Clamp for attaching a vertebral fixation element to a spinal rod

Details Clamp for attaching a vertebral fixation element to a spinal rod Clamp for attaching a vertebral fixation element to a spinal rod

1993-12-30

1995-06-13

Jackson, Gary

Surgery

Instruments

Orthopedic instrumentation

606 73, 606 72, A61F 502

Patent

active

054238188

ABSTRACT:
A clamp is provided for clamping a spinal rod to a vertebral fixation element which permits access directly from the top of the instrumentation site. The clamp includes a body defining a channel configured to receive the spinal rod and a pair of conical sleeves for restrainably securing the spinal rod to the clamp by forcibly inserting the sleeves between the spinal rod and the channel. The clamp further includes a projection extending from the body, terminating in a T-bar, and a washer slidably disposed on the projection between the T-bar and channel. As the conical sleeves are forcibly inserted into the channel, the sleeves bear upon the the washer and displace the washer in the direction of the T-bar, thereby clamping the vertebral fixation element between the T-bar and washer. The dual function of the conical sleeves thereby clamps the spinal rod to a vertebral fixation element.

REFERENCES:
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patent: 5176678 (1993-01-01), Tsou
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patent: 5209752 (1993-05-01), Ashman et al.
patent: 5246442 (1993-09-01), Ashman et al.
patent: 5261909 (1993-11-01), Sutterlin et al.

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