CN217360262U - Electrode slice falling detection device and medical instrument - Google Patents
Electrode slice falling detection device and medical instrument Download PDFInfo
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- CN217360262U CN217360262U CN202221190151.4U CN202221190151U CN217360262U CN 217360262 U CN217360262 U CN 217360262U CN 202221190151 U CN202221190151 U CN 202221190151U CN 217360262 U CN217360262 U CN 217360262U
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Abstract
The utility model relates to an electronic equipment technical field especially relates to an electrode slice detection device and medical instrument that drop, and the device includes: an electrical stimulation pulse control circuit comprising: the first voltage-controlled current source control sub-circuit, the second voltage-controlled current source control sub-circuit, the positive pulse control sub-circuit, the negative pulse control sub-circuit and the H bridge switch are arranged, the H bridge switch comprises a first group of switches and a second group of switches, the first voltage-controlled current source control sub-circuit and the positive pulse control sub-circuit are respectively connected to two ends of the first group of switches, the second voltage-controlled current source control sub-circuit and the negative pulse control sub-circuit are connected to two ends of the second group of switches, a first detection point is arranged between the first voltage-controlled current source control sub-circuit and the first group of switches, or a second detection point is arranged between the second voltage-controlled current source control sub-circuit and the second group of switches; the falling detection circuit is connected with the first detection point or the second detection point; and the singlechip is connected with the target output end of the falling detection circuit and is used for judging whether the electrode plate falls or not according to the level signal displayed by the singlechip.
Description
Technical Field
The utility model relates to an electronic equipment technical field especially relates to an electrode slice detection device and medical instrument that drops.
Background
Some medical instruments often need to use electrical stimulation pulses with specific frequency and amplitude to treat the shoulder, neck, waist, pelvic floor muscles and other parts to achieve the purpose of rehabilitation and exercise, and the medical instruments use a plurality of electrodes (patch structures or rod structures), and the electrode pads or rods are adhered or placed on the designated parts of the human body during treatment, so that weak current is provided for the human body through the electrodes to achieve the purpose of treatment. Some medical devices also have the function of collecting weak muscle voltage signals generated by the skin or the pelvic floor muscles through the electrode plates or the rods.
In actual use, the electrode slice or the rod may fall off from a human body to cause signal open circuit, signal acquisition distortion or no electric stimulation pulse acts on the human body to cause the function of the medical appliance to be invalid, and in severe cases, the medical appliance can cause harm to the human body.
Therefore, how to detect the falling of the electrode sheet or the rod from the human body is a technical problem to be solved urgently at present.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention has been made to provide an electrode sheet drop detection device and a medical instrument that overcome or at least partially solve the above problems.
In a first aspect, the utility model provides an electrode slice detection device that drops, include:
an electrical stimulation pulse control circuit comprising: the high-voltage-controlled power supply comprises a first voltage-controlled current source control sub-circuit, a second voltage-controlled current source control sub-circuit, a first pulse control sub-circuit, a second pulse control sub-circuit and an H-bridge switch, wherein the H-bridge switch comprises a first group of switches and a second group of switches, the first voltage-controlled current source control sub-circuit and the first pulse control sub-circuit are respectively connected to two ends of the first group of switches, the second voltage-controlled current source control sub-circuit and the second pulse control sub-circuit are connected to two ends of the second group of switches, a first detection point is arranged between the first voltage-controlled current source control sub-circuit and the first group of switches, or a second detection point is arranged between the second voltage-controlled current source control sub-circuit and the second group of switches;
a drop detection circuit connected to the first detection point or the second detection point, the drop detection circuit including: a first comparator;
and the singlechip is connected with the target output end of the falling detection circuit.
Furthermore, the drop-off detection circuit is a drop-off detection sub-circuit of a plurality of channels, and the drop-off detection sub-circuit of each channel comprises detection channels for two electrode plates.
Furthermore, the inverted input ends of the first comparators of the drop-out detection sub-circuits of the channels are connected in parallel, and share a voltage division circuit.
Further, still include: a level conversion circuit;
the level conversion circuit is connected between the target output end of the falling detection circuit and the single chip microcomputer.
Further, the first voltage controlled source control sub-circuit comprises: the second comparator, the first current sampling resistor and the first negative feedback resistor;
a first reverse input end of the second comparator is connected with one end of the first negative feedback resistor, one end of the first current sampling resistor is connected with the other end of the first negative feedback resistor, the other end of the first current sampling resistor is grounded, and a first positive input end of the second comparator is connected with the analog voltage input module;
the second voltage controlled source control sub-circuit comprises: the third comparator, the second current sampling resistor and the second negative feedback resistor;
the second reverse input end of the third comparator is connected with one end of the second negative feedback resistor, one end of the second current sampling resistor is connected with the other end of the second negative feedback resistor, the other end of the second current sampling resistor is grounded, and the second positive input end of the third comparator is connected with the analog voltage input module.
Further, the first pulse control sub-circuit includes: a first base electrode of the first triode is used as a first input end of the first pulse control sub-circuit, the first input end is connected with the level control module, a first source electrode of the first triode is grounded, and a first drain electrode is used as a first output end of the first pulse control sub-circuit and is connected with the first group of switches;
the second pulse control sub-circuit includes: and a second base electrode of the second triode is used as a second input end of the second pulse control sub-circuit, the second input end is connected with the level control module, a second source electrode of the second triode is grounded, and a second drain electrode is used as a second output end of the second pulse control sub-circuit and is connected with the second group of switches.
Further, the first set of switches comprises: a first switch and a third switch;
the second set of switches comprises: a second switch and a fourth switch.
Further comprising: the first electrode plate is arranged between the first switch and the third switch and connected with the first switch, and the second electrode plate is connected with the third switch;
between the second switch and the fourth switch, the first electrode plate is connected with the second switch, and the second electrode plate is connected with the fourth switch.
Further, still include: and two ends of the capacitor are respectively and correspondingly connected to the first electrode plate and the second electrode plate.
In a second aspect, the present invention further provides a medical device, including any one of the first aspect, the electrode plate drop detection apparatus.
Further, the medical instrument is specifically any one of the following:
pelvic floor muscle rehabilitation instrument, rectus abdominis therapeutic instrument and intermediate frequency physiotherapy instrument.
The embodiment of the utility model provides an in one or more technical scheme, following technological effect or advantage have at least:
the utility model provides a pair of electrode slice detection device that drops, include: an electrical stimulation pulse control circuit comprising: the high-speed pulse control circuit comprises a first voltage-controlled current source control sub-circuit, a second voltage-controlled current source control sub-circuit, a positive pulse control sub-circuit, a negative pulse control sub-circuit and an H bridge switch, wherein the H bridge switch comprises a first group of switches and a second group of switches; the detection circuitry that drops, connect first check point or second check point, should drop detection circuitry includes: a first comparator; and the singlechip is connected with the target output end of the falling detection circuit and is used for judging whether the electrode plate falls or not according to the level signal displayed by the singlechip.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Moreover, in the drawings, like reference numerals are used to refer to like elements throughout. In the drawings:
fig. 1 shows a schematic block diagram of an electrode plate drop detection device in an embodiment of the present invention;
fig. 2 shows a specific structural diagram of an electrical stimulation pulse control circuit in an embodiment of the present invention;
fig. 3 shows a specific structural schematic diagram of the fall-off detection circuit in the embodiment of the present invention;
fig. 4 is a schematic diagram illustrating a pulse current generated when the first electrode plate and the second electrode plate are normally connected to a human body according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating that the first output end outputs a positive pulse current when the electrode plate is not detached in the embodiment of the present invention;
fig. 6 shows a schematic waveform diagram of the output of the first output end after the electrode plate falls off in the embodiment of the present invention;
fig. 7 shows a schematic diagram of the embodiment of the present invention after enlarging fig. 5;
fig. 8 shows a schematic structural diagram of a level shift circuit in an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
The embodiment of the utility model provides an electrode slice detection device that drops, as shown in figure 1, figure 2, figure 3, include:
the electrical stimulation pulse control circuit 101 includes: the first voltage-controlled current source control sub-circuit 201, the second voltage-controlled current source control sub-circuit 202, the first pulse control sub-circuit 203, the second pulse control sub-circuit 204 and the H-bridge switch MQ1, wherein the H-bridge switch MQ1 comprises a first group of switches and a second group of switches, the first voltage-controlled current source control sub-circuit 201 and the first pulse control sub-circuit 203 are respectively connected to two ends of the first group of switches, the second voltage-controlled current source control sub-circuit 202 and the second pulse control sub-circuit 204 are respectively connected to two ends of the second group of switches, a first detection point P1 is arranged between the first voltage-controlled current source control sub-circuit 201 and the first group of switches, or a second detection point P2 is arranged between the second voltage-controlled current source control sub-circuit 202 and the second group of switches;
a fall detection circuit 102 connected to the first detection point P1 or the second detection point P2, the fall detection circuit 102 comprising: a first comparator 301;
and the singlechip 103 is connected with the output end of the falling-off detection circuit 102.
