US 12,082,817 B2
Power control circuit for powered surgical stapler
Shane R. Adams, Lebanon, OH (US); Nicholas J. Ross, Franklin, OH (US); Joseph D. Paulowski, Butler, KY (US); William R. Stager, Dayton, OH (US); Timothy E. Goode, Springboro, OH (US); and Austin E. Wise, Cincinnati, OH (US)
Assigned to Cilag GmbH International, Zug (CH)
Filed by Cilag GmbH International, Zug (CH)
Filed on Sep. 26, 2019, as Appl. No. 16/583,381.
Claims priority of provisional application 62/815,678, filed on Mar. 8, 2019.
Prior Publication US 2020/0281593 A1, Sep. 10, 2020
Int. Cl. A61B 17/115 (2006.01); A61B 17/11 (2006.01); A61B 90/00 (2016.01); A61B 17/00 (2006.01)
CPC A61B 17/1155 (2013.01) [A61B 17/1114 (2013.01); A61B 90/08 (2016.02); A61B 2017/00017 (2013.01); A61B 2017/00075 (2013.01); A61B 2017/00119 (2013.01); A61B 2017/00398 (2013.01); A61B 2017/00734 (2013.01); A61B 2090/0811 (2016.02)] 20 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
(a) a body configured to be gripped by a user, a motor housed within the body, a closure member movably coupled to the body, and a firing trigger movably coupled to the body, wherein each of the closure member and the firing trigger is manually actuatable by a user;
(b) a shaft extending distally from the body;
(c) an end effector disposed at a distal end of the shaft, wherein the end effector is configured to selectively move from an open position to a closed position to clamp tissue in response to actuation of the closure member by the user, wherein the end effector in the closed position is actuatable by the motor to drive a plurality of staples into the clamped tissue;
(d) a safety switch configured to be mechanically actuated by a portion of the apparatus and assume an actuated state automatically in response to the end effector assuming the closed position, wherein the safety switch is configured to generate an electrical safety signal in response to being mechanically actuated; and
(e) a sequential logic device operatively coupled with the motor, wherein the sequential logic device is configured to detect an actuation of the safety switch and an actuation of the firing trigger, wherein the sequential logic device is operable to sequentially:
(i) detect an order in which the safety switch and the firing trigger are actuated,
(ii) compare the detected order to a predetermined order, and
(iii) in response to determining that the detected order is equivalent to the predetermined order, transmit a motor activation signal to the motor to activate and thereby actuate the end effector to drive the plurality of staples into the clamped tissue.