CN204744407U - Many output electrode's radio frequency melts equipment - Google Patents
Many output electrode's radio frequency melts equipment Download PDFInfo
- Publication number
- CN204744407U CN204744407U CN201520406725.0U CN201520406725U CN204744407U CN 204744407 U CN204744407 U CN 204744407U CN 201520406725 U CN201520406725 U CN 201520406725U CN 204744407 U CN204744407 U CN 204744407U
- Authority
- CN
- China
- Prior art keywords
- electrode
- radio
- switch element
- frequency
- temperature
- 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.)
- Withdrawn - After Issue
Links
Abstract
The utility model discloses a radio frequency of many electricity levels output melts equipment, including switch element, radio frequency generation unit, switch element connection control unit, the switch element is connected with the electrode that melts that the multi -electrode melts on the pipe, simultaneously every the switch element all with radio frequency generation unit connects, wherein, the control unit is used for controlling every thereby the switch element switches on the messenger radio frequency generation unit produces the radio frequency current output arrive the multi -electrode melts the pipe. The utility model discloses a RF power regulation control and multipolar output distribution control reach and only melt the beneficial effect that a plurality of output electrode radio frequency currents were just realized to equipment with a radio frequency.
Description
Technical field
This utility model relates to a kind of radio-frequency (RF) ablation equipment, particularly the radio-frequency (RF) ablation equipment that exports of a kind of multi-electrode.
Background technology
Traditional single electrode radio-frequency (RF) ablation equipment is normally connected with patient with neutral electrode by an ablating electrode, and wherein ablating electrode enters in patient body, arrives position to be ablated; Neutral electrode contacts with patient skin surface.Radio-frequency current flows through ablating electrode, patient tissue and neutral electrode and forms loop.Ablating electrode area is less, and electric field intensity is comparatively large, producing obvious heat effect, making tissue dewatering, solidifying and necrosis melting surrounding them tissue.Neutral electrode area is comparatively large, does not produce obvious heat effect to patient skin.This radio-frequency (RF) ablation mode can in ablating electrode place organization formation ablation points.
Traditional radio-frequency (RF) ablation equipment and ablation catheter can only repeatedly melt, pointwise is melted, and operating time is increased, and operation easier is large, are difficult to ensure ablation effect.
Along with the development of radio-frequency ablation technique, need formation ablation line or one to close in some applications and melt circle, in this case, there is the ablation catheter with multiple ablating electrode, this proposes new requirement with regard to radio frequency ablation apparatus, need radio-frequency (RF) ablation equipment can export radio-frequency current to multiple electrode, and although current how electric ablation apparatus can carry out multiple spot melts, but well can not control the duty of each ablating electrode, temperature around ablating electrode is too high, there is certain security risk, simultaneously, if all ablating electrodes export radio-frequency current simultaneously, the ablating electrode gross area (all ablating electrode area sums) is larger, tissue impedance between ablating electrode and neutral electrode less (often lower than 30 Ω), the work efficiency of radio-frequency power circuit can be reduced like this.
Utility model content
The purpose of this utility model overcomes above-mentioned shortcoming, provides the radio-frequency (RF) ablation equipment that a kind of multi-electrode that can control ablating electrode break-make exports.
In order to realize above-mentioned utility model object.The technical solution adopted in the utility model is as follows, the radio-frequency (RF) ablation equipment that a kind of how electric level exports, and comprising:
Multi-electrode ablation catheter, it comprises N number of ablating electrode, a M temperature sensor, the one or more ablating electrodes in the corresponding described multi-electrode ablation catheter of each temperature sensor; N be greater than 2 integer, M be greater than 1 integer;
RF generating unit, is connected with described multi-electrode ablation catheter, outputs to described multi-electrode ablation catheter for generation of radio-frequency current;
Also comprise switch element,
Described switch element connection control unit; Described switch element number be N number of and with described ablating electrode one_to_one corresponding, each described switch element is all connected with each ablating electrode, and simultaneously each described switch element is all connected with described RF generating unit;
Wherein, described control unit is for controlling each described switching means conductive thus the described radio-frequency current making described RF generating unit produce outputs to described multi-electrode ablation catheter.
