KR20210114115A - Extracorporeal shock waves genteratior and therapy device having the same - Google Patents

Abstract

The present invention relates to an extracorporeal shock wave generator capable of adjusting the pulse width of shock waves and a therapeutic device including the same. According to an embodiment of the present invention, the extracorporeal shock wave generator comprises: a control unit providing first and second control signals; a transformer unit boosting an AC power to a high voltage; a rectifying unit rectifying the high voltage boosted from the transformer unit; a charging/discharging unit charging or discharging the rectified high voltage; a discharging control unit operated according to the first control signal to discharge the high voltage charged in the charging/discharging unit; a voltage output unit outputting the discharged high voltage as a high voltage pulse to a piezo-handpiece; and a pulse control unit discharging the high voltage discharged from the charging/discharging unit by the second control signal output after the first control signal.

Description

Extracorporeal shock wave generator and treatment device having the same

An embodiment of the invention relates to an extracorporeal shock wave generator.

An embodiment of the invention relates to a medical device having an extracorporeal shock wave generator.

Extracorporeal Shock Wave Therapy (ESWT) is an alternative treatment for conservative therapy that precisely delivers shock waves to the surgical site. In particular, extracorporeal shock wave therapy can treat musculoskeletal disorders, diseases of joints or tendons, and muscle pain or damage without surgery. do. In particular, extracorporeal shock wave therapy applies a shock wave irradiated from the body to the lesion to help remodel blood vessels, and stimulates or reactivates the healing process of tendons and surrounding tissues and bones, resulting in pain reduction and improvement in function. .

However, although the conventional method of irradiating the treatment site with ultrasound for treatment has been commonly used, there is a problem in that more energy than necessary is applied to the human body.

An embodiment of the present invention may provide an extracorporeal shock wave generator capable of controlling the pulse width of the shock wave.

An embodiment of the present invention may provide an extracorporeal shock wave generator capable of removing unnecessary shock wave energy.

An embodiment of the present invention may provide an extracorporeal shock wave generator capable of blocking unnecessary energy due to a shock wave applied to a human body, and a medical device having the same.

An extracorporeal shock wave generator according to an embodiment of the present invention includes: a control unit providing first and second control signals; a transformer that boosts the AC power to a high voltage; a rectifying unit rectifying the high voltage boosted from the transformer unit; a charging/discharging unit for charging or discharging the rectified high voltage; a discharging control unit operating according to the first control signal to discharge the high voltage charged in the charging/discharging unit; a voltage output unit for outputting the discharged high voltage as a pulse of high voltage to the piezo handpiece; and a pulse controller for discharging the high voltage discharged from the charging/discharging unit by the second control signal output after the first control signal.

According to an embodiment of the present invention, a time difference between the first control signal and the second control signal may be a pulse width of the first signal signal.

According to an embodiment of the present invention, the pulse of the high voltage may be the same as the pulse width of the first control signal, and the pulse width may be output in a range of 1.5 μs to 2.5 μs.

According to an embodiment of the present invention, the discharge control unit may include: a first switching element that is turned on by the first control signal; a first transformer having a plurality of second windings for converting the voltage of the primary winding input by the first switching element into a gate voltage to the secondary winding; A gate terminal is connected from each of the secondary windings of the first transformer, and may include a plurality of first thyristors connected in series to conduction by a voltage supplied to the gate terminal.

According to an embodiment of the present invention, the pulse controller may include: a second switching element that is turned on by the second control signal; a second transformer having a plurality of second windings for converting the voltage of the primary winding input by the second switching element into a gate voltage to the secondary winding; A gate terminal is connected from each of the secondary windings of the second transformer, and may include a plurality of second thyristors connected in series to conduction by a voltage supplied to the gate terminal.

According to an embodiment of the invention, the anode end of the output side of the plurality of first thyristors and the cathode end of the input side of the plurality of second thylists are connected to the voltage output unit, and the number of the second thyristors is the number of the first thyristors. It can be the same as the number of listers.

A medical device according to an embodiment of the present invention may include the extracorporeal shock wave generator.

According to an embodiment of the invention, it is possible to block unnecessary energy of the shock wave applied to the human body. Accordingly, it is possible to improve the reliability of the extracorporeal shock wave generator.

By applying shock wave stimulation to body parts using the shock wave generated using the extracorporeal shock wave generator according to an embodiment of the present invention, pain occurring in joints such as plantar fasciitis, tennis elbow, Achilles tendon, shoulder, elbow, and ankle is relieved. By relieving the self-healing process at the same time, it has the effect of effectively treating chronic pain syndrome of the musculoskeletal system.

According to an embodiment of the present invention, it is possible to improve the reliability of an extracorporeal shock wave generator and a medical device having the same.

1 is a block diagram of an extracorporeal shock wave generator according to an embodiment of the present invention.
FIG. 2 is a detailed circuit configuration diagram of the shock wave voltage generator of FIG. 1 .
3 is an example of a waveform of each part of the shock wave voltage generator of FIG. 2 .
4A is an example of a waveform of the pulse output unit in FIG. 2 , and (B) is a waveform example of a conventional pulse output unit.
Figure 5 (A) is an example of the waveform output through the piezo handpiece in Figure 2, (B) is an example of the waveform of the conventional piezo handpiece.
6 and 7 are examples of a perspective view and a front view of a medical device having an extracorporeal shock wave generator according to an embodiment of the present invention.

Advantages and features of the present invention, and a method for achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only those of ordinary skill in the art to which the present invention pertains, to complete the disclosure of the present invention. It is provided to fully understand the scope of the present invention, and the present invention is only defined by the scope of the claims.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. As used herein, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, "comprises." and/or "comprising" does not exclude the presence or addition of one or more other components in addition to the stated components. Like reference numerals refer to like elements throughout, and "and/or" includes each and every combination of one or more of the recited elements. Although "first", "second", etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from another. Accordingly, it goes without saying that the first component mentioned below may be the second component within the spirit of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used herein will have the meaning commonly understood by those of ordinary skill in the art to which this invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless specifically defined explicitly.

Spatially relative terms "below", "beneath", "lower", "above", "upper", etc. It can be used to easily describe the correlation between a component and other components. A spatially relative term should be understood as a term that includes different directions of components during use or operation in addition to the directions shown in the drawings. For example, when a component shown in the drawing is turned over, a component described as “beneath” or “beneath” of another component may be placed “above” of the other component. can Accordingly, the exemplary term “below” may include both directions below and above. Components may also be oriented in other orientations, and thus spatially relative terms may be interpreted according to orientation.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The extracorporeal shock wave generator may be divided into a radial type, which physically creates a shock wave by collecting air pressure, and a focusing type, in which energy is concentrated by gathering an extracorporeal shock wave at a single point. An example of the invention may be applied to a focus type. The focus type may be selected from a piezo method for focusing using a crystal, an electromagnetic method, and an electrohydraulic method.

1 is a block diagram of an extracorporeal shock wave generator according to an embodiment of the present invention, FIG. 2 is a detailed circuit diagram of the shock wave voltage generator of FIG. 1, and FIG. 3 is an example of a waveform of each part of the shock wave voltage generator of FIG. 4 (A) is an example of the waveform of the voltage output unit in FIG. 2, (B) is an example of a waveform of the conventional voltage output unit, and FIG. 5 (A) is the output through the piezo handpiece in FIG. An example of a waveform, (B) is an example of a waveform of a conventional piezo handpiece.

1 and 2 , the extracorporeal shock wave generator may include a control unit 11 , an input unit 12 and a display unit 13 , a shock wave voltage generator 21 , and a piezo handpiece 31 . . According to the embodiment of the present invention, the pulse width (or output time) of the high voltage generated by the shock wave voltage generator 21 may be controlled to prevent the remaining energy of the shock wave from being unnecessarily applied to the human body. In the extracorporeal shock wave generator, the high voltage output by the shock wave voltage generator 21 is transmitted to the piezo element of the piezo handpiece 31, and the shock wave is generated and output.

