{12) lN'i‘ERNA’l‘lGN/XL APPLICATION FUDMSHED UNDER THE ‘ATENT (IOOE’ERATION TREATY (PCT)
`
`(1‘)) Work} intellectual Property
`Organization
`International Bureau
`
`{43) international Publication Date
`14 October ant (14.10.2994)
`
`
`
`PCT
`
`(10) international Publication Ntmlbct‘
`Wt) Ztlttrtittfimfifi At
`
`(51) international Patient Classificatioifl;
`
`A61N 1/953
`
`(81) Designated States (national): AE, AG, AL, AM, Al, AU,
`AZ, BA, BB, BG, BR, BY, BZ, CA, CH. CN, CO, CR. CU,
`
`(21) Enigmafimal Applicatm Numhm
`PCT/KRZUWMQWM
`
`.
`,.
`.
`(12) I t‘
`3.
`n emotional Filing Date“
`
`,\
`- ,3
`n
`. m,
`‘
`,
`27 May 4203 t_2z,0>.l.003,
`
`(25) Filing Language:
`
`.
`.
`_
`(26) Pumam“ I‘Mguagc:
`
`Korean
`
`.
`EnghSh
`
`(30) Priority Dam:
`10—22003—0020084
`
`3'1 March 2033 (31332003)
`
`KR
`
`(71) Applicant and
`(72) Inventor: MO, Seung~Koo [KR/KR}; Woonieong Bldg,
`Zol—l Y glue-dong, Seocho—gu, l37—l30 Seoul (KR).
`
`(74) Agent: LEE, Kyeongkan; 502 BYC Bldg, 64 8-1 Yeok--
`sam l—(long, Kangnam—ku, Seoul lSS—ORE (KR).
`
`c2. on, on DM, DZ, EC, EE, ES Fl, GB, GD, GE, on,
`GM, HR, HU, to, n), 1N, IS, 3E, KE, KG, KP, KZ, LC, LK,
`LR, lS LT, LU, LV, MA, MD, MG, MK, MN, MW, MX,
`
`MZ, NO, NZ, OM, PH, PL, 10",} RO, RU, SC, SD, SE, St},
`SK 8] Ti, TM, TN, {'1 ’l‘T, TZ. UA, UG, US, UZ, VC,
`VN, ‘1’U,ZA,ZM, zw.
`
`(84} Designated States (regional): ARIN) patent (GH, GM,
`KE, LS, M‘» I, ML, 51), SL, 32., ’12, UG, ZM, ZW),
`
`Eur.
`n patent (AM, AZ, BY. KG, KZ, MD, RU, T], TM),
`European patent (AT, BE, BG, CH, CY, CZ, DE, Dli, lill,
`ES E1, HR, on, GR, HU, 1E, rr, LU, MC, NL, in; no,
`SE, SI, SK TR), ()API patent (BF, EL CF, CG, CI, CM,
`GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
`
`Published:
`
`— with international search report
`
`For two-letter codes and other abbreviations, refizr to the "Gull/1'»-
`(mag Notes on Codes andAbc’vrm/mflam” appearing at the begin-
`Ming nfeach regular issue fifth? PCT Gazette.
`
`(54) Title: APPARATUS AND METHOD FOR CREAl‘lNG PULSE MAGNETIC STIMULATION HAVING MODULATION
`FUNCTION
`
`
`
`:l777773’77777777fih
`
`snum swi tchj
`
`
`(57} Abstract: An apparatus to creating pulse magnetic stimulation, having 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 D :voltage; an input switch
`section for controlling the accumulation oi'oiectric 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
`swi ch section for controlling discharge of the electric charge accumulated in the capacitor section through the coil; and a shunt
`t Wich section for lowering magnetic energy stored in the coil and voltage stored in the capacitor section into a ground level to obtai
`a pulse in agne tic field. ln tilifi puise-tnagnetiestirnt ation creating apparatus having a modulation function according to the present
`imentlon, it is possible to efficiently transfer energy on the basis of current coinpliantce \f a patient and iinpeclzuice of biologic tissue
`for therapeutic applications.
`
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`

