JPH09501329A - 経尿道rf切除装置 - Google Patents
経尿道rf切除装置Info
- Publication number
- JPH09501329A JPH09501329A JP7501895A JP50189595A JPH09501329A JP H09501329 A JPH09501329 A JP H09501329A JP 7501895 A JP7501895 A JP 7501895A JP 50189595 A JP50189595 A JP 50189595A JP H09501329 A JPH09501329 A JP H09501329A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- prostate
- impedance
- temperature
- ablation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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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
- A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B2017/00017—Electrical control of surgical instruments
- A61B2017/00022—Sensing or detecting at the treatment site
- A61B2017/00026—Conductivity or impedance, e.g. of tissue
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B2017/00017—Electrical control of surgical instruments
- A61B2017/00022—Sensing or detecting at the treatment site
- A61B2017/00084—Temperature
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
- A61B2017/00238—Type of minimally invasive operation
- A61B2017/00274—Prostate operation, e.g. prostatectomy, turp, bhp treatment
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
- A61B2017/00292—Surgical instruments, devices or methods for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
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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
- A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
- A61B2018/00011—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids
- A61B2018/00023—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids closed, i.e. without wound contact by the fluid
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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
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00059—Material properties
- A61B2018/00071—Electrical conductivity
- A61B2018/00083—Electrical conductivity low, i.e. electrically insulating
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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
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00505—Urinary tract
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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
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00547—Prostate
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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
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00577—Ablation
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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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00642—Sensing and controlling the application of energy with feedback, i.e. closed loop control
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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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00696—Controlled or regulated parameters
- A61B2018/00702—Power or energy
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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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00791—Temperature
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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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00791—Temperature
- A61B2018/00815—Temperature measured by a thermistor
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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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00827—Current
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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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00875—Resistance or impedance
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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
- A61B2018/1246—Generators therefor characterised by the output polarity
