Defibrillation discharge circuit, control method, defibrillator and storage medium
By introducing variable impedance modules and control modules into the defibrillation discharge circuit, the impedance value of the variable impedance module is directly controlled, which solves the complex, bulky and expensive problems of traditional circuits, and achieves the effect of simplifying the circuit, reducing costs and forming sawtooth waveforms.
Patent Information
- Application Number
- CN202311661093.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-06
- Publication Date
- 2025-06-06
AI Technical Summary
Traditional defibrillation discharge circuits use isolation devices, resulting in complex circuits, bulky, bulky and expensive.
By introducing a variable impedance module and a control module into the defibrillation discharge circuit, the power output end of the variable impedance module and the driving power output end of the control module are directly controlled to directly control the impedance value of the variable impedance module, thereby achieving the formation of a sawtooth waveform.
The defibrillation discharge circuit is simplified, the volume is reduced, the cost is reduced, and the effect of forming sawtooth waves in the defibrillation discharge waveform is achieved.
Smart Images
Figure CN120110355A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of medical electronic technology, and in particular to a defibrillation discharge circuit, a defibrillation discharge circuit control method, a defibrillator, and a computer-readable storage medium. Background Art
[0002] An external defibrillator is a device that applies electric pulses to the patient's skin (external electrodes) or exposed heart (internal electrodes) through electrodes, thereby achieving electrical defibrillation of the heart. It is used for first aid of patients with ventricular fibrillation, ventricular tachycardia, and suspected cardiac arrest. The basic principle of an external defibrillator is to first control the charging circuit to charge the high-voltage capacitor, and then control the discharge circuit to discharge the charge on the high-voltage capacitor to the patient for defibrillation. The duration of the external defibrillation electric pulse is generally 4 to 20ms, and the energy is within 40 to 360J (joules). The pulse power is as high as tens of kilowatts. The voltage amplitude is around 2000V.
[0003] At present, common defibrillation waveforms include unidirectional pulse, bidirectional shear exponential pulse, bidirectional square wave and sawtooth wave. Among them, the sawtooth wave is generated by setting multiple resistors in the discharge circuit, and short-circuiting one of the resistors at intervals. Each time a resistor is short-circuited, the current can be increased a little, forming a sawtooth waveform. The discharge circuit used to realize the sawtooth wave usually includes multiple transformers or optical isolators to control the switch discharge, which makes the defibrillation circuit complicated and the defibrillation equipment bulky and expensive. Summary of the invention
[0004] In view of this, embodiments of the present application provide a defibrillation discharge circuit, a defibrillation discharge circuit control method, a defibrillator, and a computer-readable storage medium to solve at least one problem existing in the background technology.
[0005] In a first aspect, an embodiment of the present application provides a defibrillation discharge circuit, including: a phase switching module, a variable impedance module, and a control module;
[0006] The phase-changing module includes a high-voltage power input terminal, a high-voltage power output terminal, a first discharge terminal and a second discharge terminal; the high-voltage power input terminal and the high-voltage power output terminal are respectively used to connect the positive electrode and the negative electrode of the high-voltage energy storage module; the first discharge terminal and the second discharge terminal are used to connect the discharge object between the positive electrode and the negative electrode of the high-voltage energy storage module to form a defibrillation discharge circuit; the phase-changing module is used to change the phase of the defibrillation discharge waveform;
[0007] The variable impedance module is connected to the defibrillation discharge circuit; the variable impedance module includes a power input terminal and a power output terminal;
[0008] The control module is used to control the impedance value of the variable impedance module to control the waveform of at least one phase of the waveform; the control module includes a driving power input terminal and a driving power output terminal;
[0009] When the variable impedance module is in working state, the power output terminal of the variable impedance module and the driving power output terminal of the control module are at the same potential.
[0010] In combination with the first aspect of the present application, in an optional implementation, the variable impedance module includes more than two resistors connected in series, and at least two power switches, and the at least two power switches are respectively connected in parallel with the more than two resistors.
[0011] In combination with the first aspect of the present application, in an optional embodiment, the control module is used to control the impedance value of the variable impedance module, including: controlling the conduction state of the at least two power switches, bypassing at least one of the two or more resistors in a predetermined order, and the two or more resistors have different potentials relative to the power supply output terminal; the predetermined order includes the order of the two or more resistors relative to the power supply output terminal from low to high.
[0012] In combination with the first aspect of the present application, in an optional embodiment, the control module includes: a driving unit, used to control the conduction state of the at least two power switches under the control of a control signal; the driving unit includes: at least two driving branches, respectively used to control the conduction state of the at least two power switches; the at least two driving branches are connected in parallel between the driving power input terminal and the driving power output terminal.
[0013] In combination with the first aspect of the present application, in an optional embodiment, at least one of the driving branches includes a first transistor, a first diode and a first resistor; the first transistor and the first diode are connected in series between the driving voltage and the control end of the power switch; and the first resistor is used to output a conduction voltage drop to the control end of the power switch.
[0014] In combination with the first aspect of the present application, in an optional embodiment, the variable impedance module and at least one power switch are connected in series between the first discharge end and the high voltage output end, and / or the variable impedance module and at least one power switch are connected in series between the second discharge end and the high voltage output end.
[0015] In combination with the first aspect of the present application, in an optional implementation, the variable impedance module is connected between the high voltage power output terminal and the negative electrode of the high voltage energy storage module.
[0016] In combination with the first aspect of the present application, in an optional implementation manner, the control module is further used to control the phase of the defibrillation waveform output by the phase switching module.
[0017] In a second aspect, an embodiment of the present application provides a defibrillation discharge circuit control method, wherein the defibrillation discharge circuit includes a phase switching module, a variable impedance module, and a control module; the variable impedance module includes a power input terminal and a power output terminal; the control module includes a driving power input terminal and a driving power output terminal; the method includes:
[0018] Controlling the phase switching module to be in a first working state, wherein the first working state corresponds to a first phase of a defibrillation discharge waveform;
[0019] Connecting the variable impedance module to the defibrillation discharge circuit; the variable impedance module includes more than two resistors connected in series;
[0020] Making the power supply output terminal of the variable impedance module and the driving power supply output terminal of the control module equal in potential;
[0021] Whether the two or more resistors are connected to the discharge circuit is controlled in a predetermined order.
