Clot retrieval device for removing clot from a blood vessel

• US 10,034,680 B2
• Filed: 12/31/2015
• Issued: 07/31/2018
• Est. Priority Date: 03/09/2011
• 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, Griffin, Patrick, Casey, Brendan, McNamara, Jason
• Primary Examiner(s): NGUYEN, TUAN VAN
• Application Number:
  US14/986,357
• Publication Number:
  US 20160192955A1
• Time in Patent Office: 943 Days
• Field of Search: 606113, 606114, 606127, 606200
• CPC Class Codes: A61B 17/22031 Gripping instruments, e.g. forceps, for removing or smashing calculi A61B17/221 takes precedence
• 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 17/320725 with radially expandable cutting or abrading elements A61B17/32075 takes precedence
• CPC Class Codes: A61B 2017/00292 mounted on or guided by flexible, e.g. catheter-like, means
• CPC Class Codes: A61B 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/22034 for gripping the obstruction or the tissue part from inside
• 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 2017/2215 having an open distal end
• CPC Class Codes: A61F 2/011 Instruments for their placement or removal
• CPC Class Codes: A61F 2/013 Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting
• CPC Class Codes: A61F 2002/016 made from wire-like elements
• CPC Class Codes: A61F 2002/018 made from tubes or sheets of material, e.g. by etching or laser-cutting
• CPC Class Codes: A61F 2230/0069 cylindrical
• CPC Class Codes: A61F 2230/008 paraboloidal
• CPC Class Codes: A61F 2230/0091 helically-coiled or spirally-coiled, i.e. having a 2-D spiral cross-section
• CPC Class Codes: A61F 2230/0093 Umbrella-shaped, e.g. mushroom-shaped

Abstract

A clot retrieval device (9501) for removing clot from a blood vessel comprises an inner elongate body (9503) and an outer elongate body (9504) at least partially overlying the inner elongate body (9503). The device also comprises an elongate member or shaft (9502) having a proximal end which extends exterior of a patient so that a user can retrieve the stent-basket device and captured clot by retracting the shaft (9502). The outer elongate body (9504) and the inner elongate body (9503) are connected to the distal end of the shaft (9502) and are expandable relative to the shaft (9502) from a collapsed delivery configuration to an expanded deployed configuration. The outer elongate body (9504) is expandable relative to the inner elongate body (9503) to a radial extent which is greater than the radial extent of the inner body (9503) in the deployed configuration.

Claims

1. A device for removing clot from a blood vessel, the device having a collapsed delivery configuration and an expanded deployed configuration and comprising:

a shaft;

an expandable body coupled to the shaft and radially expandable to the deployed configuration, and having

an inner expandable body fixedly coupled to a distal region of the shaft, and

an outer expandable body fixedly coupled to the distal region of the shaft and having an open distal end, and

a capture net coupled to the inner expandable body and including a proximal mouth;

wherein a proximal most end of the inner expandable body is coextensive with a proximal most end of the outer expandable body.

2. The device of claim 1, wherein the capture net is self-expandable.

3. The device of claim 1, wherein a distal end of the inner expandable body and a distal end of the outer expandable body are uncoupled from one another.

4. The device of claim 1, wherein the inner expandable body is cylindrical and tubular.

5. The device of claim 1, wherein the capture net is coupled to a distal most end of the inner expandable body via a plurality of connecting arms and is located distal the outer expandable body in the deployed configuration.

6. The device of claim 1, wherein the outer expandable body includes a closed-cell strut structure having a first porosity, and the capture net has a second porosity less than the first porosity.

7. A device for removing clot from a blood vessel, the device having a collapsed delivery configuration and an expanded deployed configuration and comprising:

a shaft;

an expandable body coupled to the shaft and radially expandable to the deployed configuration, and having

an inner expandable body fixedly coupled to a distal region of the shaft, and

an outer expandable body fixedly coupled to the distal region of the shaft and having an open distal end, and

a capture net coupled to the inner expandable body and including a proximal mouth;

wherein the outer expandable body at least partially overlies the inner expandable body and is expandable to a radial extent which is greater than the radial extent of the inner expandable body in the deployed configuration to provide a clot reception space radially between the inner expandable body and the outer expandable body.

8. The device of claim 7, wherein the capture net is self-expandable.

9. The device of claim 7, wherein a distal end of the inner expandable body and a distal end of the outer expandable body are uncoupled from one another.

10. The device of claim 7, wherein the inner expandable body is cylindrical and tubular.

11. The device of claim 7, wherein the capture net is coupled to a distal most end of the inner expandable body via a plurality of connecting arms and is located distal the outer expandable body in the deployed configuration.

12. The device of claim 7, wherein, as the outer expandable body radially expands, a length of the outer expandable body shortens.

13. The device of claim 7, wherein the outer expandable body includes a closed-cell strut structure having a first porosity, and the capture net has a second porosity less than the first porosity.

14. A device for removing clot from a blood vessel, the device having a collapsed delivery configuration and an expanded deployed configuration and comprising:

a shaft;

an expandable body coupled to the shaft and radially expandable to the deployed configuration, and having

an inner expandable body fixedly coupled to a distal region of the shaft, and

an outer expandable body fixedly coupled to the distal region of the shaft and having an open distal end, and

a capture net coupled to the inner expandable body and including a proximal mouth;

wherein the inner expandable body is tubular and devoid of structure therein.

15. The device of claim 14, wherein the capture net is self-expandable.

16. The device of claim 14, wherein a distal end of the inner expandable body and a distal end of the outer expandable body are uncoupled from one another.

17. The device of claim 14, wherein the inner expandable body is cylindrical and tubular.

18. The device of claim 14, wherein the capture net is coupled to a distal most end of the inner expandable body via a plurality of connecting arms and is located distal the outer expandable body in the deployed configuration.

19. The device of claim 14, wherein the outer expandable body includes a closed-cell strut structure having a first porosity, and the capture net has a second porosity less than the first porosity.