CN116139409A - Anti-interference magnetic therapy detection system, threshold detection method and all-in-one machine - Google Patents
Anti-interference magnetic therapy detection system, threshold detection method and all-in-one machine Download PDFInfo
- Publication number
- CN116139409A CN116139409A CN202310404783.9A CN202310404783A CN116139409A CN 116139409 A CN116139409 A CN 116139409A CN 202310404783 A CN202310404783 A CN 202310404783A CN 116139409 A CN116139409 A CN 116139409A
- Authority
- CN
- China
- Prior art keywords
- signal
- electrode wire
- signals
- interference
- main board
- 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.)
- Granted
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N2/00—Magnetotherapy
- A61N2/004—Magnetotherapy specially adapted for a specific therapy
- A61N2/006—Magnetotherapy specially adapted for a specific therapy for magnetic stimulation of nerve tissue
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
- A61B5/251—Means for maintaining electrode contact with the body
- A61B5/257—Means for maintaining electrode contact with the body using adhesive means, e.g. adhesive pads or tapes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
- A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
- A61B5/296—Bioelectric electrodes therefor specially adapted for particular uses for electromyography [EMG]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/389—Electromyography [EMG]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N2/00—Magnetotherapy
- A61N2/02—Magnetotherapy using magnetic fields produced by coils, including single turn loops or electromagnets
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Biophysics (AREA)
- Physics & Mathematics (AREA)
- Pathology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Radiology & Medical Imaging (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Neurology (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
The invention discloses an anti-interference magnetic therapy detection system, a threshold detection method and an integrated machine, which comprise a stimulation coil, an MEP device, an acquisition device and a control host, wherein the MEP device comprises a shell, a signal synchronization end, a signal transmission end and a signal acquisition end are arranged outside the shell, and a conditioning and amplifying circuit, an analog-to-digital conversion module, a signal synchronization module and a signal transmission module are arranged in the shell; the acquisition device is an electrode wire which is connected with the signal acquisition end, the end part of the electrode wire is provided with an electrode plate, the electrode wire consists of a recording electrode wire, a reference electrode wire and a ground electrode wire, and shielding layers are arranged in the recording electrode wire, the reference electrode wire and the ground electrode wire. Through the improvement to the acquisition device and the MEP device, the power frequency interference from the outside can be reduced, the power frequency interference of the current can be accurately optimized by a system algorithm, and the accurate waveform diagram of the electromyographic signals and the exercise center conduction time are obtained.
Description
Technical Field
The invention belongs to the technical field of medical equipment, and particularly relates to an anti-interference magnetic therapy detection system, a threshold detection method and an integrated machine.
Background
The exercise evoked potential (motor evoked pontential, MEP) is a non-invasive detection means, which was first studied and reported by Barker et al in 1985, and is a new method for objectively detecting cone beam function and peripheral nerve motor conduction function. Mainly comprises high-voltage pulse electric stimulation induction and high-intensity pulse magnetic field stimulation induction. Since magnetic stimulation has magnetic field assistance, current can pass through various organism tissues without resistance, and local pain and discomfort are not caused, and therefore, compared with electric stimulation, the electric stimulation is more widely accepted.
Pulse interference is inevitably generated in the process of high-intensity pulse magnetic field stimulation, and the signal acquisition process of the MEP device is influenced by the pulse interference to distort the acquired signal. The surface of the human body has certain resistance, and the motion evoked potential recorded by the electrode on the surface of the MEP device has certain power frequency interference. The power frequency interference is an interference caused by the power system, and is an interference composed of 50HZ and its harmonics, and the amplitude is about 50% of ECG (electrocardiographic signal). The power frequency interference can be processed by a wave trap to filter 50HZ signals.
At present, MEP devices are easy to collect interfered signals, the existing power frequency interference filtering method is mainly used for filtering by constructing a digital trap, but the collected signals comprise TMS electromagnetic pulses with very large amplitude, if the digital trap is used for filtering power frequency interference, the TMS electromagnetic pulses can bring obvious distortion to a motion evoked potential after filtering, so that an effective waveform cannot be obtained in testing, the efficiency is low, and the measurement value is inaccurate.
Moreover, the simple detection of the exercise evoked potential range can not completely judge the actual condition of the tested person, and the whole condition of the tested person can be better judged only by combining the actual central nervous conduction time. In the conventional MEP device, in the process of measuring the central nervous conduction time of a body, the conduction time of an electromyographic signal in a human body always has errors, and the transmission time in an instrument causes errors in measurement, so that a calculation result is influenced, the conduction time cannot be accurately measured, and the measurement time is generally simply corrected and inaccurate through an internal algorithm of a main control chip. If signal sensors are added to the transmitting end of the stimulating coil and the receiving end of the acquisition device, the cost is additionally increased.
