Electric pulse generator and medical equipment

Abstract

The utility model provides an electric pulse generator and medical equipment. The electric pulse generator comprises a voltage regulating circuit, an energy storage capacitor, a charging / discharging change-over switch, an attenuation circuit, a voltage detection module, a current detection module and a monitoring control circuit, the voltage regulating circuit is configured to boost a direct current power supply provided by an external power supply so as to provide a charging power supply for the energy storage capacitor; the charging / discharging change-over switch is configured to conduct the voltage regulating circuit and the energy storage capacitor during charging and conduct the energy storage capacitor and the attenuation circuit during discharging output; the voltage detection module is configured to measure an actual output voltage value and feed back the actual output voltage value to the monitoring control circuit; the current detection module is configured to measure an actual output current value and feed back the actual output current value to the monitoring control circuit; and the monitoring control circuit is configured to control the attenuation amount of the attenuation circuit in a constant voltage or constant current mode so as to realize constant output voltage or current. According to the utility model, a constant-voltage pulse output mode and a constant-current pulse output mode can be provided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an electric pulse generator and medical equipment. Background Art

[0002] Electric pulse generators are widely used in clinical surgery. They use the electrophysiological effects of pulse voltage or current on biological tissues to diagnose and treat diseases. They are also called electrophysiological stimulators. Bioelectric signals are important carriers for control and information sensing in organisms. Therefore, the relevant reactions produced by the organism can be explored by applying simulated electrical stimulation signals. For example, during cardiac electrophysiological examinations, electrical stimulation pulses are applied to certain parts of the heart cavity, while the electrophysiological activity of the heart is monitored in other parts. In this way, the state of excitation and conduction of cardiac electrical signals is detected to find abnormal lesions, and the lesions are quickly located to facilitate the diagnosis and later treatment of the disease. Electric pulse stimulation is also used for the diagnosis and treatment of diseases related to nerve conduction. Electric pulse generators are also commonly used for nerve stimulation in organisms to diagnose, treat and study diseases.

[0003] The electric pulse generator currently used in medical clinics usually uses a transformer and a corresponding switch conversion circuit to provide the electrical energy required to form the pulse, while achieving electrical isolation of the output pulse and other circuits such as the mains power supply. The switch conversion circuit is relatively complex to control, has a high failure rate, and occupies a large volume. It usually has only one mode of constant current output or constant voltage output. Clinical applications or scientific research experiments require electric pulse generators with high reliability and flexible parameter settings.

[0004] It should be noted that the information disclosed in the background technology section of the utility model is only intended to deepen the understanding of the general background technology of the utility model, and should not be regarded as an admission or suggestion in any form that the information constitutes prior art already known to those skilled in the art. Utility Model Content

[0005] The purpose of the utility model is to provide an electric pulse generator and medical equipment, which can provide two pulse output modes: constant voltage and constant current. The two pulse output modes can be flexibly set to meet various clinical or scientific research needs.

[0006] To achieve the above-mentioned purpose, the utility model provides an electric pulse generator, which includes a voltage regulating circuit, an energy storage capacitor, a charge / discharge switching switch, an attenuation circuit, a voltage detection module, a current detection module and a monitoring control circuit; the input end of the voltage regulating circuit is used to be connected to an external power supply, and the voltage regulating circuit is configured to boost the DC power supply provided by the external power supply, thereby providing a charging power supply for the energy storage capacitor; one end of the energy storage capacitor is connected to the charge / discharge switching switch, and the other end of the energy storage capacitor is grounded; the charge / discharge switching switch is configured to conduct the voltage regulating circuit and the energy storage capacitor when charging, and conduct the voltage regulating circuit and the current detection module when discharging. When electrical output is performed, the energy storage capacitor and the attenuation circuit are turned on; the attenuation circuit is configured to attenuate the electrical energy output by the energy storage capacitor; the voltage detection module is configured to measure the actual output voltage value and feed it back to the monitoring control circuit; the current detection module is configured to measure the actual output current value and feed it back to the monitoring control circuit; the monitoring control circuit is configured to control the attenuation amount of the attenuation circuit according to the actual output voltage value and the preset output voltage value in the constant voltage mode to achieve a constant output voltage; and to control the attenuation amount of the attenuation circuit according to the actual output current value and the preset output current value in the constant current mode to achieve a constant output current.

[0007] Optionally, the monitoring control circuit is configured to control the attenuation circuit to reduce its attenuation when the actual output voltage value is less than the preset output voltage value; to control the attenuation circuit to increase its attenuation when the actual output voltage value is greater than the preset output voltage value; and to control the attenuation of the attenuation circuit to remain unchanged when the actual output voltage value is equal to the preset output voltage value.

