Clot retrieval device for removing clot from a blood vessel
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.
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.