Further, each described temperature sensor is for detecting the temperature of described one or more described ablating electrodes when melting within the scope of ablation site of its correspondence;
This equipment also comprises:
Detecting unit, described detecting unit is connected between described multi-electrode ablation catheter and described control unit, for receiving the described temperature value that each described temperature sensor exports, described temperature value is outputted to described control unit;
The temperature value that described control unit exports for each described temperature sensor receiving the output of described detecting unit, if temperature value is higher than predetermined value described in one of them, then disconnects the switch element corresponding to ablating electrode corresponding for this temperature sensor; When this temperature value is lower than described predetermined value, then the switch element corresponding to ablating electrode corresponding for this temperature sensor is closed.
Further, when the described temperature value that each described temperature sensor detects output all exceedes described predetermined value, described control unit sorts from high to low to all described temperature values, by described on-off circuit conducting corresponding for minimum for output temperature value 1 described temperature sensor.。
Further, described control unit is also connected with described RF generating unit, described temperature value specifically for exporting each described temperature sensor received calculates, obtain equalization temperature index, again radio-frequency power regulating index is calculated to described equalization temperature index, regulate by the watt level of described radio-frequency power regulating index to described RF generating unit thus regulate the size of described radio-frequency current.
Further, described N number of switch element successively every K is divided into one group, obtains at least two group switch element groups, and described control unit also to circulate break-make successively at least two group switch element groups described in controlling, and wherein N is the integral multiple of K;
If in above-mentioned circulation make and break process, too high due to described ablating electrode temperature and cause this ablating electrode corresponding switch element disconnect, then the switch element that this ablating electrode is corresponding does not carry out circulation break-make.
The object of the break-make that circulates successively is the number of electrodes controlling simultaneously to melt, and makes radio-frequency power circuit working under the loading condition that efficiency is higher.
Further, the value of described K is predetermined value of dispatching from the factory.
Further, when described control unit controls described N number of switch element circulation break-make successively, the time of each described switching means conductive is 0.5ms-100ms.
Further, during described multi-electrode ablation catheter work, the impedance exported between all ablating electrodes of radio-frequency (RF) energy and neutral electrode of a certain moment remains predetermined resistance value.
Preferably, for different application, described predetermined resistance value is different.Such as: the equipment being applied to cardiac ablation, preferred resistance value about 100 Ω; Be applied to the equipment of nerve ablation, preferred resistance value about 250 Ω.
In addition, the radio-frequency (RF) ablation equipment that described a kind of how electric level exports also comprises the external interface module be connected with described control unit, for the information interaction between equipment and outside.
compared with prior art, the beneficial effects of the utility model are:
1, the radio-frequency (RF) ablation equipment of a kind of multi-electrode output of the present utility model, by said method, can organize ablating electrode to each and control, prevent a certain group of electrode from causing certain danger because temperature is too high.
2, the radio-frequency (RF) ablation equipment of a kind of multi-electrode output of the present utility model, provide a kind of scheme controlling the output current size of radio circuit, the program better can control the temperature of ablating electrode;
3, the radio-frequency (RF) ablation equipment of a kind of multi-electrode output of the present utility model, provide a kind of scheme that can make multiple ablating electrode timesharing output current, the program can improve the work efficiency of equipment, also effectively can control the temperature of ablating electrode further simultaneously.
Accompanying drawing explanation
Fig. 1 is the structure chart of the radio-frequency (RF) ablation equipment that a kind of multi-electrode of the present utility model exports.
Detailed description of the invention
Face is described in further detail this utility model in conjunction with detailed description of the invention.But this should be interpreted as that the scope of the above-mentioned theme of this utility model is only limitted to following embodiment, all technology realized based on this utility model content all belong to scope of the present utility model.
Embodiment 1:
The structure chart of the radio-frequency (RF) ablation equipment that a kind of multi-electrode shown in this utility model embodiment 1 exports shown in Fig. 1,
The radio-frequency (RF) ablation equipment that how electric level exports, comprising:
Multi-electrode ablation catheter, it comprises N number of ablating electrode, a M temperature sensor, the one or more ablating electrodes in the corresponding described multi-electrode ablation catheter of each temperature sensor; N be greater than 2 integer, M be greater than 1 integer;
RF generating unit, is connected with described multi-electrode ablation catheter, outputs to described multi-electrode ablation catheter for generation of radio-frequency current;
It is characterized in that, also comprise switch element,
Described switch element connection control unit; Described switch element number be N number of and with described ablating electrode one_to_one corresponding, each described switch element is all connected with each ablating electrode, and simultaneously each described switch element is all connected with described RF generating unit;
Wherein, described control unit is for controlling each described switching means conductive thus the described radio-frequency current making described RF generating unit produce outputs to described multi-electrode ablation catheter.
