Abstract: A catheter US transducer container and method of manufacture thereof including a housing, one or more cooling channels oriented longitudinally along a longitudinal axis of the container, a sealing cooling channel cover, one or more PE elements positioned on a floor of the cooling channel, the cooling channel having a trapezoid cross section at any point along the PE element.

Abstract: An ultrasonic surgical instrument includes an end effector having an ultrasonic blade, an ultrasonic transducer assembly, and a shaft assembly the shaft assembly includes a tube, an acoustic waveguide, and a sheath radially positioned between the acoustic waveguide and the tube. The acoustic waveguide is received within the tube and is acoustically connected between the ultrasonic blade and ultrasonic transducer assembly to communicate ultrasonic vibrations from the ultrasonic transducer assembly to the ultrasonic blade. The acoustic waveguide extends along a longitudinal axis. The sheath includes a sheath body having an outer body surface and a plurality of damping rings radially extending from the outer body surface and engaged with the tube. The plurality of damping rings are configured to acoustically isolate the acoustic waveguide from the tube.

Abstract: A surgical instrument includes a housing having an elongated body extending distally therefrom. The elongated body defines a first articulating portion and a second articulating portion. The elongated body defines a lumen therein. An end effector is supported at a distal end portion of the elongated body. A flexible waveguide extends through the lumen of the elongated body. A proximal end portion of the flexible waveguide connects to an ultrasonic transducer. A distal end portion of the flexible waveguide is connected with the end effector. the flexible waveguide defines a first articulating portion having a narrower thickness than a thickness of other portions of the flexible waveguide and a second articulating portion having a narrower thickness than a thickness of other portions of the flexible waveguide.

Abstract: An ultrasonic surgical blade includes a body having a proximal end, a distal end, and an outer surface. The distal end is movable relative to a longitudinal axis in accordance with ultrasonic vibrations applied to the proximal end. At least a portion of the outer surface of the body comprises a lubricious coating adhered thereto. The lubricious coating has a coefficient of friction that is less than the coefficient of friction of the outer surface of the body.

Abstract: A method of treating a calculi mass can include using an ultrasonic probe to produce acoustic energy and fragment the mass. The method can include varying the frequency at which fragmentation occurs to treat the mass with a resonant frequency. The ultrasonic probe can have a distal tip for contact with the mass, where the tip has a morphology for concentrating stress on the mass. The ultrasonic probe can have two or more ultrasonic horns to allow for higher voltage and power levels.

Abstract: A surgical instrument includes an end effector and a handle assembly. The end effector is configured to operate at a first energy level and at a second energy level. The end effector is further configured to transition between an open position and a closed position. The end effector is configured to grasp tissue in the closed position. The handle assembly includes a body, a trigger, and an activation element. The trigger is configured to pivot in a first direction relative to the body to actuate the end effector from the open position to the closed position. The activation element is configured to activate the end effector at either the first energy level or the second energy level. The trigger is configured to either activate the activation element or determine whether the end effector operates at the first energy level or the second energy level.

Abstract: In one general aspect, various embodiments are directed to a surgical instrument that can supply mechanical energy and electrical energy to an end effector of the surgical instrument. The surgical instrument may be operated in a first operating mode in which a transducer of the surgical instrument produces mechanical energy, or vibrations, that are transmitted to the end effector and a second operating mode in which electrical energy, or current, can flow through the end effector to perform electrosurgery. In another general aspect, the surgical instrument may comprise a clamp, or jaw, which can be moved into a closed position to hold tissue against a waveguide, or blade, of the end effector. In the second operating mode of the surgical instrument, current can flow from a power source, through the waveguide, and return to the power source through a path comprising the jaw.

Abstract: A method of ultrasonic sealing includes activating an ultrasonic blade temperature sensing, measuring a first resonant frequency of an ultrasonic electromechanical system that includes a transducer coupled to the blade via a waveguide, making a first comparison between the measured first resonant frequency and a first predetermined resonant frequency, and adjusting a power level applied to the transducer based on the first comparison. The first predetermined frequency may correspond to an optimal tissue coagulation temperature. The method may further include measuring a second resonant frequency of the system, making a second comparison between the measured second frequency and a second predetermined frequency, and adjusting the power level based on the second comparison. The second predetermined frequency may correspond a melting point temperature of a clamp arm pad. An ultrasonic instrument and a generator may implement the method.