[0022] In conjunction with the second aspect of the present application, in an optional implementation manner, the phase switching module is controlled to be in a second working state, and the second working state corresponds to a second phase of the defibrillation discharge waveform;
[0023] Connecting the variable impedance module to a defibrillation discharge circuit;
[0024] Whether the two or more resistors are connected to the discharge circuit is controlled in the predetermined order.
[0025] In combination with the second aspect of the present application, in an optional implementation, the two or more resistors have different potentials relative to the power supply output terminal; the predetermined order includes the order of the potentials of the two or more resistors relative to the power supply output terminal from low to high.
[0026] In a third aspect, an embodiment of the present application provides a sawtooth waveform control circuit, characterized in that it comprises: a variable impedance module, a control module and a discharge end connected to each other; the discharge end is used to discharge a discharge object to form a discharge loop;
[0027] The variable impedance module comprises: two or more resistors connected in series, respectively connected to a power input terminal and a power output terminal; at least two power switches, respectively connected in parallel to the two or more resistors;
[0028] The control module comprises: a driving unit, connected to the input end and the output end of the driving power supply respectively; when the variable impedance module is in a working state, the power output end of the variable impedance module and the driving power output end of the control module are at the same potential;
[0029] The control module is used to control the conduction state of the at least two power switches to bypass at least one of the two or more resistors in a predetermined order; the two or more resistors have different potentials relative to the power supply output terminal; the predetermined order includes the order of the two or more resistors relative to the power supply output terminal from low to high potential.
[0030] In combination with the third aspect of the present application, in an optional embodiment, the driving unit includes: at least two driving branches, respectively used to control the conduction state of the at least two power switches; the at least two driving branches are connected in parallel between the driving power input terminal and the driving power output terminal.
[0031] In conjunction with the third aspect of the present application, in an optional implementation, at least one of the driving branches includes a first transistor, a first diode and a first resistor; the first transistor and the first diode are connected in series between the driving power supply and the control end of the power switch; the first resistor is used to output a conduction voltage drop to the control end of the power switch. In a fourth aspect, an embodiment of the present application provides a defibrillator, including the defibrillation discharge circuit described in any one of the above aspects.
[0032] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the defibrillation discharge circuit control method described in any one of the above aspects are implemented.
[0033] The defibrillation discharge circuit, defibrillation discharge circuit control method, defibrillator and computer-readable storage medium provided in the embodiments of the present application make the power output terminal of the variable impedance module and the driving power output terminal of the control module equal in potential when the variable impedance module is in a working state, so that the control signal of the control module in a weak current environment can directly control the variable impedance module in a strong current environment, without using an isolation device to isolate the control module from the variable impedance module. By bypassing at least one of the at least two resistors in the variable impedance module in a predetermined order, a sawtooth wave is formed in at least one phase of the defibrillation discharge waveform. In this way, the technical problem that the conventional defibrillation discharge circuit using an isolation device leads to a complex circuit, a bulky and heavy volume and high cost is solved.
[0034] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0035] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:
[0036] Figure 1 A schematic diagram of a defibrillation discharge circuit provided in an embodiment of the present application Figure 1 ;
[0037] Figure 2 This is a defibrillation discharge waveform diagram in one embodiment of the present application;
[0038] Figure 3 A schematic diagram of a defibrillation discharge circuit provided in an embodiment of the present application Figure 2 ;
[0039] Figure 4 A schematic diagram of a defibrillation discharge circuit provided in an embodiment of the present application Figure 3 ;
[0040] Figure 5 A schematic diagram of a control module and a variable impedance module provided in an embodiment of the present application;
[0041] Figure 6 A schematic diagram of a defibrillation discharge circuit control method provided in one embodiment of the present application. DETAILED DESCRIPTION
[0042] In order to make the technical solutions and beneficial effects of the present application more obvious and understandable, the technical solutions in the embodiments of the present application are clearly and completely described below by listing specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.
[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.
[0044] It is understood that the terms "first", "second", etc. used in this application can be used to describe various elements in this article, but these elements are not limited by these terms. These terms are only used to distinguish the first element from another element. For example, without departing from the scope of this application, the first resistor can be referred to as the second resistor, and similarly, the second resistor can be referred to as the first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor. When describing "first", it does not mean that there must be a "second"; and when discussing "second", it does not mean that there must be a first element, component, area, layer or part in this application. When used here, the singular forms of "one", "one" and "said / the" may also be intended to include plural forms, unless the context clearly indicates otherwise. The meaning of "multiple" is more than two, unless otherwise clearly and specifically defined. It should also be understood that the term "including", when used in this specification, determines the presence of the features, but does not exclude the presence or addition of one or more other features. When used here, the term "and / or" includes any and all combinations of the relevant listed items.
[0045] It can be understood that in the context of this application, "connection" means that there is mutual transmission of electrical signals or data between the connected end and the connected end, which can be understood as "electrical connection", "communication connection", etc. In the context of this application, "A is directly connected to B" means that there are no other components between A and B except wires.
[0046] The present application embodiment provides a defibrillation discharge circuit, referring to Figure 1 , including: a phase-changing module 10, a variable impedance module 20, and a control module 30. The phase-changing module 10 includes a high-voltage power input terminal 101, a high-voltage power output terminal 102, a first discharge terminal 103, and a second discharge terminal 104. The high-voltage power input terminal 101 and the high-voltage power output terminal 102 are respectively used to connect the positive electrode and the negative electrode of the high-voltage energy storage module 01. The first discharge terminal 103 and the second discharge terminal 104 are used to connect the discharge object between the positive electrode and the negative electrode of the high-voltage energy storage module 01 to form a defibrillation discharge circuit. The discharge object is, for example, the patient's body or the patient's heart.
[0047] Optionally, the output voltage of the high-voltage energy storage module 01 is above 2KV, for example, 3KV. Optionally, the high-voltage energy storage module 01 samples a high-voltage capacitor. The capacitance of the high-voltage capacitor is tens to hundreds of microfarads, the maximum storage energy can reach 400 joules, and the voltage can reach several thousand volts. The electric shock process only takes a few milliseconds to tens of milliseconds.
