Dual lever to reduce force to fire in circular surgical stapler

US11134952B2 · kind B2 · utility

Assignee

• Cilag GmbH International · CH

Inventors

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

Key dates

• Filing date: Oct 15, 2018
• Grant date: Oct 5, 2021
• Expiry date: Apr 21, 2039

Classification

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

Abstract

An apparatus includes a body assembly with a handle and a shaft portion, an end effector with a staple deck fixed to the shaft portion, an anvil, and a firing assembly. The end effector further includes a trocar and a staple driver both configured to actuate relative to the staple deck. The staple driver can actuate a distance between an unfired position and a fired position. The trocar can couple with the anvil to define a gap distance. The firing assembly includes a trigger pivotably coupled with the body assembly via a first pivot, a driver actuator configured to actuate the staple driver, and a linkage assembly pivotably coupled with the trigger via a second pivot and the driver actuator. Where the second pivot is proximal relative to the first pivot. The linkage assembly can drive the driver actuator is response to the trigger pivoting about the first pivot.