CN204734475U - Neural monitor - Google Patents
Neural monitor Download PDFInfo
- Publication number
- CN204734475U CN204734475U CN201520263510.8U CN201520263510U CN204734475U CN 204734475 U CN204734475 U CN 204734475U CN 201520263510 U CN201520263510 U CN 201520263510U CN 204734475 U CN204734475 U CN 204734475U
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- CN
- China
- Prior art keywords
- nerve
- signal amplifier
- electrostimulator
- nerve monitor
- wave filter
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- 230000001537 neural effect Effects 0.000 title abstract description 14
- 210000005036 nerve Anatomy 0.000 claims abstract description 46
- 230000000638 stimulation Effects 0.000 claims abstract description 13
- 239000000523 sample Substances 0.000 claims abstract description 10
- 210000003205 muscle Anatomy 0.000 claims abstract description 6
- 230000003183 myoelectrical effect Effects 0.000 claims description 18
- 238000012954 risk control Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims 1
- 230000001771 impaired effect Effects 0.000 abstract 2
- 210000004126 nerve fiber Anatomy 0.000 abstract 1
- 230000003767 neural control Effects 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 230000004118 muscle contraction Effects 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 4
- 210000001519 tissue Anatomy 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 208000028867 ischemia Diseases 0.000 description 2
- 208000028389 Nerve injury Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000005534 acoustic noise Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036770 blood supply Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000009760 functional impairment Effects 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008764 nerve damage Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 208000037816 tissue injury Diseases 0.000 description 1
Abstract
The utility model relates to a neural monitor, including the neural monitor host computer, the electrical stimulator who connects amazing probe is connected with the neural monitor host computer, and amazing probe carries out the electric current stimulation to the nerve that there is impaired risk in the patient, the neural monitor host computer still is connected with the wave filter, and signal amplifier is connected to the wave filter, and signal amplifier is connected with the pin electrode, and record flesh current potential transmits to signal amplifier there is the neural control's of impaired risk muscle in needle electrode into to the patient in. The utility model discloses a neural monitor uses signal amplifier and wave filter to come the flesh current potential of reinforcing record through decay noise signal to make the flesh current potential clearer, in order to realize more simply, swiftly fixing a position the nerve fiber, produce the neurotrosis in avoiding performing the operation.
Description
Technical field
This utility model relates to a kind of nerve monitor, is mainly used in Neural monitoring in surgical operation, belongs to field of medical device.
Background technology
In surgical operation, tractive, extruding or the heat using coagulation to produce are the wound factors causing neural tissue injury.If operation technique damage blood supplies or folder closes tremulous pulse and causes ischemia intentionally, likely cause neural permanent (ischemia) damage, thus cause the risk of significant postoperative nerve functional impairment.Neural monitoring instrument applies in operation, by monitoring nervus motorius, assists surgeon's operation technique, can reduce the infringement to nerve.
In operation process, in the muscle that the nerve that needle electrode is inserted into damaged risk controls, detect the myoelectric potential that muscle contraction produces, monitor record myoelectric potential forms electromyogram.In myoelectric potential production process, idioneural action also can cause muscle contraction and produce myoelectric potential, and in actual operation process, what need record is the myoelectric potential produced because galvanism nerve causes muscle contraction, therefore the myoelectric potential that self action neural produces is referred to as noise signal.Noise signal can affect the location of doctor to nervous tissue to the interference effect of the myoelectric potential that galvanism produces.
Utility model content
The technical problems to be solved in the utility model is that myoelectric potential (noise signal) the nerve monitoring that self action neural produces has interference effect, make nerve monitor can not fast, accurate localize neural tissue.
In order to solve the problems of the technologies described above, the technical scheme that this utility model adopts is: nerve monitor, comprise nerve monitor main frame, the electrostimulator connecting stimulation probe is connected with nerve monitor main frame, and stimulation probe carries out galvanism to the nerve that patient exists damaged risk; Nerve monitor main frame is also connected with wave filter, wave filter connection signal amplifier, and signal amplifier is connected with needle electrode, and needle electrode is inserted in the muscle that nerve that patient exists damaged risk controls and records myoelectric potential and pass to signal amplifier.
Described nerve monitor main frame is also connected with speaker.
Described electrostimulator output mode has constant voltage to export and constant current output.
The maximal stimulus pulse frequency 30Hz of described electrostimulator; Pulse width can arrange output 100 μ s, 200 μ s, 300 μ s, 400 μ s, 500 μ s five pulse widths; Stimulate output current intensity adjustable within the scope of 0.5mA ~ 10mA, stepping-in amount 0.5mA; Stimulate output voltage amplitude adjustable within the scope of 0.5V ~ 10V, stepping-in amount 0.5V.
The beneficial effects of the utility model are, the principle of the delayed 0.5ms-0.7ms of the muscle contraction signal reaction that the muscle contraction utilizing idioneural action to produce produces than electrical stimulation, takes filtering technique can filter out noise signal simultaneously again after first myoelectric potential and noise signal being amplified.Nerve monitor of the present utility model uses signal amplifier and wave filter to strengthen the myoelectric potential of record by attenuate acoustic noise signal, thus makes myoelectric potential clearly, to realize more simply, localize neural tissue quickly, produces nerve injury in avoiding performing the operation.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, this utility model is further illustrated.
Fig. 1 this utility model structural representation in a state of use.
Fig. 2 is nerve monitor circuit theory diagrams.
1. nerve monitor main frame, 2 electrostimulators, 3 stimulation probes, 4 patients, 5 needle electrodes, 6 signal amplifiers, 7 wave filter, 8 speakers, 9 RCCBs, 10 control transformers, 11 radiator fans, 12 master boards.
Detailed description of the invention
Nerve monitor of the present utility model, comprises nerve monitor main frame 1, and electrostimulator 2 is connected with the governor circuit of nerve monitor main frame 1, electrostimulator 2 connects stimulation probe 3, stimulation probe 3 is connected with patient 4, exports the electric current of some strength, stimulates the nerve that there is damaged risk.Nerve monitor 1 connects wave filter 7 and speaker 8 again simultaneously, wave filter 7 connection signal amplifier 6, and signal amplifier 6 is connected with needle electrode 5, and needle electrode 5 is inserted into patient 4 to be existed in the muscle of nerve control of damaged risk.
In surgical operation, first carry out constant current or constant voltage stimulation with stimulation probe 3 to the nerve that there is damaged risk, there is the nerve of damaged risk after being subject to electricity irritation, one or more muscle of its domination can produce electricity reaction and myoelectric potential.Needle electrode 5 records myoelectric potential and passes to signal amplifier 6, and signal amplifier 6 passes to wave filter 7 again after myoelectric potential being amplified and carries out signal filtering.Wave filter 7 filters out the noise signal that needle electrode 5 records, and filtered myoelectric potential is passed to nerve monitor main frame 1, forms electromyogram.Filtered myoelectric potential changes into acoustical signal again, then feeds back to surgical doctor by speaker 8, and surgical doctor can adjust operation technique accordingly by it.
Fig. 2 is nerve monitor circuit theory diagrams, after three-phase power plug powers on, protects whole circuit through RCCB 9.Electrostimulator 2 is connected respectively to live wire L1 and zero line N1 two ends after being connected with electrostimulator relay K A1 coil.Signal amplifier 6 is connected respectively to live wire L1 and zero line N1 two ends after being connected with signal amplifier relay K A2 coil.Wave filter 7 is connected respectively to live wire L1 and zero line N1 two ends after being connected with wave filter relay K A3 coil.On and off switch K controls whole control motherboard circuit.Live wire L2 and zero line N2 through control transformer 10 be connected to control mainboard 12 after convert 24V DC voltage to controlling mainboard 12 and powering.Radiator fan 11 and speaker 8 are connected respectively to live wire L2 and zero line N2 two ends.Radiator fan 11 is for giving nerve monitor main frame internal heat dissipating.Control electrostimulator control module 21 on mainboard 12 to be connected with one end of live wire L2, electrostimulator relay K A1 respectively by terminal COM01, Q01, the other end of electrostimulator relay K A1 is connected with zero line N2.Control signal amplifier control module 61 on mainboard 12 to be connected with one end of live wire L2, KA2 respectively by terminal COM02, Q02, the other end of signal amplifier relay K A2 is connected with zero line N2.Control mainboard 12 upper filter control module 71 to be connected with one end of live wire L2, wave filter relay K A3 respectively by terminal COM03, Q03, the other end of KA3 is connected with zero line N2.Signal amplifier control module 61 is connected with filter control module 71 by 8 data lines, transmission data.
