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Expandable atherectomy catheter device

  • US 5,030,201 A
  • Filed: 11/24/1989
  • Issued: 07/09/1991
  • Est. Priority Date: 11/24/1989
  • Status: Expired due to Term
First Claim
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1. An expandable atherectomy device for removing atheroma or blood clots from a blood vessel, comprising in combination:

  • a. a first catheter having a distal end to be inserted into a blood vessel and having an opposing proximal end, said first catheter extending along a central longitudinal axis, said first catheter being flexible for allowing said atherectomy device to be guided through a blood vessel, said first catheter having a central lumen of a predetermined internal diameter extending from the proximal end thereof to the distal end thereof;

    b. at least one elongated cutting member supported by the distal and of said first catheter and extending generally parallel to the longitudinal axis of said first catheter;

    c. expansion means coupled to said at least one cutting member and extending through the central lumen of said first catheter for selectively expanding said at least one elongated cutting member away from the longitudinal axis of said first catheter;

    d. a motor coupled to the proximal end of said first catheter for rotating said first catheter and said at least one cutting member to remove atheromatous material or a blood clot from a blood vessel; and

    e. one of said first catheter and said expansion means including means for permitting fluids to be passed within said first catheter between the proximal end of said first catheter and the distal end thereof.

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