Disclosure of Invention
The invention provides an anti-interference magnetic therapy detection system, a threshold detection method and an integrated machine, which can solve the problems existing in the background technology.
The technical scheme of the invention is realized as follows:
an anti-interference magnetic therapy detection system, comprising:
the control host is used for transmitting the pulse source;
the stimulation coil is connected to one side of the control host and is used for receiving a pulse source emitted by the control host to generate a strong magnetic field and act on a body test area;
the MEP device is connected to the other side of the control host and used for receiving an electromyographic signal generated by the stimulation coil to stimulate a body test area, and comprises a shell, wherein a signal synchronization end, a signal transmission end and a signal acquisition end are arranged outside the shell, a second control main board is arranged in the shell, and a conditioning and amplifying circuit, a common mode offset circuit, an analog-to-digital conversion module, a signal synchronization module and a signal transmission module are arranged on the second control main board;
the acquisition device is an electrode wire, is connected with the MEP device and is used for acquiring electric signals generated by stimulating a body test area through the stimulating coil, an electrode plate is arranged at the end part of the electrode wire, the electrode wire consists of a recording electrode wire, a reference electrode wire and a ground electrode wire, and shielding layers are arranged in the recording electrode wire, the reference electrode wire and the ground electrode wire.
As a further improvement of the invention, the conditioning and amplifying circuit is connected with the acquisition device and is used for amplifying the electromyographic signals acquired by the acquisition device; meanwhile, the middle point of the conditioning amplifying circuit is connected to the shielding layer, so that common mode interference can be filtered; the conditioning amplifying circuit forms a filter to filter and increase the common mode rejection ratio, and the shielding layer, the reference electrode line and the recording electrode line are connected with a high-frequency capacitor to filter high-frequency clutter.
And the common mode cancellation circuit is respectively connected with the conditioning amplification circuit and the earth electrode wire and is used for removing common mode interference of the earth electrode wire, reducing interference signals acquired by the MEP device and increasing MEP measurement accuracy.
The analog-to-digital conversion module is connected with the conditioning amplifying circuit and used for converting the amplified myoelectric signal into a digital signal;
the signal synchronization module is connected to the signal synchronization end and the control host and used for recording host signal sending time and digital signal receiving time;
the signal transmission module is connected with the analog-to-digital conversion module and transmits the digital signal to the all-in-one machine.
The anti-interference magnetic therapy all-in-one machine comprises an anti-interference magnetic therapy detection system, wherein the control host comprises a control main board and a power board, and the control main board comprises a main control chip and is respectively connected with the stimulation coil and the MEP device.
As a further development of the invention, the line lengths of the control motherboard to the stimulation coil and the MEP device respectively are identical. The signal transmission time can be synchronized, and the time precision is improved.
As a further improvement of the invention, a silicon controlled rectifier is arranged between the control main board and the stimulation coil and is used for synchronizing the pulse current output by the high-voltage capacitor.
As a further improvement of the invention, the control host also comprises a cooling fan and a cold water pump which are used for controlling the temperature in the integrated machine.
As a further improvement of the invention, the control host is also internally provided with an EMI filter, and an AC-DC module is arranged between the EMI filter and the control main board.
A threshold detection method of an anti-interference magnetic therapy integrated machine comprises the following steps:
s1, placing a stimulation coil in a body test area of a tester, respectively attaching a recording electrode plate and a reference electrode plate of an electrode plate to thumb flexor of the tester, and attaching a ground electrode plate to the back of a hand;
s2, a control main board sends out a signal, a high-voltage capacitor is controlled to send out pulse current to a stimulation coil, and the pulse current is converted into a strong magnetic field through the stimulation coil; simultaneously, the control main board synchronously sends signals to a signal synchronization module, and the signal synchronization module records the time of receiving the signals;
s3, the acquisition device sends the acquired electromyographic signals to the conditioning and amplifying circuit, the conditioning and amplifying circuit sends the amplified electromyographic signals to the analog-to-digital conversion module, the analog-to-digital conversion module converts the electromyographic signals into digital signals, the digital signals are threshold detection values, the analog-to-digital conversion module sends the digital signals to the signal transmission module and the signal synchronization module, and the signal synchronization module records time again;
s4, the signal transmission module transmits the digital signals to the all-in-one machine, and a main control chip in the all-in-one machine analyzes the signals and optimizes power frequency interference to obtain an accurate electromyographic signal waveform diagram; and correcting the motion center conduction time of the body to obtain the actual motion center conduction time of the body.
