ATE457770T1 - Katheter mit verjüngter mehrkammer-balloon - Google Patents

Katheter mit verjüngter mehrkammer-balloon

Info

Publication number
ATE457770T1
ATE457770T1 AT06801087T AT06801087T ATE457770T1 AT E457770 T1 ATE457770 T1 AT E457770T1 AT 06801087 T AT06801087 T AT 06801087T AT 06801087 T AT06801087 T AT 06801087T AT E457770 T1 ATE457770 T1 AT E457770T1
Authority
AT
Austria
Prior art keywords
catheter
chamber
chamber balloon
chambers
proximal
Prior art date
Application number
AT06801087T
Other languages
English (en)
Inventor
Kory Thomas
Original Assignee
Boston Scient Ltd Barbados Hom
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Boston Scient Ltd Barbados Hom filed Critical Boston Scient Ltd Barbados Hom
Application granted granted Critical
Publication of ATE457770T1 publication Critical patent/ATE457770T1/de

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/10Balloon catheters
    • A61M25/1002Balloon catheters characterised by balloon shape
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/10Balloon catheters
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/10Balloon catheters
    • A61M25/1011Multiple balloon catheters
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/10Balloon catheters
    • A61M25/1018Balloon inflating or inflation-control devices
    • A61M25/10184Means for controlling or monitoring inflation or deflation
    • A61M25/10185Valves
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/10Balloon catheters
    • A61M2025/1043Balloon catheters with special features or adapted for special applications
    • A61M2025/1059Balloon catheters with special features or adapted for special applications having different inflatable sections mainly depending on the response to the inflation pressure, e.g. due to different material properties
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/10Balloon catheters
    • A61M2025/1043Balloon catheters with special features or adapted for special applications
    • A61M2025/1072Balloon catheters with special features or adapted for special applications having balloons with two or more compartments

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biophysics (AREA)
  • Pulmonology (AREA)
  • Child & Adolescent Psychology (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
AT06801087T 2005-12-07 2006-08-10 Katheter mit verjüngter mehrkammer-balloon ATE457770T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/296,793 US7766893B2 (en) 2005-12-07 2005-12-07 Tapered multi-chamber balloon
PCT/US2006/031125 WO2007067226A1 (en) 2005-12-07 2006-08-10 Tapered multi-chamber balloon

Publications (1)

Publication Number Publication Date
ATE457770T1 true ATE457770T1 (de) 2010-03-15

Family

ID=37398674

Family Applications (1)

Application Number Title Priority Date Filing Date
AT06801087T ATE457770T1 (de) 2005-12-07 2006-08-10 Katheter mit verjüngter mehrkammer-balloon

Country Status (7)

