Nova Patents
USRE33348E

Bone screw

Claim Score by NHIP

Read claim 1, the broadest

Abstract

This record has no abstract on file.

Term

Term ended

Expired 10 June 2008, 18.3 years ago.

  1. Priority
  2. Filed
  3. Granted
  4. Expired
  5. Today

7 claims: 1 independent, 6 dependent

  1. 1.
    1. A bone screw for connecting portions of bone across a fracture therebetween, comprising:PA1 (a) a shaft comprising a leading end portion including a first set of uniformly pitched screw threads and an elongated, smooth unthreaded portion including a central portion and a trailing end portion;PA1 (b) a sleeve member having a smooth inner cylindrical surface surrounding the elongated unthreaded portion and being freely slidable thereabout.Iadd., the bone screw not having any resilient means between the sleeve member and the unthreaded portion.Iaddend., the sleeve member including a second set of uniformly pitched screw threads thereon, the sleeve member adapted to be positioned substantially about the trailing end portion spaced apart from the first set of threads by the central portion;PA1 (c) a retaining means to prevent the sleeve member from sliding off the shaft;and PA1 (d) a driving means on the trailing end portion to accommodate a tool for driving the screw.