57 results about "Electrosurgical unit" patented technology

An apparatus for performing a medical procedure including an electrosurgical unit (10) for generating radiofrequency energy, an interventional wire (2, 2', 2'', 2''') including a distal tip portion (17) configured to deliver the radiofrequency energy to tissue during the medical procedure and an activator (7) to activate delivery of the radiofrequency energy from the electrosurgical unit (10) to the interventional wire (2, 2', 2'', 2'''). The distal tip portion (17) of the interventional wire (2) includes a core wire in a tubular structure. A distal tip structure or element at the end of the core wire delivers the radiofrequency energy to tissue.

1. Name of the product in this design: High-frequency electrosurgical unit (Type A). 2. Intended use of this design: for soft tissue resection and coagulation. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

An electrosurgical unit configured to regulate a RF input signal applied to an electrosurgical device, the electrosurgical unit including a PWM circuit to produce a DC voltage responsive to a control signal; an RF waveform generator configured to generate an RF waveform based at least in part on the DC voltage; a transformer configured to transform the RF waveform to the RF input signal in a forward direction across the isolation barrier and transform a leakage current to a feedback current in a reverse direction across the isolation barrier; and a control circuit configured to generate the control signal based at least in part on the first input signal and the second input signal, the control signal controlling a pulse width modulation of the PWM circuit to produce the RF input signal.

The present invention relates to a novel technique by which the length of an electrosurgical unit blade coming into direct contact with the skin of a patient can be easily adjusted, and is a technique related to a locking member enabling the length of a blade to be adjusted. Specifically, the locking member of the present invention enables the length of a blade to be adjusted using the principle of a lever.

The invention relates to the technical field of medical instruments, in particular to an attractable electrocoagulation and electroresection electrosurgical pencil. Comprising a scalpel head assembly, an electrode assembly, a suction assembly and a handle assembly, the electrode assembly comprises a control panel and an electrode tube, the control panel is integrated in the handle assembly, a control button is further arranged on the handle assembly, and the electrode tube is arranged in the handle assembly and extends in the axial direction of the handle assembly. The extending end of the electrode tube is the working end of the handle assembly, the tool bit assembly is detachably connected to the extending end of the electrode tube, and the suction assembly is arranged at the non-working end of the handle assembly and communicated with the electrode tube through a suction pipeline. The control panel is connected with a power line, the electrode assembly is electrically connected with an external electrotome main machine through the power line, and the electrode tube is communicated with an external negative pressure suction device through a suction pipeline. The device can realize efficient electrocoagulation and electroresection, and also has excellent anti-clogging characteristic.

A high-frequency electrosurgical unit for medical use includes an execution unit, a control unit, and a first suction tube. The execution unit has a blade body and a blade tip. The front end of the first suction tube is configured as an air inlet. At least one mounting portion is obliquely arranged on the first suction tube, and the mounting portion has a cavity. In this invention, by connecting the front end of the cavity to the air inlet, the execution unit is inserted from the rear end of the cavity, allowing the front end of the blade tip to extend exposed to the outside of the air inlet. This brings the air inlet closer to the blade tip, enabling the smoke to be drawn into the first suction tube immediately upon generation. Furthermore, by enclosing part of the blade body within the first suction tube and the other part within the mounting portion, the exposed blade body is reduced, thereby improving safety during use and achieving two benefits.

The invention provides an electrotome for operation, relates to the technical field of medical instruments, and realizes the technical scheme of injecting liquid into an electrotome main body by adopting different liquid injection modes in different working states, namely a non-blocking state and a blocking state by arranging a connecting component capable of being rotationally switched between the electrotome main body and an injection device. When the electrotome body is not blocked, a user can rotate the connecting component to a lifting state relative to the injection device, at the moment, liquid can be injected into the electrotome body by manually pushing the injection device, operation is easy and convenient, response is rapid, and the electrotome is suitable for conventional liquid injection scenes; when the electrotome is used, the connecting component can be rotated to the connecting state, the first threaded section on the injection device and the second threaded section on the connecting component form stable threaded connection, at the moment, a user can inject liquid into the electrotome body in a pressurized mode through threaded transmission in a rotating mode, and therefore a blocked part can be effectively dredged.

