CN100457059C - Multi-path radio-frequency smelting therapic equipment - Google Patents
Multi-path radio-frequency smelting therapic equipment Download PDFInfo
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- CN100457059C CN100457059C CNB2005100212415A CN200510021241A CN100457059C CN 100457059 C CN100457059 C CN 100457059C CN B2005100212415 A CNB2005100212415 A CN B2005100212415A CN 200510021241 A CN200510021241 A CN 200510021241A CN 100457059 C CN100457059 C CN 100457059C
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Abstract
A multi-channel RF therapeutic apparatus for continuously eliminating multiple targets in a ring region of venae pulmonales is composed of an amplifier for generating power signals, a microcontroller consisting of central controller and parameter measuring controller, a parameter detector, a display and operation controller, a power switching switch for optical relay, and multiple eliminating electrodes with isolator.
Description
Affiliated technical field
The invention belongs to the electronic therapeutic instrument in biomedical engineering technology field, specifically is multi-path radio-frequency smelting therapic equipment.
Background technology
Along with the development of biomedical engineering, the heart radiofrequency ablation therapy has obtained application more and more widely in clinical.The stability and the precision of rf ablation therapeutic instrument also improve constantly, and Chinese patent CN254397Y " temperature control rf ablation therapeutic instrument " provides a kind of voltage, electric current and power precision, rf ablation therapeutic instrument that integrated level is higher of improving.But clinical middle discovery the in the treatment atrial fibrillation need be melted a pulmonary venous annular section in recent years.If with existing single-channel RF ablation cure instrument, not only operating time is long, is difficult to also guarantee that annular section melts fully continuously.The multi-path radio-frequency smelting therapic equipment of therefore, need a kind ofly can melt continuously, load detection is more accurate, security performance is higher.
Summary of the invention
Purpose of the present invention provides a kind of multi-path radio-frequency smelting therapic equipment, and this therapeutic instrument can be determined the usage quantity of electrode according to the needs of operation process, melts continuously, shortens the time of operation.Power signal, control parameter to each electrode contact the patient after adopting and isolating, and improve the safety in utilization of instrument.Also can be according to the requirement of treatment, the more accurate omnidistance in real time impedance value that detects is accurately determined the power and the temperature of each electrode, thereby is improved the therapeutic effect of operation, reduces the risk of operation.
The objective of the invention is to reach like this: a kind of multi-path radio-frequency smelting therapic equipment is produced several parts such as amplifier, microcontroller, parametric detector and display operation controller and forms by rf power signal.Produce between amplifier and the external ablating electrode at power signal the power change-over switch is set, a plurality of ablating electrode connecting interfaces are set on the power change-over switch outfan.Described microcontroller is meant central controller microcontroller 1 and parameter detecting controller microcontroller 2, and the input of power change-over switch also links to each other with microcontroller 2.Produce between amplifier and the power switch at power signal, between microcontroller 1 and microcontroller 2, be respectively equipped with isolator.
Described power change-over switch is an optical relay.The described isolator that produces between amplifier and the power change-over switch at power signal is a transformator.Isolator between microcontroller 1 and microcontroller 2 is a fibre optic isolater.Described parameter detecting is meant under the control of microcontroller 2 detection to voltage, electric current, temperature and impedance.The detection of described impedance is meant gathers impedance signal respectively to each electrode, by filtering, amplification back output detection signal.
Described impedance detection is meant the collection of the signal of telecommunication of the different time sections of the fixed frequency of each electrode and detection.Described impedance detection is meant collection and the detection to the random time section signal of telecommunication of the different frequency of each electrode.
Just described impedance detection can be finished by dual mode, and a kind of is the time method of salary distribution, and a kind of is frequency distributing mode.Time method of salary distribution impedance detection be exactly the impedance detection signal of each electrode be to adopt same frequency, work in the different time periods, each electrode only detects the signal of corresponding time period, thereby finishes impedance detection.And the frequency distributing mode impedance detection be exactly the impedance detection signal of each electrode is to adopt different frequencies, and each electrode only detects the signal of corresponding frequencies, thereby finishes impedance detection.Adopting the purpose that frequency is distributed and the time distributes is to reduce the interference of signal between each electrode and the interference of radio frequency, and accurately acquired signal accurately detects impedance.Impedance detection can both be carried out, thereby realize omnidistance detection impedance when radio frequency output and radio frequency are not exported.
The present invention has the following advantages:
1, multi-electrode melts and has the unique advantage that the many target spots to ring-type or lamellar zone melt continuously, and the success rate of operation greatly improves, and has also shortened the time of operation.
2, owing to adopted the effective isolation device, the patient is arrived in the power signal amplification again after outputing to electrode after the transformer isolation, and control and parameter signal arrive the patient by light-to-current inversion again behind electrode after optical fiber is isolated, and security performance improves greatly.
3, the more accurately omnidistance impedance that detects each electrode in real time, the precision of therapeutic instrument improves greatly, and the risk of operation reduces greatly.
4, multi-electrode melts and not only has the unique advantage that the many target spots to the required pulmonary vein annular section of cardiac treatment melt simultaneously, and the intervention ablation to positions such as liver, nerve, the intestines and stomach, face all has good effect simultaneously.
Description of drawings
Fig. 1 is the block diagram of this multi-channel rf ablatograph.
Fig. 2 illustrates and adopts light MOS relay rate of doing work change-over switch.
Fig. 3 is the impedance signal collection to each electrode, the block diagram of detection.
Fig. 4 is the circuit diagram of impedance signal collection, detection.
Fig. 5 is a time method of salary distribution impedance detection situation, a kind of time relationship sketch map between the impedance detection signal of each electrode and power signal.
Fig. 6 is the sketch map that adopts photoisolator.
The specific embodiment
Referring to accompanying drawing.
Embodiment 1
This multi-path radio-frequency smelting therapic equipment produces amplifier by rf power signal, microcontroller, and parameter detecting shows, operates control, the power switch, several parts of isolator are formed.The multichannel ablating electrode is connected on the interface of outfan of power switch.Microcontroller is meant central controller microcontroller 1 and parameter detecting controller microcontroller 2, and the input of power switch also links to each other with microcontroller 2.Adopt transformator to do isolator between power signal generation amplification and power switch, the isolation between microcontroller 1 and microcontroller 2 adopts optical fiber as isolator, contacts the patient again through each electrode after the isolation, and its security performance further improves.
The power division of multi-electrode is by being to be finished by the power change-over switch.Have n electrode pair that n power change-over switch should be arranged, the power change-over switch that each electrode pair is answered can be assigned to power on each electrode fast.Power signal produces the power signal of amplifier output by behind the isolator, is subjected to the control of the control signal of microcontroller 2 generations, according to control signal, by light MOS relay power signal is switched on each electrode.Because the signal that needs to switch is the high-power RF signal, at 100K-1MHz, more than the 100W, and the switch speed requirement is very fast, needs t＜10ms, and the power change-over switch has adopted AQZ264 light MOS relay in this example.
Another outstanding advantage of the present invention is whole process to be carried out in the impedance of each electrode accurately detect in real time.Different with other radio-frequency (RF) ablation instrument is, and this radio-frequency (RF) ablation instrument is that the impedance signal of each electrode itself has been carried out special collection, by the detection of microcontroller 2 control groups.Signal generator in the microcontroller 2 control parametric detectors produces several detection signals and is input to each electrode, carries out the impedance signal collection again.As the input of impedance signal, detect and demonstration after the real-time voltage of each electrode, the current signal collection, no matter whether radio frequency is exported, the collection of impedance signal and detection can both be carried out, thereby have realized omnidistance real-time detection.With respect to existing ablatograph, this ablation cure instrument accuracy of detection greatly improves.In the present embodiment, impedance signal is that the signal of telecommunication of the different time sections of each electrode is gathered and detected, and promptly is according to the mode that the time distributes impedance signal to be gathered and detected.Each electrode all uses same fixed frequency, and is selected as required in 10-100KHz.Know from Fig. 3, after each electrode obtains voltage, current signal, amplify back output through filtering and be converted to required impedance signal.What Fig. 4 provided is the circuit diagram of impedance detection.The signal of gathering is through sending into the impedance signal after the amplifying circuit output of being made up of R3, C4, R4 and U1 is amplified again after R1, C2, R2, C3 and the L1 filtering, amplifier U1 adopts LF357.
Embodiment 2
The detection of impedance is still by microcontroller 2 controls, and the collection of impedance signal is to carry out according to the mode that frequency is distributed as different from Example 1.Each electrode distributes a fixed frequency, and is selected as required in 10-100KHz, has nothing in common with each other.Each electrode is gathered selected signal in specific frequency range, only detects the signal of corresponding frequencies.Still finish the output of impedance signal after the collection by the circuit that Fig. 4 gave.
Adopting frequency distribution or time to distribute the purpose that detects impedance is to reduce the interference of signal between each electrode, and accurately acquired signal accurately detects impedance.
