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NZ766981B2 - Patient interface - Google Patents
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NZ766981B2 - Patient interface - Google Patents

Patient interface

Info

Publication number
NZ766981B2
NZ766981B2 NZ766981A NZ76698119A NZ766981B2 NZ 766981 B2 NZ766981 B2 NZ 766981B2 NZ 766981 A NZ766981 A NZ 766981A NZ 76698119 A NZ76698119 A NZ 76698119A NZ 766981 B2 NZ766981 B2 NZ 766981B2
Authority
NZ
New Zealand
Prior art keywords
plenum chamber
seal
forming structure
patient
superior
Prior art date
Application number
NZ766981A
Other versions
NZ766981A (en
Inventor
Matthew Eves
Lachlan Richard Goldspink
Original Assignee
ResMed Pty Ltd
Filing date
Publication date
Application filed by ResMed Pty Ltd filed Critical ResMed Pty Ltd
Priority to NZ796358A priority Critical patent/NZ796358B2/en
Priority to NZ796359A priority patent/NZ796359A/en
Priority to NZ796362A priority patent/NZ796362A/en
Priority to NZ796360A priority patent/NZ796360A/en
Priority to NZ796361A priority patent/NZ796361A/en
Priority claimed from PCT/AU2019/050279 external-priority patent/WO2019183681A1/en
Publication of NZ766981A publication Critical patent/NZ766981A/en
Publication of NZ766981B2 publication Critical patent/NZ766981B2/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
    • A61M16/0057—Pumps therefor
    • A61M16/0066—Blowers or centrifugal pumps
    • 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
    • A61M16/0605—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
    • A61M16/0605—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
    • A61M16/0622—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 having an underlying cushion
    • 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
    • A61M16/0825—Joints or connectors with ball-sockets
    • 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
    • A61M16/0883—Circuit type
    • 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
    • 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
    • A61M16/1005—Preparation of respiratory gases or vapours with O2 features or with parameter measurement
    • 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
    • A61M16/20—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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/02—General characteristics of the apparatus characterised by a particular materials
    • A61M2205/0216—Materials providing elastic properties, e.g. for facilitating deformation and avoid breaking
    • 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
    • A61M2205/02—General characteristics of the apparatus characterised by a particular materials
    • A61M2205/0222—Materials for reducing friction
    • 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
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3368—Temperature
    • 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
    • A61M2210/00—Anatomical parts of the body
    • A61M2210/06—Head
    • A61M2210/0618—Nose
    • 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
    • A61M2210/00—Anatomical parts of the body
    • A61M2210/06—Head
    • A61M2210/0625—Mouth

Abstract

Plenum chambers for a patient interface having an oral portion and a nasal portion and additional features of a seal-forming structure and a shell are described. Various embodiments of a seal-forming structure are contemplated that comprise arrangements having areas with a higher resistance to deformation at laterally spaced portions of either the nasal portion or of the oral portion. Another seal forming structure comprises a bridge portion that can be deformed to accommodate different patient nose lengths. Yet another seal-forming structure comprises different surface finishes on the nasal portion and the oral portion.

Claims (25)

