Systems and methods for performing neurophysiologic monitoring during spine surgery
First Claim
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1. A surgical instrument configured to allow a user to localize a nerve and guide placement of first and second subdermal needle electrodes, comprising:
- a. a body portion comprisingi. a first transcutaneous, surface stimulation electrode having a first longitudinal axis;
ii. a second transcutaneous, surface stimulation electrode having a second longitudinal axis, andiii. at least first and second subdermal needle electrode guides,wherein said first subdermal needle electrode guide is positioned on a first arm stemming from and offset from said first transcutaneous, surface stimulation electrode, and said second subdermal needle electrode guide is positioned on a second arm stemming from and offset from said second transcutaneous, surface stimulation electrode, the first transcutaneous, surface stimulation electrode being positioned medially on the body portion, and the second transcutaneous, surface stimulation electrode being positioned distally on the body portion, said first and second transcutaneous, surface stimulation electrodes separated from one another by a distance and each including a distal skin contacting surface, and wherein said first subdermal needle electrode guide includes a first angled slot having a third longitudinal axis positioned at an angle relative to the first longitudinal axis of the first transcutaneous, surface stimulation electrode and wherein the second subdermal needle electrode guide includes a second angled slot having a fourth longitudinal axis positioned at an angle relative to the second longitudinal axis of the second transcutaneous, surface stimulation electrode, and wherein the first subdermal needle electrode guide is dimensioned to receive at least a portion of said first subdermal needle electrode therein, and wherein the second subdermal needle electrode guide is dimensioned to receive at least a portion of said second subdermal needle electrode therein, andb. a handle member connected to the body portion and configured to allow the user to position the surgical instrument.
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Abstract
This disclosure describes a surgical instrument comprising a combination femoral nerve localizer and needle placement guide instrument. The instrument may be used with a neuromonitoring system to localize and monitor the femoral nerve during a spinal procedure.
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Citations
11 Claims
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1. A surgical instrument configured to allow a user to localize a nerve and guide placement of first and second subdermal needle electrodes, comprising:
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a. a body portion comprising i. a first transcutaneous, surface stimulation electrode having a first longitudinal axis; ii. a second transcutaneous, surface stimulation electrode having a second longitudinal axis, and iii. at least first and second subdermal needle electrode guides, wherein said first subdermal needle electrode guide is positioned on a first arm stemming from and offset from said first transcutaneous, surface stimulation electrode, and said second subdermal needle electrode guide is positioned on a second arm stemming from and offset from said second transcutaneous, surface stimulation electrode, the first transcutaneous, surface stimulation electrode being positioned medially on the body portion, and the second transcutaneous, surface stimulation electrode being positioned distally on the body portion, said first and second transcutaneous, surface stimulation electrodes separated from one another by a distance and each including a distal skin contacting surface, and wherein said first subdermal needle electrode guide includes a first angled slot having a third longitudinal axis positioned at an angle relative to the first longitudinal axis of the first transcutaneous, surface stimulation electrode and wherein the second subdermal needle electrode guide includes a second angled slot having a fourth longitudinal axis positioned at an angle relative to the second longitudinal axis of the second transcutaneous, surface stimulation electrode, and wherein the first subdermal needle electrode guide is dimensioned to receive at least a portion of said first subdermal needle electrode therein, and wherein the second subdermal needle electrode guide is dimensioned to receive at least a portion of said second subdermal needle electrode therein, and b. a handle member connected to the body portion and configured to allow the user to position the surgical instrument. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification