公开(公告)号：US20160220272A1

公开(公告)日：2016-08-04

申请号：US15057080

申请日：2016-02-29

Applicant: Intuitive Surgical Operations, Inc.

Inventor： Stephen J. Blumenkranz ,  Bruce Michael Schena ,  Randall Goldberg

IPC: A61B17/34 ,  A61B34/30

CPC classification number: A61B17/3423 ,  A61B17/3462 ,  A61B17/3474 ,  A61B34/30 ,  A61B34/37 ,  A61B34/76 ,  A61B2017/3441 ,  A61B2090/065

Abstract: Embodiments of a cannula seal are disclosed. In some embodiments, a cannula seal can include a base portion that engages with a cannula; and a seal portion integrally formed with the base portion that slidebly engages with an instrument shaft such that an insertion frictional force between the seal portion and the instrument shaft for insertion of the instrument shaft is symmetrical and substantially equal with a retraction frictional force.