System and methods for performing surgical procedures and assessments
First Claim
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1. A method for inserting a spinal implant through a trans-psoas operative corridor to an intervertebral disc, comprising:
- sequentially inserting a plurality of trans-psoas dilators of increasing diameters to provide a trans-psoas path through bodily tissue toward a lateral aspect of a targeted intervertebral disc of a lumbar spine, the plurality of dilators comprising;
a first dilator having a first length,a second dilator to slidably engage with an exterior of the first dilator and having a second length less than the first length of the first dilator, wherein the second dilator comprises;
a proximal connector region configured to releasably mate with an electrical cable of a nerve monitoring system, and a stimulation electrode exposed along a tapered distal tip region of the second dilator to emit an electrical stimulation signal to the bodily tissue for nerve monitoring while the second dilator is positioned in the trans-psoas path, anda third dilator to slidably engage with an exterior of the second dilator and having a third length less than the second length of the second dilator, wherein the third dilator comprises;
a proximal connector region configured to releasably mate with the electrical cable of a nerve monitoring system, and a stimulation electrode exposed along a tapered distal tip region of the third dilator to emit an electrical stimulation signal to the bodily tissue for nerve monitoring while the third dilator is positioned in the trans-psoas path;
sliding a working corridor instrument over an outermost of the plurality of trans-psoas dilators along the trans-psoas path through the bodily tissue to the lateral aspect of the targeted intervertebral disc of the lumbar spine, the working corridor instrument being configured to enlarge the trans-psoas path through the bodily tissue and define a trans-psoas operative corridor along the trans-psoas path through the bodily tissue toward the lateral aspect of the targeted intervertebral disc of the lumbar spine, wherein the trans-psoas operative corridor defined by the working corridor instrument is dimensioned so as to pass a spinal fusion implant through the trans-psoas operative corridor to the targeted intervertebral disc of the lumbar spine.
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Abstract
The present invention involves systems and related methods for performing surgical procedures and assessments, including the use of neurophysiology-based monitoring to: (a) determine nerve proximity and nerve direction to surgical instruments employed in accessing a surgical target site; (b) assess the pathology (health or status) of a nerve or nerve root before, during, or after a surgical procedure; and/or (c) assess pedicle integrity before, during or after pedicle screw placement, all in an automated, easy to use, and easy to interpret fashion so as to provide a surgeon-driven system.
308 Citations
18 Claims
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1. A method for inserting a spinal implant through a trans-psoas operative corridor to an intervertebral disc, comprising:
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sequentially inserting a plurality of trans-psoas dilators of increasing diameters to provide a trans-psoas path through bodily tissue toward a lateral aspect of a targeted intervertebral disc of a lumbar spine, the plurality of dilators comprising; a first dilator having a first length, a second dilator to slidably engage with an exterior of the first dilator and having a second length less than the first length of the first dilator, wherein the second dilator comprises;
a proximal connector region configured to releasably mate with an electrical cable of a nerve monitoring system, and a stimulation electrode exposed along a tapered distal tip region of the second dilator to emit an electrical stimulation signal to the bodily tissue for nerve monitoring while the second dilator is positioned in the trans-psoas path, anda third dilator to slidably engage with an exterior of the second dilator and having a third length less than the second length of the second dilator, wherein the third dilator comprises;
a proximal connector region configured to releasably mate with the electrical cable of a nerve monitoring system, and a stimulation electrode exposed along a tapered distal tip region of the third dilator to emit an electrical stimulation signal to the bodily tissue for nerve monitoring while the third dilator is positioned in the trans-psoas path;sliding a working corridor instrument over an outermost of the plurality of trans-psoas dilators along the trans-psoas path through the bodily tissue to the lateral aspect of the targeted intervertebral disc of the lumbar spine, the working corridor instrument being configured to enlarge the trans-psoas path through the bodily tissue and define a trans-psoas operative corridor along the trans-psoas path through the bodily tissue toward the lateral aspect of the targeted intervertebral disc of the lumbar spine, wherein the trans-psoas operative corridor defined by the working corridor instrument is dimensioned so as to pass a spinal fusion implant through the trans-psoas operative corridor to the targeted intervertebral disc of the lumbar spine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification