CN103424603A - Electrosurgery output power detection device - Google Patents
Electrosurgery output power detection device Download PDFInfo
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- CN103424603A CN103424603A CN2013101932051A CN201310193205A CN103424603A CN 103424603 A CN103424603 A CN 103424603A CN 2013101932051 A CN2013101932051 A CN 2013101932051A CN 201310193205 A CN201310193205 A CN 201310193205A CN 103424603 A CN103424603 A CN 103424603A
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Abstract
An electrosurgery output power detection device is used to detect the output power applied by an electrosurgery instrument to a tissue on the high frequency and large power conditions, and is characterized by comprising a voltage detection circuit used for detecting an output voltage signal of the electrosurgery instrument, a current detection circuit used for detecting an output current signal of the electrosurgery instrument, and a control unit used for calculating the signals detected by the voltage detection circuit and the current detection circuit and adjusting the output power of the electrosurgery instrument, wherein the input circuits, the rectifying circuits and the filter circuits form a voltage measuring circuit and a current measuring circuit respectively and transform the AC signals into the DC voltage signals, and the control unit calculates to obtain an output voltage and an output current, further calculates the impedance of the tissue, and adjusts the output power of the electrosurgery instrument according to the impedance.
Description
Technical field
The invention belongs to intelligent electric surgical operating instrument field, relate to a kind of electrosurgical output power pick-up unit.
Background technology
Electrosurgical instrument is a kind of high-frequency high-power instrument, its action principle is that electromagnetic energy is converted into to the thermal effect to biological tissue, cause the significantly intensification of tissue within the extremely short time, cause and organize the multiple phenomenons such as moisture vaporization, protein denaturation, purposes such as reaching closed, cut and condense.Than traditional operating theater instruments, Electrosurgical instrument realizes that cutting carries out with synchronizeing of condensing, and has reduced the situation of intraoperative hemorrhage.
Yet in Minimally Invasive Surgery, the restriction such as the visual field that the doctor is performed the operation, the scope of activities of operating theater instruments and space and at present a lot of electrosurgical unit do not have backfeed loop, and texts is difficult to realize auto-closing, cuts and condenses.In order to meet the needs of minimally invasive surgery, reduce human intervention, Electrosurgical instrument starts to develop to intelligent direction.Yet, the intellectuality of Electrosurgical instrument mean appliance requires accurately the perception electrosurgical unit act on the variation of voltage, electric current and the bio-impedance at biological tissue position, and feeding back in time control center, the rear energy of accurately adjusting is exported by analysis, reduces the fire damage to normal surrounding tissue.
Summary of the invention
The present invention carries out in order to address the above problem, and purpose is to provide a kind of electrosurgical unit of perception accurately to act on the variation of voltage, electric current and the bio-impedance at biological tissue position, and feeds back in time the electrosurgery pick-up unit of control center.In order to achieve the above object, the present invention has taked following technical scheme.
A kind of electrosurgical output power pick-up unit, be applied to structural output power for detection of Electrosurgical instrument under the high-frequency high-power condition, it is characterized in that having: voltage detecting circuit, for detection of the Electrosurgical instrument output voltage signal, current detection circuit, for detection of the Electrosurgical instrument output current signal, and control module, signal for calculating voltage testing circuit and current detection circuit detection, and the output power of adjustment Electrosurgical instrument, wherein, tension measuring circuit is by voltage input circuit, the first rectification circuit and the first filtering circuit form, current measurement circuit is by current input circuit, the second rectification circuit and the second filtering circuit form, voltage input circuit is converted to the first ac voltage signal by the output voltage of Electrosurgical instrument, the first rectification circuit is connected with voltage input circuit, the first ac voltage signal rectification is become to the first d. c. voltage signal, the first filtering circuit is connected with the first rectification circuit, the first d. c. voltage signal is removed to disturb and become the first measured signal, be transferred to control module, current input circuit is converted to the second ac voltage signal by the output current of Electrosurgical instrument, the second rectification circuit is connected with current input circuit, the second ac voltage signal rectification is become to the second d. c. voltage signal, the second filtering circuit is connected with the second rectification circuit, the second d. c. voltage signal is removed to disturb and become the second measured signal, be transferred to control module, control module is according to the first measured signal and the second measured signal, calculate output voltage and output current, and further calculate the impedance of tissue, adjust the output power of Electrosurgical instrument according to impedance.
The beneficial effect of the invention
The electrosurgical output power pick-up unit the present invention relates to can be realized the accurate detection of electrosurgical unit output voltage and electric current, can feed back in time the electrosurgery control module after sampling, adjust in real time the size of energy output, for realizing that intelligentized electrosurgical unit lays a good foundation, and then reduce the wound caused because of human factor.
The accompanying drawing explanation
Accompanying drawing is circuit theory diagrams of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.
The electrosurgical output power pick-up unit the present invention relates to is comprised of voltage detecting circuit, current detection circuit and electrosurgery control module.
Accompanying drawing is circuit theory diagrams of the present invention.
As shown in the figure, coupling transformer T1, resistance R 6-R8 form voltage input circuit, and output terminal RF1, the RF2 of high number of turn coil, divider resistance R6 and R8 and the Electrosurgical instrument of T1 are in series, and low number of turn coil and resistance R 7 are connected with the first rectification circuit.When destination organization is carried out to surgical procedures, the equivalent resistance of the high output voltage of Electrosurgical instrument on the high number of turn coil of the equivalent T1 of resistance R 7 and R6, R8 dividing potential drop, and the transformer conversion, obtain less voltage signal, the first ac voltage signal is input in the first rectification circuit.The first rectification circuit comprises the rectifier bridge be comprised of diode D1, D2, D4 and D5; Capacitor C 5 for elementary filtering; And the holding circuit formed by resistance R 1 and diode D3.The first ac voltage signal that the rectifier bridge connected with the low number of turn coil of T1 will exchange is converted into DC pulse signal; carry out filtering through C5 and become ripply d. c. voltage signal; by holding circuit, be limited again; making the first rectification circuit is that the first d. c. voltage signal is less than 5V to the voltage signal of the first filtering circuit output, with the protection subsequent element.The quadravalence filtering circuit formed by operational amplifier (U1A and U1B), resistance R 2-R5 and capacitor C 1-C4; i.e. the first filtering circuit; with R1, with the holding circuit that D3 forms, be connected; the first d. c. voltage signal to the first rectification circuit output carries out filtering, by 7 pins of U1B, exports i.e. the first measured signal of desirable direct current signal.Voltage input circuit, the first rectification circuit and the first filtering circuit have formed voltage detecting circuit.
Coupling transformer T2, resistance R 14 form current input circuit, and the low number of turn coil of T2 is connected with RF1, RF2, and high number of turn coil is connected with the second rectification circuit with R14.The electric current that the high number of turn coil of T2 produces is by R14, and the voltage drop of formation is as the input voltage of the second rectification circuit, i.e. the second ac voltage signal.The second rectifier circuit structure is identical with the first rectification circuit; diode D6-D10, resistance R 9 and capacitor C 10, consist of, the rectifier bridge that wherein D6, D7, D9 and D10 form is connected with current input circuit, and C10 carries out elementary filtering; R9 is connected with the second filtering circuit with D8, carries out voltage-limiting protection.The second ac voltage signal, after the rectification identical with the first ac voltage signal, elementary filtering and voltage-limiting protection, is converted into the second d. c. voltage signal and outputs to the second filtering circuit.The second filter circuit construction is identical with the first filtering circuit, operational amplifier U2A and U2B, resistance R 10-R13 and capacitor C 6-C9, consists of, and the second d. c. voltage signal is after the second filtering circuit carries out filtering, by pin 7 output the second measured signals of U2B.Current input circuit, the second rectification circuit and the second filtering circuit have formed current detection circuit.
The first measured signal and the second measured signal are transferred to the electrosurgery control module, calculated output voltage and the output current of Electrosurgical instrument by the electrosurgery control module, and further according to output voltage and output current, calculate the impedance of destination organization, according to the output power of the impedance adjustment Electrosurgical instrument of destination organization.
Above, be only a specific embodiment of the present invention, not be used for limiting practical range of the present invention, i.e. all equivalences of doing according to the content of the present patent application the scope of the claims change and modify, and all should be technology category of the present invention.
Claims (5)
1. an electrosurgical output power pick-up unit, be applied to structural output power for detection of Electrosurgical instrument under the high-frequency high-power condition, it is characterized in that having:
Voltage detecting circuit, for detection of described Electrosurgical instrument output voltage signal;
Current detection circuit, for detection of described Electrosurgical instrument output current signal; And
Control module, for calculating the signal of described voltage detecting circuit and the detection of described current detection circuit, and adjust the output power of described Electrosurgical instrument,
Wherein, described tension measuring circuit is comprised of voltage input circuit, the first rectification circuit and the first filtering circuit,
Described current measurement circuit is comprised of current input circuit, the second rectification circuit and the second filtering circuit,
Described voltage input circuit is converted to the first ac voltage signal by the output voltage of described Electrosurgical instrument,
Described the first rectification circuit is connected with described voltage input circuit, and described the first ac voltage signal is converted into to the first d. c. voltage signal,
Described the first filtering circuit is connected with described the first rectification circuit, and described the first d. c. voltage signal is removed to disturb becomes the first measured signal, is transferred to described control module,
Described current input circuit is converted to the second ac voltage signal by the output current of described Electrosurgical instrument,
Described the second rectification circuit is connected with described current input circuit, and described the second ac voltage signal is converted into to the second d. c. voltage signal,
Described the second filtering circuit is connected with described the second rectification circuit, and described the second d. c. voltage signal is removed to disturb becomes the second measured signal, is transferred to described control module,
Described control module, according to described the first measured signal and described the second measured signal, calculates described output voltage and described output current, and further calculates the impedance of described tissue, adjusts the output power of described Electrosurgical instrument according to impedance.
2. electrosurgical output power pick-up unit according to claim 1 is characterized in that:
Wherein, described voltage input circuit has the first transformer and divider resistance,
High number of turn coil and the described Electrosurgical instrument output terminal of described divider resistance, described the first transformer are in series,
The low number of turn coil of described the first transformer is connected with described the first rectification circuit.
3. electrosurgical output power pick-up unit according to claim 1 is characterized in that:
Wherein, described current input circuit has the second transformer,
Low number of turn coil and the described Electrosurgical instrument output terminal of described the second transformer are in series,
The high number of turn coil of described the second transformer is connected with described the second rectification circuit.
4. electrosurgical output power pick-up unit according to claim 1 is characterized in that:
Wherein, described the first rectification circuit and described the second rectification circuit all have,
Rectifier bridge, be connected with the low number of turn coil of the described first or second transformer, and the described first or second ac voltage signal is carried out to rectification,
Elementary filtering circuit, be connected with described rectifier bridge, and the signal after rectification is carried out to filtering, and preliminary the elimination disturbed,
Pressure limiting circuit, be connected with the described first or second filtering circuit with described elementary filtering circuit, and the voltage of restriction direct current signal, in fixed range, forms the described first or second d. c. voltage signal.
5. electrosurgical output power pick-up unit according to claim 1 is characterized in that:
Wherein, described the first and second filtering circuits are the quadravalence filtering circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101932051A CN103424603A (en) | 2013-05-22 | 2013-05-22 | Electrosurgery output power detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101932051A CN103424603A (en) | 2013-05-22 | 2013-05-22 | Electrosurgery output power detection device |
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| CN103424603A true CN103424603A (en) | 2013-12-04 |
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| CN2013101932051A Pending CN103424603A (en) | 2013-05-22 | 2013-05-22 | Electrosurgery output power detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108379736A (en) * | 2014-12-21 | 2018-08-10 | 徐志强 | The cranial nerve stimulating apparatus of background voltage influence can be eliminated |
| CN111513839A (en) * | 2020-04-30 | 2020-08-11 | 湖南菁益医疗科技有限公司 | Electrosurgical system and control method |
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| CN2061445U (en) * | 1989-11-30 | 1990-09-05 | 王晓亮 | High-frequency intellegent surgical knife |
| US5422567A (en) * | 1993-12-27 | 1995-06-06 | Valleylab Inc. | High frequency power measurement |
| WO2004107994A1 (en) * | 2003-06-06 | 2004-12-16 | Telea Electronic Engineering Srl | Electronic coagulation scalpel |
| CN201759666U (en) * | 2010-04-28 | 2011-03-16 | 上海力申科学仪器有限公司 | Self-adjusting system for output power and mode of high frequency surgical instrument |
| CN202096288U (en) * | 2011-05-03 | 2012-01-04 | 上海理工大学 | High frequency electrotome output current and voltage detection system for operation |
| CN102551881A (en) * | 2012-02-27 | 2012-07-11 | 安徽英特电子有限公司 | Output power monitoring circuit of high frequency electrotome |
| EP2499983A1 (en) * | 2011-03-17 | 2012-09-19 | Tyco Healthcare Group LP | Isolated current sensor |
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2013
- 2013-05-22 CN CN2013101932051A patent/CN103424603A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2061445U (en) * | 1989-11-30 | 1990-09-05 | 王晓亮 | High-frequency intellegent surgical knife |
| US5422567A (en) * | 1993-12-27 | 1995-06-06 | Valleylab Inc. | High frequency power measurement |
| WO2004107994A1 (en) * | 2003-06-06 | 2004-12-16 | Telea Electronic Engineering Srl | Electronic coagulation scalpel |
| CN201759666U (en) * | 2010-04-28 | 2011-03-16 | 上海力申科学仪器有限公司 | Self-adjusting system for output power and mode of high frequency surgical instrument |
| EP2499983A1 (en) * | 2011-03-17 | 2012-09-19 | Tyco Healthcare Group LP | Isolated current sensor |
| CN202096288U (en) * | 2011-05-03 | 2012-01-04 | 上海理工大学 | High frequency electrotome output current and voltage detection system for operation |
| CN102551881A (en) * | 2012-02-27 | 2012-07-11 | 安徽英特电子有限公司 | Output power monitoring circuit of high frequency electrotome |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108379736A (en) * | 2014-12-21 | 2018-08-10 | 徐志强 | The cranial nerve stimulating apparatus of background voltage influence can be eliminated |
| CN108379736B (en) * | 2014-12-21 | 2021-11-19 | 徐志强 | Cranial nerve stimulation device capable of eliminating background voltage influence |
| CN111513839A (en) * | 2020-04-30 | 2020-08-11 | 湖南菁益医疗科技有限公司 | Electrosurgical system and control method |
| CN111513839B (en) * | 2020-04-30 | 2021-07-09 | 湖南菁益医疗科技有限公司 | Electrosurgical system and control method |
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Application publication date: 20131204 |