Country Link
US (2) US7766893B2 (de)
EP (1) EP1962938B1 (de)
JP (1) JP2009518114A (de)
AT (1) ATE457770T1 (de)
CA (1) CA2633140A1 (de)
DE (1) DE602006012365D1 (de)
WO (1) WO2007067226A1 (de)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRMU8600250Y8 (pt) * 2006-02-24 2021-06-22 Angiomed Imp E Exportacao Ltda Me disposição construtiva aplicada em cateter balão
US20090054922A1 (en) * 2007-08-23 2009-02-26 Broker Harshal S Apparatus and Method for the Intravascular Control of Trauma
US8718313B2 (en) 2007-11-09 2014-05-06 Personics Holdings, LLC. Electroactive polymer systems
WO2009137423A1 (en) 2008-05-06 2009-11-12 The Cleveland Clinic Foundation Balloon for a body lumen and method of use
EP2353633B1 (de) * 2010-02-09 2016-04-06 Sanofi-Aventis Deutschland GmbH Ballonkatheter zur Postkonditionierung
EP2616006B1 (de) 2010-09-17 2018-08-29 St. Jude Medical, Cardiology Division, Inc. Halterungen für transkatheter-herzklappenfreisetzungssysteme
US20120316460A1 (en) * 2011-06-07 2012-12-13 Stout Christopher A Fluid delivery system with pressure monitoring device
US9480561B2 (en) * 2012-06-26 2016-11-01 St. Jude Medical, Cardiology Division, Inc. Apparatus and method for aortic protection and TAVI planar alignment
US9918837B2 (en) 2012-06-29 2018-03-20 St. Jude Medical, Cardiology Division, Inc. System to assist in the release of a collapsible stent from a delivery device
US11147990B2 (en) * 2013-03-12 2021-10-19 Acoustic Medsystems, Inc. Ultrasound therapy catheter with multi-chambered balloons for transluminal longitudinal positioning
US9839543B2 (en) 2013-03-14 2017-12-12 Cook Medical Technologies Llc Multi-stage balloon catheter
US10208925B2 (en) * 2014-03-11 2019-02-19 Soft Robotics, Inc. Soft conformal laparoscopic instrument
DE102015112390A1 (de) * 2015-07-29 2017-02-02 Bentley Innomed Gmbh Ballonkatheter
JP6864984B2 (ja) * 2015-10-22 2021-04-28 ニプロ株式会社 バルーンおよびバルーンカテーテル
US10426484B1 (en) * 2015-12-28 2019-10-01 Tilo Kölbel Balloon devices and methods for use
EP3454794B1 (de) 2016-05-13 2021-04-14 St. Jude Medical, Cardiology Division, Inc. System zur vorrichtungsimplantation
KR101811768B1 (ko) * 2016-06-13 2017-12-22 주식회사 시브이바이오 약물코팅을 갖춘 풍선 카테터 및 풍선 카테터 제조방법
EP3582846B1 (de) * 2017-02-15 2021-03-31 Tevar (Pty) Ltd Dilatationsvorrichtung
US11185332B2 (en) * 2018-06-21 2021-11-30 Renalpro Medical, Inc. Multi-chambered balloon catheter devices and methods
KR102207630B1 (ko) * 2018-08-29 2021-01-26 계명대학교 산학협력단 막힌 혈관을 용이하게 통과하기 위한 지지풍선이 부착된 카테터, 및 그 이용방법
WO2020072837A1 (en) * 2018-10-03 2020-04-09 Ostial Corporation Inflation devices and systems for balloon catheters and methods for use
WO2020216087A1 (en) * 2019-04-24 2020-10-29 Braxx Biotech Co., Ltd. Apparatus and method for treating gastrointestinal tumors
EP3797817A1 (de) * 2019-09-26 2021-03-31 Kölbel, Tilo Ballonvorrichtungen
US11666744B2 (en) 2020-05-29 2023-06-06 Basis Medical, Llc Multi-lumen manifold and method of operating a multi-lumen manifold
CN115708737B (zh) * 2022-11-23 2023-06-13 广东博迈医疗科技股份有限公司 球囊扩张装置