[0048] The phase-changing module 10 is used to change the phase of the defibrillation discharge waveform. Optionally, the phase-changing module 10 adopts an H-bridge structure, which includes four branches. One end of the first branch is connected to the high-voltage power input terminal 101, and the other end of the first branch is connected to the first discharge terminal 103. One end of the second branch is connected to the first discharge terminal 103, and the other end of the second branch is connected to the high-voltage power output terminal 102. One end of the third branch is connected to the high-voltage power input terminal 101, and the other end of the third branch is connected to the second discharge terminal 104. One end of the fourth branch is connected to the second discharge terminal 104, and the other end of the fourth branch is connected to the high-voltage power output terminal 102. Each branch is connected in series with at least one power switch, such as Figure 1 As shown, switches S1 to S4 are connected in series in the first branch to the fourth branch respectively. In order to withstand high voltage, switches S1 to S4 use power switches, including insulated gate bipolar transistors (IGBTs), insulated gate field effect transistors (MOSs), power transistors (GTRs), silicon controlled rectifiers (SCRs), relays, etc.
[0049] By changing the phase of the defibrillation discharge waveform through the phase switching module 10, the output of a biphasic waveform can be achieved. Figure 2 A possible bi-phase waveform is shown, a square wave with a sawtooth waveform. It includes a positive part with an amplitude greater than zero and a negative part with an amplitude less than zero. The positive part has a sawtooth waveform. When switches S1 and S4 are closed, and switches S2 and S3 are disconnected, high voltage electricity flows out of the positive electrode of the high voltage energy storage module 01, flows in through the high voltage input terminal 101, and sequentially passes through S1, the first discharge terminal 103, the discharge object, the second discharge terminal 104, S4 and the variable impedance module 20, and returns to the negative electrode of the high voltage energy storage module 01, forming a discharge loop to generate one phase of the bi-phase waveform. When switch S1 and switch S4 are disconnected, and switch S2 and switch S3 are closed, high voltage electricity flows out from the positive electrode of the high voltage energy storage module 01, flows in through the high voltage power input terminal 101, and sequentially passes through S2, the second discharge terminal 104, the discharge object, the first discharge terminal 103, S3 and the variable impedance module 20, and returns to the negative electrode of the high voltage energy storage module 01, forming a discharge loop to generate another phase in the bi-phase waveform.
[0050] The variable impedance module 20 is connected to the defibrillation discharge circuit, and includes a power input terminal 201 and a power output terminal 202. The variable impedance module 20 is used to form a sawtooth waveform in a biphasic waveform. Figure 1 , Figure 3 and Figure 4 Possible access modes of the variable impedance module 20 are shown respectively. Figure 1 The variable impedance module 20 is connected between the high voltage output terminal 102 of the phase-changing module 10 and the negative electrode of the high voltage energy storage module 01 . Figure 2The variable impedance module 20 and at least one power switch are connected in series between the first discharge terminal 103 and the high voltage output terminal 102; and / or the variable impedance module 20 and at least one power switch are connected in series between the second discharge terminal 104 and the high voltage output terminal 102.
[0051] The control module 30 is used to control the impedance value of the variable impedance module 10 to control the waveform of at least one phase in the biphasic waveform. The control module 30 includes a driving power input terminal 301 and a driving power output terminal 302. By changing the impedance of the variable impedance module 20 during the discharge process, the impedance value of the variable impedance module 20 is reduced at predetermined intervals, so that the discharge current increases accordingly, thereby forming a sawtooth waveform.
[0052] The control module 30 is further used to control the conduction states of the switches S1 - S4 in the phase-changing module 10 to generate a two-phase square wave.
[0053] like Figure 1 As shown, when the variable impedance module 20 is connected between the high voltage output terminal 102 of the phase-changing module 10 and the negative electrode of the high voltage energy storage module 01, a sawtooth waveform of one or two phases in the bi-phase waveform can be realized. Specifically, when S1 and S4 are disconnected and S2 and S3 are closed, or when S1 and S4 are closed and S2 and S3 are disconnected, the impedance of the variable impedance module 20 is changed by the control module 30, and a sawtooth waveform in the positive or negative phase square wave in the bi-phase waveform can be formed; when S1 and S4 are disconnected and S2 and S3 are closed, or when S1 and S4 are closed and S2 and S3 are disconnected, the impedance of the variable impedance module 20 is changed by the control module 30, and a sawtooth waveform in the positive and negative phase square waves in the bi-phase waveform can be formed.
[0054] like Figure 2 and Figure 3 As shown, if the variable impedance module 20 is connected to the second branch or the fourth branch, the impedance of the variable impedance module 20 is changed by the control module 30, and a sawtooth waveform in the positive phase or negative phase square wave in the biphasic waveform can be formed. If the variable impedance module 20 is connected to the second branch or the fourth branch at the same time, the impedance of the variable impedance module 20 is changed by the control module 30, and a sawtooth waveform in the positive phase and negative phase square wave in the biphasic waveform can be formed.
[0055] When the variable impedance module 10 is in working state, its power output terminal 202 is at the same potential as the driving power output terminal 302 of the control module 30. Optionally, the driving power supply 40 voltage is 15V to 45V, for example, 30V. The working state refers to when the variable impedance module 10 is in a discharging state. Optionally, the power output terminal 202 and the driving power output terminal 302 of the control module 30 are both grounded to achieve the same potential.
[0056] By making the power output terminal of the variable impedance module and the driving power output terminal of the control module equal in potential when the variable impedance module is in a working state, the control signal of the control module in a weak current environment can directly control the variable impedance module in a strong current environment, without using an isolation device to isolate the control module from the variable impedance module. In this way, the technical problem that the traditional defibrillation discharge circuit using an isolation device leads to a complex circuit, a bulky and heavy volume, and high cost is solved.
