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Distal atherectomy catheter

  • US 5,728,129 A
  • Filed: 06/07/1995
  • Issued: 03/17/1998
  • Est. Priority Date: 02/17/1989
  • Status: Expired due to Fees
First Claim
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1. An atherectomy catheter for removal of occlusive material in a blood vessel, tract, or cavity comprising:

  • (a) a catheter tube;

    (b) a cutter head assembly attached to the distal end of said catheter tube;

    (c) a slidably adjustable sheath extending about and enclosing said catheter tube and said cutter head assembly;

    (d) a flexible, hollow drive shaft extending through said catheter tube;

    (e) a rotary cutter mounted within said cutter head assembly and connected to said flexible drive means;

    (f) power means connected to the end of said catheter tube for rotating said cutter within said cutter head assembly for excising material blocking the blood vessel;

    (g) an idler sleeve journaled about said drive shaft adjacent said rotary cutter; and

    (h) means connected to said catheter tube for evacuating the excised material from the blood vessel through said cutter head assembly and said catheter tube.

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