Aspects of the present disclosure include various ultrasonic surgical instruments. At least one disclosed surgical instrument includes a waveguide including a blade and a transducer base plate. The transducer base plate may be coupled to the waveguide to define a tapered joint at an interface between the waveguide and the transducer base plate. The transducer base plate may include first and second sides defining corresponding first and second flat faces configured to receive first and second piezoelectric elements. The first and second piezoelectric elements are configured to operate in a D31 mode.

A catheter device including an internal elongated and hollow body extending between a proximal end and a distal end along a longitudinal axis, the internal elongated and hollow body defining a longitudinal aperture that extends between the proximal and distal ends thereof, the longitudinal aperture being shaped and sized for receiving a guide wire therein, and at least one mechanical waveguide secured to the internal elongated and hollow body and extending longitudinally along at least a portion of the internal elongated and hollow body, with the at least one mechanical waveguide capable of propagating at least one mechanical wave therealong.

A vibrating body unit includes a vibration generator, a vibration transmitter and first amplitude enlarger. The vibration generator generates ultrasonic vibration whose amplitude has a predetermined correlation with a frequency. The vibration transmitter has a proximal end and a distal end while the vibration generator is attached from a proximal side, and transmits the ultrasonic vibration to a distal side in a longitudinal axis direction. At least one first amplitude enlarger is provided in the vibration transmitter, and enlarges the amplitude of the ultrasonic vibration at a first amplitude enlargement rate in a direction of transmission of the ultrasonic vibration, the first amplitude enlargement rate having a correlation with the frequency opposite to the predetermined correlation.

Disclosed is an ultrasonic surgical instrument comprising a transducer base plate, first and second piezoelectric elements positioned on opposite faces of the transducer base plate. The transducer base plate is coupled to a waveguide. The waveguide is electrically coupled to the first and second piezoelectric elements by a conductive adhesive. The first and second piezoelectric elements are electrically coupled to an ultrasonic signal generator through an electrode. A thermal conductor conducts thermal energy away from the first and second piezoelectric elements. Also disclosed is a method of fabricating such an ultrasonic surgical instrument.

A surgical instrument has an ultrasonic blade that connects to a distal end of an ultrasonic waveguide. A clamp arm assembly is moveable from an opened position for receiving a tissue, toward a closed position for clamping the tissue. A clamp arm actuator connected to the clamp arm assembly directs the clamp arm assembly from the opened position toward the closed position. An outer sheath surrounds at least a portion of the ultrasonic waveguide. The outer sheath includes a cover removably received against a sheath body, and a sheath securement feature able to detachably couple the cover to the sheath body such that the cover can be detached from the sheath body for accessing the ultrasonic waveguide within the outer sheath.

[Object] An object of the present technology is to provide a handheld instrument for endoscope surgery having an ultrasonic imaging function with a practicable spatial resolution. [Solving Means] A handheld instrument for endoscope surgery according to the present technology includes: a shaft; a jaw; a handle; a phased array ultrasonic sensor; and a signal wiring. The jaw is placed at one end of the shaft and has a holding function. The handle is placed at the other end of the shaft and includes an operation mechanism for operating the jaw. The phased array ultrasonic sensor is mounted on the jaw and has an imaging function. The signal wiring is provided to the shaft and connects the ultrasonic sensor and the handle.

A method of assembling an ultrasound catheter includes providing an elongated catheter body having a proximal end, a distal end, and at least one lumen extending longitudinally therethrough; coupling a proximal housing to the proximal end of the elongated catheter body, the proximal housing having a distal bore; inserting an ultrasound transmission member through the lumen of the catheter body; positioning a sonic connector on the proximal end of the ultrasound transmission member for connecting the ultrasound transmission member to a separate ultrasound generating device at a connection location, the sonic connector having a proximal section and a front portion, the proximal portion provided for connection to the separate ultrasound generating device; connecting the front portion of the sonic connector to the proximal end of the ultrasound transmission member; and retaining an absorber inside the distal bore of the proximal housing wherein the absorber substantially surrounds the ultrasound transmission member.

The treatment section integrally includes, on the distal side of a probe, a cortical bone abrasion portion which abrades a living body tissue or a bone among treated target parts by mechanical abrasion by ultrasonic vibration, and a cartilage abrasion portion which generates heat by ultrasonic vibration and abrades a cartilage among the treated target parts by dissolutive abrasion.

An apparatus includes a body, a shaft assembly, an end effector portion, a data storage component, a reader, and a use control. The shaft assembly extends distally from the body and includes a support portion. The end effector portion is configured to selectively couple with the support portion of the shaft assembly. The data storage component is associated with the end effector portion and contains data uniquely associated with the end effector portion. The reader is adapted to read the data from the data storage component. The use control is adapted to enable operation of the end effector portion if the data meets at least one usage parameter.

A treatment instrument which is used under an environment filled with an electrically conductive liquid includes a probe, a hollow sheath and an insulating member. The probe has a distal portion to chip a treatment target part by ultrasonic vibration and which allows the distal portion to function as one pole in a bipolar electrode. The sheath surrounds the probe. The insulating member covers the sheath except for a partial region on the distal side of the sheath. The partial region on the distal side of the sheath functions as the other pole in the bipolar electrode.