Ventricular assist device

1. A ventricular assist device comprising:

an intravascular blood pump; and

a collapsible frame receiving the intravascular blood pump therein and movable between a collapsed state and an expanded state,

wherein the collapsible frame engages an interior wall of a body cavity when in the expanded state and is retrievable from the body cavity in the collapsed state,

wherein the collapsible frame includes a proximal end, a distal end, and a plurality of longitudinal struts extending from the proximal end to the distal end, the plurality of longitudinal struts expanding radially when the collapsible frame is deployed in the body cavity, and

wherein the intravascular blood pump is attached to the plurality of longitudinal struts by a plurality of legs attached to the blood pump and slidable along the plurality of longitudinal struts.

2. The ventricular assist device of claim 1 , wherein the connecting legs are pivotably mounted to the intravascular blood pump.

3. The ventricular assist device of claim 1 , wherein the connecting legs each include an eyelet attached to the longitudinal struts.

4. The ventricular assist device of claim 1 , wherein the collapsible frame allows blood to flow through.

5. The ventricular assist device of claim 1 , wherein the collapsible frame includes a proximal end and a hook formed at the proximal end, the hook being engageable by a retrieval device.

6. The ventricular assist device of claim 5 , further comprising a hub including a proximal end and a distal end.

7. The ventricular assist device of claim 6 , wherein the hook is connected to the proximal end of the hub and the intravascular blood pump is provided adjacent to the distal end of the hub.

8. The ventricular assist device of claim 1 , wherein the intravascular blood pump includes a pump frame that seals rotating components therein from blood and a plurality of legs connecting the pump frame to the collapsible frame.

9. The ventricular assist device of claim 1 , wherein upon deployment, the longitudinal struts extend at oblique angles relative to each other in locations in which the plurality of legs is slidable along the plurality of longitudinal struts.

10. The ventricular assist device of claim 1 , wherein the intravascular blood pump is attached to the plurality of longitudinal struts only by the plurality of legs slidable along the plurality of longitudinal struts.

11. A method of retrieving a ventricular assist device according to claim 1 , the method comprising:

inserting a retrieval device into a body cavity; and

collapsing the ventricular assist device within the retrieval device.

12. The method of claim 11 further comprising inserting a wire to capture the ventricular assist device.

13. The method of claim 12 wherein the wire has a snare hoop to capture a hook of the ventricular assist device.

14. The method of claim 12 further comprising pushing a distal end of the wire through a sheath of the retrieval device to capture the hook.