Claims (1)
1 one kinds of multi-path radio-frequency smelting therapic equipments produce amplifier by rf power signal, microcontroller, and parametric detector and demonstration, operation control etc. are partly formed, and it is characterized in that: the impedance detection in the described parametric detector adopts one of following dual mode:
1), to the collection and the detection of the signal of telecommunication of the different time sections of the fixed frequency of each electrode;
2), to the collection and the detection of the signal of telecommunication of the random time section of the different frequency of each electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100212415A CN100457059C (en) | 2005-07-12 | 2005-07-12 | Multi-path radio-frequency smelting therapic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100212415A CN100457059C (en) | 2005-07-12 | 2005-07-12 | Multi-path radio-frequency smelting therapic equipment |
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| Publication Number | Publication Date |
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| CN1895183A CN1895183A (en) | 2007-01-17 |
| CN100457059C true CN100457059C (en) | 2009-02-04 |
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| CNB2005100212415A Expired - Fee Related CN100457059C (en) | 2005-07-12 | 2005-07-12 | Multi-path radio-frequency smelting therapic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109512504A (en) * | 2017-09-20 | 2019-03-26 | 四川锦江电子科技有限公司 | A kind of single bipolar radio frequency ablation system for providing stimulation |
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| DE102008018262B9 (en) * | 2008-04-10 | 2013-07-18 | Erbe Elektromedizin Gmbh | Surgical device with nerve test device |
| CN102198012A (en) * | 2010-03-25 | 2011-09-28 | 北京迈迪顶峰医疗科技有限公司 | Ablation and mapping system, control device and multi-electrode ablation and mapping device |
| US10201385B2 (en) | 2011-09-01 | 2019-02-12 | Biosense Webster (Israel) Ltd. | Catheter adapted for direct tissue contact |
| WO2015042903A1 (en) * | 2013-09-29 | 2015-04-02 | Covidien Lp | Medical treatment devices having adjustable length and/or diameter |
| CN104434302B (en) * | 2014-12-19 | 2017-07-25 | 深圳半岛医疗有限公司 | A kind of radio frequency output device |
| CN104473691B (en) * | 2014-12-30 | 2017-04-26 | 北京天助畅运医疗技术股份有限公司 | Power control system and power control method for radio frequency treatment equipment |
| CN105769332B (en) * | 2016-02-22 | 2019-07-16 | 绵阳立德电子股份有限公司 | RF energy dispensing controller, RFA system and the method for realizing RF energy distribution control using the controller |
| CN108421160B (en) * | 2018-05-09 | 2023-10-20 | 杭州市质量技术监督检测院 | Multi-parameter signal detection circuit and method special for electric needle therapeutic instrument |
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| EP1080694A1 (en) * | 1999-06-11 | 2001-03-07 | Gyrus Medical Limited | An electrosurgical generator. |
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| CN1586420A (en) * | 2004-07-22 | 2005-03-02 | 上海交通大学 | Power generating and monitoring circuit of radio frequency melting therapeutic system |
| CN2808074Y (en) * | 2005-04-25 | 2006-08-23 | 付洁宇 | Multi-path radio frequency ablation therapeutic equipment |
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2005
- 2005-07-12 CN CNB2005100212415A patent/CN100457059C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2163627Y (en) * | 1993-04-22 | 1994-05-04 | 郑然� | Portable radio-frequency thermotherapeutic instrument |
| CN1274566A (en) * | 1999-05-21 | 2000-11-29 | 盖拉斯医疗有限公司 | Electric surgical system and instrument |
| EP1080694A1 (en) * | 1999-06-11 | 2001-03-07 | Gyrus Medical Limited | An electrosurgical generator. |
| WO2001087172A1 (en) * | 2000-05-12 | 2001-11-22 | Cardima, Inc. | Multi-channel rf energy delivery with coagulum reduction |
| CN1586420A (en) * | 2004-07-22 | 2005-03-02 | 上海交通大学 | Power generating and monitoring circuit of radio frequency melting therapeutic system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109512504A (en) * | 2017-09-20 | 2019-03-26 | 四川锦江电子科技有限公司 | A kind of single bipolar radio frequency ablation system for providing stimulation |
| CN109512504B (en) * | 2017-09-20 | 2020-11-06 | 四川锦江电子科技有限公司 | Single-pole and double-pole radio frequency ablation system capable of emitting stimulation |
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| CN1895183A (en) | 2007-01-17 |
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