CN209790620U - Defibrillation pulse output circuit and defibrillator with same - Google Patents
Defibrillation pulse output circuit and defibrillator with same Download PDFInfo
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- CN209790620U CN209790620U CN201822192896.4U CN201822192896U CN209790620U CN 209790620 U CN209790620 U CN 209790620U CN 201822192896 U CN201822192896 U CN 201822192896U CN 209790620 U CN209790620 U CN 209790620U
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Abstract
The utility model discloses a defibrillation pulse output circuit and have its defibrillator, defibrillation pulse output circuit includes drive circuit and the change over switch and the H bridge switch circuit that link to each other, H bridge switch circuit includes first switch, the second switch, third switch and fourth switch, change over switch, first switch, the second switch, the at least part of third switch and fourth switch is the high pressure MOS pipe, drive circuit is used for controlling change over switch, first switch, the second switch, the switching of third switch and fourth switch is in order to realize the output of waveform of defibrillating. The utility model discloses an embodiment utilizes high-pressure MOS pipe to replace the relay, can export the waveform of defibrillating of higher voltage, more accurate time control.
Description
Technical Field
The utility model relates to a medical field especially relates to a defibrillation pulse output circuit and have its defibrillator.
Background
According to the heart alliance statistics of the world, 1 of 3 people die of cardiovascular diseases all over the world. In daily life, various cardiovascular diseases such as: coronary heart disease, cardiomyopathy, acute myocardial infarction, valvular disease, diabetes and the like, or ventricular fibrillation can be caused by improper medication, electrolyte imbalance, sick sinus syndrome, low temperature and the like, so that arrhythmia or sudden cardiac arrest is caused. If the treatment is not available within a short time, the life of the patient is seriously threatened. Early electrical defibrillation is critical to cardiac arrest, and the survival rate of a patient is inversely proportional to the time waiting for defibrillation, with the shorter the wait time (in seconds), the higher the survival rate.
The existing defibrillator outputs the defibrillation waveform through the relay, and the relay has the defects of long delay time (about 10ms), intolerance to high voltage (only supporting the voltage below 250 ACV) and the like, so that the relay is not a good choice as an actuating element for the defibrillator which requires the high voltage to be more than 270DCV and the delay time to be in a microsecond level.
Disclosure of Invention
An object of the utility model is to provide a defibrillation pulse output circuit and have its defibrillator.
In order to achieve one of the above objects of the present invention, an embodiment of the present invention provides a defibrillation pulse output circuit, including: the high-voltage defibrillator comprises a driving circuit, a change-over switch and an H-bridge switch circuit, wherein the change-over switch and the H-bridge switch circuit are connected with each other, the H-bridge switch circuit comprises a first switch, a second switch, a third switch and a fourth switch, at least parts of the change-over switch, the first switch, the second switch, the third switch and the fourth switch are high-voltage MOS (metal oxide semiconductor) tubes, and the driving circuit is used for controlling the change-over switch, the first switch, the second switch, the third switch and the fourth switch to be switched on and switched off so as to achieve output of defibrillation waveforms.
As a further improvement of an embodiment of the present invention, the switch, the first switch, the second switch, the third switch and the fourth switch are all high voltage MOS transistors, the first switch and the third switch are connected in series to form a first switch group, the second switch and the fourth switch are connected in series to form a second switch group, the first switch group and the second switch group are connected in parallel, the midpoint of the first switch group is a first output end, the middle point of the second switch group is a second output end, the joint point of the first switch and the second switch is connected with the change-over switch, the joint point of the third switch and the fourth switch is grounded, when the change-over switch, the first switch and the fourth switch are conducted and the second switch and the third switch are not conducted, the first output end and the second output end output negative pulse defibrillation waveforms; when the change-over switch, the second switch and the third switch are conducted and the first switch and the fourth switch are not conducted, the first output end and the second output end output a positive pulse defibrillation waveform.
As an embodiment of the present invention, the driving circuit includes control the first driving circuit of the switch, the first driving circuit includes the first triode receiving the first driving signal and is located the output of the first triode reaches the first driver chip between the gate of the switch, when the first driving signal is high level, the first triode switches on and passes through the first driver chip drives the switch switches on, when the first driving signal is low level, the first triode reaches the switch does not switch on.
As an implementation mode of the present invention is further improved, the output end of the first triode is connected with a first indicator light, and when the first driving signal is at a high level, the first triode is turned on, and the first indicator light is turned on.
As a further improvement of an embodiment of the present invention, the first driving circuit further includes a first light emitting coupling unit located between the output end of the first triode and the first driving chip, the first light emitting coupling unit is used for transmitting the electric signal output by the first triode to the first driving chip after the electric signal-optical signal-electric signal conversion.
As a further improvement of an embodiment of the present invention, the first driving chip comprises a first high level input pin connected to the output end of the first light emitting coupling unit, a first input driving pin for controlling the first high level input pin to operate, a first input energy storage capacitor for driving the first input driving pin, a first high level output pin connected to the gate of the switch, a first output driving pin for controlling the first high level output pin to operate, a first output diode for driving the first output driving pin, and a first output energy storage capacitor, when the first driving signal is at a high level, the first high-level input pin receives a signal to drive the first high-level output pin to output a signal to the gate of the switch, and the switch is turned on.
As a further improvement of an embodiment of the present invention, the driving circuit includes a second driving circuit and a third driving circuit, the second driving circuit drives one of the switches of the first switch assembly to be turned on, wherein the other switch is not turned on, and the third driving circuit drives one of the switches of the second switch assembly to be turned on, wherein the other switch is not turned on.
As a further improvement of an embodiment of the present invention, the second driving circuit includes a second triode receiving the second driving signal and a second driving chip located between the gate of the second triode and the first switch and the gate of the third switch, when the second driving signal is high level, the second triode is conducted and passes through the second driving chip driving the first switch is conducted, the third switch is not conducted, when the second driving signal is low level, the second triode reaches the first switch is not conducted, the second driving chip drives the third switch to be conducted.
As an improvement of an embodiment of the present invention, the output end of the second triode is connected with a second indicator light, and when the second driving signal is at a high level, the second triode is turned on, and the second indicator light is turned on.
As a further improvement of an embodiment of the present invention, the second driving circuit further includes a second light-emitting coupling unit located between the output end of the second triode and the second driving chip, the second light-emitting coupling unit is used for transmitting the electrical signal output by the second triode to the second driving chip after the transformation of "electrical signal-optical signal-electrical signal".
As a further improvement of an embodiment of the present invention, the second driving chip includes a second high level input pin connected to the first output terminal of the second light emitting coupling unit, a second low level input pin connected to the second output terminal of the second light emitting coupling unit, a second input driving pin for controlling the second high level input pin and the second low level input pin to operate, a second input energy storage capacitor for driving the second input driving pin, a second high level output pin connected to the gate of the first switch, a second low level output pin connected to the gate of the third switch, a second output driving pin for controlling the second high level output pin and the second low level output pin, a second output diode for driving the second output driving pin, and a second output energy storage capacitor, when the second driving signal is at a high level, the second high-level input pin receives a signal to drive the second high-level output pin to output a signal to the gate of the first switch, the first switch is turned on, meanwhile, the second low-level input pin is grounded, and the third switch is turned off; when the second driving signal is at a low level, the second high-level input pin does not work, the first switch is not conducted, meanwhile, the second driving chip drives the second low-level output pin to output a signal to the grid electrode of the third switch, and the third switch is conducted.
In order to achieve one of the above objects, an embodiment of the present invention provides a defibrillator, including the defibrillation pulse output circuit according to any one of the above technical solutions.
Compared with the prior art, the utility model discloses an embodiment's beneficial effect lies in: the utility model discloses an embodiment utilizes high pressure MOS pipe to replace the relay, can export the waveform of defibrillating of higher voltage (can reach direct current 1000V), more accurate time (1 microsecond) control.
Drawings
Fig. 1 is a schematic diagram of a defibrillation pulse output circuit according to an embodiment of the present invention;
Fig. 2 is a schematic diagram of a first driving circuit according to an embodiment of the present invention;
Fig. 3 is a schematic diagram of a second driving circuit according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments are not intended to limit the present invention, and structural, methodical, or functional changes that may be made by one of ordinary skill in the art based on these embodiments are all included in the scope of the present invention.
An embodiment of the present invention provides a defibrillator for realizing the output of defibrillation waveforms, the defibrillator including a defibrillation pulse output circuit 100.
Referring to fig. 1, defibrillation pulse output circuit 100 includes a driver circuit and associated switch SW5 and an H-bridge switch circuit.
The input end of the switch SW5 is connected with a diode D1 and an energy storage capacitor C1 which are connected in parallel, and the energy storage capacitor C1 is grounded.
The H-bridge switch circuit includes a first switch SW1, a second switch SW2, a third switch SW3, and a fourth switch SW 4.
Specifically, the first switch SW1 and the third switch SW3 are connected in series to form a first switch group SW1& SW3, the second switch SW2 and the fourth switch SW4 are connected in series to form a second switch group SW2& SW4, the first switch group SW1& SW3 and the second switch group SW2& SW4 are connected in parallel, a middle point of the first switch group SW1& SW3 is a first output end P1, a middle point of the second switch group SW2& SW4 is a second output end P2, a joint point of the first switch SW1 and the second switch SW2 is connected with the switching switch SW5, and a joint point of the third switch SW3 and the fourth switch SW4 is grounded.
In the present embodiment, at least a portion of the switch SW5, the first switch SW1, the second switch SW2, the third switch SW3 and the fourth switch SW4 are high voltage MOS transistors, and the driving circuit is configured to control the on/off of the switch SW5, the first switch SW1, the second switch SW2, the third switch SW3 and the fourth switch SW4 to output the defibrillation waveform.
Specifically, the switch SW5, the first switch SW1, the second switch SW2, the third switch SW3 and the fourth switch SW4 of the present embodiment are all high voltage MOS transistors, and when the switch SW5, the first switch SW1 and the fourth switch SW4 are turned on and the second switch SW2 and the third switch SW3 are turned off, the first output terminal P1 and the second output terminal P2 output negative pulse defibrillation waveforms; when the switch SW5, the second switch SW2 and the third switch SW3 are turned on and the first switch SW1 and the fourth switch SW4 are turned off, the first output terminal P1 and the second output terminal P2 output positive defibrillation waveforms.
According to the embodiment, the high-voltage MOS tube is used for replacing a relay, and the defibrillation waveform controlled by higher voltage (up to 1000V direct current) and more accurate time (1 microsecond) can be output.
In this embodiment, referring to fig. 2, the driving circuit includes a first driving circuit 10 for controlling the switch, the first driving circuit 10 includes a first transistor T1 for receiving a first driving signal S1, and a first driving chip U1 disposed between an output terminal of the first transistor T1 and a gate 51 of the switch SW5, wherein when the first driving signal S1 is at a high level, the first transistor T1 is turned on and drives the switch SW5 to be turned on through the first driving chip U1, and when the first driving signal S1 is at a low level, the first transistor T1 and the switch SW5 are turned off.
The output end of the first triode T1 is connected with a first indicator light L1, and when the first driving signal S1 is at a high level, the first triode T1 is turned on, and the first indicator light L1 is turned on.
Here, the first indicator light L1 is a light emitting diode, and the first indicator light L1 may be used to indicate the on/off of the switch SW5, which greatly improves user experience.
The first driving circuit 10 further includes a first light emitting coupling unit C1 located between the output terminal of the first transistor T1 and the first driving chip U1, and the first light emitting coupling unit C1 is configured to transmit the electrical signal output by the first transistor T1 to the first driving chip U1 after being converted from "electrical signal-optical signal-electrical signal".
