Abstract: In an energy control device, a processor detects a gradual decrease start time at which the electric characteristic value in relation to electric energy output to an ultrasonic transducer starts a gradual decrease after a gradual increase. The processor calculates a difference value by subtracting the electric characteristic value from a peak value at gradual decrease start time and calculates an integrated value of the difference value from the gradual decrease start time. The processor executes, based on a fact that the integrated value become greater than a predetermined threshold, at least one of causing to stop or reduce the output of the electric energy to the ultrasonic transducer, and notifying that the integrated value become greater than the predetermined threshold.

Abstract: An ultrasonic device may include an electromechanical ultrasonic system defined by a predetermined resonant frequency, the electromechanical ultrasonic system further including an ultrasonic transducer coupled to an ultrasonic blade. A method of delivering energy to the ultrasonic device may include measuring a complex impedance of the ultrasonic blade coupled to the ultrasonic transducer, comparing the measured complex impedance to stored values of complex impedance patterns associated with ultrasonic blade functions, and applying, an algorithm to control a power output to the ultrasonic transducer based on the comparison. The method may further include delivering energy to the ultrasonic device based on a state or condition of an end effector, in which the state or condition of the end effector corresponds to a state of only sealing a tissue or of spot coagulating the tissue.

Abstract: A vibration transmitter includes: a proximal end extending portion; a supported portion; a distal end extending portion; a first relay unit provided between the supported portion and the proximal end extending portion; and a second relay unit provided between the supported portion and the distal end extending portion. The second relay unit includes a horn that is constructed such that an outer diameter at a position continuously adjacent to the supported portion is larger than: (i) an outer diameter of the first relay unit at a position continuously adjacent to the supported portion, and (ii) the outer diameter of the distal end extending portion. The horn expands amplitude of vibration output from a distal end of the distal end extending portion to be larger than a maximum amplitude at an antinode of vibration in the first relay unit or the proximal end extending portion.

Abstract: An ultrasonic instrument includes a body, a shaft assembly, and an end effector. The shaft assembly extends distally from the body. The shaft assembly includes an acoustic waveguide configured to acoustically couple with an ultrasonic transducer. The end effector includes an ultrasonic blade, a clamp arm and a clamp pad. The ultrasonic blade is in acoustic communication with the waveguide. The clamp arm is pivotally coupled with the shaft assembly. The clamp pad is configured to removably couple with the clamp arm while the clamp arm is pivotally coupled to the shaft assembly.

Abstract: In an ultrasonic sensor that is attached to a body component, a negative electrode line connected to a negative terminal is isolated from a shielding portion. The shielding portion is connected to a ground potential point without being connected to the negative electrode line.

Abstract: A surgical tool harvests power from a robotic surgical system having one or more robotic manipulators when a housing of the surgical tool is installed within a carriage of one of the robotic manipulators. The surgical tool harvests power via inductive coupling between an inductor of the surgical tool and a corresponding inductor of the carriage. The surgical tool may include an indicator that provides a user with an indication of remaining life of the surgical tool. The indicator may be an LED indicator that is illuminated with power generated via the inductive coupling. The indicator may also be an electro-chromic indicator that changes color when exposed to power generated via the inductive coupling. The indicator may also be a photo-chromic indicator that changes color when exposed to light from a light source powered via the inductive coupling.

Abstract: A vibration transmitting member transmits ultrasonic vibration generated by an ultrasonic transducer from a proximal side toward a distal side. The vibration transmitting member includes a connection connected to the ultrasonic transducer. When a reference vibration node, which is located most proximally among vibration nodes occurring on the distal side relative to the connection, is defined, while the vibration transmitting member vibrates at a resonance frequency in a predetermined frequency range, a cross-sectional area decreasing part is provided between the connection and the reference vibration node. In the cross-sectional area decreasing part, a cross-sectional area perpendicular to a longitudinal direction gradually decreases from the distal side toward the proximal side.

Abstract: The present disclosure relates generally to thrombectomy devices. An exemplary catheter comprises: an emitter assembly comprising at least one emitter; wherein each emitter comprises an electrode pair, and wherein each emitter is configured to generate a plurality of cavitation bubbles when a voltage is applied to the pair of electrodes; an infusion lumen formed by at least a portion of an outer wall of the catheter, the infusion lumen configured to receive a conductive fluid, wherein the emitter assembly is housed within the infusion lumen, wherein a distal segment of the infusion lumen includes a plurality of holes on the portion of the outer wall of the catheter, and wherein the plurality of holes are configured to release the conductive fluid and the plurality of cavitation bubbles out of the catheter to treat thrombus at a treatment site; an aspiration lumen including aspiration ports at the distal segment thereof.