Next, the electrical stimulation pulse control circuit 101 is described in detail, and specifically as shown in fig. 2, the first voltage-controlled current source control sub-circuit 201 includes: the second comparator U11B, the first current sampling resistor R87 and the first negative feedback resistor R81; the first inverting input end of the second comparator U11B is connected to one end of the first negative feedback resistor R81, one end of the first current sampling resistor R87 is connected to the other end of the first negative feedback resistor R87, the other end of the first current sampling resistor R87 is grounded, the first forward input end of the second comparator U11B is connected to the analog voltage input module, specifically, the analog voltage input module is used for providing a first adjustable dc analog voltage, and the first adjustable dc analog voltage can be set to different gears in a program, for example: the 1 gear outputs 13mV, the 2 gear outputs 26mV, and the like.
The second voltage-controlled current source control sub-circuit 202 includes: a third comparator U11A, a second current sampling resistor R86 and a second negative feedback resistor R80; the second inverting input terminal of the third comparator U11A is connected to one end of the second negative feedback resistor R80, one end of the second current sampling resistor R86 is connected to the other end of the second negative feedback resistor R80, the other end of the second current sampling resistor R86 is grounded, the second forward input terminal of the third comparator U11A is connected to the analog voltage input module, specifically, the analog voltage input module is used for providing a second adjustable dc analog voltage, and the second adjustable dc analog voltage can be set to different gears in a program, for example: the output of the 1 gear is 13mV, the output of the 2 gear is 26mV, and the like.
A first adjustable direct current analog voltage is input to a first positive input end of the second comparator U11B through an analog voltage input module, and when a specific value is greater than 0, correspondingly, the input to a second positive input end of the third comparator U11A is 0; and a second adjustable dc analog voltage is input to the second positive input terminal of the third comparator U11A through the analog voltage input module, and when the specific value is greater than 0, the first positive input terminal of the second comparator U11B is correspondingly 0.
The first pulse control sub-circuit 203 includes: a first triode Q3, wherein a first base electrode of the first triode Q3 is used as a first input end of the first pulse control sub-circuit, is connected with the level control module, and inputs a first level control signal through the level control module, a first source electrode of the first triode Q3 is grounded, and a first drain electrode is used as a first output end of the first pulse control sub-circuit and is connected with the first group of switches; the second pulse control sub-circuit includes: and a second base electrode of the second triode Q4, which is used as a second input end of the second pulse control sub-circuit, is connected with the level control module, and inputs a second level control signal through the level control module, a second source electrode of the second triode Q4 is grounded, and a second drain electrode, which is used as a second output end of the second pulse control sub-circuit, is connected with the second group of switches.