Abstract: An ultrasonic device may include an electromechanical system defined by a resonant frequency and further include an ultrasonic transducer coupled to an ultrasonic blade. The device may be composed of two or more components, one of which is reusable and one of which is disposable. A method of detecting a proper installation of the components may include determining a spectroscopy signature of the blade coupled to the transducer, comparing the signature to a reference signature, determining an installation state of the components based on the comparison, and controlling a delivery of power to the transducer based on the comparison. The method may include enabling an operation of the device when the installation state of components is proper. The method may further include disabling the device when the installation state is not proper and generating a warning. The warning may be visible, audible, or tactile.

Abstract: A surgical instrument includes a body, a shaft assembly, an end effector, a clamp actuator, and a blade cooling system. The end effector has a clamp arm and an ultrasonic blade coupled with an ultrasonic transducer. The clamp arm is configured to selectively move from a first actuator position toward a second actuator position thereby directing movement of the clamp arm from the open position toward the closed position, respectively. The cooling system is operable to deliver fluid coolant to the ultrasonic blade to thereby cool the ultrasonic blade while the clamp actuator remains in the first actuator position.

Abstract: An ultrasonic surgical instrument and method of deflecting an end effector include an acoustic waveguide with a proximal waveguide body portion defining a longitudinal axis, a distal waveguide body portion having an ultrasonic blade distally projecting therefrom, and an articulation body portion extending between the proximal and distal waveguide body portions. The articulation body portion of the acoustic waveguide is configured to flex a first direction to thereby deflect the ultrasonic blade relative to the longitudinal axis and through a first plane. In addition, the articulation body portion of the acoustic waveguide is further configured to flex a second direction to thereby deflect the ultrasonic blade relative to the longitudinal axis and through a second plane. The second direction is different than the first direction such that the second plane is different than the first plane for multiplanar deflection of the ultrasonic blade relative to the longitudinal axis.

Abstract: A surgical system is disclosed including impedance sensors and a control circuit. The impedance sensors are configured to apply a therapeutic level of RF energy to tissue, sense a real time impedance of the tissue, sense a first tissue impedance based on an initial contact with the tissue, sense a second tissue impedance of the tissue without applying a therapeutic amount of RF energy to the tissue. The control circuit is configured to determine a control parameter of a motor based on the first tissue impedance and the second tissue impedance, determine a percentage of use of an end effector, detect a change of the real time impedance of the tissue, adjust the control parameter of the motor based on the change of the real time impedance and the percentage of use of the end effector, and control delivery of a therapeutic energy application to the tissue.

Abstract: The present disclosure relates generally to the field of medical devices. In particular, the present disclosure relates to endoscopic medical devices with distally actuated axial displacement configured to impart in-plane or rotational ultrasonic reciprocation to an end effector.

Abstract: An apparatus comprises a body assembly and a shaft extending distally therefrom. The shaft defines a longitudinal axis. The apparatus further comprises an acoustic waveguide and an articulation section coupled with the shaft. A portion of the articulation section encompasses a flexible portion of the waveguide. The articulation section further comprises first member and a second member that is longitudinally translatable relative to the first member. The apparatus further comprises an end effector including an ultrasonic blade in acoustic communication with the waveguide. A distal portion the ultrasonic blade is disposed in a first direction away from the longitudinal axis at a bend angle. The end effector also includes a clamp arm that is coupled with the first member and the second member, and an articulation drive assembly operable to drive articulation of the articulation section to thereby deflect the end effector from the longitudinal axis in the first direction.

Abstract: An energy control device supplies power to an ultrasonic treatment instrument including an end effector performing treatment using ultrasonic vibration generated by an ultrasonic transducer. The energy control device includes an energy source configured to output the power to the ultrasonic transducer, and an integrated circuit. The integrated circuit is configured to: acquire a resonance frequency of a vibration system including the ultrasonic transducer; calculate an initial feature value relating to the resonance frequency after a start of an output of the power; set a threshold based on the initial feature value; and perform causing the energy source to stop or reduce the output of the power to the ultrasonic transducer based on a relationship between the resonance frequency and the threshold, or notifying the relationship between the resonance frequency and the threshold.