[0057] The following describes the equipotential situation of the variable impedance module 10 and the control module 30 in different access modes. Figure 1 The variable impedance module 20 is connected between the high voltage power output terminal 102 of the phase-changing module 10 and the negative electrode of the high voltage energy storage module 01. The equipotential can be achieved by simply connecting the power output terminal 202 of the variable impedance module 20 to the driving power output terminal 302 of the control module 30, or grounding both.
[0058] refer to Figure 3 In the case where the variable impedance module 10 and the switch S3 are connected in series between the first discharge terminal 103 and the high voltage output terminal 102, when the second branch where the variable impedance module 20 is located is turned on and in the discharge state, the switch S3 is closed, and the power output terminal 202 of the variable impedance module 20 and the high voltage output terminal 102 are turned on and are at the same potential, so that the power output terminal 202 of the variable impedance module 20 and the driving power output terminal 302 of the control module 30 are at the same potential. Figure 4 In the case where the switch S3 and the variable impedance module 10 are connected in series between the first discharge terminal 103 and the high voltage power output terminal 102, when the second branch where the variable impedance module 20 is located is turned on and is in a discharge state, the power output terminal 202 of the variable impedance module 10 is connected to the high voltage power output terminal 102 of the phase change module 10, so that the power output terminal 202 and the driving power output terminal 302 of the control module 30 are at the same potential.
[0059] The equipotential principle when the variable impedance module 20 is in the fourth branch is the same as that when it is in the second branch, and will not be described in detail.
[0060] Before the defibrillation discharge circuit of the embodiment of the present application works, the high-voltage energy storage module 01 is first charged with electric energy. The working process of the defibrillation discharge circuit is as follows: Figure 1First, control S1 and S4 to close, S2 and S3 to conduct, high voltage electricity flows out from the positive electrode of the high voltage energy storage module 01, flows in through the high voltage input terminal 101, and sequentially passes through S1, the first discharge terminal 103, the discharge object, the second discharge terminal 104, S4 and the variable impedance module 20, and returns to the negative electrode of the high voltage energy storage module 01 to form a discharge loop to generate one phase of the bi-phase waveform, such as a positive phase square wave. During the discharge process, the control module 30 controls the variable impedance module 30 to change the impedance value at a predetermined time interval, such as reducing the impedance value, to form a sawtooth waveform in the phase waveform.
[0061] Next, the control switches S1 and S4 are turned off, and the switches S2 and S3 are turned on. The high voltage electricity flows out from the positive electrode of the high voltage energy storage module 01, flows in through the high voltage input terminal 101, and sequentially passes through S2, the second discharge terminal 104, the discharge object, the first discharge terminal 103, S3 and the variable impedance module 20, and returns to the negative electrode of the high voltage energy storage module 01 to form a discharge loop to generate another phase in the bi-phase waveform, such as a negative phase square wave. If it is desired to form a sawtooth waveform in another phase of the bi-phase waveform, the variable impedance module 20 is controlled to change the impedance value through the control module 30 during the discharge process; if it is not desired to form a sawtooth waveform in another phase of the bi-phase waveform, the variable impedance module 30 is not changed during the discharge process.
[0062] for Figure 3 In the embodiment, when the variable impedance module 20 is only connected to a certain branch, such as the third branch, when S1 and S4 are closed and S2 and S3 are turned on, the high voltage electricity flows through S1, the first discharge end 103, the discharge object, the second discharge end 104, S4 in sequence, and returns to the negative electrode of the high voltage energy storage module 01 to form a discharge loop; when S1 and switch S4 are disconnected and switch S2 and switch S3 are closed, the high voltage electricity flows through S2, the second discharge end 104, the discharge object, the first discharge end 103, the variable impedance module 20 and S3 in sequence, and returns to the negative electrode of the high voltage energy storage module 01 to form a discharge loop. By selecting whether to connect the variable impedance module 20 to the second branch and / or the fourth branch, or selecting whether to control the impedance value of the variable impedance module 20 in the discharge state, a sawtooth waveform can be formed in a single-phase or two-phase square wave.
[0063] Figure 4 and Figure 3 The difference between the embodiments is that the order in which S3 and the variable impedance module 20 are connected to the discharge circuit is interchanged.
[0064] The switches of the variable impedance module 20 and the phase-changing module 10 operate in a high-voltage electrical environment, while the control module 30 operates in a weak-current environment. In order to avoid voltage fluctuations during the period when the variable impedance module 10 changes impedance under the control of the control module 30, the traditional method requires the use of an isolation device, such as a transformer or a photoelectric isolator, which results in a complicated, bulky and expensive discharge circuit. In the embodiment of the present application, the power supply output terminal 202 of the variable impedance module 10 in the discharge state is equal to the driving power supply output terminal 302 of the control module 30, so that the control module 30 in the weak-current environment can directly control the variable impedance module 10 in the strong-current environment without the use of an isolation device, thereby simplifying the discharge circuit, reducing the volume and reducing the cost.
[0065] Figure 5 is a possible embodiment of the variable impedance module 20 and the control module 30. The variable impedance module 20 includes two or more impedance devices connected in series, and at least two power switches, and the at least two power switches are respectively connected in parallel with the two or more impedance devices. Optionally, the impedance device includes a resistor.
[0066] like Figure 5 As shown, the impedance device includes a first resistor R21, a second resistor R22...an nth resistor R2n, and a first power switch Q21, a second power switch Q22...an nth power switch Q2n, where n is a natural number greater than 2. A power switch is connected in parallel at both ends of each resistor. The power switch is illustrated by taking an IGBT as an example. The collector and emitter of the first power switch Q21 are respectively connected to both ends of the first resistor R21, the collector and emitter of the second power switch Q22 are respectively connected to both ends of the second resistor R22, and the collector and emitter of the nth power switch Q2n are respectively connected to both ends of the nth resistor R2n. The gates of Q21, Q22...Q2n are used to receive the drive signal output by the control module 30.
[0067] The control module 30 is used to bypass at least one of the two or more resistors in a predetermined order, so as to control the impedance value of the variable impedance module 20 to generate a sawtooth waveform. The driving power output terminal 302 of the control module 30 is connected to the power output terminal 202 of the variable impedance module 20, so that the two are at the same potential. The two or more resistors have unequal potentials relative to the power output terminal. Since the two or more resistors are connected in series, on the connection path electrically connected to the power output terminal 202, the closer the resistor is to the power output terminal 202, the lower the potential on it is relative to the power output terminal 202. The predetermined order includes the order of the potential of the resistors relative to the power output terminal 202 from low to high.
