Antimicrobial Implant with a Flexible Porous Structure

• US 20080268011A1
• Filed: 09/22/2005
• Published: 10/30/2008
• Est. Priority Date: 09/24/2004
• Status: Abandoned Application

• Current Assignee: Aesculap AG (Lonza Group AG)
• Original Assignee: Aesculap AG (Lonza Group AG)
• Inventors: Friedrich, Volker, Goldmann, Helmut, Langanke, Dennis
• Application Number:
  US11/663,595
• Publication Number:
  US 20080268011A1
• Time in Patent Office: Days
• US Class Current: 424/423
• CPC Class Codes: A61L 2300/104 Silver, e.g. silver sulfadiazine
• CPC Class Codes: A61L 2300/404 Biocides, antimicrobial agents, antiseptic agents
• CPC Class Codes: A61L 2300/624 Nanocapsules
• CPC Class Codes: A61L 27/18 obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: A61L 27/446 with other specific inorganic fillers other than those covered by A61L27/443 or A61L27/46
• CPC Class Codes: A61L 27/54 Biologically active materials, e.g. therapeutic substances A61L27/227 takes precedence
• CPC Class Codes: A61L 27/56 Porous materials, e.g. foams or sponges
• CPC Class Codes: C08L 75/04 Polyurethanes

Abstract

The invention relates to an antimicrobial implant with a flexible porous structure composed of a biocompatible synthetic material which comprises particles of at least one antimicrobial agent.

Claims

1-19. -19. (canceled)

20. An antimicrobial implant with a flexible porous web structure composed of a biocompatible synthetic material which comprises particles of at least one antimicrobial agent.

21. The implant as claimed in claim 20 wherein the implant is designed as hollow organ.

22. The implant as claimed in claim 20, wherein the implant is designed as planar implant.

23. The implant as claimed in claim 20, wherein the porous structure is a microporous structure.

24. The implant as claimed in claim 20, wherein the synthetic material is a non-absorbable synthetic material.

25. The implant as claimed in claim 20, wherein the synthetic material is a thermally plasticizable synthetic material.

26. The implant as claimed in claim 20, wherein the synthetic material is a synthetic material which can dissolve in solvents.

27. The implant as claimed in claim 20, wherein the synthetic material is a hydrophobic synthetic material.

28. The implant as claimed in claim 20, wherein the implant is designed with thin walls.

29. The implant as claimed in claim 20, wherein the implant is designed as a sprayed web.

30. The implant as claimed in claim 20, wherein the implant is designed as melt-blown web.

31. The implant as claimed in claim 20, wherein the particles of the antimicrobial agent are homogeneously dispersed in the synthetic material of single fibers of the web structures.

32. The implant as claimed in claim 20, wherein the particles of the antimicrobial agent are enriched on at least one surface of the implant.

33. The implant as claimed in claim 32, wherein fibers of the web structure located on the surface have a higher concentration of particles of the antimicrobial agent than those fibers located underneath the surface.

34. The implant as claimed in claim 20, wherein the particles of the at least one antimicrobial agent have a size of from 50 to 100 ran.

35. The implant as claimed in claim 20, wherein the particles of the at least one antimicrobial agent consist of at least one metal with antimicrobial activity.

36. The implant as claimed in claim 20, wherein the particles of the at least one antimicrobial agent are present with a content from 0.1 to 10% by weight.

37. A process for producing the implant as claimed in claim 20 wherein biocompatible synthetic material is treated with particles of at least one antimicrobial agent at the latest during the shaping of the porous structure of the implant.

38. The process as claimed in claim 37, wherein the implant composed of the synthetic material which is provided with the particles of the at least one antimicrobial agent is formed in one operation.

40. The implant as claimed in claim 22, wherein the implant is designed as patch.

41. The implant as claimed in claim 23, wherein the microporous structure has an air permeability of from 5 to 500 mUcm²/minute with a pressure difference of 1.2 kPa.

42. The implant as claimed in claim 28, wherein the walls have a wall thickness of from 0.1 to 2 mm.

43. A process for producing the implant as claimed in claim 37, wherein the biocompatible synthetic material is treated with the particles of the at least one antimicrobial agent before the shaping of the porous structure of the implant.

44. The process as claimed in claim 38, wherein the implant is formed by material application to a substrate.

39. An antimicrobial implant with a flexible porous web structure composed of a biocompatible synthetic material which comprises particles of at least one antimicrobial agent wherein the implant is designed as vascular prosthesis.