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: An endoscopic forceps is provided and includes a housing having a handle assembly including a movable handle having a mechanical interface disposed thereon. An end effector assembly connected to a distal end of the shaft includes a pair of first and second jaw members movable relative to one another from an open to a clamping position. A drive assembly includes a resilient member. A lock assembly is pivotably coupled to the housing and in operative communication with the movable handle. The lock assembly is movable with the handle assembly. The mechanical interface moves along the lock assembly when the movable handle is moved proximally causing the lock assembly to rotate about the pivot point and into communication with the resilient member such that the resilient member is prevented from moving distally against the bias provided therefrom such that the first and second jaw members remain in the clamping position.

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: A forceps includes a housing having a shaft extending therefrom. The shaft has an end effector assembly that defines a longitudinal axis therethrough. The end effector assembly includes first and second jaw members disposed in opposed relation and moveable from a first, open position to a second, closed position for grasping tissue therebetween and a knife. One or more jaw members include knife blade channels defined therein. Each knife blade channel includes a polygonal longitudinal cross-section defined therein. The knife includes a knife edge and a knife base. The knife base includes a corresponding polygonal longitudinal cross-section. The knife is configured to translate through the knife blade channels and the knife base is configured to slidingly engage the knife base channel having the polygonal cross section upon translation of the knife. In embodiments, the knife blade channel and the knife base have a T-shaped longitudinal cross-section.

Abstract: A modular shaft assembly for use with a variety of different endoscopic forceps each having a housing includes a handle assembly and one or more moveable handles. The modular shaft assembly also includes a shaft having proximal and distal ends and an end effector assembly including a pair of jaw members attached to the distal end thereof. The shaft and a universal drive assembly are attached at the proximal end of the shaft. The universal drive assembly is operably engageable with the handle assemblies of the variety of different endoscopic forceps such that actuation of the one or more movable handles of any of the variety of different forceps causes the universal drive assembly to actuate the jaw members to move between an open position wherein the jaw members are disposed in spaced relation relative to one another to a closed position for grasping tissue therebetween.

Abstract: An endoscopic forceps is provided and includes a housing having a handle assembly including a movable handle having a mechanical interface disposed thereon. An end effector assembly connected to a distal end of the shaft includes a pair of first and second jaw members movable relative to one another from an open to a clamping position. A drive assembly includes a resilient member. A lock assembly is pivotably coupled to the housing and in operative communication with the movable handle. The lock assembly is movable with the handle assembly. The mechanical interface moves along the lock assembly when the movable handle is moved proximally causing the lock assembly to rotate about the pivot point and into communication with the resilient member such that the resilient member is prevented from moving distally against the bias provided therefrom such that the first and second jaw members remain in the clamping position.

Abstract: A forceps includes a housing having a shaft extending therefrom. The shaft has an end effector assembly that defines a longitudinal axis therethrough. The end effector assembly includes first and second jaw members disposed in opposed relation and moveable from a first, open position to a second, closed position for grasping tissue therebetween and a knife. One or more jaw members include knife blade channels defined therein. Each knife blade channel includes a polygonal longitudinal cross-section defined therein. The knife includes a knife edge and a knife base. The knife base includes a corresponding polygonal longitudinal cross-section. The knife is configured to translate through the knife blade channels and the knife base is configured to slidingly engage the knife base channel having the polygonal cross section upon translation of the knife. In embodiments, the knife blade channel and the knife base have a T-shaped longitudinal cross-section.