Median nerve electrical stimulation therapeutic apparatus

Abstract

The utility model discloses a median nerve electrical stimulation therapeutic apparatus, which comprises a detection shell, the wrist strap is connected with the detection shell; the power supply module is arranged in the detection shell; the controller is connected with the power supply module; the output control circuit is connected with the controller; the at least one pair of electrode needles are arranged on the detection shell and are connected with the output control circuit; the treatment intensity adjusting part, the pulse width adjusting part and the on-off ratio adjusting part are connected with the controller; and the controller is used for respectively adjusting the input voltage intensity, pulse width and treatment on-off ratio according to the treatment intensity adjusting part, the pulse width adjusting part and the on-off ratio adjusting part, and controlling the amplitude, pulse width and signal interruption output duration of the stimulation electric signal output by the output control circuit through the electrode needle. The median nerve electrical stimulation therapeutic apparatus is convenient to use, diversified physiotherapy can be carried out according to different conditions of different patients, and the electrical stimulation physiotherapy effect is improved.

Description

Technical Field

[0001] The utility model relates to the field of electrical stimulation therapeutic instruments, in particular to a median nerve electrical stimulation therapeutic instrument. Background Art

[0002] The median nerve is a nerve extending from the arm to the palm, and it occupies a large area in the central innervation area. It is the "doorway" from the periphery to the central nervous system. Electrical stimulation therapy of the median nerve can make the electrical stimulation signal go up through the surface median nerve - spinal nerve - cervical spinal cord - brainstem - thalamus - cortical area, stimulate the electrophysiological activities of neurons at all levels layer by layer, trigger a series of central excitatory effects, awaken the inhibited neurons and the ascending reticular activating system, stimulate the brain to spontaneously secrete neurotrophic factors and neurotransmitters, increase cortical activity and cerebral blood flow, adjust neurons to promote the integration of central structure and function, and finally achieve the effect of awakening from coma; it has the effects of increasing blood flow, increasing brain electrical activity, affecting the secretion of neurotransmitters, and improving the level of wakefulness and awareness. It is safe and effective, and is a new technology for awakening from coma.

[0003] At present, the conventional median nerve electrical stimulation therapeutic devices on the market can only provide a single type of electrical stimulation therapy, which is difficult to meet the diverse needs in practical applications; it also limits the treatment effect to a certain extent. Utility Model Content

[0004] The purpose of the utility model is to provide a median nerve electrical stimulation therapeutic apparatus, which can meet the needs of diversified median nerve electrical stimulation treatments and improve the therapeutic effect.

[0005] In order to solve the above technical problems, the utility model provides a median nerve electrical stimulation therapeutic device, comprising a detection shell; a wristband connected to the detection shell; a power module and a controller built into the detection shell; an output control circuit connected to the controller and the power module; at least one pair of electrode needles arranged on the detection shell and connected to the output control circuit; a treatment intensity adjustment component, a pulse width adjustment component, and an on-off ratio adjustment component arranged on the detection shell and connected to the controller;

[0006] The controller is used to adjust the input voltage intensity, pulse width and treatment on-off ratio according to the treatment intensity adjustment component, the pulse width adjustment component and the on-off ratio adjustment component, respectively, and control the amplitude, pulse width and signal interruption output duration of the stimulation electrical signal output by the output control circuit through the electrode needle.

[0007] In an optional embodiment of the present application, the output control circuit includes a switch circuit and a power supply circuit;

[0008] The switch circuit comprises: a first resistor, a second resistor, a third resistor, a fourth resistor, a first triode, a second triode, a third triode and a fourth triode;

[0009] The first control output end of the controller is connected to the base of the first transistor through the first resistor; the emitter of the first transistor is grounded, and the collector is connected to the first end of the third resistor; the second end of the third resistor is connected to the base of the third transistor; the collector of the third transistor is connected to the first pin of the electrode; the emitter of the third transistor is connected to the output end of the power supply circuit;

[0010] The second control output terminal of the controller is connected to the base of the second transistor through the second resistor; the emitter of the second transistor is grounded, and the collector is connected to the first end of the fourth resistor; the second end of the fourth resistor is connected to the base of the fourth transistor; the collector of the fourth transistor is connected to the second pin of the electrode; the emitter of the fourth transistor is connected to the output terminal of the power supply circuit;

[0011] Wherein, the first electrode pin and the second electrode pin are electrically connected to the two electrode needles respectively;

[0012] The first control output terminal and the second control output terminal of the controller output corresponding first PWM signals and second PWM signals respectively; and the first control output terminal and the second control output terminal of the controller do not output high level signals at the same time;

[0013] Wherein, the controller is used to adjust the pulse width of the first PWM signal and the second PWM signal according to the pulse width input by the pulse width adjustment component;

[0014] The controller is used to control the interrupt output duration of the first PWM signal and the second PWM signal according to the treatment on-off ratio input by the on-off ratio adjustment component.

