CN215452793U - Shock wave equipment - Google Patents
Shock wave equipment Download PDFInfo
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- CN215452793U CN215452793U CN202121321256.4U CN202121321256U CN215452793U CN 215452793 U CN215452793 U CN 215452793U CN 202121321256 U CN202121321256 U CN 202121321256U CN 215452793 U CN215452793 U CN 215452793U
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Abstract
The utility model relates to a shock wave equipment, including human-computer interaction module, control module, power module and high-pressure pulse output module, human-computer interaction module with the control module electricity is connected, power module is connected with control module and high-pressure pulse output module electricity respectively, high-pressure pulse output module is including the filtering energy storage module, full-bridge conversion boost module, rectification filter module, sampling module and the output module of circuit connection in proper order, full-bridge conversion boost module with the control module electricity is connected and is received the instruction that control module sent, sampling module with the control module electricity is connected and to control module feedback measured value. The equipment abandons high-voltage MOS tubes and IGBT elements commonly used in the prior art, so that key parts of the shock wave equipment do not depend on foreign import any more, the cost is reduced, the economic benefit is improved, and the safety of the equipment is also improved.
Description
Technical Field
The application belongs to the field of minimally invasive interventional therapy, and particularly relates to shock wave equipment.
Background
With the aging of the population and the improvement of the living standard, the incidence of vascular diseases increases year by year. The development of vascular conditions causes plaques in the vessel wall to evolve into calcium deposits, thereby narrowing the artery and restricting blood flow. When calcification of blood vessels occurs, the current major conventional practice is to use balloons for dilation, stent implantation or rotational atherectomy balloons to exfoliate plaque. However, these treatments have significant drawbacks, often associated with vascular injury and complications. Such as balloon dilatation and stent implantation, can produce tearing of the intima of the vessel, which often results in hyperplasia of the endothelium of the vessel, creating a risk of restenosis.
To solve this problem, the United states SHOCKWAVE MEDICAL (SHOCKWAVE MEDICAL) company proposed the use of the electro-hydrodynamic lithotripsy technique in angioplasty (patent application No.: 2014580040835.6). The basic principle of the method is that a certain electric field is applied to liquid, the liquid generates cavitation under the action of the electric field, bubbles generated by cavitation collapse instantly to generate shock waves, and therefore the purpose of breaking calcified pathological tissues is achieved on the premise that vascular intima is not damaged. In order to generate the shock wave, a high-voltage pulse power supply needs to be connected to generate an electric field with sufficient strength. In the existing high-voltage pulse output device, a high-voltage resistant transistor, such as a high-voltage MOS transistor or an IGBT transistor, must be used. However, such electronic devices are mostly monopolized by developed countries, have single purchase channels and high prices, and are difficult to use domestically. In addition, the prior art has a problem that an electric field is directly applied to the inside of the liquid, and the electric field intensity required for generating a shock wave of sufficient intensity is high and the current output is large.
Disclosure of Invention
The object of the present application is to overcome the drawbacks of the prior art and to design a new type of shock wave device that can generate the high voltage pulses required for shock wave balloon catheter systems even with common electronic components.
The purpose of the application is realized by the following technical scheme:
the utility model provides a shock wave equipment, includes human-computer interaction module, control module, power module and high-pressure pulse output module, human-computer interaction module with the control module electricity is connected, power module is connected with control module and high-pressure pulse output module electricity respectively, high-pressure pulse output module is including the filtering energy storage module, full-bridge transform boost module, rectification filter module, sampling module and the output module of circuit connection in proper order, full-bridge transform boost module with the control module electricity is connected and is received the instruction that control module sent, sampling module with the control module electricity is connected and to control module feedback measured value.
The above object of the present application can be further achieved by the following technical solutions:
in one embodiment, the power module is composed of a first power module and a second power module, the first power module is connected with the filtering and energy storing module, and the second power module is electrically connected with the control module.
In a preferred embodiment, a rectifier circuit is provided within the first power module.
In a preferred embodiment, the second power module is powered by the first power module, and an isolation device is provided between the first power module and the second power module.
In a preferred embodiment, a circuit breaker is provided within the first power module.
In a preferred embodiment, the first power module and the second power module are independent from each other, and the second power module is directly powered by an external power source.
