KR20200094909A - High frequency treatment device and treatment method based on power value difference based control - Google Patents

Abstract

The present invention relates to a high-frequency treatment device and a high-frequency treatment method based on power value difference-based control, capable of performing a treatment by introducing most suitable high-frequency waves according to a condition of a diseased area. According to the present invention, the high-frequency treatment device based on the power value difference-based control includes: a high-frequency energy generation unit; a high-frequency energy control unit; an electrode unit including an active electrode and a return electrode for introducing high-frequency energy to a diseased area; an active electrode voltage current detection unit for measuring a voltage value and a current value of the active electrode; and a return electrode voltage current detection unit for measuring a voltage value and a current value of the return electrode.

Description

High frequency treatment device and treatment method based on power difference-based control {HIGH FREQUENCY TREATMENT DEVICE AND TREATMENT METHOD BASED ON POWER VALUE DIFFERENCE BASED CONTROL}

The present invention relates to a high-frequency treatment apparatus and a treatment method based on power difference-based control, and more particularly, a difference value between an active electrode power value (P1) and a power value (P2) of a return electrode when the current value is variable. By measuring (P1-P2) and calculating the impedance value of the affected area according to the difference power value (P1-P2), the power value difference-based control that can induce effective treatment and treatment by controlling the appropriate frequency output to the affected area of the patient It relates to a high-frequency treatment apparatus and treatment method by.

The basics of electrosurgical principles are basic electrical concepts, namely current, voltage, electric circuit, and impedance (resistance). Electrical flow, or current, is a negative charge flowing from one atom to another through an electrical circuit formed by a path with minimal resistance, which goes to a neutral ground state. Impedance (ohms) is a measure of resistance against current. The product of current (I) and voltage (V) is power (p) (watts). When the voltage, which is the driving force of the current, is at most 200 (peak voltage, Vp), that is, when the voltage spike exceeds 200, it is possible to produce a current density sufficient for electrical cutting in living tissue. Some electrosurgical devices allow the voltage to remain fixed at all times below 200 Vp, regardless of the power level. In this case, only tissue coagulation occurs and tissue cutting cannot be performed regardless of the power level. do. This is commonly indicated as “soft coaguation” in unipolar circuits and is a characteristic of bipolar circuit devices. Voltages above 200 Vp can produce current densities sufficient for electrical tissue cutting and overcome the impedance of the tissue to allow tissue coagulation to deeper regions.

Ultimately, the effect or change of the tissue to be treated with the electrosurgical device is determined by the current density. The density of this current is affected by several variables. Some of these variables can be controlled by the user of the electrosurgical device and some cannot be controlled by the user's intention. One of the latter is tissue impedance, which is highly dependent on the composition of the tissue in a specific area (the area to be treated), that is, the moisture content. For example, tissues containing a lot of moisture, such as blood or intestinal wall, have low impedance and are less resistant to current flow than fat or bone. It increases the impedance that reacts with fibrosis at the base of the peptic ulcer, eventually requiring higher power to achieve the desired tissue effect.

In addition to the composition of the tissue, the amount of tissue to be treated is also important. In the case of energizing the tissue to be treated at one time, when the amount of tissue is large, the current density will be lowered and as a result, the rate of heating will be slow. In addition, it may vary depending on the shape and size of the energized appendage. In the case of a ball-type wide-end appendage or a flat-shaped forceps jaw, the current density will be low because the current flows into the tissue through a wide electrode. On the contrary, in the case of a relatively sharp and narrow tip such as a snare or sphincter incision, the current density will be high because the current flows through the narrow electrode to the tissue. Thus, the former accelerates coagulation and the latter accelerates cutting.

Some modern devices (e.g., ErbeEndocut, Erbe, Marietta, GA and ValleyLab Instant Response, Valleylab, Boulder, CO) allow for highly selectively characterized microprocessor controlled power supplies.

Among them, the “Endocut” method has the function of rapidly adjusting the voltage in response to the changing impedance of the tissue and controlling the speed of tissue cutting based on intermittent or pulsating output. In the cutting method, the “Instant Response” method has the function of supplying the selected power very quickly when the impedance of the tissue is low at the time of cutting, and then maintaining the power constant regardless of changes in impedance. In order to use these functions best, it is important to understand the intention of the mode and apply it to the appropriate procedure.