[0068] Specifically, Figure 5In the example, the potentials of R21, R22, ..., the nth resistor R2n gradually increase from low to high relative to the power supply output terminal 202. When controlling the impedance value of the variable impedance module 20 to generate a sawtooth waveform, first control Q21 to conduct, so that the resistor R21 with the lowest initial potential is short-circuited, then control Q22 to conduct, so that the resistor R22 with the second lowest initial potential is short-circuited, and so on, and finally control Q2n to conduct, so that the resistor R2n with the highest initial potential is short-circuited. The initial potential refers to the moment when the variable impedance module 20 is initially connected to the discharge circuit.
[0069] Optionally, more than two resistors are grouped together, and more than two groups of resistors are bypassed simultaneously in a predetermined order. The number of resistors in each group is selected as needed and can be the same or different. For example, the first group of resistors includes R21 and R22, the second group includes resistors including R23 and R24, and the nth group of resistors includes R2(n-1) and R2n. First, Q21 and Q22 are controlled to be turned on at the same time to short-circuit the first group of resistors, and then the second group of resistors is controlled to short-circuit, and so on, the nth group of resistors is controlled to short-circuit. In this way, the sawtooth waveform can be controlled more flexibly.
[0070] When the variable impedance module 20 is connected to the discharge circuit, the switch S3 is closed. At this time, the driving power output terminal 302 of the control module 30 and the power output terminal 202 of the variable impedance module 20 are grounded at the same time, and the negative pole of the driving power supply 40 is also grounded, that is, the control module 30, the variable impedance module 20 and the driving power supply 40 are all grounded. At this time, the control signal can directly control Q21 without passing through the isolation device. First, control Q21 to turn on so that R21 is short-circuited. After R21 is short-circuited, one end of R22 is directly grounded and has the same potential as the ground terminal of the control module 30. At this time, the control signal controlling Q22 can also directly control Q22 to turn on without passing through the isolation device, and short-circuit R22. Control other resistors in the above predetermined order without passing through the isolation device.
[0071] By controlling at least one bypass of at least two resistors in the variable impedance module 20 in a predetermined order, the control module 30 can directly control the variable impedance module 20 according to the control signal. During the control process, it is not necessary to use an isolation device to isolate the control module 30 in a weak current environment from the variable impedance module 20 in a strong current environment, thereby forming a sawtooth wave in at least one phase of the defibrillation discharge waveform. The defibrillation discharge circuit is further simplified, its volume is reduced, and the cost is reduced.
[0072] The control module 30 includes a driving unit 31, which is used to control the conduction state of at least two power switches under the control of a control signal, and bypass at least one of the two or more resistors in a predetermined order to achieve the control of the impedance value of the variable impedance module 20. Optionally, the driving unit 31 includes at least two driving branches, which are respectively used to control the conduction state of at least two power switches. At least two driving branches are connected in parallel between the driving power input terminal 301 and the driving power output terminal 302. At least one driving branch includes a first transistor, a first diode and a first resistor. The first transistor and the first diode are connected in series between the driving voltage and the control end of the power switch. The first transistor is used to receive a control signal, and when it is turned on, the driving voltage is output to the power switch of the variable impedance module 20. The first diode prevents the power switch from being damaged by high voltage. The first resistor is used to output a conduction voltage drop to the control end of the power switch.
[0073] Optionally, the control module 30 further includes a microcontroller 32 for outputting a control signal to the drive unit.
[0074] like Figure 5 As shown, the first drive circuit includes a first transistor Q31, a first diode D31 and a first resistor R31. The second drive circuit includes a second transistor Q32, a second diode D32 and a second resistor R32. The nth drive circuit includes an nth transistor Q3n, an nth diode D3n and an nth resistor R32. Q31~Q3n can be a triode or a MOS tube. The following is an explanation using a triode as an example. The emitters of Q31~Q3n are connected to the drive power input terminal 301 for receiving the drive voltage. The collectors of Q31~Q3n are respectively connected to the anodes of D31~D3n. The bases of Q31~Q3n are used to receive control signals. Optionally, the bases of Q31~Q3n are connected to a microcontroller 32 for receiving control signals. When the control signal reaches the turn-on voltage of Q31~Q3n, Q31~Q3n are turned on. The cathode of D31 is connected to the gate of the power switch Q21; the cathode of D32 is connected to the gate of the power switch Q22; the cathode of D3n is connected to the gate of the power switch Q2n. R31 is connected between the gate and the emitter of Q21; R32 is connected between the gate and the emitter of Q22; R3n R31 is connected between the gate and the emitter of Q2n. Optionally, Q2n and Q3n include N-type or P-type.
[0075] The control process of the variable impedance module 20 is as follows: when the switch S3 is closed, the variable impedance module 20 is connected to the discharge circuit, and its power output terminal 202 is grounded. The driving power output terminal 302 of the control module 30 is also grounded. The driving power output terminal 302 of the control module 30 is equipotential with the power output terminal 202 of the variable impedance module 20, so the driving signal output by the control module 30 can directly control whether the power switch Q21 of the variable impedance module 20 is turned on or not, without the need to use an isolation device. The microcontroller 32 outputs a control signal to the drive unit 31. When the control signal reaches the turn-on voltage of Q31, Q31 is turned on, and the driving voltage of the driving power supply 40 is output to R31 and the gate of Q21 through D31. R31 forms a turn-on voltage drop between the gate and the emitter of Q21, and controls Q21 to turn on. As a result, the resistor R21 connected between the collector and the emitter of Q21 is short-circuited. At this time, the emitter of Q22 and R22 are directly grounded, and are equipotential with the driving power output terminal 302 of the control module 30. Therefore, the driving signal output by the control module 30 can directly control whether the power switch Q22 of the variable impedance module 20 is turned on or off, without using an isolation device.
