Patent ID: 7351244
Filing Date: 2008-04-01
Classification: A61B,A61F,A61L

Abstract:
1. An intervertebral measuring instrument for use in spine surgery comprising: a first portion fittable with respect to a second portion, at least a part of said first and said second portions for insertion into an intervertebral space, each of said first and second portions include a handle portion, and a spreading portion for insertion into an intervertebral space; a load cell mounted on at least one of said first and second portions to receive a force of displacement said first portion with respect to second portion; information transmission structures associated with said load cell for transmitting information about a measured force of said first portion with respect to said second portion away from said load cell, and at least one of a sonic, optical and mechanical displacement indicator for indicating the distance between said handle portion of said first portion and said handle portion of said second portion.