JP5676254B2 - 磁気刺激用駆動回路 - Google Patents
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N2/00—Magnetotherapy
- A61N2/02—Magnetotherapy using magnetic fields produced by coils, including single turn loops or electromagnets
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N2/00—Magnetotherapy
- A61N2/004—Magnetotherapy specially adapted for a specific therapy
- A61N2/006—Magnetotherapy specially adapted for a specific therapy for magnetic stimulation of nerve tissue
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Magnetic Treatment Devices (AREA)
Description
一実施形態によると、改善された駆動回路が提供される。本駆動回路は、治療用の磁気パルスを発生するために刺激コイルに必要な電力を低減する。電力が低減した結果、磁気刺激コイルにより発生する熱の規模・量を低減することにより、刺激コイルに関連する冷却の必要性が低減される。これらの低減の故に、磁気刺激装置全体は、複雑度が減り、小型化され、廉価となる。以下に説明するように、実施形態は、TMSおよびrTMSの電力要件を約50%低減することにより、従来の駆動回路および刺激コイルと比較して約800%の効率の向上を生み出す。
様々な実施形態の態様を実施するための磁気装置の動作および用途の概要をここで説明する。当業者には公知であるように、導体に誘導される電界の大きさは、導体を横切る磁束密度の変化速度に比例する。電界が導体内に誘導されると、電界は導体内にそれに対応する電流が発生する。電流は、所定の点での電界ベクトルと同じ方向に流れる。ピーク電界は、磁束密度の変化の時間速度が最大の時に発生し、それ以外の時には減少する。磁気パルス時には、電流は、磁界を保つ傾向がある方向に流れる(すなわち、レンツの法則)。
電界を発生させる磁気装置に関連し、強磁性コアを用いることができる。いくつかの実施形態においては、このような電界は、例えば、経頭蓋磁気刺激(transcranial magnetic stimulation:TMS)、反復TMS(repetitive TMS:rTMS)、磁気痙攣(発作)療法(magnetic seizure therapy:MST)、神経伝導障害の診断、末梢神経の不快感の低減などの経皮的磁気刺激を実行することを目的とする。繰返しになるが、以下の例のいくつかは、説明および明瞭化の目的でTMSおよびrTMSの実施形態に関連して説明してあるかもしれないが、上記に挙げた全てを含む、任意の種類の経皮的磁気刺激を本発明の実施形態によって実施することができる。さらに、また、上述のように、実施形態は経皮的磁気刺激に限定されない。実施形態は、任意の目的で磁場を発生させる磁気装置に関連して用いられるものである。
Claims (6)
- 磁気刺激装置であって、
磁場を発生させるインダクタと
電力を供給する電力源であって、該電力源は、電源とバッテリーとから構成され、前記電力源は、前記電源と前記バッテリーとの組み合わせた電力が、前記磁場を発生するために用いられるように構成され、前記電源は、前記磁場のパルス間に前記バッテリーを再充電するように構成され、
エネルギー蓄積装置であって、該エネルギー蓄積装置は、前記電源と前記バッテリーとの組み合わせた前記電力が、前記電力源から供給されるように構成され、
前記インダクタと前記電力源を動作可能に連結する半導体スイッチ装置と
を具え、
前記半導体スイッチ装置が、前記電力源からの電力を前記インダクタに導き、前記磁場を発生させることを特徴とする磁気刺激装置。 - 当該装置は、実質的に可搬性となっていることを特徴とする請求項1記載の磁気刺激装置。
- 前記磁場は、共振周波数で発生されることを特徴とする請求項1記載の磁気刺激装置。
- 前記半導体スイッチング装置は、一体化されたゲート整流型サイリスタ(IGCT)、絶縁ゲート型バイポーラトランジスタ(IGBT)、又は前記IGBTに印加する高過渡電圧を減少するために前記IGBTに並列に接続された整流ダイオードであることを特徴とする請求項1記載の磁気刺激装置。
- 前記電力源は、前記エネルギー蓄積装置を充電し、
前記半導体スイッチング装置は、前記エネルギー蓄積装置を前記インダクタに放電させることによって前記電力源からの電力を前記インダクタに導き、前記磁場を発生させ、
前記エネルギー蓄積装置は、少なくとも1つのキャパシタからなることを特徴とする請求項1記載の磁気刺激装置。 - 前記発生される磁場は、経頭蓋磁気刺激(TMS)、反復経頭蓋磁気刺激(rTMS)、磁気痙攣(発作)療法(MST)、および末梢神経刺激のうちの1つのために構成されたことを特徴とする請求項1記載の磁気刺激装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US11/759,537 US7744523B2 (en) | 2007-06-07 | 2007-06-07 | Drive circuit for magnetic stimulation |
US11/759,537 | 2007-06-07 | ||
PCT/US2008/066143 WO2008154396A1 (en) | 2007-06-07 | 2008-06-06 | Drive circuit for magnetic stimulation |
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JP2013212149A Division JP2014039857A (ja) | 2007-06-07 | 2013-10-09 | 磁気刺激用駆動回路 |
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JP2010528784A JP2010528784A (ja) | 2010-08-26 |
