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NZ792427B2 - Vent and vent adaptor for patient interface - Google Patents
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NZ792427B2 - Vent and vent adaptor for patient interface - Google Patents

Vent and vent adaptor for patient interface

Info

Publication number
NZ792427B2
NZ792427B2 NZ792427A NZ79242717A NZ792427B2 NZ 792427 B2 NZ792427 B2 NZ 792427B2 NZ 792427 A NZ792427 A NZ 792427A NZ 79242717 A NZ79242717 A NZ 79242717A NZ 792427 B2 NZ792427 B2 NZ 792427B2
Authority
NZ
New Zealand
Prior art keywords
p1203nz5
vent
membrane
base
orifice
Prior art date
Application number
NZ792427A
Other versions
NZ792427A (en
Inventor
Muditha Pradeep Dantanarayana
Charles Harry Finch
Justin John Formica
Richard Llewelyn Jones
Joseph Samuel Ormrod
Chia Ik Tan
Jamie Graeme Wehbeh
Original Assignee
ResMed Pty Ltd
Filing date
Publication date
Priority claimed from PCT/AU2016/050893 external-priority patent/WO2017049358A1/en
Application filed by ResMed Pty Ltd filed Critical ResMed Pty Ltd
Publication of NZ792427A publication Critical patent/NZ792427A/en
Publication of NZ792427B2 publication Critical patent/NZ792427B2/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
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative 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
    • 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
    • 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
    • A61M16/0666—Nasal cannulas or tubing
    • 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
    • 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
    • A61M16/20—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
    • A61M2202/00—Special media to be introduced, removed or treated
    • A61M2202/0085—Special media to be introduced, removed or treated product washed out
    • 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
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/24—Check- or non-return valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/144—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery
    • F16K15/145—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery the closure elements being shaped as a solids of revolution, e.g. cylindrical or conical

Abstract

vent system (3400) for use during respiratory therapy with a flow of pressurized gas may provide a continuous vent flow of gas. The vent system includes a vent housing (3401) having an outer wall (3402); an inner wall (3410), the inner wall defining an inlet for the flow of gas; and a base positioned between the outer wall (3402) and the inner wall (3410), the base having at least one first orifice (3407) passing through it. The vent system includes a membrane (3430) adjacent to the base, the membrane being configured to restrict vent flow through the at least one first orifice. The vent housing (3401) comprises a shaft (3419) extending from the base to receive the therapy flow of gas and at least one second orifice (3404) passing through the shaft (3419) wherein the vent housing is formed from a single, homogeneous piece of a relatively rigid material.

Claims (17)

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 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 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; and a membrane positioned adjacent to the base, 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 membrane is configured such that an increase in pressure within the pressurized volume causes the membrane to restrict a first vent flow through the at least one first orifice throughout the therapeutic pressure range, and wherein restriction of the first vent flow through the at least one first orifice causes an increase in a second vent flow through the at least one second orifice such that the vent flow through the at least one first orifice and the at least one second orifice is approximately constant throughout the 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 P1203NZ5 / 506240NZDIV4 wherein the vent housing comprises a shaft extending from the base to receive the therapy flow of gas, the at least one first orifice passing through the base, and the at least one second orifice passing through the shaft; and wherein the vent housing is formed from a single, homogeneous piece of a relatively rigid material.
2. The vent system of claim 1, wherein the vent flow is greater than or equal to the sum of the first vent flow and the second vent flow.
3. The vent system of claim 1 or 2, wherein the membrane is elastically deformable toward the base in use such that the first vent flow is restricted as the membrane is deflected towards the base.
4. The vent system of claim 3, wherein the membrane is configured to deflect closer to the base as the therapy pressure increases above a threshold therapy pressure value.
5. The vent system of claim 4, wherein the membrane is configured to decrease the first vent flow such that the second vent flow increases as the membrane is deflected closer to the base due to increasing the therapy pressure above the threshold therapy pressure value.
6. The vent system of any one of claims 1 to 5, wherein the at least one first orifice further comprises a plurality of first orifices and the at least one second orifice further comprises a plurality of second orifices.
7. The vent system of claim 6, wherein the base further comprises an inner base and an outer base.
8. The vent system of claim 7, further comprising a plurality of membrane spacers extending from the inner base.
9. The vent system of claim 8, wherein the membrane is supported over the plurality of first orifices on the outer base and the membrane spacers such that increasing the therapy pressure above a threshold therapy pressure value causes the membrane to deflect towards the inner base. P1203NZ5 / 506240NZDIV4
10. The vent system of claim 9, wherein the membrane is configured such that a membrane-inner base gap defined between the membrane and the inner base decreases as the therapy pressure is increased above the threshold therapy pressure value.
11. The vent system of claim 10, wherein the membrane is configured such that as the membrane-inner base gap decreases the first vent flow decreases and the second vent flow increases.
12. The vent system of any one of claims 1 to 11, wherein the outer wall, the inner wall, the inner base, the outer base, and the membrane are circular.
13. The vent system of claim 12, wherein the outer wall, the inner wall, the inner base, the outer base, and the membrane are concentric.
14. The vent system of any one of claims 1 to 13, wherein the membrane comprises an elastically deformable material.
15. The vent system of claim 14, wherein the elastically deformable material is silicone.
16. The vent system of claim 15, wherein the relatively rigid material is polycarbonate.
17. The vent system of any one of claims 1 to 16, wherein the membrane is not attached to the vent housing such that the membrane is freely movable towards and away from the base. P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4 P1203NZ5 / 506240NZDIV4
NZ792427A 2017-09-21 Vent and vent adaptor for patient interface NZ792427B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201662397544P 2016-09-21 2016-09-21
PCT/AU2016/050893 WO2017049358A1 (en) 2015-09-23 2016-09-23 Vent adaptor for a respiratory therapy system
US201762443305P 2017-01-06 2017-01-06
NZ751732A NZ751732B2 (en) 2017-09-21 Vent and vent adaptor for patient interface

Publications (2)

Publication Number Publication Date
NZ792427A NZ792427A (en) 2025-05-02
NZ792427B2 true NZ792427B2 (en) 2025-08-05

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