CN110585605A - Laser therapeutic instrument - Google Patents

Abstract

The invention discloses a laser therapeutic apparatus, comprising a laser and a therapeutic optical fiber, wherein the therapeutic optical fiber is connected to the laser; the laser comprises an energy acquisition power supply, a processor, a laser output circuit, an input control circuit and a laser light source; wherein the processor is electrically connected to The input control circuit and the laser output circuit are used to control the laser output circuit to output the laser with the set laser working mode, wavelength, set time and set energy according to the control instructions input by the input control circuit; the laser output circuit is electrically connected to the laser light source, and is used for It is used to control the luminous intensity and luminous duration of the laser light source; the energy acquisition power supply is electrically connected to the laser output circuit for converting vibration or thermal energy into electrical energy, and provides driving current for the laser output circuit. The laser therapeutic apparatus can realize self-power supply by utilizing vibration and thermal energy in the surrounding environment, saves electric energy, prolongs the power supply time, and is easy to carry.

Description

a laser therapy device

technical field

The invention belongs to the technical field of medical devices, and in particular relates to a laser therapeutic apparatus.

Background technique

In recent years, lasers have been widely used in real life, especially a series of lasers including semiconductor lasers. Their light weight, small size and low driving energy make them widely used in optical communication, military engineering, biomedicine and other fields. prospect. In the field of biomedicine, typical applications include laser optical fiber irradiation in vivo, laser dredging arterial vascular obstruction, etc.

The laser therapy device power supply technology belongs to the core part of the laser technology, and the working stability and life of the laser therapy device are directly related to the driving power it uses. In practical work, a high-power switching power supply is generally used to supply pulsed power to the laser, and the laser emits pulsed light to form a pulsed laser. The high-energy pulsed laser generated by the laser needs to be transmitted through the optical fiber, and then the optical fiber enters the human body, so that the energy of the laser can be transmitted to the part that needs to be treated with the laser, and by strictly controlling the luminous parameters of the laser, it is effective and safe for the patient. Treatment.

At present, most of the laser therapy instruments are large in size and require a fixed power source for power-on or charging, which is inconvenient to carry and has a high cost. . There are also some lasers. For the convenience of treatment and portability, the system power supply is powered by an external adapter and the built-in power system (eg, built-in battery and power management circuit) cooperates. However, the current power supply time of medical laser medical instruments is not ideal, and the design of the built-in power management system is not perfect, especially when the external adapter encounters difficulties in power supply, the power supply time is even more unsatisfactory, which greatly limits this type of power supply. Widespread popularity of medical laser therapy instruments.

SUMMARY OF THE INVENTION

In order to solve the above problems existing in the prior art, the present invention provides a laser therapeutic apparatus. The technical problem to be solved by the present invention is realized by the following technical solutions:

The present invention provides a laser therapeutic apparatus, including a laser and a therapeutic optical fiber, wherein,

The therapeutic fiber is connected to the laser, and is driven to emit light by the laser;

The laser includes an energy acquisition power supply, a processor, a laser output circuit, an input control circuit and a laser light source; wherein the processor is electrically connected to the input control circuit and the laser output circuit for controlling the circuit according to the input The inputted control instruction controls the laser output circuit to output the laser with the set laser working mode, wavelength, set time and set energy; the laser output circuit is electrically connected to the laser light source, and is used to control the light emission of the laser light source Intensity and luminous duration; the energy acquisition power supply is electrically connected to the laser output circuit for converting vibration or heat energy into electrical energy, and provides driving current for the laser output circuit.

In one embodiment of the present invention, the energy harvesting power source includes a piezoelectric module, a thermoelectric module, a voltage control module, and a rechargeable battery, and the piezoelectric module and the thermoelectric module are both connected to the voltage control module, wherein ,

The piezoelectric module is used to obtain vibration energy and converted into electrical energy; the thermoelectric module is used to obtain thermal energy and converted into electrical energy; the voltage control module is used to receive the electrical energy from the piezoelectric module and the thermoelectric module, And generate a stable output voltage; the rechargeable battery is used to store electrical energy.

In an embodiment of the present invention, the piezoelectric module includes a piezoelectric sensor, a negative pressure converter unit and an active diode unit connected in sequence, wherein,

The piezoelectric sensor is used to convert the vibration energy of the surrounding environment into an AC output signal; the negative pressure converter unit and the active diode unit are used to rectify the AC output signal into a DC signal and transmit it to the Voltage control module.

In an embodiment of the present invention, the negative voltage converter unit includes a first NMOS transistor, a second NMOS transistor, a third NMOS transistor, a fourth NMOS transistor, a first PMOS transistor, and a second PMOS transistor, wherein,

The source of the first NMOS transistor and the gate of the second NMOS transistor are both connected to the first input terminal, and the source of the second NMOS transistor and the gate of the first NMOS transistor are connected to the second NMOS transistor an input terminal, the drain and substrate of the first NMOS transistor and the drain and substrate of the second NMOS transistor are all connected to the ground terminal;

The source of the first PMOS transistor and the gate of the second PMOS transistor are both connected to the first input terminal, and the source of the second PMOS transistor and the gate of the first PMOS transistor are connected to the second PMOS transistor. an input terminal, the substrate of the first PMOS transistor is connected to the substrate of the second PMOS transistor, and the drain of the first PMOS transistor and the drain of the second PMOS transistor are both connected to the voltage output terminal;

The drain and gate of the third NMOS transistor are connected to the voltage output terminal, the substrate is connected to the ground terminal, and the source is connected to the substrate of the second PMOS transistor;

The source and the substrate of the fourth NMOS transistor are connected to the ground terminal, and the drain and the gate are connected to the source of the third NMOS transistor;

Both the first input terminal and the second input terminal are connected to the output terminal of the piezoelectric sensor.

In an embodiment of the present invention, the active diode unit includes a fifth NMOS transistor, a sixth NMOS transistor, a seventh NMOS transistor, an eighth NMOS transistor, a ninth NMOS transistor, a tenth NMOS transistor, and a third PMOS transistor , the fourth PMOS tube, the fifth PMOS tube, the sixth PMOS tube, the seventh PMOS tube, the eighth PMOS tube, the ninth PMOS tube, the tenth PMOS tube, the eleventh PMOS tube, the twelfth PMOS tube, the tenth PMOS tube Three PMOS transistors, of which,

source and substrate of the fifth NMOS transistor, source and substrate of the sixth NMOS transistor, source and substrate of the seventh NMOS transistor, source and substrate of the eighth NMOS transistor the bottom, the source and substrate of the ninth NMOS transistor, and the source and substrate of the tenth NMOS transistor are all connected to the ground terminal;

The gate and drain of the fifth NMOS transistor are both connected to the drain of the seventh PMOS transistor, the gate and drain of the sixth NMOS transistor are both connected to the drain of the ninth PMOS transistor, and the The gate of the seventh NMOS transistor is connected to the gate of the sixth NMOS transistor, the drain of the seventh NMOS transistor is connected to the drain of the tenth PMOS transistor, and the gate of the eighth NMOS transistor is connected to the The drain of the seventh NMOS transistor and the gate of the eleventh PMOS transistor, the drain of the eighth NMOS transistor is connected to the drain of the eleventh PMOS transistor, and the gate of the ninth NMOS transistor is connected The drain of the eighth NMOS transistor and the gate of the twelfth PMOS transistor, the drain of the ninth NMOS transistor is connected to the drain of the twelfth PMOS transistor, and the gate of the tenth NMOS transistor the electrode is connected to the drain of the ninth NMOS transistor and the gate of the thirteenth PMOS transistor, and the drain of the tenth NMOS transistor is connected to the drain of the thirteenth PMOS transistor;

The source and substrate of the seventh PMOS transistor, the source and substrate of the eighth PMOS transistor, and the substrate of the ninth PMOS transistor are all connected to the negative voltage converter unit, and the seventh PMOS transistor is connected to the negative voltage converter unit. The gate of the PMOS transistor and the gate of the eighth PMOS transistor are both connected to the drain of the seventh PMOS transistor, and the drain of the eighth PMOS transistor is connected to the source of the ninth PMOS transistor, so The gate of the ninth PMOS transistor and the gate of the tenth PMOS transistor are both connected to the ground terminal, and the source of the tenth PMOS transistor is connected to the drain of the eighth PMOS transistor;

The substrate of the tenth PMOS transistor, the source electrode and substrate of the eleventh PMOS transistor, the source electrode and substrate of the twelfth PMOS transistor, and the source electrode and substrate of the thirteenth PMOS transistor are all connected to the voltage control module;

The gate of the sixth PMOS transistor is connected to the drain of the thirteenth PMOS transistor, the source of the sixth PMOS transistor is connected to the negative voltage converter unit, and the drain of the sixth PMOS transistor is connected to the the voltage control module;

The source of the third PMOS transistor, the gate of the fifth PMOS transistor, and the source of the fourth PMOS transistor are all connected to the negative voltage converter unit;

The gate and drain of the third PMOS transistor, the gate of the fourth PMOS transistor, and the source of the fifth PMOS transistor are all connected to the voltage control module;

The substrate of the third PMOS transistor, the substrate and drain of the fourth PMOS transistor, and the substrate and drain of the fifth PMOS transistor are all connected to the substrate of the sixth PMOS transistor.

In one embodiment of the present invention, the thermoelectric module includes a pyroelectric sensor, a start-up circuit, a storage circuit, a mechanical switch, a first capacitor and a second capacitor, wherein,

The pyroelectric sensor is connected to the start-up circuit and the storage circuit, and is used for converting the thermal energy of the surrounding environment into an electrical signal;

the start-up circuit is connected to the storage circuit, and is used for providing a supply voltage for the storage circuit;

the mechanical switch is connected between the starting circuit and the ground terminal, and is used for starting the thermoelectric module;

The storage circuit is connected to the voltage control module, and is used for acquiring and storing the electrical signal from the pyroelectric sensor, and providing a voltage for the voltage control module;

The first capacitor is connected between the output terminal of the startup circuit and the ground terminal, and the second capacitor is connected between the output terminal and the ground terminal of the storage circuit.

In an embodiment of the present invention, the startup circuit includes a first resistor, an inductor, a fourteenth PMOS transistor, an eleventh NMOS transistor, a first reference voltage source, a second resistor, a third resistor, a third capacitor, dynamic comparator, where,

The first resistor and the inductance are connected in series between the output end of the pyroelectric sensor and the source of the fourteenth PMOS transistor, and the gate and drain of the fourteenth PMOS transistor are both connected to the The input terminal of the storage circuit;

The source of the eleventh NMOS transistor is connected to the ground terminal, the gate is connected to the output terminal of the dynamic comparator, and the drain is connected to the node between the inductor and the source of the fourteenth PMOS transistor and connected to the mechanical switch;

The first reference voltage source is connected between the drain of the fourteenth PMOS transistor and the negative input end of the dynamic comparator; the second resistor and the third resistor are connected in series with the fourteenth Between the drain of the PMOS transistor and the ground terminal, the third capacitor is connected in parallel with the third resistor;

The positive input terminal of the dynamic comparator is connected between the second resistor and the third resistor.

In an embodiment of the present invention, the start-up circuit further includes an oscillator, the input end of the oscillator is connected to the drain of the fourteenth PMOS transistor, and the output end is connected to the clock end of the dynamic comparator.

In an embodiment of the present invention, the voltage control module includes a second reference voltage source, a charging control unit, a fifteenth PMOS transistor, an error amplifier, a fourth resistor, a fifth resistor and a fourth capacitor, wherein,

The input end of the second reference voltage source is respectively connected to the source of the fifteenth PMOS transistor, the first input end of the charging control module, the output end of the piezoelectric module and the output end of the thermoelectric module , the output end of the second reference voltage source is connected to the negative input end of the error amplifier;

The substrate of the fifteenth PMOS transistor is connected to its source, the gate is connected to the output end of the charging control module, and the drain serves as the output end of the voltage control module;

The fourth resistor and the fifth resistor are connected in series between the drain and the ground terminal of the fifteenth PMOS transistor, and the fourth capacitor is connected between the drain terminal and the ground terminal of the fifteenth PMOS transistor between;

The positive input end of the error amplifier is connected to the node between the fourth resistor and the fifth resistor, and the output end of the error amplifier is connected to the second input end of the charging control unit; the charging control unit The third input terminal of the unit is connected to the drain of the fifteenth PMOS transistor.

Compared with the prior art, the beneficial effects of the present invention are:

1. The laser therapy instrument of the present invention is provided with a piezoelectric module and a thermoelectric module, which can convert vibration and thermal energy in the surrounding environment into electrical energy to power the instrument, realize self-power supply, save electrical energy, prolong power supply time, and be easy to carry.

2. The laser therapeutic apparatus uses an active diode unit as a switch in the piezoelectric module, the AC output signal is rectified into a DC signal, the current stage circuit voltage is greater than the back-end load voltage, and the PMOS tube in the active diode unit is turned on, Charge the load; when the back-end load voltage is greater than the front-end circuit, the PMOS tube is turned off, and the conduction voltage drop of the PMOS tube is almost zero, thus effectively reducing the energy loss during the conduction process.

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

Description of drawings

1 is a schematic structural diagram of a laser therapeutic apparatus provided by an embodiment of the present invention;

2 is a schematic structural diagram of a therapeutic optical fiber provided by an embodiment of the present invention;

3 is a block diagram of an energy acquisition power supply provided by an embodiment of the present invention;

4 is a schematic diagram of a circuit structure of a laser output circuit provided by an embodiment of the present invention;

5 is a schematic diagram of a circuit structure of a laser driving circuit provided by an embodiment of the present invention;

6 is a schematic structural diagram of a piezoelectric module provided by an embodiment of the present invention;

7 is a circuit diagram of a negative pressure conversion unit provided by an embodiment of the present invention;

8 is a circuit diagram of an active diode unit provided by an embodiment of the present invention;

9 is an equivalent circuit diagram of an active diode unit provided by an embodiment of the present invention;

10 is a schematic structural diagram of a thermoelectric module provided by an embodiment of the present invention;

11 is a circuit diagram of a startup circuit provided by an embodiment of the present invention;

FIG. 12 is a circuit diagram of a voltage control module provided by an embodiment of the present invention.

Detailed ways

In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, a laser therapeutic apparatus according to the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

The foregoing and other technical contents, features and effects of the present invention can be clearly presented in the following detailed description of the specific implementation with the accompanying drawings. Through the description of the specific embodiments, the technical means and effects adopted by the present invention to achieve the predetermined purpose can be more deeply and specifically understood. However, the accompanying drawings are only for reference and description, and are not used for the technical description of the present invention. program is restricted.

Example 1

Please refer to FIG. 1 . FIG. 1 is a schematic structural diagram of a laser therapy apparatus provided by an embodiment of the present invention. The laser therapeutic apparatus includes a laser 1 and a therapeutic fiber 2, wherein the therapeutic fiber 2 is connected to the laser 1, and is driven to emit light by the laser 1; the laser 1 includes an energy acquisition power supply 11, a processor 12, a laser output circuit 13, and an input control circuit 14. and the laser light source 15; wherein, the processor 12 is electrically connected to the input control circuit 14 and the laser output circuit 13, and is used to control the laser output circuit 13 to output the set laser working mode, wavelength, and set time according to the control instructions input by the input control circuit 14. The laser output circuit 13 is electrically connected to the laser light source 15 for controlling the luminous intensity and luminous duration of the laser light source 15; the energy acquisition power source 11 is electrically connected to the laser output circuit 13 for converting vibration or thermal energy into electrical energy , and provide driving current for the laser output circuit 13 .

The therapeutic fiber 2 is used to be implanted in a patient during surgery to irradiate and repair the site to be treated, and then removed after surgery. Specifically, please refer to FIG. 2 , which is a schematic structural diagram of a therapeutic optical fiber provided by an embodiment of the present invention. The therapeutic fiber 2 in this embodiment includes a plurality of laser fibers 21 of predetermined lengths, a plurality of fiber connection assemblies 22, a fiber guide structure 23, and a fiber controller 24; the laser fibers 21 are sequentially connected through the fiber connection assemblies 22, A concatenated optical fiber structure 25 is formed, one end of the concatenated optical fiber structure 25 is connected to the optical fiber guiding structure 23, and the other end is connected to the optical fiber controller 24; wherein, each optical fiber connection assembly 22 is provided with a pressure sensor 26, and the pressure sensor 26 is connected to the optical fiber control The pressure sensor 26 is used for detecting the pressure data of the optical fiber connection assembly 22, and the optical fiber controller 24 is used for judging the coupling state of the medical optical fiber according to the pressure data. The optical fiber controller can be a control chip such as an MCU, as long as it can receive, send, display, and alarm data.

Further, the laser 1 further includes an LCD touch screen (not shown in the drawings), the LCD touch screen is electrically connected to the input control circuit 14 for receiving user control instructions and displaying the current working state of the laser.

Next, please refer to FIG. 3 , which is a block diagram of an energy acquisition power supply provided by an embodiment of the present invention. The energy harvesting power source 11 of this embodiment includes a piezoelectric module 111 , a thermoelectric module 112 , a voltage control module 113 and a rechargeable battery 114 , and the piezoelectric module 111 and the thermoelectric module 112 are both connected to the voltage control module 113 , wherein the piezoelectric module 111 It is used to obtain vibration energy and convert it into electrical energy; the thermoelectric module 112 is used to obtain thermal energy and convert it into electric energy; the voltage control module 113 is used to receive the electric energy from the piezoelectric module 111 and the thermoelectric module 112 and generate a stable output voltage; rechargeable The battery 114 is used to store electrical energy and to power the other components of the laser 1 .

The processor 12 may be a device with processing functions, such as a microcontroller MCU, a single-chip microcomputer, or a programmable logic controller FPGA.

Please refer to FIG. 4 , which is a schematic diagram of a circuit structure of a laser output circuit provided by an embodiment of the present invention. The laser output circuit 13 includes a power control circuit 131 and a laser drive circuit 132 ; wherein, the power control circuit 131 is electrically connected to the processor 12 , the energy acquisition power supply 11 and the laser drive circuit 132 respectively, and is used to obtain energy according to the control instructions of the processor 12 . The rated voltage output by the power supply 11 is converted into a required constant driving current, and the driving current is output to the laser driving circuit 132 to drive the laser driving circuit 132 to work; the laser driving circuit 132 is electrically connected to the laser light source 15 for controlling the laser The luminous intensity and luminous duration of the light source 15 .

Please refer to FIG. 5. FIG. 5 is a schematic diagram of a circuit structure of a laser driving circuit according to an embodiment of the present invention. The laser driving circuit 132 includes a pulse generating unit 1321, a pulse shaping unit 1322, a power amplifying unit 1323 and a protection unit 1324; wherein the pulse generating unit 1321, the pulse shaping unit 1322, the power amplifying unit 1323 and the therapeutic fiber 2 are electrically connected in series in sequence. The protection unit 1324 is connected in parallel at the node where the power amplifying unit 1323 and the therapeutic fiber 2 are connected in series.

In addition, the laser therapy device can also include a laser protection system, which is used for real-time monitoring and early warning of temperature, current, and optical power, timing feedback, and shutting down the laser 1 when abnormal to ensure the safety of the laser 1 and the patient.

The laser therapy device of this embodiment is provided with a piezoelectric module and a thermoelectric module, which can convert vibration and thermal energy in the surrounding environment into electrical energy and store the generated electrical energy in a rechargeable battery to power the device, thereby realizing self- Power supply, saving power, extending power supply time and easy to carry.

Embodiment 2

On the basis of the above embodiments, this embodiment will describe the specific structure of the energy acquisition module in detail.

Please refer to FIG. 6 , which is a schematic structural diagram of a piezoelectric module provided by an embodiment of the present invention. The piezoelectric module 111 of this embodiment includes a piezoelectric sensor 1111, a negative pressure converter unit 1112 and an active diode unit 1113 connected in sequence, wherein the piezoelectric sensor 1111 is used to convert the vibration energy of the surrounding environment into an AC output signal, The piezoelectric sensor 1111 can be fixed on a vibrating object or human body to convert the vibration energy into electrical energy to charge the rechargeable battery 114 . Specifically, the piezoelectric sensor 1111 converts the vibration energy of the surrounding environment into an AC output signal, which is generally equivalent to a model in which a sinusoidal current source, parasitic capacitance, and parasitic resistance are connected in parallel. The negative voltage converter unit 1112 and the active diode unit 1113 are used to rectify the AC output signal into a DC signal and transmit it to the voltage control module 113 . Specifically, the negative voltage converter unit 1112 converts the negative component in the AC output signal into a positive component. The active diode unit 1113 acts as a switch. When the current stage circuit voltage is greater than the load voltage, the MOS tube is turned on to charge the load; when the load voltage is greater than the previous stage circuit, the MOS tube is turned off.

Further, please refer to FIG. 7 , which is a circuit diagram of a negative voltage conversion unit provided by an embodiment of the present invention. The negative voltage converter unit 1112 of this embodiment includes a first NMOS transistor N1, a second NMOS transistor N2, a third NMOS transistor N3, a fourth NMOS transistor N4, a first PMOS transistor P1 and a second PMOS transistor P2, wherein the The source of an NMOS transistor N1 and the gate of the second NMOS transistor N2 are both connected to the first input terminal Vin1, the source of the second NMOS transistor N2 and the gate of the first NMOS transistor N1 are connected to the second input terminal Vin2, The drain and substrate of the first NMOS transistor N1 and the drain and substrate of the second NMOS transistor N2 are connected to the ground terminal GND; the source of the first PMOS transistor P1 and the gate of the second PMOS transistor P2 are both connected to the An input terminal Vin1, the source of the second PMOS transistor P2 and the gate of the first PMOS transistor P1 are connected to the second input terminal Vin2, the substrate of the first PMOS transistor P1 is connected to the substrate of the second PMOS transistor P2, and the first PMOS transistor P1 is connected to the substrate of the second PMOS transistor P2. The drain of the PMOS transistor P1 and the drain of the second PMOS transistor P2 are both connected to the voltage output terminal Vnvc; the drain and gate of the third NMOS transistor N3 are connected to the voltage output terminal Vnvc, the substrate is connected to the ground terminal, and the source is connected to the second The substrate of the PMOS transistor P2; the source and the substrate of the fourth NMOS transistor N4 are connected to the ground terminal GND, and the drain and gate are connected to the source of the third NMOS transistor N3; the first input terminal Vin1 and the second input terminal Vin2 are both Connect to the output of the piezoelectric sensor 1111.

Further, please refer to FIG. 8 , which is a circuit diagram of an active diode unit provided by an embodiment of the present invention. The active diode unit 1113 of this embodiment includes a fifth NMOS transistor N5, a sixth NMOS transistor N6, a seventh NMOS transistor N7, an eighth NMOS transistor N8, a ninth NMOS transistor N9, a tenth NMOS transistor N10, and a third PMOS transistor P3, fourth PMOS transistor P4, fifth PMOS transistor P5, sixth PMOS transistor P6, seventh PMOS transistor P7, eighth PMOS transistor P8, ninth PMOS transistor P9, tenth PMOS transistor P10, eleventh PMOS transistor P11 , the twelfth PMOS transistor P12, and the thirteenth PMOS transistor P13, wherein the source and substrate of the fifth NMOS transistor N5, the source and substrate of the sixth NMOS transistor N6, and the source and substrate of the seventh NMOS transistor N7 The substrate, the source and substrate of the eighth NMOS transistor N8, the source and substrate of the ninth NMOS transistor N9, and the source and substrate of the tenth NMOS transistor N10 are all connected to the ground terminal GND; the fifth NMOS transistor N5 The gate and drain are connected to the drain of the seventh PMOS transistor P7, the gate and drain of the sixth NMOS transistor N6 are both connected to the drain of the ninth PMOS transistor P9, and the gate of the seventh NMOS transistor N7 is connected to the sixth The gate of the NMOS transistor N6, the drain of the seventh NMOS transistor N7 is connected to the drain of the tenth PMOS transistor P10, the gate of the eighth NMOS transistor N8 is connected to the drain of the seventh NMOS transistor N7 and the drain of the eleventh PMOS transistor P11 The gate, the drain of the eighth NMOS transistor N8 is connected to the drain of the eleventh PMOS transistor P11, the gate of the ninth NMOS transistor N9 is connected to the drain of the eighth NMOS transistor N8 and the gate of the twelfth PMOS transistor P12, The drain of the ninth NMOS transistor N9 is connected to the drain of the twelfth PMOS transistor P12, the gate of the tenth NMOS transistor N10 is connected to the drain of the ninth NMOS transistor N9 and the gate of the thirteenth PMOS transistor P13, and the tenth NMOS transistor N10 is connected to the drain of the ninth NMOS transistor N9 and the gate of the thirteenth PMOS transistor P13. The drain of the transistor N10 is connected to the drain of the thirteenth PMOS transistor P13; the source and substrate of the seventh PMOS transistor P7, the source and substrate of the eighth PMOS transistor P8, and the substrate of the ninth PMOS transistor P9 are all connected To the negative voltage converter unit 1112, the gate of the seventh PMOS transistor P7 and the gate of the eighth PMOS transistor P8 are both connected to the drain of the seventh PMOS transistor P7, and the drain of the eighth PMOS transistor P8 is connected to the ninth PMOS transistor The source of the transistor P9, the gate of the ninth PMOS transistor P9 and the gate of the tenth PMOS transistor P10 are all connected to the ground terminal GND, and the source of the tenth PMOS transistor P10 is connected to the drain of the eighth PMOS transistor P8; The substrate of the ten PMOS transistor P10, the source and substrate of the eleventh PMOS transistor P11, the source and substrate of the twelfth PMOS transistor P12, and the source and substrate of the thirteenth PMOS transistor P13 are all connected to the voltage Control module 113; the gate of the sixth PMOS transistor P6 is connected to the drain of the thirteenth PMOS transistor P13, the source of the sixth PMOS transistor P6 is connected to the negative voltage converter unit 1112, and the drain of the sixth PMOS transistor P6 is connected to Voltage control module 113; third PM The source of the OS transistor P3, the gate of the fifth PMOS transistor P5, and the source of the fourth PMOS transistor P4 are all connected to the negative voltage converter unit 1112; the gate and drain of the third PMOS transistor P3, the fourth PMOS transistor The gate of P4 and the source of the fifth PMOS transistor P5 are connected to the voltage control module 113; the substrate of the third PMOS transistor P3, the substrate and drain of the fourth PMOS transistor P4, and the substrate of the fifth PMOS transistor P5 and the drain are connected to the substrate of the sixth PMOS transistor P6.

FIG. 9 is an equivalent circuit diagram of an active diode unit provided by an embodiment of the present invention. As shown in the figure, the active diode unit 1113 can be equivalent to a PMOS transistor and a comparator, wherein the gate of the PMOS transistor is connected to the output terminal of the comparator, and the source and drain of the PMOS transistor are respectively Connect the non-inverting and inverting inputs of the comparator. When the voltage of the front-end circuit is greater than the back-end load voltage, the PMOS tube in the active diode unit is turned on to charge the load; when the back-end load voltage is greater than the front-end circuit, the PMOS tube is turned off, and the conduction voltage drop of the PMOS tube is almost zero. , thereby effectively reducing the energy loss during the conduction process.

Further, please refer to FIG. 10 , which is a schematic structural diagram of a thermoelectric module provided by an embodiment of the present invention. The thermoelectric module 112 includes a pyroelectric sensor 1121, a start-up circuit 1122, a storage circuit 1123, a mechanical switch K, a first capacitor C1 and a second capacitor C2, wherein the pyroelectric sensor 1121 is connected to the start-up circuit 1122 and the storage circuit 1123, and is used to connect the surrounding environment. Thermal energy is converted into electrical signals. In this embodiment, the pyroelectric sensor 1121 can be fixed on the human body or any other object with a temperature difference from the ambient temperature, so as to convert the thermal energy in the surrounding environment into electrical energy to charge the rechargeable battery 114 . The start-up circuit 1122 is connected to the storage circuit 1123 for providing the supply voltage for the storage circuit 1123; the mechanical switch K is connected between the start-up circuit 1122 and the ground terminal GND for starting the thermoelectric module 112; the storage circuit 1123 is connected to the voltage control module 113, with In order to obtain and store the electrical signal from the pyroelectric sensor 1121 and provide voltage for the voltage control module 113; Between the output terminal and the ground terminal GND.

Specifically, the pyroelectric sensor 1121 can generally be equivalent to a voltage source with internal resistance to generate the voltage signal VIN3. The start-up circuit 1122 is used to receive the acquired voltage signal VIN3, and after the boosting process, determine whether the voltage value reaches the standard for supplying power to the internal circuit, and provide a supply voltage for the storage circuit 1123, thereby starting the storage circuit to perform the electric energy generated by the pyroelectric sensor 1121. It is stored to provide the voltage Vout2 for the subsequent circuit.

Further, please refer to FIG. 11 , which is a circuit diagram of a startup circuit provided by an embodiment of the present invention. The startup circuit 1122 includes a first resistor R1, an inductor L, a fourteenth PMOS transistor P14, an eleventh NMOS transistor N11, a first reference voltage source U1, a second resistor R2, a third resistor R3, a third capacitor C3, a dynamic comparison Comp, wherein the first resistor R1 and the inductor L are connected in series between the output end of the pyroelectric sensor 1121 and the source of the fourteenth PMOS transistor P14, and the gate and drain of the fourteenth PMOS transistor P14 are both connected to the storage circuit The input terminal of 1123; the source of the eleventh NMOS transistor N11 is connected to the ground terminal GND, the gate is connected to the output terminal of the dynamic comparator Comp, and the drain is connected between the inductor L and the source of the fourteenth PMOS transistor P14. node and connected to the mechanical switch K; the first reference voltage source U1 is connected between the drain of the fourteenth PMOS transistor P14 and the negative input of the dynamic comparator Comp; the second resistor R2 and the third resistor R3 are connected in series with the Between the drain of the fourteen PMOS transistor P14 and the ground terminal, the third capacitor C3 is connected in parallel with the third resistor R3; the positive input terminal of the dynamic comparator Comp is connected between the second resistor R2 and the third resistor R3.

Further, the start-up circuit 1122 further includes an oscillator B, the input end of the oscillator B is connected to the drain of the fourteenth PMOS transistor P14, and the output end is connected to the clock end of the dynamic comparator Comp.

Specifically, the mechanical switch K is used to control the startup of the initial working mode of the thermoelectric module 112 . For example, when the energy obtained by the piezoelectric module 111 is insufficient or intermittent, the mechanical switch K can be used to activate the thermoelectric acquisition mode. Its main working principle is: when the mechanical switch K is turned on, the energy obtained by thermoelectricity flows through the inductor L in the form of current. When the mechanical switch K is turned off, the inductor current forces the fourteenth PMOS transistor P14 to turn on, charging the first capacitor C1. , to obtain the voltage V _DD :

Among them, R is the equivalent internal resistance of the pyroelectric acquisition source, that is, the pyroelectric sensor, and R _SW is the equivalent resistance of the active diode unit. It can be found from the above formula that the required power supply voltage V _DD can be obtained by rationally designing the size of the resistor and capacitor, and the generated V _DD is used to start the oscillator B and the first reference voltage source U1, and the oscillator B generates the corresponding clock signal. A reference voltage source U1 generates a reference voltage, and V _DD realizes the self-powered effect. The dynamic comparator Comp is used to detect the input signal. When the V _DD obtained by the input signal is lower than the starting voltage required by the subsequent instrument, the enable control signal controls the re-acquisition of thermoelectric energy.

It should be noted that the structure of the storage circuit 1123 is the same as that of the start-up circuit 1122 , except that the second capacitor C2 connected to it is a super capacitor, so it is not repeated here.

Further, please refer to FIG. 12 , which is a circuit diagram of a voltage control module provided by an embodiment of the present invention. The voltage control module 113 includes a second reference voltage source U2, a charging control unit CONT, a fifteenth PMOS transistor P15, an error amplifier H1, a fourth resistor R4, a fifth resistor R5 and a fourth capacitor C4, wherein the second reference voltage source The input terminal of U2 is respectively connected to the source of the fifteenth PMOS transistor P15, the first input terminal of the charging control module CONT, the output terminal of the piezoelectric module 111 and the output terminal of the thermoelectric module 112, and the output terminal of the second reference voltage source U2 The negative input terminal of the error amplifier H1 is connected; the substrate of the fifteenth PMOS transistor P15 is connected to its source, the gate is connected to the output terminal of the charging control module CONT, and the drain is used as the output terminal Vout3 of the voltage control module 113; the fourth resistor R4 and the fifth resistor R5 are connected in series between the drain of the fifteenth PMOS transistor P15 and the ground terminal GND, and the fourth capacitor C4 is connected between the drain of the fifteenth PMOS transistor P15 and the ground terminal GND; the error amplifier H1 The positive input terminal is connected to the node between the fourth resistor R4 and the fifth resistor R5, and the output terminal of the error amplifier H1 is connected to the second input terminal of the charging control unit CONT; the third input terminal of the charging control unit CONT is connected to the tenth The drains of the five PMOS transistors P15.

Specifically, the second reference voltage source U2 is used to generate a reference voltage Vref, the error amplifier H1 is used to amplify the difference between the output voltage from the piezoelectric module 111 and the thermoelectric module 112 and the reference voltage Vref, and the charging control unit CONT is a logic The circuit controls the conduction time of the fifteenth PMOS transistor according to the output value of the error amplifier H1, thereby controlling the magnitude of the output voltage Vout3. Here, the drain of the fifteenth PMOS transistor P15 is connected to the input terminal of the rechargeable battery 114 as the output terminal Vout3 of the voltage control module 113 to provide a stable voltage signal for the rechargeable battery 114, thereby improving the power supply time of the rechargeable battery 114 , and by converting the thermal energy and vibration energy in the environment into electrical energy in real time and storing it in the rechargeable battery 114, energy can be saved.

The laser therapy apparatus of this embodiment is provided with a piezoelectric module and a thermoelectric module, which can convert vibration and thermal energy in the surrounding environment into electrical energy to supply power to the apparatus, realize self-power supply, save electrical energy, prolong power supply time, and be easy to carry. In addition, the laser therapy apparatus uses an active diode unit as a switch in the piezoelectric module, the AC output signal is rectified into a DC signal, the current stage circuit voltage is greater than the back-end load voltage, and the PMOS tube in the active diode unit is turned on, Charge the load; when the back-end load voltage is greater than the front-end circuit, the PMOS tube is turned off, and the conduction voltage drop of the PMOS tube is almost zero, thus effectively reducing the energy loss during the conduction process.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be considered that the specific implementation of the present invention is limited to these descriptions.

Claims (9)

1. A laser therapeutic apparatus is characterized by comprising a laser (1) and a therapeutic optical fiber (2), wherein,

the treatment optical fiber (2) is connected to the laser (1) and is driven to emit light by the laser (1);

the laser (1) comprises an energy acquisition power supply (11), a processor (12), a laser output circuit (13), an input control circuit (14) and a laser light source (15); the processor (12) is electrically connected with the input control circuit (14) and the laser output circuit (13) and is used for controlling the laser output circuit (13) to output laser with set laser working mode, wavelength, set time and set energy according to a control instruction input by the input control circuit (14); the laser output circuit (13) is electrically connected with the laser light source (15) and is used for controlling the light emitting intensity and the light emitting duration of the laser light source (15); the energy acquisition power supply (11) is electrically connected with the laser output circuit (13) and is used for converting vibration or heat energy into electric energy and providing driving current for the laser output circuit (13).

2. Laser treatment apparatus according to claim 1, characterized in that the energy harvesting power supply (11) comprises a piezoelectric module (111), a thermoelectric module (112), a voltage control module (113) and a rechargeable battery (114), the piezoelectric module (111) and the thermoelectric module (112) being connected to the voltage control module (113), wherein,

the piezoelectric module (111) is used for acquiring vibration energy and converting the vibration energy into electric energy; the thermoelectric module (112) is used for acquiring heat energy and converting the heat energy into electric energy; the voltage control module (113) is used for receiving electric energy from the piezoelectric module (111) and the thermoelectric module (112) and generating stable output voltage; the rechargeable battery (114) is used for storing electric energy.

3. Laser treatment apparatus according to claim 2, characterized in that the piezoelectric module (111) comprises a piezoelectric sensor (1111), a negative pressure converter unit (1112) and an active diode unit (1113) connected in series,

the piezoelectric sensor (1111) is used for converting vibration energy of the surrounding environment into an alternating current output signal; the negative voltage converter unit (1112) and the active diode unit (1113) are used for rectifying the alternating current output signal into a direct current signal and transmitting the direct current signal to the voltage control module (113).

4. Laser treatment apparatus according to claim 3, wherein the negative pressure converter unit (1112) comprises a first NMOS transistor (N1), a second NMOS transistor (N2), a third NMOS transistor (N3), a fourth NMOS transistor (N4), a first PMOS transistor (P1) and a second PMOS transistor (P2),

the source electrode of the first NMOS tube (N1) and the gate electrode of the second NMOS tube (N2) are both connected to a first input end (Vin1), the source electrode of the second NMOS tube (N2) and the gate electrode of the first NMOS tube (N1) are connected to a second input end (Vin2), the drain electrode and the substrate of the first NMOS tube (N1) and the drain electrode and the substrate of the second NMOS tube (N2) are both connected to a ground end (GND);

the source electrode of the first PMOS tube (P1) and the gate electrode of the second PMOS tube (P2) are both connected to a first input end (Vin1), the source electrode of the second PMOS tube (P2) and the gate electrode of the first PMOS tube (P1) are connected to a second input end (Vin2), the substrate of the first PMOS tube (P1) is connected with the substrate of the second PMOS tube (P2), and the drain electrode of the first PMOS tube (P1) and the drain electrode of the second PMOS tube (P2) are both connected with a voltage output end (Vnvc);

the drain and the gate of the third NMOS transistor (N3) are connected with the voltage output end (Vnvc), the substrate is connected with the ground end, and the source is connected with the substrate of the second PMOS transistor (P2);

the source electrode and the substrate of the fourth NMOS tube (N4) are connected with a ground terminal (GND), and the drain electrode and the gate electrode are connected with the source electrode of the third NMOS tube (N3);

the first input (Vin1) and the second input (Vin2) are both connected to an output of the piezoelectric sensor (1111).

5. The laser therapeutic apparatus according to claim 3, wherein the active diode unit (1113) comprises a fifth NMOS transistor (N5), a sixth NMOS transistor (N6), a seventh NMOS transistor (N7), an eighth NMOS transistor (N8), a ninth NMOS transistor (N9), a tenth NMOS transistor (N10), a third PMOS transistor (P3), a fourth PMOS transistor (P4), a fifth PMOS transistor (P5), a sixth PMOS transistor (P6), a seventh PMOS transistor (P7), an eighth PMOS transistor (P8), a ninth PMOS transistor (P9), a tenth PMOS transistor (P10), an eleventh PMOS transistor (P11), a twelfth PMOS transistor (P12), and a thirteenth PMOS transistor (P13), wherein,

the source electrode and the substrate of the fifth NMOS transistor (N5), the source electrode and the substrate of the sixth NMOS transistor (N6), the source electrode and the substrate of the seventh NMOS transistor (N7), the source electrode and the substrate of the eighth NMOS transistor (N8), the source electrode and the substrate of the ninth NMOS transistor (N9), and the source electrode and the substrate of the tenth NMOS transistor (N10) are all connected to a ground terminal (GND);

a gate and a drain of the fifth NMOS transistor (N5) are both connected to a drain of the seventh PMOS transistor (P7), a gate and a drain of the sixth NMOS transistor (N6) are both connected to a drain of the ninth PMOS transistor (P9), a gate of the seventh NMOS transistor (N7) is connected to a gate of the sixth NMOS transistor (N6), a drain of the seventh NMOS transistor (N7) is connected to a drain of the tenth PMOS transistor (P10), a gate of the eighth NMOS transistor (N8) is connected to a drain of the seventh NMOS transistor (N7) and a gate of the eleventh PMOS transistor (P11), a drain of the eighth NMOS transistor (N8) is connected to a drain of the eleventh PMOS transistor (P11), a gate of the ninth NMOS transistor (N9) is connected to a drain of the eighth NMOS transistor (N8) and a drain of the twelfth PMOS transistor (P12), a gate of the ninth NMOS transistor (N356) is connected to a drain of the ninth PMOS transistor (N3527), and a drain of the twelfth PMOS transistor (N10) is connected to a drain of the twelfth PMOS transistor (N3527) P13), the drain of the tenth NMOS transistor (N10) is connected to the drain of the thirteenth PMOS transistor (P13);

a source and a substrate of the seventh PMOS transistor (P7), a source and a substrate of the eighth PMOS transistor (P8), a substrate of the ninth PMOS transistor (P9) are both connected to the negative voltage converter unit (1112), a gate of the seventh PMOS transistor (P7) and a gate of the eighth PMOS transistor (P8) are both connected to a drain of the seventh PMOS transistor (P7), a drain of the eighth PMOS transistor (P8) is connected to a source of the ninth PMOS transistor (P9), a gate of the ninth PMOS transistor (P9) and a gate of the tenth PMOS transistor (P10) are both connected to a ground terminal (GND), and a source of the tenth PMOS transistor (P10) is connected to a drain of the eighth PMOS transistor (P8);

the substrate of the tenth PMOS tube (P10), the source electrode and the substrate of an eleventh PMOS tube (P11), the source electrode and the substrate of a twelfth PMOS tube (P12) and the source electrode and the substrate of a thirteenth PMOS tube (P13) are all connected to the voltage control module (113);

the grid electrode of the sixth PMOS tube (P6) is connected to the drain electrode of a thirteenth PMOS tube (P13), the source electrode of the sixth PMOS tube (P6) is connected with the negative voltage converter unit (1112), and the drain electrode of the sixth PMOS tube (P6) is connected with the voltage control module (113);

the source electrode of the third PMOS tube (P3), the grid electrode of the fifth PMOS tube (P5) and the source electrode of the fourth PMOS tube (P4) are all connected to the negative voltage converter unit (1112);

the grid electrode and the drain electrode of the third PMOS tube (P3), the grid electrode of the fourth PMOS tube (P4) and the source electrode of the fifth PMOS tube (P5) are all connected to the voltage control module (113);

the substrate and the drain of the third PMOS tube (P3), the substrate and the drain of the fourth PMOS tube (P4), and the substrate and the drain of the fifth PMOS tube (P5) are all connected to the substrate of the sixth PMOS tube (P6).

6. Laser treatment apparatus according to claim 2, characterized in that the thermo electric module (112) comprises a thermo electric sensor (1121), an activation circuit (1122), a storage circuit (1123), a mechanical switch (K), a first capacitor (C1) and a second capacitor (C2), wherein,

the thermoelectric sensor (1121) is connected with the starting circuit (1122) and the storage circuit (1123) and is used for converting the heat energy of the surrounding environment into an electric signal;

the starting circuit (1122) is connected with the storage circuit (1123) and used for providing a power supply voltage for the storage circuit (1123);

the mechanical switch (K) is connected between the starting circuit (1122) and a Ground (GND) for starting the thermoelectric module (112);

the storage circuit (1123) is connected with the voltage control module (113) and is used for acquiring and storing the electric signal from the thermoelectric sensor (1121) and providing voltage for the voltage control module (113);

the first capacitor (C1) is connected between the output terminal of the start-up circuit (1122) and Ground (GND), and the second capacitor (C2) is connected between the output terminal of the memory circuit (1123) and Ground (GND).

7. The therapeutic laser device according to claim 6, wherein the start circuit (1122) comprises a first resistor (R1), an inductor (L), a fourteenth PMOS transistor (P14), an eleventh NMOS transistor (N11), a first reference voltage source (U1), a second resistor (R2), a third resistor (R3), a third capacitor (C3), and a dynamic comparator (Comp),

the first resistor (R1) and the inductor (L) are connected in series between the output end of the pyroelectric sensor (1121) and the source electrode of the fourteenth PMOS tube (P14), and the grid electrode and the drain electrode of the fourteenth PMOS tube (P14) are both connected to the input end of the storage circuit (1123);

the source of the eleventh NMOS transistor (N11) is connected to the Ground (GND), the gate is connected to the output terminal of the dynamic comparator (Comp), and the drain is connected to the node between the inductor (L) and the source of the fourteenth PMOS transistor (P14) and to the mechanical switch (K);

the first reference voltage source (U1) is connected between the drain of the fourteenth PMOS tube (P14) and the negative input terminal of the dynamic comparator (Comp); the second resistor (R2) and the third resistor (R3) are connected in series between the drain of the fourteenth PMOS tube (P14) and the ground terminal, and the third capacitor (C3) is connected in parallel with the third resistor (R3);

the positive input of the dynamic comparator (Comp) is connected between the second resistor (R2) and the third resistor (R3).

8. A laser treatment apparatus according to claim 7, characterized in that the start-up circuit (1122) further comprises an oscillator (B), wherein the input terminal of the oscillator (B) is connected to the drain of the fourteenth PMOS transistor (P14), and the output terminal of the oscillator (B) is connected to the clock terminal of the dynamic comparator (Comp).

9. Laser treatment apparatus according to any of claims 1 to 8, characterized in that the voltage control module (113) comprises a second reference voltage source (U2), a charging control unit (CONT), a fifteenth PMOS tube (P15), an error amplifier (H1), a fourth resistor (R4), a fifth resistor (R5) and a fourth capacitor (C4), wherein,

the input end of the second reference voltage source (U2) is respectively connected with the source electrode of the fifteenth PMOS tube (P15), the first input end of the charging control module (CONT), the output end of the piezoelectric module (111) and the output end of the thermoelectric module (112), and the output end of the second reference voltage source (U2) is connected with the negative input end of the error amplifier (H1);

the substrate of the fifteenth PMOS tube (P15) is connected with the source electrode thereof, the grid electrode thereof is connected with the output end of the charging control module (CONT), and the drain electrode thereof is used as the output end (Vout3) of the voltage control module (113);

the fourth resistor (R4) and the fifth resistor (R5) are connected in series between the drain of the fifteenth PMOS transistor (P15) and the Ground (GND), and the fourth capacitor (C4) is connected between the drain of the fifteenth PMOS transistor (P15) and the Ground (GND);

a positive input of the error amplifier (H1) is connected at a node between the fourth resistor (R4) and the fifth resistor (R5), and an output of the error amplifier (H1) is connected to a second input of the charging control unit (CONT); a third input end of the charging control unit (CONT) is connected to the drain of the fifteenth PMOS transistor (P15).