Latch to prevent back-driving of circular surgical stapler

US11051819B2 · kind B2 · utility

Assignee

• Cilag GmbH International · CH

Inventors

• Gregory J. Bakos · Mason, US
• Michael A. Jacobs · Cockeysville, US
• Michael J. Stokes · Cincinnati, US
• Gregory G. Scott · Cincinnati, US
• Disha V. Labhasetwar · Cincinnati, US
• Nicholas M. Morgan · West Chester, US

Key dates

• Filing date: Oct 15, 2018
• Grant date: Jul 6, 2021
• Expiry date: Apr 10, 2039

Classification

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

Abstract

An apparatus includes a handle assembly having a body, a shaft assembly having an outer tubular member extending distally from the body, an end effector, an anvil, and a trocar latch assembly. The end effector includes a staple deck fixed relative to the outer tubular member, a staple driver that can actuate relative to the staple deck between an unfired position and a fired position, and a trocar that can actuate relative to the staple deck and the staple driver, the anvil can couple with trocar to move relative to the staple deck to define a gap distance. The trocar latch assembly includes a locking body that can actuate between an unlocked configuration and a locked configuration in response to the staple driver actuating between the unfired position and the fired position. The locking body can selective fix the trocar relative to the staple deck in the locked position.