Endoscopic instrument

US9161769B2 · kind B2 · utility

Assignee

• Covidien LP · US

Inventors

• Robert B. Stoddard · Steamboat Springs, US
• James S. Cunningham · Boulder, US
• William J. Dickhans · Longmont, US
• Russell D. Hempstead · Lafayette, US
• Eric R. Larson · Boulder, US
• Duane E. Kerr · Loveland, US
• William H. Nau, Jr. · Longmont, US
• Anthony B. Ross · Boulder, US
• John J. Kappus · Denver, US

Key dates

• Filing date: Mar 15, 2013
• Grant date: Oct 20, 2015
• Expiry date: Dec 7, 2033

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2018/00994
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An endoscopic instrument is provided and includes a housing including an elongated shaft assembly extending distally therefrom. The elongated shaft assembly includes inner and outer shaft members. The inner and outer shaft members are removably coupled to the housing and the outer shaft member is movable with respect to the inner shaft member. An end effector is operably supported at the distal end of the outer shaft member and includes a pair of jaw members configured for treating tissue. A bushing operably couples to the inner and outer shaft members of the shaft assembly and selectively and releasably couples to the housing. The bushing includes one or more mechanical interfaces configured to engage one or more slots defined through the inner shaft member and one or more slots defined through the outer shaft member to release the inner and outer shaft members from the housing.