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Methods and low profile apparatus for reducing embolization during treatment of carotid artery disease

  • US 6,540,712 B1
  • Filed: 03/20/2000
  • Issued: 04/01/2003
  • Est. Priority Date: 03/13/1998
  • Status: Expired due to Term
First Claim
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1. Apparatus for removing emboli during an angioplasty or stenting procedure the apparatus comprising:

  • a catheter having proximal and distal ends, an aspiration lumen and a guide wire lumen, each of the aspiration lumen and guide wire lumen extending from the proximal end to the distal end, and a blood outlet port in communication with the aspiration lumen, the catheter adapted to be disposed in a patient'"'"'s carotid artery;

    an occlusion element disposed on the distal end of the catheter and having an opening that communicates with the aspiration lumen, the occlusion element having a contracted state suitable for transluminal insertion and an expanded state wherein the occlusion element occludes antegrade flow in the artery;

    a venous return catheter having proximal and distal ends, a lumen extending therethrough, and a blood inlet port in communication with the lumen;

    tubing that couples the blood outlet port to the blood inlet port;

    a flow control valve coupled between the blood outlet port and blood inlet port; and

    a wire having a distal end and a balloon disposed on the distal end, wherein the wire and balloon are sized to pass through the guide wire lumen of the catheter.

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