Contoured adhesive wafer for ostomy appliance
First Claim
1. A wafer for adhesively attaching an ostomy appliance to peristomal skin surfaces of a wearer, said wafer having an adhesive layer consisting of water-absorbing and water-swellable skin barrier material in which particles of one or more hydrocolloids are dispersed in a soft, pliant adhesive medium, and a flexible backing layer for attaching said wafer to a collection pouch;
- said adhesive layer being contoured and having a thin peripheral portion and a thick body portion;
said wafer having a stoma-receiving opening surrounded by a circular area of reference having a perimeter concentric with said opening and a radius equal to the distance from the center of said opening to the lowermost limits of said thick body portion;
said circular area of reference including semicircular upper and lower halves wherein said lower half contains a greater quantity of skin barrier material than said upper half.
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Accused Products
Abstract
An adhesive wafer for an ostomy pouch, and the combination of such a wafer and pouch, in which the adhesive layer of the wafer is composed of a hydrocolloid-containing skin barrier material and is contoured to provide a relatively thick body portion surrounded by a relatively thin peripheral portion, are disclosed. The wafer has a stoma-receiving opening, and the adhesive layer is of developed shape so that most, if not all, of the relatively thick body portion is located immediately below and to the sides of the stoma-receiving opening. The relatively thin peripheral portion of the adhesive layer is preferably embossed to provide a pattern of discrete, non-connecting depressions separated and isolated from each other by flat-top ridges dimensioned and arranged so that a skin surface engaged by said embossed surface primarily contacts only such ridges.
63 Citations
13 Claims
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1. A wafer for adhesively attaching an ostomy appliance to peristomal skin surfaces of a wearer, said wafer having an adhesive layer consisting of water-absorbing and water-swellable skin barrier material in which particles of one or more hydrocolloids are dispersed in a soft, pliant adhesive medium, and a flexible backing layer for attaching said wafer to a collection pouch;
- said adhesive layer being contoured and having a thin peripheral portion and a thick body portion;
said wafer having a stoma-receiving opening surrounded by a circular area of reference having a perimeter concentric with said opening and a radius equal to the distance from the center of said opening to the lowermost limits of said thick body portion;
said circular area of reference including semicircular upper and lower halves wherein said lower half contains a greater quantity of skin barrier material than said upper half. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- said adhesive layer being contoured and having a thin peripheral portion and a thick body portion;
Specification