Linear stapling mechanism with cutting means

US5332142A · kind A · utility

Assignee

• Ethicon, Inc. · US

Inventors

• Stephen C. Robinson · Olathe, US
• Todd J. Olson · Loveland, US
• Dan Meiser · Bowling Green, US
• Gary Steed · Cleves, US
• Eric C. Huffman · Lowell, US
• Matthew Otten · Cincinnati, US
• Ronald VanOverloop · Sharonville, US
• Darrel M. Powell · Cincinnati, US
• Thomas G. Knodell, Jr. · Loveland, US
• Edward A. Rhad · Lancaster, US
• Ralph Chen · Bothell, US
• Robert G. Cook · Mason, US

Key dates

• Filing date: Jun 24, 1993
• Grant date: Jul 26, 1994
• Expiry date: Jun 24, 2013

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2090/0814
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A stapler mechanism is described which contains a stapling assembly, and anvil assembly, firing means and knife means. These means are activated by a firing trigger. The anvil assembly is closed upon the stapling assembly by means of a closure trigger. The firing trigger is inoperable until the closure trigger has been activated. Another mechanism in the stapler is capable of locking the closure trigger after use so it does not spring open inadvertently before actuation of the firing trigger. Additionally, the stapler mechanism allows forward motion of both triggers and also is capable of allowing reverse motion of the closure trigger to open the mechanism. Furthermore, the stapler mechanism contains means for obstructing the flow of insufflation gasses or bodily fluid from the surgical site through the instrument during endoscopic surgery.