Family Cites Families (90)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US550238A (en) * 1895-11-26 Horace russel allen
US388510A (en) * 1888-08-28 Vaginal syringe
US3504662A (en) * 1967-05-16 1970-04-07 Avco Corp Intra-arterial blood pump
US4338942A (en) * 1980-10-20 1982-07-13 Fogarty Thomas J Dilatation catherter apparatus
US4581017B1 (en) * 1983-03-07 1994-05-17 Bard Inc C R Catheter systems
US4490421A (en) * 1983-07-05 1984-12-25 E. I. Du Pont De Nemours And Company Balloon and manufacture thereof
US4546759A (en) * 1983-07-29 1985-10-15 Mladen Solar Method and apparatus for assisting human heart function
US4763654A (en) * 1986-09-10 1988-08-16 Jang G David Tandem independently inflatable/deflatable multiple diameter balloon angioplasty catheter systems and method of use
US4744366A (en) * 1986-09-10 1988-05-17 Jang G David Concentric independently inflatable/deflatable multiple diameter balloon angioplasty catheter systems and method of use
US5002532A (en) * 1987-01-06 1991-03-26 Advanced Cardiovascular Systems, Inc. Tandem balloon dilatation catheter
US5250069A (en) * 1987-02-27 1993-10-05 Terumo Kabushiki Kaisha Catheter equipped with expansible member and production method thereof
US4958634A (en) * 1987-05-06 1990-09-25 Jang G David Limacon geometry balloon angioplasty catheter systems and method of making same
DE68917895T2 (de) * 1988-06-06 1995-02-02 Sumitomo Electric Industries Katheter.
US4950239A (en) * 1988-08-09 1990-08-21 Worldwide Medical Plastics Inc. Angioplasty balloons and balloon catheters
US4906244A (en) * 1988-10-04 1990-03-06 Cordis Corporation Balloons for medical devices and fabrication thereof
US5019042A (en) * 1988-11-23 1991-05-28 Harvinder Sahota Balloon catheters
US5176619A (en) * 1989-05-05 1993-01-05 Jacob Segalowitz Heart-assist balloon pump with segmented ventricular balloon
US4994033A (en) * 1989-05-25 1991-02-19 Schneider (Usa) Inc. Intravascular drug delivery dilatation catheter
ES2043289T3 (es) * 1989-09-25 1993-12-16 Schneider Usa Inc La extrusion de capas multiples como procedimiento para hacer balones de angioplastia.
US5264260A (en) * 1991-06-20 1993-11-23 Saab Mark A Dilatation balloon fabricated from low molecular weight polymers
JP3053029B2 (ja) * 1991-10-08 2000-06-19 テルモ株式会社 血管拡張用カテーテルバルーン
US5273536A (en) * 1992-04-02 1993-12-28 Vicky Savas Tapered balloon catheter
DE69311847T2 (de) * 1992-04-06 1997-11-13 Terumo Corp Ballonkatheter
US5415635A (en) * 1992-07-21 1995-05-16 Advanced Cardiovascular Systems, Inc. Balloon assembly with separately inflatable sections
US5304135A (en) * 1992-08-13 1994-04-19 Cordis Corporation Axial multi-chamber angioplasty balloon assembly
US6623516B2 (en) * 1992-08-13 2003-09-23 Mark A. Saab Method for changing the temperature of a selected body region
US5500180A (en) * 1992-09-30 1996-03-19 C. R. Bard, Inc. Method of making a distensible dilatation balloon using a block copolymer
JP3577082B2 (ja) * 1993-10-01 2004-10-13 ボストン・サイエンティフィック・コーポレーション 熱可塑性エラストマーから成る医療装置用バルーン
US5607444A (en) * 1993-12-02 1997-03-04 Advanced Cardiovascular Systems, Inc. Ostial stent for bifurcations
US6120523A (en) * 1994-02-24 2000-09-19 Radiance Medical Systems, Inc. Focalized intraluminal balloons
US6146356A (en) * 1994-03-02 2000-11-14 Scimed Life Systems, Inc. Block copolymer elastomer catheter balloons
JP3494654B2 (ja) * 1994-03-02 2004-02-09 シメッド ライフ システムズ インコーポレイテッド ブロックコポリマーエラストマー・カテーテル・バルーン
US5536252A (en) * 1994-10-28 1996-07-16 Intelliwire, Inc. Angioplasty catheter with multiple coaxial balloons
ATE395014T1 (de) * 1995-03-01 2008-05-15 Boston Scient Scimed Inc Längsflexibler und expandierbarer stent
US6818014B2 (en) * 1995-03-01 2004-11-16 Scimed Life Systems, Inc. Longitudinally flexible expandable stent
US5833657A (en) * 1995-05-30 1998-11-10 Ethicon, Inc. Single-walled balloon catheter with non-linear compliance characteristic
US5865801A (en) * 1995-07-18 1999-02-02 Houser; Russell A. Multiple compartmented balloon catheter with external pressure sensing
US5891057A (en) * 1995-10-04 1999-04-06 Chaisson; Gary A. Carotid artery angioplasty guiding system
US5632762A (en) * 1995-11-09 1997-05-27 Hemodynamics, Inc. Ostial stent balloon
US6235053B1 (en) * 1998-02-02 2001-05-22 G. David Jang Tubular stent consists of chevron-shape expansion struts and contralaterally attached diagonal connectors
US5922021A (en) * 1996-04-26 1999-07-13 Jang; G. David Intravascular stent
US5725535A (en) * 1996-09-20 1998-03-10 Hegde; Anant V. Multiple balloon stent delivery catheter and method
ATE539702T1 (de) * 1996-11-04 2012-01-15 Advanced Stent Tech Inc Vorrichtung zum ausdehnnen eines stents und verfahren zu seiner entfaltung
US6835203B1 (en) * 1996-11-04 2004-12-28 Advanced Stent Technologies, Inc. Extendible stent apparatus
US5749890A (en) * 1996-12-03 1998-05-12 Shaknovich; Alexander Method and system for stent placement in ostial lesions
US6033433A (en) * 1997-04-25 2000-03-07 Scimed Life Systems, Inc. Stent configurations including spirals
WO1999036015A1 (en) 1998-01-16 1999-07-22 Emory University Catheter and method of ostial stent placement
AU2684499A (en) * 1998-02-17 1999-08-30 G. David Jang Tubular stent consists of chevron-shape expansion struts and ipsilaterally attached m-frame connectors
US6423032B2 (en) * 1998-03-13 2002-07-23 Arteria Medical Science, Inc. Apparatus and methods for reducing embolization during treatment of carotid artery disease
US6582396B1 (en) * 1998-05-13 2003-06-24 Arteria Medical Science, Inc. Puncture resistant balloon for use in carotid artery procedures and methods of use
US6261319B1 (en) * 1998-07-08 2001-07-17 Scimed Life Systems, Inc. Stent
US6193744B1 (en) * 1998-09-10 2001-02-27 Scimed Life Systems, Inc. Stent configurations
US6022359A (en) * 1999-01-13 2000-02-08 Frantzen; John J. Stent delivery system featuring a flexible balloon
US7655030B2 (en) * 2003-07-18 2010-02-02 Boston Scientific Scimed, Inc. Catheter balloon systems and methods
EP1152711B1 (de) * 1999-01-27 2005-07-06 Boston Scientific Limited Bifurkationsstenteinführsystem
CA2379670A1 (en) * 1999-08-12 2001-02-22 Wilson-Cook Medical Inc. Dilation balloon having multiple diameters
CA2383297C (en) * 1999-09-23 2010-04-13 Advanced Stent Technologies, Inc. Bifurcation stent system and method
US6270522B1 (en) * 1999-12-21 2001-08-07 Advanced Cardiovascular Systems, Inc. High pressure catheter balloon
AU2002212621A1 (en) * 2000-09-14 2002-03-26 Tuborg Engineering Nv Adaptive balloon with improved flexibility
US20030109909A1 (en) * 2000-12-29 2003-06-12 Ledesma Michelle N. Tapered vessel radiotherapy
US6527739B1 (en) * 2000-12-29 2003-03-04 Advanced Cardiovascular Systems, Inc. Spiraled balloon arrangement for treatment of a tortuous vessel
US20030097169A1 (en) * 2001-02-26 2003-05-22 Brucker Gregory G. Bifurcated stent and delivery system
WO2002067815A1 (en) * 2001-02-26 2002-09-06 Scimed Life Systems, Inc. Bifurcated stent
WO2002067816A1 (en) * 2001-02-26 2002-09-06 Scimed Life Systems, Inc. Bifurcated stent and delivery system
US6524302B2 (en) * 2001-04-26 2003-02-25 Scimed Life Systems, Inc. Multi-lumen catheter
US6796960B2 (en) * 2001-05-04 2004-09-28 Wit Ip Corporation Low thermal resistance elastic sleeves for medical device balloons
US6746465B2 (en) * 2001-12-14 2004-06-08 The Regents Of The University Of California Catheter based balloon for therapy modification and positioning of tissue
US6761734B2 (en) * 2002-07-22 2004-07-13 William S. Suhr Segmented balloon catheter for stenting bifurcation lesions
US6808524B2 (en) * 2002-09-16 2004-10-26 Prorhythm, Inc. Balloon alignment and collapsing system
US7326242B2 (en) * 2002-11-05 2008-02-05 Boston Scientific Scimed, Inc. Asymmetric bifurcated crown
US7314480B2 (en) * 2003-02-27 2008-01-01 Boston Scientific Scimed, Inc. Rotating balloon expandable sheath bifurcation delivery
US8109987B2 (en) * 2003-04-14 2012-02-07 Tryton Medical, Inc. Method of treating a lumenal bifurcation
US7744620B2 (en) * 2003-07-18 2010-06-29 Intervalve, Inc. Valvuloplasty catheter
US20050049680A1 (en) 2003-09-03 2005-03-03 Fischell Tim A. Side branch stent with split proximal end
US20080208307A1 (en) 2003-11-03 2008-08-28 B-Balloon Ltd. Treatment of Vascular Bifurcations
US7686841B2 (en) * 2003-12-29 2010-03-30 Boston Scientific Scimed, Inc. Rotating balloon expandable sheath bifurcation delivery system
US7922753B2 (en) * 2004-01-13 2011-04-12 Boston Scientific Scimed, Inc. Bifurcated stent delivery system
US20070038283A1 (en) * 2004-02-06 2007-02-15 Mustapha Jihad A Ostial stent and balloon
US20050177221A1 (en) * 2004-02-06 2005-08-11 Mustapha Jihad A. Ostial stent
US20070250104A1 (en) 2004-03-08 2007-10-25 Medilator Catheter and Method for Dilating a Body Passageway
US20050234499A1 (en) * 2004-04-19 2005-10-20 Scimed Life Systems, Inc. Multi-lumen balloon catheter including manifold
US20060064064A1 (en) * 2004-09-17 2006-03-23 Jang G D Two-step/dual-diameter balloon angioplasty catheter for bifurcation and side-branch vascular anatomy
AU2006213489A1 (en) 2005-02-08 2006-08-17 B-Balloon Ltd. Devices and methods for treatment of vascular bifurcations
US7862601B2 (en) * 2005-05-23 2011-01-04 Incept Llc Apparatus and methods for delivering a stent into an ostium
US7485140B2 (en) * 2005-06-17 2009-02-03 Boston Scientific Scimed, Inc. Bifurcation stent assembly
US8702777B2 (en) * 2005-08-22 2014-04-22 Incept, Llc Steep-taper flared stents and apparatus and methods for delivering them
US20070050016A1 (en) * 2005-08-29 2007-03-01 Boston Scientific Scimed, Inc. Stent with expanding side branch geometry
US20070208411A1 (en) * 2006-03-06 2007-09-06 Boston Scientific Scimed, Inc. Bifurcated stent with surface area gradient
US8398695B2 (en) 2006-11-03 2013-03-19 Boston Scientific Scimed, Inc. Side branch stenting system using a main vessel constraining side branch access balloon and side branching stent
US8414611B2 (en) 2006-11-03 2013-04-09 Boston Scientific Scimed, Inc. Main vessel constraining side-branch access balloon

