Matthew Schwartz;Benjamin VerHage;James Coleman Lee;Troy D. Woolley;Michael Serra;Brian Snider
发明人:
James Coleman Lee,Benjamin VerHage,Michael Serra,Troy D. Woolley,Brian Snider,Matthew Schwartz
申请号：
US13821224
公开号：
US09486133B2
申请日:
2011.08.23
申请国别(地区):
US
年份:
2016
代理人:
摘要：
A surgical access system comprising a tissue dilation assembly and a tissue retraction assembly, both of which may be equipped with one or more electrodes for use in detecting the existence of (and optionally the distance and/or direction to) neural structures. A retractor assembly for creating an operative corridor to a spinal surgical target site is disclosed, comprising: a retractor body and a plurality retractor blades extending generally perpendicularly to the retractor body, the retractor body being operable to separate the at plurality of retractor blades relative to each； and a supplemental retractor blade assembly attachable to at least two of the plurality of retractor blades, the supplemental retractor blade assembly comprising an elongated supplemental retractor blade and a crossbar connector, the crossbar connector configured to be attached to said at least two retractor blades while engaging the supplemental retractor blade.
