Seal forming portion, pad and cushion for a patient interface and method of manufacturing

Patent metadata

Field	Value
Publication number	US-2016001029-A1
Application number	US-201514741930-A
Country	US
Kind code	A1
Filing date	Jun 17, 2015
Priority date	Jun 17, 2014
Publication date	Jan 7, 2016
Grant date	—

Abstract

It is discloses a patient interface 3000 comprising a seal forming portion 11, a pad 10, and a cushion 20. The seal forming portion 11 may comprise a base surface 111 and a plurality of fibers 112 fixed to and extending away from said base surface 111 for contacting a patient's skin. The cushion 20 may comprise at least along a portion of the circumference a first structure 22 having an elongate section 24 joined with at least one end section 26 oriented substantially perpendicular or at an angle to the elongate section 24. A first end A of the elongate section 24 may be connected or connectable to a frame member 30. The end section 26 may be provided at an opposing second end B of the elongate section 24. The pad 10 may comprise a resilient foam material layer with the seal forming portion 11. The pad 10 may be adapted to be connected to the cushion 20.

First claim

1 . A patient interface comprising a seal forming portion for contacting a user's skin, a pad, and a cushion;
wherein the pad comprises a resilient foam material layer constituting a base surface of the seal forming portion, wherein the pad is adapted to be connected to the cushion, wherein the seal forming portion comprises the base surface and a plurality of fibers fixed to and extending away from said base surface for contacting a patient's skin; and wherein the cushion comprises at least along a portion of the circumference a first structure having an elongate section joined with at least one end section oriented substantially perpendicular or at an angle to the elongate section, wherein a first end of the elongate section is connected or connectable to a frame member, and wherein the end section is provided at an opposing second end of the elongate section, wherein the first structure is a T-beam shaped structure, wherein the elongate section is the web portion and the end section is the flange portion, and wherein the pad is connected to the flange section.

2 . The patient interface according to claim 1 , wherein the flange portion is connected or connectable with the pad comprising the seal forming portion.

3 . The patient interface according to claim 1 , wherein at least a portion of the flange portion is adapted to rotate relative to the second end of the web portion.

4 . The patient interface according to claim 1 , wherein the flange portion comprises two arms extending from the second end of the web portion in a lateral direction, and preferably wherein the first and/or second arm is/are adapted to rotate relative to the second end.

5 . The patient interface according to claim 4 , wherein the flange portion is adapted to rock around the second end, the two arms of the flange portion being the rocker arms, wherein the flange portion is adapted to rock around the second end when the patient's skin is in contact, preferably via a portion of the pad, with the first and/or second arm.

6 . The patient interface according to claim 1 , wherein the flange portion is adapted to rock around the second end, and wherein the cushion, particularly the web portion, is provided with a resilience in a nose receiving portion of the cushion so as to clamp the cushion on the ridge of the patient's nose.

7 . The patient interface according to claim 1 , wherein the web portion is adapted to bulge in a lateral direction.

8 . The patient interface according to claim 1 , wherein the cushion comprises at least one bellows structure and/or, preferably outwardly oriented and pre-shaped bulge, preferably located in the nose receiving portion and/or preferably located in the web portion.

9 . The patient interface according to claim 1 , wherein the fiber has a length measured from the proximate end to the distal end between about 0.01 and 5.0 mm, more preferably between about 0.05 mm and 2.0 mm and most preferably between about 0.1 mm and 1.0 mm.

10 . The patient interface according to claim 1 , wherein the plurality of fibers provide a higher resilience in the nose ridge area than in other areas of the seal forming portion.

11 . The patient interface according to claim 1 , wherein the plurality of fibers are made from any one from the group consisting of: cotton, wool, viscose, nylon, and cellulose.

12 . The patient interface according to claim 1 , wherein the pad has a pad thickness between about 1.5 mm to 26 mm, preferably between about 3.0 mm and 13 mm.

13 . The patient interface according to claim 1 , wherein the pad is provided with a higher resilience than the cushion, the cushion preferably being provided with a resilience to generally adapt to the individual shape of a patient's face.

14 . The patient interface according to claim 1 , wherein the pad comprises a portion of reduced stiffness, preferably in the apex of the pad, preferably to facilitate relative movement of portions of the pad adjacent the patient's nose region.

Assignees

• Resmed Ltd

Inventors

• Bayer Christian
• Biener Achim
• Burz Johann Sebastian
• Eibl Robert
• Kirchberger Andreas
• Lang Bernd Christoph
• Nickol Johannes
• Rothfuss Jens

Classifications

• A61M2205/0222

  Materials for reducing friction · CPC title

• A61M16/0638

  in the form of a pivot · CPC title

• A61M16/0611 Primary

  with a gusset portion · CPC title

• A61M2016/0661

  with customised shape · CPC title

• A61M16/0622 Primary

  having an underlying cushion · CPC title