Abstract: A surgical instrument includes an end effector, and a shaft assembly. The end effector includes an ultrasonic blade, a rotating body, and a clamp arm movable between an open and a closed position. The shaft assembly extends along an axis and includes clamp arm clocking assembly and a clamp arm pivot assembly. The clamp arm clocking assembly can drive the rotating body and the clamp arm between a first clocked position and a second clocked position. The clamp arm pivot assembly includes an actuator body defining a track, where the actuator body can actuate to drive the clamp arm between the open position and the closed position while the actuator body is in a rotational position relative to the ultrasonic blade. The track houses a portion of the clamp arm in the first clocked position and the second clocked position while the actuator body is in the rotational position.

Abstract: A surgical instrument is disclosed. The surgical instrument comprises an end effector comprising an ultrasonic blade and a clamp arm. The clamp arm is movable relative to the ultrasonic blade to transition the end effector between an open configuration and a closed configuration to clamp tissue between the ultrasonic blade and the clamp arm. The surgical instrument further comprises an ultrasonic transducer configured to generate an ultrasonic energy output and a waveguide configured to transmit the ultrasonic energy output to the ultrasonic blade. The surgical instrument further comprises a control circuit, configured to detect an immersion of the end effector in a liquid and compensate for heat flux lost due to the immersion of the end effector in the liquid.

Abstract: Various aspects of a generator, ultrasonic device, and method for estimating and controlling a state of an end effector of an ultrasonic device are disclosed. The ultrasonic device includes an electromechanical ultrasonic system defined by a predetermined resonant frequency, including an ultrasonic transducer coupled to an ultrasonic blade. A control circuit measures a complex impedance of an ultrasonic transducer, wherein the complex impedance is defined as Z g ? ( t ) = V g ? ( t ) I g ? ( t ) . The control circuit receives a complex impedance measurement data point and compares the complex impedance measurement data point to a data point in a reference complex impedance characteristic pattern. The control circuit then classifies the complex impedance measurement data point based on a result of the comparison analysis and assigns a state or condition of the end effector based on the result of the comparison analysis.

Abstract: A surgical instrument includes an end effector, a shaft assembly, and an axial location feature. The end effector includes an ultrasonic blade and a clamp arm that can move between an open and closed position. The shaft assembly includes a proximal shaft portion, an acoustic waveguide extending proximally from the ultrasonic blade, a distal shaft portion extending along a distal axis, and an articulation section interposed between the proximal shaft portion and the distal shaft portion. The articulation section can deflect the distal shaft portion and the end effector relative to the longitudinal axis between a non-deflected position and a deflected position. The axial location feature can inhibit the ultrasonic blade from shifting relative to the clamp arm along the distal axis as the end effector is driven between the non-deflected position and the deflected position.

Abstract: An apparatus includes a shaft assembly and an end effector. The shaft assembly includes a first tube, a second tube, and a distally projecting tongue. The second tube is coaxially disposed within the first tube. One of the first tube or the second tube is configured to translate relative to the other of the first tube or the second tube. The tongue is fixed to either the first tube or the second tube. The end effector includes an ultrasonic blade and a clamp arm. The clamp arm is pivotally coupled to the tongue. The clamp arm is configured to pivot toward and away from the ultrasonic blade in response to relative translation between the first and second tubes. The tongue is configured to flex relative to the first tube and the second tube in response to the clamp arm grasping tissue.

Abstract: Ultrasound (US) apparatus and method for applying low energy US onto an internal tissue/organ, including a non-invasive US appliance used on a treatment region over the internal tissue/organ, and an electrical stimulation apparatus for simultaneously inducing interferential electrical stimulation. A controller controls parameters of the electrical stimulation apparatus and the US appliance, and dynamically changes at least one of the parameters, for maintaining the impedance of the body tissue in the treatment region within an impedance range. The US apparatus includes an impedance monitoring apparatus for continuously measuring, tracking, and monitoring impedance in the treatment region, wherein the controller dynamically changes at least one of the parameter in response to the impedance as monitored, for maintaining the impedance within the predefined range.

Abstract: Various embodiments are directed to surgical instruments comprising an end effector, a shaft and a jaw assembly. The end effector may comprise an ultrasonic blade extending distally substantially parallel to a longitudinal axis. The shaft may extend proximally from the end effector along the longitudinal axis. The jaw assembly may comprise first and second jaw members. The jaw assembly may be pivotable about a first axis substantially perpendicular to the longitudinal axis from a first position where the first and second jaw members are substantially parallel to the ultrasonic blade to a second position. Additionally, the first and second jaw members may be pivotable about a second axis substantially perpendicular to the first axis.

Abstract: An ultrasonic surgical instrument includes an inner tube, an outer tube, an ultrasonic blade, and a clamp member pivotably moveable relative to the ultrasonic blade. The ultrasonic blade is acoustically coupled to an ultrasonic transducer. The clamp member pivotably movable relative to the ultrasonic blade between an open configuration and an approximated configuration with respect to the ultrasonic blade, wherein the clamp member is pivotably coupled to the inner tube, wherein the clamp member is pivotably coupled to the outer tube, and wherein movement of the outer tube relative to the inner tube between the first position and the second position transitions the clamp member between the open configuration and the approximate configuration.

Abstract: An energy surgical instrument includes first and second grasping pieces for grasping a blood vessel. At least one of the grasping pieces is designed to apply treatment energy to a grasped blood vessel. The instrument also includes a processor designed to set a wall thickness of the blood vessel, and a grasping force adjuster designed to adjust a grasping force applied by the first and second grasping pieces. A first grasping force is applied when the wall thickness set by the processor is larger than a predetermined thickness, and a second grasping force, which is larger than the first grasping force, is applied when the wall thickness set by the processor is equal to or smaller than the predetermined thickness. A treatment method includes applying treatment energy to a blood vessel grasped by the first and second grasping pieces of the instrument to seal the blood vessel.

Abstract: A surgical instrument includes a shaft assembly, an ultrasonic blade, and a cleaning device. The shaft assembly includes a first tube and an acoustic waveguide. The first tube has a first inner diameter and a distal end. The waveguide has a first outer diameter. The waveguide extends within the first tube. The first outer diameter of the acoustic waveguide and the first inner diameter of the first tube together define a gap. The ultrasonic blade extends distally from the distal end of the first tube. The acoustic waveguide is configured to communicate ultrasonic energy to the ultrasonic blade. The cleaning device is configured to actuate within the gap to thereby clean at least a portion of the shaft assembly and/or at least a portion of the ultrasonic blade.

Abstract: A transducer cover for use in an ultrasonic medical instrument having a transducer is disclosed. The transducer cover includes a vibration absorbing layer of a generally cylindrical form made of a synthetic resin having a vibration absorbing property, and a chemical blocking layer of a generally cylindrical form made of a synthetic resin which is impermeable to water and chemicals. The vibration absorbing layer and the chemical blocking layer are coaxially laminated, and capable of sealing arrangement over and around the transducer. Also disclosed is an ultrasonic medical instrument having an ultrasonic transducer and the transducer cover, and a method for forming the transducer cover over and around an ultrasonic transducer of an ultrasonic medical instrument.

Abstract: A transducer array includes at least one annular shear wave generation transducer that defines an interior area, the at least one annular shear wave generation transducer being configured to generate a shear wave excitation to a region of interest such that the shear wave excitation excites at least a part of a corresponding cylindrical portion of the region of interest and shear waves propagating from the cylindrical portion of the region of interest constructively interfere in an interior region of the cylindrical portion of the region of interest: and at least one tracking transducer positioned in the interior area of the at least one annular shear wave generation transducer, the at least one tracking transducer being configured to detect a shear wave in the interior region of the region of interest.

Abstract: An apparatus includes a shaft assembly, an ultrasonic blade, and a clamp assembly. The shaft assembly includes an acoustic waveguide operable to transmit ultrasonic vibrations to the blade. The clamp assembly includes a clamp arm pivotable toward and away from the blade about a pivot axis, to clamp tissue between the clamp arm and the blade. A rotation feature may provide rotation of the blade relative to the clamp arm about the longitudinal axis of the waveguide. Alternatively, the rotation feature may provide rotation of the clamp arm relative to the blade about the longitudinal axis. The rotation feature may be driven based on pivotal positioning of the clamp arm relative to the blade about the pivot axis. The rotation feature may selectively lock and unlock the angular position of either the blade or the clamp arm about the longitudinal axis at any of a number of predetermined angular positions.

