidifier heater and / or the duct heater.

[0360] In some configurations, the heater temperature can be higher than the treatment heater temperature. The treatment temperature can be the heater temperature when the device provides treatment to the user. In some configurations, the heater temperature can correspond to a user safety threshold (e.g., a safety threshold for contact with the catheter surface or heater plate surface).

[0361] The controller can be configured to repeatedly and / or periodically increase and decrease the target gas temperature and / or heater temperature.

[0362] For example, such as Figure 14 As shown, at step 801, before decreasing the target gas temperature and / or target heater temperature in subsequent step 803, the controller increases the target gas temperature and / or target heater temperature. This process can be repeated, for example, moving to step 801 after step 803.

[0363] Optionally, the controller may maintain the target gas temperature and / or the target heater temperature (optionally for a predetermined amount of time) between steps 801 and 803, as shown in more detail below.

[0364] As a further example, such as Figure 14A As shown, at step 801, the controller increases the target gas temperature and / or the target heater temperature. After increasing the target gas temperature and / or the target heater temperature, the controller is configured to maintain the target gas temperature and / or the target heater temperature for a predetermined amount of time at step 802, and then decrease the target gas temperature and / or the target heater temperature at step 803. At step 802', after the controller decreases the target gas temperature and / or the target heater temperature, the controller is configured to maintain the target gas temperature and / or the target heater temperature for a predetermined amount of time. The predetermined amount of time at step 802 may be the same as or different from the amount of time in step 802'. The predetermined amount of time at step 802 and the predetermined amount of time at step 802' may be based on the battery discharge mode.

[0365] In some configurations, the increase and decrease of the target gas temperature and / or the target heater temperature can be within the target gas temperature range and / or the humidity heater temperature range and / or the duct heater temperature range.

[0366] Increasing or decreasing the target gas temperature and / or the target heater temperature can provide a safe way to discharge the battery. For example, if the temperature is controlled within a range that is safe for the user (e.g., at least a brief touch is safe without burns), the device can be guaranteed to be safe during discharge.

[0367] The controller can be configured to control the target gas temperature and / or the target heater temperature to increase to: • First predetermined target gas temperature and / or first predetermined target heater temperature • Within the first predetermined target gas temperature range and / or within the first predetermined target humidity heater temperature range and / or within the first predetermined target duct humidity heater temperature range, or • Above the first target gas temperature and / or the first target heater temperature, and The output of the humidifier heater and / or duct heater is then reduced to: • A second predetermined target gas temperature and / or a second predetermined target heater temperature • Within the second predetermined target gas temperature range and / or within the second predetermined target humidity heater temperature range and / or within the second predetermined target duct humidity heater temperature range, or • Below the second target gas temperature and / or the second target heater temperature.

[0368] The controller can be configured to control the output of the flow generator to increase the output of the flow generator to: • The first predetermined flow generator output, • Within the first predetermined flow generator output range, or • Above the first predetermined flow generator output, and The output of the flow generator was then reduced to: • The output of the second predetermined flow generator.

[0369] • Within the output range of the second predetermined flow generator, or • Below the output of the second predetermined flow generator.

[0370] It should be understood that the various methods of discharging the battery described above can be combined and used in any combination. For example, Figure 11A-14A The steps shown can be combined with Figure 11A-14A Other steps in the process are performed sequentially or cyclically.

[0371] It should be understood that various methods can be used to discharge different components simultaneously. For example, one or any combination of the humidifier heater, the duct heater, and the flow generator can be controlled simultaneously or sequentially to discharge the battery.

[0372] The controller can be configured to shut down the device once the battery has been discharged to a predetermined charge level.

[0373] Once the battery discharge process is complete and the battery level is below a predetermined level (e.g., exceeding acceptable margin), the controller can charge the battery to the predetermined level. Charging the battery may mean that the user must connect the device to AC power (and the device can provide a prompt to remind the user to do so). The battery can be charged at the normal charging rate or at a reduced charging rate to avoid overcharging the predetermined level.

[0374] The device may include at least one display. The display may communicate with the controller. The display may be part of a display module, as described in more detail above. In some configurations, the controller may be configured to control the display to show a notification that the battery is discharging. In some configurations, the controller may be configured to control the display to show the battery discharge configuration.

[0375] In some configurations, the display may also indicate that the battery needs to be replaced or recalled. If the battery needs to be replaced or recalled, the display may also prompt the user to initiate a discharge process (e.g., initiating battery discharge to a predetermined charge level). In some configurations, the device can receive the message that the battery needs to be replaced or recalled from a remote device.

[0376] Figure 15 An example of a display showing options for users to select different battery discharge configurations is shown.

[0377] Figure 15A An example of a discharge menu displayed on the screen during the discharge process is shown. The discharge menu can display warnings to the user, telling them not to use the device, as well as an indication that the battery is discharging.

[0378] The discharge menu may also include a cancel button to allow the process to be canceled.

[0379] In some configurations, the device may include a user interface. For example, the user interface may be a touch interface; the touch interface may be part of the display.

[0380] In some configurations, the device can be configured to allow the user to initiate battery discharge to a predetermined charge level via a user interface. In some configurations, the device can be further configured to allow the user to initiate battery discharge to a predetermined charge level based on one or more of the following: • The user provides credentials associated with permission to initiate battery discharge to a predetermined charge level; and / or • Optionally, the service menu can be accessed by providing a series of inputs via the user interface.

[0381] In some configurations, the device can be configured to allow the user to initiate battery discharge to a predetermined charge level based on messages from a remote device.

[0382] The device may not present a user interface that allows battery discharge until the device receives a message from the device.

[0383] The message can be based on the device's serial number and / or the battery's serial number.

[0384] In some configurations, the device can be set with a list of serial numbers for batteries that may require repair or recall. The device can then automatically enter the recalled battery discharge configuration or prompt the user to enter the recalled battery discharge configuration.

[0385] For example, if the battery's serial number matches a list of serial numbers provided as part of a message from the device, an option can be provided to the user for resetting the battery discharge configuration.

[0386] As a further example, if a message from the device indicates that the device will be returned to the supplier, the device can be configured for shipment.

[0387] In some configurations, users can use a user interface to cancel battery discharge. In other configurations, the display may include interactive elements configured to trigger a controller to cancel battery discharge.

[0388] The device can be configured to determine whether a patient is connected to a patient interface. In some configurations, the device can determine whether a patient is connected to a user interface based on one or more of the following: gas flow rate, pressure data, and / or gas flow resistance.

[0389] In some configurations, the controller can be configured to cancel battery discharge when the device determines that a patient is connected to the user interface.

[0390] The determination of patient connection can be as described in WO / 2020 / 178746, which is incorporated herein by reference.

[0391] The humidifier can be configured to be pneumatically connected to a flow generator. In some configurations, the humidifier can be further configured to amplify the gas flow generated by the humidification flow generator.

[0392] The catheter can be connected to the outlet of the device. The catheter can be one or more of the following: an expiratory catheter, an inspiratory catheter, and / or a patient supply catheter. In some configurations, the catheter can be pneumatically connected to the device. In some configurations, the catheter can form part of the gas flow path.

[0393] In some configurations, the conduit is a discharge conduit, as described in more detail below.

[0394] The device may include a heater plate as a heater. In some configurations, the heater plate may be configured to heat the contents of the humidification chamber.

[0395] In some configurations, the device can be configured to control at least one component of the device to discharge the battery to a predetermined charge level when the device receives a message from the apparatus. That is, as... Figure 16 As shown, at step 901, the device receives a message from the apparatus, and then at step 902, after the device receives the message, the controller controls at least one component to discharge the battery to a predetermined charge level.

[0396] In some configurations, the device may include at least one communication module configured to receive messages from the device.

[0397] like Figure 17 As shown, at step 920, at least one communication module receives a message from the device. After the device receives the message, at step 902, the controller controls at least one component to discharge the battery to a predetermined charge level.

[0398] The device can be one or more, such as a server, computer, telephone, and / or tablet. In some configurations, the device can be configured to select one of multiple connected devices by a device ID associated with each device.

[0399] In some configurations, the device can be configured to receive input from a user interface and, based on that input, communicate messages to the device. For example, the device can receive input from the device's user interface and communicate messages to the device; upon receiving a message from the device, the controller then controls at least one component of the device to discharge the battery to a predetermined charge level.

[0400] In some configurations, the battery of the respiratory assist device can be prepared by controlling at least one component of the device to discharge the battery to a predetermined charge level. The at least one component may include, for example, a heater for a humidifier, a flow generator, or a conduit configured to be connected to the device, the conduit including the heater.

[0401] In some configurations, a discharge conduit can be provided for connection to a device. Specifically, the discharge conduit can be used to discharge the battery.

[0402] For example, a discharge catheter can use more power but generate less heat, safely dissipating more energy in a more secure manner, such as without generating excessive heat or damaging the catheter. When using a discharge catheter, the humidifier heater can be disabled. A discharge catheter may include a heater wire with a resistive load and / or higher resistance (as opposed to a normal catheter used for treatment).

[0403] The discharge conduit can be connected from the humidifier outlet to the chamber inlet to form a loop for gas recirculation within the system.

[0404] If the discharge mode is connected to the device, the treatment mode can be disabled.

[0405] In the preceding description, when elements or wholes having known equivalents are mentioned, such equivalents are included as if they were mentioned separately.

[0406] When the device is powered on and the battery is in a battery charging configuration, the device may present a message to the user. The message may indicate the current battery charging configuration, and / or the message may be a reminder to charge the battery.

[0407] When the device is powered on after being in any of the storage, recall, or shipment configurations, a message may be presented to notify the user to charge the battery. In some configurations, the device may prevent use of the device until the battery is charged to a predetermined level (e.g., 70%, 80%, 90%, or 100%).

[0408] When connected to a device, the battery can be charged via the device. The device may include a battery charging circuit configured to charge the battery. The battery charging circuit may be configured to convert the device's input voltage into a battery charging voltage. The battery charging circuit may also monitor battery parameters to determine the charge level (as described above).

[0409] In some configurations, the battery can be charged via a wired connection between the battery and the charger (e.g., via a USB connection through a USB port on the battery pack). The charger can be the device described above or an external charger.

[0410] In some configurations, the battery can be charged by a battery charging station to which the battery (and optionally multiple batteries) can be connected.

[0411] While embodiments have been described with reference to several illustrative examples, those skilled in the art will understand that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the preferred embodiments should be considered merely descriptive and not for limiting purposes, and the technical scope of the invention is not limited to these embodiments. Furthermore, the invention is not limited by the detailed description thereof, but by the appended claims, and all differences within that scope will be construed as included in this disclosure.

[0412] Many modifications will be apparent to those skilled in the art without departing from the scope of the invention as described herein with reference to the accompanying drawings.

Claims

1. A respiratory assist device, comprising: A battery configured to supply power to at least one component of the device. The at least one component includes one or more of the following: Humidifier heater Flow generator, or The catheter, comprising a catheter heater, and A controller configured to control at least one component of the device to discharge the battery to a predetermined charge level.

2. The respiratory assist device according to claim 1, wherein, The controller communicates with the battery, and the controller is configured to determine one or more of the following: the battery's state of charge, the battery's electrical characteristics, the battery's chemical characteristics, and / or the battery's physical characteristics.

3. The respiratory assist device according to claim 1, wherein, The controller is configured with one or more of the following: the battery's state of charge, the battery's electrical characteristics, the battery's chemical characteristics, and / or the battery's physical characteristics.

4. The respiratory assist device according to claim 1, wherein, The battery includes a battery controller that communicates with the controller of the device, and wherein the battery controller is configured to determine one or more of the following: The battery's state of charge, The electrical characteristics of the battery, The chemical characteristics of the battery, and / or The physical characteristics of the battery.

5. The respiratory assist device according to claims 1-4, wherein, The predetermined power level is an electrical characteristic; optionally, the predetermined power level is voltage.

6. The respiratory assist device according to claims 1 to 4, wherein, The predetermined charge level indicates the battery's charge status.

7. The respiratory assist device according to claims 1 to 4, wherein, The predetermined power level is a predetermined power state, and wherein the controller is configured to discharge the battery to the predetermined power state.

8. The respiratory assist device according to claims 1-4, wherein, The predetermined power level is based, at least in part, on at least one battery discharge configuration.

9. The respiratory assist device according to claim 8, wherein, The at least one battery discharge configuration includes a shipping configuration, wherein in the shipping configuration, the predetermined charge level is the shipping configuration charge level.

10. The respiratory assist device according to claim 8, wherein, The at least one battery discharge configuration includes a storage configuration, wherein the predetermined charge level in the storage configuration is a storage configuration charge level.

11. The respiratory assist device according to claim 10, wherein, In the storage configuration, the predetermined power level is based on the expected storage duration.

12. The respiratory assist device according to claim 11, wherein, When the expected storage duration is approximately 6 months to approximately 12 months, the predetermined power level is the first storage configuration power level.

13. The respiratory assist device according to claim 12, wherein, The first storage configuration has a power level of approximately 30%.

14. The respiratory assist device according to claim 11, wherein, Users can input the expected storage duration via the user interface.

15. The respiratory assist device according to claim 11, wherein, When the user selects the storage configuration, the device prompts the user to optionally access the expected storage duration via a display or user interface.

16. The respiratory assist device according to claim 8, wherein, The at least one battery discharge configuration includes a recall configuration, wherein in the recall configuration, the predetermined charge level is the recall configuration charge level.

17. The respiratory assist device according to claim 8, wherein, The controller is configured to control at least one component of the device to discharge the battery at a predetermined discharge rate.

18. The respiratory assist device according to claim 17, wherein, The predetermined discharge rate is based on the battery discharge configuration.

19. The respiratory assist device according to claim 8, wherein, When the at least one battery discharge configuration is a storage configuration or the storage configuration or the shipping configuration or the shipping configuration, the predetermined discharge rate is a first discharge rate.

20. The respiratory assist device according to claim 18, wherein, When the at least one battery discharge configuration is a recall configuration or a disposal configuration, the predetermined discharge rate is a second discharge rate.

21. The respiratory assist device according to claim 20, wherein, The second discharge rate is lower than the first discharge rate.

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