NZ780508B2 - Patient Interface With a Seal-Forming Structure Having Varying Thickness - Google Patents
Patient Interface With a Seal-Forming Structure Having Varying Thickness Download PDFInfo
- Publication number
- NZ780508B2 NZ780508B2 NZ780508A NZ78050816A NZ780508B2 NZ 780508 B2 NZ780508 B2 NZ 780508B2 NZ 780508 A NZ780508 A NZ 780508A NZ 78050816 A NZ78050816 A NZ 78050816A NZ 780508 B2 NZ780508 B2 NZ 780508B2
- Authority
- NZ
- New Zealand
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- p1319nz8
- forming structure
- elastomeric seal
- region
- patient
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Abstract
cushioned mask for the detection, diagnosis, treatment, prevention and amelioration of respiratory related disorders including a the first substantially cylindrical region is adapted to prevent the face contacting portion from a blowout when the patient interface is internally pressurized and adjusted by the patient. A cushion assembly for a 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 a patient's airways including at least entrance of the patient's nares, wherein the patient interface is configured to maintain a therapy pressure in a range of about 4 cmH20 to about 30 cmH20 above ambient air pressure in use, throughout the patient's respiratory cycle, while the patient is sleeping, to ameliorate sleep disordered breathing, the cushion assembly comprising: an elastomeric seal-forming structure with a central opening, the elastomeric seal-forming structure being shaped to be bisected by a sagittal plane that includes a line tangent to the elastomeric seal-forming structure at a superior tangent point and at an inferior tangent point; and a chamber at least partially defined by the elastomeric seal-forming structure, wherein the elastomeric seal-forming structure comprises an inner surface forming a boundary for the chamber and comprises an outer surface opposite the inner surface, a second compliant region, and a support region that is located between the first and second compliant regions and superior to the central opening, wherein the wall thickness of the elastomeric seal-forming structure in the first and second compliant regions is less than the wall thickness of the elastomeric seal-forming structure in the support region, and wherein for every point in the support region, a curvature of the inner surface follows a curvature of the outer surface.
Claims (11)
1. A cushion assembly for a 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 a patient's airways including at least entrance of the patient's nares, wherein the patient interface is configured to maintain a therapy pressure in a range of about 4 cmH20 to about 30 cmH20 above ambient air pressure in use, throughout the patient's respiratory cycle, while the patient is sleeping, to ameliorate sleep disordered breathing, the cushion assembly comprising: an elastomeric seal-forming structure with a central opening, the elastomeric seal-forming structure being shaped to be bisected by a sagittal plane that includes a line tangent to the elastomeric seal-forming structure at a superior tangent point and at an inferior tangent point; and a chamber at least partially defined by the elastomeric seal-forming structure, wherein the elastomeric seal-forming structure comprises an inner surface forming a boundary for the chamber and comprises an outer surface opposite the inner surface, wherein the outer surface of the elastomeric seal forming structure comprises: a first compliant region that straddles the sagittal plane at a location superior to the central opening, a second compliant region, and a support region that is located between and borders the first and second compliant regions and is superior to the central opening, wherein the wall thickness of the elastomeric seal-forming structure in the first and second compliant regions is less than the wall thickness of the elastomeric seal-forming structure in the support region, and wherein for every point in the support region, a curvature of the inner surface follows a curvature of the outer surface.
2. The cushion assembly of claim 1, wherein the outer surface of the elastomeric seal-forming structure comprises an inferior region that includes the inferior tangent point and is inferior to the central opening, and wherein the wall thickness of the elastomeric seal-forming structure in the inferior region is thinner than the wall thickness of the elastomeric seal-forming structure in the second compliant region. P1319NZ8 / 506168NZDIV7
3. The cushion assembly of claim 2, wherein the outer surface of the elastomeric seal-forming structure comprises an intermediate region between the inferior region and the second compliant region, and wherein the wall thickness of the elastomeric seal-forming structure in the intermediate region is greater than the wall thickness of the elastomeric seal-forming structure in the inferior region.
4. The cushion assembly of claim 3, wherein the wall thickness of the elastomeric seal-forming structure in the intermediate region is greater than the wall thickness of the elastomeric seal-forming structure in the first compliant region.
5. The cushion assembly of any one of claims 1 to 4, further comprising an elastomeric support portion that supports and is more rigid than the elastomeric seal- forming structure, wherein the elastomeric support portion and the elastomeric seal- forming structure together form the chamber.
6. The cushion assembly of claim 5, further comprising a blowout prevention system with a first end anchored to the elastomeric support portion and a second end that is a continuation of intermediate region of the elastomeric seal-forming structure.
7. The cushion assembly of claim 6, wherein the blowout prevention system is in the form of a tubular structure.
8. The cushion assembly of any one of claims 6 to 7, wherein the support region is positioned at a location that is superior to the blowout prevention system.
9. The cushion assembly of any one of claims 6 to 8, wherein the blowout prevention system is elastomeric.
10. A patient interface comprising: the cushion assembly of any one of claims 1 to 9; a rigid shell removably connected to the cushion assembly; and headgear removably attached to the rigid shell. P1319NZ8 / 506168NZDIV7
11. A CPAP system comprising: the patient interface according to claim 10; a flow generator configured to pressurize a flow of gas; and an air delivery tube configured to deliver the pressurized gas to the patient interface. P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7 P1319NZ8 / 506168NZDIV7
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201562222503P | 2015-09-23 | 2015-09-23 | |
| PCT/AU2016/050228 WO2016149769A2 (en) | 2015-03-25 | 2016-03-24 | Patient interface with blowout prevention for seal-forming portion |
| US201662377158P | 2016-08-19 | 2016-08-19 | |
| NZ74077016 | 2016-09-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NZ780508A NZ780508A (en) | 2024-08-30 |
| NZ780508B2 true NZ780508B2 (en) | 2025-01-22 |
Family
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