US 12,343,066 B2
Electrical isolation of electrosurgical instruments
Niko Murrell, Blue Ash, OH (US); John Hibner, Mason, OH (US); Barry Worrell, Maineville, OH (US); and Konstantin Zabotkin, Mason, OH (US)
Assigned to CILAG GMBH INTERNATIONAL, Zug (CH)
Filed by CILAG GMBH INTERNATIONAL, Zug (CH)
Filed on Jun. 20, 2022, as Appl. No. 17/844,536.
Application 17/844,536 is a division of application No. 15/727,121, filed on Oct. 6, 2017, granted, now 11,364,067.
Prior Publication US 2022/0313352 A1, Oct. 6, 2022
Int. Cl. A61B 18/14 (2006.01); A61B 34/00 (2016.01); A61B 34/30 (2016.01); A61B 34/37 (2016.01); A61B 17/00 (2006.01); A61B 18/00 (2006.01); A61B 18/12 (2006.01)
CPC A61B 18/1445 (2013.01) [A61B 34/30 (2016.02); A61B 34/37 (2016.02); A61B 34/71 (2016.02); A61B 34/74 (2016.02); A61B 2017/00473 (2013.01); A61B 2018/00077 (2013.01); A61B 2018/00083 (2013.01); A61B 2018/00208 (2013.01); A61B 2018/00589 (2013.01); A61B 2018/00595 (2013.01); A61B 2018/00601 (2013.01); A61B 2018/1253 (2013.01); A61B 2018/126 (2013.01); A61B 2018/1422 (2013.01); A61B 2018/146 (2013.01); A61B 2034/305 (2016.02)] 14 Claims
OG exemplary drawing
 
1. A surgical tool, comprising:
a drive housing;
an elongate shaft that extends from the drive housing;
an end effector arranged at a distal end of the elongate shaft and including a jaw secured to a jaw holder, the jaw providing a contact plate and the jaw holder defining a cable passage;
a wrist that couples the end effector to the elongate shaft and includes a distal clevis having an axle that rotatably mounts the jaw holder to the distal clevis; and
an electrical conductor extending from the drive housing, through the wrist and the cable passage, and terminating at the contact plate to supply electrical energy to the jaw;
a first portion injection molded to the jaw and defining the cable passage;
and a second portion overmolded onto the first portion to encapsulate and electrically insulate the contact plate and an exposed portion of the electrical conductor;
wherein injection molding the first portion defines a cavity that contains the contact plate and the exposed portion of the electrical conductor, and wherein injection molding the second portion fills and encapsulates the cavity.