Ostomy appliance
First Claim
1. An ostomy appliance comprising a collection pouch formed of plastic film having a wall provided with a stoma opening;
- a flexible and generally planar faceplate including an outer ring of thin, microporous sheet material and an inner ring of flexible sheet material impervious to gases and body fluids;
said rings having coaxial openings aligned with said stoma opening and each having inner and outer margins;
each of said rings also having a distal surface facing said pouch and a proximal surface facing away from said pouch;
an adhesive layer on the proximal surface of said outer microporous ring;
said opening of said outer microporous ring being substantially larger than said opening of said inner impervious ring;
said inner impervious ring having its proximal surface adjacent the outer margin thereof secured to the distal surface of said outer microporous ring adjacent the inner margin thereof;
an adhesive barrier ring secured to the proximal surface of said outer microporous ring adjacent the inner margin thereof and having a portion extending radially inwardly from said inner margin;
means connecting said inner impervious ring adjacent the inner margin thereof to said pouch about said stoma opening; and
annular fluid-impervious sealing means securing said proximal surface of said impervious inner ring and said inwardly extending portion of said barrier ring adjacent the inner margin of said outer microporous ring for preventing stomal fluids from contacting the inner margin of said microporous ring.
1 Assignment
0 Petitions
Accused Products
Abstract
As ostomy appliance having a collection pouch and a flexible faceplate, the faceplate including an outer ring of thin, microporous sheet material and an inner ring of flexible, thermoplastic film impervious to gases and body fluids. The outer microporous ring surrounds the inner ring so that their adjacent margins overlap and are sealed to each other. The faceplate also includes a barrier ring secured to the inner marginal portion of the microporous ring on the side opposite from the attachment of the impervious inner ring. A fluid-impervious annular seal is provided between the impervious inner ring and the barrier ring at a location radially inwardly from the microporous ring, thereby securing the parts together and isolating the inner margin of the microporous ring from contact by stomal fluids. In preferred embodiments, the faceplate may include a relatively rigid, convex pressure ring and the impervious inner ring may extend a substantial distance radially inwardly from the seal with the inner margin of that ring secured to an outwardly extending thermoplastic web that in turn is connected to a faceplate coupling ring.
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Citations
12 Claims
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1. An ostomy appliance comprising a collection pouch formed of plastic film having a wall provided with a stoma opening;
- a flexible and generally planar faceplate including an outer ring of thin, microporous sheet material and an inner ring of flexible sheet material impervious to gases and body fluids;
said rings having coaxial openings aligned with said stoma opening and each having inner and outer margins;
each of said rings also having a distal surface facing said pouch and a proximal surface facing away from said pouch;
an adhesive layer on the proximal surface of said outer microporous ring;
said opening of said outer microporous ring being substantially larger than said opening of said inner impervious ring;
said inner impervious ring having its proximal surface adjacent the outer margin thereof secured to the distal surface of said outer microporous ring adjacent the inner margin thereof;
an adhesive barrier ring secured to the proximal surface of said outer microporous ring adjacent the inner margin thereof and having a portion extending radially inwardly from said inner margin;
means connecting said inner impervious ring adjacent the inner margin thereof to said pouch about said stoma opening; and
annular fluid-impervious sealing means securing said proximal surface of said impervious inner ring and said inwardly extending portion of said barrier ring adjacent the inner margin of said outer microporous ring for preventing stomal fluids from contacting the inner margin of said microporous ring. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- a flexible and generally planar faceplate including an outer ring of thin, microporous sheet material and an inner ring of flexible sheet material impervious to gases and body fluids;
Specification