In a preferred embodiment, the first power module is powered by ac220V mains.
In a preferred embodiment, the first power module is powered by a battery pack.
In a preferred embodiment, a surge suppression module is arranged between the first power supply module and the filtering and energy storage module, and the surge suppression module is electrically connected with the control module and receives a command sent by the control module.
In one embodiment, the full-bridge conversion boost module outputs a PWM signal to control the full-bridge conversion boost module, and the control module provides the PWM signal to a full-bridge converter in the full-bridge conversion boost module through an optical coupling isolation circuit.
In a preferred embodiment, the microcontroller used by the control module includes but is not limited to a single chip microcomputer, a PLC, a CPLD, and a DSP.
In one embodiment, the sampling module comprises a voltage detection module and a current detection module, the voltage detection module is composed of a voltage loop and used for detecting pulse voltage in the circuit, and the current detection module is composed of a current loop and used for detecting pulse current in the circuit.
Compare with prior art, the advantage of this application lies in:
1. according to the shock wave equipment, a high-voltage MOS tube and an IGBT element which are commonly used in the prior art are abandoned, and a full-bridge change boosting module is adopted for replacement, so that key parts of the shock wave equipment do not depend on foreign import any more, the cost is reduced, the economic benefit is improved, and the safety of the equipment is improved.
2. The pulse signal is replaced by the PWM signal, and the control is more accurate. In addition, the control module, the full-bridge conversion boosting module and the voltage/current detection module form a double closed-loop system, and the whole system forms effective two-stage protection through current sampling, voltage sampling and a circuit breaker arranged in a rectification circuit.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of a shockwave device of the present application.
Fig. 2 is a schematic structural diagram of a second embodiment of a shockwave device of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail below by referring to the accompanying drawings and examples.
Example one
As shown in fig. 1, a shock wave device 1 includes a human-computer interaction module 13, a control module 12, a power module 11 and a high-voltage pulse output module 14, the human-computer interaction module 13 is electrically connected to the control module 12, the power module 11 is electrically connected to the control module 12 and the high-voltage pulse output module 14, the high-voltage pulse output module 14 includes a filtering energy storage module 141, a full-bridge transformation voltage boosting module 142, a rectification filtering module 143, a sampling module 144 and an output module 145 which are sequentially connected by a circuit, the full-bridge transformation voltage boosting module 142 is electrically connected to the control module 12 and receives an instruction sent by the control module 12, the sampling module 144 is electrically connected to the control module 12 and feeds back a measured value to the control module 12. The control module 12 is a microcontroller and its associated circuitry as known in the art. High-voltage MOS tube or IGBT module in the shock wave equipment in the prior art is indispensable, but these components are all managed and controlled abroad, and are hardly bought at home. The high-voltage MOS pipe and the high-voltage IGBT module that must use among the prior art have been abandoned to this application, and adopt the full-bridge to change the module of stepping up and replace, not only make the key part of shock wave equipment no longer rely on the foreign import, the cost is reduced has improved economic benefits, but also has improved the security of equipment. As the circuit of the device in the prior art is in a high-voltage state as long as the device is started, the high-voltage breakdown can be caused by slight careless operation, and an operator is easily shocked by electricity in a standby state. This application is different then, and the shock wave equipment of this application is when standby state, and the highest voltage of major loop is commercial power 220V, only is the high-pressure state at operating condition, has greatly increased the security of system.
In one embodiment, the power module 11 is composed of a first power module 111 and a second power module 112, the first power module 111 is connected to the filtering and energy storing module 141, and the second power module 112 is electrically connected to the control module 12. A rectifying circuit is arranged in the first power module 111, and the rectifying circuit includes an ac common mode filter circuit and a full bridge rectifying circuit. After passing through the AC common mode filter circuit, the AC220V commercial power obtains a relatively stable voltage and outputs the voltage to the full bridge rectifier circuit, and then passes through the full bridge rectifier circuit to rectify the AC220V into a dc voltage, so as to complete the conversion from AC220V to dc. The second power module 112 is powered by the first power module 111, and an isolation device 113 is disposed between the first power module 111 and the second power module 112. In a preferred embodiment, a circuit breaker is provided within the first power module 111.