Here, the first light coupling unit C1 includes a first light emitting diode LED1 and a first coupling transistor G1 coupled to each other, two ends of the first light emitting diode LED1 are respectively connected to an output terminal of the first transistor T1 and the first indicator light L1, an output terminal of the first coupling transistor G1 is connected to the first driving chip U1, when the first driving signal S1 is at a high level, the first light emitting diode LED1 is turned on to emit photons to a gate of the first coupling transistor G1, and the first coupling transistor G1 is turned on to enable the output terminal of the first coupling transistor G1 to output a signal.
It can be understood that the first light emitting diode LED1 can convert the electrical signal output by the first transistor T1 into an optical signal, and then convert the optical signal into the electrical signal through the first coupling transistor G1 and transmit the electrical signal to the first driving chip U1, because the left side of the first light emitting coupling unit C1 is a weak electrical signal region and the right side of the first light emitting coupling unit C1 is a strong electrical signal region, through the conversion of the first light emitting coupling unit C1, electromagnetic signals with different intensities on the left and right sides of the first light emitting coupling unit C1 can be effectively isolated, so as to avoid mutual interference.
The first driver chip U1 may be an IR2108 chip.
The first driving chip U1 includes a left circuit board and a right circuit board.
At the left circuit board, the first driver chip U1 includes a first high level input pin HIN1 connected to the output terminal of the first light emitting coupling unit C1, a first input terminal driving pin (including a grounded first input terminal ground pin COM1 and a first input terminal power pin VCC1 connected to a power supply) for controlling the operation of the first high level input pin HIN1, and a first input terminal energy storage capacitor C11 for driving the first input terminal driving pin.
At the right circuit board, the first driver chip U1 includes a first high level output pin HO1 connected to the gate of the switch SW5, a first output driver pin controlling the operation of the first high level output pin HO1, a first output diode D12 driving the first output driver pin, and a first output energy storage capacitor C12, where the first output driver pin includes a first output reference pin VB1 and a first output power pin VS1 connected to two ends of the first output energy storage capacitor C12.
When the first driving signal S1 is at a high level, the first high level input pin HIN1 receives a signal to drive the first high level output pin HO1 to output a signal to the gate of the switch SW5, and the switch SW5 is turned on; when the first driving signal S1 is at a low level, the switch SW5 is not conductive.
Specifically, when the first driving signal S1 is at a high level, the first triode T1 is turned on to output an electrical signal to the first light-emitting coupling unit C1, the first light-emitting coupling unit C1 transmits the converted electrical signal to the first high-level input pin HIN1, since the first input end ground pin COM1 is grounded, the first input end power pin VCC1 is connected to a 15V power supply voltage, a capacitor is stored in the first input end energy storage capacitor C11, the left circuit board is in a working state at this time, a capacitor is also stored in the first output end energy storage capacitor C12, the right circuit board is also in a working state at this time, the first high-level input pin HIN1 receives a signal to drive the first high-level output pin HO1 to output a signal to the gate of the switch SW5, and the switch SW5 is turned on; when the first driving signal S1 is at a low level, the first transistor T1 is not turned on, and the switch SW5 is also not turned on.
Here, the drain 52 and the source 53 of the switch SW5 are defined as two contacts of the switch, respectively, and when a certain current is injected into the gate 51 of the switch SW5, the drain 52 and the source 53 are turned on to turn on the switch SW 5.
In addition, when the switch SW5 is turned on, the high voltage at the drain 52 is transmitted to the source 53, and in order to ensure that the switch SW5 is kept in the on state, the high voltage needs to be provided to the gate 51 in real time, here, the first output end diode D12 and the first output end energy storage capacitor C12 are arranged to ensure that the voltage at the gate 51 is always higher than the source 53, and thus the switch SW5 is kept in the on state.
In this embodiment, the first driving circuit 10 further includes a plurality of resistors, which mainly include a current limiting resistor and a pull-down resistor, the current limiting resistor includes a first resistor R1 located at an input end of the first triode T1, a second resistor R2 and a third resistor R3 located between the first indicator light L1 and the first light emitting diode LED1, and a fourth resistor R4 located between the first high-level output pin HO1 and the gate of the switch SW5, the pull-down resistor includes a fifth resistor R5 located between the first high-level input pin HIN1 and the ground, and the fifth resistor R5 is used to reset the voltage at the first high-level input pin HIN1, of course, the first driving circuit 10 may be designed for other circuits, and may be determined according to actual situations.
In this embodiment, referring to fig. 3, the driving circuit includes a second driving circuit 20 and a third driving circuit.
the second driving circuit 20 drives one of the switches of the first switch elements SW1& SW3 to be conductive, wherein the other switch is non-conductive, and the third driving circuit drives one of the switches of the second switch elements SW2& SW4 to be conductive, wherein the other switch is non-conductive.
Here, the output of the negative defibrillation waveform and the positive defibrillation waveform can be realized through the control of the second driving circuit 20 and the third driving circuit, when the switch SW5 is turned on, and when the second driving circuit 20 drives the first switch SW1 to be turned on and the third switch SW3 to be turned off, the third driving circuit needs to drive the fourth switch SW4 to be turned on and the second switch SW2 to be turned off simultaneously, and at this time, the first output end P1 and the second output end P2 output the negative defibrillation waveform; when the second driving circuit 20 drives the first switch SW1 to be non-conductive and the third switch SW3 to be conductive, the third driving circuit needs to simultaneously drive the fourth switch SW4 to be non-conductive and the second switch SW2 to be conductive, and at this time, the first output terminal P1 and the second output terminal P2 output positive defibrillation waveforms.
Taking the second driving circuit 20 as an example, the second driving circuit 20 includes a second transistor T2 receiving the second driving signal S2, and a second driving chip U2 located between the gates of the second transistor T2 and the first switch SW1, and the gate of the third switch SW3, when the second driving signal S2 is at a high level, the second transistor T2 is turned on and drives the first switch SW1 to be turned on through the second driving chip U2, the third switch SW3 is turned off, and when the second driving signal S2 is at a low level, the second transistor T2 and the first switch SW1 are turned off, and the second driving chip U2 drives the third switch SW3 to be turned on.
The output end of the second triode T2 is connected with a second indicator light L2, when the second driving signal S2 is at a high level, the second triode T2 is turned on, and the second indicator light L2 is turned on.
Here, the second indicator light L2 is a light emitting diode, and the second indicator light L2 may be used to indicate the opening and closing of each switch of the first switch group SW1& SW3, which greatly improves user experience.
The second driving circuit 20 further includes a second light-emitting coupling unit C2 located between the output terminal of the second transistor T2 and the second driving chip U2, and the second light-emitting coupling unit C2 is configured to convert the electrical signal output by the second transistor T2 into an "electrical signal-optical signal-electrical signal" and transmit the converted electrical signal to the second driving chip U2.
Here, the second light emitting coupling unit C2 includes a second light emitting diode LED2 and a second coupling transistor G2 coupled to each other, and a third light emitting diode LED3 and a third coupling transistor G3 coupled to each other.
The second light emitting diode LED2 and the third light emitting diode LED3 are connected in series and are both connected to the output terminal of the second triode T2, the output terminals of the second coupling triode G2 and the third coupling triode G3 are connected to the second driving chip U2, when the second driving signal S2 is at a high level, the second light emitting diode LED2 is turned on to emit photons to the gate of the second coupling triode G2, the third light emitting diode LED3 is turned on to emit photons to the gate of the third coupling triode G3, and the second coupling triode G2 and the third coupling triode G3 are both in a conducting state.