The control unit 11 may receive various operation modes from the user through the input unit 12 to control each unit, and the necessary information may be transmitted or displayed to the user through the display unit 13 or input through a touch operation. can When AC power is supplied by a power input unit (SMPS, not shown), the control unit 11 controls the converted DC power to supply a constant voltage to each unit. In addition, the user can select a mode for a piezo handpiece and a mode for a pneumatic handpiece displayed on the display unit 13 through the input unit 12, and the control unit 11 controls each component for the selected mode. can The control unit 11 performs operation of the device, control of the storage function, control of input and output of each signal, screen control of the display unit 13, touch signal control, and control of the generation cycle and output cycle of each function can do.

The shock wave voltage generator 21 may include a transformer 22 , a rectifier 23 , a charge/discharge unit 24 , a discharge control unit 25 , a pulse control unit 26 , and a voltage output unit 27 . . When AC power is supplied, the shock wave voltage generator 21 may convert the high voltage into a DC high voltage, then charge and discharge the high voltage to provide a high voltage pulse. At this time, it is possible to prevent unnecessary energy from parasitic in the high voltage output pulse output through the piezo handpiece 31 by intermitting the time (ie, pulse width) at which the high voltage in the form of a discharged pulse is outputted or by controlling the switching time. can That is, the shock wave voltage generator 21 may control the output pulse of the high voltage to be output in a shorter time than the discharge time. When the high voltage output pulse is discharged, the shock wave voltage generator 21 may block a pulse longer than the first control signal S1 for controlling the discharge or may block output of a voltage lower than a certain level.

The transformer 22 boosts the AC power (FIG. 3(A)) to a high voltage through the secondary winding to output it. The high voltage may be, for example, 5K volts or more. At this time, an AC-controlled waveform by a signal output from the controller 11 (FIG. 3B) may be applied to the transformer 22 .

The rectifier 23 rectifies the input high voltage and outputs a DC voltage. The DC voltage output from the rectifying unit 23 is charged by the charging/discharging unit 24 ( FIG. 3C ), and the discharging control unit 25 is a high-voltage DC voltage charged by the charging/discharging unit 24 . It is turned on so as to be discharged by the first control signal S1 of the control unit 11 . The high voltage discharged by the charging/discharging unit 24 is transmitted to the piezo handpiece 31 by the voltage output unit 27 . At this time, the pulse control unit 26 is turned on by the second control signal S2 of the control unit 11 for the high-voltage discharge voltage applied to the voltage output unit 27 , after a predetermined time or the first control A voltage (ie, a parasitic voltage) input after the signal S1 may be discharged.

The high voltage input to the piezo handpiece 31 may be output with a pulse width shorter than the discharge time of the charging/discharging unit 24 . The shock wave output through the piezo handpiece 31 has a width (Ta, or time) operated by the first control signal S1 or a high voltage before the second control signal S2 is applied in the form of a pulse. can be output. Accordingly, it is possible to prevent the high voltage from being output for a long period of time by the discharge time of the charging/discharging unit 24 through the piezo handpiece 31, thereby preventing unnecessary energy from being output. The control unit 11 can control the shock wave output through the voltage output unit 27 due to the discharge time delayed by the charging/discharging unit 24 with the pulse control unit 26 to operate within a clearer section. have.

The detailed configuration of the shock wave voltage generator 21 will be referred to below.

Referring to FIG. 2 , the transformer 22 induces a boosted voltage to the secondary winding when AC power (FIG. 3A) is supplied to the primary winding, and the boosted voltage is applied to the rectifying unit 23 It can be converted into DC voltage through the diodes D1, D2, D3, and D4. Here, the first resistor R1 may be connected between the second end of the secondary winding of the transformer 22 and the second and fourth diodes D2 and D4.

