CN202289229U - Electrical stimulator for anal muscles - Google Patents

Abstract

The utility model relates to an electrical stimulator for anal muscles. The electrical stimulator for the anal muscles comprises two parts, namely a host and two probes. The probes are connected with the host through a wire respectively. The host comprises a power circuit, a pulse waveform generation and pulse width modulation circuit, and a pulse output amplitude modulation and isolation circuit. The power circuit supplies power to the host. The pulse output amplitude modulation and isolation circuit consists of a pulse transformer and variable resistors, wherein a primary coil of the pulse transformer is connected with the pulse waveform generation and pulse width modulation circuit, and an induction coil of the pulse transformer is connected in series with the variable resistors. The two probes are connected with one end of the induction coil of the pulse transformer and the regulation ends of the variable resistors respectively. The electrical stimulator for the anal muscles is convenient and easy; a convenient apparatus is provided for the electrical stimulation of muscles in anoplasty; and the safety and reliability of the electrical stimulation of the muscles in an operation process are ensured.

Description

A kind of anus muscle electric stimulation instrument

Technical field

This utility model relates to medical instruments field, is specifically related to a kind of anus muscle electric stimulation instrument, comprises main frame and probe two parts; Probe links to each other with main frame through lead; Main frame comprises power circuit, and impulse waveform takes place and pulse width modulation circuit, pulse output amplitude modulation and buffer circuit.

Background technology

The neonate congenital anal atresia is the common congenital diseases of pediatric surgery, and is lopsided for the digestion due to embryo's hindgut in period dysplasia, accounts for the congenital malformation of the alimentary tract first place.Congenital anal atresia is disposed good and bad, not only is related to infant and whether survives, and influence the quality of life in the infant developmental process.The congenital anal atresia infant needs operative treatment, and one of them is to carry out the anus plastic operation, through the electricity irritation to perineum part skin, observes the contraction of external sphincter, to judge the centre of external anal sphincter; To the pelvic diaphragm muscle electricity irritation, keep correct dissection pathway in the operation process, improve the postoperative curative effect.

One Chinese patent application numbers 200720151301 discloses myoelectricity stimulator at the bottom of a kind of basin.One Chinese patent application numbers 200410048090 discloses the special-purpose rod of electricity irritation.One Chinese patent application numbers 200780021028.1, disclose to muscle carry out electricity irritation in case the incontinence of treatment feces with or the method and the apparatus of pelvic prolapse.One Chinese patent application number 00129246.3 discloses muscle training apparatus and method for using thereof based on electricity irritation.But, do not appear in the newspapers about a kind of anus muscle electric stimulation instrument that is applied to anoplasty.

The utility model content

The purpose of this utility model is, provides a kind of convenience in the anus plastic operation, to use, and other of electric-impulse stimulation output signal and instrument are partially isolated, the safe and reliable instrument of assurance operation process muscle electric stimulation.

For realizing above-mentioned purpose; The technical scheme that this utility model is taked is: a kind of anus muscle electric stimulation instrument, comprise main frame and probe two parts, and probe links to each other with main frame through lead; Main frame comprises power circuit; Impulse waveform takes place and pulse width modulation circuit, and pulse output amplitude modulation and buffer circuit, power circuit are the main frame power supply; Pulse output amplitude modulation and buffer circuit are made up of pulse transformer and variable resistance; The primary coil of pulse transformer connects impulse waveform and takes place and pulse width modulation circuit; The induction coil of pulse transformer and variable resistance serial connection; Probe is two, links to each other with an end and the said variable-resistance adjustable side of pulse transformer induction coil respectively.

This utility model has following beneficial effect: simple and easy to do, for muscle electric stimulation in the anus plastic operation provides instrument tool easily; Because the isolation of pulse transformer is arranged, other parts of electric-impulse stimulation output signal and instrument are isolated, in operation, use to be difficult for injuring the patient, guarantee that muscle electric stimulation is safe and reliable in the operation process.

One of preferred version of this utility model: a kind of impulse waveform of anus muscle electric stimulation instrument takes place and pulse width modulation circuit is made up of NE555 multi-resonant oscillating circuit that works in no steady state and the NE555 pulse enable monostable circuit that works in monostability; The NE555 multi-resonant oscillating circuit produces the fixed cycle pulse, and the back gets into NE555 pulse enable monostable circuit and carries out the pulsewidth adjustment.The beneficial effect of doing like this is that electronic circuit is simple and reliable, and is easy to adjust, is convenient to operative site and uses.

Two of the preferred version of this utility model: a kind of main frame of anus muscle electric stimulation instrument comprises microprocessor, display circuit, and key circuit, microprocessor comprises analog-to-digital conversion module, and display circuit, key circuit links to each other; Impulse waveform takes place and pulse width modulation circuit is a pulse width modulation circuit, and it links to each other with microprocessor or is included in the microprocessor, is carried or is produced with the enumerator simulation by microprocessor.The beneficial effect of doing like this is can the paired pulses frequency, pulsewidth, and parameters such as pulse amplitude show, quantitative work improves operative site muscle electric stimulation effect.

Description of drawings

Fig. 1 is said a kind of anus muscle electric stimulation instrument embodiment 1 schematic diagram.

Fig. 2 is said a kind of anus muscle electric stimulation instrument embodiment 2 principle schematic.

The specific embodiment

Below in conjunction with embodiment and with reference to accompanying drawing this utility model is further described.

Embodiment 1

Referring to accompanying drawing 1 said a kind of anus muscle electric stimulation instrument embodiment 1 schematic diagram.

Wherein preferred resistance value is: R1:1K Ω; R2:1K Ω; R3:20K Ω; R4:1K Ω; R5:100 Ω; R6:20 Ω.

Wherein preferred variable resistance is: W1:10M Ω; W2:200K Ω; W3:22K Ω.

Wherein preferred capacitance is: C1:220nF; C2:0.01 μ F; C3:1500pF; C4:0.33 μ F; C5:0.01 μ F.

Integrated circuit model: IC1, IC2:NE555.The primary coil of pulse transformer and induction coil quantity are than being 1:10.

IC1 and peripheral circuit constitute the pulse oscillation circuit of EDM Generator of Adjustable Duty Ratio, W1 scalable output pulse duty factor; IC2 and peripheral circuit constitute the pulse enable monostable circuit of pulsewidth adjustment, W2 adjustment output pulse pulsewidth; W3 is connected in the induction coil loop of pulse transformer, the adjustment output pulse amplitude.

Power supply adopts the 9V battery powered; The primary coil of pulse transformer connects the colelctor electrode of VD3 behind the pulse output end of No. 3 feet of IC2, the induction coil of pulse transformer and variable resistance W3 serial connection, and probe is two, links to each other with an end of pulse transformer induction coil and the adjustable side of W3 respectively; Probe also comprises adsorbent except that comprising electrode, for example inside has the medical bale of cotton of aluminium oxide (or active carbon) to live probe, is used for adsorbing foul smell infiltration and oozing of blood in the operation process, is disposable.

Add that at the two ends of probe the pulse oscillation circuit of the EDM Generator of Adjustable Duty Ratio that the IC1 of first constitutes after powering on produces 1 hertz of one-period, hundreds of microsecond pulse by the simulation human body load of 51K Ω and 220nF parallel connection; The pulse enable monostable circuit output frequency of the pulsewidth adjustment that the IC2 of second portion constitutes is identical with first, pulse width can hundreds of delicate to 80 millis wonderful between the square wave of adjusting; The pulse transformer output amplitude of passing through 1:10 at last is from 0 to more than 100 volts impulse stimulation ripples that adjustable positive and negative hundreds of is delicate.

Frequency	1Hz	1Hz	1Hz	0.1Hz	10Hz
						Pulsewidth	40ms	80ms	100μs	40ms	40ms
The muscle contraction effect	Obviously	Obviously	Obviously	Too slow, not obvious	Too fast, not obvious

Table in the reference, further clinical experiment is found, IC1 is 1 hertz with the pulse period that IC2 produces, pulse width during less than 80 milliseconds anus muscle electric stimulation muscle contraction effect the most obvious, be prone to observation, make things convenient for the clinician to operate; Pulsewidth during greater than 80ms the pulse energy excessive, the patient has uncomfortable sensation, does not advise clinical use.

Embodiment 2

Referring to accompanying drawing 2 said a kind of anus muscle electric stimulation instrument embodiment 2 principle schematic.

Present embodiment is to be the anus muscle electric stimulation technical device scheme of core with the microprocessor; Can adopt the C8051F020/1/2/3 microprocessor; This is fully-integrated mixed-signal system level MCU chip, has 64 digital I/O pins (C8051F020/2) or 32 digital I/O pins (C8051F021/3).Listed some key properties below: at a high speed, 8051 compatible CIP-51 kernels (can reach 25MIPS) of pipeline organization at full speed, non-intrusion type at system debug interface (in the sheet); The 8 passage ADC of real 12 (C8051F020/1) or 10 (C8051F022/3), 100 ksps, band PGA and analog multichannel switch; The ADC of real 8 500 ksps, band PGA and 8 tunnels analogy variable connectors; Two 12 DAC have the programmable data update mode; But the FLASH memorizer of 64K byte in-system programming; The ram in slice of 4352 (4096+256) byte; The spatial external data memory interface of addressable 64K byte address; Hard-wired SPI, SMBus/ I2C and two UART serial line interfaces; 5 16 general bit timing devices; Programmable counter/intervalometer array with 5 seizure/comparison modules; WatchDog Timer, VDD monitor and temperature sensor in the sheet; C8051F020/1/2/3 with VDD monitor, WatchDog Timer and clock oscillator in the sheet is the SOC(system on a chip) that really can work alone.External LED of present embodiment microprocessor or LCD display circuit and matrix keyboard are convenient to be shown and operation; The analog to digital conversion circuit that microprocessor carries can detect the amplitude of pulse, and the enumerator that microprocessor carries can the analog pulse width modulation circuit, and its pulse frequency and pulse width may be displayed on LED or the LCD display circuit.Present embodiment other technologies details is identical with embodiment 1.

The above only is the preferred implementation of this utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from this utility model principle; Some improvement be can also make and these improvement and the additional protection domain that also should be regarded as this utility model replenished.

Claims (5)

1. an anus muscle electric stimulation instrument comprises main frame and probe two parts, and probe links to each other with main frame through lead; Main frame comprises power circuit, and impulse waveform takes place and pulse width modulation circuit, pulse output amplitude modulation and buffer circuit; Power circuit is the main frame power supply; It is characterized in that: said pulse output amplitude modulation and buffer circuit are made up of pulse transformer and variable resistance, and the primary coil of said pulse transformer connects impulse waveform and takes place and pulse width modulation circuit, the induction coil of pulse transformer and variable resistance serial connection; Said probe is two, links to each other with an end and the said variable-resistance adjustable side of pulse transformer induction coil respectively.

2. a kind of anus muscle electric stimulation instrument according to claim 1; It is characterized in that: said impulse waveform takes place and pulse width modulation circuit is made up of NE555 multi-resonant oscillating circuit that works in no steady state and the NE555 pulse enable monostable circuit that works in monostability; The NE555 multi-resonant oscillating circuit produces the fixed cycle pulse, and the back gets into NE555 pulse enable monostable circuit and carries out the pulsewidth adjustment.

3. according to claim 1, described a kind of anus muscle electric stimulation instrument, it is characterized in that: said main frame also comprises microprocessor, display circuit, key circuit, said microprocessor comprises analog-to-digital conversion module, and display circuit, key circuit links to each other; Said impulse waveform takes place and pulse width modulation circuit is a pulse width modulation circuit, and it links to each other with microprocessor or is included in the microprocessor, is carried or is produced with the enumerator simulation by microprocessor.

4. a kind of anus muscle electric stimulation instrument according to claim 1, it is characterized in that: said power circuit is a battery.

5. a kind of anus muscle electric stimulation instrument according to claim 1, it is characterized in that: said probe also comprises adsorbent except that comprising electrode.

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