CN102641152B - High-frequency electrotome generator based on FPGA (Field Programmable Gata Array) - Google Patents
High-frequency electrotome generator based on FPGA (Field Programmable Gata Array) Download PDFInfo
- Publication number
- CN102641152B CN102641152B CN201210158904.8A CN201210158904A CN102641152B CN 102641152 B CN102641152 B CN 102641152B CN 201210158904 A CN201210158904 A CN 201210158904A CN 102641152 B CN102641152 B CN 102641152B
- Authority
- CN
- China
- Prior art keywords
- fpga
- radio frequency
- generation module
- circuit
- impedance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Surgical Instruments (AREA)
Abstract
The invention relates to a high-frequency electrotome generator based on an FPGA (Field Programmable Gata Array). A power supply provides direct-current voltage signals to a radio frequency generation module; the direct-current voltage signals are subjected to resonant amplification of the radio frequency generation module and rectification of a half bridge circuit to be changed to high-voltage alternating-current radio frequency singles to be output, and then the output signals are transmitted to a biological organization by a radiation electrode and a backward channel; an impedance detection unit is used for detecting the impedance of the biological organization and transmitting impedance parameters to an FPGA main control unit; according to the impedance parameters, the FPGA main control unit regulates the duty ratio of SPWM (Sinusoidal Pulse Width Modulation) waves in real time; and then the SPWM waves are output to the radio frequency generation module. A controller disclosed by the invention can realize accurate control and is high in response speed, easy to modify, capable of programming in situ, strong in universality and stable in performance; and more importantly, by virtue of the large-scale FPGA, a microprocessor, a special hardware algorithm unit, a special waveform generation unit and a signal acquisition and processing unit are all integrated on a single chip, so that the high-frequency electrotome generator becomes a special integral electronic control system.
Description
Technical field
The present invention relates to a kind of surgical operating instrument, particularly a kind of high frequency electric knife generator based on FPGA.
Background technology
High frequency electric knife is widely used, not only in direct-view operation, as general surgery, breast are outer, brain is outer, department of eye, decorative sursery be widely used, and be applied in more and more in various endoscopic surgerys, as: peritoneoscope, prostate are cut in the operations such as mirror, gastroscope, cystoscope, hysteroscope.High frequency electric knife generator is its core component.At present, traditional high frequency electric knife extensively adopts single-chip microcomputer to control complete machine, implements the automatic adjusting to power waveform, voltage, electric current under various functions, and the detection of various safety indexs.But with respect to digital control some shortcomings that also exist: control circuit assembly is many, model is complicated; Analog device is easily aging; Control method is single, the control algolithm that more difficult realization is advanced.Along with the development of EDA technology, the Circuits System of using the digital electronic system based on FPGA to form power device is controlled, for Electrosurgical digital control a kind of new effective ways that provide are provided.
Summary of the invention
The present invention be directed to present high frequency electric knife control circuit assembly many, model is complicated, analog device is easily aging, the problem that control method is single, propose a kind of high frequency electric knife generator based on FPGA, utilized FPGA programmability, adopted SPWM modulator approach, by resonant mode half-bridge inversion circuit mode, control frequency, the amplitude and power of radio frequency output signal, make it to be applicable to the required cutting of biological tissue's body and/or condense.
Technical scheme of the present invention is: a kind of high frequency electric knife generator based on FPGA, power supply provides d. c. voltage signal to radio frequency generation module, d. c. voltage signal amplifies and half-bridge circuit shaping through radio frequency generation module resonance, after becoming high-voltage alternating radiofrequency signal, export, output sends to biological tissue by radiation electrode and backward channel; The impedance of impedance detection unit inspection biological tissue also sends to FPGA main control unit impedance parameter, and FPGA main control unit is adjusted the dutycycle of SPWM ripple in real time according to impedance parameter, and SPWM ripple outputs to radio frequency generation module.
