Self locking surgical retractor

Details Self locking surgical retractor Self locking surgical retractor

1996-01-02

1997-04-01

Apley, Richard J.

Surgery

Specula

Retractor

600210, 600215, 600219, 600222, 600231, A61B 130, A61B 1702

Patent

active

056161174

ABSTRACT:
A medical retractor having a support shaft on which is threaded a retractor arm drive that supports a retractor arm. The retractor arm drive includes a worm with threads that engage peripheral gear teeth of a worm gear; and the worm gear is threaded onto the support shaft. Rotating the worm, turns the worm gear and moves the retractor arm drive and retractor arm longitudinally along the support shaft. A stop prevents the support shaft from rotating with the worm gear in response to rotation of the worm.

REFERENCES:
patent: 1587897 (1926-06-01), Cameron
patent: 3227156 (1966-01-01), Gauthier
patent: 3643655 (1972-02-01), Peronti
patent: 4254763 (1981-03-01), McCready et al.
patent: 4627421 (1986-12-01), Symbas et al.
patent: 4747394 (1988-05-01), Watanabe
patent: 4926849 (1990-05-01), Downey
patent: 4989587 (1991-02-01), Farley
patent: 4991566 (1991-02-01), Shulman et al.
patent: 5052373 (1991-10-01), Michelson
patent: 5067477 (1991-11-01), Santangelo
patent: 5097820 (1992-03-01), Shulman et al.
patent: 5167223 (1992-12-01), Koros et al.
patent: 5375481 (1994-12-01), Cabrera et al.
patent: 5400774 (1995-03-01), Villalta et al.
Retractor illustrated in AESCULAP Product Brochure for "Microsurgical Lumbar Laminectomy".
Mechanical Engineering Design, Fifth Edition, by Joseph Edward Shigley and Charles R. Mischke, p. 329, "Figure 8-4, The Joyce Worm-Gear Screw Jack".

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