[0008] Optionally, the monitoring and control circuit is configured to control the attenuation circuit to reduce its attenuation when the actual output current value is less than the preset output current value; to control the attenuation circuit to increase its attenuation when the actual output current value is greater than the preset output current value; and to control the attenuation of the attenuation circuit to remain unchanged when the actual output current value is equal to the preset output current value.

[0009] Optionally, the electric pulse generator further includes a controller, the voltage regulating circuit, the charge / discharge switch and the monitoring control circuit are all connected to the controller, and the controller is configured to perform the following operations:

[0010] Sending an enable signal to the voltage regulating circuit to control the voltage regulating circuit to boost the DC power supply provided by the external power supply;

[0011] Sending a charging selection signal to the charge / discharge switching switch so that the charge / discharge switching switch turns on the voltage regulating circuit and the energy storage capacitor; or sending a discharging selection signal to the charge / discharge switching switch so that the charge / discharge switching switch turns on the energy storage capacitor and the attenuation circuit;

[0012] In a constant voltage mode, sending a preset output voltage value to the monitoring control circuit; in a constant current mode, sending a preset output current value to the monitoring control circuit; and

[0013] The width of the discharge pulse is adjusted by controlling the duration of each discharge; the period or frequency of the discharge pulse is adjusted by controlling the time interval between two discharges.

[0014] Optionally, the voltage regulating circuit is further configured to cut off power supply during standby according to an enable signal output by the controller.

[0015] Optionally, the voltage detection module is also configured to transmit the actual output voltage value measured by it to the controller, and the current detection module is also configured to transmit the actual output current value measured by it to the controller, and the controller is also configured to cut off or reduce the output energy when the actual output voltage value or the actual output current value is abnormal.

[0016] Optionally, the controller is configured to send a charging selection signal to the charge / discharge switching switch when the actual output voltage value or the actual output current value is abnormal, so that the charge / discharge switching switch disconnects the energy storage capacitor from the attenuation circuit and controls the voltage regulating circuit to cut off power supply.

[0017] Optionally, the controller is further configured to calculate the impedance value of the load according to the actual output voltage value measured by the voltage detection module and the actual output current value measured by the current detection module, and set the output voltage value of the voltage regulating circuit according to the impedance value of the load.

[0018] Optionally, the monitoring and control circuit includes a monitoring circuit and a control circuit, the monitoring circuit and the control circuit are both connected to the controller, the voltage detection module and the current detection module are both connected to the monitoring circuit, so as to transmit the measured actual output voltage value and the actual output current value to the controller through the monitoring circuit, and the controller is configured to send the actual output voltage value and the preset output voltage value to the control circuit in a constant voltage mode, and to send the actual output current value and the preset output current value to the control circuit in a constant current mode.

[0019] Optionally, the monitoring control circuit includes a control circuit and a voltage / current switching switch connected in series, and the voltage / current switching switch is configured to turn on the voltage detection module and the control circuit in a constant voltage mode, and to turn on the current detection module and the control circuit in a constant current mode.

[0020] In order to achieve the above-mentioned object, the utility model also provides a medical device, characterized in that the medical device includes the electric pulse generator mentioned above.

[0021] Compared with the prior art, the electric pulse generator and medical device provided by the utility model have the following beneficial effects:

[0022] The electric pulse generator provided by the utility model comprises a voltage regulating circuit, an energy storage capacitor, a charge / discharge switching switch, an attenuation circuit, a voltage detection module, a current detection module and a monitoring control circuit; the input end of the voltage regulating circuit is used to be connected to an external power supply, and the voltage regulating circuit is configured to boost the DC power supply provided by the external power supply, thereby providing a charging power supply for the energy storage capacitor; one end of the energy storage capacitor is connected to the charge / discharge switching switch, and the other end of the energy storage capacitor is grounded; the charge / discharge switching switch is configured to conduct the voltage regulating circuit and the energy storage capacitor when charging, and conduct the current detection module when discharging output. Energy storage capacitor and the attenuation circuit; the attenuation circuit is configured to attenuate the electric energy output by the energy storage capacitor; the voltage detection module is configured to measure the actual output voltage value and feed it back to the monitoring control circuit; the current detection module is configured to measure the actual output current value and feed it back to the monitoring control circuit; the monitoring control circuit is configured to control the attenuation of the attenuation circuit according to the actual output voltage value and the preset output voltage value in the constant voltage mode to achieve constant output voltage; in the constant current mode, according to the actual output current value and the preset output current value, control the attenuation of the attenuation circuit to achieve constant output current. It can be seen that the electric pulse generator provided by the utility model can provide two pulse output modes of constant voltage and constant current, and the two pulse output modes of constant voltage and constant current are realized by the same set of attenuation circuit and monitoring control circuit, which can be flexibly switched, not only meeting the current clinical use requirements, but also meeting the cutting-edge scientific research application requirements, bringing greater convenience to clinical and scientific research. At the same time, the electric pulse generator provided by the utility model has a simple structure, has obvious improvements in reliability, and has a small overall volume, which is convenient for product miniaturization. In addition, the electric pulse generator provided by the utility model can realize easy-to-control high-reliability electric pulse energy output based on the capacitor energy storage and discharge structure. In addition, the electric pulse generator provided by the utility model can monitor the output voltage through the voltage detection module and the output current through the current detection module, thereby improving the accuracy and safety of the output pulse and meeting the requirements of clinical and scientific research applications.