Concrete, in the present embodiment, described multi-electrode ablation catheter has 4 temperature sensors, and the electrodeplate of described one group of ablating electrode is 8, and the number of described switch element is 4;
Described switch element is made up of transformer and MOSFET, and in the present embodiment, corresponding circuits in the radio-frequency (RF) ablation equipment that described switch element circuit uses existing one pole to export, repeats no more again.
Concrete, when the control signal effect that the controlled unit of described MOSFET sends makes the secondary short circuited of transformer described in any one, the impedance of the elementary radio frequency signal of described transformer is very low, and radio-frequency current outputs to electrode; When the control signal effect that the controlled unit of described MOSFET sends makes transformer secondary open circuit described in any one, the impedance of the elementary radio frequency signal of described transformer is very high, and radio-frequency current can not output to electrode.
By said method, ablating electrode can be organized to each and control, prevent a certain group of electrode from causing certain danger because temperature is too high.
Embodiment 2:
The radio-frequency (RF) ablation equipment that a kind of how electric level in the present embodiment exports comprises the content in embodiment 1, and its difference is only,
This equipment also comprises:
Detecting unit, described detecting unit is connected between described multi-electrode ablation catheter and described control unit, for receiving the described temperature value that each described temperature sensor exports, described temperature value is outputted to described control unit;
The temperature value that described control unit exports for each described temperature sensor receiving the output of described detecting unit, if temperature value is higher than predetermined value described in one of them, then disconnects the switch element corresponding to ablating electrode corresponding for this temperature sensor; When this temperature value is lower than described predetermined value, then the switch element corresponding to ablating electrode corresponding for this temperature sensor is closed.
Further, when the described temperature value that each described temperature sensor detects output all exceedes described predetermined value, described control unit sorts from high to low to all described temperature values, by described on-off circuit conducting corresponding for minimum for output temperature value 1 described temperature sensor.
Concrete, in the present embodiment, adopt 4 described temperature sensors to carry out temperature acquisition.Concrete algorithm is the temperature that every 10ms detects 4 temperature sensors, when certain temperature sensor detected temperatures exceedes design temperature or be about to exceed design temperature (estimating will exceed design temperature within the not long time according to specific temperature rise), the switch element that the described control unit control one group ablating electrode corresponding with this temperature sensor connects disconnects, and this temperature sensor surround electrode is marked as disable (switch element shutoff) state; When certain temperature sensor detected temperatures is lower than design temperature, the switch element that the described control unit control one group ablating electrode corresponding with this temperature sensor connects closes, and this temperature sensor surround electrode is marked as enable (switch element closes) state.
In one embodiment, when the temperature of 4 temperature sensors all exceedes setting value, the described on-off circuit conducting that the temperature sensor described in 1 that temperature is lower is corresponding, described on-off circuit corresponding to all the other temperature sensors described in 3 turns off.
By said temperature control method, the ablation site that temperature is too high is taked to the measure stopping melting, can effectively avoid because ablation site temperature is too high and cause certain danger.
Embodiment 3:
The radio-frequency (RF) ablation equipment that a kind of how electric level in the present embodiment exports comprises the content in embodiment 2, and its difference is only,
Further, described control unit is also connected with described RF generating unit, described temperature value specifically for exporting each described temperature sensor received calculates, obtain equalization temperature index, again radio-frequency power regulating index is calculated to described equalization temperature index, regulate by the watt level of described radio-frequency power regulating index to described RF generating unit thus regulate the size of described radio-frequency current.
Concrete, in one embodiment,
Adoption rate integral adjustment algorithm, determines radio frequency power output regulated quantity with temperature difference and rate of temperature change.Computing formula is:
Radio frequency power output regulated quantity=proportionality coefficient × (order mark temperature degree – Current Temperatures)+integral coefficient × (when the upper moment temperature of front temperature degree –) (1).
