Surgical instrument having a multiple rate directional switching mechanism

• US 8,534,528 B2
• Filed: 03/01/2011
• Issued: 09/17/2013
• Est. Priority Date: 06/04/2007
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Inventors: Shelton, Frederick E. IV
• Primary Examiner(s): Lopez, Michelle
• Application Number:
  US13/037,409
• Publication Number:
  US 20110155786A1
• Time in Patent Office: 931 Days
• Field of Search: 227/175.1, 227/176.1, 227/180.1, 227/178.1
• US Class Current: 227/178.1
• CPC Class Codes: A61B 17/07207 the staples being applied sequentially
• CPC Class Codes: A61B 2017/00212 using remote controls
• CPC Class Codes: A61B 2017/00367 Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
• CPC Class Codes: A61B 2017/07285 characterised by its cutter
• CPC Class Codes: A61B 2017/2923 Toothed members, e.g. rack and pinion
• CPC Class Codes: A61B 2017/2925 Pistol grips
• CPC Class Codes: A61B 2090/0811 for the position of a particular part of an instrument with respect to the rest of the instrument, e.g. position of the anvil of a stapling instrument
• CPC Class Codes: F04C 2270/0421 Controlled or regulated

Abstract

A surgical instrument having a remotely controllable user interface, and a firing drive configured to generate a rotary firing motion upon a first actuation of the remotely controllable user interface and a rotary refraction motion upon an other actuation of remotely controllable user interface. The instrument is such that when the remotely controllable user interface operates a first drive member, the first actuation advances a cutting member a first distance, wherein, when the remotely controllable user interface operates a second drive member, the other actuation retracts the cutting member a second distance, and wherein the second distance is greater than the first distance.

Claims

1. A surgical instrument, comprising:

a remotely controllable user interface;

a firing drive configured to generate a rotary firing motion upon a first actuation of said remotely controllable user interface and a rotary retraction motion upon another actuation of remotely controllable user interface;

a first drive member, wherein said remotely controllable user interface is selectively engageable with said first drive member; and

a second drive member, wherein said remotely controllable user interface is selectively engageable with said second drive member;

an elongate shaft assembly operably engaged with said first drive member and said second drive member; and

an end effector coupled to said elongate shaft assembly, said end effector comprising;

an elongate channel configured to operably support a staple cartridge therein;

an anvil movably coupled to said elongate channel; and

a cutting member operably supported within said elongate channel, wherein said cutting member is operably engaged with said elongate shaft assembly, wherein, when said remotely controllable user interface operates said first drive member, said first actuation advances said cutting member a first distance, wherein, when said remotely controllable user interface operates said second drive member, said other actuation retracts said cutting member a second distance, and wherein said second distance is greater than said first distance.