1. A plenum chamber for a patient interface, the plenum chamber pressurisable to a therapeutic pressure of at least 6 cmH2O above ambient air pressure, the plenum chamber having an oral portion and a nasal portion, the plenum chamber comprising: 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, said seal-forming structure having one or more holes therein such that the flow of air at said therapeutic pressure is delivered to an entrance to the patient’s nares and to the patient’s mouth via the one or more holes, 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 shell having one or more plenum chamber inlet ports sized and structured to receive a flow of air at the therapeutic pressure for breathing by a patient, the shell supporting the seal-forming structure, wherein the shell is provided to the oral portion of the plenum chamber, and substantially the entire nasal portion is formed by the sealforming structure; and wherein the seal-forming structure comprises lateral support portions laterally-spaced and each located in a non-patient facing wall of the nasal portion, each lateral support portion provided at an inferior region of a respective lateral side of the nasal portion, the lateral support portions each having a higher resistance to deformation in use in comparison to an anteriorfacing central portion of the seal-forming structure between the lateral support portions.
2. The plenum chamber of claim 1, wherein the lateral support portions comprise portions of the seal-forming structure having a greater thickness in comparison to the anterior-facing central portion of the seal-forming structure.
3. The plenum chamber of claim 1 or claim 2, wherein the lateral support portions each have a curved superior boundary.
4. The plenum chamber of claim 3, wherein each curved superior boundary follows curvature of a superior periphery of the seal-forming structure.
5. The plenum chamber of any one of claims 1 – 4, wherein the lateral support portions are substantially fin-shaped.
6. The plenum chamber of any one of claims 1 – 5, wherein the seal-forming structure comprises a superior-facing central portion configured to form a seal to an inferior periphery of the patent’s nose surrounding the patient’s nares and to the patient’s lip superior in use, the superior-facing central portion having a lesser thickness than the lateral support portions.
7. The plenum chamber of claim 6, wherein the seal-forming structure comprises a wall thickness within the range of 0.15mm-0.4mm in the superior-facing central portion.
8. The plenum chamber of claim 6 or claim 7, wherein the seal-forming structure comprises intermediate portions provided between the superior-facing central portion and the lateral support portions, the seal-forming structure having a greater thickness in the intermediate portions than in the superior-facing central portion.
9. The plenum chamber of claim 8, wherein the seal-forming structure comprises a wall thickness within the range of 0.5mm-1mm in the intermediate portions.
10. The plenum chamber of claim 8 or claim 9, wherein the seal-forming structure comprises a lesser thickness in the intermediate portions than in the lateral support portions.
11. The plenum chamber of any one of claims 6-10, wherein the seal-forming structure comprises lateral-facing posterior portions provided between respective intermediate portions and lateral support portions on each side of the nasal portion, the seal-forming structure having a greater thickness in the lateral-facing posterior portions than in the intermediate portions.
12. The plenum chamber of claim 11, wherein at least part of each intermediate portion is provided superior and anterior to a respective lateral support portion.
13. The plenum chamber of claim 11 or claim 12, wherein at least part of each lateral-facing posterior portion is provided superior and posterior to a respective lateral support portion.
14. The plenum chamber of any one of claims 11-13, wherein the seal-forming structure comprises, on each lateral side of the nasal portion, a junction between a respective lateral support portion, intermediate portion and lateralfacing posterior portion, the junction being located proximate a superior-most point of the lateral support portion.
15. The plenum chamber of claim 14, wherein the junction is located anterior to the superior-most point of the lateral support portion.
16. The plenum chamber of any one of claims 1 to 15, wherein the nasal portion of the plenum chamber comprises posterior corners configured to lie on the patients face proximate nasolabial creases on the patient’s face.
17. The plenum chamber of any one of claims 1 to 16, wherein the shell comprises posteriorly protruding portions reinforcing the seal-forming structure at a base of the nasal portion.
18. The plenum chamber of any one of claims 1-17, wherein the lateral support portions are provided substantially directly superior to portions of the shell.
19. The plenum chamber of any one of claims 1-18, wherein the lateral support portions each have a substantially flat inferior boundary.
20. The plenum chamber of claim 19, wherein the flat inferior boundary is provided adjacent a superior edge of the shell.
21. The plenum chamber of any one of claims 1-20, wherein the plenum chamber comprises a single plenum chamber inlet port.
22. The plenum chamber of claim 21, wherein the plenum chamber inlet port is configured to connect to a frame.
23. The plenum chamber of any one of claims 1-20, wherein the plenum chamber comprises two plenum chamber inlet ports, the plenum chamber inlet ports each configured to connect to a respective conduit forming part of a positioning and stabilising structure.
24. A patient interface comprising: a plenum chamber according to any one of claims 1-23; 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, 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 vent structure to allow a continuous flow of gases exhaled by the patient from an interior of the plenum chamber to ambient, said vent structure being sized and shaped to maintain the therapeutic pressure in the plenum chamber in use; wherein the patient interface is configured to allow the patient to breathe from ambient through their mouth in the absence of a flow of pressurised air through the plenum chamber inlet port.
25. The patient interface of claim 24, wherein the patient interface comprises a frame to which the plenum chamber connects in use, the frame comprising portions that reinforce the seal-forming structure at the lateral support portions.
NZ766981A 2018-03-28 2019-03-28 Patient interface NZ766981B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NZ796358A NZ796358B2 (en) 2019-03-28 Patient interface
NZ796359A NZ796359A (en) 2018-03-28 2019-03-28 Patient interface
NZ796362A NZ796362A (en) 2018-03-28 2019-03-28 Patient interface
NZ796360A NZ796360A (en) 2018-03-28 2019-03-28 Patient interface
NZ796361A NZ796361A (en) 2018-03-28 2019-03-28 Patient interface

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201862649376P 2018-03-28 2018-03-28
PCT/AU2019/050279 WO2019183681A1 (en) 2018-03-28 2019-03-28 Patient interface

Publications (2)

Publication Number Publication Date
NZ766981A NZ766981A (en) 2024-04-26
NZ766981B2 true NZ766981B2 (en) 2024-07-30

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