JP5676254B2 true JP5676254B2 (ja) | 2015-02-25 |
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JP2010511370A Active JP5676254B2 (ja) | 2007-06-07 | 2008-06-06 | 磁気刺激用駆動回路 |
JP2013212149A Pending JP2014039857A (ja) | 2007-06-07 | 2013-10-09 | 磁気刺激用駆動回路 |
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Country Status (8)
Country | Link |
---|---|
US (1) | US7744523B2 (ja) |
EP (1) | EP2158003B1 (ja) |
JP (2) | JP5676254B2 (ja) |
AU (1) | AU2008261929B2 (ja) |
CA (1) | CA2689623C (ja) |
DK (1) | DK2158003T3 (ja) |
ES (1) | ES2619170T3 (ja) |
WO (1) | WO2008154396A1 (ja) |
Families Citing this family (64)
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US20110082326A1 (en) * | 2004-04-09 | 2011-04-07 | Mishelevich David J | Treatment of clinical applications with neuromodulation |
US8868177B2 (en) * | 2009-03-20 | 2014-10-21 | ElectroCore, LLC | Non-invasive treatment of neurodegenerative diseases |
US9037247B2 (en) | 2005-11-10 | 2015-05-19 | ElectroCore, LLC | Non-invasive treatment of bronchial constriction |
US8267850B2 (en) | 2007-11-27 | 2012-09-18 | Cervel Neurotech, Inc. | Transcranial magnet stimulation of deep brain targets |
US9352167B2 (en) | 2006-05-05 | 2016-05-31 | Rio Grande Neurosciences, Inc. | Enhanced spatial summation for deep-brain transcranial magnetic stimulation |
EP3081260A1 (en) * | 2006-09-01 | 2016-10-19 | GSMO Pty Ltd | Motion sickness device |
US8956274B2 (en) | 2007-08-05 | 2015-02-17 | Cervel Neurotech, Inc. | Transcranial magnetic stimulation field shaping |
EP2183025B1 (en) | 2007-08-20 | 2017-07-05 | Cervel Neurotech, Inc. | Firing patterns for deep brain transcranial magnetic stimulation |
US8265910B2 (en) | 2007-10-09 | 2012-09-11 | Cervel Neurotech, Inc. | Display of modeled magnetic fields |
US8795148B2 (en) | 2009-10-26 | 2014-08-05 | Cervel Neurotech, Inc. | Sub-motor-threshold stimulation of deep brain targets using transcranial magnetic stimulation |
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EP2384223A4 (en) | 2009-01-07 | 2014-06-18 | Cervel Neurotech Inc | SHAPED COILS FOR BRAIN MAGNETIC STIMULATION |
US8321012B2 (en) * | 2009-12-22 | 2012-11-27 | The Invention Science Fund I, Llc | Device, method, and system for neural modulation as vaccine adjuvant in a vertebrate subject |
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US9492679B2 (en) | 2010-07-16 | 2016-11-15 | Rio Grande Neurosciences, Inc. | Transcranial magnetic stimulation for altering susceptibility of tissue to pharmaceuticals and radiation |
ITRE20120010A1 (it) * | 2012-02-16 | 2013-08-17 | Mantis S R L | Metodo e circuito per la generazione di un campo magnetico pulsato per un dispositivo elettromedicale |
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