[0023] Since the medical device provided by the utility model includes the electric pulse generator provided by the utility model, the medical device provided by the utility model at least has all the beneficial effects of the electric pulse generator provided by the utility model. For details, please refer to the relevant description of the beneficial effects of the electric pulse generator provided by the utility model in the above text. Therefore, the beneficial effects of the medical device provided by the utility model will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the overall structure of an electric pulse generator provided in one embodiment of the utility model;

[0025] Figure 2 A schematic diagram of the structure of a monitoring control circuit provided in one embodiment of the utility model;

[0026] Figure 3 This is a schematic diagram of the overall structure of an electric pulse generator provided in another embodiment of the utility model.

[0027] The reference numerals are described as follows:

[0028] External power supply-VCC; voltage regulating circuit-110; energy storage capacitor-C101; charge / discharge switching switch-S101; attenuation circuit-120; voltage detection module-130; current detection module-140; monitoring control circuit-150; control circuit-151; monitoring circuit-152; voltage / current switching switch-S102; load-RL; amplifier-AMP; controller-160. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the electric pulse generator and medical device proposed by the utility model in combination with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the utility model will be clearer. It should be noted that the drawings are in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the implementation of the utility model. In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the drawings. It should be noted that the structure, proportion, size, etc. illustrated in the drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model. Any modification of the structure, change of the proportional relationship or adjustment of the size, in the case of the same or similar effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. The specific design features of the utility model disclosed herein include, for example, specific dimensions, directions, positions and shapes, which will be determined in part by the specific environment to be applied and used. Also, in the embodiments described below, sometimes the same reference numerals are used in common between different figures to represent the same parts or parts with the same functions, and their repeated descriptions are omitted. In this specification, similar reference numerals and letters are used to represent similar items, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures. In addition, if the method described herein includes a series of steps, the order of these steps presented herein is not necessarily the only order in which these steps can be performed, and some of the steps described may be omitted and / or some other steps not described herein may be added to the method.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements. The singular forms "a", "an" and "the" include plural referents, the term "or" is generally used in a sense including "and / or", the term "several" is generally used in a sense including "at least one", the term "at least two" is generally used in a sense including "two or more", and the term "plurality" is generally used in a sense including "at least two".

[0031] The core idea of ​​the present invention is to provide an electric pulse generator and medical equipment, which can provide two pulse output modes: constant voltage and constant current, and the two pulse output modes can be flexibly set to meet various clinical or scientific research needs. It should be noted that, as can be understood by those skilled in the art, the medical equipment provided by the present invention can be an electric pulse stimulation device or an electric pulse ablation device.

[0032] In order to realize the above idea, the utility model provides an electric pulse generator, please refer to Figure 1 , which is a schematic diagram of the overall structure of an electric pulse generator provided by an embodiment of the utility model. Figure 1As shown, the electric pulse generator provided by the utility model includes a voltage regulating circuit 110, an energy storage capacitor C101, a charge / discharge switching switch S101, an attenuation circuit 120, a voltage detection module 130, a current detection module 140 and a monitoring control circuit 150; the input end of the voltage regulating circuit 110 is used to be connected to an external power supply VCC, and the voltage regulating circuit 110 is configured to boost the DC power supply provided by the external power supply VCC, thereby providing a charging power supply for the energy storage capacitor C101; one end of the energy storage capacitor C101 is connected to the charge / discharge switching switch S101, and the other end of the energy storage capacitor C101 is grounded; the charge / discharge switching switch S101 is configured to conduct the voltage regulating circuit 110 and the energy storage capacitor C101 (that is, the charge / discharge switching switch S101 is switched to point a in the figure) when charging. ), and during discharge output, the energy storage capacitor C101 and the attenuation circuit 120 are turned on (that is, the charge / discharge switching switch S101 is switched to point b in the figure); the attenuation circuit 120 is configured to attenuate the electric energy output by the energy storage capacitor C101; the voltage detection module 130 is configured to measure the actual output voltage value and feed it back to the monitoring control circuit 150; the current detection module 140 is configured to measure the actual output current value and feed it back to the monitoring control circuit 150; the monitoring control circuit 150 is configured to control the attenuation amount of the attenuation circuit 120 according to the actual output voltage value and the preset output voltage value in the constant voltage mode to achieve constant output voltage; in the constant current mode, control the attenuation amount of the attenuation circuit 120 according to the actual output current value and the preset output current value to achieve constant output current.