Abstract: A material for use in a medical device includes a blend of a non-melt polymer such as Polyamideimide, a meltable carrier polymer such as Polyetherketoneketone and lubricants/rheology modifiers such that the final polymer material can be extruded, pelletized and used to injection mold components for the medical device. The ratios of the Polyamideimide, Polyetherketoneketone and the lubricants are selected to provide sufficient lubricity and glass transition temperature to the material to make it appropriate for use in high temperature applications and additive manufacturing processes.

Abstract: An ultrasonic surgical instrument is disclosed. The ultrasonic surgical instrument includes a housing, an ultrasonic transducer assembly to selectively generate ultrasonic motion, a motor within the housing, an outer sheath coupled to the housing, and a blade operably coupled to the ultrasonic transducer assembly and rotatably supported within the outer sheath for rotation with the ultrasonic transducer assembly. The ultrasonic transducer assembly is rotatably supported within the housing. The motor is configured to selectively apply a rotary motion to the ultrasonic transducer assembly. The outer sheath includes a distal tip portion defining a tip cavity. The blade includes a tissue-cutting distal end rotatably supported within the tip cavity. A portion of the tissue-cutting distal end is configured to apply the ultrasonic motion to tissue.

Abstract: An expandable reamer includes, inter alia, an outer tube, an inner shaft, a movable blade, and an actuator assembly. The expandable reamers can be used to remove diseased bone.

Abstract: An apparatus comprises a body and a shaft assembly. The shaft assembly is configured to couple with the body such that the shaft assembly extends distally relative to the body. The shaft assembly comprises a tubular member, an acoustic waveguide, and a guiding member. The acoustic waveguide is operable to selectively couple with an ultrasonic transducer assembly. The tubular member is configured to insertingly receive the acoustic waveguide. The acoustic waveguide comprises a guide feature. The guiding member is configured to engage the guide feature of the acoustic waveguide and thereby orient the acoustic waveguide in relation to the tubular member.

Abstract: An electrosurgical device may include a controller including an electrical generator, a surgical probe having a distal active electrode in electrical communication with an electrical source terminal of the electrical generator, and a return pad in electrical communication with an electrical return terminal of the electrical generator. The electrical generator may be configured to source an electrical current from the electrical source terminal, in which the electrical current combines characteristics of a therapeutic electrical signal and characteristics of an excitable tissue stimulating signal. The device may be configured to determine a distance from the electrode to an excitable tissue, based at least in part on an output signal generated by a sensing device in the pad. The device may also be configured to alter one or more characteristics of the therapeutic signal when the distance from the electrode to the tissue is less than a predetermined value.

Abstract: An energy treatment device includes a movable handle including a jaw and a first through hole, an elongated member, and a sheath including a hollow portion and a second through hole, wherein the hollow portion is configured to receive the elongated member. The second through hole is configured to extend so as not to overlap with the hollow portion. The movable handle is configured to rotate about an axis which is configured to pass through the first through hole and the second through hole such that the jaw is rotatable with respect to the sheath, and (D1+D2)/2<L1 is satisfied, where D1 is a diameter of the hollow portion, D2 is a diameter of the first through hole, and L1 is a distance between a central position of the hollow portion and a central position of the first through hole in an opening/closing direction of the jaw.

Abstract: A prepuce extruding, cutting, hemostasis, and healing assembly using ultrasonic wave. Ultrasonic wave is applied in extruding, cutting, hemostasis, and healing of prepuce at a conjunction of internal and external tissues of a distal part of a human body. The assembly includes an ultrasonic generating device, a transmission device and a circumcision device. The ultrasonic generating device is used for generating ultrasonic waves, is connected to the transmission device and can send the ultrasonic waves to the transmission device. The transmission device is connected to the circumcision device and can send the ultrasonic waves to the circumcision device. The circumcision device is used for extruding and cutting a prepuce and/or performing hemostasis and/or healing of wounds. In this way, circumcision can be completed within just several seconds, and immediate healing can be achieved, preventing bleeding during and after a surgery.

