(19) United States
`(12) Patent Application Publication (10) Pub. No.: US 2006/0187607 A1
`(43) Pub. Date:
`Aug. 24, 2006
`MO
`
`US 2006O1876O7A1
`
`(54) APPARATUS AND METHOD FOR CREATING
`PULSE MAGNETIC STIMULATION HAVING
`MODULATION FUNCTION
`
`(76) Inventor: Seung-Kee Mo, Seoul (KR)
`Correspondence Address:
`FINNEGAN, HENDERSON, FARABOW,
`GARRETT & DUNNER
`LLP
`901 NEW YORK AVENUE, NW
`WASHINGTON, DC 20001-4413 (US)
`(21) Appl. No.:
`10/551,418
`(22) PCT Filed:
`May 27, 2003
`(86). PCT No.:
`PCT/KRO3AO1034
`(30)
`Foreign Application Priority Data
`
`Mar. 31, 2003 (KR)............................ 10-2003-0O2O084
`
`Publication Classification
`
`(51) Int. Cl.
`HIH 4700
`
`(2006.01)
`
`(52) U.S. Cl. .............................................................. 361A143
`
`(57)
`
`ABSTRACT
`
`An apparatus for creating pulse magnetic stimulation, hav
`ing a modulation function, according to the present inven
`tion, comprises: a driving Voltage Supplying section for
`converting AC Voltage input from a Voltage source into DC
`Voltage having a predetermined magnitude; a capacitor
`section for accumulating electric charge in accordance with
`the DC voltage; an input switch section for controlling the
`accumulation of electric charge in the capacitor section; a
`coil for generating magnetic flux in accordance with current
`generated by both-end Voltage corresponding to the electric
`charge accumulated in the capacitor section; an output
`Switch section for controlling discharge of the electric
`charge accumulated in the capacitor section through the coil;
`and a shunt Switch section for lowering magnetic energy
`stored in the coil and Voltage stored in the capacitor section
`into a ground level to obtain a pulse magnetic field. In this
`pulse-magnetic-stimulation creating apparatus having a
`modulation function according to the present invention, it is
`possible to efficiently transfer energy on the basis of current
`compliance of a patient and impedance of biologic tissue for
`therapeutic applications.
`
`185
`
`Unit
`
`Control Unit
`
`Voltage inpu
`Section
`
`Rectifying
`Section
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`Filter ing
`Section
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`POWe monitor-75
`
`Magnet COil
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`LUMENIS EX1067
`Page 1
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`Patent Application Publication Aug. 24, 2006 Sheet 1 of 12
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`US 2006/0187.607 A1
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`ZT ZHOS
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`| 80S
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`Patent Application Publication Aug. 24, 2006 Sheet 2 of 12
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`US 2006/01876O7 A1
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`FG. 2A
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`| |
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`|
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`|? ?un |01\u00
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`Patent Application Publication Aug. 24, 2006 Sheet 3 of 12
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`US 2006/0187.607 A1
`
`FG. 2B
`
`Magnet Coil
`
`(Protective ea.
`
`Grip
`
`
`
`Main body
`
`Lead line
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`LUMENIS EX1067
`Page 4
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`Patent Application Publication Aug. 24, 2006 Sheet 4 of 12
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`US 2006/0187.607 A1
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`F.G. 3
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`145
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`155
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`210b 2 On
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`Input Switch
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`150
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`LUMENIS EX1067
`Page 5
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`Patent Application Publication Aug. 24, 2006 Sheet 5 of 12
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`US 2006/0187.607 A1
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`FG. 4A
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`LUMENIS EX1067
`Page 6
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`Patent Application Publication Aug. 24, 2006 Sheet 6 of 12
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`US 2006/01876O7 A1
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`FG. 4B
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`
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`Magnet Coil
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`Magnetic flux focusing unit
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`LUMENIS EX1067
`Page 7
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`Patent Application Publication Aug. 24, 2006 Sheet 7 of 12
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`US 2006/01876O7 A1
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`FG. 4C
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`Spaced distance
`
`Protective
`Magnet coil, merber
`Coolant
`
`
`
`Regulator
`
`
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`Magnetic flux focusing unit
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`Stratiform/
`iron Core
`
`s.S.