Because multi-electrode ablation catheter often has multiple temperature sensor, detect the temperature of Different electrodes respectively.The temperature that these temperature sensors obtain is inconsistent often, needs to obtain a Current Temperatures (i.e. described equalization temperature index) according to the temperature of this multiple temperature sensor and calculates radio frequency power output regulated quantity according to formula (1).
But directly the temperature value calculating mean value that this multiple temperature sensor detects is obtained the method for Current Temperatures, easily occur there is the trend that electrode temperature that temperature is higher is higher further certain risk, should not adopt.
Therefore, concrete, the method that this utility model adopts is the weighted mean calculating these 4 temperature sensing actuator temperatures, and adopt different weights according to temperature height, the weight that temperature is higher is larger,
Computing formula is:
Current Temperatures=weight limit × maximum temperature+secondary large weight × secondary high-temperature+secondary little weight × secondary low temperature+minimal weight × minimum temperature (2).
The radio-frequency (RF) ablation equipment that a kind of multi-electrode of the present utility model exports, provide a kind of scheme controlling the output current size of radio circuit, the program better can control the temperature of ablating electrode.
Embodiment 4:
The radio-frequency (RF) ablation equipment that a kind of how electric level in the present embodiment exports comprises the content in embodiment 3, and its difference is only,
Further, described N number of switch element successively every K is divided into one group, obtains at least two group switch element groups, at least two group switch element groups described in described control unit controls once circulate break-make, and wherein N is the integral multiple of K,
If in circulation break-make, too high due to described ablating electrode temperature and cause this electrode pair to be answered switch element disconnect, this switch element does not carry out circulation break-make.
Be conducive to that the fluctuation of ablating electrode temperature and radio frequency power output is changed so less.
Further, described K value is predetermined value of dispatching from the factory.
The object of the break-make that circulates successively is the number of electrodes controlling simultaneously to melt, and makes radio-frequency power circuit working under the loading condition that efficiency is higher.
Further, when described control unit controls described N number of switch element circulation break-make successively, the time of each described switching means conductive is 0.5ms-100ms.
The timesharing output switching time is unsuitable long, otherwise easily makes ablating electrode temperature too high.
Further, during described multi-electrode ablation catheter work, the impedance exported between all ablating electrodes of radio-frequency (RF) energy and neutral electrode of a certain moment remains predetermined resistance value.
Preferably, for different application, described predetermined resistance value is different, due to the difference stating K value number determine the work of described multistage output ablation catheter time, the a certain moment is exporting the size of the resistance value between all ablating electrodes of radio-frequency (RF) energy and neutral electrode, and therefore the size of K value is also different in different applications.Such as: the equipment being applied to cardiac ablation, preferred resistance value about 100 Ω; Be applied to the equipment of nerve ablation, preferred resistance value about 250 Ω.
In actual applications, if all electrodes export radio-frequency (RF) energy simultaneously, the ablating electrode gross area (all ablating electrode area sums) is larger, tissue impedance between ablating electrode and neutral electrode less (often lower than 30 Ω), the work efficiency of radio-frequency power circuit can be reduced like this, implementation result is poor, therefore, control unit controls radio frequency output switch circuit makes radio-frequency (RF) energy circulation timesharing output on each electrode, so any moment is some electrode output radio-frequency (RF) energy only, the load impedance of radio-frequency power circuit can not be made too low, reach better effect.
Concrete, in the present embodiment, for the detected temperatures realizing 4 temperature sensors all reaches design temperature, the radio-frequency (RF) energy timesharing that should circulate outputs on each electrode.Concrete algorithm is 4 the clockwise electrode ablation 500us being marked as enabled state, be switched to 4 the counterclockwise electrode ablation 500us being marked as enabled state, be switched to lower 4 the clockwise electrode ablation 500us being marked as enabled state again, then be switched to lower 4 the counterclockwise electrode ablation 500us being marked as enabled state ... so cyclic switching in the ring of 36 electrode compositions.The electrode being marked as disable state is directly skipped (controlling as turning off), does not participate in melting.Such algorithm ensure that any time of melting, and all has and only has 4 electrode ablation.Keep any time ablating electrode number constant be ensure to melt the key that the basicly stable and temperature of impedance is easy to control.This is relevant with there being 8 electrodes (4 clockwise electrodes and 4 counterclockwise electrodes) around each temperature sensor.
