KIT FOR TREATING VASCULAR BIFURCATIONS

• US 20070213804A1
• Filed: 05/04/2007
• Published: 09/13/2007
• Est. Priority Date: 04/14/2003
• Status: Active Grant

• Current Assignee: Poseidon Medical Inc.
• Original Assignee: Tryton Medical, Inc.
• Inventors: Kaplan, Aaron, Davis, H.
• Granted Patent: US 7,972,372 B2
• Time in Patent Office: Days
• US Class Current: 623/1.110
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2/954 for placing stents or stent-grafts in a bifurcation
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2002/821 Ostial stents
• CPC Class Codes: A61F 2002/91508 the meander having a difference in amplitude along the band
• CPC Class Codes: A61F 2002/91516 the meander having a change in frequency along the band
• CPC Class Codes: A61F 2002/91525 within the whole structure different bands showing different meander characteristics, e.g. frequency or amplitude
• CPC Class Codes: A61F 2002/91533 characterised by the phase between adjacent bands
• CPC Class Codes: A61F 2002/9155 Adjacent bands being connected to each other
• CPC Class Codes: A61F 2002/91558 connected peak to peak
• CPC Class Codes: A61F 2002/91575 connected peak to trough
• CPC Class Codes: A61F 2002/9583 Means for holding the stent on the balloon, e.g. using protrusions, adhesives or an outer sleeve
• CPC Class Codes: A61F 2220/0008 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2220/0033 made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2250/0039 differing in diameter
• CPC Class Codes: A61M 25/1002 characterised by balloon shape A61M25/1006, A61M25/1009 take precedence

Abstract

A stepped balloon catheter prosthesis deployment system is disclosed for placement of a prosthesis across an Os opening from a main body lumen to a branch body lumen. The prosthesis comprises a radially expansible support at one end, a circumferentially extending link at the other end and at least one frond extending axially therebetween. The prosthesis is configured to be deployed from a stepped diameter balloon with the support in the branch body lumen, with the circumferentially extending link in the main lumen and the frond extendable across the Os.

Claims

1. A kit for stenting a bifurcation in a vessel, comprising:

a branch vessel stent, having a proximal end, a distal end, and at least one frond extending from either the proximal or distal end; and

a main vessel stent, for entrapping the frond against a vessel wall.

2. A kit as in claim 1, additionally comprising a first balloon catheter for deploying the branch vessel stent.

3. A kit as in claim 2, additionally comprising a second balloon catheter for deploying the main vessel stent.

4. A kit as in claim 1, wherein the at least one frond includes at least three fronds.

5. A kit as in claim 1, wherein the at least one frond comprises a helical configuration.

6. A kit as in claim 5, comprising a plurality of helical fronds.

7. A kit as in claim 1, wherein at least a portion of the at least one frond comprises a lubricous coating.

8. A kit as in claim 1, comprising an endothelial cell ingrowth surface.

9. A kit as in claim 1, comprising a non thrombogenic surface.

10. A kit as in claim 1, further comprising a circumferential link that connects each of the fronds.

11. A kit as in claim 10, wherein at least a portion of the branch vessel stent comprises a drug coating, and at least a portion of the fronds and the circumferential link are without a drug coating.

12. A kit as in claim 11, wherein the drug coating is configured to produce at least one of a controlled drug release rate, a constant drug release rate, bi-modal drug release rate or a controlled concentration of drug proximate a target vessel wall.

13. A kit as in claim 11, wherein the drug is one of an anti-cell prolifertive, anti cell migration, anti-neo plastic, anti inflammatory drug.

14. A kit as in claim 11, wherein the drug is configured to reduce an incidence or amount of restensosis.

15. A kit as in claim 11, wherein the drug coating includes a first coating and a second coating.

16. A kit as in claim 15, wherein the first coating is configured to produce a first drug release rate and the second coating is configured to produce a second drug release rate.

17. A kit as in claim 10, wherein the circumferential link is expandable from a first, reduced diameter to a second, enlarged diameter.

18. A kit as in claim 10, wherein the support is on a first end of at least one of the fronds, and the circumferential link is on a second end of at least one of the fronds.

19. A kit as in claim 10, wherein the circumferential link is radiopaque.

20. A kit as in claim 10, wherein the circumferential link has a greater radiopacity than the frond.

21. A kit as in claim 2, wherein the distal end of the branch vessel stent is carried by a first portion of the first balloon balloon that is inflatable to a first diameter and at least a portion of the at least one frond is carried by a second portion of the first balloon that is inflatable to a second diameter that is larger than the first diameter.

22. The kit as in claim 2, wherein the first balloon catheter comprises a single, stepped balloon having a proximal section with a larger inflated diameter than an inflated diameter of a distal section.

23. The kit as in claim 2, wherein the first balloon has an inflated profile with a first section having a first diameter, a second section having a second diameter, and a balloon transition in between the first and second sections, the branch vessel stent being carried by the first balloon, and wherein the branch vessel stent has a wall having a first wall pattern adjacent the first section of the balloon, and a second wall pattern adjacent the balloon transition.

24. The kit as in claim 23, wherein the branch vessel stent has a third wall pattern adjacent the second section of the balloon.