[0033] Therefore, the electric pulse generator provided by the utility model can provide two pulse output modes, constant voltage and constant current, and the two pulse output modes of constant voltage and constant current are realized by the same set of attenuation circuit 120 and monitoring control circuit 150, which can be flexibly switched, not only meeting the current clinical use requirements, but also meeting the cutting-edge scientific research application requirements, bringing greater convenience to clinical and scientific research. At the same time, the electric pulse generator provided by the utility model has a simple structure, has obvious improvements in reliability, and has a small overall volume, which is convenient for product miniaturization. In addition, the electric pulse generator provided by the utility model is based on the structure of capacitor energy storage and discharge, and can achieve easy-to-control high-reliability electric pulse energy output. In addition, the electric pulse generator provided by the utility model can monitor the output voltage through the voltage detection module 130, and can monitor the output current through the current detection module 140, which improves the accuracy and safety of the output pulse and meets the requirements of clinical and scientific research applications.

[0034] It should be noted that, as can be understood by those skilled in the art, during the pulse output period, the energy storage capacitor C101 is in a discharge state, and the electric energy output by the energy storage capacitor C101 is attenuated by the attenuation circuit 120 and applied to the load RL (such as a patient), and during the pulse interval (i.e., the interval between two adjacent pulses), the energy storage capacitor C101 is in a charging state, and the voltage regulating circuit 110 boosts the DC power supply provided by the external power supply VCC to convert the DC power supply provided by the external power supply VCC into a power supply for charging the energy storage capacitor C101. It should also be noted that, as can be understood by those skilled in the art, the strongest electric pulse output by the electric pulse generator provided by the utility model depends on the electric energy stored in the energy storage capacitor C101, and thus the electric pulse generator provided by the utility model can also avoid excessive energy output to the human body causing harm. In addition, it should be noted that although Figure 1 The attenuation circuit 120 in the electric pulse generator provided in this embodiment is located on the high-voltage side of the output circuit for explanation. However, as those skilled in the art can understand, in some other implementations, the attenuation circuit 120 in the electric pulse generator provided in this embodiment can also be set on the low-voltage side of the output circuit.

[0035] Furthermore, the circuit structure of the voltage regulating circuit 110 can refer to the boost circuit structure known to those skilled in the art, so that the DC power supply provided by the external power supply VCC can be effectively boosted by the voltage regulating circuit 110. For example, the voltage regulating circuit 110 can convert a 5Vdc (5V direct current) power supply into a 20Vdc (20V direct current) charging power supply. It should be noted that, as can be understood by those skilled in the art, the present utility model does not limit the input voltage range and output voltage range of the voltage regulating circuit 110. For example, the input voltage range of the voltage regulating circuit 110 can be 2.7V to 14V, and the output voltage range of the voltage regulating circuit 110 can be 5V to 50V.

[0036] Further, the utility model does not limit the specific structure of the energy storage capacitor C101, and the energy storage capacitor C101 can be a single capacitor, or a series of capacitors in parallel or (and) series combination. It should be noted that, as those skilled in the art can understand, the total capacity of the energy storage capacitor C101 can be selected according to the voltage or current size and duration (related to pulse width) of the output electric pulse. For example, the capacitance of the energy storage capacitor C101 is less than 22uF, and the rated voltage is not less than 100Vdc, where dc represents direct current. Thus, compared to the method of providing electric energy through a transformer and related conversion circuits in the prior art, the utility model adopts capacitor energy storage with the advantages of fast charging speed, simple circuit, and long life.

[0037] Furthermore, the present invention does not limit the specific structure of the charge / discharge switching switch S101. The charge / discharge switching switch S101 can be a single-pole double-throw switch, or other switch circuit structures that achieve the same effect. For details, please refer to the relevant technologies known to technical personnel in this field, which will not be listed here one by one.

[0038] Furthermore, the present invention does not limit the specific structure of the attenuation circuit 120. For example, the attenuation circuit 120 can be implemented by a transistor or a field effect transistor. Of course, the attenuation circuit 120 can also be implemented by other equivalent circuits. For details, please refer to the relevant technologies known to those skilled in the art, which will not be listed here one by one.

[0039] Further, the voltage detection module 130 is connected in parallel with the load RL (e.g., a patient) to monitor the actual output voltage. Since the voltage detection module 130 has a high impedance, the influence of the voltage detection module 130 on the current of the output circuit can be ignored. The current detection module 140 is connected in series with the load RL (e.g., a patient) to monitor the actual output current. Since the current detection module 140 has a low impedance, the influence of the current detection module 140 on the voltage of the output circuit can be ignored.

