Percutaneous device with multiple expandable struts

• US 20070016242A1
• Filed: 07/14/2005
• Published: 01/18/2007
• Est. Priority Date: 07/14/2005
• Status: Abandoned Application

• Current Assignee: Nesstent, Ltd.
• Original Assignee: Nesstent, Ltd.
• Inventors: Israel, Henry
• Application Number:
  US11/180,547
• Publication Number:
  US 20070016242A1
• Time in Patent Office: Days
• US Class Current: 606/198
• CPC Class Codes: A61B 17/320725 with radially expandable cutting or abrading elements A61B17/32075 takes precedence
• CPC Class Codes: A61B 2017/22001 Angioplasty, e.g. PCTA
• CPC Class Codes: A61B 2017/22042 Details of the tip of the guide wire
• CPC Class Codes: A61B 2017/22044 with a pointed tip

Abstract

A percutaneous device including a body including a plurality of deformable struts, each strut having a length and a width, the length of the strut extending along an axial length of the body and the width of the strut extending about a perimeter of the body, each strut being outwardly expandable to an expanded orientation in which the length of the strut deforms into a proximal outwardly extending portion and a distal outwardly extending portion with a middle portion extending between the proximal and distal outwardly extending portions, the proximal and distal outwardly extending portions being non-parallel to an axial axis of the body and the middle portion having a surface parallel to the axial axis of the body, wherein the deformable struts are spaced from one another along the axial length and about the perimeter of the body.

Claims

1. A percutaneous device comprising:

a body comprising a plurality of deformable struts, each strut having a length and a width, the length of the strut extending along an axial length of the body and the width of the strut extending about a perimeter of the body, each strut being outwardly expandable to an expanded orientation in which the length of the strut deforms into a proximal outwardly extending portion and a distal outwardly extending portion with a middle portion extending between the proximal and distal outwardly extending portions, the proximal and distal outwardly extending portions being non-parallel to an axial axis of the body and the middle portion having a surface parallel to the axial axis of the body, wherein the deformable struts are spaced from one another along the axial length and about the perimeter of the body.

2. The percutaneous device according to claim 1, wherein in the expanded orientation some of said deformable struts protrude outwards from the body more than some of the other deformable struts.

3. The percutaneous device according to claim 2, wherein in the expanded orientation the most distal deformable strut protrudes outwards from the body less than the next proximal deformable strut.

4. The percutaneous device according to claim 2, wherein in the expanded orientation the deformable struts protrude gradually outwards more from the body in a proximal direction axially along the body.

5. The percutaneous device according to claim 1, wherein said deformable struts are constructed of a shape memory material, wherein the struts are capable of self-expansion due to at least one of thermally or stress-induced deformations of the shape memory material.

6. The percutaneous device according to claim 1, wherein said deformable struts are balloon expandable.

7. The percutaneous device according to claim 1, wherein said body is assembled with at least one tube and arranged for relative axial motion therewith, there being a stop on at least one of said body and said at least one tube that does not permit axial motion therepast, and wherein at least one wire is connected to at least one of said body and said at least one tube, wherein axial force of said at least one wire moves at least one of said body and said at least one tube against said stop and causes said deformable struts to buckle outwards to the expanded orientation.

8. The percutaneous device according to claim 1, wherein said body comprises a guidewire.

9. The percutaneous device according to claim 8, wherein said guide wire is assembled with a balloon expanding device.

10. The percutaneous device according to claim 9, wherein said balloon expanding device is adapted to anchor the percutaneous device during opening of an occlusion.

11. The percutaneous device according to claim 9, wherein said balloon expanding device is adapted to center the percutaneous device during opening of an occlusion.

12. The percutaneous device according to claim 1, wherein an occlusion breaking element is disposed on a distal end of said percutaneous device, adapted to help break up occlusions in a body lumen.

13. The percutaneous device according to claim 1, further comprising a device adapted to restrain expansion of a portion of the expandable struts.

14. A method for deploying a percutaneous device comprising:

introducing a percutaneous device comprising expandable struts into a body lumen until a distal end of the percutaneous device meets an occlusion;

expanding the struts outwards at the distal end to open the occlusion and the body lumen; and

advancing the percutaneous device further into the body lumen and expanding another set of struts outwards to open another occlusion.

15. The method according to claim 14, wherein the distal end of the percutaneous device is anchored at the occlusion as the proximal end of the device opens the occlusion.

16. The method according to claim 14, wherein a balloon expanding device is used to anchor the percutaneous device while opening the occlusion.

17. The method according to claim 14, wherein a balloon expanding device is used to center the percutaneous device while opening the occlusion.

18. The method according to claim 14, further comprising restraining expansion of the expandable struts that are not within the occlusion.

19. The method according to claim 14, comprising gradually expanding the expandable struts to penetrate and soften the occlusion, and repeatedly expanding the expandable struts with a gentle undulating motion to open the body lumen.