CN2759503Y

CN2759503Y - Frequency conversion portable in vitro diaphragm artificial pace maker

Info

Publication number: CN2759503Y
Application number: CN 200420105510
Authority: CN
Inventors: 刘刚; 孙力军; 张雎阳; 杨和平; 季万涛; 蒲晓允; 李香彭; 李军梅
Original assignee: First Affiliated Hospital of TMMU
Current assignee: Third Military Medical University TMMU; First Affiliated Hospital of TMMU
Priority date: 2004-12-07
Filing date: 2004-12-07
Publication date: 2006-02-22
Anticipated expiration: 2014-12-07

Abstract

The utility model relates to a frequency conversion portable in vitro diaphragm artificial pace maker which is composed of an outer shell, a control and output circuit, a liquid crystal display, a film key and an output electrode, wherein the control and output circuit comprises a host machine and a pulse output circuit, and the host machine circuit uses a single chip machine U1 as a control kernel; an oscillating circuit is composed of capacitors C1 and C2, and a crystal Y1, and a power-on resetting circuit is composed of R4 and C3. The running parameter is stored by an EEPROM circuit, and the single chip machine is connected with a connector J1 to set the running parameter while the single chip machine is connected with a connector J2 for connecting the liquid crystal display to show the running parameter. The single chip machine is connected with a two-way pulse output circuit, a needed pulse signal is generated by a timer in the single chip machine, and the pulse signal is input to the pulse output circuit for controlling the intensity of the output pulse. The utility model has the advantages that two kinds of stimulus modalities with frequencies of 40HZ and 2.5HZ +40HZ can be provided to effectively treat the COPD respiratory muscle for rehabilitation in an assistant mode. The pacing frequency and the pacing intensity are controlled by the single chip machine, so the intellectualized level is improved. The utility model has the advantages of small volume and convenient use.

Description

The portable external diaphragm pacemaker of frequency conversion

Technical field

This utility model relates to a kind of treatment chronic obstructive pulmonary disease (COPD) instrument, specifically is the portable external diaphragm pacemaker of a kind of frequency conversion.

Background technology

Chronic obstructive pulmonary disease (COPD) is respiratory system commonly encountered diseases, frequently-occurring disease, is one of gerontal patient's main causes of death.Respiratory muscle training can improve patient respiratory difficulty and respiratory muscle fatigue, improves mobility and quality of life.External diaphragm pacing (EDP) is a comparatively effective and efficient manner of a kind of respiratory muscle training.

The 40Hz frequency is adopted in existing clinical EDP treatment, and it is comparatively sure to rehabilitation effect light, moderate COPD respiratory muscle.Yet, find that in recent years COPD shows as the atrophy of diaphram I, II fiber type when light, moderate, severe is that I fiber type ratio increases, and shows as oxidative metabolism on the function and strengthens, anti-fatigue ability increases; Contraction intensity reduces, and stress ability reduces.Therefore, 40Hz is not the optimum frequency of EDP treatment COPD.

It is reported that persistence 2.5Hz electricity irritation causes that skeletal muscle IIB fiber type transforms to the IIA fiber type, and with the synthetic change of corresponding M HC hypotype.Infer according to electricity irritation skeletal muscle adaptations rule, may cause diaphram and the same variation of skeletal muscle with the upper type electricity irritation.Therefore the phrenic nerves that adopts the EDP of said frequencies to stimulate COPD patient just can reach and both strengthened the diaphram contraction intensity, increases the purpose of diaphram endurance again, thereby improves COPD patient's respiratory muscle function.Therefore, the intrasonic electricity irritation is a kind of COPD of control diaphragmatic fatigue, improves new, the comparatively ideal Therapeutic Method of diaphragmatic function.

Existing EDP therapeutic instrument does not possess above-mentioned functions, so its rehabilitation to the COPD respiratory muscle can not obtain comparatively ideal effect.In addition, existing EDP pacemaker all is to adopt discrete circuit, and the adjusting of its intensity and time is to adopt knob to realize, does not also have stimulus parameter to show.

Summary of the invention

The purpose of this utility model is at the prior art above shortcomings, developed the portable external diaphragm pacemaker of a kind of frequency conversion, provide 40Hz frequency and 2.5Hz+40Hz frequency two kinds of stimulus modelities, so that more effectively the COPD respiratory muscle is carried out the rehabilitation auxiliary treatment; Pacing frequency and intensity are improved intelligent degree, reduce volume, are conveniently used by Single-chip Controlling.

The technical solution of the utility model is as follows:

The portable external diaphragm pacemaker of this frequency conversion is made up of shell, the output electrode that is arranged at control and the output circuit in the shell, the liquid crystal display that is arranged at case surface, film key and grafting.Described control and output circuit comprise host circuit and impulse output circuit two parts:

Wherein, host circuit serves as the control core with single-chip microcomputer U1, constitutes oscillating circuit by capacitor C 1, C2 and crystal Y1, is connected with X1, the X2 of single-chip microcomputer respectively by the printed board line, for single-chip microcomputer provides clock; Constitute electrify restoration circuit by R4, C3, link to each other with the RESET input of single-chip microcomputer U1; Other has eeprom circuit U2, and it is connected with 10,11 feet of U1 by 6,5 bipods; The P10-P17 mouth of single-chip microcomputer U1 links to each other with impulse output circuit A, and the P20-P27 mouth links to each other with impulse output circuit B, and impulse output circuit A and impulse output circuit B be corresponding left and right sides output electrode respectively; The P03 of single-chip microcomputer U1 and P04 mouth are the output pulse PULSE1 and the PULSE2 of left and right sides electrode; The P00-P02 mouth of single-chip microcomputer U1 is connected with connector J1, and J1 connects button again; Single-chip microcomputer U1 connects connector J2 respectively by RD, WR and T1 mouth, and J2 connects liquid crystal display.

The pulse output signals of the PULSE termination single-chip microcomputer U1 of described impulse output circuit constitutes amplifying circuit by audion Q1, Q2, Q3, connects 2 feet of pulse transformer T1 then, and 5,6 feet of T1 connect connector J3, the output high-voltage pulse; The input port IN1-IN8 of pulse driver U3 connects the P10-P17 mouth (another road impulse output circuit connects the P20-P27 mouth of U1) of single-chip microcomputer U1, its delivery outlet O1-O8 meets the resistance R 5-R12 of different sizes respectively, meet divider resistance R19 then jointly, divider resistance R19 connects the base stage of audion Q4 again, at last by 1 foot of audion Q4 through resistance R 16 access pulse transformer T1, the pulse strength of control output.

This pacemaker has following advantage:

1, this instrument had both kept traditional 40Hz frequency stimulation mode, increased 2.5Hz+40Hz frequency stimulation pattern again, needs according to treatment, reach the optimal stimulus effect by conversion frequency, can effectively increase chronic obstructive pulmonary disease (COPD) disease patient's diaphram anti-fatigue ability, strengthen the diaphram contractility simultaneously.

2, this instrument employing single-chip microcomputer is to the control of pace-making intensity and time, and intelligent degree improves greatly, and all parameters can realize the total digitalization adjusting, and shows by liquid crystal display.In addition, this product has automatic memory function, and the parameter that is provided with when started shooting last time automatically performs when starting shooting next time, uses convenient.Because the software of single-chip microcomputer can be revised at any time, pacing parameter and impulse waveform just can increase according to doctor's requirement or adjust, and need not change hardware and just can realize product up-gradation.

3, this instrument has reduced peripheral circuit owing to adopt powerful single-chip microcomputer for the control core, has therefore improved reliability greatly, has reduced volume, regulates by totally digitilized panel, and is very easy to use.

Description of drawings

Fig. 1 is the contour structures sketch map of the portable external diaphragm pacemaker of frequency conversion;

Fig. 2 is the theory diagram of this pacemaker;

Fig. 3 is the circuit diagram of the host machine part of this pacemaker;

Fig. 4 is the circuit diagram of the impulse output circuit of this pacemaker;

The specific embodiment

Referring to Fig. 1, this pacemaker is made up of the output electrode of shell 1, integrated circuit, liquid crystal display 2 and film key 3 and grafting, the 4th, electrode jack, the 5th, supply hub is formed, the user can set pacing frequency and intensity by film key 3, liquid crystal display 2 shows the work at present parameters, comprises stimulus intensity, stimulus modelity, stimulation number of times/grade, and is characterized in that intelligent degree height, volume are little, easy to use.

Its theory diagram is referring to Fig. 2, and it is to adopt single-chip microcomputer and digital display technique, is core with the single-chip microcomputer, and its pacing frequency and intensity are all by Single-chip Controlling.Single-chip microcomputer uses built-in intervalometer to produce pulse signal, is exported by output electrode after pulse is amplified.The user can set pulse parameter by film key, and per minute pace-making number of times, pulse interval and pace-making intensity can be set.The output pulse has two kinds: a kind of is pulsewidth 0.3ms, frequency 40HZ, and umber of pulse is 48; Another kind is pulsewidth 0.3ms, and frequency 40HZ adds the 350ms square-wave frequency modulation.Divide 20 grades interpulse period (being per minute pace-making number of times), adjustable from 2S-6S.Pace-making intensity is determined by pulse voltage, divides 8 retainings adjustable from 70V-140V.The pace-making state can accurately be controlled by single-chip microcomputer, shows the work at present parameter by liquid crystal display.Regulate by totally digitilized panel, very easy to use, and the parameter that be provided with last time remembers automatically, and next time, start need not to reset.

Control of this pacemaker and output circuit comprise host circuit and impulse output circuit two parts:

Host circuit is referring to Fig. 3, and single-chip microcomputer is selected 89C51 for use, and C1, C2 and crystal Y1 constitute oscillating circuit, are connected with X1, the X2 of single-chip microcomputer respectively by the printed board line, for single-chip microcomputer provides clock.R4, C3 are the electrify restoration circuits of single-chip microcomputer, link to each other with the RESET input of single-chip microcomputer U1.U2 is an eeprom circuit, and it is connected with 10,11 feet of U1 by 6,5 bipods, is used for store operational parameters.The P10-P17 mouth of single-chip microcomputer U1 links to each other with impulse output circuit A, and the P20-P27 mouth links to each other with impulse output circuit B, and impulse output circuit A and impulse output circuit B be corresponding left and right sides output electrode respectively, is used to control the intensity of output pulse.The P03 of single-chip microcomputer U1 and P04 mouth are the output pulse PULSE1 and the PULSE2 of left and right sides output electrode.The P00-P02 mouth of single-chip microcomputer U1 is connected with connector J1, and J1 connects button again, is used for the parameter setting.Single-chip microcomputer U1 connects connector J2 respectively by RD, WR and T1 mouth, and J2 connects liquid crystal display, can show running parameter.Single-chip microcomputer utilizes its inner intervalometer to produce needed pulse signal, exports impulse output circuit to.Owing to selected powerful single-chip microcomputer for use, reduced peripheral circuit, improved reliability greatly.

Impulse output circuit such as Fig. 4, the pulse output signals of single-chip microcomputer is gone into by the PULSE termination, constitutes amplifying circuit by audion Q1, Q2, Q3,2 feet that connect pulse transformer T1 then, pulse transformer T1,5,6 feet of T1 connect connector J3, the output high-voltage pulse.The input port IN1-IN8 of pulse driver U3 connects the P10-P17 mouth (another road impulse output circuit connects the P20-P27 mouth of U1) of single-chip microcomputer U1, its delivery outlet O1-O8 meets the resistance R 5-R12 of different sizes respectively, meet divider resistance R19 then jointly, divider resistance R19 connects the base stage of audion Q4 again, is inserted 1 foot of pulse transformer T1 at last through resistance R 16 by audion Q4.By the resistance of the different sizes of U3 control gating, with the base voltage of control audion Q4 after the R19 dividing potential drop, thereby the primary voltage of control impuls transformator T1 reaches the purpose of controlling the output pulse strength.

The main scope of application of this pacemaker:

1. COPD patient's (as chronic bronchitis, obstructive emphysema, pulmonary heart disease);

2. division of chest disease's postoperative patient;

3. the old people does the respiratory function health care;

4. healthy people but lack physical training person;

5. intractable singultus person.

Claims

1, the portable external diaphragm pacemaker of frequency conversion, be made up of shell, the output electrode that is arranged at control and the output circuit in the shell, the liquid crystal display that is arranged at case surface, film key and grafting, it is characterized in that: control and output circuit comprise host circuit and impulse output circuit two parts;

Host circuit serves as the control core with single-chip microcomputer U1, constitutes oscillating circuit by capacitor C 1, C2 and crystal Y1, is connected with X1, the X2 mouth of single-chip microcomputer respectively by the printed board line, for single-chip microcomputer provides clock; Constitute electrify restoration circuit by R4, C3, link to each other with the RESET input of single-chip microcomputer U1; Other has eeprom circuit U2, and it is connected with 10,11 feet of U1 by 6,5 bipods; The P10-P17 mouth of single-chip microcomputer U1 links to each other with impulse output circuit A, and the P20-P27 mouth links to each other with impulse output circuit B, and impulse output circuit A and impulse output circuit B be corresponding left and right sides output electrode respectively; The P03 of single-chip microcomputer U1 and P04 mouth are the output pulse PULSE1 and the PULSE2 of left and right sides output electrode; The P00-P02 mouth of single-chip microcomputer U1 is connected with connector J1, and J1 connects film key again; Single-chip microcomputer U1 connects connector J2 respectively by RD, WR and T1 mouth, and J2 connects liquid crystal display;

The pulse output signals of the PULSE termination single-chip microcomputer U1 of impulse output circuit constitutes amplifying circuit by audion Q1, Q2, Q3, connects 2 feet of pulse transformer T1 then, and 5,6 feet of T1 connect connector J3, the output high-voltage pulse; The input port IN1-IN8 of pulse driver U3 connects the P10-P17 mouth of single-chip microcomputer U1, another road impulse output circuit connects the P20-P27 mouth of U1, its delivery outlet O1-O8 meets the resistance R 5-R12 of different sizes respectively, meet divider resistance R19 then jointly, divider resistance R19 connects the base stage of audion Q4 again, at last by 1 foot of audion Q4 through resistance R 16 access pulse transformer T1, the pulse strength of control output.