[0040] In some exemplary embodiments, the monitoring control circuit 150 is configured to control the attenuation circuit 120 to reduce its attenuation when the actual output voltage value is less than the preset output voltage value; control the attenuation circuit 120 to increase its attenuation when the actual output voltage value is greater than the preset output voltage value; and control the attenuation of the attenuation circuit 120 to remain unchanged when the actual output voltage value is equal to the preset output voltage value. Thus, by controlling the attenuation circuit 120 to reduce its attenuation based on the current attenuation when the current actual output voltage value is less than the preset output voltage, the electric energy output by the energy storage capacitor C101 can be increased, thereby increasing the actual output voltage; by controlling the attenuation circuit 120 to increase its attenuation based on the current attenuation when the current actual output voltage value is greater than the preset output voltage value, the electric energy output by the energy storage capacitor C101 can be reduced, thereby reducing the actual output voltage; by controlling the attenuation circuit 120 to maintain the current attenuation when the current actual output voltage value is equal to the preset output voltage value, the actual output voltage can be kept unchanged.

[0041] In some exemplary embodiments, the monitoring control circuit 150 is configured to control the attenuation circuit 120 to reduce its attenuation when the actual output current value is less than the preset output current value; control the attenuation circuit 120 to increase its attenuation when the actual output current value is greater than the preset output current value; and control the attenuation circuit 120 to remain unchanged when the actual output current value is equal to the preset output current value. Thus, by controlling the attenuation circuit 120 to reduce its attenuation based on the current attenuation when the current actual output current value is less than the preset output current, the electric energy output by the energy storage capacitor C101 can be increased, thereby increasing the actual output current; by controlling the attenuation circuit 120 to increase its attenuation based on the current attenuation when the current actual output current value is greater than the preset output current value, the electric energy output by the energy storage capacitor C101 can be reduced, thereby reducing the actual output current; by controlling the attenuation circuit 120 to maintain the current attenuation when the current actual output current value is equal to the preset output current value, the actual output current can be kept unchanged.

[0042] Please continue to refer to Figure 1 ,like Figure 1 As shown, in some exemplary embodiments, the electric pulse generator further includes a controller 160, the voltage regulating circuit 110, the charge / discharge switch S101 and the monitoring control circuit 150 are all connected to the controller 160, and the controller 160 is configured to perform the following operations:

[0043] Sending an enable signal to the voltage regulating circuit 110 to control the voltage regulating circuit 110 to boost the DC power supply provided by the external power supply VCC;

[0044] Sending a charging selection signal to the charge / discharge switch S101 so that the charge / discharge switch S101 conducts between the voltage regulating circuit 110 and the energy storage capacitor C101; or sending a discharging selection signal to the charge / discharge switch S101 so that the charge / discharge switch S101 conducts between the energy storage capacitor C101 and the attenuation circuit 120; and

[0045] In the constant voltage mode, a preset output voltage value is sent to the monitoring control circuit 150 , and in the constant current mode, a preset output current value is sent to the monitoring control circuit 150 .

[0046] Therefore, by controlling the voltage regulating circuit 110, the charge / discharge switching switch S101 and the monitoring control circuit 150 through the controller 160, it is easier to achieve the output of electrical pulse energy with high reliability that is easy to control.

[0047] It should be noted that, as can be understood by those skilled in the art, the present invention does not limit the specific type of the controller 160, and the controller 160 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. For more information about the controller 160, reference may be made to the relevant technologies known to those skilled in the art, and no further description will be given here.

[0048] In some exemplary embodiments, the controller 160 is further configured to adjust the width of the discharge pulse by controlling the duration of each discharge in the constant current mode or the constant voltage mode; and to adjust the period or frequency of the discharge pulse by controlling the time interval between two discharges. Thus, through such a setting, it is further convenient to realize the output of the electric pulse energy with high reliability that is easy to control.

[0049] Furthermore, when the controller 160 is a digital signal processor, the electric pulse generator provided by the present invention further includes a digital-to-analog conversion module (not shown in the figure), and the digital-to-analog conversion module is configured to convert the digital signal output by the controller 160 into an analog signal. Specifically, the digital-to-analog conversion module can be, but is not limited to, a digital-to-analog converter, a digital potentiometer, an F / V converter, etc.

[0050] In some exemplary embodiments, the voltage regulating circuit 110 is further configured to cut off the power supply during standby according to the enable signal output by the controller 160. Thus, by cutting off the power supply during standby, the risk of erroneous voltage output can be reduced while reducing losses. Specifically, when the enable signal output by the controller 160 is at a high level, the voltage regulating circuit 110 can be connected to an external power supply VCC to boost the DC power supply provided to the external power supply VCC, thereby charging the energy storage capacitor C101; when the enable signal output by the controller 160 is at a low level, the voltage regulating circuit 110 can disconnect from the external power supply VCC to cut off the power supply.