- A61B2018/1253—Generators therefor characterised by the output polarity monopolar
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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
- A61B2018/1273—Generators therefor including multiple generators in one device
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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
- A61B2018/1497—Electrodes covering only part of the probe circumference
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Otolaryngology (AREA)
- Plasma & Fusion (AREA)
- Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- External Artificial Organs (AREA)
- Electrotherapy Devices (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.近位末端部と遠位末端部とを有し、かつ尿道に挿入するようになった寸法を 有する可撓性の細長い管状部材を備えるプローブと、可撓性の細長い管状部材の 遠位末端部によって支持され、かつボアを有する導電材料で形成された円筒状ス リーブ切除電極とを有し、可撓性の細長い管状部材には、切除電極を冷却するた めに冷却された流体を切除電極のボアに送出するための第1の流れルーメンと、 冷却された流体を切除電極のボアから戻すための第2の流れルーメンとが設けら れ、更に、冷却溶液をプローブに供給するためのプローブに接続された手段と、 電極が冷却されている間、RFエネルギーを電極に提供するためにプローブに接 続された手段と、尿道壁が切除電極に送出されるRFエネルギーからの不可逆的 損傷を受けるのを免れるために、切除電極が所定温度以下の温度に維持されるよ うに、切除電極の温度を監視するための手段とを有する、尿道壁によって形成さ れた尿道を通して前立腺の切除を行うための経尿道RF装置。 2.RFエネルギーが、スリーブ電極によって支持されている分割された絶縁層 を有し、RFエネルギーは、分割された絶縁層によって覆われていない領域のス リーブ電極だけから放射されること、を特徴とする請求項1に記載の装置。 3.可撓性の細長い管状部材と、可撓性の細長い管状部材の遠位末端部によって 支持された切除電極は、物理的に尿道壁を突き剌す必要なく切除を行っている間 、RFエネルギーを与える間、尿道内に残すことができるような形状を有するこ と、を特徴とする請求項1に記載の装置。 4.切除電極の温度を検知するための前記手段は、電極が所定温度以上に上昇し ないように、電極へのRF電力の適用を制御するための自動手段を有すること、 を特徴とする請求項1に記載の装置。 5.切除電極の温度を制御するための前記手段は、尿道壁の温度が37−40℃ の範囲の温度を越えないように温度を制御すること、を特徴とする請求項4に記 載の装置。 6.更に、可撓性の細長い部材の遠位末端部によって支持され、かつ、電気的信 号を提供するインピーダンス検知手段と、測定されたインピーダンスを表示す るためのプローブから遠隔の前記電気的信号に接続された手段とを有すること、 を特徴とする請求項1に記載の装置。 7.前記インピーダンス測定手段は、少なくとも1対のインピーダンス検知電極 と、インピーダンス検知電極に10ミリアンペア以下のRF定電流エネルギーを 供給するための手段とを有すること、を特徴とする請求項6に記載の装置。 8.前記インピーダンス検知手段は、可撓性の細長い管状部材の遠位末端部によ って支持された周方向に間隔を隔てた第1インピーダンス検知電極と第2インピ ーダンス検知電極とを有すること、を特徴とする請求項7に記載の装置。 9.第1の対のインピーダンス検知電極と第2の対のインピーダンス検知電極の 電極は、互いに約90°だけ間隔を隔てていること、を特徴とする請求項8に記 載の装置。 10.尿道壁によって形成された尿道に前立腺へと挿入するようになっており、そ の遠位先端部に支持された電極を有するプローブの使用により前立腺の組織をR F切除するための方法であって、電極にRFを供給して、RFエネルギーを前立 腺の組織に導入させる工程と、更に、前立腺の組織を切除するために、RFエネ ルギーを前立腺の組織に供給している間、尿道壁に不可逆的損傷を与えるのを防 止するように、尿道壁の温度を50℃以下に維持するように、RFエネルギーが 前立腺に与えられている間、電極を冷却する工程とを有する方法。 11.電極の温度は、約37−40℃の温度に維持されていること、を特徴とする 請求項10に記載の方法。 12.前立腺の組織は、取り囲む身体組織のインピーダンスより小さいインピーダ ンスを有し、更に、先端部が遭遇した組織のインピーダンスを検知する工程と、 前立腺の、より低いインピーダンスを検知することによって、いつ前立腺に到達 したかを測定する工程と、更に、検知されたより低いインピーダンスに従って、 プローブを前立腺に位置決めする工程とを有すること、を特徴とする請求項10 に記載の方法。 13.更に、電極へのRF電力の適用を制御し、約1センチメートルの深さまでの 前立腺の組織の切除を引き起こすこと、を特徴とする請求項12に記載の方法。 14.電極は、RFエネルギーが電極に供給されている間、尿道内に維持され、切 除を尿道壁を物理的に突き通すことなく行うこと、を特徴とする請求項10に記 載の方法。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US7491893A | 1993-06-10 | 1993-06-10 | |
| US08/074,918 | 1993-06-10 | ||
| PCT/US1994/006124 WO1994028809A1 (en) | 1993-06-10 | 1994-05-31 | Transurethral radio frequency ablation apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09501329A true JPH09501329A (ja) | 1997-02-10 |
| JP3587848B2 JP3587848B2 (ja) | 2004-11-10 |
Family
ID=22122433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50189595A Expired - Lifetime JP3587848B2 (ja) | 1993-06-10 | 1994-05-31 | 経尿道rf切除装置 |
Country Status (9)
| Country | Link |
|---|---|
| US (2) | US5520684A (ja) |
| EP (1) | EP0703756B1 (ja) |
| JP (1) | JP3587848B2 (ja) |
| AT (1) | ATE284650T1 (ja) |
| AU (2) | AU686173B2 (ja) |
| CA (1) | CA2164860C (ja) |
| DE (1) | DE69434185T2 (ja) |
| IL (1) | IL109923A (ja) |
| WO (1) | WO1994028809A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012531984A (ja) * | 2009-07-07 | 2012-12-13 | エルベ エレクトロメディジン ゲーエムベーハー | 電気手術器具、及び電気手術器具の製造方法 |
Families Citing this family (412)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5514131A (en) * | 1992-08-12 | 1996-05-07 | Stuart D. Edwards | Method for the ablation treatment of the uvula |
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| US6958062B1 (en) | 1993-11-08 | 2005-10-25 | Rita Medical Systems, Inc. | Multiple antenna ablation apparatus and method |
