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Screw and driver

  • US 5,498,265 A
  • Filed: 04/01/1994
  • Issued: 03/12/1996
  • Est. Priority Date: 03/05/1991
  • Status: Expired due to Term
First Claim
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1. A variable length implant comprising in a connected relationship:

  • (a) a threaded shank having;

    (1) a distal threaded shank portion having a bone thread and having a distal end and(2) a proximal threaded shank portion having a machine thread and having a proximal end,wherein said bone thread and said machine thread are of opposite hand(b) a sleeve having a head and having an inner threading which threads with said proximal threaded shank portion, so as to result in an implant having a maximum implant length and a minimum implant length; and

    (c) a connector means which connects said sleeve near said distal end of said sleeve with said proximal threaded shank portion near said proximal end of said proximal threaded shank portion but which permits said sleeve to move longitudinally with respect to said distal threaded shank portion after said maximum implant length is reached.

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  • 5 Assignments
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