Ostomy pouch attachment adhesives resistant to stomal effluent

• US 20050080155A1
• Filed: 10/07/2004
• Published: 04/14/2005
• Est. Priority Date: 10/14/2003
• Status: Abandoned Application

• Current Assignee: Convatec Technologies, Inc. (ConvaTec Group Plc)
• Original Assignee: Convatec Technologies, Inc. (ConvaTec Group Plc)
• Inventors: Sambasivam, Mahesh, Fattman, George F.
• Application Number:
  US10/960,546
• Publication Number:
  US 20050080155A1
• Time in Patent Office: Days
• US Class Current: 523/105
• 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 24/0021 Plasticisers
• CPC Class Codes: A61L 24/043 Mixtures of macromolecular materials
• CPC Class Codes: C08L 53/02 of vinyl-aromatic monomers and conjugated dienes

Abstract

An adhesive for use in an ostomy device. The adhesive is resistant to stomal effluent and includes a multi-block copolymer of vinyl aromatic and olefin comonomers, poly(ethylene vinyl acetate), or combinations thereof. The adhesive helps secure the effluent containment component or pouch to the body attachment component or wafer.

Claims

1. An ostomy device comprising an attachment component for attachment to the body, an effluent containment component secured to the attachment component, and a coupling mechanism for securing the effluent containment component to the attachment component, wherein the coupling mechanism includes an adhering component with an adhesive that comprises either a multi-block copolymer of vinyl aromatic and olefin comonomers, or poly(ethylene vinyl acetate), or combinations thereof.

2. The ostomy device of claim 1 wherein the device is a one-piece or a two-piece appliance.

3. The ostomy device of claim 1 wherein the device is a two-piece appliance, and the adhesive permits repositioning of one piece relative to the other.

4. The ostomy device of claim 1 wherein the multi-block copolymer of vinyl aromatic and olefin comonomers is selected from a group consisting of poly(styrene-isoprene-styrene), poly(styrene-butadiene-styrene), poly(styrene ethylene-butylene-styrene), poly(styrene-ethylene-propylene-styrene), poly(styrene-isobutylene-styrene), poly(styrene-ethylene-ethylene-propylene-styrene), and combinations thereof.

5. The ostomy device of claim 1 wherein the multi-block copolymer of vinyl aromatic and olefin comonomers is blended with a plasticizer.

6. The ostomy device of claim 5 wherein the plasticizer is an oil.

7. The ostomy device of claim 5 wherein the plasticizer is a wax.

8. The ostomy device of claim 5 wherein the plasticizer is an adipate or a phthalate.

9. The ostomy device of claim 1 wherein the multi-block copolymer of vinyl aromatic and olefin comonomers includes an ABA triblock copolymer structure.

10. The ostomy device of claim 1 wherein the multi-block copolymer of vinyl aromatic and olefin comonomers includes a combination of ABA triblock and AB diblock copolymer structures.

11. The ostomy device of claim 1 wherein the multi-block copolymer of vinyl aromatic and olefin comonomers includes an (AB)_x multiple block copolymer structure, where x>

1.

12. The ostomy device of claim 1 wherein the multi-block copolymer of vinyl aromatic and olefin comonomers is selected from the group consisting of an (AB)_x multiple block copolymer structure where x>

1, ABA triblock copolymer, ABA triblock in combination with AB diblock copolymer structures, (AB)_x multiple block copolymer where x>

1 in combination with AB diblock copolymer structures, and combinations thereof.

13. The ostomy device of claim 6 wherein the plasticizing oil is either a naphthenic oil or a paraffinic mineral oil.

14. The ostomy device of claim 1 wherein the multi-block copolymer of vinyl aromatic and olefin comonomers is also blended with a tackifier selected from the group consisting of rosins, rosin esters, terpenes, terpene-phenolics, aliphatic resins, mixed aliphatic-aromatic resins, aromatic-modified aliphatic resins, aromatic resins, and combinations thereof.

15. The ostomy device of claim 1 wherein the poly(ethylene vinyl acetate) has a vinyl acetate content between about 10% and about 50% and is blended with a tackifier selected from the group consisting of rosins, rosin esters, terpenes, terpene-phenolics, aliphatic resins, mixed aliphatic-aromatic resins, aromatic-modified aliphatic resins, aromatic resins, and combinations thereof.

16. The ostomy device of claim 15 wherein the poly(ethylene vinyl acetate) and tackifier are also blended with a plasticizing oil.

17. The ostomy device of claim 15 wherein the poly(ethylene vinyl acetate) and tackifier are also blended with a wax.

18. The ostomy device of claim 1 wherein multi-block copolymer of vinyl aromatic and olefin comonomers comprises from about 20 to about 85 percent by weight of the dry adhesive.

19. The ostomy device of claim 5 wherein the plasticizer comprises from 0 to about 40 percent by weight of the dry adhesive.

20. The ostomy device of claim 14 wherein the tackifier comprises from about 5 to about 60 percent of the dry adhesive.

21. The ostomy device of claim 1 wherein the adhering component includes a film or a foam.

22. The ostomy device of claim 21 wherein the film or foam is selected from the group consisting of polyethylene (PE), polypropylene (PP), poly(ethylene-vinylacetate) (EVA), poly(vinyl chloride) (PVC), polystyrene (PS), polyurethane (PU), poly(ethylene terephthalate) (PET), poly(ether amide), poly(ester amide), poly(ether ester), and their copolymers.

23. The ostomy device of claim 1 wherein the attachment component includes materials selected from the group consisting of polyethylene (PE), polypropylene (PP), poly(ethylene-vinyl acetate) (EVA), poly(vinly chloride) (PVC), polystyrene (PS), polyurethane (PU), poly(ethylene terephthalate) (PET), poly(ether amide), poly(ester amide), poly(ether ester), and their copolymers.

24. The ostomy device of claim 21 wherein the adhering component is a foam coated with an adhesive, and the foam coated with an adhesive has a peel strength from stainless steel per ASTM D3330 from about 3.0 to about 21.0 Newtons/inch.

25. The ostomy device of claim 21 wherein the adhering component is a foam coated with an adhesive, and the foam coated with an adhesive has a peel strength from the attachment component from about 0.3 to about 6.0 Newtons/inch using the test method of ASTM D3330 wherein the stainless steel substrate is replaced with the attachment component material.

26. The ostomy device of claim 1 wherein the adhesive resists migration of effluent for at least 12 hours.

27. The ostomy device of claim 1 wherein the device is a one-piece appliance having the attachment component and effluent containment component adhesively secured together.