John P. Lunsford,Charles J. Adam,John W. Davis,Albert K. Chin
申请号：
US14139782
公开号：
US20140343367A1
申请日:
2013.12.23
申请国别(地区):
US
年份:
2014
代理人:
摘要：
A surgical apparatus includes an elongated cannula having an external sidewall surface and a lumen extending between a cannula proximal regional and a cannula distal region, the cannula is further configured to receive an endoscope, and has a handle located at the cannula proximal region, a first wire extending from the cannula distal region and adapted to slide longitudinally with respect to the cannula in both a distal and proximal direction via a control at the handle, and a ring connected to the first wire. The ring has a curved surface with concavity hollowed towards a region of the cannula configured to receive the endoscope.
