METHOD AND APPARATUS FOR THE REMOVAL OF INTERVERTEBRAL DISCS

摘要

A method for the removal of an intervertebral disc or parts thereof to be treated that includes: inserting a first longitudinal bone anchor into a pedicle of a first vertebra; inserting a second longitudinal bone anchor into a pedicle of a second vertebra; bridging the first and second anchors using a bridging element including a first and second clamp; attaching adjustable extension arms to each of the two clamps; introducing a longitudinal guiding element into the intervertebral disc or the subchondral bone of one of the vertebral bodies adjacent of intervertebral disc; fixing a retractororthogonally on the longitudinal guiding element; connecting the free ends extension arms to the retractor; immobilizing the extension arms to obtain a rigid assembly; and using the retractor as an anatomically positioned platform for performing the removal of the intervertebral disc to be treated or parts thereof, and a kit and apparatus for performing the method.

主权项

1. A method for the removal of intervertebral discs or parts thereof comprising the following steps:
inserting a first longitudinal bone anchor into one of the two pedicles of a first vertebra on one side of the intervertebral disc to be treated; inserting a second longitudinal bone anchor into one of the two pedicles of a second vertebra on the same side or the other side of the intervertebral disc to be treated; bridging the first and second longitudinal bone anchor by a bridging element comprising a first and second clamp connected by a hinge; attaching adjustable extension arms to each of the two clamps; introducing a longitudinal guiding element into
(i) the intervertebral disc to be treated; or(ii) the subchondral bone of one of the vertebral bodies adjacent of intervertebral disc to be treatedat an angle α with respect to the sagittal plane of the patient, the angle α being in the range of 80°-90°; fixing a retractor orthogonally on the longitudinal guiding element; connecting the free ends of the extension arms to the retractor; immobilizing the extension arms in order to obtain a rigid assembly; and using the retractor as an anatomically positioned platform for performing the removal of the intervertebral disc to be treated or parts thereof.