`Magnetic flux
`focusing unit
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`
`
`Grip
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`
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`Grip
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`Lead line
`s
`hose -
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`Lead
`line
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`LUMENIS EX1067
`Page 8
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`Patent Application Publication Aug. 24, 2006 Sheet 8 of 12
`F. G. 5
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`US 2006/0187.607 A1
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`Main power ine
`
`
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`Ring-shaped
`ferrite
`
`
`
`
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`Control unit
`(180)
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`LUMENIS EX1067
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`US 2006/0187607 A1
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`Patent Application Publication Aug. 24, 2006 Sheet 9 of 12
`FIG. 6A
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`~~----||--------------|-09||
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`019
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`Page 10
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`Patent Application Publication Aug. 24, 2006 Sheet 10 of 12
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`US 2006/0187.607 A1
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`F.G. 6B
`
`Stimulation
`ramp-up
`
`Stimulation
`Maintenance
`
`Stimulation
`ramp-down
`
`tl max-------- 2-------------------- --
`x 1/2 ----- (
`x1/6
`
`Y 1.
`
`\
`Y
`- max H------- S.---V-----V-----V-----V-
`
`N
`
`w N
`
`N
`-
`
`-y
`
`Time t (sec
`
`!---
`---
`Pulse On Pulse Off
`
`Burst On
`
`Burst Off
`
`LUMENIS EX1067
`Page 11
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`Patent Application Publication Aug. 24, 2006 Sheet 11 of 12
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`US 2006/0187.607 A1
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`FG. 7A
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`LUMENIS EX1067
`Page 12
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`Patent Application Publication Aug. 24, 2006 Sheet 12 of 12
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`US 2006/0187.607 A1
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`F.G. 7B
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`() () ()() () ()() () ()() () ()() () ()
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`LUMENIS EX1067
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`US 2006/01876O7 A1
`
`Aug. 24, 2006
`
`APPARATUS AND METHOD FOR CREATING
`PULSE MAGNETIC STIMULATION HAVING
`MODULATION FUNCTION
`
`BACKGROUND OF THE INVENTION
`0001) 1. Field of the Invention
`0002 The present invention relates to an apparatus and
`method for creating pulse magnetic stimulation with a
`modulation function, and specifically to an apparatus and
`method for creating pulse magnetic stimulation with a
`modulation function, capable of non-invasively stimulating
`a human body such as nerves, muscles, bones, blood vessels,
`etc. for therapeutic applications using a high-speed external
`time-varying magnetic field.
`0003 2. Description of the Related Art
`0004 The electromagnetic induction law, in which elec
`tricity can be converted into magnetism or magnetism can be
`converted into electricity, has been widely used in power
`generators, transformers or the like. In addition, methods of
`medical treatment using Such electromagnetic induction law
`have been developed continuously, and in recent, the elec
`tromagnetic induction law has been widely used up to
`neuromuscular treatments.
`0005. In general, stimulation methods for treating a neu
`romuscular system of a human body can be classified into an
`electrical stimulation method and a magnetic stimulation
`method.
`0006 The electrical stimulation method is a method in
`which stimulation is created by attaching pessary-shaped
`electrodes or patch-shaped electrodes to a human body and
`then allowing current to flow therein. On the other hand, the
`magnetic stimulation method is a method in which stimu
`lation is created by inducing magnetic energy into a skin or
`a body system to generate eddy current, the magnetic energy
`being generated by discharging electric energy stored in a
`capacitor to a magnet coil for generating an external time
`varying magnetic field.
`0007 Basically, the principle of generating magnetic
`stimulation falls within a range of Faraday's Law of elec
`tromagnetic induction in which when flux did linking with a
`circuit varies, an electromotive force e proportional to a ratio
`at which the flux is decreased is induced into the circuit. A
`direction of the induced current flowing in the circuit due to
`the electromagnetic induction is against variation in linkage
`flux of the circuit in accordance with Lentz's Law.
`0008 Such electromagnetic induction law is used in a
`variety of types for the therapeutic purposes of a human
`body, and hereinafter a case that the electromagnetic induc
`tion law applies to an apparatus for treating urinary incon
`tinence as one type will be described with reference to FIG.
`1.
`0009 FIG. 1 is a block diagram illustrating a conven
`tional apparatus for treating urinary incontinence.
`0010 Referring to FIG. 1, a drive circuit of the conven
`tional apparatus for treating urinary incontinence comprises
`a power Supply and charging section 10, a transferring
`section 20, a discharging section 30 and a stimulation coil
`40.
`
`0011. The power supply and charging section 10 per
`forms a function of boosting an input voltage into a high
`Voltage.
`0012. The transferring section 20 comprises switching
`elements SCR1, SCR2, a pumping inductor L1, a current
`control inductor L2 and a transfer capacitor C1 to transfer
`the Voltage Supplied from the power Supply and charging
`section 10.
`0013 The discharging section 30 performs a function of
`storing and discharging the Voltage Supplied from the trans
`ferring section 20, and current flows in the stimulation coil
`40 due to discharge of the discharging section 30.
`0014. In the drive circuit of this conventional apparatus
`for treating urinary incontinence, a Voltage from a high
`Voltage generating section (not shown) is stored in a charg
`ing capacitor (not shown) of the power Supply and charging
`section 10, and when the switching element SCR1 of the
`transferring section 20 is Switched on, the charge accumu
`lated in the charging capacitor of the power Supply and
`charging section 10 is accumulated the transfer capacitor C1
`of the transferring section 20 through the pumping inductor
`L1. Then, when the switching element SCR2 is switched on,
`the charge accumulated in the transfer capacitor C1 is
`Supplied to the discharging section 30 through the current
`control inductor L2. By repeating Such processes multiple
`times, the necessary electric charge is Supplied from the
`transferring section 20 to a discharging capacitor C2 of the
`discharging section 30. The discharging capacitor C2 of the
`discharging section 30 keeps accumulating the charge from
`the transferring section 20, and when a discharging Switch
`SCR3 is switched on, the discharging capacitor C2 dis
`charges the charge at one time. Then, current flows in the
`stimulation coil 40 due to the discharged charge.
`0015. However, the drive circuit of the conventional
`apparatus for treating urinary incontinence has some draw
`backs in that i) very high Voltage exceeding a dielectric
`strength of a general Switch is generated at both ends of the
`Switch in discharging, ii) the unreasonable transferring sec
`tion 20 is provided, iii) the system is complicated due to the
`addition of the transferring section 20, iv) production cost is
`additionally increased, and V) operation sequences thereof
`are complicated. Further, the conventional apparatus is dis
`advantages in that the inductance of the stimulation coil 40
`is not considered.
`0016 A variety of related arts exist in addition to the
`aforementioned conventional art, but since a human body is
`not a conductive coil as a necessary condition for accom
`plishing the therapeutic purpose of body stimulation accord
`ing to the conventional art, only a simple construction of
`electromagnetic induction apparatus cannot accomplish the
`therapeutic purpose.
`0017. The conventional art has additional problems that
`an optimal system for obtaining a desired induced Voltage
`cannot only be constructed, but also characteristics of Switch
`circuits are not considered.
`
`SUMMARY OF THE INVENTION
`0018. Accordingly, it is an object of the present invention
`to provide an apparatus and method for creating pulse
`magnetic stimulation with a modulation function, in which
`
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`Page 14
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`US 2006/01876O7 A1
`
`Aug. 24, 2006
`
`it is possible to efficiently transfer energy on the basis of
`current compliance of a patient and impedance of a biologic
`tissue.
`0019. It is a further object of the present invention to
`provide an apparatus and method for creating pulse mag
`netic stimulation with a modulation function, in which
`separate means for storage into a high Voltage or various
`auxiliary means Such as a pumping coil or a current restric
`tion coil are not required as necessary elements when a
`magnetic stimulation apparatus is used for the purpose of
`medical treatment.
`0020. It is a further object of the present invention to
`provide an apparatus and method for creating pulse mag
`netic stimulation with a modulation function, in which
`various modulation methods such as ramp modulation,
`phase modulation, duration modulation, timing modulation,
`amplitude modulation, frequency modulation and duty
`modulation may be performed.
`0021 Additional object of the present invention is to
`provide a magnetic flux emitting unit which is a mobile type,
`not a fixed type, and which is incorporated into one body
`with or attachable to a magnetic flux focusing unit for
`focusing magnetic flux generated from a coil.