This utility model discloses a multi-functional electrosurgical unit with adjustable length and water injection capability. The distal end of the delivery tube is fixedly connected to the I-blade body via a connecting tube, and the proximal end of the delivery tube is fixed to the main handle. The proximal end of the O-blade body is fixedly connected to the distal end of the inner sheath tube, which is sleeved outside the delivery tube. The proximal end of the inner sheath tube is fixedly connected to the inner sheath handle, and the outer sheath tube is sleeved outside the inner sheath tube. The distal end of the outer sheath tube is limited by a ceramic head, and the proximal end of the outer sheath tube is fixedly connected to the outer sheath handle. The relative positions of the outer sheath handle and the main handle can be moved to adjust the overall blade extension length. The relative positions of the inner and outer sheath handles can also be moved to switch between the O-blade and I-blade functions. This solution can meet the surgeon's needs for different electrosurgical unit lengths during surgery and provide multiple functions in a single electrosurgical unit.

The present invention discloses a method for eliminating power distortion in a high-frequency electrosurgical unit. The method utilizes a microcontroller (MCU) and a power output circuit. The MCU collects the AD value (Uad) of the output power voltage and the AD value (Iad) of the feedback current from the power output circuit. The MCU then adjusts the pulse duty cycle (PWM) of the control signal based on the feedback values ​​(Uad and Iad). The power output circuit then outputs different power levels based on the input PWM. This method can reduce or even eliminate distortion caused by impedance variations, ensuring effective electrosurgical coagulation.

Systems, such as an electrosurgical unit, and method for use with an active electrode and a plurality of return electrodes are disclosure. An electrosurgical treatment is provided to tissue via the active electrode at a treatment site and a first return electrode of the plurality of return electrodes at the treatment site. An impedance measurement is received or determined of an impedance in the tissue between the active electrode at the treatment site and a second return electrode of the plurality of return electrodes at a site remote from the treatment site.

An apparatus for performing a minimally invasive medical procedure. The apparatus includes an elongated flexible conductive element, an activator unit, an interventional wire, and an accessory connector. The activator unit is connected to the elongated flexible conductive element and configured to selectively activate the delivery of radiofrequency energy. The interventional wire is electrically connected to the activator unit and configured to deliver radiofrequency energy during the minimally invasive medical procedure. The accessory connector is coupled to the elongated flexible conductive element and configured to connect the elongated flexible conductive element to an electrosurgical unit to deliver continuous, sinusoidal, low-amplitude alternating electrical current from the electrosurgical unit to the elongated flexible conductive element and to the interventional wire. The activator unit is selectively activatable to only deliver the continuous, sinusoidal, low-amplitude alternating electrical current from the electrosurgical unit to the interventional wire.

The utility model discloses a splashproof protective cover for surgical electric knife, including the loop and transparent cover cloth, loop outer wall is equipped with several transparent skeletons, and the skeleton is along the loop circumference interval distribution, and the cover cloth covers fixed on the skeleton and forms the protective cover, and the loop inner wall is equipped with the screw thread, and the loop sleeve joint is in the electric knife handle lower extreme with its screw thread connection, and the electric knife end projects the protective cover. Compared with the prior art, the utility model is easy to install, can effectively prevent liquid splash in the use surgical electric knife, and has smaller influence to the operation operation.

An apparatus for performing a medical procedure including an electrosurgical unit for generating radiofrequency energy, an interventional wire including a distal tip portion configured to deliver the radiofrequency energy to tissue during the medical procedure and an activator to activate delivery of the radiofrequency energy from the electrosurgical unit to the interventional wire. The distal tip portion of the interventional wire includes a core wire in a tubular structure. A distal tip structure or element at the end of the core wire delivers the radiofrequency energy to tissue.

A surgical robotic system includes an instrument drive unit having at least one motor and at least one power contact. The system also includes an electrosurgical generator configured to be coupled to the instrument drive unit. The electrosurgical generator includes a generator circuit configured to be coupled to at least one power supply contact and generate electrosurgical energy. The system further includes an electrosurgical instrument configured to be coupled to the instrument drive unit and the electrosurgical generator. The electrosurgical instrument may be actuated by an instrument drive unit and may be powered by an electrosurgical generator.

An electrosurgical system having an electrosurgical device, an accessory charging circuit, and an electrosurgical unit is disclosed. The electrosurgical device is operable in at least one of a monopolar mode and a bipolar mode. The electrosurgical unit electrically is coupled to the electrosurgical device and the accessory charging circuit. The electrosurgical unit provides one of a monopolar RF energy signal and a bipolar RF energy signal to the electrosurgical device corresponds with an activated mode and a bipolar signal to the accessory charging circuit.

Various examples of the disclosed subject matter include systems and methods of controlling a flow rate of a smoke evacuation system. In one example, the smoke evacuation system includes an electrosurgical unit (ESU) to provide power to an electrosurgical tool within a surgical site. A monitoring device measures one or more electrical parameters from the electrosurgical tool, and a controller estimates an amount of smoke generated within the surgical site based on the electrical parameters. The controller sets a flow rate of a suction device to remove gases within the surgical site. The flow rate of the generated gases removed is based on the estimated amount of smoke generated. The controller also controls a flow rate of insufflation gases generated by an insufflation device, where the flow rate of the insufflation gases is substantially equal to the flow rate of the gases generated by the suction device. Other systems and methods are disclosed.

