Ostomy appliance with multiple release liners

• US 9,233,019 B2
• Filed: 06/17/2008
• Issued: 01/12/2016
• Est. Priority Date: 06/25/2007
• Status: Active Grant

• Current Assignee: Coloplast A/S
• Original Assignee: Coloplast A/S
• Inventors: Lykke, Mads, Stroebech, Esben, Bach, Anders, Toftkaer, Astrid, Buus, Hasse, Kongebo, Tom
• Primary Examiner(s): Zalukaeva, Tatyana
• Assistant Examiner(s): TOWNSEND, GUY K
• Application Number:
  US12/452,360
• Publication Number:
  US 20100217215A1
• Time in Patent Office: 2,765 Days
• Field of Search: 604/344, 604/336
• US Class Current: 1/1
• CPC Class Codes: A61F 5/4404 Details or parts
• 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: A61F 5/445 Colostomy, ileostomy or urethrostomy devices A61F5/441, A61F5/442, A61F5/443 take precedence
• CPC Class Codes: A61L 15/225 Mixtures of macromolecular compounds
• CPC Class Codes: A61L 15/26 Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof A61L15/225 takes precedence
• CPC Class Codes: A61L 15/425 Porous materials, e.g. foams or sponges
• CPC Class Codes: A61L 24/0036 Porous materials, e.g. foams or sponges
• CPC Class Codes: A61L 24/043 Mixtures of macromolecular materials
• CPC Class Codes: A61L 24/046 obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds A61L24/043 takes precedence
• CPC Class Codes: C08L 71/02 Polyalkylene oxides

Abstract

An ostomy appliance for attachment to the stoma body comprising a soft adhesive wafer (1) having a tensile strength at 20% strain of less than 0.75N/4 mm and a collecting pouch attachable to an adhesive wafer, the wafer comprises a backing layer and a skin-facing adhesive layer, wherein the adhesive skin-facing surface of the wafer is provided with at least two release liners (3, 4) each covering at least a part of the adhesive surface and together covering the entire adhesive surface.

Claims

1. An ostomy appliance for attachment to a stoma body comprising a soft adhesive wafer and a collecting pouch attachable to the adhesive wafer at an attachment zone thereof, wherein the wafer includes a backing layer and a skin-facing adhesive layer with an adhesive surface, the adhesive surface of the wafer having a three split release liner system, with two folded side liners not covering the middle section of the wafer and with a third middle liner having folded edge portions and covering the middle portion of the adhesive surface having the same width as the attachment zone for the pouch or narrower, the release liners each covering at least a part of the adhesive surface and together these liners covering the entire adhesive surface, said wafer having a tensile strength at 20% strain of less than 0.75N/4 mm.

2. The ostomy appliance according to claim 1, wherein the release liners are organised symmetrically over the wafer.

3. The ostomy appliance according to claim 1, wherein the release liners are organised asymmetrically over the wafer.

4. The ostomy appliance according to claim 1, wherein the release liners are siliconised.

5. The ostomy appliance according to claim 1, wherein the adhesive has a G* at 0.01 hz of less than 15000 Pa.

6. The ostomy appliance according to claim 1, wherein the adhesive has a G* at 0.01 hz of less than 7500 Pa.

7. The ostomy appliance according to claim 1, wherein the adhesive comprises ethylene vinyl acetate.

8. The ostomy appliance according to claim 1, wherein the backing layer is in the form of a polymer film, coating, laminate, textile or non-woven.

9. The ostomy appliance according to claim 1, wherein the backing layer has a force below 0.75 N/4 mm at 20% extension.

10. The ostomy appliance according to claim 1, wherein the collecting pouch is detachable.

11. The ostomy appliance according to claim 1, wherein the collecting pouch is integrated with the wafer.

12. The ostomy appliance according to claim 1, wherein the backing layer has a force below 0.5 N/4 mm at 20% extension.

13. The ostomy appliance according to claim 1, wherein the adhesive comprises a polyalkyleneoxide polymer and an organosiloxane based cross-linked adhesive system.

14. The ostomy appliance according to claim 13, wherein the polyalkylene oxide polymer is polypropyleneoxide.