Gravity operated orthotic brace drop lock

Details Gravity operated orthotic brace drop lock Gravity operated orthotic brace drop lock

1994-02-18

1995-06-20

Dvorak, Linda C. M.

Leather manufactures

602 26, A61F 500

Patent

active

054257000

ABSTRACT:
A gravity operated locking device and method of operation are disclosed for use with an orthotic brace of a type having upper and lower members hinged together for articulation of the brace with flexion and extension of a limb joint, the locking device comprising a housing adapted for ready attachment to or ready detachment from a portion of the brace, preferably the upper brace member, and forming a groove extending along the length of the housing for receiving a drop bolt tapered at its lower end for riding over and locking into engagement with a projecting stop surface on the lower brace member. The drop bolt is preferably formed with an elongated slot captured by a portion of an attachment means for the brace. The locking device may include an overriding lock for securing the brace in either a fixed, fully extended condition or free for articulation. With the overriding lock released, the drop bolt may be manually operated for selectively permitting either articulated or locked operation of the brace.

REFERENCES:
patent: 2433570 (1947-12-01), Markkula
patent: 2433571 (1947-12-01), Markkula
patent: 2591373 (1952-04-01), Petruch
patent: 2594227 (1952-04-01), Smith
patent: 2646793 (1953-07-01), Swiech et al.
patent: 4672955 (1987-06-01), Cooper
patent: 4915098 (1990-04-01), Young et al.
patent: 4928676 (1990-05-01), Pansiera
patent: 5108455 (1992-04-01), Telikicherla
Prosthetics and Orthotics Catalogue, distributed by Keiai Orthopedic Appliance Co., Ltd., Tokyo, Japan, front cover, pp. 43-44, 61-62, 65, 69 and back cover.

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