Claims (8)
1. nerve monitor, comprises nerve monitor main frame, it is characterized in that: the electrostimulator connecting stimulation probe is connected with nerve monitor main frame, and stimulation probe carries out galvanism to the nerve that patient exists damaged risk; Nerve monitor main frame is also connected with wave filter, wave filter connection signal amplifier, and signal amplifier is connected with needle electrode, and needle electrode is inserted in the muscle that nerve that patient exists damaged risk controls and records myoelectric potential and pass to signal amplifier.
2. nerve monitor according to claim 1, is characterized in that: described nerve monitor main frame is also connected with speaker.
3. nerve monitor according to claim 1, is characterized in that: described electrostimulator output mode has constant voltage to export and constant current output.
4. nerve monitor according to claim 1, is characterized in that: the maximal stimulus pulse frequency 30Hz of described electrostimulator.
5. nerve monitor according to claim 1, is characterized in that: the pulse width of described electrostimulator can arrange output 100 μ s, 200 μ s, 300 μ s, 400 μ s, 500 μ s five pulse widths.
6. nerve monitor according to claim 1, is characterized in that: the stimulation output current intensity of described electrostimulator is adjustable within the scope of 0.5mA ~ 10mA, stepping-in amount 0.5mA;
Nerve monitor according to claim 1, is characterized in that: the stimulation output voltage amplitude of described electrostimulator is adjustable within the scope of 0.5V ~ 10V, stepping-in amount 0.5V.
7. nerve monitor according to claim 1, it is characterized in that: be connected with electrostimulator control module on control mainboard after electrostimulator is connected with electrostimulator relay K A1 coil, be connected with the signal amplifier control module controlled on mainboard after signal amplifier is connected with signal amplifier relay K A2 coil, be connected with the filter control module controlled on mainboard after wave filter is connected with wave filter relay K A3 coil; Signal amplifier control module is connected with filter control module by 8 data lines, transmission data.
8. nerve monitor according to claim 1, is characterized in that: the circuit of described nerve monitor is provided with earth leakage protective device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520263510.8U CN204734475U (en) | 2015-04-28 | 2015-04-28 | Neural monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520263510.8U CN204734475U (en) | 2015-04-28 | 2015-04-28 | Neural monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204734475U true CN204734475U (en) | 2015-11-04 |
Family
ID=54416242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520263510.8U Active CN204734475U (en) | 2015-04-28 | 2015-04-28 | Neural monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204734475U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104799842A (en) * | 2015-04-28 | 2015-07-29 | 山东威高集团医用高分子制品股份有限公司 | Nerve monitor |
| CN110251127A (en) * | 2019-07-24 | 2019-09-20 | 江苏百宁盈创医疗科技有限公司 | A kind of nerve monitor device |
-
2015
- 2015-04-28 CN CN201520263510.8U patent/CN204734475U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104799842A (en) * | 2015-04-28 | 2015-07-29 | 山东威高集团医用高分子制品股份有限公司 | Nerve monitor |
| CN110251127A (en) * | 2019-07-24 | 2019-09-20 | 江苏百宁盈创医疗科技有限公司 | A kind of nerve monitor device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |