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NZ778168B2 - Patient Interface with Volume Reducing Member - Google Patents
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NZ778168B2 - Patient Interface with Volume Reducing Member - Google Patents

Patient Interface with Volume Reducing Member

Info

Publication number
NZ778168B2
NZ778168B2 NZ778168A NZ77816816A NZ778168B2 NZ 778168 B2 NZ778168 B2 NZ 778168B2 NZ 778168 A NZ778168 A NZ 778168A NZ 77816816 A NZ77816816 A NZ 77816816A NZ 778168 B2 NZ778168 B2 NZ 778168B2
Authority
NZ
New Zealand
Prior art keywords
chamber
patient
patient interface
peripheral
main
Prior art date
Application number
NZ778168A
Other versions
NZ778168A (en
Inventor
Charles Harry Finch
Original Assignee
ResMed Pty Ltd
Filing date
Publication date
Application filed by ResMed Pty Ltd filed Critical ResMed Pty Ltd
Publication of NZ778168A publication Critical patent/NZ778168A/en
Publication of NZ778168B2 publication Critical patent/NZ778168B2/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
    • 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
    • A61M16/0611—Means for improving the adaptation of the mask to the patient with a gusset portion
    • 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
    • A61M16/10—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
    • A61M16/22—Carbon dioxide-absorbing devices ; Other means for removing 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
    • 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
    • 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
    • A61M2205/42—Reducing noise
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

Abstract

patient interface for sealed delivery of a flow of air at a continuously positive pressure with respect to ambient air pressure to an entrance to the patient’s airways including at least entrance of a patient’s nares, wherein the patient interface is configured to maintain a therapy pressure in a range of about 4 cmH2O to about 30 cmH2O above ambient air pressure in use, throughout the patient’s respiratory cycle, while the patient is sleeping, to ameliorate sleep disordered breathing; said patient interface comprising: a cushion assembly adapted to form a seal around the patient’s nose and/or mouth, the cushion assembly defining a plenum chamber pressurised at a pressure above ambient pressure in use; a gas washout vent configured to allow a flow of patient exhaled CO2 to an exterior of the patient interface to minimise rebreathing of exhaled CO2 by the patient; and at least one volume reducing member provided within the plenum chamber to reduce an internal volume of the plenum chamber, wherein the at least one volume reducing member is arranged to separate the plenum chamber into a main chamber and at least one peripheral chamber, the main chamber comprising a main volume of the plenum chamber for delivery of the therapy pressure, and the at least one peripheral chamber comprising a deadspace volume of the plenum chamber, wherein the main chamber is adapted to be in direct fluid communication with at least the entrance to the patient’s nares and the gas washout vent, and wherein the least one peripheral chamber includes an upper or superior peripheral chamber adapted to be positioned superior the entrance to the patient’s nares.

Claims (11)

1. A patient interface for sealed delivery of a flow of air at a continuously positive pressure with respect to t air re to an ce to the patient’s airways including at least ce of a t’s nares, wherein the patient interface is configured to maintain a therapy pressure in a range of about 4 cmH2O to about 30 cmH2O above ambient air pressure in use, throughout the patient’s respiratory cycle, while the patient is sleeping, to ameliorate sleep disordered breathing; said patient interface comprising: a cushion assembly adapted to form a seal around the patient’s nose and/or mouth, the cushion ly defining a plenum chamber pressurised at a pressure above ambient pressure in use; a gas washout vent configured to allow a flow of patient exhaled CO2 to an exterior of the patient interface to minimise rebreathing of exhaled CO2 by the patient; and at least one volume reducing member ed within the plenum chamber to reduce an internal volume of the plenum chamber, wherein the at least one volume reducing member is arranged to separate the plenum chamber into a main r and at least one peripheral chamber, the main chamber comprising a main volume of the plenum r for delivery of the therapy pressure, and the at least one peripheral chamber comprising a deadspace volume of the plenum chamber, n the main chamber is adapted to be in direct fluid communication with at least the entrance to the patient’s nares and the gas washout vent, and n the least one peripheral chamber includes an upper or superior peripheral chamber adapted to be positioned superior the entrance to the patient’s nares.
2. The patient interface according to claim 1, wherein the least one peripheral chamber further includes a lower or inferior peripheral chamber adapted to be positioned inferior the entrance to the patient’s mouth.
3. The patient interface according to claim 2, wherein the upper or superior peripheral chamber and the lower or inferior peripheral chamber are ted from the main chamber and from one another. ResMed Ref: P1206NZ5 / Our ref: 506155NZDIV4
4. The patient interface according to claim 3, wherein the at least one volume reducing member includes an upper or superior movable flap to establish the upper peripheral chamber separated from the main chamber and a lower or inferior movable flap to establish the lower eral chamber separated from the main r.
5. The patient interface according to claim 2, wherein the upper or superior peripheral chamber and the lower or inferior eral chamber are communicated with one another via side portions.
6. The patient ace ing to claim 5, wherein the at least one volume reducing member includes a single movable flap to establish the main chamber and the upper and lower eral chambers separated from the main chamber.
7. The patient interface according to claim 2, wherein the least one peripheral chamber further includes side peripheral chambers adapted to be positioned along sides of the patient’s mouth.
8. The patient interface according to claim 7, wherein the at least one volume reducing member includes an upper or superior e flap to establish the upper peripheral chamber separated from the main chamber, a lower or inferior movable flap to establish the lower peripheral chamber separated from the main chamber, and side e flaps to establish the side peripheral chambers separated from the main chamber.
9. The patient interface according to claim 1, wherein the at least one volume reducing member includes a single e flap to establish the main chamber and the upper peripheral chamber separated from the main chamber.
10. The patient interface according to any one of claims 1 to 9, wherein the at least one volume reducing member ses an end portion adapted to form a seal with patient’s face. ResMed Ref: P1206NZ5 / Our ref: 506155NZDIV4
11. The patient interface according to any one of claims 1 to 10, wherein the at least one volume reducing member is arranged to reduce the effective al volume of the plenum chamber without altering the seal. Nasai cavity Crai cavity Vocal folds Aiveoiar sacs Oesophagus Trachea \1i “Wiimlillli Bronchusummm_m“mm“mmmmmmmmm?mmmmmmmmm_m¥m/2 / M
NZ778168A 2016-07-18 Patient Interface with Volume Reducing Member NZ778168B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201562194451P 2015-07-20 2015-07-20
NZ739176A NZ739176B2 (en) 2016-07-18 Patient interface with volume reducing member

Publications (2)

Publication Number Publication Date
NZ778168A NZ778168A (en) 2024-04-26
NZ778168B2 true NZ778168B2 (en) 2024-07-30

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