Seal for controlled evacuation ostomy appliance

• US 20170281397A1
• Filed: 03/20/2017
• Published: 10/05/2017
• Est. Priority Date: 09/16/2004
• Status: Abandoned Application

• Current Assignee: Convatec Incorporated (ConvaTec Group Plc)
• Original Assignee: Convatec Incorporated (ConvaTec Group Plc)
• Inventors: Davies, Geraint, Cline, John, Gregory, Christopher C., Cucknell, Alan, Scarfe, Julian, Cauwood, Pete
• Application Number:
  US15/464,243
• Publication Number:
  US 20170281397A1
• Time in Patent Office: Days
• CPC Class Codes: A61F 5/4404 Details or parts
• CPC Class Codes: A61F 5/441 having venting or deodorant means, e.g. filters ; having antiseptic means, e.g. bacterial barriers
• CPC Class Codes: A61F 5/445 Colostomy, ileostomy or urethrostomy devices A61F5/441, A61F5/442, A61F5/443 take precedence

Abstract

A stoma seal is described for a controlled evacuation ostomy appliance. The stoma seal may have a liquid-responsive property, such as hydrophobic, hydrophilic or absorptive. The stoma seal may have a non-smooth surface, e.g., at a microstructure scale. The non-smooth surface may consist of tortuous channels, protruding seals, or a confronting apertured or porous layer. The liquid-responsive property and/or the non-smooth surface may facilitate separation of flatus from faecal matter and/or facilitate venting of flatus while obstructing stool.

Claims

1. A stoma seal for a controlled evacuation ostomy appliance, the stoma seal being configured to provide a liquid responsive property, in use to facilitate separation of flatus from faecal matter in contact with the stoma seal.

2. The stoma seal of claim 1, wherein the liquid responsive property is repulsion of liquid.

3. The stoma seal of claim 2, wherein the stoma seal comprises or carries hydrophobic material.

4. The stoma seal of claim 1, wherein the liquid responsive property is attraction of liquid.

5. The stoma seal of claim 4, wherein the stoma seal comprises or carries hydrophilic material.

6. The stoma seal of claim 1, wherein the liquid responsive property is absorption of liquid.

7. The stoma seal of claim 6, wherein the stoma seal comprises or carries a superabsorbent material.

8. The stoma seal of claim 1, wherein the stoma seal comprises or carries carbon.

9. The stoma seal of claim 1, wherein the stoma seal has a non-smooth surface.

10. The stoma seal of claim 1, wherein an external surface of the stoma seal has the liquid responsive property.

11. The stoma seal of claim 1, wherein the stoma seal is at least party porous, and an internal surface of the stoma seal has the liquid responsive property.

12. A stoma seal for a controlled evacuation ostomy appliance, the stoma seal comprising a non-smooth surface.

13. The stoma seal of claim 12, wherein the non-smooth surface is configured in use to facilitate separation of flatus from faecal matter in contact with the stoma seal.

14. The stoma seal of claim 12, wherein the non-smooth surface is an external surface of the stoma seal.

15. The stoma seal of claim 12, wherein the stoma seal is at least partly porous, and the non-smooth surface is an internal surface of the stoma seal.

16. The stoma seal of claim 12, wherein the non-smooth surface comprises a micro structure.

17. The stoma seal of claim 12, wherein the non-smooth channels comprise a plurality of channels.

18. The stoma seal of claim 17, wherein the channels are tortuous.

19. The stoma seal of claim 17, wherein the channels lead generally in a direction extending outwardly from the stoma.

20. The stoma seal of claim 12, wherein the non-smooth surface comprises a plurality of protruding seals.

21. The stoma seal of claim 20, wherein the seals are selected as one or more of:

ridges;

flaps;

ribs.

22. The stoma seal of claim 20, wherein the seals are arranged generally transverse to a direction of flatus flow from the stoma.

23. The stoma seal of claim 20, wherein the seals are arranged in a generally concentric configuration.

24. The stoma seal of claim 12, wherein the non-smooth surface as a non-flat surface contour.

25. The stoma seal of claim 12, wherein the stoma seal comprises a confronting cover layer, the cover layer being porous or apertured, whereby the cover layer provides the non-smooth surface.

26. The stoma seal of claim 25, wherein the confronting cover layer has a mesh or net configuration.

27-30. -30. (canceled)