In particular, the mains AC220V is used for power supply in the present invention, which is considered from a simple perspective, and the present invention also supports battery pack power supply. If the battery pack is used for supplying power, the highest voltage of the main loop is the safe voltage when the shock wave equipment is in the standby state, and therefore the safety of the system is further improved.
In one embodiment, the filtering energy storage module 141 is a circuit formed by a plurality of capacitors, the plurality of capacitors form a capacitor matrix, the processed dc voltage enters the circuit of the filtering energy storage module 141 to achieve the purpose of filtering and storing energy, and the filtering energy storage module 141 enables the circuit at the rear end thereof to obtain a stable dc voltage, thereby improving the stability of current conversion of the device.
In one embodiment, the full-bridge inverter boost module 142 includes a full-bridge inverter, a full-bridge inverter driver module, and an isolated boost circuit. The voltage in the circuit of the filtering energy storage module 141 is converted into a pulse voltage through a full-bridge converter and a full-bridge conversion driving module (which is operated by the instruction of the control module), and then is converted into a pulse high-voltage through an isolation booster circuit (generally composed of a silicon stack and an isolation booster transformer).
In one embodiment, the rectifying and filtering module 143 outputs a bridge rectifying and capacitor filtering circuit, and the pulsed high voltage is adjusted to be a steady-state high voltage through the bridge rectifying and capacitor filtering circuit.
In one embodiment, the full-bridge conversion boost module 142 outputs a PWM signal to control through the control module 12, and the PWM signal replaces the pulse signal, so that the control is more accurate. The control module provides the PWM signal to the full-bridge converter in the full-bridge boost module 142 through an optical coupling isolation circuit. The micro controller used by the control module 12 includes but is not limited to a single chip microcomputer, a PLC, a CPLD, and a DSP. The rectifying and filtering module 143 is located at the rear end of the full-bridge converter, and can directly output a rectified pulse signal.
In one embodiment, the sampling module 144 includes a voltage detection module and a current detection module, the voltage detection module is formed by a voltage loop and includes a voltage step-down detection circuit for detecting a pulse voltage in the circuit, and the current detection module is formed by a current loop and includes a current-to-voltage conversion circuit for detecting a pulse current in the circuit. The voltage ring is obtained by carrying out voltage reduction sampling on the output voltage and then is sent to the control module, and the control module controls the output voltage amplitude through calculation. The current loop is obtained by sampling through a sampling resistor connected in series in the output loop, and is amplified by the amplifying circuit and then fed back to the control module 12 to control the output current of the system. The sampling module 144 detects the steady-state high-voltage from the rectifying and filtering module 143 in real time, feeds the measured value back to the control module 12, and the control module 12 sends a control command to the surge suppressing module 19 and the full-bridge conversion boosting module 142 through calculation to adjust the output voltage and current in real time, so as to achieve the purpose of closed-loop control.
In one embodiment, an isolation device is disposed between the first power module 111 and the second power module 112, and the second power module 112 is powered by the first power module 111. In a preferred embodiment, a circuit breaker and an isolation module are arranged in the first power supply module, and the circuit breaker cuts off a circuit when the system current is too large or short-circuited, so that the system is protected; the isolation module isolates the circuits of the whole system from an external power supply, so that the system is in a floating point mode. In another embodiment, the second power module 112 is directly powered by an external power source. The first power module 111 and the second power module 112 are isolated from each other and are not grounded, so that the control module can be prevented from being damaged by high voltage, and people can be prevented from getting electric shock.
The control module, the full-bridge conversion boost module and the voltage/current detection module form a double closed-loop system, and the whole system forms effective two-stage protection through current sampling, voltage sampling and a circuit breaker arranged in a rectification circuit.
