Washer for use with cancellous screw for attaching soft tissue t

Details Washer for use with cancellous screw for attaching soft tissue t Washer for use with cancellous screw for attaching soft tissue t

1989-01-06

1991-01-29

Hafer, Robert A.

Surgery

Instruments

Orthopedic instrumentation

606 75, A61F 504

Patent

active

049883518

ABSTRACT:
A soft tissue washer for use with a cancellous screw for attaching soft tissue, such as ligaments, to bone has posts disposed on a distal face of a washer body to limit penetration of sharp pins extending from the distal face into soft tissue, an annular recess disposed is the distal face to receive and clamp soft tissue, recess portions deeper than the annular recess disposed in the distal face to relieve compression of soft tissue, a dished recess in a proximal face of the washer body to entirely receive the head of the cancellous screw such that the head does not protrude from the washer and suture retention passages extending from the dished recess to a lateral rim of the washer for receiving sutures.

REFERENCES:
patent: 937199 (1909-10-01), Willard
patent: 2490364 (1949-12-01), Livingston
patent: 2570465 (1949-08-01), Lundholm
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patent: 3212387 (1965-10-01), Madansky
patent: 3554193 (1971-01-01), Konstantinou
patent: 3579831 (1971-05-01), Stevens et al.
patent: 3596656 (1971-08-01), Kaute
patent: 3761867 (1973-09-01), Churla
patent: 3875936 (1975-04-01), Volz
patent: 3997138 (1976-12-01), Crock et al.
patent: 4429690 (1984-02-01), Angelino-Pievani
patent: 4493317 (1985-01-01), Klaue
patent: 4688561 (1987-08-01), Reese
patent: 4796612 (1989-01-01), Reese
Synthes Literature "AO Screw", pp. 12, 13, 28 and 29, Anterior Cruciate Ligament Repairs in World Class Skiers, by R. W. Higgins et al, pp. 439-447 The American Journal of Sports Medicine, vol. 15, No. 5 1987.
Various AO Literature.

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