The cathode of the first diode D1 and the cathode of the second diode D2 of the rectifier 23 are connected to one end of the secondary winding of the transformer 22 and the other end of the second resistor R2, , the anode of the second diode D2 and the anode of the fourth diode D4 are connected to the other end of the secondary winding of the transformer 22 and connected to one end of the second resistor R2.

The charging/discharging unit 24 receives a high-voltage DC voltage through a fifth diode D5 having a cathode connected to one end of the second resistor R2 and one end of the third resistor R3, and a first capacitor C1. to be charged (FIG. 3(C)). The capacitor C1 has one end connected between the other end of the fifth diode D5 and the third resistor R3 and the other end of the voltage output unit 27 . The first capacitor C1 discharges the charged high voltage according to the operation of the discharge controller 25 .

The discharge control unit 25 may include a first switch layer element Qa, a first transformer T1, and a plurality of first thyristors Q1-Q2. In the discharge controller 25 , the first switching element Qa is turned on by the first control signal S1 of the controller 11 ( FIG. 3D ), and the first switching element Qa is turned on. The voltage supplied to the primary winding of the first transformer T1 is converted into a gate voltage in each of the plurality of secondary windings by the turn-on of the ? The first switching element Qa may be implemented as an N-channel MOSFET, connected to the other end of the primary winding of the first transformer T1, and one end of the primary winding of the first transformer T1. voltage Vcc may be supplied through resistors R7 and R8, and a second capacitor C2 is connected between the other end of the resistor R7 and the ground terminal GND.

The voltages induced to each of the secondary windings of the first transformer T1 may be respectively applied as gate voltages of the plurality of first thyristors Q1-Q2. Each of the secondary windings of the first transformer T1 may be connected to respective gate terminals and anode terminals of the first thyristors Q1-Q2. When a voltage is induced in each of the secondary windings, each of the plurality of first thyristors Q1-Q2 may be simultaneously conductive. Five or more of the plurality of first thyristors Q1-Q2, for example, 8 to 15, may be connected in series. One end of the plurality of first thyristors (Q1-Q2) is connected to one end of the first capacitor (C1), and the charging voltage of the first capacitor (C1) is the plurality of first thyristors (Q1-Q2) discharged through Resistors R4 and R5 are respectively connected to both ends of each of the plurality of first thyristors Q1-Q2 to protect a circuit, and a gate terminal of each of the first thyristors Q1-Q2 has an anode They are respectively connected through the primary and secondary windings.

The voltage output unit 27 has at least two resistors Ra and Rb, and the voltage of the output terminal of the discharge controller 25 and the pulse controller 26 is at a node N1 between the resistors Ra and Rb. tiers can be connected. The node N1 may be connected to the other end of the output-side resistor R5 of the discharge controller 25 and the anode terminal of the output-side first thyristor Q1-Q2. The node N1 may be connected to the cathode terminal of the second thyristor Q3-Q4 through one end of the resistor R16 of the pulse controller 26 .

A piezo handpiece 31 is connected to the output terminal of the voltage output unit 27, so that a shock wave is generated through the piezo handpiece 31 by the voltage applied to the node N1 of the voltage output unit 27 and can be output. The voltage applied to the node N1 of the voltage output unit 27 is applied for a short pulse width Tc or a high voltage pulse S3 as shown in FIG. 4A . Here, the pulse width Tc may be 3 μs or less, for example, 1.5 μs to 2.5 μs, and the times Ta and Tb of the first control signal S1 and the second control signal S2 and may be the same. Here, as shown in FIG. 4(B), when a voltage having a discharge time (Tc1>Tc) of the charging/discharging unit 24 is applied to the conventional high voltage pulse S31, it is stretched or delayed by the discharge time Tc1. This happens. When such a stretched or delayed high voltage is output, there is a problem in that an inconsistent voltage is output in the form of a shock wave, and unnecessary energy is applied to the human body.

In this case, the pulse controller 26 may include a second switching element Qb, a second transformer T2, and a plurality of second thyristors Q3-Q4. The pulse control unit 26 operates in response to the second control signal S2 of the control unit 11, and may intermittently control the high voltage pulse of the voltage output unit 27 or adjust the high voltage pulse width or output time. . That is, it is possible to block the parasitic current discharged from the first capacitor C1.