`0022. In order to accomplish the above objects, according
`to one aspect of the present invention, an apparatus for
`creating pulse magnetic stimulation, in which pulse current
`is generated to create magnetic flux, is provided, the appa
`ratus comprising: a driving Voltage Supplying section for
`receiving AC voltage from a Voltage source, converting the
`received AC voltage into DC voltage having a predeter
`mined magnitude, and then outputting the DC voltage; a
`capacitor section for accumulating electric charge in accor
`dance with the DC voltage; an input switch section provided
`between the driving Voltage Supplying section and the
`capacitor section, for controlling the accumulation of elec
`tric charge in the capacitor section; a coil connected in series
`to the capacitor section, for generating magnetic flux in
`accordance with current generated by both-end Voltage
`corresponding to the electric charge accumulated in the
`capacitor section; an output Switch section provided between
`the capacitor section and the coil, for controlling discharge
`of the electric charge accumulated in the capacitor section
`through the coil; and a shunt Switch section connected in
`parallel between the coil and the output switch section, for
`lowering magnetic energy stored in the coil and Voltage
`stored in the capacitor section into a ground level to obtain
`a pulse magnetic field.
`0023 The driving voltage supplying section may com
`prise: a variable regulator for converting the AC voltage
`Supplied from the Voltage source into an AC voltage speci
`fied by a control section; a transformer for boosting the AC
`voltage outputted from the variable regulator into an AC
`Voltage having a magnitude corresponding to a predeter
`mined transformation ratio; and a rectifying section for
`converting the AC voltage boosted by the transformer into
`the DC voltage. In addition, the variable regulator can adjust
`a magnitude of the output AC voltage.
`0024. The driving voltage supplying section may further
`comprise a filtering section for Smoothing the DC voltage
`full-wave rectified by the rectifying section.
`0025) Furthermore, in the apparatus for creating pulse
`magnetic stimulation according to the present invention,
`
`when the magnetic energy and the Voltage are lowered into
`the ground level in a state that the shunt Switch section is
`switched on, the output switch section may be switched off.
`0026 Furthermore, in the apparatus for creating pulse
`magnetic stimulation according to the present invention,
`when the electric charge has been completely accumulated
`in the capacitor section, the input Switch section may be
`switched off and the output switch section may be switched
`on. In addition, it is determined by means of capacitance of
`the capacitor section whether the electric charge has been
`completely accumulated in the capacitor section or not.
`0027. The apparatus for creating pulse magnetic stimu
`lation according to the present invention may further com
`prise a power monitoring section for calculating a magnitude
`of the current using the magnetic flux generated due to the
`current flowing through the coil to detect an error of a large
`power signal.
`0028. The capacitor section of the apparatus for creating
`pulse magnetic stimulation according to the present inven
`tion may be connected in parallel to an additional capacitor
`group, the additional capacitor group may comprise one or
`more additional capacitor sections connected in parallel,
`respectively, and each of the additional capacitor sections
`may comprise one additional capacitor and one Switching
`element connected in series.
`0029. On or off state of the switching element of the
`additional capacitor section may be controlled to change a
`value of capacitance, and only when the Switching element
`is Switched on, the capacitor section and the additional
`capacitor section may be connected in parallel one another.
`0030) Furthermore, in the apparatus for creating pulse
`magnetic stimulation according to the present invention,
`when the input Switch section and the shunt Switch section
`are switched off and the output switch section is switched
`on, the capacitor section and the coil may constitute an RLC
`serial resonant circuit, and each parameter value of the RLC
`serial resonant circuit may satisfy an under-damping condi
`tion.
`Furthermore, the output switch section of the appa
`0031
`ratus for creating pulse magnetic stimulation according to
`the present invention is switched on and off every one or a
`half period of the RLC serial resonant circuit, and a period
`in which the output switch section is switched on and off
`may be preferably set to be less than 1 khz and normally set
`to be less than 300 HZ.
`0032. A waveform of the pulse current may be at least
`one of a sine wave, a square wave and a triangle wave.
`0033. Furthermore, the input switch section, the output
`Switch section and the shunt Switch section of the apparatus
`for creating pulse magnetic stimulation according to the
`present invention may be any one of a relay, a thyristor and
`an Insulated Gate Bipolar Transistor (IGBT).
`0034. According to another preferred embodiment of the
`present invention, an apparatus for creating pulse magnetic
`stimulation, in which pulse current is generated to create
`magnetic flux, the apparatus having a resonant circuit com
`prising a coil, a resistor and a capacitor, is provided, the
`apparatus further comprising: a driving Voltage Supplying
`section connected in parallel to the capacitor, for accumu
`lating electric charge in the capacitor, by receiving AC
`
`LUMENIS EX1067
`Page 15
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`US 2006/01876O7 A1
`
`Aug. 24, 2006
`
`Voltage from a Voltage source, converting the received AC
`Voltage into DC Voltage having a predetermined magnitude,
`and then outputting the DC voltage; an input Switch section
`provided between the driving Voltage Supplying section and
`the capacitor, for allowing the electric charge to be accu
`mulated in the capacitor only when the input Switch section
`is switched on; an output switch section provided between
`the capacitor and the coil, for allowing the electric charge
`accumulated in the capacitor to be discharged through the
`coil only when the output Switch section is Switched on; and
`a shunt switch section connected in parallel between the coil
`and the output Switch section, for lowering magnetic energy
`stored in the coil and Voltage stored in the capacitor into a
`ground level to obtain a pulse magnetic field.
