Document Type

Patent

Abstract

The present invention relates to an instrument for measuring the range of angular displacement associated with two human body portions connected to a common joint. The instrument includes two pivotally connected, elongate rods, and separate supports for supporting each of the rods on a respective one of the body portions in spaced relationship with the body portion. Each of the supports includes a pair of ball and socket assemblies which are mounted on the respective body portions in spaced relation to one another. The ball of each ball and socket assembly has an aperture formed therethrough for receiving the associated elongate rod. Such a support arrangement enables the body portions to be rotated about the common joint without affecting the natural movements of the body portions. An encoder is utilized to pivotally connect the two elongate rods and to generate an electrical output signal representing the relative angular position between the two rods. A counter and display circuit is responsive to the encoder output signal for determining the change in angular position between the two rods and displaying this value in terms of angular degrees.

Patent Country

US

Patent Number

US4436099

Publication Date

3-13-1984

Assignee(s)

The University of Toledo

Application Number

06/292899

Filing Date

August 1981

Primary Class

600/595

Secondary Class

600/587

Rights

These materials are free of copyright restrictions and are in the public domain within the United States only. The USPTO reserves the right to assert copyright protection internationally.

Institution

The University of Toledo

Repository

University of Toledo Libraries

Digital Publisher

Digital Initiatives

Share

COinS