When the first input end of the first pulse control sub-circuit 203 inputs a positive pulse signal through the level control module, the second input end of the second pulse control sub-circuit 204 inputs a negative pulse signal through the level control module; when the second input terminal of the second pulse control sub-circuit 204 inputs a positive pulse signal through the level control module, the first input terminal of the first pulse control sub-circuit 203 inputs a negative pulse signal through the level control module.
The H-type switch MQ1 includes a first group of switches including, in particular, a first switch S1 and a third switch S3, and a second group of switches including a second switch S2 and a fourth switch S4. Between the first switch S1 and the third switch S3, further comprising: a first electrode tab E1 connected to the first switch S1, and a second electrode tab E2 connected to the third switch S3. similarly, between the second switch S2 and the fourth switch S4, the first electrode tab E1 is connected to the second switch S2, and the second electrode tab E2 is connected to the fourth switch S4. Specifically, the first electrode pad E1 and the second electrode pad E2 are both used for connecting to a human body, and when the first electrode pad E1 and the second electrode pad E2 are both connected to a human body, the first switch S1 and the third switch S3 or the second switch S2 and the fourth switch S4 can be turned on.
The operation principle of the electrical stimulation pulse control circuit 101 is described in detail below:
when the first electrode pad E1 and the second electrode pad E2 are both connected to a human body and are in an unsnapped state, when a positive pulse signal, for example, lasting 500us, is input through the level control module at the first input end of the first pulse control sub-circuit 203, and a negative pulse signal is input at the second input end of the second pulse control sub-circuit 204, the corresponding first transistor Q3 is turned on, the second transistor Q4 is turned off, the third switch S3 in the H-type switch MQ1 is turned on, and the first switch S1 is also turned on, that is, the first group of switches are turned on, at this time, since the first positive input end of the second comparator U11B in the first voltage-controlled source control sub-circuit 201 inputs the first adjustable dc analog voltage through the analog voltage input module, for example, 13mV set to 1 st gear, the second positive input end of the third comparator U11A in the corresponding second voltage-controlled source control sub-circuit 202 inputs the second dc adjustable analog voltage through the analog voltage input module, which is 0, in this way, the current of the positive pulse signal is grounded through the Vhigh (Vhigh is a high dc voltage generated by the boost converter inside the electrode plate falling-off detection apparatus) third switch S3, the first electrode plate E1, the human body, the second electrode plate E2, the first switch S1, and the first current sampling resistor R87 in this order to form a loop.
When a positive pulse signal, such as 500us in duration, is input to the second input terminal of the second pulse control sub-circuit 204 through the level control module, and a negative pulse signal is input to the first input terminal of the first pulse control sub-circuit 203 through the level control module, the corresponding second transistor Q4 is turned on, the first transistor Q3 is turned off, the second switch S2 in the H-type switch MQ1 is turned on, and the fourth switch S4 is also turned on, that is, the second group of switches is turned on, at this time, since the second positive input terminal of the third comparator U11A in the second voltage-controlled source control sub-circuit 202 inputs the second adjustable dc analog voltage, such as 13mV of 1 st gear, through the analog voltage input module, the first positive input terminal of the second comparator U11B in the corresponding first voltage-controlled source control sub-circuit 201 inputs the second adjustable dc analog voltage as 0 through the analog voltage input module, so that the single current of the positive pulse signal sequentially passes through Vhigh, the second switch S2, the second electrode slice E2, the human body, the first electrode slice E1, the fourth switch S4 and the second current sampling resistor R3 are grounded to form a loop.
The first electrode pad E1 and the second electrode pad E2 are normally connected to the human body, and the pulse current generated thereby is as shown in fig. 4.
Specifically, when the electrode pad is not detached, a schematic diagram of outputting a positive pulse current at the first output terminal of the first current source control sub-circuit 201 is shown in fig. 5, and during a positive pulse of about 500us (498.17 us), the constant current source starts to operate stably after about 20us, that is, the output level of the first output terminal switches back and forth between 2V and 4.2V at a high speed, and when the electrode pad is not operated stably, the output level of the first output terminal is 5V.
