Extracorporeal shock wave therapy device and protection system thereof

Abstract

The present invention discloses a protection system. When the transducer is not connected to the output end of the high-voltage controller, the high-voltage electrical energy output by the high-voltage controller will all act on the conductive coil and generate a magnetic field. The control device can determine that there is a high-voltage output but the transducer is not connected by using the magnetic field strength exceeding a first preset threshold value as a sign, and control the alarm to sound an alarm, so that the user can connect the transducer or turn off the high-voltage output in time, reducing the possibility of user accidents and improving the safety of the extracorporeal shock wave therapy device. In addition, by detecting the magnetic field strength after electromagnetic conversion, the high voltage can be isolated from the control device, meeting the safety requirements of medical devices. The present invention also discloses an extracorporeal shock wave therapy device, which has the same beneficial effects as the above protection system.

Description

Technical Field

[0001] The present invention relates to the field of extracorporeal shock wave therapy apparatus, in particular to a protection system. The present invention also relates to an extracorporeal shock wave therapy apparatus. Background Art

[0002] Figure 2 This is a structural diagram of an extracorporeal shock wave therapy device in the prior art. As an emerging therapeutic device, the extracorporeal shock wave therapy device usually includes a host and a handle. The high-voltage controller in the host can provide high-voltage electrical energy, while the transducer in the handle may convert the high-voltage electrical energy into mechanical energy and ultimately act on a designated part of the human body in the form of vibration. The transducer is detachably connected to the output end of the high-voltage controller through a connector.

[0003] During the use of the extracorporeal shock wave therapy device, the user may accidentally turn on the high-voltage output of the high-voltage controller without connecting the transducer to the high-voltage controller. Since the connector at the output end of the high-voltage controller is exposed at this time, electrical accidents are likely to occur, and safety is poor.

[0004] Therefore, how to provide a solution to the above technical problems is a problem that those skilled in the art need to solve at present. Summary of the Invention

[0005] An object of the present invention is to provide a protection system that reduces the possibility of user accidents, improves the safety of extracorporeal shock wave therapy devices, and meets the safety requirements of medical devices; another object of the present invention is to provide an extracorporeal shock wave therapy device including the above-mentioned protection system to meet the safety requirements of medical devices.

[0006] To solve the above technical problems, the present invention provides a protection system, comprising:

[0007] A conductive coil connected to the output terminal of a high-voltage controller in an extracorporeal shock wave therapy device, for receiving the voltage output by the high-voltage controller and generating a magnetic field;

[0008] a magnetic field strength detection device for detecting the magnetic field strength of the magnetic field around the conductive coil;

[0009] A control device connected to the magnetic field strength detection device, used to control the alarm to sound an alarm when the magnetic field strength is higher than a first preset threshold;

[0010] The alarm is connected to the control device.

[0011] Preferably, the protection system further comprises:

[0012] a capacitance detection device connected to the control device, for detecting the capacitance of the transducer in the extracorporeal shock wave therapy device when the transducer is connected only to itself;

[0013] a prompter connected to the control device;

[0014] The control device is further configured to control the prompter to prompt the user to replace the transducer when the capacitance value is less than a second preset threshold value.

[0015] Preferably, the control device is further configured to:

[0016] When the magnetic field strength is greater than a third preset threshold, controlling the prompter to prompt that the high-voltage controller has a high-voltage breakdown fault or an internal discharge fault;

[0017] When the magnetic field strength is less than a fourth preset threshold, controlling the prompter to prompt that an open circuit fault or a component damage fault exists in the high-voltage controller;

[0018] The third preset threshold is greater than the first preset threshold, and the first preset threshold is greater than the fourth preset threshold.

[0019] Preferably, the capacitance detection device includes a relay, a capacitance detection circuit and a connecting component;

[0020] The common end of the relay is connected to the first end of the connecting component, the second end of the connecting component is suspended, the normally closed contact of the relay is connected to the output end of the high-voltage controller, the normally open contact of the relay is connected to the detection end of the capacitance detection circuit, the control coil of the relay is connected to the control device, and the output end of the capacitance detection circuit is connected to the control device;

[0021] The capacitance detection circuit is configured to detect the capacitance of the transducer when the control coil is energized and the second end of the connecting component is connected to the transducer;

[0022] The control device is then further used to control the energization and de-energization of the control coil.

[0023] Preferably, the capacitance detection circuit includes a timer and a peripheral circuit connected thereto.

[0024] Preferably, the magnetic field strength detection device includes:

[0025] a magnetic induction sensor, for detecting the magnetic field strength of the magnetic field around the conductive coil;

[0026] The filtering device is connected to the output end of the magnetic induction sensor and the control device respectively, and is used to filter the signal corresponding to the magnetic field strength.

[0027] Preferably, the filtering device is a low-pass filter.

[0028] Preferably, the alarm is a buzzer.

[0029] Preferably, the control device comprises:

[0030] an analog-to-digital converter connected to the magnetic field strength detection device, for performing analog-to-digital conversion on a signal corresponding to the magnetic field strength;

[0031] The main controller of the extracorporeal shock wave therapy device connected to the analog-to-digital converter is used to control the alarm to sound an alarm when the magnetic field intensity is higher than a first preset threshold.

[0032] In order to solve the above technical problems, the present invention also provides an extracorporeal shock wave therapy device, comprising the protection system as described above.

[0033] The present invention provides a protection system. When the transducer is not connected to the output end of the high-voltage controller, the high-voltage electric energy output by the high-voltage controller will all act on the conductive coil and generate a magnetic field. The control device can determine that there is a high-voltage output but the transducer is not connected at this time through the sign that the magnetic field strength exceeds the first preset threshold, and control the alarm to sound an alarm, so that the user can connect the transducer or turn off the high-voltage output in time, reducing the possibility of user accidents and improving the safety of the extracorporeal shock wave therapy device. In addition, by detecting the magnetic field strength after electromagnetic conversion, the high voltage can be isolated from the control device, meeting the safety requirements of medical devices.

[0034] The present invention also provides an extracorporeal shock wave therapy device having the same beneficial effects as the above protection system. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the prior art and the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1 A schematic structural diagram of a protection system provided by the present invention;

[0037] Figure 2 It is a structural diagram of an extracorporeal shock wave therapy device in the prior art;

[0038] Figure 3 A schematic structural diagram of a capacitance detection circuit provided by the present invention;

[0039] Figure 4 This is a structural schematic diagram of a magnetic induction sensor provided by the present invention. DETAILED DESCRIPTION

[0040] The core of the present invention is to provide a protection system that reduces the possibility of user accidents, improves the safety of extracorporeal shock wave therapy devices, and meets the safety requirements of medical devices; another core of the present invention is to provide an extracorporeal shock wave therapy device including the above-mentioned protection system to meet the safety requirements of medical devices.

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0042] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a protection system provided by the present invention, which includes:

[0043] A conductive coil 1 connected to the output terminal of a high-voltage controller in an extracorporeal shock wave therapy device, for receiving the voltage output by the high-voltage controller and generating a magnetic field;

[0044] The magnetic field strength detection device 2 is used to detect the magnetic field strength of the magnetic field around the conductive coil 1;

[0045] The control device 3 connected to the magnetic field strength detection device 2 is used to control the alarm 4 to sound an alarm when the magnetic field strength is higher than a first preset threshold;

[0046] An alarm device 4 is connected to the control device 3 .

[0047] Specifically, considering the technical problems in the above background technology, the present application intends to design a protection system to promptly detect the dangerous situation of "the handle is not connected to the host, but the high-voltage controller is turned on to output high voltage", and to warn the user so that the user can quickly turn off the high-voltage output of the high-voltage controller or promptly connect the handle to the host (so that the output end of the high-voltage controller is no longer exposed to the outside). In addition, considering that the safety requirements of medical devices point out that the control part of the medical device should not be coupled with the application part (treatment head), the present application connects the conductive coil 1 to the output end of the high-voltage controller. As long as the high-voltage output is turned on, the conductive coil 1 can generate a magnetic field based on the received voltage. The magnetic field strength detection device 2 then detects the magnetic field strength of the magnetic field around the conductive coil 1 and determines whether the "handle is not connected to the host" based on the magnetic field strength. Once the two are found to be unconnected, the alarm 4 can be controlled to sound an alarm. Due to the electromagnetic conversion, the control device 3 of the protection system in the present application is not coupled with the application part where the high voltage is located, which meets the safety requirements of medical devices.

[0048] Among them, the conductive coil 1 is connected to the output end of the high-voltage controller, and the transducer can be connected to the output end of the high-voltage controller when the handle is connected to the host. Since the transducer is actually composed of a large number of piezoelectric ceramic crystals, each piezoelectric ceramic crystal can be regarded as a small capacitor. When receiving the high-voltage pulse output by the high-voltage controller, each piezoelectric ceramic crystal can be charged and convert electrical energy into mechanical energy and act on the human body. Therefore, at this time, the resistance of the transducer can be regarded as close to zero (while the resistance of the conductive coil 1 is much greater than zero). That is to say, when the transducer is connected, the voltage received by the conductive coil 1 is actually very small, so the magnetic field strength of the magnetic field around it is very small. When the transducer is not connected to the high-voltage controller, the electrical energy of the high-voltage controller will be fully provided to the conductive coil 1. At this time, since the received voltage is very large, the magnetic field strength of the magnetic field around it is very strong. Therefore, in the embodiment of the present invention, the magnetic field strength around the coil and the first preset threshold can be used to determine whether the transducer is connected.

