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Catheter for removal of clots in blood vessels

  • US 5,772,674 A
  • Filed: 03/31/1997
  • Issued: 06/30/1998
  • Est. Priority Date: 03/31/1997
  • Status: Expired due to Fees
First Claim
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1. A method of removing a thrombus from a blood vessel, the method comprising the steps of:

  • a) advancing a two-part catheter to a position proximal to the thrombus, the two-part catheter including a delivery catheter and a receiving catheter, both the delivery catheter and the receiving catheters having distal ends, both the delivery catheter and the receiving catheter having balloons at their distal ends, the delivery catheter and receiving catheter being separable from each other, the balloon of the receiving catheter being permanently positioned at the distal end of the receiving catheter so that the balloon of the receiving catheter does not move longitudinally relative to the receiving catheter,b) advancing the delivery catheter to a position distal to the thrombus,c) inflating the balloons such that both balloons occupy substantially an entire cross-sectional area of the vessel,d) withdrawing the delivery catheter so as to pull the thrombus into the inflated balloon of the receiving catheter, wherein the thrombus is substantially encapsulated between the balloons of the delivery catheter and the receiving catheter,e) at least partially deflating the balloons, andf) removing the delivery catheter and the receiving catheter, with both balloons, from the vessel, the removing step being performed without inserting the delivery catheter and the receiving catheter into any other catheter.

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