CN201453373U - Radiofrequency ablation therapy instrument capable of controlling cold brine perfusion automatically - Google Patents
Radiofrequency ablation therapy instrument capable of controlling cold brine perfusion automatically Download PDFInfo
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- CN201453373U CN201453373U CN 200920092326 CN200920092326U CN201453373U CN 201453373 U CN201453373 U CN 201453373U CN 200920092326 CN200920092326 CN 200920092326 CN 200920092326 U CN200920092326 U CN 200920092326U CN 201453373 U CN201453373 U CN 201453373U
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- radiofrequency ablation
- ablation therapy
- cool brine
- cold brine
- brine perfusion
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Abstract
The utility model discloses a radiofrequency ablation therapy instrument capable of controlling cold brine perfusion automatically which comprises a radiofrequency ablation therapy instrument, a cold brine perfusion pump, a foot-press switch, a back plate and a cold brine perfusion guiding pipe, wherein the cold brine perfusion pump is connected with the radiofrequency ablation therapy instrument through a cable, the foot-press switch, the back plate and the cold brine perfusion guiding pipe are respectively connected with corresponding interfaces on the radiofrequency ablation therapy instrument, two ADmuC812 control chips are installed in the radiofrequency ablation therapy instrument, one piece is connected with a keyboard, a liquid crystal display, a recognizing device of the cold brine perfusion guiding pipe and the cold brine perfusion pump, the other piece is connected with a radiofrequency output device and a PC machine connecting serial port, and the two ADmuC812 chips are connected through a I2C bus bar. The radiofrequency ablation therapy instrument can set parameters according to conditions of patients, can automatically finish or manual finish controlling cold brine perfusion, which is convenient for doctors to save time, to improve the operation effect, and to lower the operation risk.
Description
Technical field
This utility model relates to technical field of medical instruments, especially relates to a kind ofly can controlling the dabbling rf ablation therapeutic instrument of cool brine automatically.
Background technology
Common ablating electrode easily forms localized hyperthermia on the target spot surface, has both easily facilitated thrombosis, eschar, promotes pulmonary venous stenosis to take place, and also is difficult for forming saturating wall damage, reduces electric isolating effect.The cool brine open irrigated ablation catheters has just in time solved this difficulty.Dabbling cool brine can reduce the target spot interface temperature, and it is controlled in 50 ℃, has prolonged discharge time, has increased the electric energy lesion depths.Cool brine perfusion cannula radiofrequency ablation therapy success rate at once is 100%, and success rate at a specified future date can reach 88.5%.Brain soldier, the formation of conduit eschar can take place during the routine catheter ablation, cool brine perfusion cannula radio-frequency (RF) ablation does not have complication and takes place, from clinical, the ARR curative effect of cool brine perfusion cannula radiofrequency ablation therapy and safe especially more has superiority to the darker arrhythmia in position.
Catheter ablation art (RFCA) is the new technique that develops very fast treatment tachyarrhythmia for over ten years, and its therapeutic domain and indication also constantly enlarge.It is had higher requirement and stern challenge to electrophysiologists, requires them at short notice patient to be made correct diagnosis, on top of the conduit operating technology.Therefore, need cool brine perfusion radiofrequency ablation therapy equipment a kind of simple to operate, easy to use.
The utility model content
In view of this, the purpose of this utility model is to provide a kind of can control the dabbling rf ablation therapeutic instrument of cool brine automatically, can be according to patient's situation setup parameter, automatically finish or manually finish the perfusion of control cool brine, to make things convenient for Doctors' Day to save time, improve surgical effect, reduce operation risk.