In use, after the shock wave device 1 supplies power to the control module 12 through the second power module 112 (which may also be referred to as an auxiliary power module), the control module 12 is started, and the human-computer interaction module 13 electrically connected with the control module 12 is lighted. The man-machine interaction module comprises a display screen and a key. The operator operates the shockwave device 1 with the human-machine interaction module 13 and monitors the shockwave device 1 with information fed back by the human-machine interaction module 13. The first power module 111 is connected with a 220V mains supply, a rectifying circuit inside the first power module 111 rectifies AC220V to a direct current voltage to complete conversion from the mains supply AC220V from alternating current to direct current, the first power module 111 is started to supply power to the filtering energy storage module 141, the filtering energy storage module 141 provides a stable direct current voltage for a full-bridge conversion boost module 142 connected with the filtering energy storage module, the full-bridge conversion boost module 142 converts the direct current voltage into a pulse high voltage, and the pulse high voltage is output and filtered through a rectifying and filtering module 143 and is input to an output module 145 after being sampled by a sampling module 144. An operation can be performed on the human-machine interaction module 13 to initiate the pulse function, and the initiating command is transmitted to the control module 12. The control module 12 receives the command and activates the full-bridge boost converter 142 upon command. The full-bridge conversion boost module 142 performs conversion boost according to the PWM command of the control module 12 to form pulse voltage, and the pulse voltage flows to the rectification filter module 143 electrically connected thereto. The sampling module 144 receives the pulse voltage from the rectifying and filtering module 143, collects the current and voltage parameters, and feeds back the data to the control module 12 as the basis for adjusting the control parameters of the control module 12, and the sampling module 144 inputs the pulse current to the output module 145. After receiving the pulse voltage, the output module 145 outputs the pulse voltage to the shockwave balloon catheter through a special high-voltage-resistant interface. The pulse high-voltage output device 1 of the present application is provided with the sampling module 144, and after the sampling module 144 feeds back data to the control module 12, the control module 12 compares the data with the set data and adjusts the data, so that the output voltage/current more conforms to the set value. Meanwhile, the data can also be used for detecting the abnormality of the equipment, and by comparing the data collected by the sampling module 144 with a set value, whether the operation of the device is normal or not can be judged, for example, whether an output error exists or not can be judged, and whether the device is operated regularly and quantitatively according to a set mode or not can be judged.
Example two
The difference between the present embodiment and the first embodiment is: the power supply mode is changed, and a surge suppression module 146 is arranged between the first power module 111 and the filtering energy storage module 141. As shown in fig. 2, a shock wave device 1 comprises a man-machine interaction module 13, a control module 12, a power supply module 11 and a high-voltage pulse output module 14, the human-computer interaction module 13 is electrically connected with the control module 12, the power supply module 11 is respectively electrically connected with the control module 12 and the high-voltage pulse output module 14, the high-voltage pulse output module 14 comprises a surge suppression module 146, a filtering energy storage module 141, a full-bridge conversion boosting module 142, a rectification filtering module 143, a sampling module 144 and an output module 145 which are sequentially connected in circuit, the surge suppression module 146 is electrically connected to the control module 12 and receives commands from the control module 12, the full-bridge boost converter 142 is electrically connected to the control module 12 and receives commands from the control module 12, the sampling module 144 is electrically connected to the control module 12 and feeds back measurements to the control module 12.
In one embodiment, the surge suppression module 146 includes a power-on current limiter 1461, a dc voltage detection module 1462 and a dc path conversion module 1463, the dc voltage obtained from the rectification circuit first passes through the power-on current limiter 1461 to avoid damage to the device due to an excessive current impact on the circuit when the device is powered on, and the dc voltage detection module 1462 and the dc path conversion module 1463 in the surge suppression circuit receive an instruction from the control module to adjust a voltage value/a current value in the circuit, thereby avoiding a surge voltage/current condition in the circuit. The surge suppression module 146 not only limits the instantaneous high current during the device start-up process, but also avoids the impact on the utility grid.
In one embodiment, the first power module 111 and the second power module 112 are independent, the first power module 111 is powered by a battery or a battery pack, and the second power module is directly powered by an external power source.
