Method and means for anterior lumbar exact cut with quadrilatera

Details Method and means for anterior lumbar exact cut with quadrilatera Method and means for anterior lumbar exact cut with quadrilatera

1996-01-24

1998-03-03

Buiz, Michael

Surgery

Instruments

Orthopedic instrumentation

606 61, A61B 1716

Patent

active

057229775

ABSTRACT:
Presented is a method and instrumentation for removal of a pair of rectangular blocks of vertebral bone tissue of predetermined and precise dimensions to provide an intervertebral recess, with guarded depth for safety, achieving and maintaining the desired intervertebral space, as well as obtaining and injecting into the intervertebral recess a well-fitted bone plug of the same dimension as the recess that receives it. Two cooperating instruments are utilized in the invention, one being an intervertebral mortising cutter and the other a precision guide and spacer. The guide and spacer functions dually to retain the associated adjacent vertebrae at a precise selected and predetermined spacing and to guide penetration of the mortising cutter. Following advancement of the mortising cutter into the bone tissue of the two adjacent vertebrae, the instruments, along with the blocks of bone tissue, are removed from the site to produce a precisely configured recess. The mortising cutter is then used to harvest a bone plug from a suitable donor site, with the bone plug being subsequently inserted into the prepared vertebral recess to thus promote fusion between the bone plug and the associated surfaces of the vertebrae.

REFERENCES:
patent: 1279495 (1918-09-01), Dom
patent: 1401469 (1921-12-01), Hawkinson
patent: 3683892 (1972-08-01), Harris
patent: 3848601 (1974-11-01), Ma et al.
patent: 5423825 (1995-06-01), Levine

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