Various embodiments are direct to a surgical instrument comprising and end effector, an articulating shaft and an ultrasonic transducer assembly. The end effector may comprise an ultrasonic blade. The articulating shaft may extend proximally from the end effector along a longitudinal axis and may comprise a proximal shaft member and a distal shaft member pivotably coupled at an articulation joint. The ultrasonic transducer assembly may comprise an ultrasonic transducer acoustically coupled to the ultrasonic blade. The ultrasonic transducer assembly may be positioned distally from the articulation joint.

A surgical apparatus includes an end effector having an ultrasonic blade, a clamp arm, and a clamp pad. The end effector applies ultrasonic energy at the blade. The clamp arm pivots relative to the blade. The clamp pad is positioned on the clamp arm adjacent to the blade. The clamp arm includes a latching feature to retain the clamp pad relative to the clamp arm to prevent the clamp pad from moving laterally, longitudinally, and perpendicularly relative to the clamp arm.

A surgical instrument includes a shaft, an ultrasonic transducer, a waveguide acoustically coupled with the ultrasonic transducer and extending distally through the shaft, and an end effector arranged at a distal end of the shaft. The end effector includes an ultrasonic blade acoustically coupled with the waveguide, a clamp arm movable relative to the ultrasonic blade for clamping tissue, and an RF electrode operable to seal tissue with RF energy. The ultrasonic transducer is operable to drive the waveguide and the ultrasonic blade with ultrasonic energy. The surgical instrument further includes an ultrasonic electrical circuit operable to energize the ultrasonic transducer, and an RF electrical circuit operable to deliver RF energy to the RF electrode. A return path of the ultrasonic electrical circuit and a return path of the RF electrical circuit pass through a shared electrically conductive element.

An ultrasonic surgical instrument includes an elongated assembly releasably engagable with an ultrasonic transducer and including a waveguide having a blade at a distal end and a torque adapter towards a proximal end. Fixed and movable sleeves are disposed about the waveguide and support and operably couple to a jaw member at the respective distal ends thereof. A drive tube is fixed to the movable sleeve such that translation of the drive tube pivots the jaw member relative to the blade. A torque housing is slidably disposed about the drive tube, longitudinally fixed about the fixed sleeve, and fixedly about the torque adapter. A rotation knob is longitudinally fixed about the torque housing and operably coupled to the torque housing such that the torque housing and the rotation knob cooperate to define a torque wrench inhibit application of additional torque to the waveguide above a torque limit.

An ultrasonic surgical instrument comprises a cylindrical shaft and a blade at a distal or free end of the shaft, the blade being unitary and continuous with the shaft, without an intervening joint. The shaft has a longitudinal axis and the blade includes a flat or planar blade body with a proximal end eccentrically disposed relative to the shaft axis. Thus, the blade body or at least a proximal end portion thereof is disposed eccentrically relative to the shaft. The blade in its entirely may be inclined relative to the shaft axis or extend parallel thereto.

An ultrasonic transducer for an ultrasonic surgical instrument includes a proximal hub, a piezoelectric rod array including a plurality of piezoelectric rods spaced-apart from one another and disposed in parallel and longitudinally-extending orientation relative to one another, and a distal horn including a distal connector configured to engage a waveguide. The proximal hub and the distal horn are configured to engage one another to retain the piezoelectric rod array therebetween under compression.

A compact ultrasonic transducer for an ultrasonic surgical instrument includes a proximal casing defining a hollow interior and a piezoelectric rod array including a plurality of piezoelectric rods radially spaced-apart from one another and arranged in a longitudinally-oriented direction. The piezoelectric rod array is disposed within the hollow interior. The compact ultrasonic transducer further includes a distal horn including a distal connector configured to engage a waveguide. The distal horn is configured to engage the proximal casing to enclose the piezoelectric rod array within the hollow interior. An ultrasonic surgical instrument including the compact ultrasonic transducer is also provided.

An ultrasonic element comprises an ultrasonic transducer and a head or blade. The ultrasonic transducer is operable to convert electrical power into ultrasonic vibrations. The head or blade is in acoustic communication with the ultrasonic transducer such that the ultrasonic transducer is operable to drive the ultrasonic blade to vibrate ultrasonically. The head or blade has a curved distal face. The curved distal face defines a proximally extending concave curve. The transducer and head or blade may be driven using a control logic that is configured to cause the ultrasonic transducer to generate a first vibration set followed by a second vibration set. The first vibration set is configured to generate microbubbles in a fluid. The second vibration set is configured to grow microbubbles generated by the first vibration set. The control logic may provide a pause between the first vibration set and the second vibration set.

An ultrasonic surgical device including an elongate waveguide having a longitudinal axis and a distal end, and a blade extending away from the distal end of the waveguide, the blade including a curved portion that has at least five faces extending lengthwise along at least a portion of the length of the blade. Each of the faces has a width that extends perpendicular to the longitudinal axis of the waveguide and a length that extends orthogonal to the width. Each of the faces is flat across its width and is either flat along its entire length or includes one or more curved segments along its length, with each of the curved segments of an individual face being curved in the same direction. A method of fabricating an ultrasonic surgical device is also provided.

Disclosed is a tool bit for an ultrasonic osteotome, comprising a cutting portion (1) located at a front end of the tool bit for an ultrasonic osteotome, a connecting portion (2) located at a rear end of the tool bit for an ultrasonic osteotome and connected with the cutting portion (1). The cutting portion (1) has a grinding part (3) for grinding and a blade part (4) for cutting at a front end thereof, and the grinding part (3) and the blade (4) are integrally formed. The tool bit for an ultrasonic osteotome is of an integral structure formed by grinding part (3) and blade (4). During an operation, a medical worker can use the tool bit for an ultrasonic osteotome for multiple uses with no need to replace the tool bit frequently, thus reducing the operation time, greatly improving the efficiency of surgery, reducing the risk of surgery and the sufferings of a patient. At the same time, the integration of two different types of tool bits can also lower production costs and save manpower and material resources. The tool bit for an ultrasonic osteotome of the disclosure can be operated conveniently and comfortably with high safety.