An object of the present invention is to measure the power value (active power value and regression power value) of the affected part when the current value varies during a patient procedure using high frequency, and the impedance value of the affected part using the difference value of the measured power value. It is to provide a high frequency electric therapy apparatus and a treatment method capable of performing a procedure by controlling a high frequency value suitable for the condition of the affected area by calculating

The present invention for achieving the above object relates to a high-frequency electric therapy device for treating an affected area by applying a high frequency to a patient's body when the current value is variable,

A high frequency energy generator for generating high frequency energy, a high frequency energy controller for controlling the output of the high frequency energy generated by the high frequency energy generator, and receiving high frequency energy whose output is adjusted from the high frequency energy controller. An active electrode and an electrode part including a return electrode to inject high-frequency energy, an active electrode voltage current detector that measures a voltage value (V1) and a current value (I1) of the active electrode, and a voltage value (V2) of the return electrode. It may include a return electrode voltage current detector for measuring I2).

In addition, the high frequency energy control unit, based on the voltage value (V1) and the current value (I1) of the active electrode measured by the active electrode voltage current detection unit, the power value (P1) and the active power value (P1) of the active electrode. And the power P2 of the return electrode based on the current value I2, and the impedance value of the affected part calculated using the difference between the active power value and the return power value (P1-P2) (Z=(P1) -P1) The output of high frequency energy can be controlled according to X (V1-V2)²).

In addition, the high frequency energy controller may control the input of high frequency energy by controlling the high frequency energy generator when the difference value (P1-P2) or the calculated impedance value of the affected part is equal to or greater than a predetermined reference value. have.

In addition, a preferred frequency value of the reference value or the calculated impedance value may be any one or more high frequency values among 100 kHz, 250 kHz, 400 kHz, 500 kHz, 1 MHz, and 5 MHz.

On the other hand, the present invention detects the voltage/current of the active electrode and the voltage/current of the return electrode in the affected part of the patient when the current value is variable, and uses the difference value of the power value based on the detected voltage/current value. It relates to a high-frequency electrical treatment method for treating and treating the affected area of a patient by calculating the impedance value of the affected area and applying effective high-frequency energy based on the calculated impedance value, and measuring the voltage/current value of the active electrode and the return electrode. Step, calculating a difference value (P1-P2) between the active power (P1) and the return power (P2) using the measured voltage/current values of the active electrode and the return power, the calculated difference value (P1-P2) It may include calculating an impedance value of the affected part by using and controlling the output of high frequency energy based on the calculated impedance value.

In addition, if the difference value (P1-P2) or the calculated impedance value between the calculated active power (P1) and the return power (P2) is equal to or greater than the reference value, the output of high frequency energy is stopped. I can.

In addition, a preferred frequency value of the reference value or the calculated impedance value may be any one or more high frequency values among 100 kHz, 250 kHz, 400 kHz, 500 kHz, 1 MHz, and 5 MHz.

The present invention calculates the impedance of the affected area by measuring the difference in the power value of the affected area, and controls the output of the high frequency inputted to the affected area according to the calculated value. There are advantages to be able to do it effectively.

1 is a block diagram showing the configuration of a high-frequency electric therapy apparatus according to an embodiment of the present invention.
2 is a flow chart showing a radio frequency treatment method according to an embodiment of the present invention.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. Prior to describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted.

In addition, high frequency in the present invention means a radio transmission frequency (300kHz ~ 1,200kHz) in the dictionary meaning. However, in RF for therapeutic purposes, it means high-frequency current. General commercial AC electricity alternately changes to + and-60 times per second (60Hz), but it requires an AC current of 03Mhz to several tens of Mhz to use for treatment. In other words, when high-frequency electricity is applied to living tissues, ions in cells move from cathode to anode, generating tremendous frictional heat by themselves.

1 is a block diagram showing the configuration of a high-frequency electric therapy apparatus according to an embodiment of the present invention.

Referring to FIG. 1, the present invention provides a high-frequency energy generation unit 100 for generating high-frequency energy, a high-frequency energy control unit 200 for controlling the output of high-frequency energy generated by the high-frequency energy generation unit 100, and the high-frequency energy. An electrode unit 300 including an active electrode 310 and a return electrode 320 for receiving the high-frequency energy whose output is adjusted from the control unit 200 and injecting the high-frequency energy to the affected area when contacting the affected area, the active A voltage/current detection unit including an active electrode voltage/current detection unit 410 for measuring the voltage/current value of the electrode 310 and a return electrode voltage/current detection unit 420 for measuring the voltage/current value of the return electrode ( 400) may be included.

The high frequency energy generation unit 100 may generate a high frequency required to operate on the affected part of the patient.

The high frequency energy control unit 200 may adjust the output of the high frequency energy according to the patient's condition by adjusting the output of the high frequency generated by the high frequency energy generation unit 100.

The electrode unit 300 is in contact with the affected area to input high-frequency energy, and may be configured in various forms according to the patient's affected area and surgical conditions.

Meanwhile, the electrode part 300 may include an active electrode 310 and a return electrode 320, and the active electrode 310 and the return electrode 320 may transmit high-frequency energy into the tissue of the affected area.

The voltage/current detection unit 400 includes an active electrode voltage/current detection unit 410 for measuring an active electrode voltage/current value, and a return electrode voltage/current detection unit 420 for measuring a voltage/current value of the return electrode. can do.

That is, when the current value is variable, the voltage/current detection unit 400 measures the voltage/current values of the active electrode 310 and the return electrode 320 to measure the high frequency output of the above-described high frequency energy control unit 200. Provides information necessary to measure the impedance value of the affected area to be adjusted. This is because the impedance value of the affected part varies depending on the state of the affected part. That is, the state of the affected part before the high frequency is applied is not large due to blood and moisture (P1), but the affected part is heated as high frequency is applied to the affected part. As it solidifies, the impedance value becomes larger and larger than before the high frequency is applied (P2). (Z=(P1-P2) X (V1-V2)²)

Accordingly, the control unit calculating an impedance value using a voltage/current value of the active electrode of the affected area and a voltage/current value difference value of the return electrode, the impedance value of the affected area reaches a predetermined therapeutic impedance value (reference value). In this case, by controlling the output frequency value of the high frequency to adjust the output of the high frequency applied to the affected area, it is possible to inject the most suitable high frequency for the treatment and procedure of the affected area.

For example, when the current value is variable, the high frequency energy controller includes a voltage value (V1) and a current value (I1) of the active electrode measured by the active electrode voltage/current detection unit 410, and the return electrode voltage/ The active power and the return power value and the difference value (P1-P2) are calculated based on the return electrode voltage value (V2) and the current value (I2) measured by the current detection unit 420, and the impedance is calculated based on the calculated difference value. Since the state of the affected part can be detected by calculating the change in the value of, it is possible to control the high frequency output that is most appropriately applied to the state of the affected part.

In addition, the high frequency energy control unit 200, the difference value (P1-P2) between the voltage / current value (P1) of the active electrode (310) and the voltage / current value (P2) of the regression electrode (320) is predetermined. If the value is equal to or greater than the reference value, the high frequency energy generation unit 100 may be controlled to stop the high frequency energy output.

The reference value is a high frequency energy value calculated by an experiment, and a preferred frequency value may include any one or more of 100 kHz, 250 kHz, 400 kHz, 500 kHz, 1 MHz, and 5 MHz. This is to prevent medical accidents caused by excessive high-frequency output.

2 is a flow chart showing a radio frequency treatment method according to an embodiment of the present invention.

Referring to FIG. 2, in the present invention, first, an active electrode value and a voltage/current value of a return electrode are measured on the affected part of a patient (S500), and a difference value between the measured values is calculated (S510). In addition, active power P1 and regression power P2 and difference values P1-P2 are calculated based on the detected voltage/current values (S520).

Thereafter, the impedance value is calculated using the calculated power value (Z=(P1-P1) X (V1-V2)²) (S530), and effective high-frequency energy is applied by the calculated impedance value to Can be treated and performed.

That is, the present invention is a step of measuring the voltage/current values of the active electrode and the return electrode of the patient's affected part (S500), and calculating the difference value between the measured voltage/current values of the active electrode and the return electrode (S510). , Calculating a difference value between active power (P1) and regression power (P2), and active power (P1) and regression power (P2) using voltage/current values of the active electrode and the return electrode of the affected part. There is (S520).

