Screw delivery system and method

  • US 6,287,313 B1
  • Filed: 11/23/1999
  • Issued: 09/11/2001
  • Est. Priority Date: 11/23/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A screw delivery system kit for providing a minimally invasive portal with a small entry angle to a surgical site, comprising:

  • an outer cannula having a first exterior surface and a first interior surface defining a bore, the first interior surface having a first inner diameter and the first exterior surface having a first outer diameter, the surfaces extending along a first length on a first axis between a first proximal end having a first stop and a first distal end;

    a trocar having a second exterior surface with a second outer diameter, the second exterior surface extending along a second length on a second axis between a second proximal end having a second stop and a second distal end defining a blunt tip;

    a guide having a handle and a tube, the tube having a third exterior surface and a third interior surface defining a passageway, the third interior surface having a third inner diameter and the third exterior surface having a third outer diameter, the third interior surface extending between a third proximal end and a third distal end, the third exterior surface extending along a third length on a third axis between a third stop at the third proximal end and the third distal end, the handle being connected to the tube at an angle to the third axis; and

    a bone drill bit having a fourth exterior surface with a fourth outer diameter extending along a fourth length on a fourth axis between a fourth stop located near a fourth proximal end and a plurality of drilling flutes defined on a fourth distal end.

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