Abstract: An ultrasonic device may include an electromechanical ultrasonic system defined by a predetermined resonant frequency and include an ultrasonic transducer coupled to an ultrasonic blade. A method of delivering energy to the device may include applying energy to the blade at a first power level via the transducer coupled to the blade, measuring a complex impedance of the transducer, receiving a complex impedance feedback data point, comparing the complex impedance feedback data point to a reference complex impedance characteristic pattern, and determining that the blade is contacting a vessel based on the comparison. The method may also include disabling the power applied to the transducer and switching to a lower power level. The method may further include generating a warning that the blade is contacting a vessel, such as a light or a sound. An ultrasonic surgical instrument may effect the method.

Abstract: In a surgical method, an elongate probe is inserted into a spinal disc exemplarily into a nucleus pulposus thereof in a direction generally parallel to vertebral end faces adjacent to the spinal disc. During the inserting of the elongate probe, the probe is ultrasonically vibrated. Thereafter, while ultrasonically vibrating the elongate probe, one moves the elongate probe to sever a prismatic portion of the spinal disc including a prismatic section of the nucleus pulposus. The prismatic portion of the spinal disc is removed from a remaining portion of the spinal disc.

Abstract: An ultrasonic surgical instrument is disclosed including an ultrasonic blade, an ultrasonic transducer operably coupled to the ultrasonic blade, and a control circuit. The ultrasonic transducer is configured to transmit ultrasonic vibrations to the ultrasonic blade based on a drive signal. The control circuit is configured to provide the drive signal to the ultrasonic transducer, monitor a vibration frequency of the drive signal, and modify the drive signal based on a change in the vibration frequency of the drive signal.

Abstract: The present teachings relate generally to a medical flexible needle assembly (10), comprising a needle portion (20) disposed at a distal end (12) of the assembly; a stiff portion (30) disposed at a proximal end 14 of the assembly; an flexible portion disposed between and interconnecting the needle portion and the stiff portion, including a flex distal portion (42), a flex proximal portion (44); and a jacketing member (50) disposed about the assembly (10) over at least part of the flexible portion (40); characterized in that the jacketing member (50) includes one or more coupled regions (60) and one or more decoupled region (70), wherein in at least one or more of the one or more coupled regions (60) are located proximally, distally, or both of the flexible portion (40).

Abstract: A cannula holder capable of securing a cannula to the holder at the time of piercing work, and easily removing the cannula from the holder using tweezers or the like. The cannula holder, to which a piercing needle for piercing an eyeball and a cannula are attached when attaching the cannula used in ophthalmic operations to the eyeball, includes claw portions that are formed on a front end of the cannula holder and which press sides of the cannula either at positions where said claw portions face each other or from multiple directions. A depression may be provided in a side of the front end of the cannula holder, allowing visibility of a part of a back end of the cannula from the depression.

Abstract: Various systems and methods for determining the composition of tissue via an ultrasonic surgical instrument are disclosed. A control circuit can be configured to monitor the change in resonant frequency of an ultrasonic electromechanical system of the ultrasonic surgical instrument as the ultrasonic blade oscillates against a tissue and determine the composition of the tissue accordingly. In some aspects, the control circuit can be configured to modify the operation of the ultrasonic electromechanical system or other operational parameters of the ultrasonic surgical instrument according to the detected tissue composition.

Abstract: A surgical apparatus comprises a body, an ultrasonic transducer, a shaft, an acoustic waveguide, an articulation section, an end effector, and an articulation drive assembly. The ultrasonic transducer is operable to convert electrical power into ultrasonic vibrations. The shaft couples the end effector and the body together. The acoustic waveguide is coupled with the transducer. The articulation section includes a collar that is located distal to a nodal portion of the waveguide and is operable to deflect the end effector away from the longitudinal axis. The end effector comprises an ultrasonic blade in acoustic communication with the ultrasonic transducer. The articulation drive assembly is operable to drive articulation of the articulation section. The articulation drive assembly comprises at least one translating articulation driver coupled with the collar. The ultrasonic blade is operable to deliver ultrasonic vibrations to tissue even when the articulation section is in an articulated state.

Abstract: A medical tool includes a rotation mechanism that further includes a warning feature. The warning feature provides an indication when the rotation mechanism has achieved a number of rotations.

Abstract: A vibration transmitter can include a straight portion, a curved portion, a first curved surface provided on an external surface of the curved portion, a second curved surface facing a side opposite to the first curved surface and a first portion provided on the first curved surface. The first portion can extend towards a side opposite to the side toward which the curved portion is curved and a distance between the first portion and an imaginary curved surface can increase from the proximal side toward the distal side, and the imaginary curved surface being parallel with the second curved surface.

Abstract: An ultrasonic surgical system is disclosed including an end effector, an elongate shaft, an articulation joint, and an articulation system. The end effector is rotatable relative to the elongate shaft about the articulation joint. The articulation system includes a distal plate, a first cable, a second cable, and a gear. The distal plate is configured to articulate toward a first side of the gear based on the gear rotating in a first direction and articulate toward a second side of the gear based on the gear rotating in a second direction. The end effector is configured to articulate in a first articulation direction about the articulation joint based on the distal plate articulating toward the first side of the gear. The end effector is configured to articulate in a second articulation direction about the articulation joint based on the distal plate articulating toward the second side of the gear.

Abstract: A surgical instrument includes a body, a shaft assembly, and an end effector. The end effector includes an ultrasonic blade and a clamp arm movably coupled with the shaft assembly. The shaft assembly extends between the body and the end effector and includes an acoustic waveguide, a rotational driver, and a driver wrench. The rotational driver is configured to be received within the rotational drive channel and rotate the shaft assembly relative to the body. The acoustic waveguide includes a notch and the driver wrench includes a key, wherein the first notch of the acoustic waveguide is configured to receive the key.

Abstract: Surgical devices and systems having rotating end effector assemblies for treating tissue are provided. Methods for using the same are also provided.

Abstract: A method for controlling an operation of an ultrasonic blade of an ultrasonic electromechanical system is disclosed. The method includes providing an ultrasonic electromechanical system comprising an ultrasonic transducer coupled to an ultrasonic blade via an ultrasonic waveguide; applying, by an energy source, a power level to the ultrasonic transducer; determining, by a control circuit coupled to a memory, a mechanical property of the ultrasonic electromechanical system; comparing, by the control circuit, the mechanical property with a reference mechanical property stored in the memory; and adjusting, by the control circuit, the power level applied to the ultrasonic transducer based on the comparison of the mechanical property with the reference mechanical property.

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

Abstract: Provided is an ophthalmic instrument that is for retaining a tube member for providing communication between the inside and the outside of an eyeball, such that the tube member is stuck into an outer membrane of the eyeball and that is suitable for retaining the tube member at an outer peripheral portion of a cornea. An ophthalmic instrument includes a main body and a needle portion connected to the main body. The main body has a straight portion and a bent portion. When attaching a tube member to an eyeball, first, the needle portion is inserted through the tube member, and the tube member is stuck into an outer peripheral portion of a cornea as the outer membrane of the eyeball while a hole is made in the outer peripheral portion of the cornea with the needle portion.

Abstract: Disclosed is a surgical instrument for cataract eye surgery. The instrument generally includes a handpiece that delivers sub-ultrasonic and ultrasonic vibrations in either a steady-state emulsification mode or with on-off pulses that dynamically drives a hollow needle in either a pulsed fragmentation mode or a pulsed emulsification mode. The pulsed fragmentation mode is efficient at cutting lens tissue and the pulsed emulsification mode is efficient and emulsifying the cut lands tissue. The pulsed modes manage heat buildup from becoming excessive in the eye during the cataract surgery. While in the pulsed fragmentation mode, the hollow needle is never given the chance to vibrate at an established resonant frequency of the handpiece due to the short on-off period. In contrast, the pulsed emulsification mode has a long enough on-off period to permit an ultrasonic resonant frequency in the handpiece to develop thereby driving the hollow needle at a higher energy than the pulsed fragmentation mode.

Abstract: An ultrasonic surgical blade, wherein the blade has a curved shape, and both sides of the blade are provided with cutting surfaces, one surface is a concave surface and the other surface is a convex surface. The thickness of the blade is gradually thinned along a cutting direction from a proximal end to a distal end. The concave surface length is set as L1, the radius of curvature R1; the length of the convex surface L2, the radius of curvature R2; the angle of the bending of the center line of the blade is ?; the diameter of the proximal end of the blade is D; the thickness of the most distal end surface of the blade is T. The relationship among them is: L1=L2+L2/1.5*(D?T)*SIN(?) (1), R1=R2+2T (2). The range of each size is adjustable within 10%. An ultrasonic wave guide and an ultrasonic scalpel using this blade have fewer potential resonant frequencies, so the thermal damage to the tissue is small, and the performance is more stable.

Abstract: A milling module (60) for converting bone stock into bone chips comprises a shell (34) adapted for releasable attachment to a base module (32). The shell has an inlet opening (152) through which bone stock is introduced into the shell and an outlet opening (96) through which bone chips are discharged from the shell. A milling element (170) is moveably disposed in the shell between the inlet opening and the outlet opening for converting bone stock into bone chips. The shell includes abase (62) adapted for releasable attachment to the base module. The base includes the outlet opening and a lid (126) removably attached thereto. The lid includes the inlet opening of the shell. The base and the lid are collectively configured so that removal of the lid from the base allows the milling element to be accessed.

Abstract: Biomarkers are collected and used to determine biological propensities of a patient, to determine the efficacy of medical devices, to select and administer therapeutic agents, to select medical devices, to make adjustments to medical devices, and/or to adjust surgical techniques. An apparatus includes a port to draw a biological fluid (e.g., a mist) from a surgical site. The apparatus includes a sensor having a cantilevered beam. The beam includes substances selected to attract certain biomarkers as the fluid is communicated across the beam. The same apparatus or another apparatus is used to administer a therapeutic agent based at least in part on collected biomarker data. The therapeutic agent delivery apparatus may include a device that is also used to create a wound at a surgical site. For instance, a harmonic surgical instrument may be used to both collect biomarkers and administer a therapeutic agent (e.g., gene therapy using sonoporation).

Abstract: A method for characterizing a state of an end effector of an ultrasonic device is disclosed. The ultrasonic device including an electromechanical ultrasonic system defined by a predetermined resonant frequency. The electromechanical ultrasonic system further including an ultrasonic transducer coupled to an ultrasonic blade. The method including applying, by an energy source, a power level to the ultrasonic transducer; measuring, by a control circuit coupled to a memory, an impedance value of the ultrasonic transducer; comparing, by the control circuit, the impedance value to a reference impedance value stored in the memory; classifying, by the control circuit, the impedance value based on the comparison; characterizing, by the control circuit, the state of the electromechanical ultrasonic system based on the classification of the impedance value; and adjusting, by the control circuit, the power level applied to the ultrasonic transducer based on the characterization of the state of the end effector.

Abstract: Systems and methods for controlling an irrigation flow rate during a lithotripsy procedure are provided. The system includes a laser configured for lithotripsy procedure, a lithotripsy irrigation system, and a temperature sensor configured to provide input to enable control of a flow of the lithotripsy irrigation system in response to a change in temperature from the operation of the laser.

Abstract: In an energy treatment system, circuitry temporally detects an electrical property value of an ultrasonic transducer. After an elapse of predetermined time since a power supply outputs electric power by first output power, when determining that the value has started gradual decrease, causes the power supply to change the electric power from the first output power to second output power smaller than the first output power, and after the change to the second output power, when the electrical property has gradually increased, causes the power supply to change the electric power from the second output power to third output power larger than the second output power.

Abstract: The disclosed technology is directed to an ultrasonic probe comprises a probe main portion configured to transmit ultrasonic vibration generated by an ultrasonic transducer. A treatment portion is configured on a distal side of the probe main portion along a longitudinal axis thereof. The treatment portion includes first direction surfaces disposed in a first direction intersecting the longitudinal axis and second direction surfaces that are adjacent to the first direction surfaces and are disposed in a second direction different from the first direction surfaces. The first direction surfaces further includes a plurality of surfaces formed into a staircase shape when being viewed from the treatment portion and one or more surfaces formed into a staircase shape when being viewed from a side opposed to the distal side of the treatment portion. The second direction surfaces further includes a plurality of surfaces formed into a staircase shape toward the distal side.

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.