04986280 is referenced by 81 patents and cites 17 patents.

A system is described for sensing the relative angular orientation of two relatively movable joint segments of a living body joined together at a joint. The system comprises at least two links coupled together about a pivot axis so that the links are pivotable relative to one another about the axis so as to define a variable mechanical angle between the links about the axis. The two links are secured respectively to the joint segments so that the links pivot about the pivot axis when the joint segments pivot about said joint. A Hall effect sensor is used to accurate sense the mechanical angle. The mechanical angle sensed by the sensor is then correlated with the actual angle made by the joint segments. The arrangement is used with each finger and thumb joint of the hand to provide data representative of finger and thumb orientations of a hand.

Title
Hand position/measurement control system
Application Number
7/222092
Publication Number
4986280
Application Date
July 20, 1988
Publication Date
January 22, 1991
Inventor
Philip Churchill
Arlington
MA, US
W Thompson Lawrence
Bedford
MA, US
Beth Marcus
Lexington
MA, US
Agent
Schiller Pandiscio & Kusmer
Assignee
Arthur D Little
MA, US
IPC
A61B 5/103
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