MULTIPLE CHAMBERS MASK

• US 20110011397A1
• Filed: 07/06/2010
• Published: 01/20/2011
• Est. Priority Date: 07/06/2009
• Status: Abandoned Application

• Current Assignee: Compumedics Medical Innovation Pty Limited
• Original Assignee: Compumedics Medical Innovation Pty Limited
• Inventors: McCooey, Conor, Ziv, Hedi, Slabbert, Rikus
• Application Number:
  US12/831,175
• Publication Number:
  US 20110011397A1
• Time in Patent Office: Days
• US Class Current: 128/203.12
• CPC Class Codes: A61M 16/06 Respiratory or anaesthetic masks
• CPC Class Codes: A61M 16/0616 with face sealing means comprising a flap or membrane projecting inwards, such that sealing increases with increasing inhalation gas pressure
• CPC Class Codes: A61M 2205/0216 Materials providing elastic properties, e.g. for facilitating deformation and avoid breaking
• CPC Class Codes: A61M 2205/42 Reducing noise

Abstract

The present invention provides methods and apparatuses for gas delivery, in particular, a mask including at least one porous barrier defining at least two chambers in gaseous communication. The porous barrier may include a plurality of pores, which define a tapered shape. The mask may include a pliable nasal cushion. The invention provides a method for providing pressurised gas to a subject by supplying gas from a pressurised source to a mask, transmitting the gas into a first chamber at a first pressure, transmitting the gas into a second chamber at a second pressure through a plurality of pores, and transmitting the gas from the second chamber through a mask exit.

Claims

1. A mask comprising:

a gas supply;

a gas output; and

at least one porous barrier between at least two chambers in gaseous communication.

2. The mask of claim 1, further comprising a conduit in communication with the gas supply and the mask.

3. The mask of claim 1, wherein the porous barrier includes a plurality of pores in communication with said chambers.

4. The mask of claim 3, wherein the pores define a tapered or frusto-conical shape.

5. The mask of claim 1, further comprising a nasal cushion.

6. The mask of claim 1, wherein the at least two chambers further comprise a first chamber is in gaseous communication with the gas supply and a second chamber including pores in gaseous communication with ambient air.

7. A mask delivering pressurised gas to a subject, the mask comprising:

a first aperture in gaseous communication with a pressurised gas supply;

a second aperture for efflux of pressurised gas; and

at least one porous barrier defining at least two chambers, wherein the chambers are in gaseous communication.

8. The mask of claim 7, further comprising a conduit in communication with the gas supply and the mask.

9. The mask of claim 7, wherein the porous barrier includes a plurality of pores in communication with said chambers.

10. The mask of claim 9, wherein the pores define a tapered or frusto-conical shape.

11. The mask of claim 7, further comprising a nasal cushion.

12. The mask of claim 7, wherein the at least two chambers further comprise a first chamber is in gaseous communication with the gas supply and a second chamber including pores in gaseous communication with ambient air.

13. A mask comprising:

a first chamber engaging with at least a portion of a face of a subject;

a second chamber in gaseous communication with said first chamber; and

a porous baffle between the first chamber and second chamber.

14. The mask according to claim 13, wherein the porous baffle comprises tapered or frusto-conical pores.

15. The mask according to claim 13, wherein the first chamber comprises a pliable material.

16. The mask according to claim 13, operable in gaseous delivery of anaesthetics.

17. A method of providing pressurised gas to a subject, the method comprising the steps of:

supplying gas from a pressurised source to a mask;

transmitting the gas into a first chamber at a first pressure;

transmitting the gas into a second chamber at a second pressure; and

transmitting the gas from the second chamber through an exit.

18. The method of claim 17, wherein transmitting the gas to the second chamber or through the exit occurs through a plurality of pores.

19. The method of claim 17, wherein the gas incorporates an anaesthetic substance.

20. The method of claim 17, wherein the gas incorporates a therapeutic substance.

21. The method of claim 17, wherein the gas includes oxygen at a concentration greater than ambient.