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NZ795792B2 - Vent adaptor for a respiratory therapy system - Google Patents
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NZ795792B2 - Vent adaptor for a respiratory therapy system - Google Patents

Vent adaptor for a respiratory therapy system

Info

Publication number
NZ795792B2
NZ795792B2 NZ795792A NZ79579217A NZ795792B2 NZ 795792 B2 NZ795792 B2 NZ 795792B2 NZ 795792 A NZ795792 A NZ 795792A NZ 79579217 A NZ79579217 A NZ 79579217A NZ 795792 B2 NZ795792 B2 NZ 795792B2
Authority
NZ
New Zealand
Prior art keywords
vent
housing
hme
base
gas
Prior art date
Application number
NZ795792A
Other versions
NZ795792A (en
Inventor
Muditha Pradeep Dantanarayana
Justin John Formica
Graeme Wehbeh Jamie
Joseph Samuel Ormrod
Llewelyn Jones Richard
Chia Ik Tan
Original Assignee
ResMed Pty Ltd
Filing date
Publication date
Application filed by ResMed Pty Ltd filed Critical ResMed Pty Ltd
Publication of NZ795792A publication Critical patent/NZ795792A/en
Publication of NZ795792B2 publication Critical patent/NZ795792B2/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0605—Means for improving the adaptation of the mask to the patient
    • A61M16/0616—Means for improving the adaptation of the mask to the patient with face sealing means comprising a flap or membrane projecting inwards, such that sealing increases with increasing inhalation gas pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0683—Holding devices therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0816—Joints or connectors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0875—Connecting tubes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/1045—Devices for humidifying or heating the inspired gas by using recovered moisture or heat from the expired gas
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
    • A61M16/16—Devices to humidify the respiration air
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
    • A61M16/16—Devices to humidify the respiration air
    • A61M16/161—Devices to humidify the respiration air with means for measuring the humidity
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/208—Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/0015—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors
    • A61M2016/0018—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors electrical
    • A61M2016/0021—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors electrical with a proportional output signal, e.g. from a thermistor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
    • A61M2016/0033—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2202/00—Special media to be introduced, removed or treated
    • A61M2202/02—Gases
    • A61M2202/0225—Carbon oxides, e.g. Carbon dioxide
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/35—Communication
    • A61M2205/3576—Communication with non implanted data transmission devices, e.g. using external transmitter or receiver
    • A61M2205/3584—Communication with non implanted data transmission devices, e.g. using external transmitter or receiver using modem, internet or Bluetooth®
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/35—Communication
    • A61M2205/3576—Communication with non implanted data transmission devices, e.g. using external transmitter or receiver
    • A61M2205/3592—Communication with non implanted data transmission devices, e.g. using external transmitter or receiver using telemetric means, e.g. radio or optical transmission
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/42—Reducing noise
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/50—General characteristics of the apparatus with microprocessors or computers

Abstract

vent system (9100) for use with a patient interface during respiratory therapy of a patient with a therapy flow of gas pressurized above ambient pressure, the vent system providing a vent flow of gas to discharge gas exhaled by the patient from a pressurized volume, the vent flow of gas being continuous during the respiratory therapy. The vent system includes: a vent housing (9320) having at least one first orifice extending through the base and at least one second orifice to discharge pressurized gas to atmosphere from the pressurized volume; a vent housing connector (9160) having an outlet opening configured to direct the flow of pressurized gas to the patient interface (not shown); a heat and moisture exchanger (HME) comprising an HME housing (9400) and an HME material within the HME housing; and a membrane (9140) positioned adjacent to the base. The vent housing (9320) and the vent housing connector (9160) are configured to be connected to, at least in part, form a cavity, and wherein the HME is positioned in the cavity when the vent assembly is assembled. The HME housing (9400) is removably connected to the vent housing (9320) with a snap-fit. The membrane (9140) is elastically deformable due to pressure within the pressurized volume to apportion the vent flow of gas between the at least one first orifice and the at least one second orifice throughout the therapeutic pressure range.

Claims (21)

1. A vent system for use with a patient interface during respiratory therapy of a patient with a therapy flow of gas pressurized above ambient pressure, the vent system providing a vent flow of gas to discharge gas exhaled by the patient from a pressurized volume, the vent flow of gas being continuous during the respiratory therapy, the vent system comprising: a vent housing comprising a base having at least one first orifice extending through the base to allow the vent flow of gas to be discharged to atmosphere from the pressurized volume; at least one second orifice to allow gas to be discharged to atmosphere from the pressurized volume; a vent housing connector having an outlet opening configured to direct the therapy flow of gas to the patient interface; a heat and moisture exchanger (HME) comprising an HME housing and an HME material within the HME housing; and a membrane positioned adjacent to the base, wherein the vent housing and the vent housing connector are configured to be connected to, at least in part, form a cavity, and wherein the HME is positioned in the cavity when the vent system is assembled, wherein the HME housing is removably connected to the vent housing with a snap-fit, wherein the pressurized volume is in fluid communication with atmosphere through the at least one first orifice and the at least one second orifice throughout a therapeutic pressure range, wherein the vent housing comprises an outer wall and an inner wall, the inner wall defining an inlet for the therapy flow of gas, wherein the base is positioned between the outer wall and the inner wall, and wherein the membrane is elastically deformable due to pressure within the pressurized volume to apportion the vent flow of gas between the at least one first orifice and the at least one second orifice throughout the therapeutic pressure range.
2. The vent system of claim 1, further comprising an annular lip extending from around an inner periphery of the vent housing and at least one retaining protrusion extending from the annular lip.
3. The vent system of claim 2, further comprising an annular recess extending around an outer periphery of the HME housing, wherein the at least one retaining protrusion and the annular recess are configured to removably connect the HME housing to the vent housing.
4. The vent system of claim 3, wherein the HME housing comprises a patient- side HME housing portion and an atmosphere-side HME housing portion, and wherein vent housing is configured such that the patient-side HME housing portion is positioned closer to the patient than the atmosphere-side HME housing portion in use.
5. The vent system of claim 4, wherein the annular recess is provided to the atmosphere-side HME housing portion.
6. The vent system of claim 5, wherein the base further comprises an inner base and an outer base.
7. The vent system of claim 6, wherein the outer base is adjacent to the outer wall, the inner base is adjacent to the outer base, and the inner base is adjacent to the inner wall.
8. The vent system of claim 6 or 7, wherein the at least one first orifice further comprises a plurality of inner orifices and the at least one second orifice further comprises a plurality of outer orifices.
9. The vent system of claim 8, wherein the plurality of outer orifices pass through the outer base and the plurality of inner orifices pass between the outer base and the inner base.
10. The vent system of any one of claims 6 to 8, wherein the membrane comprises an elastically deformable material.
11. The vent system of claim 10, wherein the elastically deformable material comprises silicone.
12. The vent system of any one of claims 6 to 11, wherein the vent housing is formed from a single, homogeneous piece of a relatively rigid material.
13. The vent system of claim 12, wherein the relatively rigid material is polycarbonate.
14. The vent system of any one of claims 6 to 12, wherein the outer wall, the inner wall, the inner base, the outer base, and the membrane are circular.
15. The vent system of claim 14, wherein the outer wall, the inner wall, the inner base, the outer base, and the membrane are concentric.
16. The vent system of any one of claims 1 to 14, wherein the membrane is not attached to the vent housing such that the membrane is freely movable towards and away from the base.
17. The vent system of any of claims 1 to 16, wherein, the HME, including the HME housing and the HME material, are removable from the cavity.
18. A patient interface comprising: a seal-forming structure; a plenum chamber joined to the seal-forming structure; a positioning and stabilising structure to secure the patient interface on the patient in use; and the vent system of any one of claims 1 to 17.
19. The patient interface of claim 18, further comprising a vent connector tube or a decoupling structure to fluidly connect the vent system to the plenum chamber.
20. An RPT system, comprising: the vent system of any of claims 1 to 17; an RPT device configured to generate the therapy flow of gas pressurized above ambient pressure; a patient interface configured to deliver the therapy flow of gas pressurized above ambient pressure to the patient’s airways, the patient interface being non-vented; a delivery conduit configured to deliver the therapy flow of gas pressurized above ambient pressure from the RPT device to the vent system.
21. The RPT system of claim 20, wherein the RPT system does not include a humidifier.
NZ795792A 2017-12-22 Vent adaptor for a respiratory therapy system NZ795792B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201762443305P 2017-01-06 2017-01-06
NZ754925A NZ754925B2 (en) 2017-12-22 Vent adaptor for a respiratory therapy system

Publications (2)

Publication Number Publication Date
NZ795792A NZ795792A (en) 2025-07-25
NZ795792B2 true NZ795792B2 (en) 2025-10-29

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