Abstract: A method of determining instability of an ultrasonic blade includes monitoring a phase angle ? between voltage Vg(t) and current Ig(t) signals applied to an ultrasonic transducer, coupled to an ultrasonic blade via an ultrasonic waveguide, inferring the blade temperature based on the phase angle ?, comparing the inferred temperature to an ultrasonic blade instability trigger point threshold, and adjusting a power level applied to the ultrasonic transducer to modulate the temperature of the blade. The method may also include determining a frequency/temperature relationship of an ultrasonic blade that exhibits a displacement or modal instability and compensating for a thermal induced instability of the ultrasonic blade. The method may be implemented in an ultrasonic surgical instrument or by a control circuit in a power generator for the ultrasonic surgical instrument.

Abstract: A adaptor is used with a driver, a drill, and a cannula to facilitate removal of material from bone and placement of the cannula in the bone. The adaptor includes an end portion provided at a proximal first end that is configured to engage a portion of the drill; a body portion attached to the end portion and extending from the end portion toward a distal second end; a head portion provided at the distal second end and attached to the body portion; and a passageway for receiving the drill that extends through the adaptor. Furthermore, the head portion includes a distal surface and at least one coupler provided on or adjacent the distal surface for releasably engaging. the cannula.

Abstract: A radio frequency (RF) instrument may include a method of classifying a tissue in live time. The method may include activating the instrument for a first period of time T1 when the RF instrument contacts the tissue, plotting at least three electrical parameters associated with the tissue to classify the tissue into distinct groups, and applying a classification algorithm to classify the tissue into a distinct group in live time. The parameters may include an initial impedance of the tissue, a minimum impedance of the tissue, and an amount of time that the impedance slope is ˜0. The instrument may collect the parameters during a predetermined amount of time, such as within the first 0.75 seconds of the activation of the device. The classification algorithm may include a support vector machine algorithm that may use a linear, polynomial, or radial basis set.

Abstract: An ultrasonic surgical instrument and method of sealing tissue includes interrogating the tissue with an electrical signal and adjusting an electrical parameter of at least one of the ultrasonic energy or the RF energy in response to the tissue feedback to inhibit transecting the tissue. The ultrasonic surgical instrument has an end effector, a shaft assembly, a body, and a power controller. The power controller is operatively connected to the ultrasonic blade and the RF electrode and configured to direct activation of the ultrasonic blade or the RF electrode. The power controller is further configured to interrogate the tissue with the electrical signal via the ultrasonic blade or the RF electrode to provide a tissue feedback and adjust an electrical parameter of the ultrasonic energy or the RF energy in response to the tissue feedback to inhibit transecting the tissue.

Abstract: Devices, systems, and methods for performing an ophthalmic procedure in an eye are disclosed. The devices include a hand-held portion and a distal, elongate member coupled to the hand-held portion having a lumen operatively coupled to a vacuum source. A drive mechanism operatively coupled to the elongate member is configured to oscillate the elongate member. When in use, the device is configured to aspirate ocular material from the eye through the lumen. The drive mechanism retracts the elongate member with a retraction speed profile and advances the elongate member with an extension speed profile. The retraction speed profile is different from the extension speed profile.

Abstract: A surgical apparatus comprises a transducer assembly and a shaft assembly. The transducer assembly is operable to convert electrical power into ultrasonic vibrations. The shaft assembly comprises an ultrasonic waveguide, a sheath, a shroud, and a torque transfer assembly. The waveguide is configured to couple with the transducer assembly. The waveguide is disposed within the sheath. The sheath extends through the shroud. The torque transfer assembly is contained within the shroud. The torque transfer assembly is configured to transfer a predetermined range of torque from the shroud to the waveguide to thereby couple the waveguide with the transducer assembly. The torque transfer assembly is further configured to prevent transfer of torque from the shroud to the waveguide beyond an upper limit of the predetermined range.

Abstract: An ultrasonic transducer includes driving source attached to an outer periphery of a bolt with being sandwiched between a distal side block and a proximal side block in a direction along a longitudinal axis, and the driving source includes a piezoelectric element generating ultrasonic vibration by an electric energy being supplied. By transmission of the ultrasonic vibration generated in the piezoelectric element, the ultrasonic transducer in a state in which a first vibration node that is generated in the driving source and a second vibration node that is generated in the bolt are prevented from being displaced with respect to each other in the direction along the longitudinal axis.