It can be understood that the second light emitting diode LED2 and the third light emitting diode LED3 can convert the electrical signal output by the second triode T2 into an optical signal, and then the optical signal is converted into an electrical signal by the second coupling triode G2 and the third coupling triode G3 and transmitted to the second driving chip U2, because the left side of the second light emitting coupling unit C2 is a weak electrical signal region, and the right side of the second light emitting coupling unit C2 is a strong electrical signal region, electromagnetic signals with different intensities on the left and right sides of the second light emitting coupling unit C2 can be effectively isolated by the conversion of the second light emitting coupling unit C2, so as to avoid mutual interference.
The second driver chip U2 may be an IR2108 chip.
The second driving chip U2 includes a left circuit board and a right circuit board.
At the left circuit board, the second driver chip U2 includes a second high-level input pin HIN2 connected to the first output terminal of the second light-emitting coupling unit C2 (i.e., the output terminal of the second coupling transistor G2), a second low-level input pin/LIN 2 connected to the second output terminal of the second light-emitting coupling unit C2 (i.e., the output terminal of the third coupling transistor G3), a second input driver pin (including a grounded second input ground pin COM2 and a power supply-connected second input power pin VCC2) for controlling the operation of the second high-level input pin HIN2 and the second low-level input pin/LIN 2, and a second input energy-storing capacitor C21 for driving the second input driver pin.
At the right side circuit board, the second driver chip U2 includes a second high level output pin HO2 connected to the gate of the first switch SW1, a second low level output pin LO2 connected to the gate of the third switch SW3, a second output driver pin controlling the second high level output pin HO2 and the second low level output pin LO2, a second output diode D22 driving the second output driver pin, and a second output energy storage capacitor C22, where the second output driver pin includes a second output reference pin VB2 and a second output power supply pin VS2 connected to both ends of the second output energy storage capacitor C22.
When the second driving signal S2 is at a high level, the second high-level input pin HIN2 receives a signal to drive the second high-level output pin HO2 to output a signal to the gate of the first switch SW1, the first switch SW1 is turned on, meanwhile, the second low-level input pin/LIN 2 is grounded, and the third switch SW3 is turned off; when the second driving signal S2 is at a low level, the second high input pin HIN2 is not activated, the first switch SW1 is turned off, and meanwhile, the second driving chip U2 drives the second low output pin/LIN 2 to output a signal to the gate of the third switch SW3, and the third switch SW3 is turned on.
Specifically, when the second driving signal S2 is at a high level, the second transistor T2 is turned on and outputs a signal to the second light-emitting coupling unit C2, at this time, the second coupling transistor G2 and the third coupling transistor G3 are both turned on, the second low-level input pin/LIN 2 is grounded, the second light-emitting coupling unit C2 transmits the converted electrical signal to the second high-level input pin HIN2, since the second input ground pin COM2 is grounded, the second input power pin VCC2 is connected to a 15V power voltage, a capacitor is stored in the second input energy-storing capacitor C21, the left circuit board is in a working state, a capacitor is also stored in the second output energy-storing capacitor C22, the right circuit board is also in a working state, the second high-level input pin HIN2 receives a signal to drive the second high-level output pin HO2 to output a signal to the gate of the first switch 1, and the first switch SW1 is turned on, the second low level output pin LO2 has no output, and the third switch SW3 is non-conductive; when the second driving signal S2 is at a low level, the second transistor T2 is turned off, the second high-level output pin HO2 does not output, the first switch SW1 is turned off, and the second driving chip U2 can activate the second low-level input pin/LIN 2, so as to drive the second low-level output pin LO2 to output a signal to the gate of the third switch SW3, and the third switch SW3 is turned on.
Here, the source 13 of the first switch SW1 is connected to the drain 32 of the third switch SW3, a high voltage output point P3 is provided between the source 13 of the first switch SW1 and the drain 32 of the third switch SW3, the drain 12 of the first switch SW1 is connected to a high voltage, and the source 33 of the third switch SW3 is grounded.