[0076] Then, when the control signal received by Q32 reaches its turn-on voltage, Q32 is turned on, and the drive voltage of the drive power supply 40 is output to R32 and the gate of Q22 via D32. R32 forms a turn-on voltage drop between the gate and the emitter of Q22, and controls Q22 to turn on. At this time, the emitter of Q2n and R2n are directly grounded, and have the same potential as the drive power output terminal 302 of the control module 30. Therefore, the drive signal output by the control module 30 can directly control whether the power switch Q22 of the variable impedance module 20 is turned on or not, without the need for an isolation device.
[0077] Similarly, when the control signal received by Q3n reaches its on-voltage, Q3n is turned on, and the driving voltage of the driving power supply 40 is output to R3n and the gate of Q2n through D3n. R3n forms a conduction voltage drop between the gate and emitter of Q2n, controlling Q2n to turn on.
[0078] During the discharge process, as the discharge proceeds, the discharge current will gradually decrease. At this time, the impedance value of the variable impedance module 20 connected to the discharge loop is controlled. At least one resistor is controlled to bypass at a predetermined time interval and in a predetermined order. Each time an resistor is short-circuited, a certain amount of discharge current can be increased to form a sawtooth peak, thereby generating a sawtooth waveform.
[0079] The embodiment of the present application also provides a defibrillation discharge circuit control method, the defibrillation discharge circuit includes a phase switching module 10, a variable impedance module 20, and a control module 30; the variable impedance module 20 includes a power input terminal and a power output terminal; the control module 30 includes a driving power input terminal and a driving power output terminal; the method includes the steps of:
[0080] S10, control the phase-changing module 10 to be in a first working state, and the first working state corresponds to the first phase of the defibrillation discharge waveform. The phase-changing module 10 is used to change the phase of the defibrillation discharge waveform. Optionally, the phase-changing module 10 adopts an H-bridge structure. Optionally, when the switch S1 and the switch S4 are closed, and the switch S2 and the switch S3 are disconnected, it is the first working state of the phase-changing module 10; the first working state corresponds to the first phase of the defibrillation discharge waveform, such as a positive phase waveform. When the switch S1 and the switch S4 are disconnected, and the switch S2 and the switch S3 are closed, it is the second working state of the phase-changing module 10; the first working state corresponds to the second phase of the defibrillation discharge waveform, such as a negative phase waveform.
[0081] S20, connecting the variable impedance module 20 to the defibrillation discharge circuit; the variable impedance module 20 includes two or more resistors connected in series; the two or more resistors have different potentials relative to the power output terminal.
[0082] S30, making the power output terminal 202 of the variable impedance module 20 and the driving power output terminal 302 of the control module have the same potential.
[0083] S40, bypassing two or more resistors in a predetermined order.
[0084] Optionally, after step S40, the method further includes: S50, controlling the phase switching module 10 to be in a second working state, where the second working state corresponds to a second phase of the defibrillation discharge waveform, such as a positive phase waveform;
[0085] S50, connecting the variable impedance module 20 to the defibrillation discharge circuit;
[0086] S60, bypassing two or more resistors in a predetermined order.
[0087] The predetermined sequence includes the sequence of the two or more resistors from low to high relative to the potential of the power supply output terminal.
[0088] The present application also provides a sawtooth waveform control circuit, referring to Figure 5 , including: a variable impedance module 20, a control module 30 and a discharge end connected to each other. The discharge end is used to discharge the discharge object to form a discharge circuit. Optionally, the discharge end includes: a first discharge end 103 and a second discharge end 104. The first discharge end 103 and the second discharge end 104 connect the discharge object between the positive and negative electrodes of the high-voltage energy storage module 01 to form a defibrillation discharge circuit. The discharge object is, for example, the patient's body or the patient's heart.
[0089] The variable impedance module 20 includes: two or more resistors connected in series, respectively connected to the power input end and the power output end; at least two power switches, and the at least two power switches are respectively connected in parallel with the two or more resistors. The resistor includes a first resistor R21, a second resistor R22...nth resistor R2n, and a first power switch Q21, a second power switch Q22...nth power switch Q2n, where n is a natural number greater than 2. A power switch is connected in parallel at both ends of each resistor. The power switch is illustrated by taking IGBT as an example. The collector and emitter of the first power switch Q21 are respectively connected to both ends of the first resistor R21, the collector and emitter of the second power switch Q22 are respectively connected to both ends of the second resistor R22, and the collector and emitter of the nth power switch Q2n are respectively connected to both ends of the nth resistor R2n. The gates of Q21, Q22...Q2n are used to receive the drive signal output by the control module 30.
[0090] The control module 30 includes: a driving unit 31, which is connected to the input end and the output end of the driving power supply. When the variable impedance module 20 is in the working state, the power output end of the variable impedance module 20 and the driving power output end of the control module 30 are at the same potential;
[0091] The control module 30 is used to control the conduction state of at least two power switches, bypass at least one of the two or more resistors in a predetermined order, thereby controlling the impedance value of the variable impedance module 20 to generate a sawtooth waveform. The two or more resistors have different potentials relative to the power output terminal. The predetermined order includes the order of the two or more resistors relative to the power output terminal from low to high potential.
[0092] The driving power supply output terminal 302 of the control module 30 is connected to the power supply output terminal 202 of the variable impedance module 20, so that the two have the same potential. The two or more resistors have unequal potentials relative to the power supply output terminal. Since the two or more resistors are connected in series, on the connection path electrically connected to the power supply output terminal 202, the closer the resistor is to the power supply output terminal 202, the lower the potential on it is relative to the power supply output terminal 202. The predetermined order includes the order of the potential of the resistors relative to the power supply output terminal 202 from low to high.
[0093] Specifically, Figure 5In the example, the potentials of R21, R22, ..., the nth resistor R2n gradually increase from low to high relative to the power supply output terminal 202. When controlling the impedance value of the variable impedance module 20 to generate a sawtooth waveform, first control Q21 to conduct, so that the resistor R21 with the lowest initial potential is short-circuited, then control Q22 to conduct, so that the resistor R22 with the second lowest initial potential is short-circuited, and so on, and finally control Q2n to conduct, so that the resistor R2n with the highest initial potential is short-circuited. The initial potential refers to the moment when the variable impedance module 20 is initially connected to the discharge circuit.