[0051] In some exemplary embodiments, the voltage detection module 130 is further configured to transmit the actual output voltage value measured by it to the controller 160, and the current detection module 140 is further configured to transmit the actual output current value measured by it to the controller 160, and the controller 160 is further configured to cut off or reduce the output energy when the actual output voltage value or the actual output current value is abnormal. Thus, by cutting off or reducing the output energy when the actual output voltage value or the actual output current value is abnormal (i.e., when the output state is abnormal), harm to the patient can be effectively avoided.

[0052] In some exemplary embodiments, the controller 160 is further configured to calculate the impedance value of the load RL according to the actual output voltage value measured by the voltage detection module 130 and the actual output current value measured by the current detection module 140 in the constant current mode or the constant voltage mode, and set the output voltage value of the voltage regulating circuit 110 according to the impedance value of the load RL. Thus, by calculating the impedance value of the load RL according to the actual output voltage value and the actual output current value, and setting the output voltage value of the voltage regulating circuit 110 according to the impedance value of the load RL, it is possible to effectively avoid excessive energy output to the human body and cause harm.

[0053] Specifically, the controller 160 is configured to control the voltage regulating circuit 110 to boost the DC power supply provided by the external power supply VCC with a set output voltage value by sending a corresponding voltage regulating signal to the voltage regulating circuit 110 in a constant current mode or a constant voltage mode.

[0054] Furthermore, when the controller 160 is a digital signal processor, the electric pulse generator provided by the present invention also includes an analog-to-digital conversion module (not shown in the figure), which is configured to convert the actual output voltage value measured by the voltage detection module 130 from an analog signal to a corresponding digital signal, and to convert the actual output current value measured by the current detection module 140 from an analog signal to a corresponding digital signal, so that the controller 160 can determine whether the output state of the electric pulse generator is abnormal.

[0055] In some exemplary embodiments, the controller 160 is configured to send a charging selection signal to the charge / discharge switch S101 when the actual output voltage value or the actual output current value is abnormal, so that the charge / discharge switch S101 disconnects the energy storage capacitor C101 from the attenuation circuit 120 and controls the voltage regulating circuit 110 to cut off the power supply. Thus, by first disconnecting the energy storage capacitor C101 from the attenuation circuit 120 and then cutting off the power supply when the output state of the electric pulse generator is abnormal, it is possible to effectively avoid harm to the patient.

[0056] In some exemplary embodiments, the monitoring control circuit 150 includes a control circuit 151 and a voltage / current switching switch S102 connected in series, and the voltage / current switching switch S102 is configured to turn on the voltage detection module 130 and the control circuit 151 in a constant voltage mode, and to turn on the current detection module 140 and the control circuit 151 in a constant current mode. Therefore, in the constant voltage mode, by switching the voltage / current switching switch S102 to the side of the voltage detection module 130 (that is, the voltage / current switching switch S102 is switched to point c in the figure), the voltage detection module 130 and the control circuit 151 can be turned on, so that in the constant voltage mode, the actual output voltage value measured by the voltage detection module 130 can be directly fed back to the control circuit 151, so as to be used together with the preset output voltage value as the input signal of the control circuit 151; in the constant current mode, by switching the voltage / current switching switch S102 to the side of the current detection module 140 (that is, the voltage / current switching switch S102 is switched to point d in the figure), the current detection module 140 and the control circuit 151 can be turned on, so that in the constant current mode, the actual output current value measured by the current detection module 140 can be directly fed back to the control circuit 151, so as to be used together with the preset output current value as the input signal of the control circuit 151.

[0057] Furthermore, the constant current or constant voltage mode can be selected by controlling the voltage / current switching switch S102 through a voltage / current selection signal. Specifically, when the controller 160 sends a voltage selection signal to the voltage / current switching switch S102, it indicates that the constant voltage mode is currently selected, and the voltage / current switching switch S102 is switched to the side where the voltage detection module 130 is located under the control of the voltage selection signal to conduct the voltage detection module 130 and the control circuit 151; when the controller 160 sends a current selection signal to the voltage / current switching switch S102, it indicates that the constant current mode is currently selected, and the voltage / current switching switch S102 is switched to the side where the current detection module 140 is located under the control of the current selection signal to conduct the current detection module 140 and the control circuit 151.

[0058] It should be noted that, as can be understood by those skilled in the art, the present invention does not limit the specific structure of the voltage / current switching switch S102. The voltage / current switching switch S102 can be a single-pole double-throw switch, or other switch circuit structures that achieve the same effect. For details, please refer to the relevant technologies known to those skilled in the art, which will not be listed one by one here.

