A surgical instrument for applying tacks to tissue includes a handle assembly, an elongated portion, an outer tube, an end effector, a rotation assembly, and a rotation-limiting structure. The rotation assembly is configured to rotate at least a portion of the outer tube about a first longitudinal axis and with respect to the handle assembly. The rotation assembly includes a rotation knob rotationally fixed to a proximal portion of the outer tube. The rotation-limiting structure is disposed in mechanical cooperation with at least one of the rotation assembly and the handle assembly, and is configured to limit an amount of rotation of the outer tube with respect to the handle assembly.

Embodiments of a surgical instrument including an actuation lockout system as well as its method of use are disclosed. In one embodiment, a surgical instrument includes a trigger and a driveshaft coupled to the trigger such that actuation of the trigger causes the driveshaft to move from a first position to a second position, thereby resulting in deployment of a surgical fastener. An actuation lockout system restrains distal movement of the driveshaft until a force greater than or equal to a threshold force is applied to the trigger.

A surgical instrument having an end effector mounted on the end of an elongate shaft extending from a handle is described, the shaft and end effector being rotatable with respect to the housing, to allow different rotational orientations of the end effector to be attained without rotating the whole instrument. To provide for control over the degree of rotation, shaft rotation control elements are provided to give rotation or torsion control. The shaft rotation control elements may be located at several different longitudinal positions along the shaft. Alternatively, rotation control elements in the form of mutually co-operating stops may be provided elsewhere, such as in a rotatable shaft support member at the distal end of the handle. In other embodiments rotation control stops are provided on both elements, thus providing for effective rotation control, which has a high quality feel to the user.

A surgical instrument has an end effector disposed on an elongate shaft end, the shaft projecting from a handle. The end effector grasps, cuts, and seals and/or coagulates tissue, and one of the operations is controlled by a rotatable drive shaft contained within the elongate shaft. The drive shaft moves longitudinally within the elongate shaft to move the end effector between a first and second condition. The instrument may have a further component such as a cutting blade arranged to move longitudinally within the drive shaft. The drive shaft is provided with apertures so as to reduce the surface area of the drive shaft and hence the friction between either the drive shaft and the elongate shaft and/or the drive shaft and the cutting blade, whilst at the same time providing channels through the drive shaft through which fluid can drain.

A surgical instrument has an end effector on the end of an elongate shaft extending from a handle. The end-effector has different operations, including grasping, cutting, and sealing and/or coagulating tissue, and one operation is controlled by a switch on the handle proximal end upper surface. The switch is connected to the end-effector to deliver a current to a component in the end-effector. The electrical wire assemblies pass through respective pockets/chambers formed within the handle, an electrical connector contained within each chamber for connecting wires extending from electrodes on the end-effector to wires extending through the handle and on connecting to an electrosurgical generator. The pockets provision within which connectors are contained, one per pocket, prevents insulation damage to wires by connectors, as they are contained within the pockets. The pockets provision pockets side-by-side provides large separation between two connectors, so it is hard for liquid to short the connectors.

An improved surgical instrument having an end effector mounted on the end of an elongate shaft extending from a handle. The end-effector has different operations, including grasping, cutting, and sealing and/or coagulating tissue, and one of the operations is controlled by a drive handle mechanism. The drive handle mechanism includes an actuator, a drive shaft and a spring assembly for transferring movement of the actuator to the drive shaft, which in turn controls the end effector. The drive handle mechanism limits the amount of force transferred from the drive handle mechanism to the end effector, preventing damage to the tissue. As the actuator is operated, the spring assembly transfers the movement of the actuator to the drive shaft and the end effector. At the same time, the spring assembly compresses to absorb some of the force applied. Such configuration prevents the tissue being unintentionally damaged by the end effector.

The application relates to a medical instrument with a hollow shaft, at the proximal end a handle is arranged, and at the distal end a tool with two jaw parts is arranged, of which at least one jaw part is pivotable, wherein the distal end is configured as a tool tip that can be deflected, and the tool tip is rotatable, wherein the rotation of the tool tip is effected via a first actuation element which is operatively connected at the proximal end to the handle, and wherein the deflection of the tool tip is effected via a second actuation element which is operatively connected to the handle, and wherein the at least one pivotable jaw part is adjustable between a closed position and an open position via a pull/push element. The pull/push element is mounted eccentrically in the tool tip and parallel to the longitudinal axis.

A treatment tool includes an long member; a treatment portion rotatable about a longitudinal axis of the long member; a twisting wire one end of which is connected to the treatment portion, the other end extending toward a proximal end side of the long member; an operating portion, at the proximal end side, that includes a body fixed to the long member, and an operating member configured to rotate around and move along the axis; and a mechanism configured to couple the operating member with the wire and convert a rotation of the operating member into traction of the wire. The body includes a portion configured to come into contact with the operating member to prevent the rotation in a case where the operating member is urged in a direction toward a distal end side of the long member together with the mechanism by a restoring force of the wire.

An endoscopic instrument is provided and includes a housing including an elongated shaft assembly extending distally therefrom. The elongated shaft assembly includes inner and outer shaft members. The inner and outer shaft members are removably coupled to the housing and the outer shaft member is movable with respect to the inner shaft member. An end effector is operably supported at the distal end of the outer shaft member and includes a pair of jaw members configured for treating tissue. A bushing operably couples to the inner and outer shaft members of the shaft assembly and selectively and releasably couples to the housing. The bushing includes one or more mechanical interfaces configured to engage one or more slots defined through the inner shaft member and one or more slots defined through the outer shaft member to release the inner and outer shaft members from the housing.

An adapter assembly for operably connecting an end effector to an electromechanical surgical instrument includes a drive transfer assembly, a drive member, and a first pusher assembly. The drive transfer assembly includes first and second rotatable shafts. The drive member is operably connected to the first rotatable shaft for transferring rotational motion from the first rotatable shaft to effect a first function and the first pusher assembly is operably connected to the second rotatable shaft for converting rotational motion from the second rotatable shaft to longitudinal movement to effect a second function. The first pusher assembly includes a brake member for rotationally locking the drive member relative to the first pusher assembly.