CN201365978Y - Radio-frequency nerve pain therapeutic apparatus with real-time impedance monitoring - Google Patents
Radio-frequency nerve pain therapeutic apparatus with real-time impedance monitoring Download PDFInfo
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- CN201365978Y CN201365978Y CNU2009200321628U CN200920032162U CN201365978Y CN 201365978 Y CN201365978 Y CN 201365978Y CN U2009200321628 U CNU2009200321628 U CN U2009200321628U CN 200920032162 U CN200920032162 U CN 200920032162U CN 201365978 Y CN201365978 Y CN 201365978Y
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- frequency
- variable gain
- impedance
- gain amplifier
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Abstract
The utility model relates to a radio-frequency nerve pain therapeutic apparatus with real-time impedance monitoring. The existing radio-frequency therapeutic apparatus with impedance monitoring can only measure the human impedance before operation, but can not dynamically measure and curvilinearly display the change of human impedance values in real time during the whole treatment process, therefore, a doctor has no way to learn the function of radio-frequency treatment and observe the effect, and can only control the optimal treatment parameter and status by virtue of the setup of the temperature value and power value before operation as well as clinical experience. The radio-frequency nerve pain therapeutic apparatus comprises a radio-frequency electrode, a polar plate and a display and operation controller, wherein the radio-frequency electrode and the polar plate forms a signal circuit, the display and operation controller comprises a voltage measuring circuit, a current measuring circuit, a radio-frequency output transformer, an MSP430 singlechip and a direct digital frequency synthesizer DDS. During treatment, the radio-frequency nerve pain therapeutic apparatus ceaselessly acquires and measures the dynamic human impedance value, displays data and curves in real time and helps the doctor observe the treatment action according to the impedance change of nidus.
Description
Technical field
This utility model belongs to medical instruments field, is specifically related to a kind of radio frequency neuralgia therapeutic instrument with real-time impedance monitoring.
Technical background
Current, radio frequency minimally-invasive treatment technology has characteristics such as Wicresoft, fast the town is painful, complication and side effect incidence rate are very low, the size that it regulates radio frequency power output by the electricity irritation test and the human body impedance monitoring system of radio-frequency (RF) therapy equipment itself, operative temperature is set, can accurately controls the scope of damage kitchen range.This technology is a kind of physical property nerve block therapy, can foolproofly treat, and the constitutional trigeminal neuralgia, the little arthritis of spinal column, prolapse of lumbar intervertebral disc and other neuropathic pain, this technology is progressively promoted in the medical circle clinical practice just at home at present.But the radio-frequency therapeutic equipment of known band impedance monitoring only can be measured human body impedance before operation, and can not be at the variation real time dynamic measurement and the curve display of human body impedance value in the overall process of treatment.Thereby in the process of treatment, the doctor has no way of learning that the effect of radio-frequency (RF) therapy manifests and observation on effect.Can only be by the setting of preoperative temperature value and performance number, add that clinical experience controls optimal treatment parameter and state, this is the weak point of general radio-frequency therapeutic equipment.
The utility model content
The purpose of this utility model is to provide a kind of radio frequency neuralgia therapeutic instrument with real-time impedance monitoring, can carry out the monitoring of overall process real-time and dynamic and show the focus impedance variation in the overall process of treatment, assist a physician and judge the residing position of radio frequency syringe needle according to the human body impedance value, in the treatment overall process, observe the effect of treatment according to the impedance variation of focus, and judge therapeutic effect.
For achieving the above object the technical scheme that this utility model is taked:
Special character of the present utility model is: comprise radio-frequency electrode, pole plate, demonstration and operation control, radio-frequency electrode and pole plate constitute signal circuit; Described demonstration and operation control comprise tension measuring circuit, current measurement circuit, radio frequency output transformer, MSP430 single-chip microcomputer, Direct Digital Frequency Synthesizers DDS; Described tension measuring circuit comprises variable gain amplifier U19, RMS/DC conversion chip U7, and the CEU port of radio-frequency power output transformer T4 and 3 feet of variable gain amplifier link, and RMS/DC conversion chip U7 and MSP430 single-chip microcomputer 60 feet link; Described current measurement circuit comprises variable gain amplifier U17, RMS/DC conversion chip U18,3 feet of variable gain amplifier link with the CEI port that is serially connected in the transformer secondary output in the radio-frequency electrode loop, and RMS/DC conversion chip U18 and MSP430 single-chip microcomputer 58 feet link; Link by 74hc574 between described variable gain amplifier U19 and variable gain amplifier U17 and the Direct Digital Frequency Synthesizers DDS.
The beneficial effects of the utility model:
This utility model can be in therapeutic process, do not influence the continuous output (treatment continuously) of radio-frequency power, continual collection simultaneously and measurement dynamic human body resistance value, and carry out real-time video data and curve, overcome the deficiency that existing radiofrequency generator can not omnidistance dynamic real-time measurement impedance, obtain doctors' favorable comment through clinical trial, produce a desired effect.
Description of drawings
Fig. 1 is a circuit connection diagram of the present utility model.
The specific embodiment
Below in conjunction with the specific embodiment this utility model is elaborated.
Referring to Fig. 1, tension measuring circuit: form by the LTC69102 programme-control variable gain amplifier of U19 and the AD536 of U7 (RMS/DC conversion chip).The extraction of impedance voltage information is the CEU port from radio-frequency power output transformer T4, signal is sent into the 3. foot of U19, with after the voltage amplification of faint band impedance information from the output of 1. foot, send into the 4. foot VIN end of U7, through further RMS/DC conversion, amplification, inhibition common mode, by 8. foot BOUT end output, behind the π type low-pass filter circuit that C23, C24, C25, C26 and L2 form, the voltage signal of impedance information is sent into the MSP430 single-chip microcomputer by the AD3 label more again
Foot carries out A/D conversion, demodulation, algorithm and reappears the impedance operator value in sheet.
Current measurement circuit, amplified AD536 (RMS/DC conversion chip) circuit of a little and U18 is made up of the LTC69102 programme-control variable gain of U17, different is the extraction of band by the current signal of impedance information, it is the CEI port of T3 transformer secondary output from serial connection and radio-frequency electrode loop, current signal is sent into the 3. foot of U17, equally the current signal amplification of faint band impedance change signal is exported from the 1. foot of U17, send into the 4. foot of U18 (AD536), the RMS/DC conversion, suppress common mode, again by 8. foot output, through C39, C41, C42, send into the MSP430 single-chip microcomputer by the AD1 end behind the low pass filter that L3 forms, 58 feet carry out the A/D conversion in the single-chip microcomputer sheet, the demodulation scheduling algorithm is handled, and reappears and demonstration impedance variation characteristic value.
The program gain control signal carries out voltage gain control by DDS (Direct Digital Frequency Synthesizers) AD9852 sends into U19 (LTC69102) again through 15,16,17 feet of U5 (74HC574) 5,6,7 feet.
5,6,7 feet that UV17 is sent in 12,13, the 14 feet output of U5 (74HC574) carry out current gain control.
Indulge the above, circuit of the present utility model is amplified and conversion by signal excitation, signal sampling extraction, voltage, current signal, and control of single place machine and treatment circuit composition, the all orderly work under the control by MSP430 main control singlechip software program of these several parts, finished the continuous uninterrupted impedance information in whole radio frequency output (treatment) process collection, catch, amplify, change, handle and show overall process, this utility model through repeatedly clinical practice, has been obtained obvious effects.
Claims (1)
1, with the radio frequency neuralgia therapeutic instrument of real-time impedance monitoring, it is characterized in that: the radio frequency neuralgia therapeutic instrument of the real-time impedance monitoring of described band comprises radio-frequency electrode, pole plate, demonstration and operation control, and radio-frequency electrode and pole plate constitute signal circuit; Described demonstration and operation control comprise tension measuring circuit, current measurement circuit, radio frequency output transformer, MSP430 single-chip microcomputer, Direct Digital Frequency Synthesizers DDS; Described tension measuring circuit comprises variable gain amplifier U19, RMS/DC conversion chip U7, and the CEU port of radio-frequency power output transformer T4 and 3 feet of variable gain amplifier link, and RMS/DC conversion chip U7 and MSP430 single-chip microcomputer 60 feet link; Described current measurement circuit comprises variable gain amplifier U17, RMS/DC conversion chip U18,3 feet of variable gain amplifier link with the CEI port that is serially connected in the transformer secondary output in the radio-frequency electrode loop, and RMS/DC conversion chip U18 and MSP430 single-chip microcomputer 58 feet link; Link by 74hc574 between described variable gain amplifier U19 and variable gain amplifier U17 and the Direct Digital Frequency Synthesizers DDS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200321628U CN201365978Y (en) | 2009-03-11 | 2009-03-11 | Radio-frequency nerve pain therapeutic apparatus with real-time impedance monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200321628U CN201365978Y (en) | 2009-03-11 | 2009-03-11 | Radio-frequency nerve pain therapeutic apparatus with real-time impedance monitoring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201365978Y true CN201365978Y (en) | 2009-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200321628U Expired - Fee Related CN201365978Y (en) | 2009-03-11 | 2009-03-11 | Radio-frequency nerve pain therapeutic apparatus with real-time impedance monitoring |
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| CN (1) | CN201365978Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101889858A (en) * | 2010-07-12 | 2010-11-24 | 石平安 | Design and new application of needle-knife minimally invasive nerve detecting instrument |
| CN112842514A (en) * | 2020-12-31 | 2021-05-28 | 杭州堃博生物科技有限公司 | Ablation operation prompting method, electronic device and computer readable storage medium |
-
2009
- 2009-03-11 CN CNU2009200321628U patent/CN201365978Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101889858A (en) * | 2010-07-12 | 2010-11-24 | 石平安 | Design and new application of needle-knife minimally invasive nerve detecting instrument |
| CN101889858B (en) * | 2010-07-12 | 2013-06-19 | 石平安 | Design and new application of needle-knife minimally invasive nerve detecting instrument |
| CN112842514A (en) * | 2020-12-31 | 2021-05-28 | 杭州堃博生物科技有限公司 | Ablation operation prompting method, electronic device and computer readable storage medium |
| WO2022141688A1 (en) * | 2020-12-31 | 2022-07-07 | 杭州堃博生物科技有限公司 | Ablation operation prompting method, electronic device, and computer-readable storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091223 Termination date: 20120311 |