SURGICAL INSTRUMENT HAVING A MULTI-LAYERED DRIVE BEAM,申请号EP20070839347-传众专利搜索

SURGICAL INSTRUMENT HAVING A MULTI-LAYERED DRIVE BEAM

申请公布号：EP2073718(B1)

申请号：EP20070839347

申请日期：2007.10.04

申请公布日期：2014.08.27

申请人：

COVIDIEN LP

发明人：SCIRICA, PAUL

分类号：A61B17/04

主分类号：A61B17/04

摘要：A surgical instrument, comprising: a handle portion; a body portion extending distally from the handle portion and defining a first longitudinal axis; a movable handle disposed on the handle portion and in mechanical cooperation with a drive member; a tool assembly including an anvil, a cartridge assembly and a contact surface, the tool assembly being supported adjacent a distal end of the body portion; a drive beam including a plurality of layers, at least one layer having a proximal engagement portion disposed adjacent a proximal end thereof and being configured to engage a portion of the drive member; a closure apparatus disposed adjacent a distal end of the drive beam being configured to engage the contact surface of the tool assembly, whereby at least a partial actuation of the movable handle moves the closure apparatus distally into engagement with the contact surface to approximate the anvil and the cartridge assembly, the closure apparatus including a cutting surface thereon, a cross-section of the closure apparatus being generally I-shaped; and the drive beam including between four layers and six layers, at least one layer of the drive beam being made of stainless steel, wherein each of the plurality of layers of the drive beam include a plurality of cutouts disposed therethrough, the drive beam being part of a disposable loading unit, and wherein the closure apparatus and/or the contact surface includes a plastic surface or a plastic coating.