155 results about "Ultrasonic Surgery" patented technology

An ultrasonic surgical apparatus comprises an ultrasonic transducer for generating vibration in response to a drive signal to be given, and a treatment device having a probe to which the vibration is transferred from the ultrasonic transducer to effect treatment with the vibration. This device further comprises a signal generator for generating an AC signal for driving the ultrasonic transducer, and a modulator for modulating the AC signal generated by the signal generator to produce a drive signal to be given to the ultrasonic transducer.

An ultrasonic surgical blade includes a body having an external surface, at least one cutting edge, and a distal end. In at least one embodiment, the cutting edge can be defined by first and second surfaces which define an angle therebetween. In various embodiments, at least a portion of the cutting edge comprises a sharp point. In other embodiments, at least a portion of the cutting edge and surface comprise a sharp point and or a beveled surface.

An ultrasonic surgical system has an ultrasonic unit including an instrument operatively connected to an ultrasonic generator, wherein the instrument has an ultrasonic end effector on the distal end of a shaft. The system further includes a positioning unit including a movable arm adapted for releasably holding the instrument, whereby an operator may direct the positioning unit to position the end effector at a surgical site inside a body cavity of a patient for performing a plurality of surgical tasks. The system further includes a control unit operatively connected to the ultrasonic and positioning units, wherein the control unit is programmable with a surgical subroutine for performing the surgical tasks. The system further includes a user interface operatively connected to the control unit for initiating an operative cycle of the surgical subroutine such that the surgical tasks are automatically performed during the operative cycle.

An ultrasonic surgical instrument is provided. The ultrasonic surgical instrument includes a housing having an elongated shaft extending therefrom. The shaft has a jaw member disposed at a distal end thereof. The jaw member is movable between an open configuration and a clamping configuration and includes a tissue contacting surface thereon. A cutting blade extends from a distal end of the shaft and operably couples to the housing and adjacent the jaw member to treat tissue. At least one sensor is configured to sense at least one operational parameter of the ultrasonic surgical instrument. At least one controller in operable communication with the at least one sensor is configured to terminate delivery of ultrasonic energy to the cutting blade when the at least one sensor senses the at least one operational parameter.

An ultrasonic surgical system includes a handpiece having an ultrasonic vibrator; and a probe connected to the ultrasonic vibrator. The handpiece includes a first storage unit that stores first determination criterion information being a criterion of whether an abnormality occurs in the ultrasonic surgical system. The probe includes a second storage unit that stores second determination criterion information as a criterion of whether an abnormality occurs in the ultrasonic surgical system. The ultrasonic surgical system also includes a control unit that stops driving the ultrasonic vibrator based on the first and second determination criterion information.

A relay device relays signals between a single switch unit and each of an ultrasonic surgical device that supplies an ultrasonic signal and an electrosurgical device that supplies a high-frequency signal, the switch unit being used for on/off control of outputs of the ultrasonic surgical device and the electrosurgical device, the ultrasonic surgical device and the electrosurgical device being connected to an ultrasonic/high-frequency treatment instrument capable of performing an ultrasonic treatment using ultrasonic vibration in accordance with the supplied ultrasonic signal and performing a high-frequency treatment in accordance with the supplied high-frequency signal. The relay device includes a switch detection unit for detecting the turn-on/off of the switch unit, a switch element for outputting a switch signal, which is used for on/off control of outputs of the ultrasonic signal and the high-frequency signal, to each of the ultrasonic surgical device and the electrosurgical device in accordance with a detection output of the switch detection unit, and a control unit for performing on/off control of the switch signal of the switch element in accordance with the detection output to control at least one of an output timing and an output mode of each of the ultrasonic signal and the high-frequency signal.

Disclosed is an ultrasonic surgical device having a distally/proximally movable fluid management system consisting of single lumen or multiple lumens. The invention provides for the delivery of irrigation fluid or the removal of fluid, debris or vapor from the tissue-effecting portion of the blade while minimizing the loading on the blade. The blades of the surgical device, when excited at a natural blade system frequency, will have modal shapes characterized by longitudinal, transverse and/or torsional motion and will have nodal locations for these motions at positions along the tissue effecting length of the blade. The instrument is designed to allow for the fluid management system to be positioned at one or more motion nodes to facilitate efficient removal of tissue or fluid, which tends to accumulate at such nodes of the ultrasonic surgical blades.