In the second switching element Qb, the second switching element Qb is turned on by the second control signal S2 of the control unit 11, and the second switching element Qb is turned on. The voltage supplied to the primary winding of the second transformer T2 is converted to a plurality of secondary windings and induced. The second switching element Qb may be implemented as an N-channel MOSFET, connected to the other end of the primary winding of the second transformer T2, and one end of the primary winding of the second transformer T2. A voltage Vcc may be supplied through the resistors R12 and R13, and a third capacitor C3 is connected between the other end of the resistor R12 and the ground terminal.

The voltages induced to each of the plurality of secondary windings of the second transformer T2 may be respectively applied as gate voltages of the plurality of second thyristors Q3-Q4. Each of the secondary windings of the second transformer T2 may be connected to each gate terminal and an anode terminal of the second thyristor Q3-Q4, respectively. When a voltage is induced in each of the secondary windings, each of the plurality of second thyristors Q3-Q4 may be simultaneously conductive. Five or more of the plurality of second thyristors Q3-Q4, for example, 8 to 15, may be connected in series. The number of the second thyristors Q3-Q4 may be the same as the number of the first thyristors Q1-Q2. The number of these first and second thyristors Q1-Q2, Q3-Q4 depends on the voltage applied to the capacitor C1 of the charging/discharging unit 24 or the voltage applied to the node N1 of the voltage output unit 27. may vary.

The first and second thyristors (Q1-Q2, Q3-Q4) may be silicon controlled rectifiers, for example, LASCR (Light Activated Thyristor), RCT (Reverse Conducting Thyristor), CATT (Gate Assisted Turn-). off thyristor), a gate turn-off thyristor (GTO), an asymmetric thyristor (ASCR), and a MOS controlled thyristor (MCT).

One end of the plurality of second thyristors Q3-Q4 may be connected to the node N1 of the voltage output unit 27 and the anode terminal of the last first thyristor Q2 through the resistor R6. Resistors R14 and R15 are respectively connected to both ends of each of the plurality of second thyristors Q3-Q4 to protect the circuit, and the gate terminal of each of the second thyristors Q3-Q4 is at They are respectively connected through the node end and the secondary side winding. And, the anode end of the second thyristor (Q3-Q4) may be connected to the other end of the first capacitor (C1) to be grounded in a positive polarity (+).

Here, the control unit (11 in FIG. 1 ) outputs a first control signal S1 and then outputs a second control signal S2, wherein the first and second control signals S1 and S2 are output. The pulse width or time difference may be set as much as the output width or time Ta of the first control signal S1. Accordingly, when the charging voltage of the first capacitor C1 is discharged by the operation of the discharge control unit 25, the pulse control unit 26 is operated to discharge the voltage parasitic to the high voltage after a predetermined time Ta. can

When the second switching element Qb is operated, the plurality of second thyrists Q3-Q4 is conducted. At this time, the remaining voltage except for the high voltage pulse S4 output through the voltage output unit 27 flows to the ground terminal. That is, the high voltage pulse synchronized with the first control signal S1 is output through the voltage output unit 27 for a predetermined time (Ta, FIG. 3 ), and the second control signal (S2) The voltage synchronized with the start time of S2) is not output. In (C) (D) of FIG. 3 , the first and second control signals S1 and S2 are output for a predetermined time Ta and Tb with a time difference, and the first thyristors Q1-Q2 are A conductive state may be maintained by the first control signal S1, and the second thyristors Q3-Q4 may be maintained in a conductive state by the second control signal S2.

