Adjustable polycentric orthopedic appliance hinge

Details Adjustable polycentric orthopedic appliance hinge Adjustable polycentric orthopedic appliance hinge

1984-06-01

1986-07-15

Crowder, Clifford D.

Surgery

Truss

Perineal

128 80C, 128 80F, 74109, 74526, 403 62, 403 84, A61F 300

Patent

active

045999988

ABSTRACT:
An orthopedic hinge is polycentric and employs a rack cooperating with pinions formed at the ends of the hinge arms. A special arrangement for limiting rack displacement is effective to selectively clamp the hinge arms at a given arm angle or to permit movement within a limited range of allowable angles.

REFERENCES:
patent: 304696 (1884-09-01), Bronson
patent: 505382 (1893-09-01), Berghoff
patent: 552143 (1895-12-01), Rankin
patent: 1330298 (1920-02-01), Baird
patent: 4370977 (1983-02-01), Mauldin et al.
patent: 4372298 (1983-02-01), Lerman
patent: 4381768 (1983-05-01), Erichsen et al.
patent: 4520802 (1985-06-01), Mercer et al.
patent: 4520804 (1985-06-01), DiGeorge
patent: 4524764 (1985-06-01), Miller et al.

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