Surgical stapling device

• US 7,407,076 B2
• Filed: 10/31/2006
• Issued: 08/05/2008
• Est. Priority Date: 10/13/2000
• Status: Expired due to Fees

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Marczyk, Stanislaw, Racenet, David C., Wells, Timothy N.
• Primary Examiner(s): Truong; Thanh K.
• Assistant Examiner(s): CHUKWURAH, NATHANIEL C
• Application Number:
  US11/590,458
• Publication Number:
  US 20070095877A1
• Time in Patent Office: 644 Days
• Field of Search: 227/19, 227/175.1, 227/176.1, 227/179.1, 227/180.1, 227/181.1
• US Class Current: 227/175.1
• CPC Class Codes: A61B 17/072 for applying a row of staples in a single action , e.g. the staples being applied simultaneously
• 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 2017/0038 Simultaneous actuation of two tools by pushing one button or the like
• CPC Class Codes: A61B 2017/07214 Stapler heads
• CPC Class Codes: A61B 2017/07264 characterised by its staple forming cavities, e.g. geometry or material
• CPC Class Codes: A61B 2017/2925 Pistol grips
• CPC Class Codes: A61B 2017/2945 Curved jaws
• CPC Class Codes: A61B 2017/320052 Guides for cutting instruments by marking A61B2090/395
• 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

Abstract

A surgical stapling device for applying an array of surgical staples to tissue is provided. The stapling device includes an approximation mechanism for moving a cartridge assembly and an anvil assembly between spaced and approximated positions and a firing mechanism for ejecting the array of staples from the cartridge assembly. A single trigger is operable to effect approximation and firing of the device. The device also includes an alignment pin assembly which can be selectively manually or automatically advanced. The anvil assembly includes a stiffener plate which allows the device to have a reduced head portion profile.

Claims

1. A surgical stapling device comprising:

a body having a pivotable trigger;

an approximation mechanism including at least one clamp slide member, the approximation mechanism operably associated with the trigger such that movement of the trigger from a non-compressed position to a compressed position effects movement of the at least one clamp slide member distally from a retracted position to an advanced position;

a pawl member positioned adjacent the trigger and positioned to retain the trigger in the compressed position subsequent to advancement of a thrust bar;

a release mechanism including a release button and a release member, wherein the release button is positioned to effect movement of the at least one clamp slide member from the advanced position to the retracted position and the release member is positioned to engage the pawl member to facilitate movement of the trigger from the compressed position to the non-compressed position; and

a pin pusher, the pin pusher having a pair of legs, each leg having a contoured profile and a rib extending therefrom, wherein the pin pusher has a reduced mass, thereby requiring a reduced actuation force to advance the pin pusher distally.

2. The surgical stapling device of claim 1, wherein the release mechanism includes a biasing member that urges the release button towards a first position.