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NZ792424B2 - Vent and vent adaptor for patient interface - Google Patents
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NZ792424B2 - Vent and vent adaptor for patient interface - Google Patents

Vent and vent adaptor for patient interface

Info

Publication number
NZ792424B2
NZ792424B2 NZ792424A NZ79242417A NZ792424B2 NZ 792424 B2 NZ792424 B2 NZ 792424B2 NZ 792424 A NZ792424 A NZ 792424A NZ 79242417 A NZ79242417 A NZ 79242417A NZ 792424 B2 NZ792424 B2 NZ 792424B2
Authority
NZ
New Zealand
Prior art keywords
p1203nz3
orifices
membrane
vent
patient
Prior art date
Application number
NZ792424A
Other versions
NZ792424A (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 NZ792424A publication Critical patent/NZ792424A/en
Publication of NZ792424B2 publication Critical patent/NZ792424B2/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

patient interface comprising a vent system for use during respiratory therapy with a flow of pressurized gas to provide a continuous vent flow of gas to discharge gas exhaled by the patient from a pressurized volume. The vent system includes a vent housing comprising a base (3403) having a plurality of first orifices (3407) and a plurality of second orifices (3404) extending through the base (3403) to allow gas to be discharged to atmosphere from the pressurized volume, and the plurality of second orifices (3404) being positioned radially outward of the plurality of first orifices (3407) with respect to a central axis through the base. The vent system includes an elastically deformable membrane (3430) positioned adjacent to the base (3403) and over the plurality of first orifices (3407). The membrane (3430) has an outer surface, the outer surface having an outer radius selected such that the membrane (3430) can be located over the plurality of first orifices (3407) in use without covering the plurality of second orifices (3404) such that an increase in pressure within the pressurized volume causes the membrane (3430) to restrict a first vent flow through the plurality of first orifices (3407) throughout the therapeutic pressure range and increase a second vent flow through the plurality of second orifices (3404) such that the vent flow through the plurality of first orifices (3407)and the plurality of second orifices (3404) is approximately constant throughout the therapeutic pressure range.

Claims (16)

1. A patient interface comprising: a plenum chamber pressurisable to a therapeutic pressure of at least 6 cmH O above ambient air pressure, said plenum chamber including a plenum chamber inlet port sized and structured to receive a flow of air at the therapeutic pressure for breathing by a patient; a seal-forming structure constructed and arranged to form a seal with a region of the patient’s face surrounding an entrance to the patient’s airways such that the flow of air at said therapeutic pressure is delivered to at least an entrance to the patient’s nares, the seal-forming structure constructed and arranged to maintain said therapeutic pressure in the plenum chamber throughout the patient’s respiratory cycle in use; a positioning and stabilising structure to provide an elastic force to hold the seal- forming structure in a therapeutically effective position on the patient’s head, the positioning and stabilising structure comprising a tie, the tie being constructed and arranged so that at least a portion overlies a region of the patient’s head superior to an otobasion superior of the patient’s head in use, and a portion of the tie being dimensioned and structured to engage in use a portion of the patient’s head in a region of a parietal bone, wherein the positioning and stabilising structure has a non-rigid decoupling portion; and 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 a plurality of first orifices and a plurality of second orifices extending through the base to allow gas to be discharged to atmosphere from the pressurized volume, and the plurality of second orifices being positioned radially outward of the plurality of first orifices with respect to a central axis through the base; and a membrane positioned adjacent to the base and over the plurality of first orifices within the pressurized volume, wherein the membrane has an outer surface, the outer surface having an outer radius selected such that the membrane can be located over the plurality of first orifices in use without covering the plurality of second orifices[see support at 0335] such that the pressurized volume is in fluid communication with atmosphere through the plurality of second orifices throughout a therapeutic pressure range, wherein the membrane is elastically deformable in response to an increase in pressure within the pressurized volume to restrict a first vent flow through the plurality of first orifices throughout the therapeutic pressure range and increase a second vent flow through the plurality of second orifices such that the vent flow through the plurality of first orifices and the plurality of second orifices is approximately constant throughout the therapeutic pressure range, and wherein the patient interface is configured to allow the patient to breath from ambient through their mouth in the absence of a flow of pressurised air through the plenum chamber inlet port, or the patient interface is configured to leave the patient’s mouth uncovered.
2. The patient interface 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 patient interface 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 patient interface of claim 3, wherein the membrane is configured to deflect closer to the base as the therapeutic pressure increases above a threshold therapeutic pressure value.
5. The patient interface 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 therapeutic pressure above the threshold therapeutic pressure value.
6. The patient interface of any one of claims 1 to 5, wherein the base further comprises an inner base and an outer base.
7. The patient interface of claim 6, further comprising a plurality of membrane spacers extending from the inner base.
8. The patient interface of claim 7, wherein the membrane is supported over the plurality of first orifices on the membrane spacers.
9. The patient interface of claim 8, wherein the vent housing comprises a base divider between the inner base and the outer base, and wherein the membrane is supported over the plurality of first orifices on the base divider and the membrane spacers.
10. The patient interface of any one of claims 6 to 9, wherein the outer base comprises a plurality of lateral membrane supports that are configured to prevent the membrane from covering the plurality of second orifices.
11. The patient interface of any one of claims 1 to 10, wherein the membrane comprises an elastically deformable material.
12. The patient interface of claim 11, wherein the elastically deformable material is silicone.
13. The patient interface of any one of claims 1 to 12, wherein the vent housing is formed from a single, homogeneous piece of a relatively rigid material.
14. The patient interface of claim 13, wherein the relatively rigid material is polycarbonate.
15. The patient interface 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.
16. The patient interface of claim 15, further comprising a vent connector tube or a decoupling structure to fluidly connect the vent system to the plenum chamber. P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2 P1203NZ3 / 506240NZDIV2
NZ792424A 2017-09-21 Vent and vent adaptor for patient interface NZ792424B2 (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
NZ792424A NZ792424A (en) 2025-05-02
NZ792424B2 true NZ792424B2 (en) 2025-08-05

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