Also Published As

Publication number Publication date
EP1962938A1 (de) 2008-09-03
US20070129749A1 (en) 2007-06-07
US8142395B2 (en) 2012-03-27
WO2007067226A1 (en) 2007-06-14
DE602006012365D1 (de) 2010-04-01
JP2009518114A (ja) 2009-05-07
EP1962938B1 (de) 2010-02-17
CA2633140A1 (en) 2007-06-14
US7766893B2 (en) 2010-08-03
US20100298860A1 (en) 2010-11-25

Similar Documents

Publication Publication Date Title
DE602006012365D1 (de) Katheter mit verjüngter Mehrkammer-Balloon
WO2009076215A3 (en) Agent delivery catheter having an inflation bridge between two axially spaced balloons
WO2006083578A8 (en) Triple-profile balloon catheter
WO2008045308A3 (en) Balloon catheter with manually operated valve and aspirator
ATE506100T1 (de) Katheterschaft mit distaler stütze
WO2007054364A3 (en) Balloon catheter with elastic segment
WO2009086099A3 (en) Catheter having a core wire and low profile bond
EP4541406A3 (de) Ballonkatheter
WO2014151283A3 (en) Length adjustable balloon catheter for multiple indications
ATE401926T1 (de) Katheteranordnung
WO2008057839A3 (en) Catheter with adjustable column stability and methods for its use
WO2013134688A3 (en) Medical balloon with radiopaque identifier for precisely identifying the working surface
DE602005023780D1 (de) Ballon mit abgestuften abschnitten und hilfsmitteln
WO2007123921A3 (en) Devices for intravascular drug delivery
EP2119468B8 (de) Katheter mit Ventil
WO2005056078A3 (en) Facilitated balloon catheter exchange
WO2005051224A3 (en) Stent positioning using inflation tube
WO2014106226A3 (en) Balloon catheter with adjustable inner member
WO2006002192A3 (en) Triple lumen catheter with occlusion resistant tip
MX2014002139A (es) Cateter que tiene una caracteristica divisible activada por presion.
WO2019070392A3 (en) Drainage catheter with balloon
EP4029556A3 (de) Intravaskulärer ballon mit verschiebbarem zentralem bewässerungsrohr
WO2008147842A3 (en) Catheter with variable attachment means
RU2011107550A (ru) Гемостатический катетер гк-1 и способ его использования
DE602006009545D1 (de) Schnell austauschbarer ballonkatheter und herstellungsverfahren dafür

Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties