Fixing instruments for spinal surgery

Details Fixing instruments for spinal surgery Fixing instruments for spinal surgery

1990-03-07

1991-10-15

Hafer, Robert A.

Surgery

Instruments

Orthopedic instrumentation

606 72, 128 69, A61F 504, A61F 500

Patent

active

050571095

ABSTRACT:
A fixing instrument for spinal surgery comprises two units (1,36) which by means of bone screws (6,7) each may be secured to a vertebra. One of these units (1) includes a block (2) having two rotatably mounted bone screws (6,7) which by means of special locking means (16) are secured against turning after the bone screws have been screwed in.

REFERENCES:
patent: 2393831 (1946-01-01), Stader
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patent: 3741205 (1973-06-01), Markolf
patent: 4175555 (1979-11-01), Herbert
patent: 4493317 (1985-01-01), Klaue
patent: 4548199 (1985-10-01), Agee
patent: 4628919 (1986-12-01), Clyburn
patent: 4757809 (1988-07-01), Koeneman
patent: 4771767 (1988-09-01), Steffe

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