An ultrasonic instrument comprising:</claim-text> an outer tube defining a longitudinal axis and having a proximal end and a distal end; an actuation member positioned within the outer tube; a vibration coupler positioned within the outer tube, the tion coupler having a distal end and a proximal end; a jaw member extending from the distal end of the vibration coupler; a clamp pivotally mounted adjacent the distal end of the outer tube, the clamp being movable in relation to the jaw member between open and clamped positions, the clamp including a camming member which operatively engages the actuation member such that movement of the actuation member pivots the clamp between the open and clamped positions. view more

An ultrasonic instrument according to claim 1, wherein the actuation member includes a slot for receiving the camming member of the clamp.

An ultrasonic instrument according to claim 1, further including a handle assembly, the proximal end of the outer tube being supported adjacent the handle assembly.

An ultrasonic instrument according to claim 9, further including a rotatable collar operatively associated with the vibration coupler, the clamp and the jaw member such that rotation of the vibration coupler causes corresponding rotation of the clamp and the jaw member. view more

An ultrasonic instrument according to claim 10, wherein the clamp and the jaw member are rotatable about the longitudinal axis of the outer tube.

An ultrasonic instrument according to claim 10, wherein the rotatable collar is positioned adjacent the handle assembly.

An ultrasonic instrument according to claim 9, further including a transducer removably supported on the handle assembly.

An ultrasonic instrument according to claim 13, wherein the transducer includes a transducer horn adapted to engage a proximal end of the vibration coupler.

An ultrasonic instrument according to claim 1, wherein the outer tube is dimensioned to be received within a 5 mm trocar assembly.

An ultrasonic instrument according to claim 1, wherein the clamp includes at least one tissue receiving stop which is positioned adjacent the jaw member.

An ultrasonic instrument according to claim 23, wherein the jaw member includes a blade surface having a proximal end and a distal end, the at least one tissue receiving stop being positioned adjacent the proximal end of the blade surface.

An ultrasonic instrument according to claim 1, wherein the clamp is pivotally mounted on the distal end of the outer tube.

An ultrasonic instrument comprising:</claim-text> a) a vibration coupler; b) a cutting jaw operatively connected to the vibration coupler; c) a clamp member supported adjacent to the cutting jaw, the clamp member being moveable in relation to the ng jaw between an open position in which at least a portion of the clamp member is spaced from the cutting jaw and a closed position in which the clamp member and the cutting jaw are in substantially juxtaposed alignment; and d) a rotatable member operatively associated with the vibration coupler, the clamp member and the cutting jaw, the rotatable member being rotatable to cause corresponding rotation of the clamp member and cutting jaw about a longitudinal axis of the instrument. view more

An ultrasonic instrument according to claim 1, wherein the clamp member includes a pair of tissue engaging stops.

An ultrasonic instrument comprising:</claim-text> a) a handle assembly; b) a vibration coupler supported by and extending distally from the handle assembly; c) a cutting jaw having a cutting surface operatively connected to the vibration coupler; d) mp member supported adjacent to the cutting jaw, the clamp member and the cutting jaw defining a tissue receiving area, the clamp member being moveable between open and closed positions in relation to the cutting jaw and having a tissue engaging stop positioned to engage tissue and prevent positioning of tissue beyond the proximal end of the cutting surface of the cutting jaw. view more

An ultrasonic instrument according to claim 7, further including an actuator tube slidably positioned about the vibration coupler, a distal end of the actuator tube including a cam slot configured to receive cam members formed on the clamp member, the actuator tube being moveable between advanced and retracted positions about the vibration coupler in response to actuation of the handle assembly to effect movement of the clamp member between the open and closed positions. view more

An ultrasonic instrument according to claim 8, wherein the handle assembly includes a stationary handle and a moveable handle, the moveable handle being operably connected to a proximal end of the actuator tube.

An ultrasonic instrument according to claim 9, further including a coupling member, the coupling member interconnecting the actuator tube and the moveable handle.

An ultrasonic instrument according to claim 10, wherein the coupling member includes a swivel member, the swivel member being positioned to permit rotation of the coupling member in relation to the moveable handle.

An ultrasonic instrument according to claim 11, wherein the coupling member is operably connected to a rotatable knob positioned adjacent the handle assembly, the rotatable knob being rotatably secured to the handle assembly such that rotation of the rotatable knob in relation to the handle assembly effects corresponding rotation of the coupling member and the clamp member. view more

An ultrasonic instrument according to claim 12, wherein the vibration coupler is rotatably fixed to the rotatable knob such that rotation of the rotatable knob also effects corresponding rotation of the vibration coupler and the cutting jaw.

An ultrasonic instrument according to claim 8, further including an outer tube positioned about the actuator tube, the clamp member being pivotally connected to the outer tube.

An ultrasonic surgical instrument for cutting body tissue comprising: a housing including a first handle and a second handle movable with respect to the first handle; an elongated outer tube extending from the housing, the elongated outer tube defining a longitudinal axis and having proximal and distal portions and a lumen extending therethrough; a clamp member extending distally of the distal portion of the outer tube and pivotable between an open position and a clamped position by movement of the second handle between first and second positions, the clamp member including a tissue clamping surface; an elongated actuator tube defining a central longitudinal axis, having a lumen extending therethrough and being positioned within the lumen of the outer tube, the actuator tube being longitudinally slidable within the lumen of the outer tube to pivot the clamp member between the open and clamped positions; an elongated vibration coupler defining a longitudinal axis and positioned within the lumen of the actuator tube, the vibration coupler adapted to be operably connected to an ultrasonic generator for vibration in response to actuation of the ultrasonic generator and including a blade member extending therefrom, the blade member including a tissue contacting surface, the clamp member pivoting with respect to the tissue contacting surface to clamp tissue between the clamping surface of the clamp member and the tissue contacting surface of the blade member; and a rotation knob positioned adjacent the housing, the vibration coupler, outer tube and actuator tube being operatively connected to the rotation knob, the rotation knob rotatable to rotate the outer tube, actuator tube and vibration coupler about their respective longitudinal axes to change their orientation with respect to body tissue. view more

The surgical instrument of claim 1, wherein the clamp member includes a pair of pivot pins to pivot the clamp member between the open and clamped positions.

The surgical instrument of claim 1, further comprising a transducer removably connected to the housing.

The surgical instrument of claim 1, further comprising at least one ring positioned on the vibration coupler to seal the flow of fluids between the vibration coupler and the actuator tube.