[0049] The first preset threshold value can be set independently, and is not limited in the embodiment of the present invention.

[0050] The present invention provides a protection system. When the transducer is not connected to the output end of the high-voltage controller, the high-voltage electric energy output by the high-voltage controller will all act on the conductive coil 1 and generate a magnetic field. The control device 3 can determine that there is a high-voltage output but the transducer is not connected at this time through the sign that the magnetic field strength exceeds the first preset threshold, and control the alarm 4 to sound an alarm, so that the user can connect the transducer or turn off the high-voltage output in time, reducing the possibility of user accidents and improving the safety of the extracorporeal shock wave therapy device. In addition, by detecting the magnetic field strength after electromagnetic conversion, the high voltage can be isolated from the control device 3 to meet the safety requirements of medical devices.

[0051] Based on the above embodiment:

[0052] As a preferred embodiment, the protection system further includes:

[0053] A capacitance detection device connected to the control device 3, used to detect the capacitance of the transducer in the extracorporeal shock wave therapy device when the transducer is connected only to itself;

[0054] A prompter connected to the control device 3;

[0055] The control device 3 is further configured to control the prompter to prompt the user to replace the transducer when the capacitance value is less than a second preset threshold value.

[0056] Specifically, considering that the core components of the transducer of the extracorporeal shock wave therapy device are a large number of piezoelectric ceramic crystals, which are capacitive devices, if some of the piezoelectric ceramic crystals expire or are damaged over time, the overall capacitance of the transducer will decrease, which also means that the treatment effect of the extracorporeal shock wave therapy device has deteriorated. Therefore, in the embodiments of the present invention, it is intended to promptly detect the situation where "the transducer needs to be replaced" by detecting the capacitance of the transducer.

[0057] Among them, taking into account the safety requirements of medical devices, in the embodiment of the present invention, when testing the capacitance, the transducer is only allowed to be connected to the control device 3 only through the capacitance detection device, and will not be connected to the high-voltage controller. In order to achieve this connection mode, a connector component similar to the host side can also be set on the capacitance detection device, so that the capacitance detection device can be separately connected to the handle and detect the capacitance of the transducer.

[0058] Specifically, the second preset threshold can be set independently according to actual conditions, and its value must be smaller than the normal capacitance value of the transducer in a healthy state. The control device 3 in the present application can further calculate the conversion efficiency of the transducer (the ratio of the current capacitance value to the normal capacitance value) based on the current capacitance value and the normal capacitance value, and give a prompt when the conversion efficiency is smaller than the corresponding preset conversion efficiency threshold value. The embodiments of the present invention are not limited here.

[0059] As a preferred embodiment, the control device 3 is further configured to:

[0060] When the magnetic field strength is greater than a third preset threshold, the control prompter prompts that the high-voltage controller has a high-voltage breakdown fault or an internal discharge fault;

[0061] When the magnetic field strength is less than a fourth preset threshold, the control prompter prompts that the high-voltage controller has an open circuit fault or a component damage fault;

[0062] The third preset threshold is greater than the first preset threshold, and the first preset threshold is greater than the fourth preset threshold.

[0063] Specifically, considering that the voltages received by the transducer and the conductive coil 1 from the high-voltage controller are in a trade-off relationship, that is, when the transducer conversion efficiency is high, the conductive coil 1 receives less energy; conversely, when the transducer conversion efficiency is low, the excitation device receives more energy. Furthermore, since the energy output by the high-voltage controller is constant, when the transducer is offline or not connected to the host, the energy output by the high-voltage controller is completely consumed by the conductive coil 1. At this time, the magnetic field intensity detection device 2 outputs the maximum value, adjusts the acquisition position of the magnetic field sensor, and records the analog-to-digital conversion ADC value (representing the magnetic field intensity) acquired by the control device 3. This acquired value is recorded as a third preset threshold. When the high-voltage controller output energy is at the lowest level, the ADC value (representing the magnetic field intensity) acquired by the control device 3 can be recorded as a fourth preset threshold. If the test value is much greater than the third preset threshold, the high-voltage controller may have a high-voltage breakdown or internal discharge, and the high-voltage controller must be replaced. If the test value is much less than the fourth preset threshold, the high-voltage controller may have an open circuit or a damaged component, and the high-voltage controller must be replaced.