`

`‘WO 2634/087255
`
`FCTI'KRZWB/GMGM
`
`APPARATUS AND METHOD FGR CREATING PULSE MAGNETIC
`
`STEMULATEQN EMVWG MGDHLATIGN FUNCTEGN
`
`BACKGRQUND OF THE INVENTEQN
`
`U!
`
`Lflfiifiififfilflfll’fiflfiflfl
`
`The present invention reiates to an apparatus and method for creating pulse
`
`magnetic stimuiation with a modulation function and specifically to an apparams and
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`method for creating pulse magnetic etimuiation with a moduiation function, oapabie of
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`m’muimiasiveiy stimulating a human body such as nerves? muse-1:339 bone-8,, 'biood vesseis,
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`etc. for therapeutic appiioations using a, high—speed external
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`timenvaiying magnetic
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`iieid.
`
`
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`The electromagnetic induction law, in wiiiczii electricity can be converted into
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`magnetism or magnetism can be converted inie electricity, has been Widely used in
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`power g{z‘iiei‘a’ters5 transformers or the like,
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`In addition, methods of medicei treatment
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`using such eieeiromagnefio induction law have been developed continuousiy; and in
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`reeent, ihe eieciromagneiic induction, Law has been widely used up to iiearomuseuiar
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`treatmentsu
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`In genera}, stimulation methods for treating a neuromuseuiar syatem of a human
`
`10
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`I-J C31
`
`20
`
`

`

`W'O 200410872575
`
`PCT/Km993/001034
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`body can be eiaesified into an eieetrieai stirnuiatien methed and a magnetic stimulation
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`method“
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`The eieetrieal stimuietioe method is a method in which stimuiatietr is created
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`by attaching peeearjyusheped eieetredes or patchehaped eieetredes: to a human body and
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`U1
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`then ailewirig current to flew therein”
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`011 the other hand, the magnetic stimulatien
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`metiied is a method in which stim'aiatien ie created by inducing magnetie energy irate a
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`skin or a bed}; system to generate eddy current, the magnetic energy being generated by
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`discharging eteetrie energy stored in a capaciter to a magnet eoii fer generating an
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`external time—varying magnetic field.
`
`a; O
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`Bas'eaiiyy the principle of generating magnetic stimulatieri faile within a range
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`or" Faratiay”e Law of eieetremegnetie induction in which when flux (12’ iinking with a
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`circuit varies, an electrometive force e propertierrai to a ratio at which the flux is
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`decreased is induced inte the circuit. A direction (if the induced current. firming in the
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`Circuit due to the electromagnetic iiiduetien is against variation in linkage flux et‘ the
`
`15
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`circuit in accordance with Lentz’s Law.
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`Seer electromagnetic induction iaw is used in a variety 0f types for the
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`therapeutic purposes of a human ‘i‘it‘idjy‘g and hereinafter a case that the electromagnetic
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`induction law applies to an apparatus for treating urinary incentinence as one type wi‘ii
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`be described with reference to Fig 1.
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`Fig.
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`3.
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`is a block diagram illustrating a certventienai apparatus for treating
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`EX)
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`

`

`W'O 2604/08725UH
`
`PCT/Km993/001034
`
`urinary incontinoncc.
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`Referring to Fig.1, a drive circuit of thc convontionai apparatus for treating
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`urinary incontinence. comprises a power supply and charging section 10, a transferring
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`section 20; a discharging section 30 and a stininiation coii 40,
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`U}
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`The powor supply and charging section 10 port‘ornis a. function of boosting an
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`input voltagc into a high voltage.
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`The transferring section 20 comprises switching oiorncnts SCRl, SCRZ, a
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`pumping inductor LL 3 current control inductor L2 and a transfer capacitor Cl to
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`transfer the voltage snppiicd from the powcr supply and charging section 10.
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`1.0
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`Tho discharging section 30 porfornis a function of storing and discharging the
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`voitagc snppiicd from the: transferring section 205 and current flows in the Stimulation
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`coil 40 doc to discharge of the discharging scction 30.
`
`in tho drive circuit of this conventional apparatus for
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`treating urinary
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`incontinence, a, voitagc from a high—voltage generating section (not shown) is stored in a
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`charging caoacitor (not shown) of the power supply and charging scction 10, and when
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`tho switching ciornent SCRl of the transferring section 20 is switched on, tho charge
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`accnrnniatcd in the charging capacitor of the power supply and charging section 10 is
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`accumulated the transfcr capacitor C1 of tho transferring scction 20 through the
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`pumping inductor L1. Then, Wilson the switching eiomcnt SCR‘Z is switched on, the
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`charge accumulated in the transfer capacitor (21 is supplied to tho discharging section ‘30
`
`

