Stoma coat
The present invention relates to a prosthesis, referred to as stoma coat, for implantation in a body wall for cooperating with a body duct to provide a stoma, as well as to its use in a surgical method for creating a stoma. The present invention further relates to accessories for use with said prosthesis and to a kit comprising said prosthesis and said accessories.
1. A stoma coat, comprising:
a flexible cone-shaped sleeve of a first biocompatible material having a narrow end and a wider end opposite of said narrow end, and further having an external flange comprising a distal surface and an internal flange located at said narrow end, wherein the distal surface of the external flange is configured to be in contact with an inner surface of a body wall of an animal body; and
a rigid tube of a second biocompatible material having an outside diameter, a distal end and a proximal end opposite of said distal end, and further having a smooth inner surface and a threaded outer surface, wherein said proximal end is connected with said narrow end of said cone-shaped flexible sleeve.
2. The stoma coat according to claim 1 , wherein said external flange and said internal flange are made of said first biocompatible material.
3. The stoma coat according to claim 1 , wherein said first biocompatible material is selected from the group consisting of plastics and silicones.
4. The stoma coat according to claim 1 , wherein said second biocompatible material is a polyolefin.
5. The stoma coat according to claim 1 , wherein said flexible cone-shaped sleeve has an inner surface and an outer surface, wherein only said inner surface is coated with a mesh promoting in-growth of animal tissue.
6. The stoma coat according to claim 1 , wherein said external flange has a distal surface and a proximal surface, wherein only said distal surface is coated with a mesh promoting in-growth of animal tissue.
7. The stoma coat according to claim 1 , further comprising a first circular flat washer having a circular opening with a diameter matching said outside diameter of said rigid tube, wherein said first circular flat washer is a threaded washer and is screwed onto said rigid tube.
8. The stoma coat according to claim 7 , wherein said first circular flat washer has a distal surface and a proximal surface, wherein only said proximal surface is coated with a mesh promoting in-growth of animal tissue.
9. The stoma coat according to claim 7 , further comprising a second circular flat washer having a circular opening with a diameter matching said outside diameter of said rigid tube, wherein said second circular flat washer is a threaded washer and is screwed onto said rigid tube, wherein said second circular flat washer is closer to said distal end of said rigid tube than said first circular flat washer.
10. A method for making a stoma in a body wall of an animal body, wherein said method comprises implanting a stoma coat according to claim 1 in the body wall of the animal body, wherein the animal body comprises a body duct and the stoma coat cooperates with the body duct to provide a stoma.
11. The stoma coat according to claim 1 , further comprising a collecting bag, wherein said collecting bag comprises an opening with a circular threaded linking piece having an inside diameter matching said outside diameter of said rigid tube of said stoma coat, and wherein said collecting bag is removably screwed onto said distal end of said rigid tube.
12. The stoma coat according to claim 1 , further comprising a cap, wherein said cap is a threaded cap having an inside diameter matching said outside diameter of said rigid tube of said stoma coat, and wherein said cap is removably screwed onto said distal end of said rigid tube.
13. A kit comprising a stoma coat according to claim 1 wherein said stoma coat comprises a rigid tube with an outside diameter, wherein said kit further comprises a circular flat washer wherein said circular flat washer is a threaded washer having a circular opening with a diameter matching the outside diameter of the rigid tube of the stoma coat.
14. The kit according to claim 13 , further comprising a collecting bag for use with the stoma coat, wherein said collecting bag comprises an opening with a circular threaded linking piece having an inside diameter matching the outside diameter of the rigid tube of the stoma coat, and wherein said collecting bag can be screwed onto the distal end of the rigid tube, and wherein said kit further optionally comprises a cap for use with the stoma coat, wherein said cap is a threaded cap having an inside diameter matching the outside diameter of the rigid tube of the stoma coat, and wherein said cap can be screwed onto the distal end of the rigid tube.
15. The stoma coat according to claim 3 , wherein said first biocompatible material is silicone rubber.
16. The stoma coat according to claim 4 , wherein said second biocompatible material is selected from the group consisting of polypropylene, polyethylene, and copolymers thereof.
17. The stoma coat according to claim 1 , wherein said stoma coat comprises a distal part and a proximal part, and wherein the rigid tube has a cylindrical shape that forms the distal part of the stoma coat and said flexible cone-shaped sleeve forms the proximal part of said stoma coat.
18. The stoma coat according to claim 1 , wherein said internal flange and said external flange are aligned.
19. The stoma coat according to claim 1 , wherein said flexible cone-shaped sleeve has a length of about 8 to 15 cm.
20. The stoma coat according to claim 1 , wherein said rigid tube has a length of about 5 to 15 cm.
21. The stoma coat according to claim 6 , wherein said mesh is a biocompatible non-absorbable material selected from the group consisting of: polypropylene (PP) and expanded polytetrafluorethylene (e-PTFE).
22. The stoma coat according to claim 1 , wherein the internal flange is coated with a mesh promoting in-growth of animal tissue.
23. The stoma coat according to claim 1 , wherein the external flange protrudes about 2 to 5 cm from said flexible cone-shaped sleeve and/or the internal flange protrudes about 0.5 to 1.5 cm from said flexible cone-shaped sleeve.
24. The stoma coat according to claim 11 , wherein the rigid tube further comprises a filling sensor to detect when to apply the collecting bag.
25. The stoma coat according to claim 7 , wherein the first circular flat washer is made of a biocompatible, non-absorbable material selected from the group consisting of: nylon, polypropylene and prolene.
26. The stoma coat according to claim 7 , wherein the first circular flat washer protrudes about 2.5 to 3.5 cm from said rigid tube when screwed onto said rigid tube.
27. The stoma coat according to claim 9 , wherein the second circular flat washer is made of a biocompatible, non-absorbable material selected from the group consisting of: nylon, polypropylene and prolene.
28. The stoma coat according to claim 9 , wherein the second circular flat washer protrudes about 3 to 5 cm from said rigid tube when screwed onto said rigid tube.
29. The stoma coat according to claim 11 , wherein the collecting bag is made of a liquid impermeable material selected from the group consisting of: plastic, rubber and silicone.
30. The stoma coat according to claim 12 , wherein the cap is made of a liquid impermeable material selected from the group consisting of: plastic, rubber and silicone.
31. The stoma coat according to claim 12 , wherein the cap has an inner surface coated with rubber or gelatin.
32. The method according to claim 10 , wherein the body duct is the peritoneal cavity and the body wall is the abdominal wall.