Patient interface system

Patent metadata

Field	Value
Publication number	US-2025050046-A1
Application number	US-202418797344-A
Country	US
Kind code	A1
Filing date	Aug 7, 2024
Priority date	Aug 10, 2023
Publication date	Feb 13, 2025
Grant date	—

Abstract

The present technology relates to a patient interface for use in delivering breathable gas to a patient. The patient interface may comprise a cushion module and a frame. The cushion module may comprise a cushion and a cushion clip. The cushion clip may be configured to hold the cushion module in a substantially fixed position relative to the frame in use. In some forms, the frame and the cushion module are configured to connect together interlocks between the cushion module and the frame is configured to flex to alter a distance between interlocks, and wherein flexing the frame enables the cushion module to be disconnected from the frame.

First claim

1 . A patient interface for use in delivering breathable gas to a patient, the patient interface comprising:
a cushion module; and a frame, wherein the cushion module comprises:
a plenum chamber pressurisable to a therapeutic pressure of at least 4 cmH 2 O above ambient air pressure, said plenum chamber forming a plenum chamber inlet port configured to receive a flow of breathable gas at the therapeutic pressure for breathing by the patient; and
a seal-forming structure provided to the plenum chamber, wherein the seal-forming structure is configured 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 an opening therein such that in use the flow of breathable gas is delivered to the entrance to the patient's airways, the seal-forming structure being configured to maintain said therapeutic pressure in the plenum chamber throughout the patient's respiratory cycle in use;
a first cushion module interlock portion on a first lateral side of a non-patient-facing side of the cushion module;
a second cushion module interlock portion on a second lateral side of the non-patient-facing side of the cushion module,
wherein the frame comprises:
a frame body forming a frame opening allowing the flow of breathable gas to be delivered to the plenum chamber;
two or more headgear connectors for connecting with headgear, the headgear connectors being positioned on respective lateral sides of the frame body in use;
a first frame interlock portion on a first lateral side of a patient-facing side of the frame body;
a second frame interlock portion on a second lateral side of the patient-facing side of the frame body,
wherein the frame and the cushion module are configured to connect together via a first interlock between the first cushion module interlock portion and the first frame interlock portion and via a second interlock between the second cushion module interlock portion and the second frame interlock portion, and wherein the frame is configured to flex to alter a distance between the first frame interlock portion and the second frame interlock portion, and wherein flexing the frame to increase the distance between the first frame interlock portion and the second frame interlock portion enables the cushion module to be disconnected from the frame.

2 . A patient interface as claimed in claim 1 , wherein the first cushion interlock portion comprises a first recess, the second cushion interlock portion comprises a second recess, the first frame interlock portion comprises a first protrusion, and the second frame interlock portion comprises a second protrusion.

3 . A patient interface as claimed in claim 1 , wherein the patient-facing side of the frame body is concave.

4 . A patient interface as claimed in claim 2 , wherein the first frame interlock portion and the second frame interlock portion extend outwardly from a patient-facing side of the frame in a direction substantially parallel to a frontal plane of the patient during use.

5 . A patient interface as claimed in claim 1 , wherein the cushion module comprises a cushion and a cushion clip, wherein the first cushion module interlock portion and the second cushion module interlock portion are provided on the cushion clip.

6 . A patient interface as claimed in claim 5 , wherein the cushion clip forms a loop around the plenum chamber inlet port.

7 . A patient interface as claimed in claim 5 , wherein, when the cushion module is connected to the frame, the cushion clip forms a loop around the frame opening.

8 . A patient interface as claimed in claim 5 , wherein the cushion clip is more rigid than the frame.

9 . A patient interface as claimed in claim 1 , wherein the plenum chamber substantially defines a volume of space and the plenum chamber comprises an anterior wall substantially forming an anterior boundary of the volume of space during use.

10 . A patient interface as claimed in claim 1 , wherein the plenum chamber and the frame together substantially define a volume of space and the frame forms an anterior boundary of the volume of space during use.

11 . A patient interface as claimed in claim 1 , wherein the plenum chamber inlet port is located in a central region of the plenum chamber.

12 . A patient interface as claimed in claim 1 , wherein the plenum chamber inlet port is a first plenum chamber inlet port located on a first lateral side of the plenum chamber and the plenum chamber further forms a second plenum chamber inlet port located on a second lateral side of the plenum chamber, wherein the second plenum chamber inlet port is configured to receive the flow of breathable gas.

13 . A patient interface as claimed in claim 1 , wherein the frame opening is positioned substantially centrally in the frame body.

14 . A patient interface as claimed in claim 1 , wherein the frame body comprises an elongate hollow body with openings at each lateral end, wherein the openings are configured to receive the flow of breathable gas.

15 . A patient interface as claimed in claim 1 , wherein the frame body is configured to bend relatively easily when a force is applied to the lateral edges of the frame body in order to push the lateral edges of the frame body towards or away from the patient's face in use and the frame body is configured to be difficult to bend when a force is applied to the superior and inferior edges of the frame body in order to push the superior and inferior edges of the frame body towards or away from the patient's face in use.

16 . A patient interface as claimed in claim 1 , wherein the patient interface further comprises a rigidiser arm extending laterally outwardly from each distal end of the frame body.

17 . A patient interface as claimed in claim 1 , wherein the frame body comprises a collar surrounding the frame opening.

18 . A patient interface as claimed in claim 1 , wherein the patient interface further comprises a vent configured to allow a continuous flow of gases exhaled by the patient from an interior of the plenum chamber to ambient, said vent being configured to maintain the therapeutic pressure in the plenum chamber in use.

19 . A patient interface as claimed in claim 1 , wherein the patient interface further comprises headgear for positioning and stabilising the patient interface in a therapeutically effective position on the patient's head in use.

Assignees

• ResMed Pty Ltd

Inventors

• Franko Balint
• Chen Jing
• Basiron Abdul Rashid Bin

Classifications

• A61M2202/0225

  Carbon oxides, e.g. Carbon dioxide · CPC title

• A61M16/0622 Primary

  having an underlying cushion · CPC title

• A61M16/0633

  with forehead support · CPC title

• A61M16/0683 Primary

  Holding devices therefor · CPC title

• A61M16/06

  Respiratory or anaesthetic masks · CPC title