The radio-frequency (RF) ablation equipment that a kind of multi-electrode of the present utility model exports, provide a kind of scheme that can make multiple ablating electrode timesharing output current, the program can improve the work efficiency of equipment, also effectively can control the temperature of ablating electrode further simultaneously.
By reference to the accompanying drawings detailed description of the invention of the present utility model is described in detail above, but this utility model is not restricted to above-mentioned embodiment, in the spirit and scope situation of claim not departing from the application, those skilled in the art can make various amendment or remodeling.
Claims (9)
1. the radio-frequency (RF) ablation equipment that more than, electric level exports, comprising:
Multi-electrode ablation catheter, it comprises N number of ablating electrode, a M temperature sensor, the one or more ablating electrodes in the corresponding described multi-electrode ablation catheter of each temperature sensor; N be greater than 2 integer, M be greater than 1 integer;
RF generating unit, is connected with described multi-electrode ablation catheter, outputs to described multi-electrode ablation catheter for generation of radio-frequency current;
It is characterized in that, also comprise switch element,
Described switch element connection control unit; Described switch element number be N number of and with described ablating electrode one_to_one corresponding, each described switch element is all connected with each ablating electrode, and simultaneously each described switch element is all connected with described RF generating unit;
Wherein, described control unit is for controlling each described switching means conductive thus the described radio-frequency current making described RF generating unit produce outputs to described multi-electrode ablation catheter.
2. the radio-frequency (RF) ablation equipment of a kind of how electric level output according to claim 1, it is characterized in that, each described temperature sensor is for detecting the temperature of described one or more described ablating electrodes when melting within the scope of ablation site of its correspondence;
This equipment also comprises:
Detecting unit, described detecting unit is connected between described multi-electrode ablation catheter and described control unit, for receiving the temperature value that each described temperature sensor exports, described temperature value is outputted to described control unit;
The temperature value that described control unit exports for each described temperature sensor receiving the output of described detecting unit, if the described temperature value that one of them temperature sensor exports is higher than predetermined value, then the switch element corresponding to ablating electrode corresponding for this temperature sensor is disconnected; When the described temperature value that one of them temperature sensor exports is lower than described predetermined value, then the switch element corresponding to ablating electrode corresponding for this temperature sensor is closed.
3. the radio-frequency (RF) ablation equipment of a kind of how electric level output according to claim 2, it is characterized in that, when the described temperature value that each described temperature sensor detects output all exceedes described predetermined value, described control unit sorts from high to low to all described temperature values, by described switching means conductive corresponding for minimum for output temperature value 1 described temperature sensor.
4. the radio-frequency (RF) ablation equipment of a kind of how electric level output according to claim 3, it is characterized in that, described control unit is also connected with described RF generating unit, described temperature value specifically for exporting each described temperature sensor received calculates, obtain equalization temperature index, again radio-frequency power regulating index is calculated to described equalization temperature index, regulate by the watt level of described radio-frequency power regulating index to described RF generating unit thus regulate the size of described radio-frequency current.
5. the radio-frequency (RF) ablation equipment of a kind of how electric level output according to claim 4, is characterized in that,
Described N number of switch element successively every K is divided into one group, obtains at least two group switch element groups, and described control unit also to circulate break-make successively at least two group switch element groups described in controlling, and wherein N is the integral multiple of K;
If in above-mentioned circulation make and break process, too high due to described ablating electrode temperature and cause this ablating electrode corresponding switch element disconnect, then the switch element that this ablating electrode is corresponding does not carry out circulation break-make.
6. the radio-frequency (RF) ablation equipment of a kind of how electric level output according to claim 5, it is characterized in that, the value of described K is predetermined value of dispatching from the factory.
7. the radio-frequency (RF) ablation equipment of a kind of how electric level output according to claim 5, it is characterized in that, when described control unit controls described N number of switch element circulation break-make successively, the time of each described switching means conductive is 0.5ms-100ms.
8. the radio-frequency (RF) ablation equipment of a kind of how electric level output according to claim 5, it is characterized in that, during described multi-electrode ablation catheter work, the impedance exported between all ablating electrodes of radio-frequency (RF) energy and neutral electrode of a certain moment remains predetermined resistance value.
