Adhesive wafer with embossed skin-contacting surface
First Claim
1. An adhesive wafer for an ostomy faceplate or wound dressing, comprising an adhesive layer of moisture-absorbing skin barrier material having a continuous phase composed of a tacky elastomer and a discontinuous phase consisting essentially of one or more moisture-absorbing and swellable hydrocolloids dispersed in said continuous phase;
- said adhesive layer having a bodyside surface for direct contact with a patient'"'"'s skin and a back surface opposite from said bodyside surface; and
a flexible backing layer covering said back surface of said adhesive layer;
wherein the improvement comprises said adhesive layer having at least a portion of said bodyside surface thereof embossed to provide a pattern of discrete, non-connecting depressions separated and isolated from each other by skin-contacting ridges dimensioned and arranged so that a skin surface engaged by said embossed surface primarily contacts only said ridges of said adhesive and wherein said ridges have flat and generally co-planar skin-contacting surface portions.
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Accused Products
Abstract
An adhesive wafer, which is especially suitable for use as a faceplate for an ostomy appliance but may also be used as a wound dressing, has an adhesive layer of hydrocolloid-containing skin barrier material and a flexible backing layer extending over one surface of the adhesive layer. The opposite skin-contacting surface of the adhesive layer is embossed to provide a pattern of discrete, non-connecting depressions separated and isolated from each other by flat-topped ridges dimensioned and arranged so that a skin surface engaged by said embossed surface primarily contacts only such ridges.
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Citations
25 Claims
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1. An adhesive wafer for an ostomy faceplate or wound dressing, comprising an adhesive layer of moisture-absorbing skin barrier material having a continuous phase composed of a tacky elastomer and a discontinuous phase consisting essentially of one or more moisture-absorbing and swellable hydrocolloids dispersed in said continuous phase;
- said adhesive layer having a bodyside surface for direct contact with a patient'"'"'s skin and a back surface opposite from said bodyside surface; and
a flexible backing layer covering said back surface of said adhesive layer;
wherein the improvement comprises said adhesive layer having at least a portion of said bodyside surface thereof embossed to provide a pattern of discrete, non-connecting depressions separated and isolated from each other by skin-contacting ridges dimensioned and arranged so that a skin surface engaged by said embossed surface primarily contacts only said ridges of said adhesive and wherein said ridges have flat and generally co-planar skin-contacting surface portions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- said adhesive layer having a bodyside surface for direct contact with a patient'"'"'s skin and a back surface opposite from said bodyside surface; and
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15. An ostomy appliance comprising a wafer and a collection pouch;
- said collection pouch having a side wall with a stoma-receiving opening therein;
said wafer comprising an adhesive layer of moisture-absorbing skin barrier material having a continuous phase composed of a tacky elastomer and a discontinuous phase consisting essentially of one or more moisture-absorbing and swellable hydrocolloids dispersed in said continuous phase;
said adhesive layer having a bodyside surface for direct contact with a patient'"'"'s skin and a back surface opposite from said bodyside surface;
said wafer also including a flexible thermoplastic backing layer covering said back surface of said adhesive layer;
said wafer having a stoma-receiving opening aligned with the opening of said pouch and said backing layer of said wafer being sealed to said pouch in an annular sealing zone immediately surrounding the stoma-receiving openings of said wafer and pouch;
wherein the improvement comprises said adhesive layer having at least a portion of said bodyside surface thereof embossed to provide a pattern of discrete, non-connecting depressions separated and isolated from each other by skin-contacting ridges dimensioned and arranged to that a skin surface engaged by said embossed surface primarily contacts only said ridges of said adhesive and wherein said ridges have flat and generally co-planar skin-contacting surface portions. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
- said collection pouch having a side wall with a stoma-receiving opening therein;
Specification