Clot engagement and removal system

• US 10,292,723 B2
• Filed: 09/01/2016
• Issued: 05/21/2019
• Est. Priority Date: 10/22/2010
• Status: Active Grant

• Current Assignee: Neuravi Limited (Johnson & Johnson)
• Original Assignee: Neuravi Limited (Johnson & Johnson)
• Inventors: Brady, Eamon, Gilvarry, Michael, Razavi, Mahmood K., Vale, David
• Primary Examiner(s): Dang, Phong Son H
• Application Number:
  US15/254,133
• Publication Number:
  US 20170086863A1
• Time in Patent Office: 992 Days
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 2017/22034 for gripping the obstruction or the tissue part from inside
• CPC Class Codes: A61B 2017/22039 eccentric
• CPC Class Codes: A61B 2017/22094 for crossing total occlusions, i.e. piercing
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop
• CPC Class Codes: A61B 2017/2217 single wire changing shape to a gripping configuration

Abstract

A clot retrieval apparatus 1 comprises a clot engaging device 2 and a capture basket 3. The clot engaging device 2 has a collapsed delivery configuration and an expanded deployment configuration. The clot engaging device has a proximal end and a distal end and an elongate body between the proximal end and the distal end. The capture basket 3 has a collapsed delivery configuration and an expanded deployment configuration. The capture basket 3 has a proximal mouth which is open when the capture basket 3 is in the deployment configuration. The clot engaging device 2 is axially movable relative to the capture basket for capture of a clot.

Claims

1. A device, comprising:

a shaft with a proximal end and a distal end; and

a clot engaging device having a collapsed delivery configuration and an expanded deployment configuration, wherein a proximal end of the clot engaging device is formed with the distal end of the shaft and includes;

a plurality of struts defining a plurality of cells;

a seam extending along at least a portion of a length of a distal end of the clot engaging device, wherein the seam comprises a pattern configured for gripping a clot and extends between cells of the plurality of cells; and

a distal scaffolding region including the distal end being distally tapered, wherein the distal scaffolding region includes cells are smaller than a remainder of the clot engaging device.

2. The device of claim 1, wherein the seam extends helically about a circumference of the clot engaging device.

3. The device of claim 1, wherein at least some of the plurality of cells include a cell apex.

4. The device of claim 1, wherein the seam initiates at a location distal of a proximal end of the clot engaging device.

5. The device of claim 1, wherein the seam extends through the distal end of the clot engaging device.

6. The device of claim 1, wherein the seam extends circumferentially about a portion of the clot engaging device.

7. The device of claim 1, wherein the clot engaging device is self-expandable.

8. A device, comprising:

a clot engaging device having a collapsed delivery configuration and an expanded deployment configuration, wherein the clot engaging device includes;

a plurality of struts defining a plurality of cells;

a seam extending along at least a distal portion of a length of the clot engaging device, wherein the seam comprises a pattern configured for gripping a clot and extends between cells of the plurality of cells circumferentially about at least a portion of the clot engaging device, and wherein the seam is angled with respect to a longitudinal axis of the clot engaging device; and

a distal scaffolding region including a distally tapered distal end, wherein the distal scaffolding region includes cells smaller than a remainder of the clot engaging device.

9. The device of claim 8, wherein the pattern of the seam extends helically about an entirety of the circumference of the clot engaging device.

10. The device of claim 8, wherein the seam initiates at a location distal of a proximal end of the clot engaging device.

11. The device of claim 8, wherein the seam extends along an entire length of the clot engaging device.

12. The device of claim 8, wherein the clot engaging device includes a proximal end formed with a distal end of a shaft.

13. The device of claim 12, wherein the clot engaging device is formed eccentrically to the shaft.

14. The device of claim 8, wherein a proximal end of the clot engaging device includes an open proximal mouth, wherein the proximal mouth extends in a plane angled with respect to the longitudinal axis of the clot engaging device.

15. A device, comprising:

a self-expandable clot engaging device having a collapsed delivery configuration and an expanded deployment configuration, wherein the clot engaging device includes;

a plurality of struts defining a plurality of cells, wherein at least some of the plurality of cells include a cell apex;

a seam extending along at least a distal portion of a length of the clot engaging device, wherein the seam comprises a pattern configured for gripping a clot and extends between cells of the plurality of cells circumferentially about at least a portion of the clot engaging device, and wherein the pattern of the seam is angled with respect to a longitudinal axis of the clot engaging device; and

a distal scaffolding region including that is distally tapered, wherein the distal scaffolding region comprises cells that are smaller than a remainder of the clot engaging device.

16. The device of claim 15, wherein a proximal end of the clot engaging device includes an open proximal mouth, wherein the proximal mouth extends in a plane angled with respect to the longitudinal axis of the clot engaging device.

17. The device of claim 15, wherein the seam initiates at a location distal of a proximal end of the clot engaging device.

18. The device of claim 15, wherein the clot engaging device includes a proximal end formed with a distal end of a shaft.

19. The device of claim 18, wherein the clot engaging device is formed eccentrically to the shaft.