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Expandable intravascular occlusion material removal devices and methods of use

  • US 5,501,694 A
  • Filed: 03/03/1994
  • Issued: 03/26/1996
  • Est. Priority Date: 11/13/1992
  • Status: Expired due to Term
First Claim
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1. An intravascular device for removing vascular occlusion material within a vascular lumen in a patient, the intravascular device comprising:

  • an expandable removal element having a proximal and a distal end;

    an inner drive shaft comprising a helix extending through the removal element and operatively connected to the distal end of the removal element for energizing the removal element intravascularly; and

    an outer drive shaft comprising a helix operatively coupled to the proximal end of the removal element for energizing the removal element intravascularly wherein the inner drive shaft extends coaxially through the outer drive shaft and wherein the inner drive shaft and the outer drive shaft are shiftable with respect to one another.

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