In use, after the shock wave device 1 supplies power to the control module 12 through the second power module 112 (which may also be referred to as an auxiliary power module), the control module 12 is started, and the human-computer interaction module 13 electrically connected with the control module 12 is lighted. The man-machine interaction module comprises a display screen and a key. The operator operates the shockwave device 1 with the human-machine interaction module 13 and monitors the shockwave device 1 with information fed back by the human-machine interaction module 13. The first power module 111 is connected with a battery or a battery pack, the first power module 111 is started to supply power to the surge suppression module 19, and the surge suppression module 19 limits instantaneous large current in the starting process of the device and simultaneously avoids impact on a commercial power network. The current output from the surge suppression module 19 supplies power to the filtering energy storage module 14, the filtering energy storage module 14 provides a stable dc voltage for the full-bridge conversion boost module 142 connected thereto, the full-bridge conversion boost module 142 converts the dc voltage into a pulse high voltage, and the pulse high voltage is filtered by the rectifier filter module 143, sampled by the sampling module 144, and then input to the high-voltage pulse output module 145. An operation can be performed on the human-machine interaction module 13 to initiate the pulse function, and the initiating command is transmitted to the control module 12. The control module 12 receives the command and activates the full-bridge boost converter 142 upon command. The full-bridge conversion boost module 142 performs conversion boost according to the PWM command of the control module 12 to form pulse voltage, and the pulse voltage flows to the rectification filter module 143 electrically connected thereto. The sampling module 144 receives the pulse voltage from the rectifying and filtering module 143, collects the current and voltage parameters, and feeds back the data to the control module 12 as the basis for adjusting the control parameters of the control module 12, and the sampling module 144 inputs the pulse current to the high-voltage pulse output module 145. After receiving the pulse voltage, the high-voltage pulse output module 145 outputs the pulse voltage to the shockwave balloon catheter through a special high-voltage-resistant interface.
The above description of the present invention is provided to enable those skilled in the art to make and use the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.
Claims (10)
1. The utility model provides a shock wave equipment, includes human-computer interaction module, control module, power module and high-voltage pulse output module, human-computer interaction module with the control module electricity is connected, a serial communication port, power module is connected with control module and high-voltage pulse output module electricity respectively, high-voltage pulse output module is including the filtering energy storage module, full-bridge conversion boost module, rectification filter module, sampling module and the output module of circuit connection in proper order, full-bridge conversion boost module with the control module electricity is connected and is received the instruction that control module sent, sampling module with the control module electricity is connected and to control module feedback measured value.
2. The shockwave device of claim 1, wherein said power module comprises a first power module and a second power module, said first power module being coupled to said filtering and energy storage module, said second power module being electrically coupled to said control module.
3. The shockwave device of claim 2 wherein a rectifying circuit is disposed within said first power module.
4. The shockwave device of claim 2 wherein said second power module is powered by said first power module, and wherein an isolation device is disposed between said first and second power modules.
5. The shockwave device of claim 4, wherein a circuit breaker is disposed within said first power module.
6. The shockwave device of claim 2, wherein said first power module and said second power module are independent of each other, said second power module being directly powered by an external power source.
7. The shockwave device of claim 2 wherein said first power module is powered by ac220V mains or said first power module is powered by a battery pack.
8. The shock wave device of claim 2, wherein a surge suppression module is disposed between the first power module and the filtering energy storage module, the surge suppression module being electrically connected to the control module and receiving instructions from the control module.
9. The shock wave device of claim 1, wherein the full-bridge boost converter module is controlled by the control module outputting a PWM signal, and the control module provides the PWM signal to a full-bridge converter of the full-bridge boost converter module through an optical coupling isolation circuit.
10. The shockwave device of claim 1 wherein said sampling module comprises a voltage detection module comprised of a voltage loop for detecting a pulsed voltage in the circuit and a current detection module comprised of a current loop for detecting a pulsed current in the circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121321256.4U CN215452793U (en) | 2021-06-11 | 2021-06-11 | Shock wave equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121321256.4U CN215452793U (en) | 2021-06-11 | 2021-06-11 | Shock wave equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113367769A (en) * | 2021-06-11 | 2021-09-10 | 南京欣科医疗器械有限公司 | High-voltage pulse output device and shock wave balloon catheter system using same |
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2021
- 2021-06-11 CN CN202121321256.4U patent/CN215452793U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113367769A (en) * | 2021-06-11 | 2021-09-10 | 南京欣科医疗器械有限公司 | High-voltage pulse output device and shock wave balloon catheter system using same |
| CN113367769B (en) * | 2021-06-11 | 2024-04-02 | 南京欣科医疗器械有限公司 | High-voltage pulse output device and shock wave balloon catheter system using same |
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