Steven G. Hall,Joseph Thomas Mozloom, JR.,Christopher W. Birri,Daniel J. Prenger,Ryan Alan Klenke
申请号：
US16009591
公开号：
US20190380742A1
申请日:
2018.06.15
申请国别(地区):
US
年份:
2019
代理人:
摘要：
A trocar assembly includes a trocar that includes a trocar housing and a cannula that extends distally from the trocar housing, and an integral seal system positioned within a central passageway extending axially through the trocar and engageable against a surgical tool shaft extended therethrough. The integral seal system includes an asymmetric seal and a duckbill seal arranged distal to the asymmetric seal, and the asymmetric seal defines a diaphragm that complements insertion and extraction drag forces generated by the duckbill seal against the surgical tool shaft such that total insertion and extraction drag forces generated by the integral seal system are equalized.
