Clamping mechanisms for robotic surgical tools

US11622827B2 · kind B2 · utility

Assignee

• Cilag GmbH International · CH

Inventors

• Andrew T. Beckman · Cincinnati, US
• Charles J. Scheib · Loveland, US
• Travis Michael Schuh · Los Altos, US
• Benjamin D. Dickerson · Cincinnati, US
• Jason Alan Hill · Loveland, US
• Neil Markwardt · Redwood City, US

Key dates

• Filing date: Jun 18, 2020
• Grant date: Apr 11, 2023
• Expiry date: Mar 1, 2041

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2090/066
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A robotic surgical tool includes a drive housing having first and second ends, at least one spline extending between the first and second ends and including a drive gear that rotates with rotation of the spline, and a carriage mounted to the spline. A closure tube extends from the carriage through the first end and has an end effector arranged at a distal end. An activating mechanism is housed in the carriage and includes a driven gear coupled to the drive gear such that rotation of the drive gear rotates the driven gear, and a carrier arranged at a proximal end of the closure tube and coupled to the driven gear such that rotation of the driven gear moves the carrier and the closure tube axially along a longitudinal axis of the closure tube. Moving the closure tube along the longitudinal axis closes or opens end effector jaws.