JP4614368B2 - 細分された中性電極の2部分間の遷移インピーダンスを測定する測定装置 - Google Patents
細分された中性電極の2部分間の遷移インピーダンスを測定する測定装置 Download PDFInfo
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- JP4614368B2 JP4614368B2 JP2007513765A JP2007513765A JP4614368B2 JP 4614368 B2 JP4614368 B2 JP 4614368B2 JP 2007513765 A JP2007513765 A JP 2007513765A JP 2007513765 A JP2007513765 A JP 2007513765A JP 4614368 B2 JP4614368 B2 JP 4614368B2
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- 230000007704 transition Effects 0.000 title claims description 63
- 230000007935 neutral effect Effects 0.000 title claims description 57
- 238000005259 measurement Methods 0.000 claims description 41
- 230000008878 coupling Effects 0.000 claims description 21
- 238000010168 coupling process Methods 0.000 claims description 21
- 238000005859 coupling reaction Methods 0.000 claims description 21
- 239000003990 capacitor Substances 0.000 claims description 13
- 238000001356 surgical procedure Methods 0.000 claims description 7
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- 238000004364 calculation method Methods 0.000 description 2
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/16—Indifferent or passive electrodes for grounding
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/1206—Generators therefor
- A61B18/1233—Generators therefor with circuits for assuring patient safety
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/16—Indifferent or passive electrodes for grounding
- A61B2018/167—Passive electrodes capacitively coupled to the skin
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Plasma & Fusion (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Otolaryngology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Surgical Instruments (AREA)
Description
(式7)
式中、Usは共鳴回路の交流電圧のピーク値であり、Isは電流強度のピーク値である。交流電圧のピーク値は回路部分46によって測定することができ、一方、電流強度Isのピーク値は定電流源として構成される電流供給装置28の設定から知られる。
4、6 電極部分
8 中性電極
10 中性電極配線
12 分岐点
14、16 分岐
18、20 結合キャパシタ
22 測定コイル
24 基本共鳴回路
25 拡張共鳴回路
26 第1配線
28 電流供給装置
30 キャパシタ
32 第2配線
34 マイクロ制御装置
36 タイマー
38 レベル調節
40 アナログコンパレーター
42 DC/DC変換器
44 光電子カプラー
46 回路部分
48 ピーク電圧リミッター
50 同期整流器
52 ローパスフィルター
54 A/D変換器
56 UART
58、60 電流センサー
62、64 ピーク値検出回路
Claims (7)
- 2つの電極部分を並列に接続することのできる共鳴回路(24)および前記共鳴回路(24、25)に測定交流電圧を印加することのできる電流供給装置(28)を用いて、高周波手術に使用するための細分された中性電極(8)の2つの電極部分(4、6)間の遷移インピーダンスを測定する測定装置であって、
前記測定装置が、制御手段(34)および位相測定装置(36、40)を備えて、前記電流と電圧の位相を位相測定装置による制御手段によって検出することができ、前記電流供給装置の周波数が前記電流と電圧が同相にあるように制御手段によって制御することができるように、前記遷移インピーダンスの純粋な容量成分を測定するために設計されることを特徴とする測定装置。 - 前記測定装置が、前記電流供給装置(28)によって前記測定交流電圧が前記共鳴回路(24、25)中に直接供給されるように設計されることを特徴とする請求項1に記載の測定装置。
- 前記共鳴回路が、結合キャパシタンスおよびそれに並列の測定インダクタンス(22)を備え、前記結合キャパシタンスが2個の結合キャパシタ(18、20)によって形成され、その各々が細分された中性電極配線(10)の分岐に配置されることを特徴とする請求項1または2に記載の測定装置。
- 前記電流供給装置(28)が定電流電源であり、その周波数がタイマー信号による制御手段(34)によって調節することができ、出力として矩形波交流電流を発生することを特徴とし、電流と電圧の間の位相差をタイマー信号による制御手段およびアナログコンパレーターによって検出することができるように前記電圧のゼロ交差を検出するためのアナログコンパレーター(40)が提供されることを特徴とする請求項1から3のいずれか1項に記載の測定装置。
- 遷移インピーダンスが組み込まれている間、前記共鳴回路の共鳴条件中の前記ピーク電圧値を測定することができるように、前記共鳴回路(24、25)の電圧を測定するための電圧測定装置(46)が提供されることを特徴とする請求項1から4のいずれか1項に記載の測定装置。
- 前記中性電極(8)の電極部分(4、6)へ向かう各配線分岐(14、16)に電流センサー(58、60)が結合され、それによって、結合した電極部分から流れ去る電流を測定することができることを特徴とする請求項1から5のいずれか1項に記載の測定装置。
- 請求項1から6のいずれか1項に記載の細分された中性電極(8)の2つの電極部分(4、6)間の遷移インピーダンスを測定する測定装置(2)を特徴とする少なくとも1個の活性電極および細分された中性電極(8)を有する高周波手術器具。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004025613A DE102004025613B4 (de) | 2004-05-25 | 2004-05-25 | Verfahren und Messvorrichtung zur Bestimmung der Übergangsimpendanz zwischen zwei Teilelektroden einer geteilten Neutralelektrode |
PCT/EP2005/005512 WO2005115262A1 (de) | 2004-05-25 | 2005-05-20 | Verfahren und messvorrichtung zur bestimmung der übergangsimpendanz zwischen zwei teilektroden einer getelten neutralelektrode |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008500080A JP2008500080A (ja) | 2008-01-10 |
JP4614368B2 true JP4614368B2 (ja) | 2011-01-19 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007513765A Expired - Fee Related JP4614368B2 (ja) | 2004-05-25 | 2005-05-20 | 細分された中性電極の2部分間の遷移インピーダンスを測定する測定装置 |
Country Status (6)
Country | Link |
---|---|
US (2) | US7425835B2 (ja) |
EP (1) | EP1753356B1 (ja) |
JP (1) | JP4614368B2 (ja) |
CN (1) | CN100409821C (ja) |
DE (2) | DE102004025613B4 (ja) |
WO (1) | WO2005115262A1 (ja) |
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2004
- 2004-05-25 DE DE102004025613A patent/DE102004025613B4/de not_active Expired - Fee Related
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2005
- 2005-05-20 EP EP05746317A patent/EP1753356B1/de not_active Expired - Fee Related
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- 2005-05-20 WO PCT/EP2005/005512 patent/WO2005115262A1/de active Application Filing
- 2005-05-20 DE DE502005007707T patent/DE502005007707D1/de active Active
- 2005-05-20 JP JP2007513765A patent/JP4614368B2/ja not_active Expired - Fee Related
- 2005-05-20 CN CNB2005800167742A patent/CN100409821C/zh not_active Expired - Fee Related
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EP1753356A1 (de) | 2007-02-21 |
WO2005115262A1 (de) | 2005-12-08 |
US20080278179A1 (en) | 2008-11-13 |
US20070222458A1 (en) | 2007-09-27 |
US7425835B2 (en) | 2008-09-16 |
DE502005007707D1 (de) | 2009-08-27 |
JP2008500080A (ja) | 2008-01-10 |
US7554341B2 (en) | 2009-06-30 |
DE102004025613A1 (de) | 2005-12-29 |
DE102004025613B4 (de) | 2008-08-07 |
EP1753356B1 (de) | 2009-07-15 |
CN1956683A (zh) | 2007-05-02 |
CN100409821C (zh) | 2008-08-13 |
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