Accordingly, a high voltage pulse is output to the voltage output unit 27 , and a shock wave is generated in the piezo handpiece 31 by the high voltage pulse S4 ( FIG. 5A ). In this case, the shock wave may be output as a pulse S4 of high voltage that comes before the start time of the second control signal S2. The time Td at which the shock wave is output may be the same as the output time of the first and second control signals S1 and S2. If, as shown in FIG. 4B , when the conventionally discharged high voltage pulse S31 is output through the voltage output unit 27 , as shown in FIG. 5B , the shock wave It is output as a pulse S41, which has a problem in that a shock wave having a different voltage by the time Td2 due to the parasitic current is unnecessarily output. Accordingly, by blocking the parasitic current of the first capacitor C1 input to the voltage output unit 27 by the pulse controller 26 , it is possible to block the problem of unnecessary energy being applied to the human body. Therefore, it is possible to improve the reliability of the extracorporeal shock wave generator and a medical device having the same.

6 and 7 are examples of a perspective view and a front view illustrating a medical device having an extracorporeal shock wave generator according to an embodiment of the present invention.

6 and 7 , the medical device is provided with a piezo handpiece 101 and a pneumatic handpiece 103 , and the user can select a treatment mode or adjust the treatment intensity through the display unit 102 . Here, the piezo elements of the piezo handpiece 101 are precisely arranged so that each generated pressure pulse can be focused on a specific point. It generates and outputs a shock wave at the focal point through the precise focus of this pulse. By applying shock wave stimulation to body parts using the shock wave generated using this extracorporeal shock wave generator, it relieves pain in joints such as plantar fasciitis, tennis elbow, Achilles tendon, shoulder, elbow, and ankle, and at the same time, By awakening the healing process, it has the effect of effectively treating chronic pain syndrome in the musculoskeletal system.

The above detailed description should not be construed as restrictive in all respects and should be considered as illustrative. The scope of the embodiments should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the embodiments are included in the scope of the embodiments.

11: Control
12: input
13: display unit
21: shock wave voltage generator
22: trans part
23: rectification unit
24: charge/discharge unit
25: discharge control unit
26: pulse control unit
27: voltage output unit
31: piezo handpiece
T1, T2: Transformers
Q1-Q2, Q3-Q4: Thyristor
C1: first capacitor
Qa, Qb: switching element

Claims (7)

a control unit 11 providing first and second control signals;
a transformer 22 for boosting the AC power to a high voltage;
a rectifying unit 23 for rectifying the high voltage boosted from the transformer unit;
a charging/discharging unit 24 for charging or discharging the rectified high voltage;
a discharging control unit 25 operating according to the first control signal to discharge the high voltage charged in the charging/discharging unit;
a voltage output unit 27 for outputting the discharged high voltage as a pulse of high voltage to the piezo handpiece; and
and a pulse controller (26) for discharging the high voltage discharged from the charging/discharging unit by the second control signal output after the first control signal. According to claim 1,
The time difference between the first control signal and the second control signal is a pulse width of the first signal signal. According to claim 1,
The pulse of the high voltage is equal to the pulse width of the first control signal,
The pulse width is output in a range of 1.5 μs to 2.5 μs, an extracorporeal shock wave generator. According to claim 1,
The discharge control unit,
a first switching element turned on by the first control signal;
a first transformer having a plurality of second windings for converting the voltage of the primary winding input by the first switching element into a gate voltage to the secondary winding;
A gate terminal is connected from each of the secondary windings of the first transformer, and a plurality of first thyristors connected in series are conducted by a voltage supplied to the gate terminal. 5. The method of claim 4,
The pulse control unit,
a second switching element turned on by the second control signal;
a second transformer having a plurality of second windings for converting the voltage of the primary winding input by the second switching element into a gate voltage to the secondary winding;
A gate terminal is connected from each of the secondary windings of the second transformer, and a plurality of second thyristors connected in series are conducted by a voltage supplied to the gate terminal. 6. The method of claim 5,
The output-side anode end of the plurality of first thyrists and the input-side cathode end of the plurality of second thyrists are connected to the voltage output unit,
The number of the second thyristors is the same as the number of the first thyristors, extracorporeal shock wave generating device. A medical device having an extracorporeal shock wave generator according to any one of claims 1 to 6.

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