Described radio frequency generation module is comprised of resonance circuit and half-bridge switch formula power amplifier two parts, and resonance circuit forms RC oscillating circuit by the electric capacity of connecting and inductance, and its resonant frequency is 1/
half-bridge switch formula power amplifier is comprised of two MOS switching tubes of connecting and the Capacitance parallel connection of two series connection, two MOS switching tube central points of the electric capacity of resonance circuit series connection and the series connection of inductance two ends one termination half-bridge switch formula discharge circuit, two electric capacity central points of the series connection of another termination half-bridge switch formula discharge circuit, the electric capacity two ends of resonance circuit are outfan.
Described FPGA main control unit comprises that current and voltage of power supply feedback and control, impedance detection feedback and control, SPWM modulate, and its peripheral circuit also comprises crystal oscillator, man machine interface and buffer circuit; Current and voltage of power supply feedback connects power supply with control, processes power supply signal, and impedance detection feedback and control inputs connect the output of impedance detection unit, and output connects SPWM modulation; SPWM modulation output connects two MOS switching tubes of radio frequency generation module; Crystal oscillator drives signal for FPGA device provides clock; The input and output isolation of buffer circuit to main control unit, man machine interface can setup parameter to FPGA main control unit.
Described SPWM modulation mainly comprises that sine-wave generator, triangular-wave generator, modulation degree M control, comparator.
Beneficial effect of the present invention is: the present invention is based on the high frequency electric knife generator of FPGA, controller can realize accurate control, fast response time, easily revises, can field programming; Controller highly versatile, stable performance; The most important thing is, large-scale FPGA let us can all be integrated in microprocessor, specialized hardware algorithm unit, special-purpose waveform generating unit, signal acquisition process unit on single-chip, makes it to become a complete electronics dedicated control system.
Accompanying drawing explanation
Fig. 1 is the high frequency electric knife generator schematic diagram that the present invention is based on FPGA;
Fig. 2 the present invention is based on radio frequency generation functions of modules circuit diagram in the high frequency electric knife generator of FPGA;
Fig. 3 the present invention is based on FPGA main control unit functional schematic in the high frequency electric knife generator of FPGA;
Fig. 4 the present invention is based on SPWM modulation algorithm schematic diagram in the high frequency electric knife generator of FPGA.
The specific embodiment
High frequency electric knife generator schematic diagram based on FPGA as shown in Figure 1, first 200V d. c. voltage signal is produced by power supply 101, offers radio frequency generation module 102; By radio frequency generation module 102 resonance, amplify and half-bridge circuit shaping, become high-voltage alternating radiofrequency signal; Finally by radiation electrode and backward channel, send to biological tissue 103.Impedance detection unit 104 is for detection of the impedance of biological tissue 103 and impedance parameter is sent to FPGA main control unit 105, FPGA main control unit 105 is adjusted the dutycycle of SPWM ripple in real time according to impedance parameter, to control the amplitude of radio frequency generation module 102 output signals, make it to be applicable to biological required cutting and/or condense.
Radio frequency generation functions of modules circuit diagram as shown in Figure 2, described radio frequency generation module 102, is comprised of resonance circuit and half-bridge switch formula power amplifier two parts.Resonance circuit forms RC oscillating circuit by the electric capacity 203 of connecting with inductance 202, and its resonant frequency is 1/
.Half-bridge switch formula power amplifier is composed in parallel by electric capacity 205, the electric capacity 206 of the MOS switch 201,204 of connecting and series connection.MOS switch 201,204 central points of the electric capacity of resonance circuit series connection and the series connection of inductance two ends one termination half-bridge switch formula discharge circuit, the electric capacity 205 of the series connection of another termination half-bridge switch formula discharge circuit, electric capacity 206 central points, resistance 207 is load.
FPGA main control unit functional schematic as shown in Figure 3, FPGA main control unit 105 comprises that current and voltage of power supply feeds back and control 302, impedance detection feedback and control 305, SPWM modulation 304, and its peripheral structure also comprises crystal oscillator 303, man machine interface 301 and buffer circuit 306; Current and voltage of power supply feedback and control 302 feedbacks for control appliance power supply 101 and output, impedance detection is fed back and is controlled 305 adjustment of the Output rusults according to impedance detection 104 SPWM and modulate 304 dutycycles of exporting; SPWM modulation 304 outputs connect the MOS switch 201 and 204 of radio frequency generation module 102; Crystal oscillator 303 drives signal for FPGA device provides clock; The input and output isolation of 306 pairs of main control units of buffer circuit, avoids homology to disturb, man machine interface 301 can setup parameter to FPGA main control unit 105.
SPWM modulates 304 algorithm schematic diagrams as shown in Figure 4, mainly comprises sine-wave generator 401, triangular-wave generator 404, modulation degree M control 402, comparator 103; Offset of sinusoidal wave producer 401 compares with synchronization sine wave and triangular wave amplitude size that triangular-wave generator 404 produces, and sine wave is greater than triangular wave and exports positive pulse, otherwise exports negative pulse or low level.
Claims (4)
1. the high frequency electric knife generator based on FPGA, it is characterized in that, power supply provides d. c. voltage signal to radio frequency generation module, d. c. voltage signal amplifies and half-bridge circuit shaping through radio frequency generation module resonance, after becoming high-voltage alternating radiofrequency signal, export, output sends to biological tissue by radiation electrode and backward channel; The impedance of impedance detection unit inspection biological tissue also sends to FPGA main control unit impedance parameter, and FPGA main control unit is adjusted the dutycycle of SPWM ripple in real time according to impedance parameter, and SPWM ripple outputs to radio frequency generation module.
2. the high frequency electric knife generator based on FPGA according to claim 1, it is characterized in that, described radio frequency generation module is comprised of resonance circuit and half-bridge switch formula power amplifier two parts, and resonance circuit forms RC oscillating circuit by the electric capacity of connecting and inductance, and its resonant frequency is 1/
half-bridge switch formula power amplifier is comprised of two MOS switching tubes of connecting and the Capacitance parallel connection of two series connection, two MOS switching tube central points of the electric capacity of resonance circuit series connection and the series connection of inductance two ends one termination half-bridge switch formula discharge circuit, two electric capacity central points of the series connection of another termination half-bridge switch formula discharge circuit, the electric capacity two ends of resonance circuit are outfan.
3. the high frequency electric knife generator based on FPGA according to claim 1, it is characterized in that, described FPGA main control unit comprises that current and voltage of power supply feedback and control, impedance detection feedback and control, SPWM modulate, and its peripheral circuit also comprises crystal oscillator, man machine interface and buffer circuit; Current and voltage of power supply feedback connects power supply with control, processes power supply signal, and impedance detection feedback and control inputs connect the output of impedance detection unit, and output connects SPWM modulation; SPWM modulation output connects two MOS switching tubes of radio frequency generation module; Crystal oscillator drives signal for FPGA device provides clock; The input and output isolation of buffer circuit to main control unit, man machine interface can setup parameter to FPGA main control unit.
4. the high frequency electric knife generator based on FPGA according to claim 3, is characterized in that, described SPWM modulation mainly comprises that sine-wave generator, triangular-wave generator, modulation degree M control, comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210158904.8A CN102641152B (en) | 2012-05-22 | 2012-05-22 | High-frequency electrotome generator based on FPGA (Field Programmable Gata Array) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210158904.8A CN102641152B (en) | 2012-05-22 | 2012-05-22 | High-frequency electrotome generator based on FPGA (Field Programmable Gata Array) |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102641152A CN102641152A (en) | 2012-08-22 |
| CN102641152B true CN102641152B (en) | 2014-03-05 |
Family
ID=46654410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210158904.8A Expired - Fee Related CN102641152B (en) | 2012-05-22 | 2012-05-22 | High-frequency electrotome generator based on FPGA (Field Programmable Gata Array) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102641152B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD810290S1 (en) | 2016-01-29 | 2018-02-13 | Medovex Corp. | Surgical portal driver |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA3146627A1 (en) | 2013-04-24 | 2014-10-30 | Medovex Corp. | Minimally invasive methods for spinal facet therapy to alleviate pain and associated surgical tools, kits and instructional media |
| CN104105328A (en) * | 2014-07-17 | 2014-10-15 | 北京无限世佳环境技术有限公司 | Large-air-volume low-voltage efficient plasma device and air-handling system thereof |
| US10398494B2 (en) | 2014-07-30 | 2019-09-03 | Medovex Corp. | Surgical tools for spinal facet therapy to alleviate pain and related methods |
| JP6689761B2 (en) | 2014-07-30 | 2020-04-28 | メドヴェックス コーポレーションＭｅｄｏｖｅｘ Ｃｏｒｐ． | Surgical instruments for the treatment of spinal facet joints for pain relief and related methods |
| US10405915B2 (en) | 2014-10-31 | 2019-09-10 | Medtronic Advanced Energy Llc | RF output stage switching mechanism |
| US10595919B2 (en) | 2014-12-12 | 2020-03-24 | Medovex Corp. | Surgical tools with positional components |
| CN108245239A (en) * | 2016-12-28 | 2018-07-06 | 南京森盛医疗设备有限公司 | A kind of high frequency vessel sealing cutter device for charging cutting function |
| CN109452967B (en) * | 2018-09-10 | 2020-12-15 | 上海圣哲医疗科技有限公司 | Thermal cutting device and method based on feedback |
| CN110897682B (en) * | 2019-07-01 | 2022-05-13 | 广州易和医疗技术开发有限公司 | Multi-output minimally invasive surgery system based on ADRC frequency control |
| CN111643183B (en) * | 2020-05-27 | 2023-06-23 | 大连理工大学 | Output mode switching self-matching high-frequency electrotome power supply circuit |
| CN112869867A (en) * | 2021-01-21 | 2021-06-01 | 重庆金山医疗器械有限公司 | High-frequency electrotome control system, method and device and FPGA |
| CN113262038B (en) * | 2021-06-19 | 2024-04-16 | 安徽奥弗医疗设备科技股份有限公司 | Plasma scalpel power control system |
| CN116780873B (en) * | 2023-08-21 | 2024-01-02 | 厚凯(北京)医疗科技有限公司 | Main unit of medical energy instrument, method executed by main unit and medical energy instrument |
| CN118021430A (en) * | 2024-04-12 | 2024-05-14 | 南昌大学 | High-frequency electric knife and driving device thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1957857A (en) * | 2006-10-17 | 2007-05-09 | 北京市亚可康达技术研究所 | Equipment for controlling waveform of electrical output in high frequency based on direct digital frequency synthesis technique |
| WO2011044338A2 (en) * | 2009-10-09 | 2011-04-14 | Ethicon Endo-Surgery, Inc. | Surgical generator for ultrasonic and electrosurgical devices |
| CN202637105U (en) * | 2012-05-22 | 2013-01-02 | 上海理工大学 | High-frequency electric scalpel generator based on field programmable gate array (FPGA) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2061455U (en) * | 1989-11-06 | 1990-09-05 | 江西赣洪保健营养研究所 | Multifunctional health restored device |
| ITVI20030110A1 (en) * | 2003-06-06 | 2004-12-07 | Telea Electronic Eng Srl | ELECTRONIC SCALPEL. |
| US20060229515A1 (en) * | 2004-11-17 | 2006-10-12 | The Regents Of The University Of California | Fiber optic evaluation of tissue modification |
| US8728072B2 (en) * | 2005-05-12 | 2014-05-20 | Aesculap Ag | Electrocautery method and apparatus |
| CN2912549Y (en) * | 2006-05-24 | 2007-06-20 | 刘佳键 | Electrotomy device |
| CN100469333C (en) * | 2007-06-19 | 2009-03-18 | 刘金成 | High-frequency electric knife |
| CN101714821B (en) * | 2009-12-18 | 2011-09-28 | 哈尔滨工业大学 | Excitation power circuit of rotary transformer |
-
2012
- 2012-05-22 CN CN201210158904.8A patent/CN102641152B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1957857A (en) * | 2006-10-17 | 2007-05-09 | 北京市亚可康达技术研究所 | Equipment for controlling waveform of electrical output in high frequency based on direct digital frequency synthesis technique |
| WO2011044338A2 (en) * | 2009-10-09 | 2011-04-14 | Ethicon Endo-Surgery, Inc. | Surgical generator for ultrasonic and electrosurgical devices |
| CN202637105U (en) * | 2012-05-22 | 2013-01-02 | 上海理工大学 | High-frequency electric scalpel generator based on field programmable gate array (FPGA) |
Non-Patent Citations (6)
| Title |
|---|
| 一种高频手术器功率发生器设计;项莹莹;《仪表技术》;20120331(第3期);第17-20页，附图1－7 * |
| 基于MCU的高频电刀研制;张键勇等;《现代电子技术》;20111015;第34卷(第20期);第36-42页 * |
| 张键勇等.基于MCU的高频电刀研制.《现代电子技术》.2011,第34卷(第20期),36-42. |
| 曹智文.高频电刀的设计与实现.《微计算机信息》.2010,第26卷(第4－2期),50-52. |
| 项莹莹.一种高频手术器功率发生器设计.《仪表技术》.2012,(第3期),17-20. |
| 高频电刀的设计与实现;曹智文;《微计算机信息》;20101231;第26卷(第4－2期);第50-52页 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD810290S1 (en) | 2016-01-29 | 2018-02-13 | Medovex Corp. | Surgical portal driver |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102641152A (en) | 2012-08-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102641152B (en) | High-frequency electrotome generator based on FPGA (Field Programmable Gata Array) | |
| CN202637105U (en) | High-frequency electric scalpel generator based on field programmable gate array (FPGA) | |
| EP3216409B1 (en) | System and method for harmonic control of dual-output generators | |
| US10105173B2 (en) | Radio frequency generator and a method of generating radio frequency energy utilizing the radio frequency generator | |
| US10869712B2 (en) | System and method for high frequency leakage reduction through selective harmonic elimination in electrosurgical generators | |
| CN106873043B (en) | A kind of shallow earth's surface magnetic source transmitter and its control method of double-loop feedbackc | |
| CN205199870U (en) | A supersonic generator for ultrasonic cleaning device | |
| CN202823836U (en) | Driving device for energy converter and debridement machine | |
| CN103731166B (en) | A kind of ultrasonic wave of frequency-adjustable launches drive unit | |
| CN111342562B (en) | SPWM wave generation method injected with LCC-S topological structure | |
| CN107158563B (en) | Intermediate frequency therapeutic apparatus | |
| CN1957857B (en) | Equipment for controlling waveform of electrical output in high frequency based on direct digital frequency synthesis technique | |
| CN109771025B (en) | Impedance detection module for medical equipment cloud system | |
| CN203724255U (en) | Ultrasonic tooth tartar removal system | |
| CN209060388U (en) | Ultrasonic therapy device | |
| CN205698473U (en) | Low-frequency pulse acupuncture points on the human body physiotherapy table | |
| CN205514893U (en) | Electrode controlling means and electromagnetism sword surgical system | |
| CN220876898U (en) | Precise electrotome equipment | |
| CN207301170U (en) | A kind of electric knife power detection device | |
| CN105832410A (en) | Electrode control device, electrode control method and electromagnetic knife surgery system | |
| CN207785666U (en) | Pulsed ultrashort wave generating system and the ultrashort wave generating device of pulsed | |
| CN203942497U (en) | A kind of coagulation power amplification device for medical high frequency electric knife | |
| CN108837311A (en) | A kind of MM wave therapeutic instrument with low frequency modulations function | |
| CN202537652U (en) | Radiofrequency ablation therapeutic equipment for blocking renal artery sympathetic plexus | |
| CN106980339A (en) | A kind of invariable power regulation circuit and ultrasonic wave water toothpick invariable power adjusting method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Song Chengli Inventor after: Zhou Yu Inventor after: Yan Shengjie Inventor after: Chen Chengda Inventor after: Xu Wendong Inventor before: Zhang Guilan Inventor before: Zhou Yu Inventor before: Song Chengli Inventor before: Yan Shengjie Inventor before: Chen Chengda Inventor before: Xu Wendong |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHANG GUILAN ZHOU YU SONG CHENGLI YAN SHENGJIE CHEN SHENGDA XU WENDONG TO: SONG CHENGLI ZHOU YU YAN SHENGJIE CHEN SHENGDA XU WENDONG |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20170522 |