1. The name of this design product: Medical electrosurgical unit. 2. Application of this design product: for medical devices. 3. The key design points of this design product are the combination of shape, pattern and color. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1. 5. The design for which protection is sought includes color.

The invention discloses a bipolar electrotome tissue closure judgment method and system, and belongs to the technical field of high-frequency surgical instruments.The method comprises the steps that firstly, voltage and current signals and the temperature of an electrode working end are collected, instantaneous parameters are calculated through Hilbert transformation, and temperature compensation is conducted; identifying and grading three types of interference caused by saline water scouring, and adaptively selecting moving average, wavelet threshold or Kalman filtering according to grades; then extracting a multi-dimensional feature fusion interference level construction vector, and inputting the vector into an extreme gradient lifting model to obtain a tissue closing probability; and finally comparing with a dynamic threshold value, and controlling the energy output of the electrotome. The matching system comprises a signal acquisition module, a signal processing module, an intelligent decision-making module and an energy control module. The problems of signal distortion and high misjudgment rate under flushing of normal saline are effectively solved, the accuracy and anti-interference performance of tissue closure judgment are improved, and safety and reliability of an operation are guaranteed.

The purpose of the present invention is to provide a smoke and liquid discharge tube equipped with a nozzle, said tube enabling the position of a suction port to be adjusted on a forceps part such as an electrosurgical unit (forceps) and being capable of simultaneously suctioning and discharging both liquid and surgical smoke such as smoke or mist.　A smoke and liquid discharge tube equipped with a nozzle (1) according to the present invention comprises a tube body (2) in which a main lumen (3), which has open front and rear ends and into which a medical device is inserted and retained in the axial direction, and a suction lumen (5), which has open front and rear ends and is positioned inside in the axial direction, are formed in parallel. On the outer periphery of the front end of the tube body (2) where the suction lumen (5) is formed, a nozzle part (6) that has an arc-shaped cross section and protrudes and extends forward by a prescribed length from the front-end opening of the main lumen is formed so as to be bendable. A metal wire is embedded in the nozzle part, the metal wire bending the nozzle part and retaining the shape thereof. The front-end opening of the nozzle part is formed as a first liquid discharge port (8). A second liquid discharge port (10) that opens to communicate with the suction lumen is formed in the outward-facing peripheral wall of an axially intermediate part, and an exhaust port (11) that opens to communicate with the suction lumen is formed in the inward-facing peripheral wall near the front-end opening of the main lumen on the rear-end side of the nozzle part.

1. Name of the product in this design: Cutting electrode tip (flag shape). 2. Purpose of this design: This design is intended for use in conjunction with a high-frequency electrosurgical unit for cutting or coagulation during surgical procedures. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

This application relates to the field of biomedical technology and specifically discloses a system, preparation method, and application of an acute lung injury model suitable for evaluating the repair efficacy of nano-occluding membranes. This method, based on the synergistic mechanism of mechanical ventilation and thermal injury, achieves periodic dynamic stretching of lung tissue through a rapid inflation mode. Combined with the thermal effects of an electrosurgical unit, this model constructs an acute lung injury model with a dual-action coupling of "mechanical stretch and thermal injury." Compared to traditional modeling methods such as chemical or biological induction, this method can precisely control the size of lung lobe wounds and achieve standardized simulation of the pathological characteristics of traumatic alveolar rupture. This overcomes technical bottlenecks such as uncontrollable wound morphology and deviations in the localization of the injury site in traditional models, providing a highly reproducible experimental vehicle for evaluating the sealing performance and repair efficacy of nano-occluding membranes under dynamic pressure environments.

In a robotic surgical system, an instrument includes an end effector, a supply line that supplies electric energy to the end effector and a switch element that turns on / off the supply line, an electrosurgical unit is configured to supply electrical energy to the instrument, and one or more control devices are configured to transmit a signal to the switch element while an input is received by an input device, wherein the switch element is configured to turn on the supply line while the signal from the one or more control devices is received.

