US 12,376,872 B2
Drive mechanisms for surgical instruments
Zachary S. Heiliger, Nederland, CO (US)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on May 12, 2023, as Appl. No. 18/196,503.
Application 18/196,503 is a continuation of application No. 16/785,910, filed on Feb. 10, 2020, granted, now 11,648,023, issued on May 16, 2023.
Prior Publication US 2023/0277206 A1, Sep. 7, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/295 (2006.01); A61B 18/08 (2006.01); A61B 18/14 (2006.01); A61B 17/00 (2006.01); A61B 17/29 (2006.01); A61B 17/32 (2006.01); A61B 18/00 (2006.01); A61B 18/18 (2006.01); A61B 34/00 (2016.01); A61B 34/35 (2016.01)
CPC A61B 17/295 (2013.01) [A61B 18/085 (2013.01); A61B 18/1445 (2013.01); A61B 2017/00199 (2013.01); A61B 2017/2936 (2013.01); A61B 2017/320094 (2017.08); A61B 2018/00077 (2013.01); A61B 2018/0063 (2013.01); A61B 2018/1807 (2013.01); A61B 2018/1861 (2013.01); A61B 2034/256 (2016.02); A61B 34/35 (2016.02); A61B 34/71 (2016.02)] 16 Claims
OG exemplary drawing
 
1. A surgical instrument for use with a robotic surgical system, comprising:
a housing;
a shaft extending distally from the housing;
a pair of jaw members disposed at a distal end of the shaft and configured to grasp tissue;
a knife blade configured to cut tissue grasped between the pair of jaw members;
a drive input disposed within the housing and configured to receive an input from the robotic surgical system to translate the knife blade;
a knife blade lock operably coupled to the drive input and defining an aperture through which at least a portion of the drive input extends, the knife blade lock configured to transition between a locked configuration wherein the knife blade lock engages the drive input to prevent the drive input from causing translation of the knife blade and an unlocked configuration wherein the knife blade lock is disengaged from the drive input to permit the drive input to cause translation of the knife blade;
an input shaft operably coupled to the drive input, the drive input configured to cause the input shaft to translate the knife blade in response to the input received by the drive input from the robotic surgical system; and
a gearbox assembly including:
an input gear engaged to a distal end portion of the input shaft, wherein the input provided to the drive input from the robotic surgical system drives rotation of the input shaft when the knife blade lock is in the unlocked configuration to drive rotation of the input gear;
a central gear defining an internal threading and an external threading in meshed engagement with the input gear; and
a lead screw extending through the central gear and threadingly engaged with the internal threading of the central gear, wherein rotation of the central gear in response to the input provided to the drive input from the robotic surgical system translates the lead screw to translate the knife blade.