Timer circuit to control firing of powered surgical stapler

US11224432B2 · kind B2 · utility

Assignee

• Cilag GmbH International · CH

Inventors

• Shane R. Adams · Lebanon, US
• Nicholas J. Ross · Franklin, US
• Joseph D. Paulowski · Butler, US
• William R. Stager · Kettering, US
• Timothy E. Goode · Springboro, US
• Austin E. Wise · Cincinnati, US

Key dates

• Filing date: Sep 26, 2019
• Grant date: Jan 18, 2022
• Expiry date: Mar 4, 2040

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2090/0811
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An apparatus includes a body, a shaft extending distally from the body, a motor, a stapling assembly disposed at a distal end of the shaft, and a timer circuit operatively coupled to the motor and the firing actuator. The body includes a firing actuator and the motor is configured to activate in response to a firing actuation of the firing actuator. The motor is further configured to deactivate after a first predetermined time period subsequent to the firing actuation. The stapling assembly is configured to selectively move from an open position to a closed position to clamp tissue and is operable to drive a plurality of staples into the clamped tissue in response to activation of the motor. The timer circuit is configured to activate a timer in response to the firing actuation. The timer is configured to run for a second predetermined time period. The timer circuit is configured to ensure deactivation of the motor upon expiration of the second predetermined time period.