公开(公告)号：US09113941B2

公开(公告)日：2015-08-25

申请号：US13860324

申请日：2013-04-10

Applicant: Covidien LP

Inventor： John J. Kappus ,  Thomas J. Gerhardt, Jr. ,  Wayne Siebrecht ,  Larry Johnson

IPC: A61B18/12 ,  A61B17/295 ,  A61B18/14 ,  A61B17/32 ,  A61B18/00

CPC classification number: A61B17/295 ,  A61B17/32 ,  A61B18/1445 ,  A61B18/1447 ,  A61B2018/0063 ,  A61B2018/1412 ,  A61B2018/1455

Abstract: An endoscopic forceps includes a housing having a shaft attached thereto that supports a pair of jaws disposed at a distal end thereof. A drive assembly having a drive shaft with a proximal end is operable to move the jaws relative to one another from an open to closed positions. A knife assembly is operable to advance a knife through tissue disposed between the jaws and includes a flange disposed thereon. A knife lockout is included that has a flange configured to engage the proximal end of the drive shaft and a lockout arm configured to engage the flange of the knife assembly to prevent movement thereof. Movement of the jaws to the closed position causes the proximal end of the drive shaft to engage the flange on the lockout which causes the lockout arm to disengage the flange on the knife assembly to permit advancement of the knife.

Abstract translation: 内窥镜钳包括具有附接到其上的轴的壳体，其支撑设置在其远端处的一对钳口。 具有具有近端的驱动轴的驱动组件可操作以使夹爪相对于彼此从打开位置移动到关闭位置。 刀组件可操作以将刀推进设置在夹爪之间的组织，并且包括设置在其上的凸缘。 包括刀锁，其具有被配置为接合驱动轴的近端的凸缘和构造成接合刀组件的凸缘以防止其移动的锁定臂。 夹爪移动到关闭位置使得驱动轴的近端接合锁定件上的凸缘，这导致锁定臂使刀组件上的凸缘脱离以允许刀的前进。

公开(公告)号：US09974604B2

公开(公告)日：2018-05-22

申请号：US14924232

申请日：2015-10-27

Applicant: COVIDIEN LP

Inventor： Eric R. Larson ,  John J. Kappus ,  Wayne Siebrecht

IPC: A61B17/00 ,  A61B18/14 ,  A61B18/00 ,  A61B18/12 ,  A61B90/00

CPC classification number: A61B18/1445 ,  A61B2018/00309 ,  A61B2018/1226 ,  A61B2018/1455 ,  A61B2090/0811

Abstract: A surgical instrument includes a handle movable between first and second positions for transitioning an end effector assembly between states and to a third position for returning the handle. A latch arm coupled to the handle includes one or more engagement members. A latch block defines a guide track having a latching path configured to guide the engagement member(s) therealong, an engagement portion configured to engage the engagement member(s) to latch the handle in the second position, and a return path configured to guide the engagement member(s) therealong. A first step interdisposed between the latching path and engagement portion guides the engagement member(s) into engagement with the engagement portion and inhibits the engagement member(s) from returning along the latching path. A second step interdisposed between the engagement portion and the return path guides the engagement member(s) along the return path and inhibits the engagement member(s) from re-engaging the engagement portion.