Maurice M. Smith,Kevin T. Foley,Roy Lim,Thomas E. Roehm,Richard G Fessler
申请号：
US14744745
公开号：
USRE046148E1
申请日:
2015.06.19
申请国别(地区):
US
年份:
2016
代理人:
摘要：
Methods and devices for performing percutaneous surgery in a patient are provided. A retractor includes a working channel formed by a first portion coupled to a second portion. The first and second portions are movable relative to one another from an unexpanded configuration to an expanded configuration to increase the size of the working channel along the length of the working channel while minimizing trauma to skin and tissue.