[0015] In an optional embodiment of the present application, the power supply circuit includes a fifth resistor, a fifth transistor, an inductor, a first capacitor, a second capacitor, a first diode, and a second diode;

[0016] The first end of the fifth resistor and the first end of the first capacitor are connected to the third control output end of the controller; the second end of the fifth resistor and the second end of the first capacitor are connected to the base of the fifth transistor; the emitter of the fifth transistor is grounded, and the collector is connected to the first end of the inductor element and the anode of the first diode; the second end of the inductor element is connected to the DC output end of the power module; the cathode of the first diode is connected to the anode of the second diode; the cathode of the second diode is grounded through the second capacitor; and the cathode of the second diode serves as the output end of the power supply circuit;

[0017] The controller is used for outputting a third PWM signal with different duty cycles through a third control output terminal of the controller according to different voltage intensities input by the treatment intensity adjustment component.

[0018] In an optional embodiment of the present application, a shedding detection circuit is further included; the shedding detection circuit includes a sixth resistor, a seventh resistor, an eighth resistor, a sixth transistor, a seventh transistor and a third diode;

[0019] The base of the sixth transistor is connected to the collector of the first transistor through the sixth resistor; the emitter of the sixth transistor is connected to the second pin of the electrode; the collector of the sixth transistor is connected to the cathode of the third diode;

[0020] The base of the seventh transistor is connected to the collector of the second transistor through the seventh resistor; the emitter of the seventh transistor is connected to the first electrode pin; the collector of the seventh transistor is connected to the cathode of the third diode;

[0021] The first end of the eighth resistor and the cathode of the third diode are both connected to the input end of the controller; the second end of the eighth resistor and the anode of the third diode are grounded together.

[0022] In an optional embodiment of the present application, the end of the electrode needle protrudes from the detection housing by a set height.

[0023] In an optional embodiment of the present application, the set height is 1.4 mm to 1.6 mm.

[0024] In an optional embodiment of the present application, the relative distance between each pair of electrode needles is adjustable.

[0025] In an optional embodiment of the present application, the treatment intensity adjustment component, the pulse width adjustment component and the on-off ratio adjustment component are all knob components.

[0026] In an optional embodiment of the present application, the detection housing is also provided with a charging port connected to the power module.

[0027] In an optional embodiment of the present application, the length of the wristband is adjustable.

[0028] The median nerve electrical stimulation therapeutic device provided by the utility model comprises a detection shell; a wristband connected to the detection shell; a power module built into the detection shell; a controller connected to the power module; an output control circuit connected to the controller; at least one pair of electrode needles arranged on the detection shell and connected to the output control circuit; a treatment intensity adjustment component, a pulse width adjustment component, and an on-off ratio adjustment component arranged on the detection shell and connected to the controller; the controller is used to adjust the input voltage intensity, pulse width and treatment on-off ratio according to the treatment intensity adjustment component, the pulse width adjustment component and the on-off ratio adjustment component, respectively, and control the amplitude, pulse width and signal interruption output duration of the stimulation electric signal output by the output control circuit through the electrode needle.

[0029] The median nerve electrical stimulation therapeutic device in the present application encapsulates structures including a power module, a controller, and an output control circuit inside a detection shell, and a wristband is connected to the shell, so that the median nerve electrical stimulation therapeutic device can be conveniently fixed to any position of the entire arm including the wrist. Even if the user moves around at will, it will not affect the electrical stimulation treatment process, which greatly improves the convenience of using the therapeutic device; on this basis, a variety of different adjustment components such as intensity adjustment components, pulse width adjustment components, and on-off ratio adjustment components are further provided on the detection shell, which can perform diversified adjustment and control on the amplitude, pulse width and signal interruption output duration of the electrical stimulation signal output by the electrode needle, so that in actual treatment, diversified physical therapy can be performed for different conditions of different patients, thereby improving the physical therapy effect; in particular, the on-off ratio adjustment component is configured to adjust the interruption output duration of the electrical stimulation signal, thereby realizing the interruption control of the interfering electrical signal, further improving the electrical stimulation physical therapy effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A schematic diagram of the structure of the median nerve electrical stimulation therapeutic apparatus provided in an embodiment of the present application;

