Protective Coatings for Medical Devices

• US 20090124969A1
• Filed: 01/14/2009
• Published: 05/14/2009
• Est. Priority Date: 01/04/2000
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Lenz, Jason T.
• Granted Patent: US 8,251,962 B2
• Time in Patent Office: Days
• US Class Current: 604/103.80
• CPC Class Codes: A61L 29/085 Macromolecular materials
• CPC Class Codes: A61M 2025/1086 having a special balloon surface topography, e.g. pores, protuberances, spikes or grooves
• CPC Class Codes: A61M 2025/1088 having special surface characteristics depending on material properties or added substances, e.g. for reducing friction
• CPC Class Codes: A61M 25/1027 Making of balloon catheters

Abstract

This invention relates to a method of providing a coating on a medical device, especially a dilatation balloon, which improves the durability of the balloon.

Claims

1-20. -20. (canceled)

21. A medical device insertable in the body, the medical device having a protective coating on a surface thereof, said coating being applied to said medical device in a discontinuous pattern, the coating comprising a shape memory polymer.

22. The medical device of claim 21 wherein said discontinuous pattern is substantially uniform.

23. The medical device of claim 21 wherein said shape memory polymer is a thermoplastic polyurethane.

24. The medical device of claim 21 wherein the first polymer layer is exposed by the substantially uniform discontinuous pattern of the protective coating.

25. The medical device of claim 21 wherein said medical device is a catheter.

26. The medical device of claim 21 wherein said device is a dilatation balloon.

27. The dilatation balloon of claim 26 wherein said balloon is formed from a polymer selected from the group consisting of polyethylene terephthalate, high density polyethylene, polyamides, polyether block amides, polycarbonates, stiff polyurethanes, and mixtures thereof.

28. The dilatation balloon of claim 26 wherein said balloon is formed from a noncompliant material.

29. The dilatation balloon of claim 26 wherein said noncontinuous coating is selected from the group consisting of a waffle pattern, a stripe pattern and a pattern having circular perforations.

30. The dilatation balloon of claim 26, said balloon comprising a body portion, cone portions and waist portions, the coating is on at least the body portion of said balloon.

31. A medical device insertable in the body, the medical device having a protective coating on a surface thereof, said coating being applied to said medical device in a discontinuous pattern, the coating comprising a thermoplastic elastomer.

32. The medical device of claim 31 wherein said discontinuous pattern is substantially uniform.

33. The medical device of claim 31 wherein said thermoplastic elastomer is a block copolymer.

34. The medical device of claim 31 wherein said thermoplastic elastomer is a member selected from the group consisting of polyether-polyester block copolymers, polyether block amide copolymers, polyurethane siloxane block copolymers, polyurethanes, acrylonitrile-butadiene-styrene copolymers, styrene-butadiene-styrene block copolymers, styrene-ethylene/butylene-styrene block copolymers, styrene-ethylene/propylene-styrene block copolymers, styrene-isoprene-styrene block copolymers, polyester elastomers and mixtures thereof.

35. The medical device of claim 31 wherein the first polymer layer is exposed by the discontinuous pattern of the protective coating.

36. The medical device of claim 31 wherein said device is a catheter.

37. The medical device of claim 31 wherein said device is a dilatation balloon.

38. The dilatation balloon of claim 37 wherein said balloon is formed from a polymer selected from the group consisting of polyethylene terephthalate, high density polyethylene, polyamides, polyether block amides, polycarbonates, stiff polyurethanes, and mixtures thereof.

39. The dilatation balloon of claim 37 wherein said balloon is formed from a noncompliant material.

40. The dilatation balloon of claim 31 wherein said noncontinuous coating is selected from the group consisting of a waffle pattern, a stripe pattern and a pattern having circular perforations.