SURGICAL STAPLER HAVING TEMPERATURE-BASED MOTOR CONTROL

WIPO Patent Application WO/2017/053252

A3

A surgical stapler. The surgical stapler includes a drive system, an electric motor, a battery and a control system. The electric motor is mechanically coupled to the drive system. The battery is electrically couplable to the electric motor. The control system is electrically connected to the electric motor and includes an H-bridge circuit and a temperature sensing device. The H-bridge circuit includes a high side and a low side. The low side of the H-bridge circuit includes first and second switching devices, and a resistive heating element electrically connected in series with the first switching device. The temperature sensing device is positioned proximate the resistive heating element. The control system is configured to control a force applied to the drive system based on a temperature associated with the resistive heating element and sensed by the temperature sensing device

OVERMYER MARK D (US)
YATES DAVID C (US)
SHELTON IV FREDERICK E (US)
ADAMS SHANE R (US)
HARRIS JASON L (US)

PCT/US2016/052571

August 03, 2017

September 20, 2016

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ETHICON ENDO SURGERY LLC (US)

H02P7/285; A61B17/00; G01R19/00

EP2724674A2	2014-04-30
JP2008220032A	2008-09-18
US20040085180A1	2004-05-06
US20160256153A1	2016-09-08
CA1015829A	1977-08-16
EP0033633A2	1981-08-12

LYON ET AL: "Relationship between current load and temperature for quasi-steady state and transient conditions", SPIE - INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING. PROCEEDINGS, vol. 4020, 30 March 2000 (2000-03-30), US, XP055349232, ISSN: 0277-786X, ISBN: 978-1-5106-0753-8, DOI: 10.1117/12.381580

SHIRTZ, Joseph F. et al. (US)

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