[0094] Optionally, more than two resistors are grouped together, and more than two groups of resistors are bypassed simultaneously in a predetermined order. The number of resistors in each group is selected as needed and can be the same or different. For example, the first group of resistors includes R21 and R22, the second group includes resistors including R23 and R24, and the nth group of resistors includes R2(n-1) and R2n. First, Q21 and Q22 are controlled to be turned on at the same time to short-circuit the first group of resistors, and then the second group of resistors is controlled to short-circuit, and so on, the nth group of resistors is controlled to short-circuit. In this way, the sawtooth waveform can be controlled more flexibly.
[0095] When the variable impedance module 20 is connected to the discharge circuit, the switch S3 is closed. At this time, the driving power output terminal 302 of the control module 30 and the power output terminal 202 of the variable impedance module 20 are grounded at the same time, and the negative pole of the driving power supply 40 is also grounded, that is, the control module 30, the variable impedance module 20 and the driving power supply 40 are all grounded. At this time, the control signal can directly control Q21 without passing through the isolation device. First, control Q21 to turn on so that R21 is short-circuited. After R21 is short-circuited, one end of R22 is directly grounded and has the same potential as the ground terminal of the control module 30. At this time, the control signal controlling Q22 can also directly control Q22 to turn on without passing through the isolation device, and short-circuit R22. Control other resistors in the above predetermined order without passing through the isolation device.
[0096] By controlling at least one bypass of at least two resistors in the variable impedance module 20 in a predetermined order, the control module 30 can directly control the variable impedance module 20 according to the control signal. During the control process, it is not necessary to use an isolation device to isolate the control module 30 in a weak current environment from the variable impedance module 20 in a strong current environment, thereby forming a sawtooth wave in at least one phase of the defibrillation discharge waveform. The defibrillation discharge circuit is further simplified, its volume is reduced, and the cost is reduced.
[0097] The driving unit 31 includes at least two driving branches, which are respectively used to control the conduction state of at least two power switches. The at least two driving branches are connected in parallel between the driving power input terminal 301 and the driving power output terminal 302.
[0098] At least one driving branch includes a first transistor, a first diode and a first resistor. The first transistor and the first diode are connected in series between the driving voltage and the control end of the power switch. The first transistor is used to receive a control signal, and when it is turned on, the driving voltage is output to the power switch of the variable impedance module 20. The first diode prevents the high voltage from damaging the power switch. The first resistor is used to output the conduction voltage drop to the control end of the power switch.
[0099] Optionally, the control module 30 further includes a microcontroller 32 for outputting a control signal to the drive unit.
[0100] like Figure 5 As shown, the first drive circuit includes a first transistor Q31, a first diode D31 and a first resistor R31. The second drive circuit includes a second transistor Q32, a second diode D32 and a second resistor R32. The nth drive circuit includes an nth transistor Q3n, an nth diode D3n and an nth resistor R32. Q31~Q3n can be a triode or a MOS tube. The following is an explanation using a triode as an example. The emitters of Q31~Q3n are connected to the drive power input terminal 301 for receiving the drive voltage. The collectors of Q31~Q3n are respectively connected to the anodes of D31~D3n. The bases of Q31~Q3n are used to receive control signals. Optionally, the bases of Q31~Q3n are connected to a microcontroller 32 for receiving control signals. When the control signal reaches the turn-on voltage of Q31~Q3n, Q31~Q3n are turned on. The cathode of D31 is connected to the gate of the power switch Q21; the cathode of D32 is connected to the gate of the power switch Q22; the cathode of D3n is connected to the gate of the power switch Q2n. R31 is connected between the gate and the emitter of Q21; R32 is connected between the gate and the emitter of Q22; R3n R31 is connected between the gate and the emitter of Q2n. Optionally, Q2n and Q3n include N-type or P-type.
[0101] The control process of the variable impedance module 20 is as follows: when the switch S3 is closed, the variable impedance module 20 is connected to the discharge circuit, and its power output terminal 202 is grounded. The driving power output terminal 302 of the control module 30 is also grounded. The driving power output terminal 302 of the control module 30 is equipotential with the power output terminal 202 of the variable impedance module 20, so the driving signal output by the control module 30 can directly control whether the power switch Q21 of the variable impedance module 20 is turned on or not, without the need to use an isolation device. The microcontroller 32 outputs a control signal to the drive unit 31. When the control signal reaches the turn-on voltage of Q31, Q31 is turned on, and the driving voltage of the driving power supply 40 is output to R31 and the gate of Q21 through D31. R31 forms a turn-on voltage drop between the gate and the emitter of Q21, and controls Q21 to turn on. As a result, the resistor R21 connected between the collector and the emitter of Q21 is short-circuited. At this time, the emitter of Q22 and R22 are directly grounded, and are equipotential with the driving power output terminal 302 of the control module 30. Therefore, the driving signal output by the control module 30 can directly control whether the power switch Q22 of the variable impedance module 20 is turned on or off, without using an isolation device.
[0102] Then, when the control signal received by Q32 reaches its turn-on voltage, Q32 is turned on, and the drive voltage of the drive power supply 40 is output to R32 and the gate of Q22 via D32. R32 forms a turn-on voltage drop between the gate and the emitter of Q22, and controls Q22 to turn on. At this time, the emitter of Q2n and R2n are directly grounded, and have the same potential as the drive power output terminal 302 of the control module 30. Therefore, the drive signal output by the control module 30 can directly control whether the power switch Q22 of the variable impedance module 20 is turned on or not, without the need for an isolation device.
[0103] Similarly, when the control signal received by Q3n reaches its on-voltage, Q3n is turned on, and the driving voltage of the driving power supply 40 is output to R3n and the gate of Q2n through D3n. R3n forms a conduction voltage drop between the gate and emitter of Q2n, controlling Q2n to turn on.
