CN100376205C - Portable anorectal muscle function biofeedback instrument - Google Patents

Abstract

Translated fromChinese

一种便携式肛直肠肌功能生物反馈仪，属生物反馈治疗仪。包括采集肛直肠肌信号和腹肌信号的电极、缓冲放大器、主放大器及滤波电路、RMS计算电路、A/D转换器、液晶显示器、微处理器及电源。利用本反馈仪结合专用软件系统，可方便、安全地采集到人体肛门括约肌和腹肌的即时状态信号，并将训练时产生的肌电虚拟波形实时地显示在液晶显示器上，该生物反馈仪具有体积小，重量轻，携带方便，便于便秘患者在家庭等住所进行自我检测和自我训练，有利于便秘患者在家庭中经常性地进行自我治疗等优点。

The utility model relates to a portable anorectal muscle function biofeedback instrument, which belongs to a biofeedback therapeutic instrument. It includes electrodes for collecting anorectal muscle signals and abdominal muscle signals, a buffer amplifier, a main amplifier and a filter circuit, an RMS calculation circuit, an A/D converter, a liquid crystal display, a microprocessor and a power supply. Using this feedback instrument combined with a special software system, it is convenient and safe to collect the real-time state signals of the human anal sphincter and abdominal muscles, and display the myoelectric virtual waveform generated during training on the LCD in real time. This biofeedback instrument has Small in size, light in weight, easy to carry, convenient for constipation patients to perform self-test and self-training at home and other residences, and conducive to frequent self-treatment of constipation patients at home.

Description

Portable anus rectum muscle function biofeed back instrument

One, technical field:

The present invention relates to Medical Instruments, especially relate to a kind of portable anus rectum muscle function biofeed back instrument for the treatment of constipation.

Two, background technology:

1985, some separately independently research drawn same conclusion basically: the constipation 50% or more is actually owing to muscle can not co-operating causes; But shrinking their anal sphincter during patient's defecation.This disease is defined as " Anismus anismus ".It is to be easy to obtain notable therapeutic effect by EMG myoelectricity biofeedback training.

Biofeedback therapy is a kind of emerging biological behavior therapy method, its principle is to utilize biofeedback mechanism, adopt Special Equipment, gathering self physiological activity information is handled, is amplified, vision or the audible signal be familiar with people show, allow the patient adjust physiological activity, thereby reach the purpose that alleviates or eliminates the abnormal physiology variation according to its observed self physiological activity information.Compare with traditional treatment, biofeedback therapy has relative Noninvasive, easily stands, medical expense is low, out-patient treatment, no drug side effect and drug resistance etc. a bit.Biofeedback Training for Constipation, the new direction of having opened up constipation therapy has undoubtedly been enriched the means of constipation therapy.

Present this biofeed back instrument, volume is big, and complex structure only is suitable for hospital and uses.

Three, summary of the invention:

The invention provides a kind of collection human body anus rectum muscle and abdominal muscle two place's myoelectricities, and convert it to virtual waveform and be shown in LCDs (LCD), carry out biofeedback by vision, and simple in structure, volume is little.Small-sized the making of being convenient to domestic. applications taken the formula anus rectum muscle function biofeed back instrument.

Realize the portable anus rectum muscle function biofeed back instrument of above-mentioned purpose, as shown in Figure 1: the electrode that can gather anus rectum muscle signal and abdominal muscle signal simultaneously is connected in buffer amplifier, the output of buffer amplifier is connected in main amplifier and filter circuit, the outfan of main amplifier and filter circuit is connected in root-mean-square (RMS) counting circuit, this counting circuit adopts the MX636 chip, root-mean-square (RMS) counting circuit outfan is connected in the A/D converter input, the demonstration of microprocessor control A/D conversion and liquid crystal display, power supply is connected in buffer amplifier respectively, main amplifier and filter circuit, root-mean-square (RMS) counting circuit, A/D converter, liquid crystal display and microprocessor, power supply are powered respectively to above-mentioned each parts.

The roughly process that realizes is as follows: behind the anus myoelectricity utmost point and the collection of abdominal muscle electrode of electromyographic signal by special use, amplify through buffer amplifier, signal sends main amplifier and filter circuit to then, further amplifies also filtering noise interference.Signal after the amplification is sent to the A/D converter sampling through the root mean square calculation circuit, and the data show after the conversion is in liquid crystal display.

Characteristics of the present invention: this feedback apparatus device is small and light, easy to carry, dry cell power supply, safe and reliable.Be convenient to the patient and carry out autotraining, help reduction of patient, be convenient to the regular Heal Thyself of constipation patient simultaneously, exempted other unnecessary expenses such as going hospitalize because of the shy nervous anxiety that produces in residences such as families.

Four, description of drawings:

Fig. 1 portable anus rectum muscle function biofeed back instrument composition frame chart.

The circuit theory diagrams of Fig. 2 biofeed back instrument.Designation among the figure: U₇Be virtual value transducer, U₈Be the boost DC-DC converter of default+5V, U₉Be A/D converter, U₁₀Be SRAM memorizer, U₁₄Be latch, U₁₅Be 51 single-chip microcomputers, U₁₆Be+5V DC-DC transducer to ± 12V.

Fig. 3 LCD display waveform figure,

Fig. 4 software The general frame.

Fig. 5 software overview flow chart.

Five, the specific embodiment

Fig. 1 is the composition frame chart of portable anus rectum muscle function biofeed back instrument, promptly in the anus rectum muscle signal of telecommunication that electromyographic electrode and the collection of abdominal muscle electrode obtain and abdominal muscle signal through buffer amplifier is pre-amplify after, sending into main amplifier further amplifies, and disturb through the filter circuit filtering noise, the RMS counting circuit is sent into the A/D change-over circuit again and is carried out analog digital conversion, demonstrates the corresponding virtual waveform of myoelectricity by input LCDs after the microprocessor processes.

Fig. 2 is the circuit theory diagrams of biofeed back instrument, this figure is the circuit theory diagrams of a passage, the buffer amplifier that links to each other with the electrode of gathering anus rectum muscle signal and abdominal muscle signal among the figure, the signal that collects is amplified in advance after main amplifier further amplifies, after filter circuit filtering, send into the RMS counting circuit again, the chip U of this RMS counting circuit₇Adopt the MX636 chip, the output of RMS counting circuit is through A/D converter U₉Link to each other with liquid crystal display, A/D converter is to adopt ADC0809 chip, liquid crystal display U_13A, U_13BAdopt two 74LS74 chips to be composed in series, respectively with A/D converter U₉The microprocessor that links to each other with liquid crystal display is by chip U₁₀U1₁₁U₁₅Interconnect composition, chip U₁₀Adopt 6264 chips, chip U₁₄Adopt the 74LS373 chip, chip U₁₅Adopt the 89C52 chip, microprocessor U wherein₁₅The 89C52 chip is by socket JP2 control liquid crystal display.Power supply is by digital power U₈With analog power U₁₆Form digital power U₈Chip adopt MAX608 chip, analog power U₁₆Chip adopt DY05D12-2W.

Fig. 3 is the waveform sketch map that liquid crystal display shows.The last figure of this figure is the myoelectric waveform of anal sphincter, and figure below is the myoelectric waveform of abdominal muscle.

Fig. 4 is the software The general frame, and this software The general frame comprises A/D controlling of sampling module, data read module, timer module and liquid crystal display display module.

Fig. 5 is a software overview flow chart of the present invention.At first distinguish gating two paths of signals passage image data, compare the size of two channel signals and previous state amplitude then respectively, thus the virtual waveform that the signal that draws on liquid crystal display is once sampled.This process that circulates can show the virtual waveform of myoelectricity in real time on liquid crystal display.

Claims (1)

1. portable anus rectum muscle function biofeed back instrument, it is characterized in that, the electrode that can gather anus rectum muscle signal and abdominal muscle signal simultaneously is connected in buffer amplifier, the outfan of buffer amplifier is connected in main amplifier and filter circuit, main amplifier and filter circuit outfan are connected in the root mean square calculation circuit, this counting circuit adopts the MX636 chip, the root mean square calculation circuit output end is connected in the A/D converter input, the conversion of microprocessor control A/D and the demonstration of liquid crystal display, power supply is connected in buffer amplifier respectively, main amplifier and filter circuit, the root mean square calculation circuit, A/D converter, liquid crystal display and microprocessor.

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