阅读说明：本技术 一种直流低频电疗仪 (DC low-frequency electro-therapeutic apparatus ) 是由 梁国恩 欧阳辉满 陆松林 于 2021-09-26 设计创作，主要内容包括：本发明公开了一种直流低频电疗仪,包括控制电路,所述控制电路能够输出中低频脉冲和低频脉冲；分别与所述控制电路电气连接的中低频脉冲电路、低频脉冲电路、接触电路、显示装置、按键和电源充电电路；依次电气连接的所述中低频脉冲电路、驱动电路、隔离升压电路和电流电压保护电路,所述驱动电路和所述中低频脉冲电路驱动所述隔离升压电路工作；所述低频脉冲电路与所述接触电路电气连接；分别与所述接触电路、所述电流电压保护电路电气连接的输出端,所述输出端与人体皮肤接触连接。本发明能够实现稳定输出低频的微电流的功能。(The invention discloses a direct-current low-frequency electro-therapeutic apparatus, which comprises a control circuit, wherein the control circuit can output low-frequency pulses and medium-frequency pulses; the low-medium frequency pulse circuit, the low-frequency pulse circuit, the contact circuit, the display device, the key and the power supply charging circuit are respectively electrically connected with the control circuit; the low-medium frequency pulse circuit, the driving circuit, the isolation booster circuit and the current-voltage protection circuit are electrically connected in sequence, and the driving circuit and the low-medium frequency pulse circuit drive the isolation booster circuit to work; the low-frequency pulse circuit is electrically connected with the contact circuit; and the output end is electrically connected with the contact circuit and the current and voltage protection circuit respectively, and the output end is in contact connection with the skin of a human body. The invention can realize the function of stably outputting low-frequency micro current.)

1. The direct-current low-frequency electro-therapeutic apparatus is characterized by comprising a control circuit, wherein the control circuit can output low-frequency pulses and medium-frequency pulses; the low-medium frequency pulse circuit, the low-frequency pulse circuit, the contact circuit, the display device, the key and the power supply charging circuit are respectively electrically connected with the control circuit; the low-medium frequency pulse circuit, the driving circuit, the isolation booster circuit and the current-voltage protection circuit are electrically connected in sequence, and the driving circuit and the low-medium frequency pulse circuit drive the isolation booster circuit to work; the low-frequency pulse circuit is electrically connected with the contact circuit; and the output end is electrically connected with the contact circuit and the current and voltage protection circuit respectively, and the output end is in contact connection with the skin of a human body.

2. The direct-current low-frequency electro-therapeutic apparatus according to claim 1, wherein the control circuit comprises a control chip, and the control chip is a single chip microcomputer.

3. The direct current low frequency electro-therapeutic apparatus according to claim 2, wherein the model of the control chip is STC8G1K08-TSSOP20, which comprises 20 pins.

4. The direct-current low-frequency electro-therapeutic apparatus according to claim 1, wherein the types of the pulse chips adopted by the low-and-medium-frequency pulse circuit and the low-frequency pulse circuit are both LM 555.

5. The direct-current low-frequency electro-therapeutic apparatus according to claim 1, wherein the isolation voltage-boosting circuit comprises a voltage transformer L1 and a voltage-boosting circuit, two input terminals of the voltage transformer L1 are electrically connected to the low-frequency pulse circuit and the driving circuit respectively, and two output terminals thereof are connected to the voltage-boosting circuit.

6. A direct current low frequency electro-therapeutic apparatus according to claim 5, wherein said voltage boost circuit comprises two capacitors C1, C2 and two diodes D13, D14, the two diodes D13, D14 are connected in series, a capacitor C1 is disposed between said diode D14 and a voltage transformer L1, and a capacitor C2 is disposed between the diode D13 and a diode D14.

7. A DC low frequency electro-therapeutic apparatus as claimed in any one of claims 1 to 6, wherein the display device is an LED display tube, an LED display screen or an LCD display screen.

8. A DC low frequency electro-therapeutic apparatus as claimed in any one of claims 1 to 6, wherein the keys are a plurality of function keys or touch keys.

9. The direct-current low-frequency electro-therapeutic apparatus according to any one of claims 1 to 6, wherein the power charging circuit comprises a charging interface and a power management chip.

10. The direct-current low-frequency electro-therapeutic apparatus according to claim 9, wherein the charging interface is a miniUSB interface, a Micro USB interface, a USB Type C interface or a Lightning interface.

Technical Field

The invention relates to the technical field of electro-therapeutic instruments, in particular to a direct-current low-frequency electro-therapeutic instrument.

Background

In medicine, a pulse current having a frequency of 1000Hz or less is referred to as a low-frequency current or a low-frequency pulse current. The method of treating diseases by applying low-frequency pulse current is called low-frequency electrotherapy, and the treatment mechanism is as follows: the low-frequency current is a physical energy, which causes the change of electrons and ions in the body when acting on the treatment site, mainly generates a physical and chemical reaction on nerve endings, thereby causing a local physiological effect. The physiological effect can activate presynaptic inhibition of spinal cord, block ascending conduction and activate descending pain inhibition system, and cause increase of internal non-peptide and other vascular peptides, thereby playing roles of easing pain, diminishing inflammation, promoting local blood circulation and the like; the dynamic action of the low-frequency pulse current directly stimulates nerve cells to achieve the effects of exercising and recovering functions. The physiological and therapeutic effects of low frequency currents include: exciting neuromuscular tissue; promoting local blood circulation; diminishing inflammation; relieving pain; promoting wound healing; promoting fracture healing, etc.

According to the statistics of the world health organization, the method comprises the following steps: the main reason for this is that the patients who die all over the world are limited by the choice and dosage of the drug because of the complicated factors. Therefore, the search for new safe and effective therapeutic approaches has become an important issue for modern medical workers. Electrotherapy is receiving attention from doctors and patients, and can effectively avoid the insecurity and side effects of medicine administration for patients by treating diseases by using different types of current and electromagnetic fields without the need of conventional internal medicine or medicine injection. Low frequency electrotherapy has become an extremely important means in physiotherapy rehabilitation, and the curative effect is agreed. But most low-frequency rehabilitation therapy instruments have single functions and low safety factors. Due to the series of defects, the low-frequency rehabilitation therapy equipment is difficult to popularize and use in daily life of people (especially in the homes of the general people). Therefore, in view of the defects of the above-mentioned schemes in actual manufacturing and implementation and use, the present invention provides a direct current low frequency electro-therapeutic apparatus, which is modified and improved, and is based on the acquired spirit and concept, assisted by professional knowledge and experience, and created after many times of ingenuity and experiments, so as to solve the above-mentioned problems.

Disclosure of Invention

It is an object of the present invention to provide a dc low frequency electro-therapeutic apparatus, so as to solve the above problems.

The direct-current low-frequency electro-therapeutic apparatus can be realized by the following technical scheme:

the direct-current low-frequency electro-therapeutic apparatus comprises a control circuit, wherein the control circuit can output low-frequency pulses and medium-frequency pulses; the low-medium frequency pulse circuit, the low-frequency pulse circuit, the contact circuit, the display device, the key and the power supply charging circuit are respectively electrically connected with the control circuit; the low-medium frequency pulse circuit, the driving circuit, the isolation booster circuit and the current-voltage protection circuit are electrically connected in sequence, and the driving circuit and the low-medium frequency pulse circuit drive the isolation booster circuit to work; the low-frequency pulse circuit is electrically connected with the contact circuit; and the output end is electrically connected with the contact circuit and the current and voltage protection circuit respectively, and the output end is in contact connection with the skin of a human body.

In one embodiment, the control circuit includes a control chip, and the control chip is a single chip microcomputer.

In one embodiment, the control chip is model STC8G1K08-TSSOP20, which comprises 20 pins.

In one embodiment, the types of the pulse chips adopted by the medium and low frequency pulse circuit and the low frequency pulse circuit are both LM 555.

In one embodiment, the isolation voltage boost circuit comprises a voltage transformer L1 and a voltage boost circuit, two input ends of the voltage transformer L1 are electrically connected with the medium-low frequency pulse circuit and the drive circuit respectively, and two output ends of the voltage transformer are connected with the voltage boost circuit.

In one embodiment, the boost circuit includes two capacitors C1, C2 and two diodes D13, D14, the two diodes D13, D14 are connected in series, a capacitor C1 is disposed between the diode D14 and the voltage transformer L1, and a capacitor C2 is disposed between the diode D13 and the diode D14.

In one embodiment, the display device adopts an LED display tube, an LED display screen or an LCD display screen.

In one embodiment, the keys are a plurality of function keys or touch keys.

In one embodiment, the power charging circuit comprises a charging interface and a power management chip.

In one embodiment, the charging interface is a miniUSB interface, a Micro USB interface, a USB Type C interface, or a Lightning interface.

Compared with the prior art, the direct-current low-frequency electro-therapeutic apparatus has the beneficial effects that:

the direct-current low-frequency electro-therapeutic apparatus can output a low-and-medium-frequency pulse signal through the control circuit and the medium-and-low-frequency pulse circuit, the medium-and-low-frequency pulse circuit and the drive circuit form a drive signal to drive the isolation booster circuit to work and output a stable direct-current positive voltage, when the skin of a human body at the output end is contacted, the direct-current positive voltage is fed back to the control circuit through the output end and the contact circuit through the skin, so that the control circuit outputs a low-frequency pulse signal, and the low-frequency pulse signal output by the low-frequency pulse circuit forms an alternative low-frequency pulse signal, so that the contact circuit is in a conduction state, a complete loop is formed, the function of stably outputting low-frequency micro-current is effectively realized, the presynaptic inhibition of spinal cords can be activated, the uplink conduction is blocked, the downlink pain sensation inhibition system is activated, the increase of internal non-peptides and other vascular peptides is caused, and the analgesia, the pain relieving and the pain are realized, Anti-inflammatory and promoting local blood circulation; directly stimulate nerve cells to achieve the effects of exercising and recovering functions.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic diagram of an electrical connection structure of a DC low-frequency electro-therapeutic apparatus according to the present invention;

FIG. 2 is a circuit diagram of a control circuit in the DC low frequency electro-therapeutic apparatus of FIG. 1;

FIG. 3 is a circuit diagram of a low and medium frequency pulse circuit, a driving circuit, an isolation boosting circuit and a current and voltage protection circuit in the DC low frequency electro-therapeutic apparatus shown in FIG. 1;

FIG. 4 is a circuit diagram of a low frequency pulse circuit and a contact circuit in the DC low frequency electro-therapeutic apparatus of FIG. 1;

fig. 5 is a circuit diagram of a display device in the dc low frequency electro-therapeutic apparatus of fig. 1 according to the present invention;

FIG. 6 is a circuit diagram of a button of the DC low frequency electro-therapeutic apparatus shown in FIG. 1;

fig. 7 is a circuit diagram of a power charging circuit in the dc low frequency electro-therapeutic apparatus of fig. 1.

The following are marked in the figure: 11, a control circuit; 12, a medium-low frequency pulse circuit; 13, a drive circuit; 14, isolating the booster circuit; 15, a current-voltage protection circuit; 16, a low-frequency pulse circuit; 17, contacting the circuit; 18, a display device; 19, a key; 20, a power supply charging circuit; 30 and an output end.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like refer to orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Further, in the present invention, unless otherwise expressly stated or limited, the first feature may be directly contacting the second feature or may be directly contacting the first or second feature with the second feature therebetween. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, the direct current low frequency electro-therapeutic apparatus of the present invention may include a control circuit 11, a low and medium frequency pulse circuit 12, a driving circuit 13, an isolation boosting circuit 14, a current and voltage protection circuit 15, a low frequency pulse circuit 16, a contact circuit 17, a display device 18, a key 19, and a power charging circuit 20; the control circuit 11 is electrically connected with the middle and low frequency pulse circuit 12, the low frequency pulse circuit 16, the contact circuit 17, the display device 18, the key 19 and the power charging circuit 20 respectively; the driving circuit 13 is electrically connected with the low-and-medium frequency pulse circuit 12 and the isolation booster circuit 14 respectively, the low-and-medium frequency pulse circuit 12 outputs low-and-medium frequency pulses, the low-and-medium frequency pulse circuit 12 and the driving circuit 13 drive the isolation booster circuit 14 to work, and the isolation booster circuit 14 is used for isolating and boosting; the isolation booster circuit 14 is electrically connected with the current-voltage protection circuit 15; the low-frequency pulse circuit 16 is electrically connected with the contact circuit 17, and the low-frequency pulse circuit 16 outputs low-frequency pulses; the current and voltage protection circuit 15 and the contact circuit 17 are respectively electrically connected with the output end 30, and the output end 30 can be in contact with the skin of a human body.

Referring to fig. 1 and 2, fig. 2 is a circuit diagram of the control circuit 11, the control circuit 11 includes a control chip, in this embodiment, the control chip is a single chip microcomputer and has 20 pins, specifically, the control chip is of a model STC8G1K08-TSSOP20, a pin 18 of the control chip is electrically connected to the middle and low frequency pulse circuit 12, a pin 17 of the control chip is electrically connected to the low frequency pulse circuit 16, a pin 16 of the control chip is electrically connected to the contact circuit 17, and pins 1, 2, 3, 4, 5, 19, and 20 of the control chip are respectively electrically connected to the display device 18; pins 6, 7 and 9 of the control chip are respectively electrically connected with the key 19; pins 11 and 12 of the control chip are respectively electrically connected with the power charging circuit 20.

Referring to fig. 1 and 3, fig. 3 is a circuit diagram of the low and medium frequency pulse circuit 12, the driving circuit 13, the isolation boosting circuit 14 and the current-voltage protection circuit 15; in this embodiment, the pulse chip U2 used in the middle and low frequency pulse circuit 12 is an LM555, which outputs a middle and low frequency pulse signal; the driving circuit 13 adopts a chip with a U1 model of HM4435B, and a signal formed by the driving circuit and the middle and low frequency pulse circuit 12 drives the isolation boosting circuit 14 to work; the isolation boosting circuit 14 comprises a voltage transformer L1 and a boosting circuit, two input ends of the voltage transformer L1 are respectively electrically connected with the medium-low frequency pulse circuit 12 and the driving circuit 13, two output ends of the voltage transformer L1 are connected with the boosting circuit, the driving circuit 13 is used for isolation coupling, the boosting circuit comprises two capacitors C1 and C2 and two diodes D13 and D14, the two diodes D13 and D14 are connected in series, the capacitor C1 is arranged between the diode D14 and the voltage transformer U, and the capacitor C2 is arranged between the diode D13 and the diode D14; the current-voltage protection circuit 15 includes a diode D5 and a PNP transistor Q3.

Referring to fig. 1 and 4, fig. 4 is a circuit diagram of the low frequency pulse circuit 16 and the contact circuit 17; in this embodiment, the pulse chip U3 used in the low-frequency pulse circuit 16 is an LM555, which outputs a low-frequency pulse signal; the contact circuit 17 includes diodes D12, D15, D16 and transistors Q2, Q6.

Referring to fig. 1 and 5, fig. 5 is a circuit diagram of the display device 18; in the present embodiment, the display device 18 employs an LED display tube, and the LED display tube displays the output pulse frequency; in other embodiments, the display device 18 may also be a display screen, which may be an LED display screen or an LCD display screen.

Referring to fig. 1 and 6, fig. 6 is a circuit diagram of the key 19; the key 19 comprises a plurality of function keys which are respectively and electrically connected with the control circuit 11; in this embodiment, the key 19 includes 3 function keys, and the 3 function keys are respectively electrically connected to the control circuit 11, and in some other embodiments, the key 19 may also be a touch key.

Referring to fig. 1 and 7, fig. 7 is a circuit diagram of the power charging circuit 20; in this embodiment, the power charging circuit 20 includes a charging interface and a power management chip, specifically, the charging interface adopts miniUSB to connect to CN1, and the model of the power management chip is TP 4057; in other embodiments, the charging interface may also adopt a Micro USB interface, a USB Type C interface, or a Lightning interface. The power charging circuit 20 is electrically connected to a rechargeable battery, which may be a lithium ion polymer battery.

It should be noted that, the working process of the direct current low frequency electro-therapeutic apparatus of the present invention is as follows: the control chip in the control circuit 11 outputs a low-and-medium frequency pulse signal, and the low-and-medium frequency pulse signal output by the pulse chip U2 in the low-and-medium frequency pulse circuit 12 forms one of the low-and-medium frequency pulse signals, the low-and-medium frequency pulse circuit 12 and the driving circuit 13 form a driving signal, so that the output low-and-medium frequency pulse signal has a certain amplitude, drives the voltage transformer L1 in the isolation boosting circuit 14 to perform isolation coupling, and then generates a voltage which is several times higher than that of a rechargeable battery through a direct current boosting circuit formed by capacitors C1 and C2 and diodes D13 and D14, and outputs a stable direct current positive voltage at the output end 30 through the protection of a diode D5 and a triode Q3 in the current-voltage protection circuit 15. When the output end 30 is not contacted with the skin of the human body, the control chip in the control circuit 11 does not output; when the output end 30 contacts human skin, the direct current positive voltage of the current-voltage protection circuit 15 is fed back to the skin through the J1 of the output end 30, the direct current positive voltage is fed back to the control circuit 11 through the skin through the J2 of the output end 30 and the Q6 of the contact circuit 17, so that the control chip in the control circuit 11 outputs a low-frequency pulse signal, and the low-frequency pulse signal output by the pulse chip U3 in the low-frequency pulse circuit 16 forms one of low-frequency pulse signals, so that the triodes Q2 and Q6 in the contact circuit 17 are in a conducting state; meanwhile, when the J2 of the output end 30 contacts human skin, a positive voltage is applied to the E level of the triode Q6 and is connected to the ground end through the B level of the triode Q6 in turn through the D15, the D16 and the C level of the triode Q2, so that a complete loop is formed.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.