Electrosurgical instrument with a knife blade lockout mechanism

摘要

An electrosurgical forceps is provided with a shaft that extends from a housing of the electrosurgical forceps. An end effector assembly operably coupled to the shaft includes a pair of first and second jaw members. One or both of the first and second jaw members is movable from an open configuration, to a clamping configuration. A knife blade assembly includes a knife blade translatable within the first and second jaw members. A knife blade lockout mechanism is in operative communication with the knife blade assembly and includes an elongated cam slot with a cam pin translatable therein from a distal end of the elongated cam slot corresponding to the knife blade lockout mechanism engaged with the knife blade assembly, to a proximal position corresponding to the knife blade lockout mechanism disengaged from the knife blade assembly.

主权项

1. An electrosurgical forceps, comprising:
a housing having a shaft extending therefrom; an end effector assembly operably coupled to a distal end of the shaft and including a pair of first and second jaw members, at least one of the first and second jaw members movable from an open configuration for positioning tissue therebetween, to a clamping configuration for grasping tissue therebetween; a knife blade assembly including a knife blade translatable within the first and second jaw members when the first and second jaw members are in the clamping configuration; and a knife blade lockout mechanism supported within the shaft and in operative communication with the knife blade assembly, the knife blade lockout mechanism including an elongated cam slot with a cam pin translatable therein from a distal end of the elongated cam slot corresponding to the first and second jaw members being in the open configuration and the knife blade lockout mechanism engaged with the knife blade assembly, to a proximal end of the elongated cam slot corresponding to the first and second jaw members being in the clamping configuration and the knife blade lockout mechanism disengaged from the knife blade assembly.