Abstract: A generator, ultrasonic device, and method for controlling a temperature of an ultrasonic blade are disclosed. A control circuit coupled to a memory determines an actual resonant frequency of an ultrasonic electromechanical system comprising an ultrasonic transducer coupled to an ultrasonic blade by an ultrasonic waveguide. The actual resonant frequency is correlated to an actual temperature of the ultrasonic blade. The control circuit retrieves from the memory a reference resonant frequency of the ultrasonic electromechanical system. The reference resonant frequency is correlated to a reference temperature of the ultrasonic blade. The control circuit then infers the temperature of the ultrasonic blade based on the difference between the actual resonant frequency and the reference resonant frequency.

Abstract: A joint surgical system includes, a treatment tool, a high-frequency output section which outputs high-frequency energy to the treatment tool, an ultrasonic output section which outputs ultrasonic energy to the treatment tool, a measurement section which measures a temperature of the liquid, and a control section which controls the high-frequency output section to stop output of the high-frequency energy and controls the ultrasonic output section to continue output of the ultrasonic energy when a measurement temperature measured by the measurement section is equal to or higher than a predetermined temperature.

Abstract: A transmission probe for transmitting guided waves propagating in the longitudinal direction of a long member and a reception probe for receiving guided waves derived from the guided waves reflected from a predetermined portion of the long member are set on the long member. The guided waves received by the reception probe include a guided wave serving as a second signal that is noise of a desired first signal. The guided wave serving as the second signal having nodes in a circumferential direction distribution of displacement in a specific direction in the circumferential surface of the long member, and the guided waves transmitted by the transmission probe are formed such that the displacement of the guided wave serving as the second signal in the specific direction becomes zero at a specific circumferential surface position of the long member.

Abstract: 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.

Abstract: An ultrasonic horn, an ultrasonic transducer assembly including the same, and an ultrasonic surgical instrument including the same. The ultrasonic horn includes a body and a nose. The body defines a length and a maximum diameter of the ultrasonic horn. The body includes at least one depression arranged annularly thereabout that is configured to receive at least one protrusion for mounting the body within a support structure. The nose extends distally from the body. The body defines a proximal connector configured to enable the body to be secured to a piezoelectric stack and the nose defines a distal connector configured to enable the nose to be engaged with a waveguide for transmission of ultrasonic energy produced by the piezoelectric stack to the waveguide.

Abstract: An ultrasonic surgical instrument and method of sealing a tissue includes measuring a first measured termination parameter with a controller and terminating an ultrasonic energy and an RF energy when the first measured termination parameter reaches a set one of a first smaller tissue predetermined termination parameter or a first larger tissue predetermined termination parameter to thereby inhibit transecting the tissue. The ultrasonic surgical instrument further includes an end effector having an ultrasonic blade, an RF electrode, and a controller. The controller operatively connects to the ultrasonic blade and the RF electrode and is configured to terminate the ultrasonic energy and the RF energy when the first measured termination parameter reaches the set one of the first smaller tissue predetermined termination parameter or the first larger tissue predetermined termination parameter to thereby inhibit transecting the tissue.

Abstract: An ultrasonic surgical instrument and method of limiting an ultrasonic blade temperature includes adjusting at least one power parameter of the ultrasonic energy in response to reaching a predetermined frequency parameter change threshold in the ultrasonic blade limiting the temperature of the ultrasonic blade to an upper temperature limit. The ultrasonic surgical instrument further includes an end effector having an ultrasonic blade, a jaw, and a controller. The jaw is movably positioned relative to the ultrasonic blade and configured to move between an open position and a closed position. The controller operatively connects to the ultrasonic blade and is configured to measure an ultrasonic frequency of the ultrasonic blade. The controller has a memory including a plurality of predetermined data correlations that correlate changes in measured ultrasonic frequency of the ultrasonic blade to a blade temperature of the ultrasonic blade.

Abstract: Disclosed is a surgical instrument directed to phacoemulsification for cataract eye surgery. The instrument generally includes a hollow titanium needle extending from a vibration generating handpiece. Together, the hollow needle and handpiece form an aspiration pathway to suck cataractous debris from an eye. A piezoelectric transducer in the handpiece generates both high and low ultrasonic frequency vibrations that rings the needle. The low frequency produces a node-free standing wave along the needle and the high frequency produces a standing wave along the needle with a node of minimum amplitude along the needle. Both frequencies produce a high anti-node at the needle's tip. The low frequency causes higher cavitation for emulsifying the cataract and the high frequency facilitates fragmentation of the cataract with a low heat portion of the needle at the eye incision point. The placement of the node along the needle can be tailored by way of a tapered section in a step horn region of the handpiece.