[0032] Figure 2A schematic diagram of the back structure of the detection housing in the median nerve electrical stimulation therapeutic device provided in an embodiment of the present application;

[0033] Figure 3 A schematic diagram of the structure of an output control circuit provided in an embodiment of the present application;

[0034] Figure 4 A schematic diagram of the waveforms of the PWM control signal and the stimulation electrical signal output by the controller according to an embodiment of the present application changing with time. DETAILED DESCRIPTION

[0035] The core of the utility model is to provide a median nerve electrical stimulation therapeutic apparatus, which can provide users with a more convenient physical therapy method and can achieve more diverse physical therapy treatments.

[0036] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0037] like Figure 1 and Figure 2 As shown, Figure 1 A schematic diagram of the structure of the median nerve electrical stimulation therapeutic apparatus provided in an embodiment of the present application; Figure 2 This is a schematic diagram of the back structure of the detection shell in the median nerve electrical stimulation therapeutic device provided in an embodiment of the present application.

[0038] In a specific embodiment of the present application, the median nerve electrical stimulation therapeutic apparatus may specifically include:

[0039] Detection housing 1; wristband 2 connected to detection housing 1; power module and controller built into detection housing 1; output control circuit connected to controller and power module; at least one pair of electrode needles 3 arranged on detection housing 1 and connected to output control circuit; treatment intensity adjustment element 4, pulse width adjustment element 5, on-off ratio adjustment element 6 arranged on detection housing 1 and connected to controller;

[0040] The controller is used to adjust the input voltage intensity, pulse width and treatment on-off ratio according to the treatment intensity adjustment component 4, pulse width adjustment component 5 and on-off ratio adjustment component 6, and control the amplitude, pulse width and signal interruption output duration of the stimulation electrical signal output by the output control circuit through the electrode needle 3.

[0041] like Figure 1 and Figure 2As shown, in this embodiment, the power module, controller, and output control circuit are built into the detection housing 1 to form the main structure of the electrical stimulation therapeutic device; at the same time, a wristband 2 is also provided on the detection housing 1, so that the detection housing 1 and the wristband 2 together form a structure similar to a watch, which can be conveniently worn on the patient's arm, wrist, etc. Of course, the wristband 2 connected to the detection housing 1 can be a wristband 2 with adjustable length, so that it can be worn on the limbs of different patients.

[0042] Moreover, the detection housing 1 in this embodiment has a built-in power module, so there is no need for an additional external power supply, and even if the patient moves at will, it does not affect the treatment of the stimulation electrical signal. In addition, the power module can be a rechargeable power supply, and a charging port 7 electrically connected to the power module can be provided on the detection housing 1. The charging port 7 can specifically be a Typc port, a USB port or other types of charging ports 7, which are not specifically limited in this embodiment.

[0043] In addition, the electrode needle 3 disposed on the detection housing 1 should be the surface of the detection housing 1 that is in contact with the patient's skin. Figure 2 In the embodiment shown, only one pair of electrode needles 3 is shown. In practical applications, it is not excluded that a plurality of electrode needles 3 are provided on the detection housing 1, so as to treat a plurality of different acupuncture points together. In order to better stimulate the median nerve trunk, the electrode needle 3 can protrude from the surface of the detection housing 1 to a set height. Specifically, the electrode needle 3 can protrude from the surface of the detection housing 1 by 1.4 mm, 1.5 mm, 1.6 mm, etc.; generally about 1.5 mm is sufficient.

[0044] In addition, it is further considered that in actual applications, when the median nerve electrical stimulation therapeutic apparatus is treating different patients or treating different positions on the patient's arm, the positions of the acupoints that need to be stimulated may be different. Accordingly, the spacing between the electrode needles 3 is also required to be different. For this reason, in an optional embodiment of the present embodiment, a structure that enables the electrode needles 3 to be movable can be provided on the detection shell 1, so that the relative distance between the two electrode needles 3 in each pair of electrode needles 3 can be movable and changed, thereby meeting the user's diverse treatment needs.

[0045] On this basis, a treatment intensity adjustment component 4, a pulse width adjustment component 5 and an on-off ratio adjustment component 6 are also provided on the outer surface of the detection shell 1, which can adjust the electrical stimulation signal output by the electrode needle 3 in different output modes, thereby realizing diversified treatment.

[0046] It should be noted that in this embodiment, the stimulation electrical signal output by each pair of electrode needles 3 is a pulse signal with alternating positive and negative changes. On this basis, the treatment intensity adjustment element 4 is used to input the voltage intensity, specifically the voltage amplitude of the stimulation electrical signal; the pulse width adjustment element 5 is used to adjust the input pulse width, that is, the pulse width of the stimulation electrical signal; and the on-off ratio adjustment element 6 is used to input the interruption output duration of the stimulation electrical signal interruption output.

[0047] Among them, the voltage amplitude of the stimulation electrical signal determines its stimulation intensity to the median nerve; the larger the voltage amplitude of the stimulation electrical signal, the greater the stimulation intensity; thus, the voltage amplitude of the stimulation electrical signal output by the electrode needle 3 can be adjusted according to the different patient conditions of the patient. In practical applications, multiple gears of the voltage amplitude can be set, and the user can adjust the gear of the voltage amplitude through the treatment intensity adjustment member 4, that is, select the voltage amplitude of the input stimulation electrical signal. The controller can output a corresponding control signal to the output control circuit according to the voltage amplitude selected by the user, so that the output control circuit finally controls the electrode needle 3 to output a stimulation electrical signal of the corresponding voltage amplitude.

[0048] The pulse width of the stimulation electrical signal determines the output power of the stimulation electrical signal; similarly, in practical applications, a plurality of pulse width gears with different gears can be pre-set, so that when the user selects to input a suitable pulse width gear through the pulse width adjustment component 5, the controller can also output a corresponding control signal to the output control circuit, so that the electrode needle 3 outputs a stimulation electrical signal with a corresponding pulse width.

[0049] It can be understood that the voltage amplitude and pulse width of the stimulation electrical signal in this embodiment are two different characteristics that can be adjusted independently; in practical applications, based on the patient's actual condition, different voltage amplitudes and pulse widths can be used in combination with stimulation electrical signal treatment, thereby improving the physical therapy effect to a certain extent.

[0050] On this basis, in this embodiment, it is considered that in the process of stimulating electrical signal output, there will inevitably be interference electrical signals; for this reason, every time the stimulating electrical signal is continuously output for a period of time, the output of the stimulating electrical signal is interrupted for a period of time, and then the stimulating electrical signal is continuously output for a period of time again, and the interval between the end time of the last continuous output of the stimulating electrical signal and the start time of the next continuous output is the signal interruption output duration; in practical applications, the on-off ratio of multiple different gears can be pre-set, and the on-off ratio is the ratio between the duration of continuous output of the stimulating electrical signal and the duration of interruption output. When the user selects a gear with a suitable on-off ratio through the on-off ratio adjustment member 6, the controller can output the signal interruption output duration of the stimulating electrical signal according to the on-off ratio gear corresponding to the on-off ratio gear.

[0051] As described above, the treatment intensity adjustment member 4, the pulse width adjustment member 5 and the on-off ratio adjustment member 6 in this embodiment can all be gear adjustment members. Therefore, in actual applications, the above three adjustment members can all adopt knobs, buttons or toggle members, which is not specifically limited in this embodiment.

[0052] Based on the above discussion, the overall structure of the median nerve electrical stimulation therapeutic device in this embodiment is similar to that of a wristwatch, which is convenient for patients to wear, and a power module is built into the detection shell 1, thereby eliminating the need for an external power supply, further improving the convenience of using the therapeutic device; in addition, in this embodiment, three adjustment keys, namely a treatment intensity adjustment member 4, a pulse width adjustment member 5 and an on-off ratio adjustment member 6, are further provided on the detection shell 1 to achieve adjustment of three different characteristics of the stimulation electrical signal. During the specific treatment process, the user can optionally adjust the characteristics of the stimulation electrical signal according to the patient's condition to achieve more diversified treatment of the stimulation electrical signal, thereby improving the treatment effect to a certain extent.