In this embodiment, the second driving circuit 20 further includes a plurality of resistors, which mainly include a current limiting resistor and a pull-down resistor, where the current limiting resistor includes a sixth resistor R6 located at an input end of the second triode T2, a seventh resistor R7 located between the second indicator light L2 and the +5V power supply, an eighth resistor R8 located between an output end of the second triode T2 and the second light emitting diode LED2, a ninth resistor R9 located between an output end of the second triode T2 and the third light emitting diode LED3, a tenth resistor R10 located between the second high level output pin HO2 and the gate of the first switch SW1, and an eleventh resistor R11 located between the second low level output pin LO2 and the gate of the third switch SW3, and of course, the second driving circuit 20 may be designed in other circuit, and may be determined according to actual circumstances.
The structure of the third driving circuit can refer to the second driving circuit 20, and is not described herein.
In summary, the defibrillation pulse output circuit 100 of the present embodiment uses the high voltage MOS transistor to replace the relay, so as to output a defibrillation waveform controlled by a higher voltage (up to 1000V dc) and a more precise time (1 microsecond), and the defibrillation pulse output circuit 100 can effectively avoid signal interference by arranging the light emitting coupling unit.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (12)
1. A defibrillation pulse output circuit, comprising: the high-voltage defibrillator comprises a driving circuit, a change-over switch and an H-bridge switch circuit, wherein the change-over switch and the H-bridge switch circuit are connected with each other, the H-bridge switch circuit comprises a first switch, a second switch, a third switch and a fourth switch, at least parts of the change-over switch, the first switch, the second switch, the third switch and the fourth switch are high-voltage MOS (metal oxide semiconductor) tubes, and the driving circuit is used for controlling the change-over switch, the first switch, the second switch, the third switch and the fourth switch to be switched on and switched off so as to achieve output of defibrillation waveforms.
2. The defibrillation pulse output circuit of claim 1, wherein the switch, the first switch, the second switch, the third switch, and the fourth switch are all high voltage MOS transistors, the first switch and the third switch are connected in series to form a first switch group, the second switch and the fourth switch are connected in series to form a second switch group, the first switch group and the second switch group are connected in parallel, the midpoint of the first switch group is a first output end, the middle point of the second switch group is a second output end, the joint point of the first switch and the second switch is connected with the change-over switch, the joint point of the third switch and the fourth switch is grounded, when the change-over switch, the first switch and the fourth switch are conducted and the second switch and the third switch are not conducted, the first output end and the second output end output negative pulse defibrillation waveforms; when the change-over switch, the second switch and the third switch are conducted and the first switch and the fourth switch are not conducted, the first output end and the second output end output a positive pulse defibrillation waveform.
3. The defibrillation pulse output circuit of claim 2, wherein the driving circuit includes a first driving circuit for controlling the switch, the first driving circuit includes a first transistor for receiving a first driving signal, and a first driving chip disposed between an output terminal of the first transistor and a gate of the switch, the first transistor is turned on and drives the switch to be turned on through the first driving chip when the first driving signal is at a high level, and the first transistor and the switch are turned off when the first driving signal is at a low level.
4. The defibrillation pulse output circuit of claim 3, wherein a first indicator light is connected to an output terminal of the first transistor, and when the first driving signal is at a high level, the first transistor is turned on, and the first indicator light is turned on.
5. The defibrillation pulse output circuit of claim 3, wherein the first driving circuit further comprises a first light emitting coupling unit located between the output terminal of the first triode and the first driving chip, and the first light emitting coupling unit is configured to convert the electrical signal output by the first triode into an "electrical signal-optical signal-electrical signal" and transmit the converted electrical signal to the first driving chip.
6. the defibrillation pulse output circuit of claim 5, wherein the first driving chip comprises a first high level input pin connected to the output terminal of the first light emitting coupling unit, a first input driving pin for controlling the first high level input pin to operate, a first input energy storage capacitor for driving the first input driving pin, a first high level output pin connected to the gate of the switch, a first output driving pin for controlling the first high level output pin to operate, a first output diode for driving the first output driving pin, and a first output energy storage capacitor, wherein when the first driving signal is at a high level, the first high level input pin receives a signal to drive the first high level output pin to output a signal to the gate of the switch, the changeover switch is turned on.