[0059] Please continue to refer to Figure 2 , which is a schematic diagram of the structure of the monitoring control circuit 150 provided in one embodiment of the utility model. Figure 2 As shown, the control circuit 151 can be implemented by an amplifier AMP, and the amplifier AMP can be a differential input amplifier. The gain of the amplifier AMP can be set as needed. Of course, as those skilled in the art can understand, in some other embodiments, the control circuit 151 can also use circuits of other structures to achieve corresponding functions. It should be noted that V-ctrl in the figure represents the control signal output by the control circuit 151, and the attenuation circuit 120 adjusts the attenuation amount according to the control signal. M-set represents the preset output voltage value or the preset output current value (through Figure 1 The voltage / current selection signal in is sent to the control circuit 151), V / A-sel represents the voltage / current selection signal.

[0060] Please continue to refer to Figure 3 ,like Figure 3 As shown, the main difference between the electric pulse generator provided in this embodiment and the electric pulse generator provided in the previous embodiment is that the structure of the monitoring control circuit 150 is different. In this embodiment, the monitoring control circuit 150 includes a monitoring circuit 152 and a control circuit 151. The monitoring circuit 152 and the control circuit 151 are both connected to the controller 160. The voltage detection module 130 and the current detection module 140 are both connected to the monitoring circuit 152 to transmit the measured actual output voltage value and the actual output current value to the controller 160 through the monitoring circuit 152. The controller 160 is configured to send the actual output voltage value and the preset output voltage value to the control circuit 151 (via the constant voltage mode) in the constant voltage mode. Figure 3 The voltage / current control signal in the constant current mode is sent to the control circuit 151), and in the constant current mode, the actual output current value and the preset output current value are sent to the control circuit 151 (via Figure 3 The voltage / current control signal in is sent to the control circuit 151).

[0061] Specifically, in the constant voltage mode, the control circuit 151 can achieve the voltage constant output according to the actual output voltage value and the preset output voltage value. The relevant content can refer to the relevant content of the previous embodiment, and will not be repeated here. Similarly, in the constant current mode, the control circuit 151 can achieve the current constant output according to the actual output current value and the preset output current value. The relevant content can refer to the relevant content of the previous embodiment, and will not be repeated here.

[0062] It should be noted that although Figure 3The attenuation circuit 120 in the electric pulse generator provided in this embodiment is located on the low-voltage side of the output circuit for explanation. However, as those skilled in the art will appreciate, in some other implementations, the attenuation circuit 120 in the electric pulse generator provided in this embodiment may also be disposed on the high-voltage side of the output circuit. It should also be noted that, as those skilled in the art will appreciate, in order to avoid redundancy, this embodiment only describes in detail the differences between the electric pulse generator provided by it and the electric pulse generator provided by the previous embodiment, but does not describe the similarities between it and the electric pulse generator provided by the previous embodiment. For more information about the electric pulse generator provided by this embodiment, please refer to the relevant description of the electric pulse generator provided by the previous embodiment.

[0063] In order to realize the above idea, the present invention also provides a medical device, which includes the electric pulse generator described above. Since the medical device provided by the present invention includes the electric pulse generator provided by the present invention, the medical device provided by the present invention at least has all the beneficial effects of the electric pulse generator provided by the present invention. For details, please refer to the above description of the beneficial effects of the electric pulse generator provided by the present invention, so the beneficial effects of the medical device provided by the present invention will not be described in detail here.

[0064] In summary, compared with the prior art, the electric pulse generator and medical device provided by the utility model have the following beneficial effects:

[0065] The utility model can provide two pulse output modes, constant voltage and constant current, and the two pulse output modes of constant voltage and constant current are realized by the same set of attenuation circuit 120 and monitoring control circuit 150, which can be flexibly switched, not only meeting the current clinical use requirements, but also meeting the cutting-edge scientific research application requirements, bringing greater convenience to clinical and scientific research. At the same time, the utility model has a simple structure, has obvious improvements in reliability, and has a small overall volume, which is convenient for product miniaturization. In addition, the utility model is based on the structure of capacitor energy storage and discharge, and can achieve easy-to-control high-reliability electric pulse energy output. In addition, the utility model can monitor the output voltage through the voltage detection module 130, and can monitor the output current through the current detection module 140, thereby improving the accuracy and safety of the output pulse and meeting the requirements of clinical and scientific research applications.

[0066] It should be noted that, in the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0067] It should also be noted that the above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure content belong to the protection scope of the utility model. Obviously, technicians in this field can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. In this way, if these modifications and variations fall within the scope of the utility model and its equivalent technology, the utility model is also intended to include these modifications and variations.

