Frederick E. Shelton, IV,Christopher W. Widenhouse
申请号：
US12420107
公开号：
US08137267B2
申请日:
2009.04.08
申请国别(地区):
US
年份:
2012
代理人:
摘要：
Devices and methods are disclosed for accessing a body cavity or other surgical site while providing optimal device length and improved tissue retraction, device retention and stability, and seal integrity. A surgical access device is disclosed that generally comprises an external seal housing having at least one working channel and that is coupled to a flexible and/or resilient retractor. The retractor can include a resilient ring at its distal circumference configured to be deformed to facilitate insertion through an incision and then to return to an undeformed state having a diameter greater than a diameter of the incision once within a body cavity. Various means of coupling the retractor to the housing are disclosed, as are various types of seals that can be included within the housing. “Low-profile”and “peel-away cannula” embodiments of the surgical access device are disclosed, along with methods of accessing a body cavity using such devices.