7. The defibrillation pulse output circuit of claim 2, wherein the driving circuit includes a second driving circuit and a third driving circuit, the second driving circuit driving one of the switches of the first switch assembly to conduct, and the other switch to not conduct, and the third driving circuit driving one of the switches of the second switch assembly to conduct, and the other switch to not conduct.
8. The defibrillation pulse output circuit of claim 7, wherein the second driving circuit includes a second transistor receiving a second driving signal and a second driving chip located between the second transistor and a gate of the first switch and a gate of a third switch, the second transistor being conductive and driving the first switch to be conductive through the second driving chip when the second driving signal is at a high level, the third switch being non-conductive, and the second transistor and the first switch being non-conductive when the second driving signal is at a low level, the second driving chip driving the third switch to be conductive.
9. The defibrillation pulse output circuit of claim 8, wherein a second indicator light is connected to an output terminal of the second transistor, and when the second driving signal is at a high level, the second transistor is turned on and the second indicator light is turned on.
10. The defibrillation pulse output circuit of claim 8, wherein the second driving circuit further includes a second light-emitting coupling unit located between the output terminal of the second transistor and the second driving chip, and the second light-emitting coupling unit is configured to convert the electrical signal output by the second transistor into an "electrical signal-optical signal-electrical signal" and transmit the converted electrical signal to the second driving chip.
11. The defibrillation pulse output circuit of claim 10, wherein the second driving chip comprises a second high-level input pin connected to the first output terminal of the second light-emitting coupling unit, a second low-level input pin connected to the second output terminal of the second light-emitting coupling unit, a second input driving pin for controlling the operations of the second high-level input pin and the second low-level input pin, a second input energy-storing capacitor for driving the second input driving pin, a second high-level output pin connected to the gate of the first switch, a second low-level output pin connected to the gate of the third switch, a second output driving pin for controlling the second high-level output pin and the second low-level output pin, a second output diode for driving the second output driving pin, and a second output energy-storing capacitor, when the second driving signal is at a high level, the second high-level input pin receives a signal to drive the second high-level output pin to output a signal to the gate of the first switch, the first switch is turned on, meanwhile, the second low-level input pin is grounded, and the third switch is turned off; when the second driving signal is at a low level, the second high-level input pin does not work, the first switch is not conducted, meanwhile, the second driving chip drives the second low-level output pin to output a signal to the grid electrode of the third switch, and the third switch is conducted.
12. A defibrillator comprising a defibrillation pulse output circuit according to any one of claims 1-11.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822192896.4U CN209790620U (en) | 2018-12-25 | 2018-12-25 | Defibrillation pulse output circuit and defibrillator with same |
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| CN201822192896.4U CN209790620U (en) | 2018-12-25 | 2018-12-25 | Defibrillation pulse output circuit and defibrillator with same |
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| CN209790620U true CN209790620U (en) | 2019-12-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111359099A (en) * | 2018-12-25 | 2020-07-03 | 苏州景昱医疗器械有限公司 | Defibrillation pulse output circuit and defibrillator with same |
| CN115025396A (en) * | 2022-06-24 | 2022-09-09 | 深圳邦健生物医疗设备股份有限公司 | Current control dual-phase wave defibrillation device |
-
2018
- 2018-12-25 CN CN201822192896.4U patent/CN209790620U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111359099A (en) * | 2018-12-25 | 2020-07-03 | 苏州景昱医疗器械有限公司 | Defibrillation pulse output circuit and defibrillator with same |
| CN115025396A (en) * | 2022-06-24 | 2022-09-09 | 深圳邦健生物医疗设备股份有限公司 | Current control dual-phase wave defibrillation device |
| CN115025396B (en) * | 2022-06-24 | 2023-02-10 | 深圳邦健生物医疗设备股份有限公司 | Current control dual-phase wave defibrillation device |
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