This invention relates to a visual medical probe, comprising an outer probe tube, an injection tube, an examination lens, an image guide bundle, a light-transmitting lens, and a light guide beam. The light-transmitting lens is disposed at the front end of the outer probe tube, the examination lens is disposed on the light-transmitting lens, the light guide beam passes through the outer probe tube and connects to the light-transmitting lens, and the image guide bundle passes through the outer probe tube and connects to the examination lens. An injection tube is located inside the outer probe tube, with its front end inserted into the light-transmitting lens, the front end of the injection tube being flush with the front surface of the light-transmitting lens. The beneficial effects of this invention are: the use of a small-diameter, moderately flexible outer probe tube with an examination lens at the front end is particularly suitable for fistula exploration; the injection tube allows for drug irrigation within the fistula and cleaning of the examination lens; the splashing tongue at the probe tip significantly improves the effectiveness of fistula irrigation and lens cleaning; the injection tube also allows for biopsy of the fistula and internal opening tissue for pathological examination; and when used in conjunction with a medical laser or high-frequency electrosurgical unit, it enables precise minimally invasive treatment of anal fistulas. This invention significantly improves the diagnostic and treatment methods for anal fistulas and other fistula tracts.

An electrosurgical unit for use with a crossing member is disclosed. The electrosurgical unit includes a controller and device terminals. The device terminals include an active terminal and a measurement terminal. The device terminals couple to the crossing member. The controller generates a radiofrequency (RF) energy signal that is delivered to the active terminal. The RF energy signal is configured to cross tissue. The controller also determines whether the crossing member has crossed the tissue via a determined change in a response to a measurement signal received at the measurement terminal and generates an indication of tissue crossing based on the determined change in the response to the measurement signal.

An electrosurgical unit for use with a crossing member is disclosed. The electrosurgical unit includes a controller and device terminals. The device terminals include an active terminal and a measurement terminal. The device terminals couple to the crossing member. The controller generates a radiofrequency (RF) energy signal that is delivered to the active terminal. The RF energy signal is configured to cross tissue. The controller also determines whether the crossing member has crossed the tissue via a determined change in a response to a measurement signal received at the measurement terminal and generates an indication of tissue crossing based on the determined change in the response to the measurement signal.

A smooth muscle stimulation device is intended for use with any one of a variety of electrosurgical units (ESU's) of the type used in tissue resection and other procedures that risk damage to non-target tissues. The smooth muscle stimulation devices typically include an enclosure with stimulation circuitry configured to generate a stimulatory electrical signal which when delivered to a target anatomy induces an observable response in the target anatomy during a medical procedure. An input connector on the enclosure detachably couples to a power output of the ESU, and an output connector on the enclosure detachably couples to an electrosurgical tool. Switching circuitry within the enclosure selectively connects either the power output of the ESU or the stimulatory electrical signal of the stimulation circuitry to the output connector in response to user input.

The utility model relates to the technical field of medical instruments, and provides a water injection control structure for a high-frequency electrotome and a water injection type high-frequency electrotome. The water injection control structure comprises an inductive switch used for controlling a water pump motor to be powered on, and the control end of the inductive switch is connected with the output end of a signal processing circuit; the input end of the signal processing circuit is connected with the coil, and the coil is wound on the periphery of an electrotome coagulation cutting cable; the signal processing circuit controls the on-off of the inductive switch according to the induced voltage generated by the coil. And mutual exclusion of a high-frequency electrotome coagulation cutting function and a water injection function can be realized.

1. Name of the product in this design: Electrosurgical knife. 2. Purpose of this design: for use in surgery, and belongs to medical devices. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1. 5. The top view has been shown in perspective view 1, so the top view is omitted.

The present invention discloses a fully automatic measurement system for leakage current of a high-frequency electric knife, belonging to the field of leakage current detection. The system collects information data of the high-frequency electric knife set power, effective wire length, effective wire cross-sectional area, working voltage and effective electrode resistance through a set calibration value acquisition module; the above-collected information data is placed in a data cache module for caching, so that the data processing module can retrieve data from the data cache module for processing at any time; the data processing module retrieves data from the data cache module, processes the data, and obtains the leakage current size. The present invention can not only measure the leakage current size and type in real time. Moreover, when an abnormal leakage current is detected and measured, the leakage current can be suppressed by controlling the circuit or regulating the working voltage of the high-frequency electric knife equipment to avoid the abnormal leakage current causing harm to the human body.

An electrosurgical instrument includes jaws having an electrode configuration utilized to electrically modify tissue in contact with one or more electrodes. The instrument is removably connectable to an electrosurgical unit via an electrosurgical connector extending from the instrument and a receptacle on the electrosurgical unit. The electrosurgical instrument is rotatable without disrupting electrical connection to the electrodes of the jaws. One or more of the electrodes is retractable. The electrosurgical unit and instrument optimally seals and / or cuts tissue based on identifying the tissue and monitoring the modification of the tissue by the application of radio frequency energy.