`

`W'O 2604/08725UH
`
`PCT/KmttiiEt/Ghiwéi
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`'hrough the current control inductor L2. By repeating such processes multiple times?
`
`the necessary electric charge is Stappiied from the transferring section 29 to a
`
`thecharging capacitor CZ of the ciischerging Section 30. The discharging capacitor C2
`
`of the diechergihg section 30 keeps. accumuiating the charge from the transferring
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`C11
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`section 20,
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`into when a discharging switch SCR3 he switched on;
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`the discharging
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`capacitor C2 discharges the charge at one time. Then, current. flows in the stimulation
`
`coil 40 due to the discharged charge.
`
`However, the drive circuit of the conventional apparatus for treating urinary
`
`incontinence has some drawbacks in that i) very high voitage exceeding a tiieiectric
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`Strength of a general switch is generated at both ends of the switch in discharging, ii) the
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`rthreasomhie transferring 3e “ti-on 20 it; provided; iii) the system is complicated due to
`
`the addition of the transferring section 207 iv) production cost is additionally increegedg
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`and V) operation sequences
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`thereof are ccmpiicateo.
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`Further,
`
`the conventional
`
`apparatus is disadvantages in that the inductance of: the Stimuietion coil 40 is not
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`0‘!
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`congidered.
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`A variety of related {EICS exist in addition to the aforementioned conventional art,
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`but since a human body is not a conductive coil
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`as. a necessary condition for
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`accomplishing the
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`therapeutic purpose of body stimuiatioh according to the
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`conventionai art, chi}; a simple construction of electromagnetic induction apparatus
`
`O
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`cannot accomplish the therapeutic purpose.
`
`,5;
`
`

`

`W'O 2604/08725UH
`
`PCT/KmtttB/Giiiwéi
`
`The conventional art has additional problems that an optimal system for
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`obtaining a desired induced voltage. cannot only be constructed, but also characteristics
`
`of switch circuits are not considered.
`
`5 SUMMY GE THE INVENTION
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`Accordingly, it is an object of the present invention to provide an apparatus and
`
`method for creating poise magnetic stimuiation with a niodnin'tion function, in which it
`
`is possibie to efficiently transfer energy on the basis of current compliance of a. patient
`
`and impedance of a bioiogie tissue.
`
`if)
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`It
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`is a further object of the present invention to provide an apparatus and
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`method for creating pulse magnetic stimulation with a modulation function: in which
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`separate means for storage into a high voltage or various anxiiinry means such as a
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`pumping eoii or a current restriction coil are not required as necessary elements when a
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`magnetic stimulation apparatus is used for the purpose of medical treatment.
`
`15
`
`it is a further object of the present
`
`invention to provide an apparatus and
`
`method for creating poise magnetic stimuiation with a modulation function, in which
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`various modulation methods such as ramp modulation, phase nototinistion2 duration
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`inoriniation, timing inoduiation, amplitude modulation, frequency modulation and duty
`
`modulation may be perfonneci.
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`20
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`Additional object of the present invention is to provide a magnetic flux emitting
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`

