Blewett, Jeffrey,Gharib, James E.,Kaula, Norbert,Farquhar, Allen
申请号：
AU2015246103
公开号：
AU2015246103B2
申请日:
2015.10.21
申请国别(地区):
AU
年份:
2017
代理人:
摘要：
#$%^&*AU2015246103B220170629.pdf#####Abstract A system for establishing an operative corridor for spinal surgery includes a plurality of 5 sequential dilators deliverable through bodily tissue having neural structures in a selected path toward a targeted intervertebral disc of a spine, the plurality of sequential dilators including at least an inner dilator and an outer dilator cannula configured to be guided over the previously delivered inner dilator. The inner dilator has a stimulation electrode positioned along a distal tip region to deliver a stimulation signal to the bodily tissue 10 when the inner dilator is positioned in the selected path toward the targeted intervertebral disc of the spine. The system also has a nerve monitoring system, comprising a control unit and a plurality of leg muscle sensor electrodes, and configured to deliver an electrical stimulation signal to the stimulation electrode when said inner dilator is positioned along the selected pat. The nerve monitoring system is configured to monitor electrical activity 15 detected by the leg muscle sensor electrodes in response to the stimulation electrode of said inner dilator. The control unit has a display device that simultaneously displays: a numeric stimulation current threshold and one of a plurality of different color-coded indicators. The system also includes a working corridor instrument deliverable over the outer dilator cannula toward the targeted intervertebral disc and configured to establish an 20 operative corridor to the targeted intervertebral disc.