After the electrode sheet falls off, the first output terminal outputs a waveform as shown in fig. 6, specifically, a stable operation is started immediately while the first output terminal of the first current source control sub-circuit 201 outputs a positive pulse current, but the operation is stopped after 100us to 200us, that is, the voltage is directly changed to 5V in the figure.
Comparing the graphs of fig. 5 and 6, it can be seen that when the positive pulse is just sent, if the electrode sheet is not dropped, there will be a short high level pulse, and after amplification, the pulse width is about 25us as shown in fig. 7, and the amplitude is greater than 4.2V; if the electrode plate falls off, the short high-level pulse is not output at the first output end.
The electrode plate falling detection device further comprises a capacitor C147, and two ends of the capacitor C147 are respectively and correspondingly connected to the first electrode plate and the second electrode plate.
The reason for the difference is that when the electrode sheet falls off, there is no bleed-off path, when the pulse is sent in the switching direction, there is a negative voltage across the capacitor C147, at this time, the current source of the second pulse control sub-circuit 204 outputs in reverse, and further the current passes through the first current sampling resistor R87, but after 100us to 200us, the negative voltage stored in the capacitor C147 is bled off, at this time, there is no current passing through the two terminals of the first current sampling resistor R87, and the output voltage at the first output terminal of the first voltage-controlled current source control sub-circuit is 5V. When the electrode plates do not fall off, the capacitor C147 needs a short charging time, and at the moment, no current passes through the first current sampling resistor R87, so that the first output end of the first voltage-controlled current source control sub-circuit raises the control voltage to 5V, and the capacitor C147 works normally after being fully charged.
In actual use, the first electrode sheet E1 or the second electrode sheet E2 may fall off from a human body due to various reasons, the falling off of the electrode sheet may affect the generation of the electrical stimulation pulse, or may affect the health of people, and how to detect the falling off of the electrode sheet is taken as an example of a first detection point P1 set in the electrical stimulation pulse control circuit, the first detection point P1 is set between the first voltage-controlled current source control sub-circuit 201 and the first set of switches, as shown in fig. 3, a falling-off detection circuit is added, the falling-off detection circuit is connected to the first detection point P1, and the falling-off detection circuit includes: a first comparator U13. Specifically, the first detecting point P1 is connected to the third positive input terminal of the first comparator U13.
Specifically, the drop-off detection circuit is a drop-off detection sub-circuit for a plurality of channels, and the drop-off detection sub-circuit for each channel includes detection channels for two electrode sheets.
As shown in fig. 3, the drop-out detection sub-circuit includes two channels, specifically, an a channel and a B channel, where the drop-out detection sub-circuit of the a channel includes a first comparator U13A, and the drop-out detection sub-circuit of the B channel includes a first comparator U13B, and the drop-out detection sub-circuits of the two channels are connected in parallel, specifically, the inverting input terminals of the first comparators of the drop-out detection sub-circuits of the multiple channels are connected in parallel, and share a voltage dividing circuit. The voltage divider circuit shown in fig. 3 includes R90 and R95.
The +5V voltage is input to a third reverse input end of any one of the first comparators U13, a third forward input end is connected to the first detection point P1 or the second detection point P2, and a target output end is connected to the single chip microcomputer 103.
The principle of specifically detecting whether the electrode plate falls off is as follows:
when the third positive input end is connected with the first detection point P1, when the electrode sheet does not fall off, that is, any one of the first electrode sheet E1 and the second electrode sheet E2 of any channel does not fall off, a high-level pulse is detected within 25us from the start of the positive pulse displayed in the single chip microcomputer 103 through the detection of the fall-off detection sub-circuit 102; when any electrode piece falls off, namely any electrode piece in the first electrode piece and the second electrode piece of any channel falls off, the falling detection sub-circuit 102 detects that the voltage is always low within 25us from the start of the positive pulse displayed in the single chip microcomputer 103.
Therefore, whether the electrode slice falls off or not is judged according to the detection result of the singlechip 103.
Of course, when the third positive input terminal is connected to the second detecting point P2, the time point of detection is changed to the time point when the negative pulse is sent, and the other is substantially the same.
