CN210785993U

CN210785993U - Portable biofeedback and electric stimulation therapeutic instrument

Info

Publication number: CN210785993U
Application number: CN201920760949.XU
Authority: CN
Inventors: 刘咏梅
Original assignee: Shenzhen Kangmeisheng Technology Co ltd
Current assignee: Shenzhen Kangmeisheng Technology Co ltd
Priority date: 2019-05-24
Filing date: 2019-05-24
Publication date: 2020-06-19
Anticipated expiration: 2029-05-24

Abstract

The utility model discloses a portable biofeedback and electrical stimulation therapeutic instrument, which comprises a host, an electrode plate and a probe, wherein the electrode plate and the probe are connected with the host; the display screen is fixed in or on the inner shell; the outer shell is of an integrally formed structure and is sleeved outside the inner shell to restrain the inner shell from transversely separating. The utility model provides a portable biofeedback and electrical stimulation therapeutic instrument which is portable, has better integrity, is convenient to use and is not easy to damage.

Description

Portable biofeedback and electric stimulation therapeutic instrument

Technical Field

The utility model relates to a portable therapeutic instrument especially relates to a portable biofeedback and electric stimulation therapeutic instrument.

Background

The myoelectric signal is a weak electric signal with different strengths generated by human muscle under the condition of relaxation or contraction, the weak myoelectric signal generated by the muscle during autonomous contraction is collected and amplified, myoelectric data is obtained after processing and analysis, the data is fed back and converted into a signal or a reading which is easy to understand, such as visual information displayed on a screen, and by utilizing the information, training is carried out under the guidance of medical personnel, so that patients learn to utilize the processed signal of the patient, various physiological and pathological processes in the body are consciously controlled, and the function recovery is promoted, thereby achieving the purpose of treating diseases. For example, the muscle energy of a certain part of a human body is reduced due to cerebral apoplexy, and the muscle energy needs to be exercised to restore the original strength; the simulation biological myoelectric signal is generated in a certain control mode to carry out rehabilitation training on the damaged muscle, and the original strength and toughness are recovered or the muscle is stronger. For another example, the body shape of the female is changed during pregnancy, and the original body shape is restored by combining electrical stimulation exercise; the pelvic floor muscle is damaged during pregnancy of female, so that postpartum urinary incontinence, cystocele or mild uterine prolapse, and lack of sensitivity can be measured by myoelectric evaluation for the strength of the pelvic floor muscle and treated by electric stimulation.

The electric stimulation therapeutic apparatus that has market selling now, general overall structure is complicated, the form is great, is unfavorable for carrying, and a lot of patients are in the use in addition, because the etiology, for example apoplexy patient, the hand is inflexible, and the therapeutic apparatus drops and causes the damage.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to prior art's defect, provide a portable, better, the facilitate use of wholeness, not fragile portable biofeedback and electric stimulation therapeutic instrument.

The utility model provides a technical scheme that its technical problem adopted is:

a portable biofeedback and electric stimulation therapeutic apparatus comprises a host, an electrode plate and a probe, wherein the electrode plate and the probe are connected with the host; the display screen is fixed in or on the inner shell; the outer shell is of an integrally formed structure and is sleeved outside the inner shell to restrain the inner shell from transversely separating.

Furthermore, in the portable biofeedback and electrical stimulation therapeutic apparatus, preferably, the outer shell is sleeved on the whole of the inner shell, and openings are arranged at the position corresponding to the display screen, the data transmission interface and the charging interface;

or the outer shell is sleeved on and covers at least one of the upper part, the middle part and the lower part of the inner shell, and openings are arranged corresponding to the display screen, the data transmission interface and the charging interface.

Further, in the portable biofeedback and electrical stimulation treatment instrument, the housing preferably comprises an integrally formed upper housing and an integrally formed lower housing, and the upper housing and the lower housing are detachably and fixedly connected together.

Furthermore, in the portable biofeedback and electrical stimulation therapeutic apparatus, preferably, the display screen is fixed on a circuit board through a mounting bracket, the mounting bracket is provided with supporting legs, and the periphery of the circuit board is provided with connecting holes;

the shape of the supporting leg is matched with that of the connecting hole, and the supporting leg is tightly matched and inserted in the connecting hole to fix the mounting bracket;

or the inner wall surface of the connecting hole is provided with a clamp position, the outer side wall of the landing leg is provided with a clamp head, and the clamp head is clamped into the clamp position of the connecting hole to fixedly connect the landing leg and the connecting hole together;

or the front end of the supporting leg is provided with a positioning head, and after the supporting leg elastically deforms and penetrates through the connecting hole, the positioning head is pressed against or hooked on the peripheral wall surface of the connecting hole.

