Medical diagnostic device for applying controlled stress to join

Surgery – Truss – Pad

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A61B 5103

Patent

active

056621213

ABSTRACT:
A medical diagnostic device for applying a desired stress to a limb joint has a frame, a limb-restraint at a first end of the frame for immobilizing a first limb portion on one side of the joint, a cradle at a second end of the frame for receiving and supporting a second limb portion on the opposite side of the joint, a reciprocable member connected between the frame and cradle and constrained to move a preselected distance between a first position in which the cradle is proximal to the frame and a second position in which the cradle is remote from the frame, and a driver for controllably moving the reciprocable member from the first position to the second position. Movement of the reciprocable member moves the cradle from a position in which the joint is relaxed to a position in which the joint is subjected to the controlled stress. The invention also covers a method of applying a desired stress to a limb joint, comprising the steps of immobilizing a first limb portion on one side of the joint, receiving a second limb portion on the opposite side of the joint in a movable cradle, and applying a preselected force on the second limb portion by moving the cradle by a preselected amount from a first position in which the joint is relaxed to a second position in which the joint is subjected to the desired stress.

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