[0104] During the discharge process, as the discharge proceeds, the discharge current will gradually decrease. At this time, the impedance value of the variable impedance module 20 connected to the discharge loop is controlled. At least one resistor is controlled to be short-circuited at a predetermined time interval and in a predetermined order. Each time a resistor is short-circuited, a certain amount of discharge current can be increased to form a sawtooth peak, thereby generating a sawtooth waveform.
[0105] The embodiment of the present application further provides a defibrillator, comprising the defibrillation discharge circuit described in any of the above embodiments. Optionally, the defibrillator further comprises a high-voltage energy storage module 01 and a charging circuit.
[0106] The embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of the above-mentioned defibrillation discharge circuit control method are implemented.
[0107] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory or optical memory, etc. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).
[0108] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0109] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.
Claims
1. A defibrillation discharge circuit, It is characterized in that include: Phase-commutation module, variable impedance module, control module; The phase-changing module includes a high-voltage power input terminal, a high-voltage power output terminal, a first discharge terminal and a second discharge terminal; the high-voltage power input terminal and the high-voltage power output terminal are respectively used to connect the positive electrode and the negative electrode of the high-voltage energy storage module; the first discharge terminal and the second discharge terminal are used to connect the discharge object between the positive electrode and the negative electrode of the high-voltage energy storage module to form a defibrillation discharge circuit; the phase-changing module is used to change the phase of the defibrillation discharge waveform; The variable impedance module is connected to the defibrillation discharge circuit; the variable impedance module includes a power input terminal and a power output terminal; The control module is used to control the impedance value of the variable impedance module to control the waveform of at least one phase of the waveform; the control module includes a driving power input terminal and a driving power output terminal; When the variable impedance module is in working state, the power output terminal of the variable impedance module and the driving power output terminal of the control module are at the same potential.
2. The defibrillation discharge circuit according to claim 1, It is characterized in that The variable impedance module includes more than two resistors connected in series, and at least two power switches, and the at least two power switches are respectively connected in parallel with the more than two resistors.
3. The defibrillation discharge circuit according to claim 2, It is characterized in that The control module is used to control the impedance value of the variable impedance module, including: controlling the conduction state of the at least two power switches, bypassing at least one of the two or more resistors in a predetermined order, and the two or more resistors have different potentials relative to the power supply output terminal; the predetermined order includes the order of the two or more resistors relative to the power supply output terminal from low to high.
4. The defibrillation discharge circuit according to claim 3, It is characterized in that The control module includes: a driving unit, which is used to control the conduction state of the at least two power switches under the control of a control signal; the driving unit includes: at least two driving branches, which are respectively used to control the conduction state of the at least two power switches; the at least two driving branches are connected in parallel between the driving power input terminal and the driving power output terminal.
5. The defibrillation discharge circuit according to claim 4, It is characterized in that At least one of the driving branches includes a first transistor, a first diode and a first resistor; the first transistor and the first diode are connected in series between the driving power supply and the control end of the power switch; the first resistor is used to output a conduction voltage drop to the control end of the power switch.
6. The defibrillation discharge circuit according to claim 5, It is characterized in that The variable impedance module and at least one power switch are connected in series between the first discharge end and the high voltage output end, and / or the variable impedance module and at least one power switch are connected in series between the second discharge end and the high voltage output end.
7. The defibrillation discharge circuit according to claim 6, It is characterized in that The variable impedance module is connected between the high voltage power output terminal and the negative electrode of the high voltage energy storage module.
8. The defibrillation discharge circuit according to claim 1, It is characterized in that The control module is also used to control the phase of the defibrillation waveform output by the phase switching module.
9. A defibrillation discharge circuit control method, It is characterized in that The defibrillation discharge circuit includes a phase switching module, a variable impedance module, and a control module; The variable impedance module includes a power input terminal and a power output terminal; the control module includes a driving power input terminal and a driving power output terminal; the method includes: Controlling the phase switching module to be in a first working state, wherein the first working state corresponds to a first phase of a defibrillation discharge waveform; Connecting the variable impedance module to the defibrillation discharge circuit; the variable impedance module includes more than two resistors connected in series; Making the power supply output terminal of the variable impedance module and the driving power supply output terminal of the control module equal in potential; The two or more resistors are bypassed in a predetermined order.
10. The defibrillation discharge circuit control method according to claim 9, It is characterized in that Controlling the phase switching module to be in a second working state, wherein the second working state corresponds to a second phase of the defibrillation discharge waveform; Connecting the variable impedance module to a defibrillation discharge circuit; Whether the two or more resistors are connected to the discharge circuit is controlled in the predetermined order.
11. A sawtooth waveform control circuit, It is characterized in that include: A variable impedance module, a control module and a discharge terminal connected to each other; The discharge end is used to discharge the discharge object to form a discharge loop; The variable impedance module comprises: two or more resistors connected in series, respectively connected to a power input terminal and a power output terminal; at least two power switches, respectively connected in parallel to the two or more resistors; The control module comprises: a driving unit, connected to the input end and the output end of the driving power supply respectively; when the variable impedance module is in a working state, the power output end of the variable impedance module and the driving power output end of the control module are at the same potential; The control module is used to control the conduction state of the at least two power switches to bypass at least one of the two or more resistors in a predetermined order; the two or more resistors have different potentials relative to the power supply output terminal; the predetermined order includes the order of the two or more resistors relative to the power supply output terminal from low to high potential.
12. The sawtooth waveform control circuit according to claim 11, It is characterized in that The driving unit comprises: at least two driving branches, respectively used to control the conduction state of the at least two power switches; the at least two driving branches are connected in parallel between the driving power input terminal and the driving power output terminal.
13. The sawtooth waveform control circuit according to claim 12, It is characterized in that At least one of the driving branches includes a first transistor, a first diode and a first resistor; the first transistor and the first diode are connected in series between the driving power supply and the control end of the power switch; the first resistor is used to output a conduction voltage drop to the control end of the power switch.
14. A defibrillator, It is characterized in that A defibrillation discharge circuit comprising any one of claims 1 to 8.
15. A computer-readable storage medium having a computer program stored thereon, It is characterized in that When the computer program is executed by a processor, the steps of the defibrillation discharge circuit control method according to any one of claims 9 to 10 are implemented.