Bone fixation plate

Details Bone fixation plate Bone fixation plate

2011-06-21

2011-06-21

Barrett, Thomas C (Department: 3775)

Surgery

Instruments

Orthopedic instrumentation

Reexamination Certificate

active

07963981

ABSTRACT:
An apparatus for reducing the profile of a bone fixation plate while preventing backing out of screws is disclosed. The apparatus includes at least one section of relief and sections of engagement. The plate has at least two openings though which two screws can pass through bony tissue. As the screw is tightened, it will begin to lag the plate to the bone. When the screw head interferes with the plate at the interference point, there is a slight resistance that insertion forces can overcome. When the screw is advanced further, it snaps into the sliding fit area and is allowed to move freely. The forces that cause the screw to back out from the plate are preferably not strong enough to pass the screw head back past the interference section. It may be desirable to include a set screw to help prevent backout.

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