Method of treating vascular bifurcations

• US 10,500,072 B2
• Filed: 06/30/2017
• Issued: 12/10/2019
• Est. Priority Date: 11/24/2010
• Status: Active Grant

• Current Assignee: Poseidon Medical Inc.
• Original Assignee: Poseidon Medical Inc.
• Inventors: Davis, H. Richard, Kaplan, Aaron
• Primary Examiner(s): Shi, Katherine M
• Assistant Examiner(s): Mendoza, Michael G
• Application Number:
  US15/640,208
• Publication Number:
  US 20170360583A1
• Time in Patent Office: 893 Days
• CPC Class Codes: A61F 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2002/821 Ostial stents
• 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 2002/91575 connected peak to trough
• 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 2230/0013 Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped

Abstract

A prosthesis is disclosed for placement across an ostium opening from a main body lumen to a branch body lumen. The prosthesis comprises a radially expansible support, at least two axially elongate longitudinal members, at least one of which can be fronds, extending from an end of the support, and a circumferential member connected to at least one axially elongate longitudinal member and unconnected to at least one other axially elongate longitudinal member.

Claims

1. A method of treating a bifurcation between a first body lumen and a second body lumen, comprising:

advancing a prosthesis to the bifurcation, the prosthesis comprising a radially expansible support, a transition portion having a first end coupled with the support, a circumferential member spaced axially from the radially expansible support, wherein the transition portion comprises a plurality of second ends, at least one of the second ends coupled with the circumferential member via a single filament, and one or more of the second ends not coupled with the circumferential member;

deploying the support in the first body lumen;

positioning the first end of the transition portion on a first body lumen side of an ostium opening; and

deploying the circumferential member in the second body lumen at a distance from the bifurcation, wherein the one or more of the second ends not coupled with the circumferential member is positioned on a second body lumen side of the ostium opening.

2. The method of claim 1, wherein the one or more of the second ends not coupled with the circumferential member is positioned at a proximal second body lumen location.

3. The method of claim 1, wherein the one or more of the second ends not coupled with the circumferential member is positioned at a distal second body lumen location.

4. The method of claim 1, wherein the one or more of the second ends not coupled with the circumferential member is positioned at a proximal second body lumen location and at a distal second body lumen location.

5. The method of claim 1, wherein deploying the circumferential member in the second body lumen comprises engaging the circumferential member with a second body vessel wall.

6. The method of claim 5, further comprising expanding the support and the transition portion.

7. The method of claim 1, further comprising transferring force applied to the support or the transition portion to the circumferential member via the single filament.

8. The method of claim 1, further comprising deploying a second device in the second body lumen.

9. The method of claim 8, wherein deploying the second device comprises deploying the second device within the circumferential member.

10. The method of claim 9, further comprising advancing the second device in the second body lumen and pushing the one or more of the second ends not coupled to the circumferential member to a distal second body lumen location.

11. The method of claim 10, further comprising expanding the second device.

12. The method of claim 11, wherein expanding the second device comprises entrapping the circumferential member between the second device and a second body vessel wall.

13. The method of claim 11, wherein expanding the second device comprises entrapping the one or more of the second ends not coupled with the circumferential member between the second device and a second body vessel wall.

14. The method of claim 1, wherein at least a portion of the prosthesis decreases in mass over time.

15. The method of claim 14, wherein the circumferential member is bioabsorbable.

16. The method of claim 14, wherein the circumferential member is bioerodable.

17. The method of claim 14, wherein the circumferential member is biodegradable.

18. The method of claim 14, wherein a polymer matrix on a surface of the prosthesis decreases in mass over time.

19. The method of claim 14, wherein any one or combination of the support and the transition portion decreases in mass over time.

20. The method of claim 14, wherein a proximal or distal portion of the prosthesis including the circumferential member decreases in mass over time.

21. A method of treating a bifurcation between a first body lumen and a second body lumen, comprising:

providing a prosthesis comprising a radially expansible support, a transition portion having a first end coupled with the support, a circumferential member spaced axially from the radially expansible support, wherein the transition portion comprises a plurality of second ends, at least one of the second ends coupled with the circumferential member via a single filament, and one or more of the second ends not coupled with the circumferential member;

transluminally navigating the prosthesis to a treatment site;

deploying the support in the first body lumen;

positioning the first end of the transition portion on a first body lumen side of an ostium opening;

deploying the circumferential member in the second body lumen at a distance from the bifurcation; and

positioning the one or more of the second ends not coupled with the circumferential member on a second body lumen side of the ostium opening.