公开(公告)号：US11045904B2

公开(公告)日：2021-06-29

申请号：US14818063

申请日：2015-08-04

Applicant: Intuitive Surgical Operations, Inc.

Inventor： Samuel T. Crews

IPC: B23K26/22 ,  A61B17/34 ,  B23K31/02 ,  A61B17/00 ,  A61B34/30

Abstract: A cannula includes a bowl portion with at least one depression in its outer surface, a tube portion, and a plurality of welds located at the at least one depression and joining the bowl portion to the tube portion. The plurality of welds may be discrete welds spaced from one another along a circumferential direction of the cannula. The weld joining a cannula bowl portion and a tube portion may be spaced from the distal end of the bowl portion. Various exemplary embodiments further contemplate methods of manufacturing a cannula by welding a tube portion and a bowl portion. Welding may occur, for example, in at least one depression of the bowl portion to form discrete welds spaced from one another along a circumferential direction of the cannula. In another example, welding may occur at a location spaced from and proximal to a distal end of the bowl portion.

公开(公告)号：US09687302B2

公开(公告)日：2017-06-27

申请号：US14149535

申请日：2014-01-07

Applicant: Intuitive Surgical Operations, Inc.

Inventor： Samuel T. Crews ,  Andrew Crews ,  Edward P. Donlon ,  Craig Gerbi ,  Kenneth L. Gong ,  Karnarnadakala D. Krishnanand ,  Peling Lee ,  Theodore W. Rogers ,  John Ryan Steger ,  Charles E. Swinehart

IPC: A61B17/00 ,  A61B19/00 ,  A61B17/34 ,  A61B34/30 ,  A61B17/29

CPC classification number: A61B34/30 ,  A61B17/3421 ,  A61B2017/00845 ,  A61B2017/2926 ,  Y10T29/49826

Abstract: A surgical apparatus includes a cannula and a surgical instrument. The cannula includes a curved longitudinal axis along at least a portion of its length. The surgical instrument includes an elongated shaft having a distal end and a proximal end, and an end effector coupled to the distal end of the elongated shaft. At least a portion of the end effector is configured to contact an inner surface of the cannula during insertion of the surgical instrument into the curved cannula. A threshold galling stress between the portion of the end effector and an inner surface of the curved cannula is at least 10,000 pounds per square inch.