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Rotationally expandable atherectomy cutter assembly

  • US 5,192,291 A
  • Filed: 01/13/1992
  • Issued: 03/09/1993
  • Est. Priority Date: 01/13/1992
  • Status: Expired due to Fees
First Claim
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1. An atherectomy cutter assembly having a longitudinal axis, said cutter assembly comprising:

  • a plurality of blade elements radially spaced about said longitudinal axis, each of said blade elements having a distal end and a proximal end;

    a hub at said distal ends of said blade elements wherein said distal ends of said blade elements are fixably connected to said hub; and

    an extension tube positioned coaxially with said blade elements, said tube having a plurality of helical slots formed therein extending in a direction of said longitudinal axis and slidably retaining each of said proximal ends of said blade elements.

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