As a further improvement of the present invention, in the step S4, the main control chip optimizes the power frequency interference of the digital signal through an FIR low-pass filter. Further increasing the MEP device measurement accuracy.
As a further improvement of the present invention, the step S2 includes the steps of:
s21, during initial measurement, the control main board controls the high-voltage capacitor to give out a safe and high-voltage pulse current so as to determine that a tester can generate an electromyographic signal;
s22, if the MEP device detects the electromyographic signals, the amplitude is larger than 200uv, and the electromyographic signals are invalid values and are not recorded; according to the actual detection value, reducing the high-voltage pulse current until the MEP device detects that the electromyographic signal value is between 50uv and 200uv, and recording;
s23, on the basis of S22, gradually reducing or increasing pulse current to adjust the magnetic field of the stimulation coil, measuring whether a measurement threshold value of the electromyographic signal is in a 50uv-200uv interval, if not, then, the measurement threshold value is an invalid value, and if not, then, the MEP device records the threshold value and the acquisition time;
s24, repeating the step S23 for a plurality of times until the measurement threshold value of 5 times in 10 times of measurement is in the range of 50uv-200uv, and determining the pulse current value range as the optimal evoked potential range of the tester.
The anti-interference magnetic therapy integrated machine and the threshold detection method thereof have the following beneficial effects:
through divide into record electrode line, reference electrode line and earth line with the electrode line, each electrode line inlayer all is provided with the shielding layer moreover, can reduce the power frequency interference from external world, can make the accurate power frequency interference who optimizes electric current itself of system algorithm, obtains accurate electromyographic signal's oscillogram.
The threshold detection method is improved by combining with the MEP device system, the optimal evoked potential range of a tester is rapidly detected, and the detection efficiency is improved.
The special signal synchronization circuit is added between the control host and the MEP device, and the circuit distance between the control host and the stimulation coil is the same, so that the time error can be counteracted, the actual conduction time of the motion path of the tester can be accurately recorded, the data accuracy is further improved, and the body condition of the tested person can be accurately judged according to the conduction time and the evoked potential.
The improvement improves the precision and accuracy of the MEP device on the existing basis. The method is mainly characterized in that the electrode wire processing and shielding function are adopted to enhance the anti-interference characteristic, the accuracy of an algorithm is improved by adopting a high-resolution analog-to-digital converter after the sampling signal is subjected to hardware filtering, the FIR low-pass filter is combined in the filtering aspect, the interference of power frequency and high frequency brought by the outside is reduced, and the measurement accuracy of the MEP device is improved.
Drawings
FIG. 1 is a schematic diagram of the anti-interference magnetic therapy detection system of the present invention;
fig. 2 is a schematic view of the internal structure of the MEP apparatus in fig. 1;
FIG. 3 is a schematic circuit diagram of the conditioning amplifier circuit and the acquisition device of FIG. 2;
fig. 4 is a schematic diagram illustrating the operation of the signal synchronization module of the system signal MEP device in fig. 1;
FIG. 5 is a schematic diagram of a control host structure of the anti-interference detection system of the present invention;
FIG. 6 is a flow chart of a threshold detection method of the anti-interference magnetic therapy detection system of the present invention;
fig. 7 is a schematic diagram of the operation flow of S2 in fig. 6.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Fig. 1 is a schematic diagram of an anti-interference magnetic therapy detection system according to the present invention, referring to fig. 1, the anti-interference magnetic therapy integrated machine according to the present invention includes a stimulating coil, an MEP device, a control host and an integrated machine.
And the control host computer and the integrated machine management system are in RS232 communication, and the control host computer is managed and data are presented through the integrated machine management system. The control host comprises a control main board and a power panel, and the control main board is respectively connected with the stimulating coil and the MEP device. The control main board and the stimulation coil are provided with the power panel, the power panel continuously provides electric energy for the high-voltage capacitor, and the silicon controlled rectifier is arranged between the high-voltage capacitor and the stimulation coil and is used for adjusting pulse current output by the high-voltage capacitor.
The stimulation coil is connected to one side of the control host and connected with a high-voltage capacitor in the integrated machine; the stimulation coil comprises up to 13 functional stimulation coils, 8-shaped stimulation coils, round stimulation coils, 8-shaped thorns for children, pelvic floor stimulation wires, sacral nerve stimulation coils, conical stimulation wires, biconical stimulation wires, scientific research stimulation wires, butterfly stimulation coils, elliptic stimulation coils, special-shaped stimulation coils, 8-shaped pseudo-stimulation wires and round pseudo-stimulation wires.
The MEP device is connected to the other side of the control host and comprises a shell, a signal synchronization end 112, a signal transmission end 110 and a signal acquisition end 111 are arranged outside the shell, a second control main board is arranged in the shell, and a conditioning amplifying circuit, a common mode offset circuit, an analog-to-digital conversion module, a signal synchronization module and a signal transmission module are arranged on the second control main board.
As shown in fig. 2, a signal synchronization end 112, a signal transmission end 110 and a signal acquisition end 111 are arranged outside a shell of the MEP device, a second control main board is arranged in the shell, and a conditioning and amplifying circuit, a common mode cancellation circuit, an analog-to-digital conversion module, a signal synchronization module and a signal transmission module are arranged on the second control main board, wherein the conditioning and amplifying circuit is positioned on the second control main board, is connected with the acquisition device 120 and is used for amplifying myoelectric signals acquired by the acquisition device 120; while the midpoint of the conditioning amplifier circuit is connected to the shield as shown in fig. 3 by impedance matching between the midpoint of the conditioning amplifier circuit and the shield. When the voltage fluctuation generated by the common mode interference passes through the conditioning amplifying circuit, the phase difference between the input end and the output end of the conditioning amplifying circuit can enable the middle ground wire to have a counteracting voltage, so that the influence of the common mode interference on the electromyographic signals is reduced.
The common mode offset circuit is respectively connected with the conditioning amplifying circuit and the earth electrode wire and is used for removing common mode interference of the earth electrode wire, and in the common mode offset circuit, a common mode interference signal output by the conditioning amplifying circuit can be measured and offset with an opposite phase, so that the common mode interference is eliminated, and the MEP measurement accuracy is improved.
The analog-to-digital conversion module is connected with the conditioning amplifying circuit and used for converting the amplified myoelectric signal into a digital signal; the analog-to-digital converter is a delta-sigma 24bit high-precision high-rate sampling chip integrated filter, further enhances the power frequency filtering effect and converts uv analog signals into digital signals.
The signal synchronization module is connected to the signal synchronization end 112 and the control host, and adopts a high-speed low-delay transmission optocoupler to interrupt the singlechip, so that the signal sending time and the digital signal receiving time of the host can be rapidly recorded; and the lengths of the lines from the control main board to the stimulation coil and the MEP device are the same, so that the signal transmission time can be synchronized, and the time precision is improved. The signal synchronization module and the signal synchronization end are newly added on the basis of the prior art, which is beneficial to improving the accuracy and reliability of signal synchronization and enabling the system to be more controllable, thereby realizing effective monitoring and control of signals.
The signal transmission module is connected with the analog-to-digital conversion module and transmits the digital signal to the all-in-one machine through the signal transmission end 110. The signal transmission end 110 is connected with the all-in-one machine through a USB to serial port line. The signal transmission module is communicated with the all-in-one machine for isolation, so that the protection safety of a patient is enhanced, and electromagnetic impact and interference introduced from the outside are cut off.
The acquisition device 120 is an electrode wire, which is connected with the signal acquisition end 111 of the MEP device, the end of the electrode wire is provided with an electrode plate, the electrode wire consists of a recording electrode wire 121, a reference electrode wire 122 and a grounding electrode wire 123, and shielding layers are arranged in the recording electrode wire 121, the reference electrode wire 122 and the grounding electrode wire 123 and are used for acquiring electromyographic signals generated by a body. The acquisition device 120 is provided with a power frequency notch, removes a power frequency electric 50HZ signal generated by human body induction during acquisition, removes low-pass noise, and displays a real electric signal waveform.
The shielding layer can shield external electromagnetic interference introduced by the recording electrode wire, the reference electrode wire and the ground electrode wire, and cut off the propagation path of the noise source. The principle of physical isolation and electromagnetic blocking is used for realizing power frequency notch and eliminating common mode interference. The recording electrode wire, the reference electrode wire and the ground electrode wire are isolated from an external interference source through the covering and packaging of the aluminum foil, so that the influence of interference on signals is effectively reduced, and the accuracy and the reliability of data acquisition are improved. Therefore, providing a shielding layer on the acquisition device has an important role in optimizing the signal quality and stability of the system.