[0053] Based on the above embodiments, Figure 3 As shown, in an optional embodiment of the present application, the output control circuit in the median nerve electrical stimulation therapeutic apparatus may include:

[0054] A switch circuit 30 and a power supply circuit 31;

[0055] The switch circuit 30 includes: a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first transistor Q1, a second transistor Q2, a third transistor Q3 and a fourth transistor Q4;

[0056] The first control output terminal PA1 of the controller is connected to the base of the first transistor Q1 through the first resistor R1; the emitter of the first transistor Q1 is grounded, and the collector is connected to the first end of the third resistor R3; the second end of the third resistor R3 is connected to the base of the third transistor Q3; the collector of the third transistor Q3 is connected to the first pin of the electrode; the emitter of the third transistor Q3 is connected to the output end of the power supply circuit 31;

[0057] The second control output terminal PA2 of the controller is connected to the base of the second transistor Q2 through the second resistor R2; the emitter of the second transistor Q2 is grounded, and the collector is connected to the first end of the fourth resistor R4; the second end of the fourth resistor R4 is connected to the base of the fourth transistor Q4; the collector of the fourth transistor Q4 is connected to the second pin of the electrode; the emitter of the fourth transistor Q4 is connected to the output end of the power supply circuit 31;

[0058] The first electrode pin and the second electrode pin are electrically connected to the two electrode needles 3 respectively;

[0059] The first control output terminal PA1 and the second control output terminal PA2 of the controller output corresponding first PWM signals and second PWM signals respectively; and the first control output terminal PA1 and the second control output terminal PA2 of the controller do not output high level signals at the same time;

[0060] The controller is used to adjust the pulse width of the first PWM signal and the second PWM signal according to the pulse width input by the pulse width adjustment element 5;

[0061] The controller is used to control the interrupt output duration of the first PWM signal and the second PWM signal according to the treatment on-off ratio input by the on-off ratio adjustment component 6.

[0062] like Figure 3 As shown, in Figure 3 In the illustrated embodiment, the first transistor Q1 and the second transistor Q2 are both NPN transistors, and the third transistor Q3 and the fourth transistor Q4 are PNP transistors.

[0063] When the first control output terminal PA1 of the controller outputs a high level signal, the first transistor Q1 is turned on, the base of the third transistor Q3 is grounded, and the third transistor Q3 is turned on, that is, the emitter and the collector of the third transistor Q3 are turned on, and the emitter of the third transistor Q3 is connected to the output end of the power supply circuit 31, and the collector is connected to the first pin of the electrode, thereby realizing the connection between the first pin of the electrode and the power supply circuit 31. At this time, the first pin of the electrode can also output the voltage signal output by the power supply circuit 31 through the connected electrode needle 3.

[0064] When the first control output terminal PA1 of the controller outputs a low level signal, the first transistor Q1 and the third transistor Q3 are both cut off, that is, the emitter and the collector of the third transistor Q3 are disconnected, and the first pin of the electrode is also disconnected from the power supply circuit 31, and the voltage output by the electrode needle 3 corresponding to the first pin of the electrode is 0.

[0065] Similarly, when the second control output terminal PA2 of the controller outputs a high-level signal, the second transistor Q2 and the fourth transistor Q4 can also be turned on in sequence, and finally the second pin of the electrode and the power supply circuit 31 are turned on, and the electrode needle 3 corresponding to the second pin of the electrode can also output the voltage signal output by the power supply circuit 31.

[0066] When the second control output terminal PA2 of the controller outputs a low level signal, the voltage output by the electrode needle 3 corresponding to the second pin of the electrode is also 0.

[0067] It is understandable that, in actual physical therapy treatment, there should be a voltage difference between the two electrode needles 3 of each pair of electrode needles 3 to form a stimulation current in human tissue, thereby achieving electrical stimulation physical therapy for the median nerve.

[0068] For this reason, Figure 4 As shown, the controller in this embodiment controls the first control output terminal PA1 and the second control output terminal PA2 to alternately output high-level signals in different time periods; in the ∆t1 time segment, the first control output terminal PA1 of the controller outputs a high level, and the electrode needle 3 connected to the corresponding first pin of the electrode also outputs the voltage signal provided by the power supply circuit 31; and in the ∆t2 time segment, the second control output terminal PA2 of the controller outputs a high level, and the electrode needle 3 connected to the corresponding second pin of the electrode also outputs the voltage signal provided by the power supply circuit 31.

[0069] Figure 4 The output voltage shown in is the voltage difference between the first electrode pin and the second electrode pin. Obviously, when the voltage of the first electrode pin is greater than the voltage of the second electrode pin, the output voltage is positive; when the voltage of the first electrode pin is less than the voltage of the second electrode pin, the output voltage is negative; thus, the stimulation electrical signal output between the pair of electrode needles 3 connected to the first electrode pin and the second electrode pin is Figure 4 The output voltage is shown in .

[0070] As described above, the voltage amplitude of the stimulation electrical signal ultimately output by each pair of electrode needles 3 essentially depends on the power supply voltage output by the power supply circuit 31. Therefore, when the user inputs the corresponding voltage amplitude gear through the treatment intensity adjustment component 4, the controller can output a corresponding control signal to the power supply circuit 31 to control the power supply circuit 31 to adjust the power supply voltage it outputs.

[0071] When the user inputs the corresponding pulse width gear through the pulse width adjustment element 5, the controller only needs to adjust the pulse widths corresponding to the first PWM signal and the second PWM signal outputted from the first control output terminal PA1 and the second control output terminal PA2 respectively to the pulse widths selected by the user.

[0072] When the user inputs the corresponding treatment on-off ratio through the on-off ratio adjustment element 6, the controller only needs to control the duration of the first control output terminal PA1 and the second control output terminal PA2 to interrupt output of the first PWM signal and the second PWM signal according to the treatment on-off ratio.

[0073] Based on the above discussion, in order to adjust the power supply voltage provided by the power supply circuit 31, in another optional embodiment of the present embodiment, the power supply circuit 31 may specifically include:

[0074] A fifth resistor R5, a fifth transistor Q5, an inductor L, a first capacitor C1, a second capacitor C2, a first diode D1, and a second diode D2;

[0075] The first end of the fifth resistor R5 and the first end of the first capacitor C1 are connected to the third control output terminal PA3 of the controller; the second end of the fifth resistor R5 and the second end of the first capacitor C1 are connected to the base of the fifth transistor Q5; the emitter of the fifth transistor Q5 is grounded, and the collector is connected to the first end of the inductor element and the anode of the first diode D1; the second end of the inductor element is connected to the DC output terminal VCC of the power module; the cathode of the first diode D1 is connected to the anode of the second diode D2; the cathode of the second diode D2 is grounded through the second capacitor C2; and the cathode of the second diode D2 serves as the output end of the power supply circuit 31;

[0076] The controller is used for outputting a third PWM signal with different duty cycles through the third control output terminal PA3 of the controller according to different voltage intensities input by the treatment intensity adjustment element 4 .

[0077] like Figure 3 As shown, in Figure 3 In the illustrated embodiment, the inductor L and the fifth transistor Q5 form a boost circuit; when the third control output terminal PA3 of the controller is at a high level, the fifth transistor Q5 is turned on and the inductor L is charged; when the third control output terminal PA3 of the controller is at a low level, the energy stored in the inductor L is released and discharged through the first diode D1 and the second diode D2, and the DC output terminal of the power module also outputs the discharge; obviously, in each charge and discharge cycle, the longer the charging time of the inductor is, the larger the supply voltage output through the cathode of the second diode D2 during discharge; thus, the magnitude of the supply voltage can be adjusted by controlling the on-time ratio of the fifth transistor Q5 through the third PWM signal output by the controller, and the on-time ratio of the fifth transistor Q5 can be achieved by controlling the duty cycle of the third PWM signal.

[0078] In addition, the present application further considers that in the actual physical therapy treatment process, the electrode needle 3 may inevitably fall off the human skin accidentally, and if the electrode needle 3 keeps outputting the stimulation electrical signal when it contacts the human skin again after falling off, it may cause adverse consequences. For this reason, in another optional embodiment of the present application, a fall-off detection circuit 32 may be further provided on the basis of the above-mentioned switch circuit 30 and power supply circuit 31; the fall-off detection circuit 32 may include:

[0079] a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a sixth transistor Q6, a seventh transistor Q7 and a third diode D3;

[0080] The base of the sixth transistor Q6 is connected to the collector of the first transistor Q1 through the sixth resistor R6; the emitter of the sixth transistor Q6 is connected to the second electrode pin; the collector of the sixth transistor Q6 is connected to the cathode of the third diode D3;

[0081] The base of the seventh transistor Q7 is connected to the collector of the second transistor Q2 through the seventh resistor R7; the emitter of the seventh transistor Q7 is connected to the first electrode pin; the collector of the seventh transistor Q7 is connected to the cathode of the third diode D3;

[0082] The first end of the eighth resistor R8 and the cathode of the third diode D3 are both connected to the input terminal P4 of the controller; the second end of the eighth resistor R8 and the anode of the third diode D3 are grounded together.

[0083] like Figure 3 As shown, in Figure 3 In the illustrated embodiment, the sixth transistor Q6 and the seventh transistor Q7 are both NPN transistors.

[0084] When the first control output terminal PA1 of the controller outputs a high level and the second control output terminal PA2 outputs a low level, the voltage of the first pin of the electrode is greater than the voltage of the second pin of the electrode; at this time, the sixth transistor Q6 is turned on and the seventh transistor Q7 is turned off; and the emitter of the sixth transistor Q6 is connected to the second pin of the electrode, and the collector is connected to the cathode of the third diode D3.

[0085] When a pair of electrode needles 3 connected to the first electrode pin and the second electrode pin are not detached, that is, a path is formed between the first electrode pin and the second electrode pin, at this time, the cathode voltage of the third diode D3 is greater than the anode grounding voltage, and the controller can measure the current signal through the input terminal P4; and when a pair of electrode needles 3 connected to the first electrode pin and the second electrode pin are detached, that is, the first electrode pin and the second electrode pin are disconnected, the controller cannot measure the current signal through the input terminal P4; therefore, the controller can determine whether the electrode needle 3 is detached according to whether its input terminal P4 can measure the current signal.

[0086] Similarly, when the first control output terminal PA1 of the controller outputs a low level and the second control output terminal PA2 outputs a high level, the voltage of the first pin of the electrode is less than the voltage of the second pin of the electrode; at this time, the seventh transistor Q7 is turned on and the sixth transistor Q6 is turned off; and the emitter of the seventh transistor Q7 is connected to the first pin of the electrode, and the collector is connected to the cathode of the third diode D3.

[0087] Obviously, at this time, if the pair of electrode needles 3 connected to the first electrode pin and the second electrode pin have not fallen off, the controller can also measure the current signal through the input terminal P4; and if the pair of electrode needles 3 connected to the first electrode pin and the second electrode pin are fallen off, the controller cannot measure the current signal through the input terminal P4; the controller can also determine whether the electrode needle 3 is fallen off based on whether its input terminal P4 can measure the current signal.

[0088] To summarize, the median nerve electrical stimulation therapeutic device in the present application encapsulates structures including a power module, a controller, and an output control circuit inside a detection shell, and connects a wristband to the detection shell to facilitate fixing the median nerve electrical stimulation therapeutic device at any position of the entire arm including the wrist, and to perform electrical stimulation therapy at any time, thereby improving the convenience of using the therapeutic device; an intensity adjustment component, a pulse width adjustment component 5, and an on-off ratio adjustment component are also provided on the detection shell, which can perform diversified adjustment and control on the amplitude, pulse width, and signal interruption output duration of the electrical stimulation signal output by the electrode needle, so that in actual treatment, diversified physical therapy can be performed for different conditions of different patients, thereby improving the physical therapy effect; in particular, the on-off ratio adjustment component is configured to regulate the interruption output duration of the electrical stimulation signal, thereby realizing the interruption control of the interfering electrical signal, thereby further improving the electrical stimulation physical therapy effect.

[0089] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the term "includes", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment comprising a series of elements are inherent to the elements. In the absence of more restrictions, the elements limited by the sentence "comprising one..." do not exclude the presence of other identical elements in the process, method, article or equipment comprising the elements. In addition, the above-mentioned technical solution provided in the embodiment of the present application is consistent with the corresponding technical solution in the prior art in principle, and the part is not described in detail, so as to avoid too much redundancy.

[0090] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A median nerve electrical stimulation therapeutic apparatus, characterized in that: The invention comprises a detection shell; a wristband connected to the detection shell; a power module and a controller built into the detection shell; an output control circuit connected to the controller and the power module; at least one pair of electrode needles arranged on the detection shell and connected to the output control circuit; a treatment intensity adjustment component, a pulse width adjustment component, and an on-off ratio adjustment component arranged on the detection shell and connected to the controller; The controller is used to adjust the input voltage intensity, pulse width and treatment on-off ratio according to the treatment intensity adjustment component, the pulse width adjustment component and the on-off ratio adjustment component, respectively, and control the amplitude, pulse width and signal interruption output duration of the stimulation electrical signal output by the output control circuit through the electrode needle.