Claims

1. An electric pulse generator, characterized in that: It includes a voltage regulating circuit, an energy storage capacitor, a charge / discharge switching switch, an attenuation circuit, a voltage detection module, a current detection module and a monitoring control circuit; The input end of the voltage regulating circuit is used to be connected to an external power supply, and the voltage regulating circuit is configured to boost the DC power supply provided by the external power supply, thereby providing a charging power supply for the energy storage capacitor; One end of the energy storage capacitor is connected to the charge / discharge switch, and the other end of the energy storage capacitor is grounded; The charge / discharge switch is configured to conduct the voltage regulating circuit and the energy storage capacitor during charging, and to conduct the energy storage capacitor and the attenuation circuit during discharge output; The attenuation circuit is configured to attenuate the electric energy output by the energy storage capacitor; The voltage detection module is configured to measure the actual output voltage value and feed it back to the monitoring control circuit; The current detection module is configured to measure the actual output current value and feed it back to the monitoring control circuit; The monitoring control circuit is configured to control the attenuation amount of the attenuation circuit according to the actual output voltage value and the preset output voltage value in the constant voltage mode to achieve a constant output voltage; and to control the attenuation amount of the attenuation circuit according to the actual output current value and the preset output current value in the constant current mode to achieve a constant output current.

2. The electric pulse generator according to claim 1, characterized in that: The monitoring control circuit is configured to control the attenuation circuit to reduce its attenuation amount when the actual output voltage value is less than the preset output voltage value; When the actual output voltage value is greater than the preset output voltage value, the attenuation circuit is controlled to increase its attenuation amount; and when the actual output voltage value is equal to the preset output voltage value, the attenuation amount of the attenuation circuit is controlled to remain unchanged.

3. The electric pulse generator according to claim 1, characterized in that: The monitoring control circuit is configured to control the attenuation circuit to reduce its attenuation when the actual output current value is less than the preset output current value; control the attenuation circuit to increase its attenuation when the actual output current value is greater than the preset output current value; and control the attenuation circuit to remain unchanged when the actual output current value is equal to the preset output current value.

4. The electric pulse generator according to claim 1, characterized in that: The electric pulse generator further includes a controller, the voltage regulating circuit, the charge / discharge switch and the monitoring control circuit are all connected to the controller, and the controller is configured to perform the following operations: Sending an enable signal to the voltage regulating circuit to control the voltage regulating circuit to boost the DC power supply provided by the external power supply; Sending a charging selection signal to the charge / discharge switching switch so that the charge / discharge switching switch turns on the voltage regulating circuit and the energy storage capacitor; or sending a discharging selection signal to the charge / discharge switching switch so that the charge / discharge switching switch turns on the energy storage capacitor and the attenuation circuit; In constant voltage mode, a preset output voltage value is sent to the monitoring control circuit, and in constant current mode, a preset output current value is sent to the monitoring control circuit; as well as The width of the discharge pulse is adjusted by controlling the duration of each discharge; the period or frequency of the discharge pulse is adjusted by controlling the time interval between two discharges.

5. The electric pulse generator according to claim 4, characterized in that: The voltage regulating circuit is further configured to cut off power supply during standby according to an enable signal output by the controller.

6. The electric pulse generator according to claim 4, characterized in that: The voltage detection module is also configured to transmit the actual output voltage value measured by it to the controller, and the current detection module is also configured to transmit the actual output current value measured by it to the controller. The controller is also configured to cut off or reduce the output energy when the actual output voltage value or the actual output current value is abnormal.

7. The electric pulse generator according to claim 6, characterized in that: The controller is configured to send a charging selection signal to the charge / discharge switch when the actual output voltage value or the actual output current value is abnormal, so that the charge / discharge switch disconnects the energy storage capacitor from the attenuation circuit and controls the voltage regulating circuit to cut off power supply.

8. The electric pulse generator according to claim 4, characterized in that: The controller is also configured to calculate the impedance value of the load according to the actual output voltage value measured by the voltage detection module and the actual output current value measured by the current detection module, and set the output voltage value of the voltage regulation circuit according to the impedance value of the load.

9. The electric pulse generator according to claim 4, characterized in that: The monitoring control circuit includes a monitoring circuit and a control circuit, both of which are connected to the controller, and the voltage detection module and the current detection module are connected to the monitoring circuit so as to transmit the measured actual output voltage value and the actual output current value to the controller through the monitoring circuit. The controller is configured to send the actual output voltage value and the preset output voltage value to the control circuit in a constant voltage mode, and to send the actual output current value and the preset output current value to the control circuit in a constant current mode.

10. The electric pulse generator according to claim 1, characterized in that: The monitoring control circuit includes a control circuit and a voltage / current switching switch connected in series, and the voltage / current switching switch is configured to conduct the voltage detection module and the control circuit in a constant voltage mode, and to conduct the current detection module and the control circuit in a constant current mode.

11. A medical device, characterized in that: The electric pulse generator comprises the electric pulse generator as claimed in any one of claims 1 to 10.

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