JP2007513468A - 埋め込み可能医療デバイスのためのmemsスイッチ - Google Patents
埋め込み可能医療デバイスのためのmemsスイッチ Download PDFInfo
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H59/00—Electrostatic relays; Electro-adhesion relays
- H01H59/0009—Electrostatic relays; Electro-adhesion relays making use of micromechanics
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/362—Heart stimulators
- A61N1/37—Monitoring; Protecting
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/38—Applying electric currents by contact electrodes alternating or intermittent currents for producing shock effects
- A61N1/39—Heart defibrillators
- A61N1/3906—Heart defibrillators characterised by the form of the shockwave
- A61N1/3912—Output circuitry therefor, e.g. switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/0036—Switches making use of microelectromechanical systems [MEMS]
- H01H2001/0042—Bistable switches, i.e. having two stable positions requiring only actuating energy for switching between them, e.g. with snap membrane or by permanent magnet
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Abstract
【解決手段】双安定MEMSスイッチは、可動接点を有する中央可動梁と、可動梁を支持し、接点力を生成する懸垂保持システムと、駆動信号の印加によって梁を変位させるアクチュエータと、スイッチがクローズ状態にある時に可動接点に干渉する固定接点とを含む。スイッチは、フォトリソグラフィ、DRIE、及び犠牲酸化物エッチングと、その後の、電気接触点の耐磨耗性金属又は合金による金属化を使用して、Si/SiO2/Siウェハから作製される。アクチュエーション層を、ウェハのシリコン基板層から作製し、信号層を、上部シリコン層から作製する。それによって、アクチュエーション層と信号層は、介在するSiO2層によって、電気的に分離し且つ機械的に結合する。
【選択図】図5
Description
例
上述した方法を使用して作製されたMEMSスイッチは、窒素雰囲気内で密閉されたセラミックDILハウジング内に実装した後に評価された。
設計
構造は、エキスパートシステムを使用して設計される。静電コムアクチュエータは図16に示され、機械的ばねシステムは図17に示される。図16及び図17は、スイッチの振る舞いを定量的に記述する理論において使用することになるパラメータを規定する。一般的な値が、図18の表1に与えられる。図16に示すように、wは指部の幅であり、gは指部間のギャップであり、Iは指部の重なりであり、dは先端からコムベースまでの距離であり、hは構造の高さである(作製時のI及びd)。図17に示すように、機械的ばねシステムが初期位置にある時、t1は2重クランプ式梁の厚さであり、L1は長さであり、thはヒンジの厚さであり、Ihは長さであり、Lhはアーム長である。さらに、xoはオフセットであり、xcは接点位置であり、一方、tsは接点ばねの厚さであり、wsは幅であり、hsは長さである。移動接点部材は、半径rcを有するバンプを含み、完成した構造は高さhを有する。
実験セットアップ
ベアダイは、アレッシ・インダストリーズ社(Alessi Industries)のニードルプローバを使用して、クラス10000に制御された環境に配置された顕微鏡(Mitutoyo)に接触する。アクチュエーション電圧を作成するために、標準電源がEMCO高電圧増幅器と組み合わせて使用され、接点電圧を測定するために標準マルチメータが使用される。
静電アクチュエータ
コム指部(図16)を平行板コンデンサとしてモデル化することによって、変位xの関数としての、アクチュエータの2つの部分(part)間の静電容量Cは、
動特性
ニュートンの慣性の法則は、時間の関数としての、変位についての微分方程式(動特性)を与える。
Claims (9)
- 微小電気機械システム、即ちMEMSスイッチであって、
可動梁と、
該可動梁を支持する手段と、
前記可動梁を変位させる駆動手段と、
該スイッチの状態に基づいて前記可動梁に干渉する接点手段と,
を備えるMEMSスイッチ。 - 前記可動梁は、実質的に中央に配設され、可動接点を含む、請求項1に記載のMEMSスイッチ。
- 前記可動梁は、懸垂保持システムを含む、請求項2に記載のMEMSスイッチ。
- 前記駆動手段は、始動信号の印加によって前記可動梁を変位させるアクチュエータを含む、請求項1に記載のMEMSスイッチ。
- 前記接点手段は固定構造を含む、請求項1に記載のMEMSスイッチ。
- アクチュエーション層を含む、請求項1に記載のMEMSスイッチ。
- Si、SiO2、及びSiウェハを含む、請求項1に記載のMEMSスイッチ。
- Si基板層がアクチュエーション層を形成し、Si上部層が信号層を形成する、請求項1に記載のMEMSスイッチ。
- 前記アクチュエーション層と前記信号層は、介在SiO2層によって、電気的に分離し、且つ、機械的に結合する、請求項8に記載のMEMSスイッチ。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US51504203P | 2003-10-28 | 2003-10-28 | |
US56501504P | 2004-04-23 | 2004-04-23 | |
PCT/US2004/035681 WO2005045869A1 (en) | 2003-10-28 | 2004-10-27 | Mems switching circuit and method for an implantable medical device |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2007513468A true JP2007513468A (ja) | 2007-05-24 |
Family
ID=34576756
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006538222A Pending JP2007513468A (ja) | 2003-10-28 | 2004-10-27 | 埋め込み可能医療デバイスのためのmemsスイッチ |
Country Status (5)
Country | Link |
---|---|
US (1) | US7388459B2 (ja) |
EP (1) | EP1697956B1 (ja) |
JP (1) | JP2007513468A (ja) |
CA (1) | CA2543472A1 (ja) |
WO (1) | WO2005045869A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012508627A (ja) * | 2008-11-13 | 2012-04-12 | プロテウス バイオメディカル インコーポレイテッド | ペーシングおよび刺激システム、デバイス、および方法 |
JP2022511224A (ja) * | 2018-07-18 | 2022-01-31 | ウニベルジテート ロストック | 自律的に調整可能な電気的心臓ペースメーカを確立するためのオンチップ心臓ペースメーカ細胞 |
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2004
- 2004-10-26 US US10/973,117 patent/US7388459B2/en not_active Expired - Fee Related
- 2004-10-27 EP EP04796558.7A patent/EP1697956B1/en not_active Expired - Lifetime
- 2004-10-27 WO PCT/US2004/035681 patent/WO2005045869A1/en active Application Filing
- 2004-10-27 JP JP2006538222A patent/JP2007513468A/ja active Pending
- 2004-10-27 CA CA002543472A patent/CA2543472A1/en not_active Abandoned
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012508627A (ja) * | 2008-11-13 | 2012-04-12 | プロテウス バイオメディカル インコーポレイテッド | ペーシングおよび刺激システム、デバイス、および方法 |
JP2022511224A (ja) * | 2018-07-18 | 2022-01-31 | ウニベルジテート ロストック | 自律的に調整可能な電気的心臓ペースメーカを確立するためのオンチップ心臓ペースメーカ細胞 |
JP7244621B2 (ja) | 2018-07-18 | 2023-03-22 | ウニベルジテート ロストック | 自律的に調整可能な電気的心臓ペースメーカを確立するためのオンチップ心臓ペースメーカ細胞 |
Also Published As
Publication number | Publication date |
---|---|
WO2005045869A1 (en) | 2005-05-19 |
EP1697956A1 (en) | 2006-09-06 |
EP1697956B1 (en) | 2014-03-05 |
CA2543472A1 (en) | 2005-05-19 |
US20050115811A1 (en) | 2005-06-02 |
US7388459B2 (en) | 2008-06-17 |
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