Anvil assemblies with collapsible frames for circular staplers

US8978955B2 · kind B2 · utility

Assignee

• Ethicon Endo-Surgery, Inc. · US

Inventors

• Taylor W. Aronhalt · Loveland, US
• Frederick E. Shelton, IV · Hillsboro, US
• Kreena R. Modi · Akron, US
• Christopher J. Schall · Cincinnati, US
• Joseph E. Young · Loveland, US
• Barry C. Worrell · Maineville, US
• Jerome R. Morgan · Cincinnati, US
• William B. Weisenburgh, II · Maineville, US
• Christopher J. Hess · Cincinnati, US
• Emily A. Heeb · Cincinnati, US

Key dates

• Filing date: Jul 13, 2011
• Grant date: Mar 17, 2015
• Expiry date: Jun 20, 2033

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04C2270/0421
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Circular stapling instruments and anvil assemblies. The anvil assemblies may have collapsible anvil support members that may be inserted through an opening in a patient and then expanded to be attached to an anvil plate assembly that has a staple-forming surface thereon. The anvil support member is attachable to the anvil plate assembly in such a way that when the anvil assembly is coupled to the stapling head of a circular stapler, the staple-forming surface is in substantial registry with the staples supported in the stapling head. A variety of different anvil support members and anvil plate assemblies are disclosed.