Ostomy appliance showing adhesive, barrier and absorbing properties

• US 6,685,683 B1
• Filed: 01/15/2002
• Issued: 02/03/2004
• Est. Priority Date: 07/15/1999
• Status: Expired due to Term

• Current Assignee: Coloplast A/S
• Original Assignee: Coloplast A/S
• Inventors: Nielsen, Per Ole, Clok, Danuta, Nielsen, Inger Mann
• Primary Examiner(s): Lo, Weilun
• Assistant Examiner(s): Bogart, Michael G.
• Application Number:
  US10/030,091
• Time in Patent Office: 749 Days
• Field of Search: 604/327, 604/332-344, 604/355, 428/355.CP, 524/47
• US Class Current: 604/344
• CPC Class Codes: A61F 5/443 having adhesive seals for securing to the body, e.g. of hydrocolloid type, e.g. gels, starches, karaya gums adhesives or sealing pads therefor A61L24/00
• CPC Class Codes: A61L 24/0005 Ingredients of undetermined constitution or reaction products thereof
• CPC Class Codes: A61L 24/0021 Plasticisers
• CPC Class Codes: A61L 24/043 Mixtures of macromolecular materials
• CPC Class Codes: A61L 24/08 Polysaccharides A61L24/043 takes precedence
• CPC Class Codes: A61L 2400/14 Adhesives for ostomy devices
• CPC Class Codes: C08L 23/22 Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefins
• CPC Class Codes: C08L 3/02 Starch; Degradation products thereof, e.g. dextrin
• CPC Class Codes: C08L 5/00 Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00

Abstract

In an ostomy appliance comprising an adhesive, flexible, skin barrier product for securing the appliance to the user'"'"'s skin, said skin barrier having a hole for receiving a stoma, ureter or catheter, and said skin barrier comprising, in the surface to be secured to the user'"'"'s skin, at least a first zone showing adhesive and barrier properties and a second zone showing moisture absorbing properties wherein the first zone comprises a substantially homogeneous mixture of from 15 to 95% by weight of one or more rubbery components and from 2 to 85% by weight of a starch, and furthermore may comprise from 0 to 60% by weight of one or more hydrocolloids, from 0 to 50% by weight of one or more tackifier resins, from 0 to 10% by weight of one or more plasticizers and from 0 to 5% by weight of a pigment, the barrier adhesive “behaves”, in a dry state, Theologically as an adhesive comprising hydrocolloid but which does not absorb moisture in the presence of moisture. Thus, itching when the adhesive is placed on the skin and a light reddening after removal is avoided.

Claims

1. An ostomy appliance comprising an adhesive, flexible, skin barrier product for securing the appliance to a user'"'"'s skin, said skin barrier product having a hole for receiving a stoma, ureter or catheter, and including, in an adhesive surface to be secured to the user'"'"'s skin, at least a first zone showing adhesive and barrier properties and a second zone showing moisture absorbing properties, said first zone including a substantially homogeneous mixture of from 15 to 95% by weight of one or more rubbery components and from 2 to 85% by weight of a starch for modifying absorbency and rheological properties of said first zone.

2. The ostomy appliance as claimed in claim 1 further comprising a border constituted of an adhesive consisting essentially of butyl rubber, PIB, a saturated hydrocarbon resin, hydroxyethyl cellulose, and potato starch.

3. The adhesive, flexible, skin barrier product of claim 1, wherein said first zone further includes 10-50% by weight polyisobutylene, 5-30% by weight butyl rubber, and 25-55% by weight of one or more hydrocolloids.

4. The adhesive, flexible, skin barrier product of claim 1, wherein said first zone further includes 5-30% by weight styrene-isoprene-styrene blockcopolymer, 25-55% by weight of one or more hydrocolloids and 15-50% by weight of one or more tackifier resins.

5. The adhesive, flexible, skin barrier product of claim 1, wherein the starch is present in an amount from 5-50%.

6. An adhesive flexible skin barrier product for use as a semi-manufacture in the production of dressings, skin and wound care devices, fastening means for wound care devices, fastening means for dressings, ostomy equipment, wound drains and incontinence equipment such as external catheters and for similar applications and for use in electrodes for application to the skin, said skin barrier product comprising, in an adhesive surface to be secured to the user'"'"'s skin, at least a first zone showing adhesive and barrier properties and a second zone showing moisture absorbing properties, said first zone including a substantially homogeneous mixture of from 15 to 95% by weight of one or more rubbery components and from 2 to 85% by weight of a starch.

7. The adhesive, flexible, skin barrier product of claim 6, wherein said first zone further includes 10-50% by weight polyisobutylene, 5-30% by weight butyl rubber, and 25-55% by weight of one or more hydrocolloids.

8. The adhesive, flexible, skin barrier product of claim 6, wherein said first zone further includes 5-30% by weight styrene-isoprene-styrene blockcopolymer, 25-55% by weight of one or more hydrocolloids and 15-50% by weight of one or more tackifier resins.

9. The adhesive, flexible, skin barrier product of claim 6, wherein the starch is present in an amount from 5-50%.