As shown in fig. 5, the control host also includes a cooling fan and a cold water pump for adjusting temperature. The integrated machine management system can monitor the temperature, the flow rate and the like of the equipment in real time. When an abnormality in the device is detected, the current in-process detection is automatically stopped, and the detection (including a single stimulus) cannot be restarted until the device is restored. When the temperature of the host is more than or equal to 71 ℃, alarming and stopping detection, and recovering after the temperature is less than or equal to 50 ℃. The coil temperature is more than or equal to 41 ℃ and the detection is stopped, and the coil can be recovered after the coil temperature is less than or equal to 35 ℃. And when the flow rate of the cold water pump is less than 6pos/s, alarming and stopping detection, and recovering after the flow rate is more than or equal to 6 pos/s.
And an EMI filter is further arranged in the control host, the filter is connected with the power panel and the control main board and is used for eliminating interference noise, rectifying the power supplied by the network power supply into filtered direct current and boosting the direct current into high-voltage power, and an alternating current-direct current module is arranged between the EMI filter and the control main board and ensures that the direct current is formed on the control main board and the power panel.
FIG. 6 is a flow chart of a threshold detection method of the anti-interference magnetic therapy detection system of the invention, comprising the following steps:
s1, placing a stimulation coil in a body test area of a tester, respectively attaching a recording electrode plate and a reference electrode plate of an electrode plate to thumb flexor of the tester, and attaching a ground electrode plate to the back of a hand;
s2, a control main board sends out a signal, a high-voltage capacitor in the control main board sends out pulse current to a stimulation coil, and the pulse current is converted into a strong magnetic field through the stimulation coil; meanwhile, the control main board also synchronously sends signals to a signal synchronization module in the MEP device, and the signal synchronization module records the time of receiving the signals, as shown in fig. 4-5.
S3, the acquisition device 120 sends the acquired electromyographic signals to a conditioning and amplifying circuit, the conditioning and amplifying circuit sends the amplified electromyographic signals to an analog-to-digital conversion module, the analog-to-digital conversion module converts the amplified electromyographic signals into digital signals, the digital signals are threshold detection values, the analog-to-digital conversion module sends the digital signals to a signal transmission module and a signal synchronization module, and the signal synchronization module records time again;
s4, the signal transmission module transmits the digital signals to the all-in-one machine, and a main control chip in the all-in-one machine analyzes the signals and optimizes power frequency interference to obtain an accurate electromyographic signal waveform diagram; and correcting the motion center conduction time of the body to obtain the actual motion center conduction time of the body. The main control chip optimizes the power frequency interference of the digital signal through the FIR low-pass filter. Further increasing the MEP device measurement accuracy.
The electromyographic signals collected by the collection device 120 are transmitted to the signal synchronization module, the influence of the processing time in the MEP device is small, the fluctuation value of the time range is small, the average transmission time can be obtained, the main control chip built in the control main board receives and calculates two time points transmitted by the signal synchronization module, the processing time in the MEP device is corrected, and the final physical exercise center conduction time is obtained. The time correction in the local MEP device is shortened, and the time precision measurement is greatly improved.
Referring to fig. 7, S2 includes the following steps:
s21, during initial measurement, the control main board controls the high-voltage capacitor to give out a safe and high-voltage pulse current so as to determine that a tester can generate an electromyographic signal;
s22, if the MEP device detects the electromyographic signals, the amplitude is larger than 200uv, and the electromyographic signals are invalid values and are not recorded; according to the actual detection value, reducing the high-voltage pulse current until the MEP device detects that the electromyographic signal value is between 50uv and 200uv, and recording;
s23, on the basis of S22, gradually reducing or increasing pulse current to adjust the magnetic field of the stimulation coil, measuring whether a measurement threshold value of the electromyographic signal is in a 50uv-200uv interval, if not, then, the measurement threshold value is an invalid value, and if not, then, the MEP device records the threshold value and the acquisition time;
s24, repeating the step S23 for a plurality of times until the measurement threshold value of 5 times is within the range of 50-200 uv in 10 times of measurement, determining that the pulse current numerical range is the optimal evoked potential range and the acquisition time of the tester, and obtaining the exercise center conduction time of the tester accurately by taking the average value of 5 times of measurement. The exercise center conduction time of the tester can be obtained more accurately by repeating the measurement for a plurality of times and carrying out average value calculation on the measurement results meeting the requirements, and the accuracy is higher.
The working principle of the invention is as follows: the system is powered and rectified into a filtered direct current to be boosted into a high-voltage power supply through a network power supply, the embedded component formed by a main board is controlled by a singlechip, the output intensity, frequency, intermittent time and output time of a power supply board of the host can be programmed and controlled, the high-voltage capacitor rapidly discharges to a stimulation coil, and a magnetic field generated by the current of the stimulation coil passes through skull or other tissues to induce biological current in biological tissues of a stimulation part. The water tank, the cold water pump and the cooling fan form a cooling system, and the coil and the power device are cooled. The control main board can regulate the speed of the cold water pump, and control the brush motor to carry out edge detection on the flow velocity sensor signal, so that analysis on a flow velocity data algorithm is realized. The threshold value can be adjusted under the single-stimulus mode through the external function keys, so that the control of the single stimulus is realized. And the control main board and the integrated machine management system are in RS232 communication, so that the integrated machine management system controls the host. After the control main board synchronously outputs the signal triggering the MEP device, the MEP device is realized to collect the electromyographic signals and transmit the electromyographic signals to the management system of the all-in-one machine.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (9)
1. An anti-interference magnetic therapy detection system, comprising:
the control host is used for transmitting the pulse source;
the stimulation coil is connected to one side of the control host and is used for receiving a pulse source emitted by the control host to generate a strong magnetic field and act on a body test area;
the MEP device is connected to the other side of the control host and used for receiving an electromyographic signal generated by the stimulation coil to stimulate a body test area, and comprises a shell, wherein a signal synchronization end, a signal transmission end and a signal acquisition end are arranged outside the shell, a second control main board is arranged in the shell, and a conditioning and amplifying circuit, a common mode offset circuit, an analog-to-digital conversion module, a signal synchronization module and a signal transmission module are arranged on the second control main board;
the acquisition device is an electrode wire, is connected with the MEP device and is used for acquiring electric signals generated by stimulating a body test area through the stimulating coil, an electrode plate is arranged at the end part of the electrode wire, the electrode wire consists of a recording electrode wire, a reference electrode wire and a ground electrode wire, and shielding layers are arranged in the recording electrode wire, the reference electrode wire and the ground electrode wire.
2. The anti-interference magnetic therapy detection system according to claim 1, wherein the conditioning and amplifying circuit is connected with the acquisition device and is used for amplifying the electromyographic signals acquired by the acquisition device; meanwhile, the middle point of the conditioning amplifying circuit is connected to the shielding layer, so that common mode interference can be filtered;
the common mode cancellation circuit is respectively connected with the conditioning amplifying circuit and the earth electrode wire and is used for removing common mode interference of the earth electrode wire;
the analog-to-digital conversion module is connected with the conditioning amplifying circuit and used for converting the amplified myoelectric signal into a digital signal;
the signal synchronization module is connected to the signal synchronization end and the control host and used for recording host signal sending time and digital signal receiving time;
the signal transmission module is connected with the analog-to-digital conversion module and transmits the digital signal to the all-in-one machine.
3. The anti-interference magnetic therapy all-in-one machine is characterized by comprising the anti-interference magnetic therapy detection system as claimed in claim 1, wherein the control host comprises a control main board and a power panel, and the control main board comprises a main control chip and is respectively connected with the stimulation coil and the MEP device.
4. The anti-jamming magnetic therapy all-in-one machine according to claim 3, wherein the control main board has the same line length to the stimulation coil and the MEP device respectively.
5. The anti-interference magnetic therapy integrated machine according to claim 3, wherein a silicon controlled rectifier is arranged between the control main board and the stimulation coil.
6. The anti-interference magnetic therapy integrated machine according to claim 3, wherein the control host further comprises a cooling fan and a cooling water pump.
7. The anti-interference magnetic therapy integrated machine according to claim 3, wherein an EMI filter is further arranged in the control host, and an ac-dc module is arranged between the EMI filter and the control main board.
8. The method for detecting the threshold value of the anti-interference magnetic therapy integrated machine, which comprises the anti-interference magnetic therapy detection system as claimed in claim 1, and is characterized by comprising the following steps:
s1, placing a stimulation coil in a body test area of a tester, respectively attaching a recording electrode plate and a reference electrode plate of an electrode plate to thumb flexor of the tester, and attaching a ground electrode plate to the back of a hand;
s2, a control main board sends out a signal, a high-voltage capacitor is controlled to send out pulse current to a stimulation coil, and the pulse current is converted into a strong magnetic field through the stimulation coil; simultaneously, the control main board synchronously sends signals to a signal synchronization module, and the signal synchronization module records the time of receiving the signals;
s3, the acquisition device sends the acquired electromyographic signals to the conditioning and amplifying circuit, the conditioning and amplifying circuit sends the amplified electromyographic signals to the analog-to-digital conversion module, the analog-to-digital conversion module converts the electromyographic signals into digital signals, the digital signals are threshold detection values, the analog-to-digital conversion module sends the digital signals to the signal transmission module and the signal synchronization module, and the signal synchronization module records time again;
s4, the signal transmission module transmits the digital signals to the all-in-one machine, and a main control chip in the all-in-one machine analyzes the signals, so that power frequency interference is optimized, and an accurate electromyographic signal waveform diagram is obtained; and correcting the motion center conduction time of the body to obtain the actual motion center conduction time of the body.
9. The method for detecting a threshold value of an anti-interference magnetic therapy integrated machine according to claim 8, wherein S2 comprises the steps of:
s21, during initial measurement, the control main board controls the high-voltage capacitor to give out a safe and high-voltage pulse current so as to determine that a tester can generate an electromyographic signal;
s22, if the MEP device detects the electromyographic signals, the amplitude is larger than 200uv, and the electromyographic signals are invalid values and are not recorded; according to the actual detection value, reducing the high-voltage pulse current until the MEP device detects that the electromyographic signal value is between 50uv and 200uv, and recording;
s23, on the basis of S22, gradually reducing or increasing pulse current to adjust the magnetic field of the stimulation coil, measuring whether a measurement threshold value of the electromyographic signal is in a 50uv-200uv interval, if not, then, the measurement threshold value is an invalid value, and if not, then, the MEP device records the threshold value and the acquisition time;
s24, repeating the step S23 for a plurality of times until the measurement threshold value of 5 times in 10 times of measurement is in the range of 50uv-200uv, and determining the pulse current value range as the optimal evoked potential range of the tester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310404783.9A CN116139409B (en) | 2023-04-17 | 2023-04-17 | Anti-interference magnetic therapy detection system, threshold detection method and all-in-one machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310404783.9A CN116139409B (en) | 2023-04-17 | 2023-04-17 | Anti-interference magnetic therapy detection system, threshold detection method and all-in-one machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116139409A true CN116139409A (en) | 2023-05-23 |
| CN116139409B CN116139409B (en) | 2023-07-21 |
Family
ID=86362099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310404783.9A Active CN116139409B (en) | 2023-04-17 | 2023-04-17 | Anti-interference magnetic therapy detection system, threshold detection method and all-in-one machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116139409B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201211186Y (en) * | 2008-07-04 | 2009-03-25 | 中国人民解放军第三军医大学野战外科研究所 | Anti-interference bioelectric signal recording electrode |
| CN105125211A (en) * | 2015-09-28 | 2015-12-09 | 李继有 | Myoelectricity collection and display device |
| WO2016135600A1 (en) * | 2015-02-26 | 2016-09-01 | Rb Patents Sarl | Device for functional electrical stimulation and measurement of electromyogram, comprising means for short-circuiting and earthing a pair of electrodes, and associated transcutaneous electrode |
| CN106999088A (en) * | 2014-10-16 | 2017-08-01 | 梅恩斯塔伊医疗公司 | System and method for monitoring muscular recuperation |
| WO2018144297A1 (en) * | 2017-02-01 | 2018-08-09 | Avent, Inc. | Emg guidance for probe placement, nearby tissue preservation, and lesion confirmation |
| CN108888266A (en) * | 2018-05-28 | 2018-11-27 | 中国医学科学院生物医学工程研究所 | Reduce the power frequency filtering method that TMS electromagnetic pulse influences rat motor Evoked ptential |
| CN208511024U (en) * | 2017-08-29 | 2019-02-19 | 南京伟思医疗科技股份有限公司 | A kind of magnetic induction triggering myoelectricity collector suitable for transcranial magnetic stimulation instrument |
| CN112827066A (en) * | 2021-02-23 | 2021-05-25 | 江西脑调控技术发展有限公司 | Multifunctional transcranial stimulation magnetic therapy device |
| CN216455042U (en) * | 2022-04-11 | 2022-05-10 | 江西朴拙医疗设备有限公司 | Portable magnetic stimulation motion evoked potential acquisition system |
| CN114917479A (en) * | 2022-06-30 | 2022-08-19 | 深圳英智科技有限公司 | Transcranial magnetic pulse interference filtering method and system and electronic equipment |
-
2023
- 2023-04-17 CN CN202310404783.9A patent/CN116139409B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201211186Y (en) * | 2008-07-04 | 2009-03-25 | 中国人民解放军第三军医大学野战外科研究所 | Anti-interference bioelectric signal recording electrode |
| CN106999088A (en) * | 2014-10-16 | 2017-08-01 | 梅恩斯塔伊医疗公司 | System and method for monitoring muscular recuperation |
| WO2016135600A1 (en) * | 2015-02-26 | 2016-09-01 | Rb Patents Sarl | Device for functional electrical stimulation and measurement of electromyogram, comprising means for short-circuiting and earthing a pair of electrodes, and associated transcutaneous electrode |
| CN105125211A (en) * | 2015-09-28 | 2015-12-09 | 李继有 | Myoelectricity collection and display device |
| WO2018144297A1 (en) * | 2017-02-01 | 2018-08-09 | Avent, Inc. | Emg guidance for probe placement, nearby tissue preservation, and lesion confirmation |
| CN208511024U (en) * | 2017-08-29 | 2019-02-19 | 南京伟思医疗科技股份有限公司 | A kind of magnetic induction triggering myoelectricity collector suitable for transcranial magnetic stimulation instrument |
| CN108888266A (en) * | 2018-05-28 | 2018-11-27 | 中国医学科学院生物医学工程研究所 | Reduce the power frequency filtering method that TMS electromagnetic pulse influences rat motor Evoked ptential |
| CN112827066A (en) * | 2021-02-23 | 2021-05-25 | 江西脑调控技术发展有限公司 | Multifunctional transcranial stimulation magnetic therapy device |
| CN216455042U (en) * | 2022-04-11 | 2022-05-10 | 江西朴拙医疗设备有限公司 | Portable magnetic stimulation motion evoked potential acquisition system |
| CN114917479A (en) * | 2022-06-30 | 2022-08-19 | 深圳英智科技有限公司 | Transcranial magnetic pulse interference filtering method and system and electronic equipment |
Non-Patent Citations (3)
| Title |
|---|
| JIDING DUAN等: "Shared control of a brain-actuated intelligent wheelchair", 《PROCEEDING OF THE 11TH WORLD CONGRESS ON INTELLIGENT CONTROL AND AUTOMATION》, pages 341 - 346 * |
| 周世阳: "基于频率子集的相干快速跳频系统抗干扰技术研究", 《中国优秀硕士学位论文全文数据库信息科技辑》, pages 136 - 445 * |
| 顾绍玲等: "基于表面肌电信号的磨牙信号监测系统设计", 《医疗卫生装备》, vol. 38, no. 01, pages 10 - 14 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116139409B (en) | 2023-07-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1432349B1 (en) | Apparatus for monitoring fetal heart-beat | |
| CN208511024U (en) | A kind of magnetic induction triggering myoelectricity collector suitable for transcranial magnetic stimulation instrument | |
| CN103300853B (en) | Diagnosis and treatment system based on surface myoelectricity | |
| CN109091141A (en) | A kind of sleep quality monitor and its monitoring method based on brain electricity and eye electricity | |
| CN101985058A (en) | Multi-functional transcranial magnetic stimulator | |
| US8170655B2 (en) | Module and device for discerning therapeutic signals from noise in physiological data | |
| KR20040044986A (en) | System utilizing noninvasive biofeedback signals | |
| CN101822540A (en) | Myoelectricity amplifier and method for sampling myoelectricity signals | |
| CN109009103A (en) | The detection of the biofeedback type disturbance of consciousness and wake-up system | |
| CN115137980B (en) | Percutaneous nerve electrical stimulation device synchronized with gastrointestinal electricity and method thereof | |
| CN113398470A (en) | Nerve regulation and control system capable of enhancing sleep | |
| CN107233094A (en) | A kind of electromyogram evoked potentuial measuring system | |
| CN111939068A (en) | Myoelectricity feedback intelligent acupuncture physiotherapy instrument | |
| CN116139409B (en) | Anti-interference magnetic therapy detection system, threshold detection method and all-in-one machine | |
| CN209107350U (en) | The detection of the biofeedback type disturbance of consciousness and wake-up system | |
| CN201847678U (en) | Waist belt type wireless heart rate detection device | |
| CN103893915A (en) | Biological self-feedback sleep monitoring magnetic therapy apparatus | |
| CN103340639A (en) | Bioelectrical impedance based urge incontinence recognition method | |
| US20220184396A1 (en) | Rapid neural response telemetry circuit and system of cochlear implant | |
| CN111013015A (en) | Self-feedback physiotherapy instrument | |
| CN104799858B (en) | Electrocardio for magnetic resonance system breathes periphery door control system | |
| CN112755395B (en) | True and false pulse magnetic stimulation therapeutic instrument | |
| CN108904975A (en) | A kind of electrical transcranial stimulation middle impedance detection system | |
| CN214343970U (en) | Spinal cord injury repair device based on photoelectric nerve regulation and control technology | |
| CN110090013B (en) | Electrocardiosignal acquisition method and acquisition circuit based on navel reference electrode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |