Flexible hollow organ

• US 4,850,999 A
• Filed: 05/26/1981
• Issued: 07/25/1989
• Est. Priority Date: 05/24/1980
• Status: Expired due to Term

• Current Assignee: Schneider Electric SE
• Original Assignee: Institute Fur Textil-Und Faserforschung Stuttgart
• Inventors: Planck, Heinrich
• Primary Examiner(s): Frinks, Ronald L.
• Application Number:
  US06/267,362
• Time in Patent Office: 2,982 Days
• Field of Search: 3/1, 3/1.4, 128/334 R, 128/334 C, 138/123, 138/124, 623/1, 623/11, 623/12
• US Class Current: 623/1.44
• CPC Class Codes: A61F 2/06 Blood vessels

Abstract

A flexible hollow organ, especially a vascular prosthesis intended for implantation in the human or animal body parts. The hollow organ includes a flexible prosthetic tube serving for a throughflow of a medium or which consists of such a prosthetic tube. A wall of the prosthetic tube exhibits at least one braided hose of flexible, elastic threads produced as a hollow meshwork. The hose, where provided, imparts to the prosthetic tube an increased resistance against buckling and compression.

Claims

1. A prosthesis for implantation in a human or animal body, the prosthesis comprising a flexible non-corrugated prosthetic tube means for a throughflow of a medium, and at least one flexible elastic braided hose means is arranged along at least a portion of a wall of the tube means for imparting an increased resistance against buckling and compression to the tube means thereby reducing a critical bending radius of the prosthesis, the at least one braided hose means is formed as a hollow meshwork braided in a linen weave mode with a braiding angle of the braided hose means being in a range of 60°

-160°

.

2. A prosthesis according to claim 1, wherein the braiding angle is in the range of 70°

to 110°

.

5. A prosthesis according to one of claims 1, 3 or 4, wherein the hollow meshwork is composed of metallic threads.

6. A prosthesis according to claim 5, wherein the metallic thread consists essentially of one of stainless steel or titanium.

7. A prosthesis according to claim 6, wherein the metallic threads have a diameter of between 0.04-0.15 mm.

8. A prosthesis according to claim 5, wherein the diameter of the metallic threads is between 0.05 and 0.07 mm.

9. A prosthesis according to one of claims 1, 3 or 4, wherein the hollow meshwork is composed of polymeric synthetic resin.

10. A prosthesis according to one of claims 1, 3 or 4, wherein the hollow meshwork is composed of metallic threads and synthetic resin threads.

11. A prosthesis according to claim 10, wherein the metallic threads have a diameter of between 0.04-0.15 mm.

12. A prosthesis according to claim 10, wherein the synthetic resin threads of the hose means have a diameter of between 0.05-1 mm.

13. A prosthesis according to one of claims 1, 3, or 4, wherein the braided hose means is arranged on an inner surface of the wall of the tube means.

14. A prosthesis according to one of claims 1, 3, or 4, wherein at least some of the threads of said hose means are monofilaments.

15. A prosthesis according to claim 14, wherein all of the threads of said hose means are monofilaments.

16. A prosthesis according to one of claims 1, 3 or 4, wherein the tube means includes at least one tubular mat of glued-together textile fibers.

17. A prosthesis according to one of claims 1, 3 or 4, wherein the tube means is a synthetic resin tube.

18. A prosthesis according to one of claims 1, 3 or 4, wherein the hose means extends only over a portion of an axial length of the tube means.

19. A prosthesis according to one of claims 1, 3 or 4, wherein a plurality of hose means are provided and are arranged along a tube means at an axial spacing from one another.

20. A prosthesis according to one of claims 1, 3 or 4, wherein the prosthesis is an artificial blood vessel.

21. A prosthesis according to one of claims 1, 3 or 4, wherein the prosthesis is one of an artificial esophagus or trachea.

22. A prosthesis according to one of claims 1, 3 or 4, wherein the prosthesis is one of an artificial ureter or urethra.

23. A prosthesis according to one of claims 1, 3 or 4, wherein the prosthesis is an artificial bile duct.

24. A prosthesis according to one of claims 1, 3 or 4, wherein the prosthesis is an artificial intestine.

25. A prosthesis according to one of claims 1 or 4, wherein the braided hose means is arranged in one of a plurality of tubular layers so as to substantially subdivide the same into two sublayers.

26. A prosthesis according to claim 25, wherein the hose means is braided in such a manner so as to have substantially rhomboidal perforations between threads thereof thereby enabling material of the two sublayers to be accommodated in the perforations.

27. A prosthesis according to one of claims 1, 3 or 4, wherein the tube means is formed as an elastic flexible porous member, and the flexible elastic braided hose means is embedded in the porous member.

28. A prosthesis according to one of claims 1, 3 or 4, wherein the tube means is formed as a microporous member, the flexible elastic braided hose means is arranged at least in a longitudinal center area thereof.

29. A prosthesis according to one of claims 1, 3 or 4, wherein the tube means includes at least two mutually coaxial tube layers, an outer layer of the tube layers is porous and includes textile fibers joined together by an adhesive with the fibers being oriented in at least a direction obliquely to a circumferential direction of the tube means.

30. A prosthesis according to one of claims 1 or 4, wherein the braided hose means is arranged on an other surface of the tube means.

31. A prosthesis according to one of claims 1 or 4, wherein the braided hose means is arranged inside of the wall of the tube means.

32. A prosthesis according to claim 31, wherein the braided hose means is embedded in the wall of the tube means.

33. A prosthesis according to one of claims 1 or 3, wherein the tube means includes at least two mutually coaxial tubular layers, said at least one flexible elastic braided hose means is embedded in said tube means.

34. A prosthesis according to claim 33, wherein the braided hose means is coaxially disposed with respect to the tubular layers.

35. A prosthesis according to one of claims 1 or 3, wherein the hose means is braided in such a manner so as to have substantially rhomboidal perforations between threads thereof so as to enable material of the tube means to be accommodated in the perforations.

36. A prosthesis according to one of claims 1, 3 or 4, wherein a flap valve means is arranged in a prosthetic tube for forming a cardio-vascular prosthesis.

38. A prosthesis according to one of claims 1, 3 or 4, wherein the tube means includes at least one tubular woven cloth.

39. A prosthesis according to one of claims 1, 3 or 4, wherein the tube means includes at least tubular knitted cloth.

40. A prosthesis according to one of claims 1, 3 or 4, wherein said tube means includes at least one tubular hosiery-type cloth.

3. A prosthesis for implantation in a human or animal body, the prosthesis comprising a flexible non-corrugated prosthetic tube means for a throughflow of a medium and at least one flexible elastic braided hose means arranged along at least a portion of a wall of the tube means for imparting an increased resistance against buckling and compression to the tube means thereby reducing a critical bending radius of the prosthesis, the tube means includes at least two mutually coaxial tubular layers, said at least one flexible elastic braided hose means formed as a hollow meshwork is embedded in said tube means, and the braided hose means is arranged in one of the tubular layers so as to substantially subdivide the same into two sublayers.

4. A prosthesis for implantation in a human or animal body, the prosthesis comprising a flexible non-corrugated prosthetic tube means for a throughflow of a medium, and at least one flexible elastic braided hose means formed as a hollow meshwork is arranged along at least a portion of a wall of the tube means for imparting an increased resistance against buckling and compression to the tube means thereby reducing a critical bending radius of the prosthesis, the hose means formed as a hollow meshwork is braided in such a manner so as to have substantially rhomboidal perforations between threads thereof so as to enable material of the tube means to be accommodated in the perforations.

37. A prosthesis according to claim 46, wherein the braided hose means is coaxially disposed with respect to the tubular layers.