CN1966107A - Arteria radialis radiated laser therapeutic instrument with heart rate and/ blood pressure measuring function - Google Patents
Arteria radialis radiated laser therapeutic instrument with heart rate and/ blood pressure measuring function Download PDFInfo
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- CN1966107A CN1966107A CN 200610020060 CN200610020060A CN1966107A CN 1966107 A CN1966107 A CN 1966107A CN 200610020060 CN200610020060 CN 200610020060 CN 200610020060 A CN200610020060 A CN 200610020060A CN 1966107 A CN1966107 A CN 1966107A
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Abstract
The invention relates to a radial artery radiation laser therapeutic equipment, with heart rate and/blood pressure measurement, wherein it comprises display, CPU, and power source. And it also comprises a group of electrodes to measure heat rate and relative heart rate signal processing circuit; a laser for radiating the radial artery of left wrist, while it contains at least 4 dual semi-conductive laser diodes; safety device for avoiding radiating eye; accurate control circuit for outputting 20-40mw; and blood pressure measurement formed by blood pressure modular circuit and aerated wrist band. The inventive therapeutic equipment has small volume and low cost, with wide application.
Description
Technical field
The present invention relates to a kind of medical treatment device, especially semiconductor laser therapeutic instrument.
Background technology
As working media, the semiconductor laser volume is very little with semi-conducting material for semiconductor laser, and the life-span is long, and power supply architecture is simple, and these advantages attract medical industry research design personnel to replace other kind laser instrument with semiconductor laser just.As the major measure of improving the laser medical apparatus, among the fast development of this trend.Reason has two: one, because the semiconductor laser development is very fast; The 2nd, because an urgent demand of laser medical apparatus miniaturization.
The blood fluorescence of laser excitation mainly is between 600～670nm, and 630～650nm spectrum is in peak value, according to the molecular fluorescence luminous mechanism, excite blood by ground state to excited state, with wavelength be the laser of 630～650nm as lasing light emitter, can reach best therapeutic effect.
On the fluorescence Spectra of chemical substance, 630～650nm fluorescence is the characteristic spectrum of the fast quinoline derivant of blood, and a major function of fast quinoline is synthetic haemachrome, plays an important role in human body oxygen therapy process.From this point, during laser irradiation blood, fast quinoline class material produces energy state and changes (by ground state to excited state), and can cause its chemism increases, thereby causes the activity of haemachrome etc. to increase the blood oxygen carrying capacity increase.Clinical medicine practise for many years proves, wavelength be the semiconductor laser of 650nm as lasing light emitter, can produce good therapeutic effect.
In recent years, theoretical research and the clinical practice of laser technology in medical domain obtained many important achievement and practical experience.The cardiovascular and cerebrovascular vessel laser therapeutic apparatus is exactly a kind of application of semiconductor laser, and this type of laser therapeutic apparatus is divided into internal exposure and extracorporeal irradiation dual mode.
The laser therapeutic apparatus of internal exposure is by laser beam is led laser beam in the human blood with optical fiber pin puncture vessel, behind the laser beam irradiation blood with 1～3mw, can play sensitized erythrocyte, increase erythrocytic morphotropism, reduce erythrocyte and platelet aggregation, make degradation effect under the blood viscosity, thereby improve ischemia, the anoxia of internal organs such as heart and brain, to cerebral infarction, apoplexy, brain blood is fastened, coronary heart disease, acute myocardial infarction, angina pectoris, diseases such as hyperlipidemia all have better curative effect, and have obtained effect preferably in a large amount of clinical practices.But there is fatal shortcoming in Intravascular Laser Irradiation on Blood, during owing to each treatment, all will use the optical fiber puncture vessel, very easily causes cross infection.
The laser therapeutic apparatus of extracorporeal irradiation can avoid intravascular irradiation to use the optical fiber puncture vessel effectively, very easily causes the shortcoming of cross infection.That uses at present mainly contains two kinds of therapeutic modalities:
A kind of is nasal cavity irradiation, and laser therapeutic apparatus major part in the market all is to adopt this type of mode, and the type therapeutic instrument uses the semiconductor laser about a 5mw, by disposable soft cover parcel sleeve pipe, and alternately irradiation about directly stretching into nasal cavity and carrying out.But the nasal cavity irradiation also exists shortcomings such as using inconvenient, unhygienic, frequent more casing replacing, easily user is brought inconvenience, and has the cost that uses consumptive material, has increased the weight of the financial burden of user.
Another kind is the irradiation of laser extracorporeal blood vessel, and medical research shows, when the laser beam vertical incidence body of 650 nano wave lengths, during from body surface irradiation arteries, laser energy sees through skin, muscle and blood vessel wall, by blood absorption, can reach the effect same with Intravascular Laser Irradiation on Blood.Present existing extracorporeal blood vessel irradiating laser therapeutic instrument mainly adopts and is laser instrument that yi word pattern arranges more than 1 or 1 and presses close to the arteries place and carry out the body surface irradiation, and the output of laser instrument is about 5mW～24mW.Because the characteristic that had of arteries body surface laser irradiation, thereby the refractive index match of skin surface, launching spot size are closely related with the Energy distribution in the incident beam.From existing extracorporeal blood vessel irradiating laser therapeutic instrument technical pattern, can not produce enough laser energy densities, thereby fail to carry enough efficient laser energy to arrive arteries generation effect, thereby influence therapeutic efficiency.In addition, existing laser therapeutic apparatus lacks stability control and more effective laser safety safeguard procedures of semiconductor laser power output.
Moreover, for patient's cerebral infarction, apoplexy, brain blood is fastened, coronary heart disease, acute myocardial infarction, angina pectoris, hyperlipidemia, the crowd of symptoms such as hypertension is general all relatively to be concerned about the numerical value of oneself blood pressure, heart rate etc., general laser therapeutic apparatus does not all possess the function of blood pressure test and heart rate test, can not provide more comprehensively to the user, more efficient, safer health care.
Summary of the invention
The purpose of this invention is to provide a kind of health, safety and stable with heart rate and/the radial artery irradiating laser therapeutic instrument of blood pressure measurement function.
To achieve these goals, the present invention has adopted following technical scheme:
A kind of with heart rate and/the radial artery irradiating laser therapeutic instrument of blood pressure measurement function, it comprises display, CPU and power supply, it is characterized in that also comprising:
One group of electrode and heart rate signal treatment circuit thereof that is used to detect heart rate;
Be used to shine the radial artery on the human body left finesse, contain the laser instrument that semiconductor laser diode that 4 above even numbers are set up in parallel constitutes;
Preventing laser device mistake is shone the safety device of eyes;
Make laser power be output as the accurate control circuit of 20～40mw;
With/
The main blood pressure measuring device of forming by blood pressure module circuit and inflatable wrist strap.
Described laser instrument adopts wrist hoop formula location, and laser irradiation is in the radial artery of human body left hand.
The optical maser wavelength that described laser instrument sends is 630nm～670nm.
The information that described display shows comprises electrocardiogram, heart rate, time and power, or the blood pressure value.
The laser therapeutic apparatus of above structure, the employing wavelength is 630nm～670nm, power is the laser of 20～40mw, the radial artery of irradiation human body left side wrist, and, perhaps, bring bigger convenience to people also with blood pressure measuring device with heart rate detection and anti-error safety device according to eyes.The use of this instrument does not have direct contact the, health with the inside of human body.With laser irradiation left hand Artery Vein, the energy of laser is defeated by human body by blood vessel, effective, noinvasive is painless and use easy to operate, but also be provided with anti-error safety device and power output stabilization control circuit according to eyes, and heart rate and/blood pressure measuring device, make safety and stable performance obtain further guarantee, multi-functional machine.This therapeutic instrument volume is little, and cost is low and easy to carry, can not only launch to use in medical institutions such as hospital, clinics, can also use in the family, becomes a kind of physiotherapy health care equipment of domestic.
Description of drawings
Fig. 1 is the structural representation block diagram of laser therapeutic apparatus of the present invention.
Fig. 2 is laser therapeutic apparatus embodiment one a contour structures front schematic view of the present invention.
Fig. 3 is laser therapeutic apparatus embodiment one a contour structures schematic rear view of the present invention.
Fig. 4 is the embodiment one display displaying contents sketch map of laser therapeutic apparatus of the present invention.
Fig. 5 is the embodiment two contour structures front schematic view of laser therapeutic apparatus of the present invention.
Fig. 6 is the embodiment two contour structures schematic rear views of laser therapeutic apparatus of the present invention.
Fig. 7 is the embodiment two display displaying contents sketch maps of laser therapeutic apparatus of the present invention.
Fig. 8 is the laser cavity structure sketch map of laser therapeutic apparatus of the present invention.
Fig. 9 is the embodiment three contour structures sketch maps of laser therapeutic apparatus of the present invention.
Figure 10 is the embodiment three display displaying contents sketch maps of laser therapeutic apparatus of the present invention.
Figure 11 is the accurate control circuit schematic diagram of laser of laser therapeutic apparatus of the present invention.
The specific embodiment
Below, in conjunction with the accompanying drawings, the invention will be further described.
As shown in Figure 1, be structural representation of the present invention, it comprises direct current 3V power supply 1, three heart rate measurement electrodes 2,3,4, memory storage body 5, mode selection switch 6, input control 7, auditory tone cues device 8, electrocardio modular circuit 9, micro computer CPU10, time control circuit 11, LCD MODULE 12, laser safety device 13, the accurate control circuit 14 of laser, laser instrument 15, blood pressure module circuit 16 grades are partly formed.Can be according to implementing requirement, be combined into subsidiary heart rate and/the radial artery irradiating laser therapeutic instrument of blood pressure measurement function.Wherein, power supply 1 is micro computer 10 and electrocardio module 9, blood pressure module 16, laser instrument 15, the accurate control circuit 14 of laser and main control board power supply; Three heart rate measurement electrodes 2,3,4 are delivered to electrocardio modular circuit 9 with the ultra-weak electronic signal of collecting, electrocardio modular circuit 9 with weak electric signal through 8 grades of amplifications, filtering, then the electrocardiosignal of amplifying is delivered to micro computer CPU10 and carry out computing, micro computer CPU10 is through computing, the result who draws heart rate oscillogram and heart rate value delivers to LCD MODULE 12 and shows that whole process is finished automatically.Test result can be saved in the memory storage body 5 by mode selection switch 6 and input control 7.The amplification of weak faradic current process, Filtering Processing that blood pressure module circuit 16 transmits pressure transducer, amplifying signal is delivered to micro computer CPU10 carry out computing, draw that blood pressure systolic pressure, diastolic pressure and pulse values deliver to that LCD MODULE 12 shows and according to WHO blood pressure assortment to hypotension and hypertension by auditory tone cues device 8 prompting of sounding, whole process is finished automatically.Test result can be saved in the memory storage body 5 by mode selection switch 6 and input control 7.Laser instrument 15 adopts the Laser Devices with the feedback signal of providing to form, each Laser Devices independently provides feedback signal, by the operating current of accurate control circuit 14 independent each Laser Devices of control of laser, reach nominal power output then, and effectively prolong the service life of laser instrument; Micro computer CPU10 at first judges by laser safety device 13 whether user has effectively worn therapeutic instrument, does not correctly wear as judging, control key is invalid to the unlatching of laser instrument, and laser instrument 15 is not worked, and can improve the safety that therapeutic instrument uses like this.After effectively having worn laser therapeutic apparatus, could press time and the power set, opening time control circuit 11 carries out countdown work, to accurate control circuit 14 power supplies of laser, laser instrument 15 is started working simultaneously, sends the laser irradiation radial artery.If the countdown time of work finishes, pulse information of time control circuit 11 feedbacks is to micro computer CPU10, and micro computer CPU10 stops the power supply to the accurate control circuit 14 of laser according to the signal of feedback, and laser instrument 15 quits work simultaneously.
As Fig. 2, shown in Figure 3, be embodiment one contour structures just, schematic rear view, be a kind of radial artery irradiating laser therapeutic instrument with heart rate and blood pressure measurement function, it all is assembled into the one main frame with each ingredient among above-mentioned Fig. 1, adopt battery powered, connect the work that gets final product.Comprise LCDs 17 on the front plate of this laser therapeutic apparatus, as the control key panel 19 of input control 7.The laser output cavity 20 and the inflatable wrist strap 18 that is located on the main frame back side that comprise laser instrument 15 on the therapeutic instrument backplate.Main frame is provided with and comprises laser instrument 15, power supply 1, blood pressure test module circuit 16 is to the output of laser instrument 15, the control circuit 14 that the working time is controlled, display module 12 and display and supervisory keyboard, also be provided with miniature inflator, be used for inflatable wrist strap 18 inflations.Said laser instrument 15 is six and is the semiconductor laser tube that parallel three rows arrange, adopting parallel dispersion angle is that 6 degree, vertical divergence angle are that two of the laser tubes of 24 degree are one group and arrange by inclination angle 30 degree, make the overlapping stack of the laser facula that is sent, reach the effect of energy stack irradiation.Described backplate is the panel that has with the corresponding arcwall face of wrist, described laser output cavity 20, and the pressure inductor and the inflatable wrist strap 18 that are used to measure blood pressure are positioned at arcwall face.The inflatable wrist strap 18 and the miniature inflator thereof of the described blood pressure test module circuit 16 and the usefulness of taking blood pressure all are sophisticated prior art products.
Measure blood pressure and need utilize inflation wrist strap 18 interruption artery blood flows, slowly venting then detects blood vessel wall and beats and cause the gas pressure wave of oscillation in the wrist strap in deflation course.When wrist strap 18 internal pressures during greater than systolic pressure, tremulous pulse is closed, the impact of wrist strap endogenous cause of ill near-end pulse and the tiny wave of oscillation occurs; When wrist strap internal pressure during greater than mean arterial pressure, wave of oscillation amplitude increases gradually; When the wrist strap internal pressure approximated mean arterial pressure, ductus arteriosus wall was in load condition, and it is maximum that wave of oscillation amplitude reaches; When the wrist strap internal pressure during less than mean arterial pressure wave of oscillation amplitude reduce gradually; After wrist strap 18 internal pressures were less than diastolic pressure, ductus arteriosus wall was fully expanded at relaxing period, and the tube wall rigidity increases, and wave of oscillation amplitude is kept less level.
For blood pressure measurement, tens seconds the time of process need of once inflating and exitting, in this process, can obtain the pressure oscillation ripple of a series of different amplitudes, the frequency that these waves of oscillation occur is identical with pulse.Carry out match for the pressure oscillation wave train and obtain an envelope, the important evidence that is shaped as definite diastolic pressure and systolic pressure of envelope.At first determine the maximum amplitude of pressure oscillation ripple, then this amplitude multiplied each other with the proportionality coefficient of systolic pressure and diastolic pressure respectively that obtain two new wave of oscillation amplitudes in both sides, their pairing force value are respectively systolic pressure and diastolic pressure.The proportionality coefficient fluctuation range of general systolic pressure is 0.46～0.64, and the proportionality coefficient fluctuation range of diastolic pressure is 0.43～0.73.
When model selection 6 selects current mode of operation to be laser therapy: by keyboard 19 inputs of input control 7, can be to the power in the laser therapy pattern, operations such as treatment time is provided with, and will operate input and deliver to micro computer CPU10 processing, result after micro computer CPU10 handles delivers to LCD MODULE 12 drivings and display screen 17 shows, after pressing start key by the keyboard 19 of input control 7, micro computer 10 at first starts the blood pressure test function, by miniature inflator to the airbag aeration in the wrist strap 18, according to detected pulse signal, after judging that user has been worn on therapeutic instrument on the wrist, the gas of air bag is slowly emitted, the accurate control circuit group 14 of start-up time control circuit 11 and laser then, drive laser 15 is sent laser, radial artery on the left finesse is shone, to human body input energy.Laser therapeutic apparatus at first detects pulse signal and mainly plays to judge whether user correctly uses therapeutic instrument on request, and when only detecting pulse signal, the laser therapy function could be opened, and to prevent laser eyes is damaged, and improves the safety of laser irradiation.Time control circuit 11 mainly plays the effect of time countdown, stops the work of laser instrument by the time of setting.Auditory tone cues device 8 mainly plays the sound prompting effect that laser starts prompting and laser therapy end.
In a word, in use, laser output cavity 20 is aimed at the left hand radial artery, fix the wrist strap 18 of therapeutic instrument, the power-on switch, therapeutic instrument carries out initialization, and default mode is the blood pressure measurement pattern, presses the button in control key panel 19, the time of laser therapy is set, power, handle through input control 7 circuit input micro computer 10, the result drives through LCD MODULE 12, is presented on the LCDs 17, as shown in Figure 4, display screen 17 comprises blood pressure, pulse, Laser Time, power, viewing areas such as battery electric quantity and pattern, micro computer 10 according to detected pulse signal after, user is pressed the startup button in control key panel 19, and laser instrument 15 is started working, and hears the prompt tone that auditory tone cues 8 " ticks " simultaneously, time control circuit 11 beginning countdown work, finish when timing, hear the prompt tone that auditory tone cues 8 " ticks " after, laser instrument 15 quits work.
As Fig. 5, shown in Figure 6, be laser therapeutic apparatus embodiment two contour structures of the present invention just, schematic rear view, be a kind of subsidiary radial artery irradiating laser therapeutic instrument that the heart rate measurement function is arranged.In embodiment two with Fig. 1 in each ingredient except that comprising the blood pressure measuring device that blood pressure test module 16 and wrist strap 18 constitutes all be assembled on the tabular form main frame, adopt battery powered, connection gets final product work.This laser therapeutic apparatus front plate comprises on and off switch 23, LCDs 22, control key panel 24, radial artery alignment mark and work indication 21.Control key panel 24 wherein and display screen 22 are basic identical with control key panel 19 and display screen 17 among Fig. 2.The tabular form main frame is fixed on the left finesse by the fixedly bandage 25 of both sides.The therapeutic instrument backplate comprises laser output cavity 20, and laser safety device window 26 is used for the electrode 4 of thought-read rate, and two sides are provided with two electrodes 2,3 of thought-read rate.Said laser instrument 15 is six and is the semiconductor lasers that parallel three rows arrange, and adopting parallel dispersion angle is that 6 degree, vertical divergence angle are that two in the laser instrument of 24 degree are one group and arrange by inclination angle 30 degree, makes the overlapping stack of hot spot, reaches the synergetic effect of energy.Described backplate is the panel that has with the corresponding arcwall face of left finesse.The electrode 4 of described laser output cavity 20, laser safety device 26, thought-read rate is positioned on this curved rear.
The structure of this laser therapeutic apparatus is still structure content shown in Figure 1, and except blood pressure test module 16, power supply 1 wherein adopts direct current 3V battery or converts the 3V DC-voltage supply to through the 220V electric main; It is laser therapy or heart rate measurement that model selection 6 can be selected current mode of operation; When model selection 6 selects current mode of operation to be heart rate measurement: collect electrocardiosignal by heart rate measurement electrode 2,3,4 and deliver to electrocardio modular circuit 9, electrocardio modular circuit 9 is that integrated electrocardio-data collection and communication interface are the hardware module circuit of one, electrocardio modular circuit 9 image data are through micro computer CPU10 computing, the result is delivered to LCD MODULE 12 to be shown, and the keyboard by input control 7 can be kept at the result in the memory storage body 5, memory storage body 5 can be preserved 100 groups of electrocardios and detect data, has access to reference for the medical worker.
When model selection 6 selects current mode of operation to be laser therapy: by keyboard 24 inputs of input control 7, can be to operations such as the power in the laser therapy pattern, treatment time are provided with, and micro computer CPU10 is delivered in operation handle, the result after micro computer CPU10 handles delivers to LCD MODULE 12 and shows; After pressing start key by the keyboard of input control 7, micro computer 10 is according to the judgement of laser safety device 13, the accurate control circuit group 14 of start-up time control circuit 11 and laser, and drive laser 15 is sent laser.Laser safety device 13 mainly plays judges whether user correctly uses therapeutic instrument on request, when having only the wrist face to cover 20 outlets of laser output cavity and laser safety device window 26 fully, the laser therapy function could be opened, to prevent that laser from damaging eyes, improve the safety of laser irradiation; Time control circuit 11 mainly plays the effect of time countdown, stops the work of laser instrument by the time of setting; Auditory tone cues 8 mainly plays the sound prompting effect that laser starts prompting and laser therapy end.
When pattern when being chosen as thought-read rate pattern, as shown in Figure 6, electrode 4 contacts with human body left hand wrist surface, the operator pushes electrode 2,3 with right hand thumb and forefinger, the careful electrical testing modular circuit 9 of the electric current that each electrode produced is carried out signal and is amplified, relatively reaches high low-pass filtering operation, takes out the electrocardiogram signal, this signal is directly sent into carried out calculation process in the micro computer, again by display screen 22 illustrate ecg wave form figure and heart rate etc. relevant information, see Fig. 7.
As shown in Figure 8, be laser cavity structure sketch map of the present invention.Laser output cavity 20 can adopt six wavelength 650nm among the present invention, the gallium arsenide semiconductor laser diode 27 of power 5mw is as laser instrument 15, and six laser diodes, 27 parallel three rows are arranged, utilize laser diode 27 to have the characteristics of a specific angle of divergence, make the hot spot of six laser diodes be overlapped into a rectangle, concentrate in the cavity 28 of an indent, prevent that laser from rushing down outward, improve the service efficiency and the safety of laser energy, rectangular light spots is just corresponding with the position of radial artery scope, obtain best therapeutic effect, the outer surface of cavity 28 uses transparent organic glass 29 lids tight, to prevent that dust and aqueous vapor from entering laser instrument, impacts laser diode power.
The major parameter of laser instrument of the present invention: wavelength 650nm, peak power output 6 * 5mw.
As shown in Figure 9, be the embodiment three contour structures sketch maps of laser therapeutic apparatus of the present invention, be a kind of radial artery irradiating laser therapeutic instrument with the heart rate measurement function, all functions and Fig. 5 and embodiment's two shown in Figure 6 is basic identical.It comprises that mainframe box 36, LCDs 30, control key panel 31, shunt show LED lamp district 32, shunt output interface district 33, on and off switch 34, laser irradiation device 35; Be integrated with the circuit and the constant-current power supply circuit of structure laser therapeutic apparatus shown in Figure 1 in the mainframe box 36, and carried out corresponding expansion, can carry out the output of 4 tunnel laser instrument 15 simultaneously, adopt mains-supplied.Control key panel 31 and shunt show LED lamp district 32, control key panel 31 can control wherein one the road or the output of the laser instrument 15 on several roads respectively, and respectively laser power, time are provided with, show that LED lamp district 32 can show the online situation of current main frame and a certain road laser irradiation device along separate routes, when wherein one road laser irradiation device 35 is connected to shunt output interface district 33 one of them interface, the LED lamp of representing this road interface will light, and plays the whether effect of operate as normal of detection laser irradiation unit 35 simultaneously; The information that LCDs 30 shows comprises the demonstration that group, power, time are shown respectively as shown in figure 10.On and off switch 34 is main switchs of whole main frame, turns off on and off switch 34, and whole main frame promptly stops all working.
The major parameter of present embodiment: wavelength 650nm, peak power output 4 * 30mW.
The micro computer CPU10 that adopts among above-mentioned three kinds of embodiment be single chip microcomputer MSP430 as central control circuit, finish keyboard input, blood pressure signal collection input, and the ecg signal acquiring input; The control of the demonstration output of time, power, blood pressure, pulse, electrocardiogram, heart rate and laser instrument output, for guaranteeing the reliable and stable work of laser instrument, as embodiment three, also can adopt constant current source to drive semiconductor laser, because the discreteness of laser parameter, drive circuit for laser partly uses the accurate control circuit of discrete laser, when ensureing the output firm power, play and prolong the laser instrument purpose in service life, use several laser instrument on the therapeutic instrument, just use several roads power drives.
The accurate control circuit 14 of laser wherein the accurate control circuit of one road laser principle as shown in figure 11, light sensitive diode PD, capacitor C 1, resistance R 1 and operational amplifier A 1 constitute input signal amplifier; Resistance R 2 and variable resistance R3 and operational amplifier A 2 constitute comparison amplifier; Capacitor C 2 constitutes second comparison amplifier with operational amplifier A 3; Audion D and resistance R 4 and laser diode LD constitute a current source amplifier.Wherein, laser diode LD and the integrated device of light sensitive diode PD.The light part that laser diode LD emits is detected and is converted to the signal of telecommunication by light sensitive diode PD, by operational amplifier A
1, send into comparison amplifier A
3An input.Adjustable DC reference voltage is an adjustable regulated power supply, and it can be used as normal voltage by comparison amplifier A
2Deliver to comparison amplifier A
3Another input, this adjustable voltage stabilizing can realize by regulating adjustable resistance R3.The working condition of circuit is as follows: the reduction of laser diode LD output causes amplifier A on the one hand
1Output voltage reduces, and this voltage is delivered to comparison amplifier A
3An input; On the other hand, send a reference voltage through amplifier A by the direct current reference circuit
2Deliver to amplifier A
3Another input compare, then by amplifier A
3Produce a positive output voltage and deliver to the current source amplifier that mainly constitutes by audion D, the current source output current is increased, thereby the injection current that is serially connected in the laser diode LD on the audion D colelctor electrode is increased, make the laser diode LD Output optical power stable.The control circuit of all the other laser instrument of 5 tunnel is identical.
Claims (7)
1, a kind of with heart rate and/the radial artery irradiating laser therapeutic instrument of blood pressure measurement function, it comprises display, micro computer CPU and power supply, it is characterized in that also comprising:
One group of electrode (2,3,4) and the heart rate signal treatment circuit thereof that is used to detect heart rate, i.e. electrocardio test module (9);
Be used to shine the radial artery on the human body left finesse, contain the laser instrument (15) that semiconductor laser diode that 4 above even numbers are set up in parallel constitutes;
Preventing laser device (15) mistake is shone the safety device (20 and 26) of eyes;
Make laser power be output as the accurate control circuit (14) of 20～40mw;
With/
The main blood pressure measuring device of forming by blood pressure module circuit (16) and inflatable wrist strap (18).
2, according to claim 1 with heart rate and/the radial artery semiconductor laser therapeutic instrument of blood pressure prison amount function, it is characterized in that:
Described laser instrument (15) adopts wrist hoop formula location, and laser irradiation is in the radial artery of human body left hand.
3, according to claim 1 with heart rate and/the radial artery semiconductor laser therapeutic instrument of blood pressure measurement function, it is characterized in that:
The optical maser wavelength that described laser instrument (15) sends is 630nm～670nm.
4, according to claim 1 with heart rate and/the radial artery semiconductor laser therapeutic instrument of blood pressure brake, it is characterized in that:
The information that described display (17,22,30) shows comprises figure, heart rate, long power of time in the heart, or the blood pressure value.
5, according to claim 1 with heart rate and/the radial artery semiconductor laser therapeutic instrument of blood pressure brake, it is characterized in that:
The accurate control circuit of described laser (14) comprises by three operational amplifier (A1, A2, A3) a signal input amplifier and two comparison amplifiers that constitute respectively, and triode amplifier, first operational amplifier (A1) and light sensitive diode (PD), electric capacity (C1) and resistance (R1) constitute the signal input amplifier, second operational amplifier (A2) constitutes first comparison amplifier with resistance (R2) and variable resistance (R3), the electric capacity (C1) of the 3rd operational amplifier (A3) constitutes second comparison amplifier, audion (D), resistance (R4) and laser diode (LD) constitute triode amplifier (A), wherein, the outfan of first and second operational amplifiers (A1 and A2) is just connecing the 3rd operational amplifier respectively, negative input end, the base stage of the output termination audion (D) of the 3rd operational amplifier (A3), laser two utmost points (LD) are serially connected on the colelctor electrode of audion (D), and light sensitive diode (PD) is attempted by between the positive-negative input end of first operational amplifier (A1).
6, according to claim 1 with heart rate and/the radial artery irradiating laser therapeutic instrument of blood pressure measurement function, it is characterized in that:
Comprise the main frame (36) that display, CPU and power supply constitute, with the laser irradiation device (35) that comprises described laser instrument (15) and safety device thereof but the separated into two parts setting, connect by cable (37) between the two, main frame (36) can be with the above multi-path laser irradiation unit (35) of two-way.
7, according to claim 1 with the heart and/the radial artery irradiating laser of blood pressure measurement function treatment letter, it is characterized in that:
Described safety device comprises laser output cavity (20) and laser safety device window (26), wherein, is provided with photoelectric induction type switch or the microswitch that is used to control laser control circuit in the window (26).
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| CN 200610020060 CN1966107A (en) | 2006-08-23 | 2006-08-23 | Arteria radialis radiated laser therapeutic instrument with heart rate and/ blood pressure measuring function |
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