2. The median nerve electrical stimulation therapeutic apparatus according to claim 1, characterized in that: The output control circuit includes a switch circuit and a power supply circuit; The switch circuit comprises: a first resistor, a second resistor, a third resistor, a fourth resistor, a first triode, a second triode, a third triode and a fourth triode; The first control output end of the controller is connected to the base of the first transistor through the first resistor; the emitter of the first transistor is grounded, and the collector is connected to the first end of the third resistor; the second end of the third resistor is connected to the base of the third transistor; the collector of the third transistor is connected to the first pin of the electrode; the emitter of the third transistor is connected to the output end of the power supply circuit; The second control output terminal of the controller is connected to the base of the second transistor through the second resistor; the emitter of the second transistor is grounded, and the collector is connected to the first end of the fourth resistor; the second end of the fourth resistor is connected to the base of the fourth transistor; the collector of the fourth transistor is connected to the second pin of the electrode; the emitter of the fourth transistor is connected to the output terminal of the power supply circuit; Wherein, the first electrode pin and the second electrode pin are electrically connected to the two electrode needles respectively; The first control output terminal and the second control output terminal of the controller output corresponding first PWM signals and second PWM signals respectively; and the first control output terminal and the second control output terminal of the controller do not output high level signals at the same time; Wherein, the controller is used to adjust the pulse width of the first PWM signal and the second PWM signal according to the pulse width input by the pulse width adjustment component; The controller is used to control the interrupt output duration of the first PWM signal and the second PWM signal according to the treatment on-off ratio input by the on-off ratio adjustment component.

3. The median nerve electrical stimulation therapeutic apparatus according to claim 2, characterized in that: The power supply circuit includes a fifth resistor, a fifth transistor, an inductor, a first capacitor, a second capacitor, a first diode, and a second diode; The first end of the fifth resistor and the first end of the first capacitor are connected to the third control output end of the controller; the second end of the fifth resistor and the second end of the first capacitor are connected to the base of the fifth transistor; the emitter of the fifth transistor is grounded, and the collector is connected to the first end of the inductor element and the anode of the first diode; the second end of the inductor element is connected to the DC output end of the power module; the cathode of the first diode is connected to the anode of the second diode; the cathode of the second diode is grounded through the second capacitor; and the cathode of the second diode serves as the output end of the power supply circuit; The controller is used for outputting a third PWM signal with different duty cycles through a third control output terminal of the controller according to different voltage intensities input by the treatment intensity adjustment component.

4. The median nerve electrical stimulation therapeutic apparatus according to claim 2 or 3, characterized in that: It also includes a shedding detection circuit; the shedding detection circuit includes a sixth resistor, a seventh resistor, an eighth resistor, a sixth triode, a seventh triode and a third diode; The base of the sixth transistor is connected to the collector of the first transistor through the sixth resistor; the emitter of the sixth transistor is connected to the second pin of the electrode; the collector of the sixth transistor is connected to the cathode of the third diode; The base of the seventh transistor is connected to the collector of the second transistor through the seventh resistor; the emitter of the seventh transistor is connected to the first electrode pin; the collector of the seventh transistor is connected to the cathode of the third diode; The first end of the eighth resistor and the cathode of the third diode are both connected to the input end of the controller; the second end of the eighth resistor and the anode of the third diode are grounded together.

5. The median nerve electrical stimulation therapeutic apparatus according to claim 1, characterized in that: The end of the electrode needle protrudes from the detection housing to a set height.

6. The median nerve electrical stimulation therapeutic apparatus according to claim 5, characterized in that: The set height is 1.4 mm to 1.6 mm.

7. The median nerve electrical stimulation therapeutic apparatus according to claim 1, characterized in that: The relative distance between each pair of electrode needles is adjustable.

8. The median nerve electrical stimulation therapeutic apparatus according to claim 1, characterized in that: The treatment intensity adjustment component, the pulse width adjustment component and the on-off ratio adjustment component are all knob components.

9. The median nerve electrical stimulation therapeutic apparatus according to claim 1, characterized in that: The detection housing is also provided with a charging port connected to the power module.

10. The median nerve electrical stimulation therapeutic apparatus according to claim 1, characterized in that: The length of the wrist strap is adjustable.

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