ResMed Patente

The present invention discloses a control algorithm of a CPAP system or providing air at positive pressure for respiratory therapy to a patient, the CPAP system comprising: a respiratory pressure therapy - RPT - device configured to supply a flow of air at a therapeutic pressure; a patient interface forming a plenum chamber pressurizable to the therapeutic pressure, the patient interface including a seal-forming structure constructed and arranged to form a seal with a region of a patient's face surrounding an entrance to a patient's airways; and an air delivery tube configured to pass the fl ow of air at the therapeutic pressure from the RPT device to the patient interface, the control algorithm comprising: measuring ambient humidity; setting a target gas temperature based on the measured ambient humidity and a preferred gas temperature setting from the patient; measuring the gas temperature at the patient interface; and controlling power to the controllable heater to correct any differences between the target gas temperature and the measured gas temperature.

The present invention discloses an expiratory flow resistor to permit a stenting pressure above atmospheric pressure in a respiratory conduit comprising a respiratory conduit having an expiratory flow channel, and an aperture of the respiratory conduit to release a flow of the expiratory flow channel to atmosphere. Further, it comprises a cover component. The cover component is configured to selectively block the aperture, wherein the cover component is flexible and is loaded with a tension so that at least a first portion of the cover component blocks the aperture unless a pressure of the expiratory flow channel exceeds a pressure threshold that is above atmospheric pressure.

The present invention discloses a heat and moisture exchanger (HME) configured to engage the patient's nose while retrofitted into a plenum chamber of a patient interface, the HME comprising, a frame configured to engage the patient's septum in use; a cradle coupled to the frame and including at least one opening, the cradle configured to be positioned proximate to and outside of the patient's nares, in use; and an HME material positioned over and/or within the at least one opening, the HME material configured to be spaced apart from the patient's nares so as to form a gap between the HME material and the patient's nares; and wherein the HME is configured to engage and secure to the patient's nose independently of any other structure.

The present invention discloses a patient interface for sealed delivery of a flow of air at a continuously positive pressure with respect to ambient air pressure to an entrance of a patient's nares and to an entrance of the patient's mouth, wherein the patient interface is configured to maintain a therapy pressure in a range of about 4 cmH2O to about 30 cmH2O above ambient air pressure in use, throughout a patient's respiratory cycle, while the patient is sleeping, to ameliorate sleep disordered breathing; said patient interface comprising: a plenum chamber at least partially forming a cavity pressurisable to a therapeutic pressure of at least 6 cmH2O above ambient air pressure, said plenum chamber including at least one plenum chamber inlet port sized and structured to receive a flow of air at the therapeutic pressure for breathing by a patient; and a seal-forming structure comprising a textile membrane constructed and arranged to form a seal with a region of the patient's face surrounding the entrance to the patient's nares and the entrance to the patient's mouth, the seal-forming structure comprising: a nasal portion configured to at least partially surround the entrance to the patient's nares, and an oral portion configured to at least partially surround the entrance to the patient's mouth, wherein said textile membrane has at least one hole such that the flow of air at said therapeutic pressure is delivered to at least an entrance to the patient's nares and/or the patient's mouth, the seal-forming structure constructed and arranged to maintain said therapeutic pressure in the cavity throughout the patient's respiratory cycle in use, wherein the textile membrane includes a three-dimensional shape having multiple curvatures, wherein the seal-forming structure further includes a flexible support structure for holding the textile membrane in the three-dimensional shape.

The present invention discloses a cushion assembly for a patient interface for sealed delivery of a flow of air at a continuously positive pressure with respect to ambient air pressure to an entrance to the patient's airways including at least entrance of a patient's nares, wherein the patient interface is configured to maintain a therapy pressure in a range of about 4 cmH20 to about 30 cmH20 above ambient air pressure in use, throughout the patient's respiratory cycle, while the patient is sleeping, to ameliorate sleep disordered breathing, the cushion assembly comprising: a foam cushion; and an elastomeric support portion configured to support the foam cushion and comprising a pair of legs formed by a bend in the elastomeric support portion, one of the legs being a folded section to which the foam cushion is attached, wherein a width of the folded section varies in different locations of the cushion assembly to provide varying levels of support to the foam cushion in different regions of the cushion assembly, wherein the folded section is designed to allow the foam cushion to overhang the folded section to varying degrees.

A system includes a respiratory device, a mask, a sensor, and a control system. The respiratory device is configured to supply pressurized air. The mask is coupled to the respiratory device and configured to engage a user during a sleep session to aid in directing the supplied pressurized air to the user. The sensor is configured to generate physiological data associated with the user. The control system is configured to analyze the physiological data to determine a first sleep stage of the user, and based on the determined first sleep stage of the user, (i) set a range of pressures for the respiratory device to supply the pressurized air, and (ii) set a rate of change of the pressurized air for the respiratory device to use when changing the supplied pressurized air from a first pressure within the range of pressures to a second pressure within the range of pressures.

The present invention relates to a water reservoir for an apparatus for humidifying a flow of breathable gas, comprising a reservoir body, the reservoir body comprising a conductive portion provided at a lower portion of the reservoir body, wherein the conductive portion includes a peripheral interfacing portion structured and arranged to connect the conductive portion to one or more walls of the reservoir body, wherein the peripheral interfacing portion includes an intermediate portion extending from a sloped portion and an end portion that extends from the intermediate portion, wherein the end portion is bent so as to be at least inclined with respect to the intermediate portion, and wherein a radius of curvature of the bend of the end portion is substantially equal to or greater than a thickness of the conductive portion at the end portion.

The present invention discloses a respiratory pressure therapy device comprising: an enclosure including a first portion and a second portion, the second portion configured to engage the first portion in an assembled configuration, the first portion including a first interior surface, a first exterior surface and a first intermediate surface located between the first interior surface and the first exterior surface, the second portion including a second interior surface, a second exterior surface and a second intermediate surface located between the second interior surface and the second exterior surface, and a constrainment arrangement comprising respective interior and exterior surfaces of the first and second portions being configured to abut against each other so as to limit lateral movement of the first portion and the second portion.

The present invention relates to a plenum chamber insert for a patient interface for providing a flow of air at a therapeutic pressure to a patient for breathing. The plenum chamber insert comprises: a heat and moisture exchanger (HMX) material configured to receive and retain water from gas exhaled by the patient and to desorb retained water into the flow of air at the therapeutic pressure passing through the HMX material during use; and a frame, which comprises a plenum chamber insert port; an anterior insert frame and a posterior insert frame attached to the anterior insert frame, and the HMX material being secured between the anterior insert frame and the posterior insert frame; and an anterior insert frame spacer extending from the anterior insert frame and contacting the HMX material to space the HMX material away from the anterior insert frame such that a gap is formed between the anterior insert frame and the HMX material.

The present invention relates to a patient interface comprising: a plenum chamber being formed entirely from a flexible material, the plenum chamber including: a cavity, an inlet port, and a groove formed on a surface of the plenum chamber outside the cavity and exposed to ambient pressure, the groove formed radially outside of the inlet port, and the groove forming an enclosed perimeter; a seal-forming structure; a positioning and stabilizing structure comprising: a frame coupled to the plenum chamber, the frame including, a central portion including an inner perimeter and an outer perimeter removably positionable within the groove, the inner perimeter configured to be spaced apart from the inlet port while positioned within the groove, a pair of upper arms, and a pair of lower arms; and headgear straps coupled to the pair of upper arms and the pair of lower arms of the frame.

The present invention disclodses a patient interface for sealed delivery of a flow of air at a continuously positive pressure with respect to ambient air pressure to an entrance to a patient's airways including at least entrance of a patient's nares, wherein the patient interface is configured to maintain a therapy pressure in a range of about 4 cmH2O to about 30 cmH2O above ambient air pressure in use, throughout a patient's respiratory cycle, while the patient is sleeping, to ameliorate sleep disordered breathing; said patient interface comprising: a cushion assembly including a shell and a seal-forming structure provided to the shell and structured to form a seal with a patient's nose and/or mouth, the shell and the seal-forming structure cooperating to form a plenum chamber, the seal-forming structure being constructed of a relatively flexible or pliable material, and the shell being constructed of a relatively rigid material; a shroud formed of a relatively rigid material, the cushion assembly being repeatedly engageable with and removably disengageable from the shroud via a snap-fit connection; and a headgear having a pair of straps; a headgear connector including a shroud connecting portion and a pair of headgear connector arms structured to connect to respective headgear straps of the headgear, the headgear connector comprising flexible portions.

The present invention refers to an intermediate component for pneumatically connecting an air delivery tube to a respiratory treatment apparatus, the air delivery tube configured to deliver breathable gas provided by the respiratory treatment apparatus to a patient interface, said intermediate component comprising: an outlet end configured to connect to an air delivery tube; an inlet end configured to connect to the respiratory treatment apparatus; a sound port configured to facilitate propagation of sound outside of the intermediate component; and a sound permeable membrane configured to cover the port.

The present invention discloses a patient interface comprising: a plenum chamber pressurisable to a therapeutic pressure of at least 6 cmH2O above ambient air pressure, wherein the plenum chamber comprises an inlet configured to receive a flow of air at the therapeutic pressure for breathing by a patient; a seal-forming structure configured to form a seal with a region of the patient's face surrounding an entrance to the patient's airways, wherein the seal-forming structure is configured to maintain said therapeutic pressure in the plenum chamber throughout the patient's respiratory cycle in use; a vent structure configured to allow a flow of gases exhaled by the patient from an interior of the plenum chamber to ambient, wherein the vent structure is configured to maintain the therapeutic pressure in the plenum chamber in use; and a positioning and stabilising structure to provide a force to hold the seal-forming structure in a therapeutically effective position on the patient's head, wherein the positioning and stabilising structure comprises at least one headgear strap, wherein the at least one headgear strap comprises a diffuser, wherein the diffuser is positioned in use to diffuse the flow of gases exiting the vent structure.

Disclosed is a mask system configured to deliver pressurized breathable gas to a patient for continuous positive airway pressure therapy of sleep disordered breathing conditions. The mask system comprises a sealing portion having a nares portion and a mouth portion, where the nares portion and the mouth portion are formed in a single piece; a vent disposed to vent exhaled gas from the nares portion and the mouth portion; a frame; a positioning and stabilizing structure in the form of a headgear adapted to maintain the mask system in sealing engagement with the nares and mouth of the patient. The mouth portion comprises a swivel connector disposed in a front aperture of the mouth portion, the swivel connector being adapted to connect to a tube connector; wherein the mouth portion comprises a decoupling portion that is disposed between the frame and the swivel connector.

The present invention relates to a processing system for determining a tailored coaching program for a patient and a personalised therapy using a medical device. The processing system comprises memory storing a plurality of demographic questions and a plurality of subjective questions, and a computing system including at least one hardware processor coupled to the memory. The computing system is configured to transmit, to a web or mobile application executing on a local external device, at least one demographic question and at least one subjective question stored in the memory, and to receive, from the web or mobile application executing on the local external device, answers to the at least one demographic question and at least one subjective question transmitted to the web or mobile application. The computing system is further configured to transmit, to a mobile device configured to execute an application for communicating with the medical device, a notification indicating that unanswered questions are available, and to receive, from the mobile device, a request for the unanswered questions; responsive to the request, transmit, to the mobile device, at least one demographic question and at least one subjective question stored in the memory, and to receive, from the mobile device, answers to the at least one demographic question and the at least one subjective question transmitted to the mobile device. Furthermore, the computing system is configured to perform advanced analytics to determine, based on (1) the answers received from the web or mobile application and the mobile device and (2) answers received from a plurality of other patients, a tailored coaching program for the patient and personalised therapy using the medical device.

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