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Catheter atherotome

  • US 5,074,871 A
  • Filed: 12/07/1989
  • Issued: 12/24/1991
  • Est. Priority Date: 12/07/1989
  • Status: Expired due to Fees
First Claim
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1. A catheter atherotome for use in surgical removal of plaque from the interior wall of an artery, comprising:

  • (a) an elongate tubular outer sheath having respective proximal and distal ends;

    (b) an elongate inner member disposed within said outer sheath and having respective proximal and distal ends, said distal end of said inner member extending beyond said distal end of said outer sheath;

    (c) a cutter head including a plurality of elongate flexible members each having a proximal end interconnected with said outer sheath and a distal end interconnected with said inner member;

    (d) means for moving said inner member longitudinally with respect to said outer sheath so as to flex said elongate flexible members from a constricted configuration of said cutter head into an expanded configuration of said cutter head; and

    (e) at least one of said elongate flexible members being a blade carrier having a blade carried thereon, said blade defining a respective sharpened edge, at least a portion of said sharpened edge extending generally transversely with respect to the length of said blade carrier and facing generally toward said proximal ends of said outer sheath and said inner member.

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