David S. Ruppert,John W. Durham, III,Alexander G. Verderber,Drew H. Brisley,Casey Haigh
申请号：
US14604686
公开号：
US09999414B2
申请日:
2015.01.24
申请国别(地区):
US
年份:
2018
代理人:
摘要：
Rib refraction devices and methods of its use and manufacture are disclosed. A retraction device may include a first frame portion and a second frame portion. The second frame portion may be attached to the first frame portion. The second frame portion may mechanically move between a first position and a second position with respect to the first frame portion. The retraction device may also include a first blade being pivotally attached to the first frame portion and comprising a flexible material. The retraction device may also include a second blade being pivotally attached to the second frame portion and comprising a flexible material.
