Patent ID: 8834485
Filing Date: 2014-09-16
Classification: A61B

Abstract:
1. A medical instrument for measuring a spacing between two locations along a bony segment, comprising: first and second support members each including a proximal portion and a distal portion, said first support member movably coupled to said second support member to provide variable spacing between said distal portions of said support members; a first engagement element attached to said distal portion of said first support member and extending generally along a first axis, a second engagement element attached to said distal portion of said second support member and extending generally along a second axis, at least one of said engagement elements including an articulating portion articularly engaged with a mounting portion to provide multi-axial movement of said articulating portion relative to said mounting portion to thereby vary an angular orientation of said first axis relative to said second axis, said articulating portion defining an axial passage including a transverse stop member extending across a core of said axial passage, said articulating portion and said mounting portion being engaged to one another by a ball and socket connection arrangement to provide said multi-axial movement of said articulating portion relative to said mounting portion; and an indicator extending between proximal portions of said first and second support members, said indicator including multiple indicia corresponding to variable distances between said first and second axes of said engagement elements adjacent said engagement elements to provide an indication corresponding to a select distance between said first and second axes adjacent said engagement elements.