Abstract: Disclosed is a surgical instrument directed to phacoemulsification for cataract eye surgery. The instrument generally includes a hollow titanium needle extending from a vibration generating handpiece. Together, the hollow needle and handpiece form an aspiration pathway to suck cataractous debris from an eye. A piezoelectric transducer in the handpiece generates both high and low ultrasonic frequency vibrations that rings the needle. The low frequency produces a node-free standing wave along the needle and the high frequency produces a standing wave along the needle with a node of minimum amplitude along the needle. Both frequencies produce a high anti-node at the needle's tip. The low frequency causes higher cavitation for emulsifying the cataract and the high frequency facilitates fragmentation of the cataract with a low heat portion of the needle at the eye incision point. The placement of the node along the needle can be tailored by way of a tapered section in a step horn region of the handpiece.

Abstract: A grasping treatment instrument includes a holder openable and closable relative to a treatment section. A pad extends straight in a natural state, and is attached along an installation surface of the holder. A holder inclined surface is provided on the installation surface, and inclines in a state that the holder inclined surface extends toward a treatment section side as extending toward a distal side. A pad inclined surface is formed in the pad attached to the holder, and is formed in a state that the pad inclined surface is elastically deformed along an inclination of the holder inclined surface. The pad inclined surface inclines in a state that the pad inclined surface extends toward the treatment section side as extending toward the distal side.

Abstract: An ultrasonic cutting tip has a hollow shaft with a proximal and distal end. The proximal end is configured to be attached to an ultrasonic hand piece, and the distal end has a smooth continuous surface. An opening is located near the distal end of the hollow shaft. The opening is configured to cut vitreous when the cutting tip is vibrated ultrasonically in a torsional manner.

Abstract: An attachment structure for securing a robot arm to a support structure, the attachment structure comprising: a mount for mounting to the support structure; and a carrier for connecting to the base of the robot arm, the carrier comprising: a carrier rotational alignment feature for engaging a complementary robot arm base rotational alignment feature, a carrier axial alignment feature for engaging a complementary robot arm base axial alignment feature, and a locking mechanism moveable, once the robot arm base and the carrier are engaged, between an unlocked position which does not constrain the location of the robot arm base along an axis of the carrier, and a locked position which does constrain the location of the robot arm base along the said axis of the carrier relative to the carrier, wherein the locking mechanism is independent of the carrier rotational alignment feature and the carrier axial alignment feature such that the locking mechanism is not actuated during engagement of the carrier and the robot

Abstract: An ultrasonic vibration application tool equipped with a Langevin type ultrasonic vibrator which is suitably employable for ultrasonic processing devices and which efficiently generates ultrasonic vibration includes: a cylindrical housing having a contact face on a lower or bottom part of an inner surface thereof, and a lower screw part of an outer surface thereof; a bolted Langevin type ultrasonic vibrator comprising a front mass, a rear mass and a polarized piezoelectric element arranged between both masses, in which the front mass comprises a cylindrical tool-holder and a disc-shaped bulging part provided with a contact face for fitting to the contact face of the housing; and a ring-shaped counterweight having an upper screw part on an inner peripheral surface which is screwed with the screw part of the housing.

Abstract: A waveguide rod for an ultrasonic scalpel having a relatively desirable amplitude and frequency comprises a proximal gain structure, a distal gain structure, an intermediate structure, and a frequency adjustment structure. The proximal gain structure and the intermediate structure are connected in a position near an antinode of longitudinal vibration of the waveguide rod through a proximal side gain step. The distal gain structure and the intermediate structure are connected in a position near an antinode of the longitudinal vibration of the waveguide rod through a distal side gain step. The intermediate structure comprises N (N>0, and N is an integer) gain holding structures that are connected two by two in a position near an antinode of the longitudinal vibration of the waveguide rod through an intermediate gain step. X (X>0, and X is an integer) frequency adjustment structures exist on the gain holding structure.

Abstract: An autoclavable handle (5) includes a handle housing (9) and with at least one switch element (11) mounted to the handle housing (9). The autoclavable handle (5) is permanently resistant to the effects of machine cleaning and of steam sterilization. The at least one switch element (11) is resiliently pressable into the handle housing (9). The switch element (11) is mounted in the handle housing (9) via at least one web (16) arranged on an underside of the switch element (11). The switch element (11) is sealed off from the handle housing (9) via a circumferential sealing element (12).