Further, in the portable biofeedback and electrical stimulation therapeutic apparatus, preferably, the outer casing is sleeved on at least one of the upper portion, the middle portion and the lower portion of the inner casing, and openings are formed in the positions corresponding to the display screen, the data transmission interface and the charging interface.

Furthermore, in the portable biofeedback and electrical stimulation therapeutic apparatus, preferably, the outer shell is an elastically deformable structure made of a soft material and covers the control key extending out of the inner shell;

or at least one of the upper part, the middle part and the lower part of the outer shell is provided with an elastically deformable soft key which corresponds to the control key extending out of the inner shell, and all the soft keys are integrally formed to form an integral structure.

Further, in the portable biofeedback and electrical stimulation therapeutic apparatus, preferably, at least four corners of the outer shell are provided with hollow protrusions, the hollow portions of the protrusions correspond to and accommodate the four corners of the inner shell, and gaps are reserved between the four corners of the inner shell and inner walls of the protrusions.

Further, in the portable biofeedback and electrical stimulation treatment instrument, at least the upper part, the middle part or the lower part of the housing is preferably provided with a holding part, and the shape of the holding part is matched with the shape of the palm or/and the fingers so as to be convenient to hold.

Further, in the portable biofeedback and electrical stimulation treatment instrument, it is preferable that the grip portion has a width satisfying: the palm is opened, and the holding part is held by the thumb and the other four fingers in opposite directions; or the periphery of the holding part is provided with a gripping groove matched with fingers.

Furthermore, in the portable biofeedback and electrical stimulation therapeutic apparatus, preferably, the data transmission interface comprises a first working electrode interface, a second working electrode interface and a myoelectricity reference electrode interface, and the electrode plates comprise a first electrode plate, a second electrode plate and a third electrode plate; the first electrode plate or the probe is connected to the first working electrode interface, the second electrode plate is connected to the second working electrode interface, and the third electrode plate is connected to the myoelectricity reference electrode interface.

Furthermore, in the portable biofeedback and electrical stimulation therapeutic apparatus, preferably, the circuit board is provided with an electrical stimulation boosting isolation output circuit, an output detection protection circuit, a myoelectric acquisition falling detection circuit, a myoelectric signal acquisition processing circuit, an acquisition stimulation switching circuit and a power supply control conversion output circuit.

The utility model discloses simple structure is small and exquisite, portable, is provided with inner shell and shell, and the inner shell is protected inside device, and the shell carries out horizontal restraint to the inner shell, further protects inside device on the one hand, and on the other hand has increased the whole fastness of product, makes the product durable more, anti falling, anti external force destruction. The shell transversely is a whole, and the side edge does not have the gap, makes product stability, wholeness perfect more, guarantees the life-span of product.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a host according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a housing according to an embodiment of the present invention;

fig. 4 is a schematic view of an assembly relationship structure between a circuit board and a display screen according to an embodiment of the present invention;

FIG. 5 is a schematic view of another direction structure of the assembly relationship between the circuit board and the display screen according to the embodiment of the present invention;

fig. 6 is a circuit diagram of an electrical stimulation boost isolation output circuit provided by an embodiment of the present invention;

fig. 7 is a circuit diagram of an output detection protection circuit according to an embodiment of the present invention;

fig. 8 is a circuit diagram of a myoelectricity collection drop detection circuit provided by the embodiment of the present invention;

fig. 9 is a circuit diagram of a secondary power frequency notch circuit provided by an embodiment of the present invention;

fig. 10 is a circuit diagram of an electromyographic signal rectification circuit according to an embodiment of the present invention.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Orientation definition: the orientation is defined in a hand-held state, with the top being the top and the bottom being the bottom.

As shown in fig. 1-5, a portable biofeedback and electrical stimulation therapeutic apparatus comprises a host 1, an electrode plate 2 and a probe 3 connected with the host 1, wherein the host 1 comprises an inner shell 102, an outer shell 101, a display screen 103, a power supply 109 and a circuit board 104, the circuit board 104 is arranged in the inner shell 102 and is connected with a data transmission interface 105 and a charging interface 106, and the data transmission interface 105 is connected with the electrode plate 2 and the probe 3; the display screen 103 is fixed in the inner shell 102 or on the inner shell 102; the outer shell 101 is an integrally formed structure and is sleeved outside the inner shell 102 to restrain the inner shell 102 from laterally disengaging.

