Mask apparatus

• US 5,592,938 A
• Filed: 08/09/1994
• Issued: 01/14/1997
• Est. Priority Date: 06/08/1992
• Status: Expired due to Term

• Current Assignee: RIC INVESTMENTS LLC (Respironics Incorporated)
• Original Assignee: Respironics Incorporated
• Inventors: Scarberry, Eugene N., Handke, Patrick M.
• Primary Examiner(s): Dvorak, Linda C.
• Application Number:
  US08/288,005
• Time in Patent Office: 889 Days
• Field of Search: 128/206.24, 128/206.26, 128/206.21, 128/206.22, 128/206.25, 128/847, 128/848, 128/857, 128/863
• US Class Current: 128/206.24
• CPC Class Codes: A61H 2201/0161 Size reducing arrangements when not in use, for stowing or transport
• CPC Class Codes: A61H 2201/1645 contoured to fit the user
• CPC Class Codes: A61H 31/02 "Iron-lungs" , i.e. involving chest expansion by applying underpressure thereon, whether or not combined with gas breathing means
• CPC Class Codes: A61M 16/06 Respiratory or anaesthetic masks
• CPC Class Codes: A61M 16/0605 Means for improving the adaptation of the mask to the patient
• 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 16/0627 with sealing means on a part of the body other than the face, e.g. helmets, hoods or domes
• CPC Class Codes: A61M 16/0666 Nasal cannulas or tubing devices for improving normal breathing through the nose A61F5/08; nose filters A62B23/06; outside holding devices A61M25/02
• CPC Class Codes: A61M 2016/0661 with customised shape
• CPC Class Codes: A61M 2205/0238 the material being a coating or protective layer
• CPC Class Codes: A61M 2205/15 Detection of leaks

Abstract

A method and apparatus for treating obstructive sleep apnea and other disorders by the novel application of pressure varying from ambient pressure to external portions of a patient'"'"'s neck, and a novel breathing mask and seal apparatus.

Claims

1. A mask apparatus for enclosing a selected area of a patient'"'"'s face adjacent at least the patient'"'"'s nose or mouth comprising:

a body member formed to enclose a space and to confront a selected area of a patient'"'"'s face to enclose said space adjacent thereto;

a flexible means carried by said body member and extending thereon to lie adjacent a peripheral extent of the selected area of a patient'"'"'s face;

peripheral seal means associated with said flexible means and operable to engage the patient'"'"'s face in sealing engagement therewith to at least partially enclose said space;

said flexible means being deformable upon engagement of said seal means with the patient'"'"'s face in a manner to conform said seal means closely to the portions of the patient'"'"'s face in contact therewith;

said flexible means including a flexible wall forming chamber means and a plurality of interengagable elements confined within said chamber means;

vacuum drawing means which is cooperable with said chamber means and is selectively operable to draw a partial vacuum therein such that relatively greater pressure acting on external surfaces of said flexible wall moves said interengagable elements into mechanical interengagement to thereby maintain said seal means in closely conforming relation with the patient'"'"'s face; and

adhesive means which is effective to maintain said mutual interengagement of said interengagable elements upon release of the partial vacuum within said chamber means.

2. The apparatus as set forth in claim 1 additionally including pressure control means cooperable with said apparatus to selectively vary the magnitude of pressure within said space.

3. The apparatus as set forth in claim 1 wherein said adhesive is a heat curable adhesive coming led with said interengagable elements within said chamber means.

4. The apparatus as set forth in claim 1 wherein said adhesive means is a hot melt adhesive comingled with said interengagable elements within said chamber means.

5. The apparatus as set forth in claim 1 wherein said interengagable elements and said adhesive means are common integral units comprised of a plurality of discrete elements of adhesive.

6. The apparatus as set forth in claim 1 wherein said interengagable elements includes a plurality of solid particles.

7. The apparatus as set forth in claim 6 wherein said solid particles are of a size that they collectively exhibit the character of a volume of powder.

8. The apparatus as set forth in claim 6 wherein said solid particles are of a size that they collectively exhibit the character of a volume of granulated matter.

9. The apparatus as set forth in claim 6 wherein said solid particles are of a size that they collectively exhibit the character of a mass of discrete beads of matter.

10. The apparatus as set forth in claim 1 additionally including connection means communicating with said space and adapted to be connected to a source of breathing gas for delivery of breathing gas to the airway of the patient.