[0064] As a preferred embodiment, the capacitance detection device includes a relay, a capacitance detection circuit and a connecting component;

[0065] The common terminal of the relay is connected to the first terminal of the connecting component, the second terminal of the connecting component is suspended, the normally closed contact of the relay is connected to the output terminal of the high-voltage controller, the normally open contact of the relay is connected to the detection terminal of the capacitance detection circuit, the control coil of the relay is connected to the control device 3, and the output terminal of the capacitance detection circuit is connected to the control device 3;

[0066] a capacitance detection circuit, for detecting the capacitance of the transducer when the control coil is energized and the second end of the connecting component is connected to the transducer;

[0067] The control device 3 is then further used to control the energization and de-energization of the control coil.

[0068] Specifically, the capacitance detection device in the embodiment of the present invention can be built into the host, and the transducer can be controlled to be connected to the high-voltage controller / capacitance detection circuit through a relay (high-voltage relay) to meet different needs.

[0069] The connecting component can cooperate with the connecting component on the handle to electrically connect the transducer and the common end of the relay.

[0070] Specifically, when the transducer needs to work normally, the control coil can be de-energized, and when capacitance detection is required, the control coil can be energized. The user can send instructions to the control device 3 through the human-computer interaction device to complete the power on and off control.

[0071] To better illustrate the embodiments of the present invention, please refer to Figure 3 , Figure 3 This is a structural diagram of a capacitance detection circuit provided by the present invention. As a preferred embodiment, the capacitance detection circuit includes a timer and a peripheral circuit connected thereto.

[0072] Specifically, the capacitance detection circuit with a timer as the core has the advantages of simple structure and low cost.

[0073] Among them, Figure 3 In the figure, the peripheral circuit of the timer includes resistor R15, resistor R16, resistor R17, capacitor C15, capacitor C16 and a 12V voltage source. U6 is a timer. The lower end of R16, pin 2 and pin 6 of U6 are connected to the normally open contact of the relay, and pin 1 of U6 is connected to the ground terminal of the relay.

[0074] Specifically, when the transducer and the capacitance detection circuit are connected, the detection circuit outputs a square wave of a certain frequency. When the handle is not connected to the host, or the transducer is normally connected to the high-voltage controller, the capacitance detection circuit is not connected to the transducer, so it outputs a fixed high level. The control device 3 can calculate the capacitance of the transducer by the frequency of the square wave output by the capacitance detection circuit. The relationship between the frequency, the capacitance detection circuit, and the capacitance of the transducer is:

[0075] F=1.44 / (R15+2*R16) / C0;

[0076] Wherein, F is the frequency of the square wave output by the capacitance detection circuit, and C0 is the capacitance of the transducer.

[0077] Of course, in addition to the above specific forms, the capacitance detection circuit can also be of many other types, which is not limited in the embodiment of the present invention.

[0078] To better illustrate the embodiments of the present invention, please refer to Figure 4 , Figure 4This is a structural diagram of a magnetic induction sensor provided by the present invention. As a preferred embodiment, the magnetic field strength detection device 2 includes:

[0079] A magnetic induction sensor for detecting the magnetic field strength of the magnetic field around the conductive coil 1;

[0080] The filtering device connected to the output end of the magnetic induction sensor and the control device 3 respectively is used to filter the signal corresponding to the magnetic field intensity.

[0081] Specifically, in Figure 4 In the figure, U4 is a magnetic induction sensor chip, and resistors R7-R11 and capacitor C11 form its peripheral circuit. The default accuracy of the magnetic induction sensor is 0.4mV / G, and the accuracy of the magnetic induction sensor is adjustable. The accuracy is A=[1+R11 / (R8||R9)]*0.4mV / G.

[0082] Specifically, although the magnetic induction sensor itself has temperature compensation and signal conditioning circuits, the output signal still contains a lot of noise. Therefore, in the embodiment of the present invention, a filtering device is selected to filter out the noise in the signal.

[0083] As a preferred embodiment, the filtering device is a low-pass filter.

[0084] Specifically, the low-pass filter can filter out high-frequency noise and has strong applicability.

[0085] Of course, in addition to the low-pass filter, the filtering device may also be of other types, which is not limited in the embodiment of the present invention.

[0086] As a preferred embodiment, the alarm 4 is a buzzer.

[0087] Specifically, the buzzer has the advantages of small size, low cost and good alarm effect.

[0088] Of course, in addition to the buzzer, the alarm 4 can also be of many other types, which is not limited in the embodiment of the present invention.

