Apparatus to provide continuous positive airway pressure
Apparatus for communicating a positive fluid pressure to patient's nasal passageways including a mask engaging the area surrounding such patient's nasal passageways, sealing the mask, for delivering breathable gas to patient's air passageways. The mask is manufactured from a composite material with a relatively soft plastic inner layer and a cloth outer layer. The device has an exhaust valve including a plurality of apertures through the composite material. The apparatus includes a retaining means of at least one strap.
1 . An apparatus for communicating a breathable gas with positive pressure to a patient's air passageways to alleviate sleep apnea symptoms, said apparatus comprising:
(a) a mask manufactured from a composite material having a cloth outer portion and a soft plastic inner portion and having each of a first open end and a second open end, said first open end of said mask being disposed for communicating said positive fluid pressure to such patient's air passageways, said soft plastic inner portion of said mask engageable with at least a portion of an area generally adjacent to such patient's pair of nasal passageways for sealing said mask to said area;
(b) at least one fluid communication means for communicating such positive air pressure to said second open end of said mask;
(c) a means disposed on said mask for retaining said first open end of said mask in said area adjacent such patient's pair of nasal passageways during use; and
(d) a plurality of apertures through said composite material to serve as an exhalation valve for exhausting gas to the atmosphere.
2 . An apparatus, according to claim 2 , wherein said positive fluid communication means is formed from a composite material having a cloth outer portion and a soft plastic inner portion.
3 . An apparatus, according to claim 1 , wherein said fluid communication means engageable with said second open end of said mask is tubing.
4 . An apparatus, according to claim 1 , wherein a connector is attached between such source of positive air pressure and said fluid communication means.
5 . An apparatus, according to claim 1 wherein said apertures are about 0.005 inches in diameter.
6 . An apparatus, according to claim 1 wherein the apertures are disposed on said mask.
7 . An apparatus, according to claim 2 wherein the apertures are disposed on said fluid communication means.
8 . An apparatus, according to claim 2 wherein the apertures are disposed on said fluid communication means and said mask.
9 . An apparatus, according to claim 1 wherein at least a portion of said first open end of said mask has a soft material covering the interior layer of said composite material attached to the interior layer and exterior layer of said composite material of said mask.
10 . An apparatus according to claim 9 wherein substantially all of said first open end of said mask is covered with said outer layer of said composite material.
11 . An apparatus, according to claim 1 wherein at said first open end of said mask said outer layer extends beyond said inner layer of said composite material so that at least a portion of said first open end of said mask said outer layer of said composite material covers the end of said inner layer of said composite material at said first open end of said mask and said extended outer layer of said composite material is attached to the interior surface of said inner layer of said composite material of said mask.
12 . An apparatus according to claim 11 wherein substantially all of said first open end of said mask is covered with said outer layer of said composite material.
13 . An apparatus according to claim 1 wherein said mask further has dividing member so that said mask separately seals each nasal passageway and further having at least two fluid pressure communications means.
14 . An apparatus according to claim 13 wherein a said mask includes a pliable member to further secure said mask on patient's face.
15 . An apparatus according to claim 13 wherein a Y connector is placed between such source of positive fluid pressure and said at least two fluid communications means.
16 . An apparatus, according to claim 1 , wherein said means disposed on said mask and engageable with said fluid communication means for retaining said mask in position in during use is at least one strap.
17 . An apparatus, according to claim 16 , wherein said at least one strap is formed integrally with said apparatus as a single piece formed from a composite material having a cloth outer portion and a soft plastic inner portion.
18 . An apparatus, according to claim 16 , wherein said at least one strap includes an adjustment means for fitting different size heads of various patients.
19 . An apparatus, according to claim 16 , wherein said adjustment means is selected from the group consisting of a hook and loop type fastener and a tie type fastener.
20 . An apparatus according to claim 16 wherein said retaining means further includes at least a second strap, said first strap having a top edge a first end and a second end and a second strap having a first end and a second end wherein said first strap first and second ends attach to said side of said mask and said first end of said second strap attaches to said top of said mask and said second end slidably attaches to said first strap at the back of user's head.
21 . An apparatus according to claim 16 wherein said at least first and second straps have an adjusting means.