`0035) In addition, the driving voltage supplying section
`may comprise: a variable regulator for converting the AC
`Voltage Supplied from the Voltage source into an AC voltage
`specified by a control section; a transformer for boosting the
`AC voltage output from the variable regulator into an AC
`Voltage having a magnitude corresponding to a predeter
`mined transformation ratio; and a rectifying section for
`converting the AC voltage boosted by the transformer into
`the DC voltage.
`0036) The capacitor may be connected in parallel to an
`additional capacitor group, the additional capacitor group
`may comprise one or more additional capacitor sections
`connected in parallel, respectively, and each of the addi
`tional capacitor sections may comprise one additional
`capacitor and one Switching element connected in series.
`0037 According to another aspect of the present inven
`tion, a method of Supplying a pulse current to generate
`magnetic stimulation is provided, the method comprising: a
`step of inputting an operation start instruction to an appa
`ratus for creating pulse magnetic stimulation; (a) a step in
`which a power Supplying section receives an AC voltage
`from a Voltage source and converts the received AC voltage
`into an output AC voltage having a predetermined magni
`tude; (b) a step in which a rectifying section converts the
`converted AC voltage into a DC voltage; (c) a step in which
`when an input Switch section is Switched on, a capacitor
`section accumulates electric charge corresponding to the DC
`Voltage; (d) a step of Switching off the input Switch section
`and Switching on an output Switch section, when the capaci
`tor section has completely accumulated the electric charge;
`(e) a step of allowing a current to flow in a coil, the current
`being generated due to a both-end Voltage corresponding to
`the electric charge accumulated in the capacitor section, (f)
`a step in which the coil generates magnetic flux on the basis
`of the current; (g) a step of Switching on a shunt Switch
`section after a predetermined period time: (h) a step of
`Switching off the output Switch section and Switching on the
`input Switch section, when magnetic energy stored in the
`coil and Voltage accumulated in the capacitor section is
`lowered into a ground level; and a step of repeating the steps
`(a) to (h) until an operation end instruction is input to the
`apparatus for creating pulse magnetic stimulation, or a
`predetermined burst on period expires. In addition, a system,
`an apparatus and a recording medium for enabling the above
`method of Supplying a pulse current to be executed are
`provided.
`0038. The method of supplying a pulse current according
`to the present invention may further comprise a step of
`
`determining a magnitude of Voltage to be stored in the
`capacitor section after carrying out the steps (a) to (h). In
`addition, the magnitude of Voltage to be stored in the
`capacitor section may be determined on the basis of a
`magnitude of an output AC voltage converted by a variable
`regulator of the power Supplying section.
`0039. Furthermore, the steps (a) to (d) may be carried out
`in a pulse off state where a current does not flow in the coil,
`and the steps (e) to (h) may be carried out in a pulse on State
`where a current flows in the coil.
`0040. Furthermore, the burst on period is a period that the
`pulse on state and the pulse off state are alternately repeated
`and thus an induced Voltage is generated to create a stimu
`lation, and the burst on period may comprise a stimulation
`ramp-up period, a stimulation maintenance period and a
`stimulation ramp-down period.
`0041. During the stimulation ramp-up period, a magni
`tude of the output AC voltage converted by the variable
`regulator of the power Supplying section becomes higher
`gradually, during the stimulation maintenance period, the
`magnitude of the output AC voltage of the power Supplying
`section is maintained constantly, and during the stimulation
`ramp-down period, the magnitude of the output AC voltage
`converted by the variable regulator of the power Supplying
`unit becomes lower gradually.
`0042. The apparatus for creating pulse magnetic stimu
`lation according to the present invention can vary a modu
`lation period corresponding to a period of the pulse on time
`and the pulse off time with varying the pulse off time.
`0043. Furthermore, the apparatus for creating pulse mag
`netic stimulation according to the present invention may
`include at least one of a ramp modulation, a phase modu
`lation, a duration modulation, a timing modulation, an
`amplitude modulation, a frequency modulation and a duty
`modulation.
`0044) Furthermore, the apparatus for creating pulse mag
`netic stimulation may include at least one chosen from a
`ramp modulation, a phase modulation, a duration modula
`tion, a timing modulation, an amplitude modulation, a
`frequency modulation and a duty modulation.
`0045 According to another preferred embodiment of the
`present invention, a magnetic flux emitting unit for exter
`nally emitting magnetic flux generated from a coil in a
`stimulation apparatus having a resonant circuit comprising
`the coil, a resistor and a capacitor, the apparatus generating
`a pulse current to create the magnetic flux, is provided, the
`unit comprising: the coil; a case having an insulating feature
`and also having a disk shape Surrounding the coil; a grip
`projected from a lower portion of the case; and a lead line
`coupled to the coil and penetrating through the case and the
`gr1p.
`0046) The coil of the magnetic flux emitting unit may be
`formed to be a single-layer Solenoid shape, and the case may
`have a plurality of air holes for cooling heat generated from
`the coil in an air cooling manner.
`0047. Furthermore, a magnetic flux focusing unit for
`focusing the magnetic flux generated from the coil on one
`point using a boundary condition of magnetic field may be
`coupled to the case of the magnetic flux emitting unit, and
`a coolant and a stratiform iron core of the magnetic flux
`focusing unit may be sealed.
`
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`Page 16
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`US 2006/01876O7 A1
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`Aug. 24, 2006
`
`0.048. In this case, the stratiform iron core of the magnetic
`flux focusing unit is disposed in parallel to the coil, the
`permeability of materials of the central stratiform iron core
`is larger than the permeability of material of the peripheral
`stratiform iron core, an end portion of the stratiform iron
`core from which the magnetic flux is emitted is formed to
`have a toy top shape, and the coolant is circulated through
`a hose connected to the magnetic flux focusing unit.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`0049. The aforementioned aspects and other features of
`the present invention will be explained in the following
`description, taken in conjunction with the accompanying
`drawings, wherein:
`0050 FIG. 1 is a block diagram illustrating a drive circuit
`of a conventional apparatus for treating urinary inconti
`nence,
`FIG. 2A is a block diagram of an apparatus for
`0051
`creating pulse magnetic stimulation according to one pre
`ferred embodiment of the present invention;
`0.052
`FIG. 2B shows an external appearance of the
`apparatus for creating pulse magnetic stimulation according
`to the one preferred embodiment of the present invention;
`0053 FIG. 3 is a circuit diagram illustrating a detailed
`configuration of an RLC serial resonant circuit of the
`apparatus for creating pulse magnetic stimulation according
`to the one preferred embodiment of the present invention;
`0054 FIG. 4A is a view illustrating an example of a
`magnet coil according to the one referred embodiment of the
`present invention;
`0.055
`FIG. 4B is a view illustrating a principle of focus
`ing magnetic flux:
`0056 FIG. 4C is a view exemplifying a configuration of
`a probe of the apparatus for creating pulse magnetic stimu
`lation according to the one preferred embodiment of the
`present invention;
`0057 FIG. 5 is a view exemplifying a method of cou
`pling an output monitor according to the one preferred
`embodiment of the present invention:
`0.058
`FIG. 6A is a circuit diagram illustrating in detail
`the apparatus for creating pulse magnetic stimulation
`according to the one preferred embodiment of the present
`invention;
`0059 FIG. 6B is a view illustrating an output modulation
`characteristic of the apparatus for creating pulse magnetic
`stimulation according to the one preferred embodiment of
`the present invention;
`0060 FIG. 7A is a block diagram of an apparatus for
`creating pulse magnetic stimulation according to another
`preferred embodiment of the present invention; and
`0061
`FIG. 7B is a circuit diagram illustrating in detail a
`square wave generating circuit according to the another
`preferred embodiment of the present invention.
