US 7,617,961 B2Granted

Tool assembly for surgical stapling device

AssigneeTyco Healthcare Group LP

InventorFrank J. Viola

Life of this patent

Estimating the term…

Loading patent…

Abstract

The present invention includes a tool assembly with a first jaw movable in relation to a second jaw between a spaced position and an approximated position. An approximation member is movable in relation to the first jaw to effect movement of the first and second jaws from the spaced position to the approximated position. A cam channel is configured to approximate the distal ends of the first and second jaws prior to approximation of the proximal ends of the first and second jaws. An articulation and firing actuator includes a flexible band having first and second end portions, wherein movement of either the first or the second end portion of the band effects pivoting of the tool assembly, and movement of the both end portions of the band, simultaneously, effects movement of a dynamic clamping member to eject staples from a cartridge assembly.

Claims15

Dependent claims

A tool assembly comprising:

a pair of jaws including a first jaw and a second jaw, each of the jaws having a proximal end and a distal end, the first and second jaws being movable in relation to the other;
first and second cam followers supported on the first jaw;
and
an approximation member including at least one cam surface positioned to engage the first and second cam followers, the approximation member being movable through an actuating stroke to move the at least one cam surface in relation to the first and second cam followers;
wherein the approximation member is movable to move the at least one cam surface in relation to the first and second cam followers to effect movement of the first jaw to approximate a distal end of the first jaw with the second jaw in a first portion of the actuating stroke, to subsequently move the distal end of the first jaw away from the second jaw in a second portion of the actuating stroke, and to subsequently bring together the first jaw and the second jaw in substantially parallel closure in a third portion of the actuating stroke.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/529,568Filed 6 Oct 2003 · us provisional application
Priority: 4 Oct 2002
Published: US 2006/0100644 A111 May 2006
Granted: 17 Nov 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

A61B 17/07207
For applying a row of staples in a single action, e.g. the staples being applied simultaneously: the staples being applied sequentially
A61B 2017/00367
Surgical instruments, devices or methods: details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation…
A61B 2017/07214
For applying a row of staples in a single action, e.g. the staples being applied simultaneously: stapler heads
A61B 2017/07271
Stapler heads: characterised by its cartridge