ROBINSON, WILLIAM E.,ALLEN, JAMES D.,HAMMERLAND, JOHN A.
申请号：
CA3065879
公开号：
CA3065879A1
申请日:
2019.12.20
申请国别(地区):
CA
年份:
2020
代理人:
摘要：
An access device configured for accommodating passage of an instrument with acurved end effector includes a housing assembly and a cannula member extendingfrom thehousing. The cannula member includes a length and a plurality of rigidportions alternatingwith a plurality of flexible portions. The cannula member is configured tomaintain a circularcross-sectional profile when a force is applied to the cannula member from theoutside and toflex to an oblong cross-sectional profile when a force is applied to thecannula member fromthe inside.