When the signals between the single chip microcomputer 103 and the falling-off detection sub-circuit 102 are not matched, the signals can be identified only through level conversion.
Therefore, the electrode sheet drop-out detection device further includes: and the level conversion circuit is connected between the target output end of the falling detection circuit 102 and the singlechip 103. Since the target output terminal of the drop detection circuit 102 outputs the TTL level, the single chip microcomputer 103 can recognize the logic level through the conversion of the level conversion circuit. The structure of the level shift circuit is shown in fig. 8, and will not be described in detail here.
Since the logic of the logic level output from the target output terminal of the drop-off detection circuit 102 is reversed after passing through the level conversion circuit, the single chip microcomputer indicates that the electrode tab is not dropped when detecting that a low level is generated within 25us from the start of the positive pulse, and indicates that the electrode tab is dropped if the logic level is always a high level. And in other time periods, judgment is not made so as to avoid misjudgment.
The embodiment of the utility model provides an in one or more technical scheme, following technological effect or advantage have at least:
the utility model provides a pair of electrode slice detection device that drops, include: an electrical stimulation pulse control circuit comprising: the first voltage-controlled current source control sub-circuit, the second voltage-controlled current source control sub-circuit, the positive pulse control sub-circuit, the negative pulse control sub-circuit and the H bridge switch, wherein the H bridge switch comprises a first group of switches and a second group of switches, the first voltage-controlled current source control sub-circuit and the positive pulse control sub-circuit are respectively connected to two ends of the first group of switches, the second voltage-controlled current source control sub-circuit and the negative pulse control sub-circuit are connected to two ends of the second group of switches, a first detection point is arranged between the first voltage-controlled current source control sub-circuit and the first group of switches, or a second detection point is arranged between the second voltage-controlled current source control sub-circuit and the second group of switches; the detection circuitry that drops, connect first check point or second check point, should drop detection circuitry includes: a first comparator; and the singlechip is connected with the target output end of the falling detection circuit and is used for judging whether the electrode plate falls or not according to the level signal displayed by the singlechip.
Example two
Based on the same inventive concept, the embodiment of the utility model also provides a medical instrument, and the medical instrument comprises the electrode plate falling detection device in the first embodiment.
The medical apparatus can be pelvic floor muscle rehabilitation instrument, abdominal rectus muscle treatment instrument and intermediate frequency physiotherapy instrument.
Of course, other medical devices that use pulse signals and that use electrode pads or electric shock rods are also possible and are not listed here.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. An electrode plate drop detection device, characterized by comprising:
an electrical stimulation pulse control circuit comprising: the high-speed current source circuit comprises a first voltage-controlled current source control sub-circuit, a second voltage-controlled current source control sub-circuit, a first pulse control sub-circuit, a second pulse control sub-circuit and an H-bridge switch, wherein the H-bridge switch comprises a first group of switches and a second group of switches, the first voltage-controlled current source control sub-circuit and the first pulse control sub-circuit are respectively connected to two ends of the first group of switches, the second voltage-controlled current source control sub-circuit and the second pulse control sub-circuit are connected to two ends of the second group of switches, a first detection point is arranged between the first voltage-controlled current source control sub-circuit and the first group of switches, or a second detection point is arranged between the second voltage-controlled current source control sub-circuit and the second group of switches;
a drop detection circuit connected to the first detection point or the second detection point, the drop detection circuit including: a first comparator;
and the singlechip is connected with the target output end of the falling detection circuit.
2. The electrode sheet drop-out detecting device according to claim 1, wherein the drop-out detecting circuit is a drop-out detecting sub-circuit of a plurality of channels, the drop-out detecting sub-circuit of each channel including detecting channels for two electrode sheets.
3. The electrode sheet drop-out detection device according to claim 2, wherein inverting input terminals of the first comparators of the drop-out detection sub-circuits of the plurality of channels are connected in parallel and share a voltage dividing circuit.