[0089] As a preferred embodiment, the control device 3 includes:

[0090] An analog-to-digital converter connected to the magnetic field strength detection device 2, used to perform analog-to-digital conversion on a signal corresponding to the magnetic field strength;

[0091] The main controller of the extracorporeal shock wave therapy device connected to the analog-to-digital converter is used to control the alarm 4 to sound an alarm when the magnetic field intensity is higher than a first preset threshold value.

[0092] Specifically, the use of the main controller of the extracorporeal shock wave therapy apparatus can save costs, and the main controller of the extracorporeal shock wave therapy apparatus has excellent performance and a long service life.

[0093] Of course, in addition to the main controller of the extracorporeal shock wave therapy device, the control device 3 can also be an additional processor, which is not limited in the embodiment of the present invention.

[0094] In order to solve the above technical problems, the present invention also provides an extracorporeal shock wave therapy device, including the protection system as described in the above embodiments.

[0095] For an introduction to the extracorporeal shock wave therapy apparatus provided by an embodiment of the present invention, reference may be made to the aforementioned embodiment of the protection system, and the embodiment of the present invention will not be described in detail here.

[0096] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the embodiments can be referred to each other. It should also be noted that in this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment 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 equipment. In the absence of further restrictions, the elements defined by the sentence "comprise a..." do not exclude the presence of other identical elements in the process, method, article or equipment including the element.

[0097] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A protection system, characterized in that: include: A conductive coil connected to the output terminal of a high-voltage controller in an extracorporeal shock wave therapy device, for receiving the voltage output by the high-voltage controller and generating a magnetic field; a magnetic field strength detection device for detecting the magnetic field strength of the magnetic field around the conductive coil; A control device connected to the magnetic field strength detection device, used to control the alarm to sound an alarm when the magnetic field strength is higher than a first preset threshold; the alarm connected to the control device; The control device is specifically used to: When the magnetic field strength is higher than a first preset threshold, it is determined that the high-voltage controller has a high-voltage output and is not connected to the transducer, and an alarm is controlled to sound an alarm; a prompter connected to the control device; The control device is also used for: When the magnetic field strength is greater than a third preset threshold, controlling the prompter to prompt that the high-voltage controller has a high-voltage breakdown fault or an internal discharge fault; When the magnetic field strength is less than a fourth preset threshold, controlling the prompter to prompt that an open circuit fault or a component damage fault exists in the high-voltage controller; The third preset threshold is greater than the first preset threshold, and the first preset threshold is greater than the fourth preset threshold; The magnetic field strength detection device comprises: a magnetic induction sensor, for detecting the magnetic field strength of the magnetic field around the conductive coil; The filtering device is connected to the output end of the magnetic induction sensor and the control device respectively, and is used to filter the signal corresponding to the magnetic field strength.

2. The protection system according to claim 1, characterized in that The protection system also includes: a capacitance detection device connected to the control device, for detecting the capacitance of the transducer in the extracorporeal shock wave therapy device when the transducer is connected only to itself; The control device is further configured to control the prompter to prompt the user to replace the transducer when the capacitance value is less than a second preset threshold value.

3. The protection system according to claim 2, characterized in that The capacitance detection device includes a relay, a capacitance detection circuit and a connecting component; The common end of the relay is connected to the first end of the connecting component, the second end of the connecting component is suspended, the normally closed contact of the relay is connected to the output end of the high-voltage controller, the normally open contact of the relay is connected to the detection end of the capacitance detection circuit, the control coil of the relay is connected to the control device, and the output end of the capacitance detection circuit is connected to the control device; The capacitance detection circuit is configured to detect the capacitance of the transducer when the control coil is energized and the second end of the connecting component is connected to the transducer; The control device is then further used to control the energization and de-energization of the control coil.

4. The protection system according to claim 3, characterized in that The capacitance detection circuit includes a timer and a peripheral circuit connected thereto.

5. The protection system according to claim 1, characterized in that The filtering device is a low-pass filter.

6. The protection system according to claim 1, characterized in that The alarm is a buzzer.

7. The protection system according to any one of claims 1 to 6, characterized in that: The control device comprises: an analog-to-digital converter connected to the magnetic field strength detection device, for performing analog-to-digital conversion on a signal corresponding to the magnetic field strength; The main controller of the extracorporeal shock wave therapy device connected to the analog-to-digital converter is used to control the alarm to sound an alarm when the magnetic field intensity is higher than a first preset threshold.

8. An extracorporeal shock wave therapy device, characterized in that: Comprising a protection system as claimed in any one of claims 1 to 7.

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