×

Single blade cutter for arthroscopic surgery

  • US 5,007,917 A
  • Filed: 03/08/1990
  • Issued: 04/16/1991
  • Est. Priority Date: 03/08/1990
  • Status: Expired due to Term
First Claim
Patent Images

1. A surgical instrument for cutting tissue comprising:

  • a cylindrical tube having an open distal end and a side window formed in its distal end through which tissue may enter said tube for cutting;

    a tissue cutter head rotatable within said tube relative to said open end and said window, said cutter head including;

    (i) a cylindrical base portion having a radial surface closely conforming to the inside surface of said tube;

    (ii) a sole blade located along one circumferential side of and extending distally from said base portion and bearing a first and a second cutting edge, said first cutting edge disposed on said blade for traveling in a cylindrical locus closely adjacent to the inside surface of said tube relative to said window for passing across one edge of said window during at least a portion of the rotation of said cutter head for cutting tissue protruding laterally through said window, and said second cutting edge for cutting tissue protruding axially through said distal end, said first and second cutting edges meeting in a sole point, said sole point being the most distal point of said cutter head, and(iii) a sole debris channel formed by a cavity in said cutter head and passing through said base portion for receiving tissue severed by said first and second cutting edges.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×