4. The electrode sheet drop detection device according to claim 1, further comprising: a level conversion circuit;
the level conversion circuit is connected between the target output end of the falling detection circuit and the single chip microcomputer.
5. The electrode sheet drop-out detection device according to claim 1, wherein the first voltage-controlled source control sub-circuit includes: the second comparator, the first current sampling resistor and the first negative feedback resistor;
a first reverse input end of the second comparator is connected with one end of the first negative feedback resistor, one end of the first current sampling resistor is connected with the other end of the first negative feedback resistor, the other end of the first current sampling resistor is grounded, and a first positive input end of the second comparator is connected with the analog voltage input module;
the second voltage controlled source control sub-circuit comprises: the third comparator, the second current sampling resistor and the second negative feedback resistor;
the second reverse input end of the third comparator is connected with one end of the second negative feedback resistor, one end of the second current sampling resistor is connected with the other end of the second negative feedback resistor, the other end of the second current sampling resistor is grounded, and the second positive input end of the third comparator is connected with the analog voltage input module.
6. The electrode-sheet drop detection device according to claim 1, wherein the first pulse control sub-circuit includes: a first base electrode of the first triode is used as a first input end of the first pulse control sub-circuit, the first input end is connected with the level control module, a first source electrode of the first triode is grounded, and a first drain electrode is used as a first output end of the first pulse control sub-circuit and is connected with the first group of switches;
the second pulse control sub-circuit includes: and a second base electrode of the second triode is used as a second input end of the second pulse control sub-circuit, the second input end is connected with the level control module, a second source electrode of the second triode is grounded, and a second drain electrode is used as a second output end of the second pulse control sub-circuit and is connected with the second group of switches.
7. The electrode sheet drop-out detecting device according to claim 1, wherein the first set of switches includes: a first switch and a third switch;
the second set of switches comprises: a second switch and a fourth switch, wherein,
further comprising: a first electrode slice of the first switch and a second electrode slice of the third switch are connected between the first switch and the third switch;
between the second switch and the fourth switch, the first electrode plate is connected with the second switch, and the second electrode plate is connected with the fourth switch.
8. The electrode sheet drop-out detection device according to claim 7, further comprising: and two ends of the capacitor are respectively and correspondingly connected to the first electrode plate and the second electrode plate.
9. A medical device comprising the electrode-piece-fall detection device according to any one of claims 1 to 8.
10. The medical device according to claim 9, wherein the medical device is in particular any one of the following:
pelvic floor muscle rehabilitation instrument, rectus abdominis therapeutic instrument and intermediate frequency physiotherapy instrument.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116492590A (en) * | 2023-06-27 | 2023-07-28 | 大悦创新（苏州）医疗科技股份有限公司 | Electrode slice falling detection method and electric stimulation equipment |
| CN117269842A (en) * | 2023-11-20 | 2023-12-22 | 苏州新云医疗设备有限公司 | Electrode drop detection circuit and equipment |
| CN117907688A (en) * | 2023-12-22 | 2024-04-19 | 苏州新云医疗设备有限公司 | Impedance detection circuit, impedance detection method and electronic equipment |
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- 2022-05-18 CN CN202221190151.4U patent/CN217360262U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116492590A (en) * | 2023-06-27 | 2023-07-28 | 大悦创新（苏州）医疗科技股份有限公司 | Electrode slice falling detection method and electric stimulation equipment |
| CN116492590B (en) * | 2023-06-27 | 2023-09-12 | 大悦创新（苏州）医疗科技股份有限公司 | Electrode slice falling detection method and electric stimulation equipment |
| CN117269842A (en) * | 2023-11-20 | 2023-12-22 | 苏州新云医疗设备有限公司 | Electrode drop detection circuit and equipment |
| CN117269842B (en) * | 2023-11-20 | 2024-04-23 | 苏州新云医疗设备有限公司 | Electrode drop detection circuit and equipment |
| CN117907688A (en) * | 2023-12-22 | 2024-04-19 | 苏州新云医疗设备有限公司 | Impedance detection circuit, impedance detection method and electronic equipment |
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