9., according to the radio-frequency (RF) ablation equipment that a kind of how electric level one of claim 1-8 Suo Shu exports, it is characterized in that, also comprise the external interface module be connected with described control unit, for the information interaction between equipment and outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520406725.0U CN204744407U (en) | 2015-06-12 | 2015-06-12 | Many output electrode's radio frequency melts equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520406725.0U CN204744407U (en) | 2015-06-12 | 2015-06-12 | Many output electrode's radio frequency melts equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204744407U true CN204744407U (en) | 2015-11-11 |
Family
ID=54459171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520406725.0U Withdrawn - After Issue CN204744407U (en) | 2015-06-12 | 2015-06-12 | Many output electrode's radio frequency melts equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204744407U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105769332A (en) * | 2016-02-22 | 2016-07-20 | 绵阳立德电子股份有限公司 | Radio frequency energy distribution controller, RFA system and method for controlling radio frequency energy distribution through controller |
| CN106264711A (en) * | 2015-06-12 | 2017-01-04 | 四川锦江电子科技有限公司 | A kind of radio frequency ablation device of multi-electrode output |
-
2015
- 2015-06-12 CN CN201520406725.0U patent/CN204744407U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106264711A (en) * | 2015-06-12 | 2017-01-04 | 四川锦江电子科技有限公司 | A kind of radio frequency ablation device of multi-electrode output |
| CN106264711B (en) * | 2015-06-12 | 2018-11-30 | 四川锦江电子科技有限公司 | A kind of radio frequency ablation device of multi-electrode output |
| CN105769332A (en) * | 2016-02-22 | 2016-07-20 | 绵阳立德电子股份有限公司 | Radio frequency energy distribution controller, RFA system and method for controlling radio frequency energy distribution through controller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106264711B (en) | A kind of radio frequency ablation device of multi-electrode output | |
| CN208274618U (en) | A kind of multi-pole rf ablation apparatus | |
| CN106137381B (en) | Radiofrequency melting instrument, the control method of radiofrequency melting instrument and device | |
| CN108306399A (en) | Charging system and power supply adaptor | |
| CN104052269A (en) | Constant power inverter with crest factor control | |
| CN208481456U (en) | A kind of radio frequency ablation device with interpolar discharge function | |
| CN102761666A (en) | Cell phone and temperature control method of cell phone | |
| CN204744407U (en) | Many output electrode's radio frequency melts equipment | |
| CN204259199U (en) | Electromagnetic Heating control circuit, electromagnetic heater and electromagnetic oven | |
| CN210246626U (en) | High-compatibility one-driving-two parallel inverter induction heating system | |
| CN103769721A (en) | Electric arc welding actuate molten dropping short-circuit transitioning control circuit based on AVR (automatic voltage regulation) singlechip | |
| RU2478244C2 (en) | MELTING METHOD OF GLAZE ICE ON 6( 10 ) kV OVERHEAD TRANSMISSION LINES | |
| CN203655678U (en) | Fan speed regulating circuit, cooling device and household electric appliance | |
| CN205947782U (en) | Biological electricity signal conditioning fusion system | |
| CN207402239U (en) | intelligent electric iron temperature controller | |
| CN106300382B (en) | Control system for In The Sub-mergedfurnace of The Ferroalloys low-voltage compensation apparatus | |
| CN206274342U (en) | Transformation load box with power factor compensation | |
| CN105048633A (en) | Circuit structure for intelligent low-voltage power distribution terminal | |
| CN204683759U (en) | Radio-frequency (RF) ablation equipment | |
| CN208767790U (en) | A kind of power distribution network current compensator | |
| CN204179674U (en) | Mineral hot furnace three phase power adjustment device | |
| CN105299819A (en) | Heating control device of air conditioner and power control method for heating control device | |
| CN104682414B (en) | A kind of many transverters realize off-grid method from grid-connected | |
| EP3580997B1 (en) | Integrated flicker control for arc furnace | |
| CN110123445A (en) | High-frequency high-voltage circuit time-sharing multiplex control device and multielectrode recoding ablation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151111 Effective date of abandoning: 20181130 |
|
| AV01 | Patent right actively abandoned |