As shown in fig. 2, in the whole structure, the present invention adopts two cases, one is an outer case 101 and the other is an inner case 102, the main function of the inner case 102 is to protect and mount devices, and the circuit board 104, the display screen 103, the data transmission interface 105 and the charging interface 106 are mounted inside the inner case 102 or on the inner case 102. The main function of the outer shell 101 is to further protect the inner shell 102 from separation, and to increase the overall stability and firmness of the product. The shapes of the outer shell 101 and the inner shell 102 can be matched with each other or different from each other, a gap can be left between the two, the two can also be attached together, preferably, the two are attached together, and the constraint of the outer shell 101 to the inner shell 102 can be better realized.

Generally, in order to facilitate installation of internal devices, the inner housing 102 is divided into a front housing 121 and a rear housing 122, which are fastened together to form the integral inner housing 102, the side surface of the inner housing 102 is open for installing the data transmission interface 105 and the charging interface 106, and the front housing 121 is opened with a display screen interface 123 and a control button interface 124.

Since the inner case 102 is two-part that snap together, the outer case 101 is laterally constrained to prevent separation between the face plate 121 and the rear case 122 of the inner case 102. Because the effect of shell 101 is used for horizontal restraint, shell 101 is integrated into one piece structure, the utility model discloses an integrated into one piece structure indicates: at least the outer shell 101 is integrally formed in the circumferential direction or the transverse direction to form an annular, seamless and integral structure capable of being sleeved outside the inner shell 102.

There are various embodiments of the housing 101, the first embodiment being an integral enclosure: the outer shell 101 is sleeved on the whole covering inner shell 102, openings are formed in the positions corresponding to the display screen 103, the data transmission interface 105 and the charging interface 106, and a display screen interface 113 is arranged at the position corresponding to the display screen 103. In this embodiment, the length and width of the outer shell 101 substantially correspond to the length and width of the inner shell 102, and the outer shell 101 may cover the inner shell 102 entirely. To facilitate the nesting, an opening is provided at the top or bottom of the outer shell 101, and the inner shell 102 is inserted into the outer shell 101 at the top or bottom, and the outer shell 101 constrains the inner shell 102.

In addition to the above embodiments, as shown in fig. 3, the housing 101 may further include an integrally formed upper housing 111 and an integrally formed lower housing 112. The upper outer shell 111 is sleeved on the upper portion of the inner shell 102, the lower outer shell 112 is sleeved on the lower portion of the inner shell 102, and the upper outer shell 111 and the lower outer shell 112 are detachably and fixedly connected together. The detachable fixed connection can be in various modes such as close fit (interference fit) insertion, buckle clamping, concave-convex fit clamping and the like. The upper housing 111 is integrally formed to form a seamless unitary structure, and the lower housing 112 is integrally formed to also form a seamless unitary structure.

The second embodiment is a partial sleeve: the outer shell 101 covers at least one of the upper portion, the middle portion and the lower portion of the inner shell 102, and openings are formed in positions corresponding to the display screen 103, the data transmission interface 105 and the charging interface 106. This embodiment is partially wrapped, i.e. the outer shell 101 is selectively sleeved on the upper, middle and lower parts of the inner shell 102, and in this way, the inner shell 102 can be restrained in the transverse and circumferential directions. In this embodiment, one housing 101 may be detachably and fixedly connected to the upper housing 111 and the lower housing 112, respectively.

As shown in fig. 2, a control button 141 extends from the inner casing 102, and the control button 141 may be disposed at any place such as the upper part, the middle part and the lower part of the circuit board 104, preferably at the middle part or the lower part of the circuit board 104, according to actual operation requirements, and the control button 141 extends from the control button opening 124 disposed on the inner casing 102, and a button is disposed on the outer casing 101. The key can be made of various required materials, and can be a hard key made of hard materials or a soft key made of soft materials. In this embodiment, at least one of the upper portion, the middle portion and the lower portion of the outer casing 101 is preferably provided with an elastically deformable soft key 114 corresponding to the control key 141 extending from the inner casing 102, and all the soft keys 114 are integrally formed to form an integral structure. In this integral structure, the soft key 114 protrudes from the rest to facilitate control, and the shape of the soft key 114 may be any shape suitable for use, for example: circular, square, oval, elongated, circular, T-shaped, and the like.

The other implementation mode is as follows: the whole outer casing 101 is an elastically deformable structure made of a soft material, and covers the control keys 141 extending from the inner casing, the soft material can be tightly sleeved outside the inner casing 102 on one hand, and can directly correspond to the control keys 141 on the other hand, or the soft keys 114 can be arranged at corresponding positions, and the positions of the soft keys 114 correspond to the control keys 141 extending from the inner casing 102.

In order to further protect the inner shell 102 and the internal devices, at least four corners of the outer shell 101 are provided with hollow protrusions 115, the hollow portions of the hollow protrusions 115 correspond to and accommodate the four corners of the inner shell 102, and gaps are reserved between the four corners of the inner shell 102 and the inner walls of the hollow protrusions 115. After the therapeutic apparatus falls, the hollow protrusion 115 exceeds the surface of the outer shell 101 and contacts with the ground and the like, and the hollow protrusion 115 is hollow and has a gap with the inner shell 102, so that deformation caused by impact can be absorbed, and the damage of the therapeutic apparatus is reduced. The shape of the hollow protrusion 115 is not limited, and may be any shape exceeding the surface. Besides the four corners of the outer shell 101, the four sides of the outer shell 101 may be provided with hollow protrusions, or a gap is left between the whole side of the outer shell 101 and the inner shell to form the hollow protrusions.

Since many patients with inconvenient hands use the therapeutic apparatus, in order to better operate and hold the therapeutic apparatus, at least one of the upper part, the middle part or the lower part of the casing 101 is provided with a holding part, and any two parts or three parts of the casing can also be provided with holding parts, and the shape of the holding parts is matched with the shape of palms or/and fingers to be beneficial to holding. The width of the holding part can be matched with the opening size of the palm, so that the fingers can be folded to grasp the therapeutic apparatus. Preferably, the width of the holding part satisfies: the palm is opened, and the holding part is held by the thumb and the other four fingers in opposite directions; or the periphery of the holding part is provided with a gripping groove matched with fingers.

As shown in fig. 2 and 4-5, the circuit board 104 is fixed in the inner housing 102, generally fixed on the rear housing 122 of the inner housing 102, the rear housing 122 is provided with fixing posts 126, and four corners of the circuit board 104 are fixed on the fixing posts 126 by screws.

The display screen 103 may be directly fixed on the inner housing 102, fixed corresponding to the display screen opening 123 of the inner housing 102, or fixed on the circuit board 104, and the display screen 103 is exposed from the display screen opening 123 for displaying, where the display screen 103 is fixed on the circuit board 104 in this embodiment. The display screen 103 is secured to the circuit board 104 by a mounting bracket 107. the mounting bracket 107 is provided with legs 171. the legs 171 extend from the mounting bracket 107 to a wall on one side thereof, preferably the legs 171 are perpendicular or substantially perpendicular to the plane of the mounting bracket 107. The legs 171 are integral with the mounting bracket 107 and may be fixedly attached together. The legs 171 are provided in pairs, one pair may be provided, or at least two pairs may be provided, on both sides of the mounting bracket 107, and are set according to actual needs. The circuit board 104 is provided with a connecting hole 142 at the periphery; the legs 171 are detachably fixed or non-detachably fixed to each other in cooperation with the connection holes 142.

The first embodiment of the leg 171 and the connecting hole 142 is: the shape of the leg 171 is matched with the shape of the connecting hole 142, and the leg 171 is inserted into the connecting hole 142 in a tight fit manner to fix the mounting bracket 107. The tight fit insertion means that the outer diameter of the leg 171 is slightly larger than or equal to the inner diameter of the connecting hole 142, and the two are inserted in an interference fit manner.

The second embodiment of the leg 171 and the connecting hole 142 is: the inner wall of the connecting hole 142 is provided with a clamping position, the outer side wall of the supporting leg 171 is provided with a clamping head, and the clamping head is clamped in the clamping position of the connecting hole 142 to fixedly connect the two. The screens is the recess, and the dop is the outside arch that extends of landing leg 171, and protruding card is gone into the recess and can dismantle fixed connection with the two.

As shown in fig. 2, 4-5, a third embodiment of the legs 171 and mounting bracket 107 is: the front end of the supporting leg 171 is provided with a positioning head 172, and after the supporting leg 171 elastically deforms and penetrates through the connecting hole 142, the positioning head 172 is pressed against or hooked on the peripheral wall surface of the connecting hole 142. The positioning head 172 is disposed outside the front end of the leg 171, and the leg 171 extends obliquely outward or the positioning head 172 is disposed beyond the connecting hole 142. When the leg support is assembled, the leg support 171 is pressed inwards, the elastic recovery leg support 171 is inserted into the connecting hole 142, the inserted leg support 171 rebounds and extends obliquely outwards, and the front end positioning head 172 of the leg support 171 is pressed against or hooked on the peripheral wall surface of the connecting hole 142. The connecting hole 142 has a larger opening diameter than the width of the leg 171 and the positioning head 172 to facilitate the passage of the positioning head 172 therethrough.

The shape of the mounting bracket 107 is consistent with the shape of the back surface of the display screen 103, and the mounting bracket 107 may be of a plate structure or a frame structure, and for better installation and fixation, the periphery of the mounting bracket 107 is preferably wrapped on at least two side wall surfaces of the display screen 103. The display screen 103 may be directly fixed to the mounting bracket 107 or may be snap-fitted. In the clamping manner, the mounting bracket 107 is provided with a clamping groove 175, and the display screen 103 is clamped into the clamping groove 175 to be fixed. Draw-in groove 175 can be for four sides surrounding structure, trilateral surrounding structure, also can be for two sides relative structure that sets up, and width between the relative draw-in groove 175 inner wall is the same with display screen 103 length and width, and the two can tight fit or laminating assembly together to prevent that display screen 103 from dropping from installing support 107.

As shown in fig. 1, the data transmission interface 105 includes a first working electrode interface 151, a second working electrode interface 152 and a myoelectricity reference electrode interface 153, and the first working electrode interface 151, the second working electrode interface 152 and the myoelectricity reference electrode interface 153 are disposed on the side of the circuit board 104 and extend from the inner casing 102 and the outer casing 101 to facilitate connection. The electrode plates 2 comprise a first electrode plate 201, a second electrode plate 202 and a third electrode plate 203; the first electrode pad 201 or the probe 3 is connected to the first working electrode interface 151, the second electrode pad 202 is connected to the second working electrode interface 152, and the third electrode pad 203 is connected to the myoelectricity reference electrode interface 153.

The power supply 109 arranged in the inner housing 102 is used for supplying power to the therapeutic apparatus, and the power supply 109 is a battery or a rechargeable battery or the like.

In the portable biofeedback and electrical stimulation therapeutic apparatus, the circuit board 104 is preferably provided with an electrical stimulation boosting isolation output circuit, an output detection protection circuit, a myoelectric acquisition and falling detection circuit, a myoelectric signal acquisition and processing circuit, an acquisition stimulation switching circuit and a power supply control conversion output circuit.

As shown in fig. 6, the circuit board 104 is provided with an electrical stimulation boost isolation output circuit connected to the processor, and the electrical stimulation boost isolation output circuit includes: a booster T2, a photocoupler U20, a resistor R68, a resistor R71, a resistor R72, a resistor R73, a capacitor C65, a capacitor C66, a capacitor C67, a diode D17, a diode D18, a diode D19 and a diode D20, wherein a first input end of the booster T2 is connected with a DC input end through a series resistor R68 and a capacitor C65, a second input end of the booster T2 is connected with the DC input end, and a third input end of the booster T2 is connected with the DC input end through a series resistor R71 and a capacitor C66; a first output end of the booster T2 is connected with a TH2A port, a second output end of the booster T2 is connected with an anode of a diode D17, a cathode of the diode D17 is connected with an anode of a diode D18, and a cathode of a diode D18 is connected with a TH2B port; a second output end of the booster T2 is connected with the cathode of the diode D19, the anode of the diode D19 is connected with the cathode of the diode D20, and the anode of the diode D20 is connected with the TH2B port;

a second output end of the booster T2 is connected with a first input end of a photoelectric coupler U20 through a resistor R72, and a TH2B port is connected with a second input end of the photoelectric coupler U20; the first output end of the photoelectric coupler U20 is connected with a power supply through a resistor R73, the first output end of the photoelectric coupler U20 is grounded through a capacitor C67, and the second output end of the photoelectric coupler U20 is grounded.

The existing stimulation booster circuit technology adopts a non-isolated booster circuit, 2-channel stimulation output shares the same booster device, and when the booster device breaks down, the 2-channel electrical stimulation output cannot work. The embodiment adopts a completely isolated boosting and load detection circuit, a stimulating front-stage circuit and a stimulating rear-stage circuit are completely isolated through a booster T2 and a photoelectric coupler U20, and the completely isolated boosting electric stimulation output circuit does not influence the stimulating output of another channel when each channel of the boosting circuit breaks down, so that better safety is provided for the user.

As shown in fig. 7, the circuit board 104 is provided with an output detection protection circuit connected to the electrical stimulation boost isolation output circuit for detecting a short circuit condition, and the output detection protection circuit is connected to the processor. The output detection protection circuit includes: the transistor Q11, the transistor Q12, the transistor Q16, the MOS transistor Q15, the resistor R57, the resistor R58, the resistor R60, the resistor R61, the resistor R62, the resistor R79, the resistor R80, the resistor R83, the resistor R86 and the diode D15;

the collector of the triode Q11 is connected with the first input end of the booster T2, the base of the triode Q11 is connected with the processor through a resistor R79, the base of the triode Q11 is grounded through a resistor R86, and the emitter of the triode Q11 is connected with the drain of the MOS tube Q15; the collector of the triode Q12 is connected with the third input end of the booster T2, the base of the triode Q12 is connected with the processor through a resistor R80, the base of the triode Q12 is grounded through a resistor R83, and the emitter of the triode Q12 is connected with the drain of the MOS tube Q15;

the grid of the MOS transistor Q15 is connected with the processor, the grid of the MOS transistor Q15 is grounded through a resistor R57, the source of the MOS transistor Q15 is connected with the anode of the diode D15, and the cathode of the diode D15 is grounded; the source electrode of the MOS transistor Q15 is connected with the base electrode of the triode Q16 through a resistor R60, and the source electrode of the MOS transistor Q15 is grounded through a resistor R58; the collector of the triode Q16 is connected with a power supply through a resistor R62, and the collector of the triode Q16 is connected with the processor; the emitter of transistor Q16 is connected to ground.

The output detection protection circuit of the embodiment mainly comprises a triode Q11, a triode Q12, a MOS transistor Q15, a triode Q16 and a diode D15, the MOS transistor Q15 is conducted through a CPU, whether short circuit occurs in the triode Q11 and the triode Q12 is detected, when the short circuit exists, the voltage on the diode D15 is detected through the triode Q16, and the CPU judges the state by reading a signal of T2 JC. When a short circuit occurs, the CPU controls a T2_ ON signal to turn off the MOS tube Q15 to realize protection. The method can effectively detect whether the output of the front stage has a short circuit condition or not, and implement action protection on the circuit of the rear stage under the short circuit condition. And when each channel fails, the stimulation output circuit of the other channel is not influenced, and the use comfort of a user is improved more effectively.

As shown in fig. 8, a myoelectricity collection falling detection circuit for detecting whether the myoelectricity collection electrode falls off is arranged on the circuit board 104, and the myoelectricity collection falling detection circuit includes: a first amplifier U2A, a second amplifier U2B, a third amplifier U3A, a fourth amplifier U3B, a two-input and gate U4, a resistor R5, a resistor R15, a resistor R16, a resistor R17, a resistor R18, a resistor R19, a resistor R20, a resistor R22, a resistor R24, a resistor R25, a resistor R26, a resistor R27, a resistor R28, a resistor R29, a resistor R30, a resistor R31, a resistor R34, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a diode D100, a diode D5, a clamp diode D4, and a clamp diode D6;

a resistor R5, a resistor R17, a resistor R20, a resistor R22, a capacitor C4, a capacitor C5, a capacitor C6 and a capacitor C7 form a voltage division circuit, a first output end of the voltage division circuit is respectively connected with an inverting input end of a first amplifier U2A and an inverting input end of a second amplifier U2B, a second output end of the voltage division circuit is connected with a non-inverting input end of a third amplifier U3A through the resistor R25, and a second output end of the voltage division circuit is connected with a non-inverting input end of a fourth amplifier U3B through the resistor R31;

the non-inverting input end of the first amplifier U2A is connected with the output end of the third amplifier U3A through a resistor R19, the output end of the first amplifier U2A is connected with the anode of a diode D100, the cathode of the diode D100 is connected with the first input end of a two-input AND gate U4, and the cathode of the diode D100 is grounded through a resistor R18; the output end of the first amplifier U2A is connected with a supply voltage through a resistor R15;

the non-inverting input end of the second amplifier U2B is connected with the inverting input end of the fourth amplifier U3B through a resistor R29, the output end of the second amplifier U2B is connected with the anode of a diode D5, the cathode of a diode D5 is connected with the second input end of a two-input AND gate U4, and the cathode of a diode D5 is grounded through a resistor R28; the output end of the first amplifier U2B is connected with a supply voltage through a resistor R16;

the inverting input end of the third amplifier U3A is connected with the output end of the third amplifier U3A, and the output end of the third amplifier U3A is connected with the first signal input end through a resistor R24; the non-inverting input end of the third amplifier U3A is connected with the second signal input end through a resistor R27, and the non-inverting input end of the third amplifier U3A is connected with a power supply through a clamping diode D4;

the inverting input end of the fourth amplifier U3B is connected with the output end of the fourth amplifier U3B, the output end of the fourth amplifier U3B is connected with the third signal input end through a resistor R30, the non-inverting input end of the fourth amplifier U3B is connected with the fourth signal input end through a resistor R34, and the non-inverting input end of the fourth amplifier U3B is connected with a power supply through a clamping diode D6;

the output of the two-input and gate U4 is connected to the remove interface through resistor R26.

Alternatively, in the present embodiment, the first amplifier U2A and the second amplifier U2B are a one-piece integrated device, and the third amplifier U3A and the fourth amplifier U3B are a one-piece integrated device.

In the embodiment, a voltage division circuit consisting of a resistor R5, a resistor R17, a resistor R20 and a resistor R22 provides a reference for the comparison of the subsequent operational amplifier voltage, and U3A and U3B are used for voltage following output impedance transformation, so that when the original myoelectric signal is not influenced, the comparison is performed for U2A and U2B, and the input is provided for a subsequent myoelectric signal processing circuit. Comparing the electromyographic signals with the reference negative pressure through a comparator U2A and a comparator U2B to judge whether the contact is good; the drop detection signal is output through a two-input and gate.

The electromyographic signal acquisition processing circuit comprises a secondary power frequency trap circuit and an electromyographic signal rectification circuit, and the acquired signals are filtered by the secondary power frequency trap circuit and then output to the electromyographic signal rectification circuit.

As shown in fig. 9, the secondary power frequency trap circuit in the portable biofeedback and electrical stimulation therapeutic apparatus of this embodiment includes a primary power frequency electric wave circuit and a secondary power frequency trap circuit;

the first-stage power frequency electric wave circuit comprises: the circuit comprises an amplifier U26C, an amplifier U26D, a resistor R92, a resistor R93, a resistor R98, a resistor R111, a resistor R120, a resistor R121, a resistor R126, a capacitor C72, a capacitor C74, a capacitor C79 and a capacitor C80, wherein the inverting input end of the amplifier U26C is connected with the output end of the amplifier U26C, and the inverting input end of the amplifier U26D is connected with the output end of the amplifier U26D; the non-inverting input end of the amplifier U26D is connected with the first end of the resistor R93 through a resistor R98, the second end of the resistor R93 is connected with the electromyographic signal acquisition end through a resistor R92, the second end of the resistor R93 is connected with the output end of the amplifier U26C through a capacitor C72, and the second end of the resistor R93 is connected with the output end of the amplifier U26C through a capacitor C74; the non-inverting input end of the amplifier U26D is connected with the first end of the capacitor C80, the second end of the capacitor C80 is connected with the electromyographic signal acquisition end through the capacitor C79, and the second end of the capacitor C80 is connected with the output end of the amplifier U26C through the series resistor R120 and the resistor R121; the output end of the amplifier U26D is connected with the non-inverting input end of the amplifier U26C through a resistor R111, and the non-inverting input end of the amplifier U26C is grounded through a resistor R126;

the second-stage power frequency electric wave circuit comprises: the circuit comprises an amplifier U27D, an amplifier U27C, a resistor R94, a resistor R95, a resistor R99, a resistor R103, a resistor R112, a resistor R122, a resistor R123, a resistor R127, a capacitor C73, a capacitor C75, a capacitor C76 and a capacitor C77, wherein the inverting input end of the amplifier U27D is connected with the output end of the amplifier U27D, and the inverting input end of the amplifier U27C is connected with the output end of the amplifier U27C; the non-inverting input end of the amplifier U27C is connected with the first end of the resistor R95 through a resistor R103, the second end of the resistor R95 is connected with the output end of the amplifier U26D through a series resistor R94 and a resistor R99, the second end of the resistor R95 is connected with the output end of the amplifier U27D through a capacitor C73, and the second end of the resistor R95 is connected with the output end of the amplifier U27D through a capacitor C75; the non-inverting input end of the amplifier U27C is connected with the first end of the capacitor C77, the second end of the capacitor C77 is connected with the output end of the amplifier U26D through the capacitor C76, and the second end of the capacitor C77 is connected with the output end of the amplifier U27D through the series resistor R122 and the resistor R123; the output terminal of the amplifier U27C is connected to the non-inverting input terminal of the amplifier U27D through a resistor R112, and the non-inverting input terminal of the amplifier U27D is connected to ground through a resistor R127.

The power frequency filter circuit of this embodiment adopts positive feedback's active double T band elimination filter, and 2 grades of designs, and the power frequency signal in the electromyographic signal that relatively 1 grade filtering is more effective to be filtered except gathering has weakened the interference of power frequency signal. The Q value of the 2-stage circuit can be adjusted through the resistor R111 and the resistor R126 and the ratio of the resistor R112 and the resistor R127 respectively.

As shown in fig. 10, the electromyographic signal rectifying circuit in the portable biofeedback and electrical stimulation therapeutic apparatus of the present embodiment comprises an amplifier U27A, an amplifier U29D, a resistor R131, a resistor R132, a resistor R137, a resistor R138, a resistor R139, a resistor R141, a resistor R144, and a clamping diode D24;

the output end of the amplifier U27C is connected with the first end of the resistor R137, the second end of the resistor R137 is connected with the inverting input end of the amplifier U29D, the second end of the resistor R137 is connected with the pin 1 of the clamping diode D24 through the resistor R138, the second end of the resistor R137 is connected with the pin 2 of the clamping diode D24, the output end of the amplifier U29D is connected with the pin 3 of the clamping diode D24, and the non-inverting input end of the amplifier U29D is grounded through the resistor R144; pin 1 of the clamping diode D24 is connected to the inverting input terminal of the amplifier U27A through a resistor R139, the output terminal of the amplifier U27C is connected to the inverting input terminal of the amplifier U27A through a resistor R132, and the inverting input terminal of the amplifier U27A is connected to the output terminal of the amplifier U27A through a resistor R141; the non-inverting input of amplifier U27A is connected to ground through resistor R131.

The existing electromyographic signal processing design adopts a single-power operational amplifier circuit to work, and adopts a mode of a middle reference value to lift a signal and input the signal into a chip ADC for processing, so that the signal processing range of the ADC is reduced by half. The electromyographic signal processing circuit of the embodiment adopts a dual-power circuit, carries out precise rectification processing on the electromyographic signal processed at the previous stage, and rectifies a weak alternating current signal into a small direct current signal; the ADC input signal range of the CPU is 0-3.3V, only signals with amplitude larger than 0V can be processed, the rectified electromyographic signals are conveniently sent to the CPU for ADC acquisition, the range of the signals acquired and processed by the ADC is twice as large as the range of the signals which are not rectified, corresponding amplification processing switching circuits are few in wide-range signal acquisition, and ADC port resources used by the CPU are saved.

The power control conversion output circuit may be implemented by the prior art, and is not described herein again.

Claims

1. A portable biofeedback and electric stimulation therapeutic apparatus comprises a host, an electrode plate and a probe, wherein the electrode plate and the probe are connected with the host; the display screen is fixed in or on the inner shell; the outer shell is of an integrally formed structure and is sleeved outside the inner shell to restrain the inner shell from transversely separating.

2. The portable biofeedback and electrical stimulation therapeutic apparatus according to claim 1, wherein the outer shell is sleeved on and covers the whole inner shell, and openings are arranged corresponding to the display screen, the data transmission interface and the charging interface;

3. The portable biofeedback and electrical stimulation treatment device as recited in claim 2, wherein said housing comprises an integrally formed upper housing and an integrally formed lower housing, said upper housing and said lower housing being removably and fixedly connected together.

4. The portable biofeedback and electrical stimulation therapeutic apparatus as claimed in claim 1, wherein the display screen is fixed on a circuit board through a mounting bracket, the mounting bracket is provided with support legs, and the periphery of the circuit board is provided with connecting holes;

5. The portable biofeedback and electrical stimulation treatment instrument as recited in claim 4, wherein said mounting bracket is provided with a slot, and said display screen is secured by being snapped into said slot.

6. The portable biofeedback and electrical stimulation treatment instrument as recited in any of claims 1-5, wherein the outer shell is an elastically deformable structure made of a flexible material and covers the control buttons extending from the inner shell;

7. The portable biofeedback and electrical stimulation treatment instrument as recited in any of claims 1-5, wherein at least four corners of said outer shell are provided with hollow protrusions, said hollow protrusions corresponding to and receiving said four corners of said inner shell, and wherein gaps are left between said four corners of said inner shell and inner walls of said protrusions.

8. The portable biofeedback and electrical stimulation treatment apparatus as claimed in claim 1, wherein at least an upper portion, a middle portion or a lower portion of the housing is provided with a grip portion, the grip portion being shaped to fit the shape of a palm or/and fingers to facilitate gripping; the width of the holding part satisfies: the palm is opened, and the holding part is held by the thumb and the other four fingers in opposite directions; or the periphery of the holding part is provided with a gripping groove matched with fingers.

9. The portable biofeedback and electrical stimulation treatment instrument as claimed in any one of claims 1 to 5, wherein the data transmission interface comprises a first working electrode interface, a second working electrode interface and a myoelectricity reference electrode interface, and the electrode pads comprise a first electrode pad, a second electrode pad and a third electrode pad; the first electrode plate or the probe is connected to the first working electrode interface, the second electrode plate is connected to the second working electrode interface, and the third electrode plate is connected to the myoelectricity reference electrode interface.

10. The portable biofeedback and electrical stimulation therapeutic apparatus as claimed in any one of claims 1 to 5, wherein the circuit board is provided with an electrical stimulation boosting and isolating output circuit, an output detection protection circuit, a myoelectric acquisition and falling detection circuit, a myoelectric signal acquisition and processing circuit, an acquisition and stimulation switching circuit and a power supply control conversion output circuit.