When a probe unit and a sheath unit are coupled to each other, an engaging portion of the probe unit is coupled directly to a vibrator unit through an engaging hole portion if the probe unit is combined with a proper sheath. If the probe unit is combined with an improper sheath, the engaging portion is not allowed to pass through the engaging hole portion. Thus, the probe unit and the vibrator unit can be prevented from being wrongly assembled, and only those parts which wear easily can be replaced. And the same protection system can be applied to an engagement of a sheath unit and a body of ultrasonic surgical instrument.

An ultrasonic surgical system utilizes a digital control system to generate ultrasonic drive current for transducers that are located in a hand piece and are attached to a surgical scalpel or blade so as to vibrate the blade in response to the current. The digital control includes a digital signal processor (DSP) or microprocessor; a direct digital synthesis (DDS) device; a phase detection logic scheme, a control algorithm for seeking and maintaining resonance frequency; and design scheme that allows to regulate current, voltage, and power delivered to an ultrasonic device. The system allows the power versus load output curve to be tailored to a specific hand piece; the components of the digital system are much less sensitive to temperature variations; and the digital system provides increased flexibility in locating the resonance frequency of the blade and running diagnostic tests.

An ultrasonic-surgical and electrosurgical system includes an ultrasonic surgical device and an electrosurgical device which supply an ultrasonic signal and a high-frequency signal, respectively, to an ultrasonic/high-frequency treatment instrument capable of performing an ultrasonic treatment and a high-frequency treatment, and a relay device which is built in one of the devices including: a switch detection unit for detecting turn-on/off of a switch unit which performs on/off control of operations of the devices; a switch element for outputting a switch signal which is used for on/off of outputs of the ultrasonic signal and the high-frequency signal to each of the devices in accordance with the detection output; and a control unit for performing on/off control of the switch signal to control at least one of an output timing and an output mode of each of the signals.

An ultrasonic clamp coagulator assembly that is configured to permit selective cutting, coagulation and clamping of tissue during surgical procedures. An elongated portion of the instrument can be configured for endoscopic applications and has an outside diameter of less than 6 mm. The construction includes a clamping mechanism, including a clamp arm pivotally mounted at the distal portion of the instrument, which is specifically configured to create a desired level of tissue clamping forces. The clamping mechanism includes a two-piece pad design and pad material that enables the higher tissue clamping forces and a force-limiting mechanism that effectively smoothes out abusive tissue forces.

An ultrasonic surgical instrument having a handle with a finger actuator, and more particularly, an ultrasonic surgical device adapted to be held by a surgeon and fingers-operated with precise movements while opening and closing an ultrasonic instrument while meeting the ergonomic requirements of the surgeon with regard to comfort and imparting the surgeon with an enhanced dextral control for easy maneuverability of the instrument. The instrument incorporates a thimble-shaped lever at the distal end of the handle for actuating the clamp arm of the ultrasonic surgical instrument, and votator structure for selective rotation of the surgical device whereby the ergonomic thimble-shaped lever and pencil grip provide the physician with an improved degree of control, greater comfort in manipulating the instrument, and the ability to perform blunt dissections.

An ultrasonic surgical instrument is provided. The ultrasonic surgical instrument includes a housing having an elongated shaft extending therefrom. The shaft defines a longitudinal axis therethrough and has a jaw member disposed at a distal end thereof. The jaw member is movable between an open configuration and a clamping configuration. A cutting blade extends from a distal end the shaft and operably couples to the housing and adjacent the jaw member. The cutting blade includes top and bottom portions. The top portion configured to cool the bottom portion while the cutting blade treats tissue.

An ultrasonic surgical instrument includes at least two tools each having a respective operating head with an operative surface or edge. At least one source of ultrasonic mechanical vibratory energy is provided which produces at least two vibration modes out of phase with one another. The tools are each connected to the source of ultrasonic mechanical vibratory energy for enabling transmission of a respective one of the vibration modes into the respective tool so that the tools are driven out of phase with one another.

The invention discloses an ultrasonic surgery auxiliary navigation system based on binocular vision, and belongs to the field of vision positioning technology. According to the invention, on the basis of the binocular vision positioning technology, a binocular vision positioning device and an ultrasonic probe are fixed together by a coordinate system calibration device, meanwhile points under the world coordinate system are subjected to imaging, coordinates of the imaging in the respective coordinate systems are calculated, then the transformational relation of the respective coordinate systems is calculated, and surgical instruments and foci are fused by the transformational relation in the same three-dimensional coordinate system for display in an image work station. The technical scheme of the invention overcomes the problems of conventionally, a puncture intervention surgery cannot be guided continuously in real time and the operation is not flexible and convenient enough, the surgery auxiliary guidance is carried out by using the positioning device based on machine vision and by an image processing algorithm, and the whole system has the advantages of high speed, high precision, small occupation space and so forth.