`

`W'O 2604/08725UH
`
`PCT/Kmtttl3/001034
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`unit which is a mobile type, not a fixed type, and which is incorporated into one body
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`with or attachable to a magnetic flux focusing unit for "focusing magnetic flux generated
`
`from a coil.
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`in order to accomplish the above objects, according to one aspect of the present
`
`5
`
`invention, an apparatus for creating pulse magnetic stimulation, in which pulse current
`
`is generated to create magnetic flux, is provided: the apparatus comprising: a driving
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`voltage supplying section for receiving AC voltage flflt’l‘l a. voltage source, converting
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`the received AC voltage into DC. voltage having a predetermined magnitude, and then
`
`outputting the DC voltage; a capacitor section for accumulating electric charge in
`
`10
`
`accordance with the DC voltage; an input switch section provided between the driving
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`voltage supplying nection and the capacitor section, for controlling the accumulation of
`
`electric charge in the capacitor section; a coil connected in settles to the capacitor section,
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`for generating magnetic flux in accordance with cuttent generated by hotlnentl voltage
`
`corresponding to the electric charge accumulated in the capacitor section; an output.
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`5:
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`switch section provided between the capacitor section and the coil, for controlling
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`diecharge of the electric charge accumulated in the capacitor section through the coil;
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`anti a shunt switch Section connected in parallel between the coil and the output switch
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`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.
`
`2G
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`The driving voltage supplying section may comptiee: a variable regulator for
`
`O")
`
`

`

`W'O 2604/08725UH
`
`PCT/KmtttB/Giiiifiéi
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`converting the AC voitage supplied from the voltage source into an AC voltage
`
`specified by a controi section; a transformer for boosting the AC voltage outnatted from
`
`the variahie regulator into an AC voitage having a magnitude corresponding to a
`
`predetermined transformation ratio; and a rectifying section for converting the AC
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`’5
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`voltage boosted by the transformer into the DC voitage,
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`in. addition,
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`the variahie
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`regulator can adjust a magnitude of the output AC voltage
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`The driving voitage supplying section may further comprise a filtering section
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`for smoothing the DC voltage futiwwave rectified by the rectifying section.
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`Furthermore, in the apparatus for creating poise magnetic stimulation according
`
`1-73
`
`to the present invention” when the magnetic energy and the voltage are towered into the
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`ground icvei in a state that the shunt switch section is switched on, the output switch.
`
`section may he switched off.
`
`Furthermore, in the apparatus for creating poise magnetic stimulation according
`
`to the present invention, when the electric charge has been completely accumulated in
`
`15
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`the capacitor section, the input switch section may he switched off and the output switch
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`section may he switched on.
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`In. addition5 it is determined by means of capacitance of
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`the capacitor section whether the electric charge has been compieteiy accumulated in
`
`the capacitor section or not.
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`The apparatus for creating poise magnetic stimulation according to the present
`
`20
`
`invention may further comprise a power monitoring section for calculating a magnitude
`
`\1
`
`

`

`W'O 2604/08725UH
`
`PCT/Kmt3ii3/0iiiii34
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`of the current using the magnetic flux generated tine to the current flowing through the
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`coii to detect an error of a large power signai.
`
`The capacitor section of the apparatus for creating poise magnetic stimulation
`
`according to the present
`
`invention may be connected in paraiiei
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`to an additiona‘i
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`5
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`canacitor group, the additional capacitor group may comprise one or more additional
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`capacitor sections connected in paraileiy resnectiveiy, and each of the additional
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`capacitor sections may comprise one additionai capacitor and one switching eiement
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`connected in series.
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`On or off state of the switching element of the additional capacitor section. may
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`it]
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`be controiied to change a veins of capacitance, and only when the switching element is
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`switched on, the capacitor section and the additional capacitor section may e connected
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`in paraiiei one another.
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`Furthermore, in the apparatus for creating puise magnetic stimuiation according
`
`to the present invention: when the input switch section and the shunt switch section are
`
`i5
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`switched off and, the output switch section is switched on, the capacitor section and the
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`coii may constitute an RLC seriai. resonant circuit, and each parameter value of the RLC
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`seriai resonant circuit may satisfy an under—damping condition.
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`Furthermore,
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`the output switch section of the apparatus for creating poise
`
`magnetic stimuiation according to the present invention is switched on and off every
`
`20
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`one or a half period of the RLC serial resonant circuit, and a period in which the output
`
`

`

`W'O 2604/08725UH
`
`PCT/Kmt3ll3/0illll34
`
`SWliCh section is switched on. and off may be preferably set to be less than llrllz and
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`normally set to be less than 300th.
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`A waveform of the pulse current may he at least one of a sine wave9 a square
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`wave and a triangle wave.
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`5
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`Furthermore, the input switch section, the output switch section and the shunt
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`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
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`Transistor {iGB’i‘}
`
`According to another preferred embodiment of the present
`
`invention, an
`
`10
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`apparatus for creating pulse magnetic stimulation, in which. pulse current is generated to
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`create magnetic flux, the apparatus having a resonant circuit comprising a coil, a resistor
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`and a capacitor,
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`is provided the apparatus further comprising: a driving voltage
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`supplying section connected in parallel. to the capacitor, tor accumulating electric charge
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`in the capacitor? by receiving AC voltage from a voltage scurce, converting the received
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`,...r (.31
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`AC voltage into DC voltage having a predetermined magnitude; and Hen outputting the
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`DC voltage; an input switch section provided between the driving voltage supplying
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`section and the capacitor, for allowing the electric charge to he accumulated in, the
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`capacitor only when the input switch section is switched on; an output switch section
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`provided between the capacitor and the coil,
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`for allowing the electric charge
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`20
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`accumulated in the capacitor to be discharged through the coil. only when the output
`
`

`

`WO 2604/08725UH
`
`PCT/Kmt3li3/0lilli34
`
`awitclr 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.
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`In addition, the driving voltage supnlying section may comprise: a variable
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`:3
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`regulator for converting the AC voltage supplied from the voltage source into an AC
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`voltage specified by a control section; a transformer for boosting the AC voltage output
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`from the variable regulator into an AC. voltage having a magnitude corresponding to a
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`predetermined transformation ratio; and, a rectifying section ~tor converting the AC
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`voltage boosted by the transfonner into the DC voltage.
`
`10
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`The capacitor may be connected in parallel to an additional capacitor group, the
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`additional capacitor group may cornpriee one or more additional capacitor sections
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`connected in parallel, respectively? and each of the traditional capacitor sections; may
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`comprise one additional capacitor and one switching element connected in series.
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`According to another aspect of the present invention, a method of supplying a
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`15
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`pulse current to generate magnetic stimulation ia provided, the method comprising: a
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`step of inputting an operation Start
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`instruction to an apparatus for creating pulse
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`magnetic Stimulation; {a} a step in which a power supplying eection receives an AC
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`voltage from a voltage source and converts the received AC voltage into an output AC
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`voltage having a predetermined magnitude;
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`(in) a step in which a rectifying section
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`:2"
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`converts the converter} AC voltage into a DC voltage; (c) a Step in which when an input
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`l O
`
`

`

`W'O 2604/08725UH
`
`PCT/KmtttlEt/Gillwél
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`switch sectiou is switched on,
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`a capacitor Section accumulates electric charge
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`corresponding to the DC voltage; (d) a, step of switching off the input switch section and
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`switching on an output switch section, when the capacitor section has completely
`
`accumulated the electric charge; (e) a step of allowing a current to flow in a coil; the
`
`C31
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`current being generated due to a both-end voltage corresponding to the electric charge
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`accumulated in the capacitor section; (i) a step iu which the coil generates magnetic flux
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`on the basis or” the current; (g) a step- ot switching on a shunt switch section after a
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`predetermined period time; (h) a step of, switching off the output switch section and
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`switching on the input switch section? when magnetic energy stored in the coil and
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`10
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`voltage accumulated in the capacitor section is lowered iuto a ground level; and a step
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`of repeating the steps (a) to (it) until an operation, end instruction is input.
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`to the
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`apparatus for creating pulse magnetic stimulation, or a predetermined burst on period
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`expires.
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`In addition? a, system an apparatus and a recording medium for enabling the
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`above method of supplying a pulse current to be executed are provided.
`
`rm! CH
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`The method of supplying a pulse current according to the present invention may
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`further comprise a, step of determining at magnitude of voltage to be stored in the
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`capacitor section after carrying out the steps (a) to (it).
`
`in addition: the magnitude of
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`voltage to be stored in the capacitor section may be determined on the basis of a
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`nmguitude of an output AC voltage converted by a variable regulator of the power
`
`20
`
`supplyirig section.
`
`11
`
`

