Exercise devices – User manipulated force resisting apparatus – component... – Utilizing resilient force resistance
Patent
1995-06-02
1997-03-18
Dvorak, Linda C.
Exercise devices
User manipulated force resisting apparatus, component...
Utilizing resilient force resistance
601 33, 602 16, 602 36, 602 37, 128898, A61F 500
Patent
active
056117647
ABSTRACT:
An orthosis for stretching tissue that limits compressive forces on the soft tissue around a joint during movement of the joint. The orthosis includes two relatively pivotable cuff arms with a cuff on each arm. The cuffs clamp onto the body portions on either side of the joint. The pivot axis of the cuff arms is spaced from the pivot axis of the joint, so that movement of the cuff arms to extend the joint results in distractive forces being applied to the joint. The cuffs are selectively moved on the cuff arms, during extension and flexion, to provide the proper amount of distractive forces to the joint and to limit compressive forces on the joint. A mechanical advantage is gained through the use of a gear drive mechanism for transmitting to the joint the force applied by the patient. This allows the orthosis to be relatively small and light weight. The orthosis also provides a portable system for continuous passive motion therapy for a joint. The orthosis may be operated by a manual plus electric drive cycling it between extremes of motion. Provision is made for monitoring the range of motion or the force applied.
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Publication by Dynasplit Systems, Inc. entitled "Dynasplint LPS Orthosis - Knee Extension" (Date unknown, but prior to Aug. 23, 1991).
Bonutti Peter M.
Zitzmann Gary E.
Bonutti Peter M.
Dvorak Linda C.
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