Endovascular implant

Patent metadata

Field	Value
Publication number	US-9375327-B2
Application number	US-201113153257-A
Country	US
Kind code	B2
Filing date	Jun 3, 2011
Priority date	Dec 12, 2007
Publication date	Jun 28, 2016
Grant date	Jun 28, 2016

Abstract

A plaque tack can be used for holding plaque against blood vessel walls such as in treating atherosclerotic occlusive disease. The plaque tack can be formed as a thin, annular band for holding loose plaque under a spring or other expansion force against a blood vessel wall. Focal elevating elements and/or other features, such as anchors, can be used to exert a holding force on a plaque position while minimizing the amount of material surface area in contact with the plaque or blood vessel wall and reducing the potential of friction with the endoluminal surface. This approach offers clinicians the ability to perform a minimally invasive post-angioplasty treatment and produce a stent-like result without using a stent.

First claim

What is claimed is:

1. An intravascular implant having a tubular body defining a longitudinal axis and comprising a plurality of struts and open areas in between struts, the struts forming at least two circumferential rings spaced apart along the longitudinal axis and bridge members connecting the circumferential rings, the bridge members not being connected to one another, wherein the open area between the at least two circumferential rings and bridge members connecting the circumferential rings is open area bounded by struts, the struts defining a radially outwardly facing surface; and
wherein at least one of the bridge members includes a first V bend, a second V bend, and an eyelet, the first and second V bends positioned on opposite sides of the eyelet; and
wherein when expanded the sum of the radially outwardly facing surface of the struts is no more than about 12% of the sum of all of the open area bounded by struts.

2. The intravascular implant of claim 1 , wherein the at least two circumferential rings comprise only two circumferential rings that define the distal-most and proximal-most ends of the implant.

3. The intravascular implant of claim 1 , wherein the implant is made of a metal, a polymer, or a composite.

4. The intravascular implant of claim 1 , wherein the implant is bioresorbable.

5. The intravascular implant of claim 4 , wherein the implant is made of polyglycolic acid.

6. An endoluminal implant, comprising:
a first circumferential ring forming a proximal-most end or a distal-most end of the endoluminal implant, the first circumferential ring having a repeating pattern of a first outward apex disposed between first and second struts, a second outward apex disposed between third and fourth struts, a first inward apex disposed between the second and third struts, and a second inward apex disposed adjacent to the fourth strut;
a second circumferential ring disposed adjacent to the first circumferential ring; and
a plurality of bridge members, each bridge member having a first end coupled with the second inward apex and a second end coupled with the second circumferential ring, the bridge member having a barb disposed thereon, at least one of the plurality of bridge members including a first anchor and a second anchor positioned on opposite sides of a midline of the endoluminal implant, the at least one bridge member further including a position marker positioned on the midline of the endoluminal implant;
wherein the implant has a compressed state for delivery and an expanded state, the implant being configured such that in the expanded state, a first angle defined at the first outward apex between the first and second struts is different from a second angle defined at the second outward apex between the third and fourth struts.

7. The implant of claim 6 , wherein the second circumferential ring has a plurality of outward apices and a plurality of inward apices, each of the inward apices being connected with the second end of one of the bridge members of the plurality of bridge members.

8. The implant of claim 6 , wherein the first inward apex of the first circumferential ring and one of the inward apices of the second circumferential ring are axially adjacent to each other and unconnected.

9. The implant of claim 6 , wherein a first axial distance from a plane bisecting the bridge member to the first outward apex of the first circumferential ring is greater than a second axial distance from the bisecting plane to the second outward apex of the first circumferential ring.

10. The implant of claim 6 , wherein the first angle is between 43 and 53 degrees and the second angle is about 31 and 41 degrees.

11. The implant of claim 10 , wherein the first angle is about 48 degrees and the second angle is about 36 degrees.

12. The implant of claim 6 , wherein the implant is made of a metal, a polymer, or a composite.

13. The implant of claim 6 , wherein the implant is bioresorbable.

14. The implant of claim 13 , wherein the implant is made of polyglycolic acid.

15. An endoluminal implant, comprising:
a first circumferential member having a pattern that repeats circumferentially to form a ring, the ring defining a distal-most end of the endoluminal implant, the pattern comprising:
a first outward apex disposed between first and second struts,
a second outward apex disposed between third and fourth struts,
a first inward apex disposed between the second and third struts, and
a second inward apex disposed adjacent to the fourth strut;

a second circumferential member disposed adjacent to the first circumferential member; and
a plurality of bridge members, each having a first end coupled with the second inward apex and a second end coupled with the second circumferential member, each bridge member having a barb disposed at or adjacent a central zone of the bridge member and being unconnected to the other bridge members, at least one of the bridge members further including a first V bend, a second V bend, and a position marker, the position marker disposed at the central zone of the at least one bridge member;
wherein in the pattern, the first outward apex is positioned a first axial distance from the central zone of the bridge member and the second outward apex is positioned a second axial distance from the central zone of the bridge member, the first distance being greater than the second distance.

16. The endoluminal implant of claim 15 , wherein the struts disposed adjacent the first outward apex taper in a first generally axial direction and the struts disposed adjacent the second outward apex taper in a second direction generally opposite the first axial direction.

17. The endoluminal implant of claim 15 , wherein the struts disposed adjacent the first outward apex taper from a smaller transverse thickness adjacent the bridge member to a larger transverse thickness adjacent the first outward apex.

18. The endoluminal implant of claim 15 , wherein the struts disposed adjacent the second outward apex taper from a smaller transverse thickness adjacent the second outward apex to a lager larger transverse thickness adjacent the bridge member.

19. An endoluminal implant, comprising:
a proximal circumferential ring disposed at a proximal end of the endoluminal implant, the proximal circumferential ring having a repeating sinusoidal pattern comprising:
a first plurality of proximal apices at a first amplitude of the proximal circumferential ring;
a second plurality of proximal apices at a second amplitude of the proximal circumferential ring greater than the first amplitude of the proximal circumferential ring;
a first plurality of distal apices; and
a second plurality of distal apices;

a distal circumferential ring disposed at a distal end of the endoluminal implant, the distal circumferential ring having a repeating sinusoidal pattern comprising:
a first plurality of distal apices at a first amplitude of the distal circumferential ring;
a second plurality of distal apices having a second amplitude of the distal circumferential ring greater than the first amplitude of the distal circumferential ring;
a first plurality of proximal apices; and
a second plurality of proximal apices;

a plurality of bridge members, each bridge member connecting one apex of the first plurality of distal apices of the proximal circumferential ring to one apex of the first plurality of proximal apices of the distal circumferential ring, at least one of the bridge members including a first V bend and a second V bend positioned on opposit

Assignees

• Giasolli Robert
• Schneider Peter
• Intact Vascular Inc

Inventors

• Giasolli Robert
• Schneider Peter

Classifications

• A61F2/915

  with bands having a meander structure, adjacent bands being connected to each other · CPC title

• A61F2002/91583

  by a bridge, whereby at least one of its ends is connected along the length of a strut between two consecutive apices within a band · CPC title

• A61F2002/91575

  connected peak to trough · CPC title

• A61F2002/8486

  provided on at least one of the ends · CPC title

• A61F2002/91508

  the meander having a difference in amplitude along the band · CPC title