Selective coating of a balloon catheter with lubricious material for stent deployment

• US 6,458,138 B1
• Filed: 10/04/2001
• Issued: 10/01/2002
• Est. Priority Date: 03/24/1995
• Status: Expired due to Fees

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Sydney, Gregory T., Seiber, Russ, Belovi, Annette, Madenjian, Arthur R.
• Primary Examiner(s): BOCKELMAN, MARK
• Application Number:
  US09/971,435
• Publication Number:
  US 20020022849A1
• Time in Patent Office: 362 Days
• Field of Search: 604/265, 604/96.01, 606/192-194, 606/108, 623/1.1, 623/1.11, 623/1.12
• US Class Current: 606/108
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2002/9583 Means for holding the stent on the balloon, e.g. using protrusions, adhesives or an outer sleeve

Abstract

A predetermined arrangement of differentially lubricious areas on a balloon catheter for controlling against unexpected movement of a stent carried thereon when in situ in the body.

Claims

1. A balloon catheter having a shaft and a balloon associated therewith, the balloon having a proximal end portion, a distal end portion and a central portion, wherein the balloon has a collapsed state in which a surface portion of the central portion is exposed and an expanded state, the balloon catheter further comprising a first lubricious coating on a portion of the shaft and a second coating on at least a portion of the exposed surface of the balloon when the balloon is in its collapsed state, wherein the second coating comprises an adhesive and wherein both ends of the balloon are coated with the first lubricious coating.

2. The catheter according to the claim 1, wherein at least a portion of the balloon is uncoated, as defined by the balloon material forming the outer surface thereof.

3. The catheter according to claim 1 wherein the central portion of the balloon is substantially coated with the second coating.

4. The catheter according to claim 1, wherein the entire balloon is coated with the first lubricious coating and at least a portion of the central portion is further coated with the second coating.

5. The catheter according to claim 1, wherein the first lubricious coating comprises a polyethylene oxide composition.

6. The catheter according to claim 1, wherein the first coating further comprises silicone.

7. The catheter according to claim 1, wherein the second coating is only on the central portion of the balloon.

8. The catheter according to claim 1, wherein the first lubricious coating comprises a hydrophilic coating.

9. The catheter according to claim 1, further comprising a stent positioning on the balloon and the adhesive.

10. The catheter according to claim 1, further comprising a distal tip portion, wherein the distal tip is similarly coated as the shaft.

11. The catheter according to claim 1, wherein the entire balloon body is coated with the second coating.

12. The catheter according to claim 1, wherein only the central portion of the balloon body is coated with the second coating.

13. The catheter according to claim 1, wherein the second coating has a higher coefficient of friction than the first lubricious coating.

14. The catheter according to claim 13, wherein the second coating has a static coefficient of friction of about 0.2-0.4.

15. The catheter according to claim 1, wherein the second coating comprises a water-based dispersion based on high-molecular,weight ethylene interpolymers.

16. The catheter according to claim 1, wherein the second coating comprises an aqueous dispersion of ethylene vinyl acetate.

17. The catheter according to claim 1, wherein the entire central portion of the balloon is coated with the second coating, wherein the second coating has a static coefficient of friction of about 0.2-0.4.

18. The catheter according to claim 1, wherein the adhesive is an elastomeric based adhesive or a pressure sensitive-type adhesive.

19. The catheter according to claim 1, wherein the adhesive is chosen from the group consisting of polyisobutylene, polyamides and polyacrylate.

20. The catheter according to claim 1, wherein the adhesive is tacky.