`

`W'O 2604/08725UH
`
`PCT/Kmt3ll3/00l034
`
`Furthermore: the Steps (a) to (cl) may he carried out in a pulse off state where a
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`current does not flow in the coil, and the steps (e) to (h) may he carried out in a pulse on
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`state where a current flows in the coil.
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`Furthermore, the burst on period is a period that the pulse on state and the pulse
`
`U1
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`off state are alternately repeated and thus an induced voltage is generated to create a
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`stimulation, and the burst on period may comprise a stimulation ramp—up period, a
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`stimulation maintenance period and a stimulation rampdoWh period.
`
`During the stimulation ramp—up period, a magnitude of the output AC voltage
`
`converted by the variable regulator of the power supplyihg section becomes higher
`
`to
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`gradually, during the Sthhulation maintenance period; the magnitude: of the output AC
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`voltage of the power eupplyiug section is maintained constantly, ahtl during;
`
`the
`
`stimulation rampalown period? the magnitude of the output AC voltage converted by
`
`the variable regulator of the power supplying unit becomes lower gradually.
`
`The apparatus for creating pulse magnetic stimulation according to the present
`
`15
`
`invention can vary a modulation period corresponding to a period of the pulse on time
`
`and the pulse off time with varying the pulse off time.
`
`Furthermore, the apparatus tot creating pulse magnetic stimulation according to
`
`the present
`
`invention may include at
`
`least one of a ramp modulation, a phase
`
`modulatiom a duration, modulation, a timing modulation, an amplitude modulation, a
`
`[‘42O
`
`ftequeney modulation and a duty modulation.
`
`