This utility model is by the following technical solutions: a kind ofly can control the dabbling rf ablation therapeutic instrument of cool brine automatically, comprise radiofrequency ablation therapy device 3, cool brine charge pump 1, foot switch 2, back pole plate 4 and cool brine perfusion cannula 5, cool brine charge pump 1 is connected with radiofrequency ablation therapy device 3 by cable, foot switch 2, back pole plate 4 and cool brine perfusion cannula 5 are connected with corresponding interface on the radiofrequency ablation therapy device 3 respectively, wherein, two AD μ C812 control chips are installed in the described radiofrequency ablation therapy device 3, a slice connects keyboard, liquid crystal display, cool brine perfusion cannula recognition device and cool brine charge pump 1, another sheet connects the radio frequency output device and PC connects serial ports, and two AD μ C812 chips pass through I
2The C bus connects.
Further, be connected to 485 interfaces between described radiofrequency ablation therapy device 3 and the cool brine charge pump 1,485 interfaces are made of the MAX487 chip.
The beneficial effects of the utility model are:
1, power mode of the present utility model can effectively transmit desired power, eliminates the influence of regional flow, reaches the required generating number of times of same effect and significantly reduces, and by adjusting output, can control the size and the degree of depth of scar;
2, the higher head end electrode temperature of safety effectively reduces the risk that forms a scab;
3, accurately signal is clear, the scar boundary is clearly demarcated.
Set forth in the following description, and to a certain extent, based on being conspicuous to those skilled in the art, perhaps can from practice of the present utility model, obtain instruction to investigating hereinafter. target of the present utility model and other advantages can realize and obtain by specifically noted structure in following description or the accompanying drawing.
Description of drawings
Fig. 1 structural representation of the present utility model;
Fig. 2 fundamental diagram of the present utility model;
Conduit head end temperature comparison diagram before and after the perfusion in Fig. 3 this utility model radiofrequency ablation procedures;
The dabbling radiofrequency ablation procedures of Fig. 4 this utility model cool brine.
The specific embodiment
Below in conjunction with drawings and Examples this utility model is further described:
As shown in Figure 1, this utility model comprises radiofrequency ablation therapy device 3, cool brine charge pump 1, foot switch 2, back pole plate 4 and cool brine perfusion cannula 5, foot switch 2, back pole plate 4 and cool brine perfusion cannula 5 connect by the corresponding interface on lead and the radiofrequency ablation therapy device 3 respectively, this utility model is connected radiofrequency ablation therapy device 3 by a quad with cool brine charge pump 1, form whole cool brine filling system.
Filling process can adopt manual or automatic dual mode: manual mode is by situation straightforward manipulation cool brine charge pump 1 and the ordering parameter of user according to the patient, as startup, low speed, at a high speed, stop; Automated manner is then controlled according to the parameter that presets by radiofrequency ablation therapy device 3, after the doctor adjusts through necessity, radiofrequency ablation therapy device 3 is set to automatic gear, when the starting power valve, automatically the startup of control cool brine charge pump 1, low speed, at a high speed, stop, in whole radiofrequency ablation procedures, the speed of cool brine charge pump 1 is controlled automatically by radiofrequency ablation therapy device 3.
These radiofrequency ablation therapy device 3 peak power outputs are 100W, the various conduits of selling on the compatible market.Directly utilization radio-frequency power releasing mode melts, can be because can't in time understand the danger that patient increases operation.This utility model comprises three kinds of working methods: power mode, temperature control mode and cool brine reperfusion mode.Power mode is to heat as the mode of providing standard with power, rather than with temperature as control criterion, the temperature control conduit also can adopt power mode to carry out work, monitor temperature changes simultaneously.Temperature control mode of the present utility model, have two thermometric control functions, two thermometric control functions are used two temperature transducers, be called near-end and far-end, two temperature values show simultaneously during work, control is that target can be implemented temp sensing function with the far-end, helps the doctor to judge at therapeutic process, makes temperature control more accurate; The cool brine perfusion functional is transmitted power effectively, eliminates the blood flow influence, can control the size and the degree of depth of scar, makes the head end electrode temperature lower, can effectively reduce the incrustation risk.
Shown in Figure 3 is cool brine perfusion front and back conduit head end temperature variation curve in the radiofrequency ablation procedures, in the time of from figure, can demonstrating the perfusion of no cool brine, cool brine perfusion cannula 5 head end temperature can be up to 62 ℃, have only 42 ℃ and add cool brine when perfusion cool brine perfusion cannula 5 head end temperature, thereby reduce the risk of incrustation or formation thromboembolism greatly, increased the safety of operation.
Shown in Figure 4 is the dabbling radiofrequency ablation procedures of cool brine, the flow velocity of cool brine charge pump 1 is to cool brine perfusion cannula 5 head end Temperature Influence, the banded figure of upper end refers to the flow velocity of cool brine charge pump 1, and the banded figure of lower end refers to cool brine perfusion cannula 5 conductor housing temperature.Its practical process is: form whole cool brine filling system by foundation shown in Figure 1; Open radiofrequency ablation therapy device 3, open the cool brine filling system after configuring parameter according to patient, keep low-lift pump 2ml/min flow; Radio-frequency (RF) ablation begins to open in preceding 5 seconds high-pressure pump, and the conductor housing temperature has one and falls the process that afterwards rises earlier, and radio-frequency (RF) ablation finishes to close the high pressure flow system after 5 seconds.In whole radiofrequency ablation procedures, can set different parameters according to the arrhythmia that the different causes of disease cause, for example:
| Indication | Atrial fibrillation | The room is pounced on | Supraventricular tachycardia | Chamber speed |
| Power bracket | 10-30W | 10-30W | 10-30W | 30-50W |
| Temperature is set | 45-50℃ | 45-50℃ | 45-50℃ | 45-50℃ |
| Low discharge | 2ml/min | 2ml/min | 2ml/min | 2ml/min |
| High flow capacity when melting | 17ml/min | 17ml/min | 17ml/min | 30ml/min |
| Melt the time | 30-60S | 30-60S | 30-60S | 60-120S |
Shown in Figure 2 is fundamental diagram of the present utility model, and radiofrequency ablation therapy device 3 of the present utility model adopts two MCU controls, and MCU adopts AD μ C812 chip.The direct supervisory keyboard of a slice AD μ C812 chip, liquid crystal display, cool brine perfusion cannula recognition device and cool brine charge pump 1; Another sheet AD μ C812 chip controls radio frequency output device reaches and is connected serial ports with PC, and I is then passed through in the connection of two MCU
2The C bus realizes.I/V is electric current, voltage feedback circuit; Sine wave generating circuit then can produce the sine wave of 450KHz; Ferroelectric memory is used to store the parameter that be provided with last time.Cool brine perfusion cannula recognition device is to adopt the double speed pump in radiofrequency ablation procedures, uses the cool brine perfusion cannula, catheter tip has the water outlet pore, keep the low speed perfusion in the operation process, when radio frequency is provided, earlier charge pump was changed to fast state 10 seconds, export energy again, the energy granting is finished and was stopped fast state in 10 seconds, by the cooling of cool brine perfusion cannula top, prevents the target spot eschar, avoid having blood crusts to attach, perfusion cool brine in the radio frequency heating at electrode surface.
Adopt 485 interface modes to carry out information exchange between radiofrequency ablation therapy device 3 and the cool brine charge pump 1, interface adopts the MAX487 chip to be used for controlling transmission.Communication interface adopts the Uart mouth; The serial ports frame adopts 10 frames, 1 start bit, 8 bit data positions, 1 position of rest and no parity position; Baud rate is 9600bps; Level is TTL-TTL.Data format adopts the form of packet to carry out data and transmits, and by packet header, data volume, verification and, bag tail four parts form.Data volume adopts hexadecimal data; Verification and be in the data volume each byte add up and low byte, hexadecimal is used for the verification to the data volume data.During communication, the data that transmit leg will send are earlier formed data volume by the form of agreement regulation, and obtain check and, after the recipient receives data then, unpack according to corresponding form, and whether verification is correct, then carries out function corresponding according to the content that receives as correct.
In whole cool brine filling process, this utility model also provides warning function, and cool brine charge pump 1 is in operation, warning automatically when stopping; When occur blocking, having equally when unusual warning function in the operation process.
Claims (2)
1. can control the dabbling rf ablation therapeutic instrument of cool brine automatically for one kind, comprise radiofrequency ablation therapy device (3), cool brine charge pump (1), foot switch (2), back pole plate (4) and cool brine perfusion cannula (5), cool brine charge pump (1) is connected with radiofrequency ablation therapy device (3) by cable, foot switch (2), back pole plate (4) and cool brine perfusion cannula (5) are connected with corresponding interface on the radiofrequency ablation therapy device (3) respectively, it is characterized in that: two AD μ C812 control chips are installed in the described radiofrequency ablation therapy device (3), a slice connects keyboard, liquid crystal display, cool brine perfusion cannula recognition device and cool brine charge pump (1), another sheet connects the radio frequency output device and PC connects serial ports, and two AD μ C812 chips pass through I
2The C bus connects.
2. can control the dabbling rf ablation therapeutic instrument of cool brine automatically according to claim 1 is described, it is characterized in that: described radiofrequency ablation therapy device (3) adopts 485 interface modes to carry out information exchange with cool brine charge pump (1), and interface adopts the transmission of MAX487 chip controls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920092326 CN201453373U (en) | 2009-08-12 | 2009-08-12 | Radiofrequency ablation therapy instrument capable of controlling cold brine perfusion automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920092326 CN201453373U (en) | 2009-08-12 | 2009-08-12 | Radiofrequency ablation therapy instrument capable of controlling cold brine perfusion automatically |
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| Publication Number | Publication Date |
|---|---|
| CN201453373U true CN201453373U (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200920092326 Expired - Lifetime CN201453373U (en) | 2009-08-12 | 2009-08-12 | Radiofrequency ablation therapy instrument capable of controlling cold brine perfusion automatically |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104248469A (en) * | 2013-06-28 | 2014-12-31 | 上海微创电生理医疗科技有限公司 | Cold saline perfusion ablation catheter system |
| CN106137379A (en) * | 2015-03-26 | 2016-11-23 | 四川锦江电子科技有限公司 | Charge pump, the control method of charge pump and device |
| CN107242901A (en) * | 2011-06-03 | 2017-10-13 | 维兰德·K·沙马 | Method and apparatus for ablation of tissue |
| CN109152601A (en) * | 2016-05-18 | 2019-01-04 | 奥林匹斯冬季和Ibe有限公司 | Surgical operating instrument, especially Electrosurgical instrument |
-
2009
- 2009-08-12 CN CN 200920092326 patent/CN201453373U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107242901A (en) * | 2011-06-03 | 2017-10-13 | 维兰德·K·沙马 | Method and apparatus for ablation of tissue |
| CN107242901B (en) * | 2011-06-03 | 2021-03-05 | 维兰德·K·沙马 | Method and apparatus for tissue ablation |
| CN104248469A (en) * | 2013-06-28 | 2014-12-31 | 上海微创电生理医疗科技有限公司 | Cold saline perfusion ablation catheter system |
| CN104248469B (en) * | 2013-06-28 | 2017-05-10 | 上海微创电生理医疗科技有限公司 | Cold saline perfusion ablation catheter system |
| CN106137379A (en) * | 2015-03-26 | 2016-11-23 | 四川锦江电子科技有限公司 | Charge pump, the control method of charge pump and device |
| CN109152601A (en) * | 2016-05-18 | 2019-01-04 | 奥林匹斯冬季和Ibe有限公司 | Surgical operating instrument, especially Electrosurgical instrument |
| CN109152601B (en) * | 2016-05-18 | 2022-10-14 | 奥林匹斯冬季和Ibe有限公司 | Surgical instrument and use thereof with FRAM storage device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100512 |
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| CX01 | Expiry of patent term |