| US6071280A (en) | 1993-11-08 | 2000-06-06 | Rita Medical Systems, Inc. | Multiple electrode ablation apparatus |
| US5807308A (en) * | 1996-02-23 | 1998-09-15 | Somnus Medical Technologies, Inc. | Method and apparatus for treatment of air way obstructions |
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| US5730719A (en) * | 1994-05-09 | 1998-03-24 | Somnus Medical Technologies, Inc. | Method and apparatus for cosmetically remodeling a body structure |
| US5843021A (en) | 1994-05-09 | 1998-12-01 | Somnus Medical Technologies, Inc. | Cell necrosis apparatus |
| US6152143A (en) * | 1994-05-09 | 2000-11-28 | Somnus Medical Technologies, Inc. | Method for treatment of air way obstructions |
| US5743870A (en) * | 1994-05-09 | 1998-04-28 | Somnus Medical Technologies, Inc. | Ablation apparatus and system for removal of soft palate tissue |
| US5817049A (en) * | 1994-05-09 | 1998-10-06 | Somnus Medical Technologies, Inc. | Method for treatment of airway obstructions |
| US6056744A (en) | 1994-06-24 | 2000-05-02 | Conway Stuart Medical, Inc. | Sphincter treatment apparatus |
| US5823197A (en) * | 1994-06-24 | 1998-10-20 | Somnus Medical Technologies, Inc. | Method for internal ablation of turbinates |
| US6009877A (en) | 1994-06-24 | 2000-01-04 | Edwards; Stuart D. | Method for treating a sphincter |
| US5800429A (en) * | 1994-06-24 | 1998-09-01 | Somnus Medical Technologies, Inc. | Noninvasive apparatus for ablating turbinates |
| US6092528A (en) * | 1994-06-24 | 2000-07-25 | Edwards; Stuart D. | Method to treat esophageal sphincters |
| US5827277A (en) * | 1994-06-24 | 1998-10-27 | Somnus Medical Technologies, Inc. | Minimally invasive apparatus for internal ablation of turbinates |
| US6044846A (en) * | 1994-06-24 | 2000-04-04 | Edwards; Stuart D. | Method to treat esophageal sphincters |
| US6405732B1 (en) | 1994-06-24 | 2002-06-18 | Curon Medical, Inc. | Method to treat gastric reflux via the detection and ablation of gastro-esophageal nerves and receptors |
| US6575969B1 (en) | 1995-05-04 | 2003-06-10 | Sherwood Services Ag | Cool-tip radiofrequency thermosurgery electrode system for tumor ablation |
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| US6090105A (en) | 1995-08-15 | 2000-07-18 | Rita Medical Systems, Inc. | Multiple electrode ablation apparatus and method |
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| US6090106A (en) | 1996-01-09 | 2000-07-18 | Gyrus Medical Limited | Electrosurgical instrument |
| US6126657A (en) * | 1996-02-23 | 2000-10-03 | Somnus Medical Technologies, Inc. | Apparatus for treatment of air way obstructions |
| US5820580A (en) * | 1996-02-23 | 1998-10-13 | Somnus Medical Technologies, Inc. | Method for ablating interior sections of the tongue |
| US5738114A (en) * | 1996-02-23 | 1998-04-14 | Somnus Medical Technologies, Inc. | Method and apparatus for treatment of air way obstructions |
| US5879349A (en) * | 1996-02-23 | 1999-03-09 | Somnus Medical Technologies, Inc. | Apparatus for treatment of air way obstructions |
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| US5938692A (en) * | 1996-03-26 | 1999-08-17 | Urologix, Inc. | Voltage controlled variable tuning antenna |
| US5987360A (en) * | 1996-05-03 | 1999-11-16 | Urologix, Inc. | Axial preferential thermal therapy |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP0703756A4 (en) | 1998-02-25 |
| DE69434185T2 (de) | 2005-06-02 |
| CA2164860A1 (en) | 1994-12-22 |
| WO1994028809A1 (en) | 1994-12-22 |
| US5520684A (en) | 1996-05-28 |
| JP3587848B2 (ja) | 2004-11-10 |
| US5957922A (en) | 1999-09-28 |
| ATE284650T1 (de) | 2005-01-15 |
| AU6961794A (en) | 1995-01-03 |
| AU718535B2 (en) | 2000-04-13 |
| CA2164860C (en) | 2005-09-06 |
| AU686173B2 (en) | 1998-02-05 |
| EP0703756B1 (en) | 2004-12-15 |
| IL109923A0 (en) | 1994-10-07 |
| EP0703756A1 (en) | 1996-04-03 |
| DE69434185D1 (de) | 2005-01-20 |
| AU6383298A (en) | 1998-07-09 |
| IL109923A (en) | 1998-12-06 |
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