# US 2026/0144948 A1 · Cpap system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0144948 A1 - Document ID: US20260144948A1 - Status: Published application - Kind: A1 - Application number: 19/177,838 - Filed: 2025-04-14 - Published: 2026-05-28 - Earliest claimed: 2019-04-17 - Assignees: ResMed Pty Ltd - Applicants: ResMed Pty Ltd - Inventors: Jeremy William WORKMAN; Ernie Wei-Chih TSAI; Michael James DENT; Max William Andrew KABILAFKAS; Dimitri Marco MAURER; Andrew CHAN; Justin John FORMICA; Hargopal VERMA; Katarzyna Anna KROL-MAZUR; Chia Ik TAN; Jessie Cindy MAIKIM - Web page: https://patentgrep.com/patent/US20260144948A1 ## CPC - A61M 16/024: {including calculation means, e.g. using a processor} - A61B 5/0816: {Measuring devices for examining respiratory frequency (measuring frequency of electric signals G01R23/00)} - A61B 5/0826: {Detecting or evaluating apnoea events (sleep apnoea A61B5/4818)} - A61B 5/087: Measuring breath flow - A61B 5/4836: {Diagnosis combined with treatment in closed-loop systems or methods (A61B5/0036 takes precedence)} - A61M 16/0066: {Blowers or centrifugal pumps} - A61M 16/022: {Control means therefor} - A61M 16/0816: {Joints or connectors} - A61M 16/107: {in the inspiratory path} - A61M 16/108: {before being humidified or mixed with a beneficial agent} - A61M 16/1085: {after being humidified or mixed with a beneficial agent} - A61M 16/109: {the humidifying liquid or the beneficial agent} - A61M 16/1095: {in the connecting tubes} - A61M 16/16: Devices to humidify the respiration air {(A61M16/1045 takes precedence)} - A61M 16/161: {with means for measuring the humidity} - H05B 1/0244: {Heating of fluids (H05B1/0247 takes precedence)} - A61M 16/0069: {the speed thereof being controlled by respiratory parameters, e.g. by inhalation} - A61M 16/06: Respiratory or anaesthetic masks - A61M 16/0683: {Holding devices therefor} - A61M 16/0875: {Connecting tubes} - A61M 16/1055: {bacterial} - A61M 2016/0027: {pressure meter} - A61M 2016/0039: {in the inspiratory circuit} - A61M 2205/0233: Conductive materials, e.g. antistatic coatings for spark prevention - A61M 2205/14: Detection of the presence or absence of a tube, a connector or a container in an apparatus - A61M 2205/15: Detection of leaks - A61M 2205/18: with alarm - A61M 2205/21: insensitive to tilting or inclination, e.g. spill-over prevention - A61M 2205/3331: Pressure; Flow - A61M 2205/3365: Rotational speed - A61M 2205/3368: Temperature - A61M 2205/3553: remote, e.g. between patient's home and doctor's office - A61M 2205/3584: using modem, internet or Bluetooth® - A61M 2205/3592: using telemetric means, e.g. radio or optical transmission - A61M 2205/3653: by Joule effect, i.e. electric resistance - A61M 2205/3673: thermo-electric, e.g. Peltier effect, thermocouples, semi-conductors - A61M 2205/42: Reducing noise - A61M 2205/505: Touch-screens; Virtual keyboard or keypads; Virtual buttons; Soft keys; Mouse touches - A61M 2205/52: with memories providing a history of measured variating parameters of apparatus or patient - A61M 2205/581: by audible feedback - A61M 2205/582: by tactile feedback - A61M 2205/583: by visual feedback - A61M 2205/6018: providing set-up signals for the apparatus configuration - A61M 2205/6027: Electric-conductive bridges closing detection circuits, with or without identifying elements, e.g. resistances, zener-diodes - A61M 2205/7545: for solid matter, e.g. microaggregates - A61M 2207/00: Methods of manufacture, assembly or production - A61M 2230/46: Resistance or compliance of the lungs - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL ## Abstract An apparatus for humidifying a flow of breathable gas includes a water reservoir and a water reservoir dock forming a cavity structured and arranged to receive the water reservoir in an operative position. The water reservoir comprises a reservoir base including a cavity structured to hold a volume of water, the reservoir base including a main body and a thermally conductive portion provided to the main body. The thermally conductive portion comprises a combined layered arrangement including a metal plate and a thin film, the thin film comprising a non-metallic material and including a wall thickness of less than about 1 mm. The thin film is adapted to form at least a bottom interior surface of the water reservoir exposed to the volume of water, and the metal plate is adapted to form a bottom exterior surface of the water reservoir. ## Claims ### Claim at position 1 -20. (canceled) ### Claim 21 An intermediate component for pneumatically coupling a water reservoir located in a water reservoir dock to an air delivery tube for delivering a supply of pressurized breathable air to a patient in a positive pressure range suitable for treatment of a respiratory disorder, the intermediate component comprising: a main body configured to be removably coupled to the reservoir dock, the intermediate component being non-rotatably coupled to the water reservoir dock and the air delivery tube in an operational configuration, the main body having an inlet opening to be sealingly engaged with the water reservoir and an outlet opening to be releasably locked to and pneumatically connected to the air delivery tube in the operational configuration, and a resilient arm configured to provide a removable snap-fit connection with the water reservoir dock. ### Claim 22 (depends on 21) The intermediate component according to claim 21, wherein the inlet opening is surrounded by an inlet seal configured to form a seal with an outlet tube of the water reservoir in the operational configuration. ### Claim 23 (depends on 21) The intermediate component according to claim 21, wherein the main body comprises a tubular portion that forms the outlet opening. ### Claim 24 (depends on 21) The intermediate component according to claim 21, further comprising a tube retaining portion configured and arranged to engage a retainer part provided to the air delivery tube to releasably lock the intermediate component to the air delivery tube in the operational configuration, and wherein the tube retaining portion comprises a hole configured and dimensioned to receive the retainer part of the air delivery tube. ### Claim 25 (depends on 22) The intermediate component according to claim 22, wherein the inlet seal comprises a bellows-type arrangement that is resiliently compressible to provide decoupling between the intermediate component and the water reservoir. ### Claim 26 (depends on 22) The intermediate component according to claim 22, wherein an axis of the inlet opening at the inlet seal is arranged at about 90° with respect to an axis of the outlet opening. ### Claim 27 (depends on 23) The intermediate component according to claim 23, further comprising a tube retaining portion configured and arranged to engage a retainer part provided to the air delivery tube to releasably lock the intermediate component to the air delivery tube in the operational configuration, and a side wall extending around at least a portion of an outlet end with the outlet opening, the side wall including a hole and configured to receive a retaining protrusion of the air delivery tube. ### Claim 28 (depends on 27) The intermediate component according to claim 27, wherein the side wall is a part-annular side wall and cooperates with the main body to form a channel adapted to receive the air delivery tube, and each of two opposing sides of the part-annular side wall includes one said hole that is configured to engage a respective said retaining protrusion provided to the air delivery tube. ### Claim 29 (depends on 28) The intermediate component according to claim 28, wherein the part-annular side wall forms a gap to accommodate an electrical connection of the air delivery tube with the water reservoir dock in the operational configuration. ### Claim 30 (depends on 28) The intermediate component according to claim 28, further comprising a finger tab that projects outwardly from the part-annular side wall, the finger tab configured and arranged to facilitate insertion or retraction of the intermediate component into or from the water reservoir dock. ### Claim 31 (depends on 28) The intermediate component according to claim 28, wherein the part-annular side wall of the intermediate component includes a non-circular profile to facilitate correct orientation of the intermediate component into the operational configuration. ### Claim 32 (depends on 21) The intermediate component according to claim 21, further comprising a tube retaining portion configured and arranged to engage a retainer part provided to the air delivery tube to releasably lock the intermediate component to the air delivery tube in the operational configuration. ### Claim 33 (depends on 21) The intermediate component according to claim 21, wherein the intermediate component comprises a guide rail configured and arranged to engage with a guide slot provided to the water reservoir dock to align and guide the intermediate component into the operational configuration, and wherein the intermediate component includes a resilient clip to secure the intermediate component to the water reservoir dock, the clip being aligned with the guide rail. ### Claim 34 (depends on 21) The intermediate component according to claim 21, wherein the intermediate component comprises a tube retaining portion configured and arranged to engage behind a retainer part provided to the air delivery tube to releasably lock the intermediate component to the air delivery tube in the operational configuration, wherein the intermediate component comprises an inlet seal adapted to from a seal with an outlet tube of the water reservoir in the operational configuration, wherein the intermediate component comprises a tubular portion including the outlet opening, wherein the tube retaining portion comprises a hole configured to receive the retainer part to releasably lock the air delivery tube to the intermediate component in the operational configuration, wherein the retainer part is configured and arranged to axially lock the air delivery tube in the operational configuration, wherein the intermediate component comprises a guide rail configured and arranged to engage with a guide slot provided to the water reservoir dock to align and guide the intermediate component into the operational configuration, and wherein the intermediate component includes a resilient clip to secure the intermediate component to the water reservoir dock, the clip being aligned with the guide rail. ### Claim 35 (depends on 34) The intermediate component according to claim 34, wherein the intermediate component comprises a side wall extending around at least a portion of an outlet end with the outlet opening, the side wall including the hole and configured to form the tube retaining portion, wherein the side wall is part-annular and cooperates with the outlet end to form a channel adapted to receive the air delivery tube, and each of two opposing sides of the part-annular side wall includes the hole adapted to engage a respective said retaining part provided to the air delivery tube, wherein the part-annular side wall forms a gap to accommodate an electrical connection of the air delivery tube with the water reservoir dock in the operational configuration, wherein the tubular portion comprises a port adapted to communicate with a pressure sensor and/or a microphone, the port comprising a port seal and/or membrane, and wherein the intermediate component comprises a flange between the inlet seal and the outlet end configured and arranged to abut a wall of the water reservoir dock to limit insertion depth of the intermediate component in the water reservoir dock in the operational configuration. ### Claim 36 (depends on 21) A medical treatment apparatus for supplying a supply of pressurized breathable air to a patient in a positive pressure range suitable for treatment of a respiratory disorder, comprising: a flow generator to generate the supply of pressurized breathable air; the water reservoir, the water reservoir dock formed as an extension of the flow generator, the air delivery tube; and the intermediate component of claim 21.