`0062 (Reference Numerals)
`0063. 105: driving voltage supplying section
`0064. 110: voltage input section
`
`0065 120: high-voltage transformer
`0.066
`130: rectifier
`0067. 140: filtering section
`0068. 145: input switch
`0069 150: pulse capacitor
`0070) 155: output switch
`0.071) 160: shunt switch
`0072) 170: magnet coil
`0073) 175: power monitor
`0074 180: control unit
`0075) 185: peripheral unit
`0076) 510: variable regulator
`0077 710: square wave generating circuit
`
`DESCRIPTION OF THE PREFERRED
`EMBODIMENTS
`0078. The present invention relates to a pulse-magnetic
`stimulation creating apparatus having a modulation func
`tion, having a simpler circuit configuration compared to
`other conventional apparatuses, by connecting a shunt
`Switch to a magnet coil L in parallel in an RLC serial
`resonant circuit. The apparatus for creating pulse magnetic
`stimulation according to the present invention stimulates
`nerves, muscles, bones, blood vessels of a human body to
`effectively inject the stimulation energy into the human
`body. In addition, the apparatus for creating pulse magnetic
`stimulation according to the present invention provides a
`modulation function of varying the output power, thereby
`providing a variant mode (in which the energy injected into
`a human body is varied with time) of effectively transferring
`energy in the course of injecting the stimulation energy.
`0079 Now, preferred embodiments of the present inven
`tion will be described in detail with reference to the
`appended drawings.
`0080 FIG. 2A is a block diagram illustrating an appa
`ratus for creating pulse magnetic stimulation according to
`one preferred embodiment of the present invention, and
`FIG. 2B shows an external appearance of the apparatus for
`creating pulse magnetic stimulation according to the one
`preferred embodiment of the present invention.
`0081
`Referring to FIG. 2A, the apparatus for creating
`pulse magnetic stimulation comprises a driving Voltage
`Supplying section 105, an input Switch 145, a pulse capacitor
`150, an output switch 155, a shunt switch 160, a magnet coil
`170, a power monitor 175, a control unit 180 and a periph
`eral unit 185.
`0082 The driving voltage supplying section 105 com
`prises a Voltage input section 110, a high-voltage trans
`former 120, a rectifier 130 and a filtering section 140.
`0083. The voltage input section 110 serves for adjusting
`a secondary Voltage using a variable regulator. As the
`variable regulator included in the voltage input section 110.
`a variable transformer is a unit for converting input AC
`Voltage into a desired magnitude to form a new AC power
`Source, and may be provided in a primary side or a second
`
`LUMENIS EX1067
`Page 17
`
`

`

`US 2006/01876O7 A1
`
`Aug. 24, 2006
`
`ary side, but preferably in the secondary side. The variable
`regulator adjusts the secondary Voltage in accordance with
`output value information set by an operator or output value
`information received from the control unit 180. The appa
`ratus for creating pulse magnetic stimulation according to
`the present invention can continuously vary the amplitude of
`Voltage with respect to the same pulse width using the
`variable transformer. A reason that the apparatus for creating
`pulse magnetic stimulation according to the present inven
`tion may control the amplitude of Voltage prior to the
`primary side of the transformer 120 is to eliminate difficul
`ties in the control of the amplitude of Voltage and compli
`cation in circuits associated with extremely high level of
`signal posterior to the transformer 120.
`0084. The transformer 120 serves for boosting the output
`Voltage of the Voltage input section 110 into a high Voltage.
`For example, a 3 kV level transformer of which the input and
`output signals are AC voltage and the output Voltage to the
`input voltage is 200:1500V can be employed. A method of
`designing a transformer is as follows. The magnet coil 170
`is first designed in accordance with an induced Voltage
`desired by a user, and an L value of the magnet coil 170 and
`a desired current are established. After constituting an RLC
`serial resonant circuit, the pulse capacitor 150 satisfying an
`under-damping condition is then determined. When the
`pulse capacitor 150 is determined, the storage Voltage
`thereof is calculated, and the Voltage obtained by calculating
`the relevant storage voltage and efficiency of the rectifier
`130 and adding a compensating value thereto is the output
`voltage of the transformer 120. Then, using the current value
`flowing in lines, the capacitance of the transformer can be
`determined.
`0085. The rectifier 130 serves for converting the high AC
`voltage into a high DC voltage. That is, the rectifier 130
`carries out the full-wave rectification using a bridge recti
`fying diode to convert the AC voltage into the DC voltage.
`0.086 The filtering section 140 serves for smoothing a
`ripple voltage, since the DC voltage full-wave-rectified by
`the rectifier 130 has a ripple waveform having a continuous
`semi-period. That is, the filtering section 140 is connected to
`a ground terminal (-) and a power Supply terminal (+) at
`both ends of the bridge rectifying diode. For example, a