| 主权项 |
1. An apparatus for operating on tissue, the apparatus comprising:
(a) a body; (b) a shaft assembly extending distally from the body, wherein the shaft assembly defines a longitudinal axis; and (c) an end effector in communication with the shaft assembly, wherein the end effector comprises:
(i) a first jaw comprising a hinge seat,(ii) a second jaw comprising:
(A) a proximal portion,(B) a distal portion, and(C) a movable hinge configured to engage the hinge seat, wherein the second jaw is moveable relative to the first jaw between a first position, a second position, and a third position, and(iii) a firing beam comprising a first engagement member, wherein the firing beam is operable to translate relative to the first jaw and the second jaw,wherein the second jaw in the first position is open relative to the first jaw,wherein the second jaw in the second position is positioned such that the distal portion is closer to the first jaw than the proximal portion, wherein the first engagement member is configured to drive against a portion of the second jaw such that the moveable hinge moves from the hinge seat perpendicularly or obliquely relative to the longitudinal axis of the shaft assembly as the second jaw moves from the first position to the second position,wherein the second jaw in the third position is parallel to the first jaw. |