`

`W'O 2604/08725UH
`
`PCT/KmtttiEt/Giiiwét
`
`Furthermore, the apparatne for creating poise magnetic stimuiation may include
`
`at ieast one choeen from a ramp modulation, a phase modnta’tion, a duration modulation,
`
`a timing moduiationj an amplitude modulation, 3 frequency modulation and a duty
`
`modulation”
`
`:3
`
`According to another preferred embodiment of the present
`
`invention, a
`
`magnetic flux emitting unit for externaity emitting magnetic flax generated from a coil
`
`in a stimulation apparatue having a resonant circuit. comprising the coii, a tesistoi' and a
`
`capacitor? the apparatus generating a pulse current
`
`to create the magnetic flux,
`
`is
`
`provided? the unit comprising: the coil; a cane having an insulating feature and also
`
`10
`
`having a disk shape surrounding the coil; a grip projected from a lower portion of the
`
`case; and a lead tine coupled to the coil and penetrating through the case and the grip.
`
`The coii of the magnetic flux emitting unit may he formed to be a single-layer
`
`soienoid shape? and the case may have a plurality of air holes for cooling heat generated
`
`from the coit in an air cooling manner.
`
`1.5
`
`Forthennore, 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
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`be coupled to the cage of the magnetic flux emitting, unit. and a cooiant and a stratifonn
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`iron core of the magnetic flux focusing unit may be Sealed
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`in this case,
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`the stratiform iron core of the magnetic flux focusing unit in
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`.\
`SC)
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`disposed in parallel to the coil, the permeability of materials of the central stratifomt
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`W'O 2604/08725UH
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`PCT/Kmt3ll3/001034
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`iron core is larger than the permeability of material of the peripheral stratiforrn iron core,
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`.an end portion of the atratit‘orrn iron core from which the magnetic flux is emitted is
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`formed to have a toy top shape, and the. coolant is circulated through a hose connected
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`to the magnetic flux focusing nnitc
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`Cf!
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`BRIEF DESCRIPTEGN 03‘ THE DMWENGS
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`The aforementioned aspects and other features of the preaent invention will he
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`explained in the following description, taken in cnnjrinction with the accompanying
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`drawings; wherein:
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`Fig. fl is a block diagram illustrating a drive circuit of a conventional apyaratns
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`for treating urinary incontinence;
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`Fig. 2A is a block diagram of an apparatus for «creating pulse magnetic
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`stimulation according to one preferred embodiment of the present invention;
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`Fig. 28 shows; an external appearance of the apparatus for“ creating pulse
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`magnetic stlninlatlnn according to the one preferred embodiment of the present
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`invention;
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`Fig. 3 is a circuit diagram illustrating a detailed configuration of an REE serial
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`resonant circuit of the apparatus for creating pulse magnetic stimulation according to the
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`one preferred embodiment of the present invention;
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`Fig. 4A is a View illustrating an example of a magnet coil according t0 the one
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`14
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`preferred en‘lbotliment el the present invention;
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`Fig, 4B is 21 View illustrating a principle of focusing magnetic flux;
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`Fig. 4C is a View exemplifying a configuration of a probe of the apparatus for
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`creating pulse magnetic stimulation according to the one preferred emboriimenl of the
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`0'1
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`present invention;
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`Fig. 5 is a
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`'iew exemplifying a method of coupling an output monitor
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`according to the one preferred embodiment of the present invention;
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`Fig, 6A is a circuit diagram illustrating in detail the apparatus for creating pulse
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`magnetic stimulation according to the one preferred embodiment of the present
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`10
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`invention;
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`Fig. 6B is a View illustrating an output modulation characteristic of the
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`apparatue for creating pulse magnetic Stimulation according to the one preferred
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`embodiment of the present, invention;
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`Fig. 7A is a block diagram of an apparatus for creating pulse magnetic
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`‘35
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`stimulation according to another preferred embodiment of the present invention; and
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`Fig. TB is a circuit diagram illustrating in detail a square wave generating
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`circuit aceortling to the another preferred embodiment of the preeent invention.
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`{Reference Numerals)
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`105: driving voltage supplying Section
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`20
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`110:
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`voltage input section
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`,
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`§._‘\
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`W'O 2604/08725UH
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`PCT/Km993/001034
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`12G:
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`higlinvoitage iransfcrmer
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`13G:
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`Icciificr
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`140:
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`fiitcring section
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`145:
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`input switch
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`U"!
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`159:
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`pulse capacitor
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`155:
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`Olltlp‘ut switch
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`160:
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`5301111”: switch
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`170: mag let coil
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`175:
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`power monitor
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`1 O
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`18E}:
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`central unit
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`185:
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`peripheral unit
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`5 1E}:
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`variabla tcguiatgr
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`710:
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`Square wave geaacrating circuit
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`DESClflP’E‘ION GF TEE PREFEEU€EB EMBGDIMENTS
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`The pIeSfiiflt inventicn mlatcg to a pulse-magnctic—stinmiation creating apparatus
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`having a mcdulaticn function, having a simplcx circuit cmfigumtima compared to Other
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`canventicmai apparatuses: by connecting a shunt Switch to a iriagnet mi} L in parallel in
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`an RLC scrial Remnant Circuit. The apparatus for crcating pulse magmatic stimulation
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`(
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`[\3
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`awarding to the prcsent inventifin stimulates nerves, muscles, 1301163, b10063 V'csscis of a
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`1 6
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`normmoeaxoorom
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`a variable transformer is a unit for converting input AC voltage into a desired
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`magnitude to form a new AC power source, and may he provided in a primary side or a
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`secondary side, but preferably in the secondary side. The variable regulator adjusts the
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`secondary voltage in accordance with output value information set. by an operator or
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`:2
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`output value.-
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`inforrnation received from the control unit 180.
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`The apparatus for
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`creating pulse magnetic stimulation according to the present invention can continuously
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`vary the amplitude of voltage with respect to the some pulse width using the variable
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`transformer. A reason that
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`the apparatus for creating pulse magnetic stimulation
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`according to the present invention may control the amplitude of voltage prior to the
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`10
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`primary side of the transformer 120 is to eliminate difficulties in the control of the
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`amplitude of voltage and complication in Circuits associated with extremely high level
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`of signal posterior to the transformer 12% .
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`The transformer 120 serves for boosting the output voltage of the voltage input
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`section 110 into a high voltage. For example, a ElltV level transformer of which the
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`1.5
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`input and output signals. are AC voltage and the output voltage to the input voltage is
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`200:1580W} can he employed. A method of designing a transformer is as follows.
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`The magnet coil l7il is first designed in accordance with an. induced voltage desired by
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`a user; and an L value of the magnet coil 1'70 and a desired current are established. After
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`constituting an RLC serial resonant circuit, the pulse capacitor: 150 satisfying an under—
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`20
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`damping condition is then determined. When the pulse capacitor 150 is determined,
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`18.
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`W'O 2604/08725UH
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`the Storage voltage thereof is calculated? and the veltage Obtained by calculating the
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`relevant storage veltage and efficiency of the rectifier lEG and adding a cernpeneating
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`value thereto is the output voltage at the transformer 120. Then, using the current
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`value flowing in lines, the capacitance at? the transformer can be determined.
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`U}
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`The rectifier 130 serves fer converting the high AC voltage into a high DC.
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`voltage. That is, the rectifier 130 carries out the tull~wave rectifieetien using a bridge
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`rectifying diode te convert the AC veltuge into the DC voltage”
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`The filtering sectien 14-0 serves fer smoothing a ripple voltage, since the DC
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`voltage full—wave~rectitied by the rectifier 130 has a ripple waveform having a
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`'o
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`continuous seniiuperied. That is, the filtering section 140 is centreeted to a ground
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`terminal (—) and a pewer supply terminal (+73 at both ends of the bridge rectifying diode.
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`For example; a DC. smeethihg capacitor Serving as a low pass filter can be used.
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`The input switch 145 servee for accumulating electric charge in the pulse
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`capaciter, and examples thereof include a relay, 3 thyristor, an insulated Gate Bipolar
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`Trerrslster (1613'?) and the like, The input switch 3.45 is switched on fer a time period
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`that the pulse eapaclter 159 does net allew a current to flew in the magnet coil 1‘70). and
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`is switched. eff for a time period that the pulse capacitor 150 allows a current to flow in
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`the magnet coil 1’70, Therefcre: the input switch 145 is operated in a sequence inverse
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`to a sequence of the following output switch 155.
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`The pulse capaciter 150 serves as a capaciter in the RLC serial resonant Circuit,
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`PCT/KmttiiEt/Giiiwéi
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`and the pulse capacitet 15!} may comprise a piutniity of pulse capacitet groups
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`cennected in paraiiei each Other (see Fig. 3)
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`The eutput switch 155 serves for discharging the electric charge accumulated in
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`the pulse cepacitet 159. The shunt switch 160 serves for obtaining a pulse magnetic
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`iieiti, not an alternate magnetic fiehi Examples of the output Switch 155 and the shunt
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`switch iétiinciude a ieiay, e thyi'ister, an insulated Gate Bipniat Transistor (EGBT) and
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`the like.
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`The magnet eoii 170 serves fer cenvei'ting the electric fieid into the magnetic
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`tieid tn ehtain a magnetic induced vii‘tage. The newer meniter 1'75 detects; magnetic
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`10
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`flux generated tine to a large current flewing in lines through the magnet coil 17G anti
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`detects the current flowing in tines, thereby serving for detecting errors of the large
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`newer Signals.
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`Since the power meniter 175- uses the magnetic flux; generated tine to
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`the current flowing in the tines theugh the magnet eoii 170; the pewer inc-inter 1‘75 can
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`be implemented in a nemcenteet manner, and thus does not require. a separate newer
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`15
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`3031168“ A method of deeigning the power nieniter will he described in detaii with
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`reference in Fig. 5.
`
`The central unit 18% serves for controlling the input variation (for example,
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`adjustment of variable transfennet‘), tin/0ft of the input switch 145, tin/eff of a selection
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`switch (see Fig. 3), tin/eff of the shunt Switch 16E}, acquisition of the power monitoring
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`20
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`vaine, intetfece with perinhetei units, or the like. The control unit 180 may further
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`20
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`cempriee units such as a centreiier, a rrrerrieryy an A/D and D/A relay er the iiire
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`required for driving the syetem, and may further com