Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Leg – Knee
Patent
1983-03-08
1986-09-30
Apley, Richard J.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Leg
Knee
A61F 262
Patent
active
046145184
ABSTRACT:
An artificial limb having two limb members connected by a joint is provided with rotator members, comprising one of the limb members, which are relatively rotatable about an axis extending along the limb. The rotator members are generally cylindrical, with the outer one forming a rotatable sleeve about the inner one. One of the rotator members has a concentric radially extending flange with an opening near the perimeter. A locking mechanism is provided on the other rotator member which is movable from a locking position to a released position. In the locking position, the locking mechanism provides a rigid connection between the two rotator members by inserting a plunger in the opening, thereby preventing rotation between the rotator members. When moved to its released position, the locking mechanism removes the plunger from the opening, thereby permitting relative rotation between rotator members. The locking member is disposed on one limb member in the vicinity of the joint and is connected via a coupling member to a fixed connection point on the other limb member. Normal movement of the limb about the joint thereby achieves movement of the locking mechanism between its locking and released positions, via the coupling member, and achieves automatic release and locking of the limb with respect to rotation the limb is bent and straightened.
REFERENCES:
patent: 2573347 (1947-07-01), Mazzola
patent: 2661479 (1953-12-01), Alderson
patent: 3351955 (1967-11-01), Middleton
patent: 3833942 (1974-09-01), Collins
patent: 4232405 (1980-11-01), Janovsky
patent: 4520512 (1985-06-01), Lehneis et al.
Lehneis Hans R.
Reibel Charles
Apley Richard J.
New York University
Prizant James
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