Systems and methods for preventing tissue migration in surgical staplers

US11944503B2 · kind B2 · utility

Assignee

• STANDARD BARIATRICS, INC. · US

Inventors

• Adam R. Dunki-Jacobs · Cincinnati, US
• Mark S. Ortiz · Milford, US
• Jonathan R. Thompson · Cincinnati, US
• Richard P. Nuchols · Williamsburg, US
• Caleb J. Hayward · Goshen, US
• Robert T. Means, III · Cincinnati, US
• Saylan J. Lukas · Cincinnati, US

Key dates

• Filing date: Dec 21, 2022
• Grant date: Apr 2, 2024
• Expiry date: Dec 21, 2042

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2090/036
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A surgical instrument including a system for stopping a beam of the surgical instrument from impacting a distal pin when reversing a knife is disclosed. A knife assembly of the surgical instrument comprises the knife, the beam, and a firing nut. A firing lead screw can drive the firing nut distally and proximally. A firing screw compression spring extends along the firing lead screw and applies a load proximally on the firing nut when the firing nut is driven toward a distal end of the firing lead screw.