In addition, it may include calculating an impedance value of the affected part using the calculated activation/return voltage, current, and power values (S530), and controlling the output of high-frequency energy based on the calculated impedance value (S550). .

In particular, when the calculated power values P1 and P2 or the impedance value Z are equal to or greater than a preset reference value, the output of high-frequency energy may be controlled (S540).

The frequency value of the preset reference value may be set to any one or more high frequency values among 100 kHz, 250 kHz, 400 kHz, 500 kHz, 1 MHz, and 5 MHz. This is to prevent medical accidents caused by excessive high frequency output.

Optimal embodiments have been disclosed in the drawings and specification above, and terms used herein are used only for the purpose of describing the present invention, and those used to limit the meaning or the scope of the present invention described in the claims are no. Therefore, those of ordinary skill in the art will be able to make various modifications and other equivalent embodiments therefrom, and thus, the true technical scope of the present invention should be determined by the technical spirit of the appended claims.

100: high frequency energy generation unit 200: high frequency energy control unit
300: electrode part 310: active electrode
320: return electrode 400: voltage detection unit
410: active electrode voltage/current detection unit
420: return electrode voltage/current detection unit

Claims (7)

It relates to a high-frequency electric therapy device for treating an affected part by applying a high frequency to the patient's body when the current value is variable,
A high frequency energy generation unit generating high frequency energy;
A high frequency energy control unit for controlling the output of the high frequency energy generated by the high frequency energy generation unit;
An electrode unit including an active electrode and a return electrode for receiving the high-frequency energy whose output is adjusted from the high-frequency energy control unit, and for injecting the high-frequency energy to the affected area when contacting the affected area;
An active electrode voltage and current detector for measuring a voltage value V1 and a current value I1 of the active electrode; And
A high-frequency treatment apparatus based on power value difference-based control comprising a return electrode voltage and current detector for measuring a voltage value (V2) and a current value (I2) of the return electrode. The method of claim 1,
The high frequency energy control unit,
Based on the voltage value (V1) and current value (I1) of the active electrode measured by the active electrode voltage current detector, the power value (P1) of the active electrode, the voltage value of the return electrode (V2) and the current value (I2) Measure the power (P2) of the return electrode based on,
Controls the output of high frequency energy according to the impedance value of the affected part (Z=(P1-P1) X (V1-V2)²) calculated using the difference value (P1-P2) between the active power value and the return power value. High-frequency treatment apparatus by control based on the difference in power value, characterized in that. The method according to claim 1 or 2,
The high frequency energy control unit,
When the difference value (P1-P2) or the calculated impedance value of the affected part is equal to or greater than a predetermined reference value, the RF energy generation unit is controlled to stop the input of high frequency energy. . The method of claim 3,
The frequency value of the reference value or the calculated impedance value is a high frequency treatment device based on power value difference-based control, characterized by any one or more high frequency values among 100 kHz, 250 kHz, 400 kHz, 500 kHz, 1 MHz, and 5 MHz. . When the current value is variable, the voltage/current of the active electrode and the voltage/current of the return electrode are detected on the affected part of the patient, and the impedance value of the affected part is used using the difference between the power value based on the detected voltage/current value. It relates to a high-frequency electrical treatment method for treating and treating the affected part of a patient by calculating and applying effective high-frequency energy according to the calculated impedance value,
Measuring voltage/current values of the active electrode and the return electrode;
Calculating a difference value (P1-P2) between the active power (P1) and the return power (P2) using the measured voltage/current values of the active electrode and the return power;
Calculating an impedance value of the affected part by using the calculated difference values P1-P2; And
High frequency treatment method by power value difference-based control comprising the step of controlling the output of the high frequency energy based on the calculated impedance value. The method of claim 5,
The difference value (P1-P2) or the calculated impedance value (Z=(P1-P1) X (V1-V2)²) between the calculated active power (P1) and the return power (P2) is the same as the preset reference value. Or, if it is greater than the reference value, the output of high frequency energy is stopped. The method of claim 6,
The frequency value of the reference value or the calculated impedance value is a high frequency treatment method by power value difference-based control characterized by any one or more high frequency values among 100 kHz, 250 kHz, 400 kHz, 500 kHz, 1 MHz, and 5 MHz. .

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