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FR2442713A1 - Structure poreuse de polytetrafluorethylene et procede pour sa preparation - Google Patents

Structure poreuse de polytetrafluorethylene et procede pour sa preparation

Info

Publication number
FR2442713A1
FR2442713A1 FR7929579A FR7929579A FR2442713A1 FR 2442713 A1 FR2442713 A1 FR 2442713A1 FR 7929579 A FR7929579 A FR 7929579A FR 7929579 A FR7929579 A FR 7929579A FR 2442713 A1 FR2442713 A1 FR 2442713A1
Authority
FR
France
Prior art keywords
face
preparation
stretching
porous
fibers
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
Application number
FR7929579A
Other languages
English (en)
Other versions
FR2442713B1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
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
Priority claimed from JP53148928A external-priority patent/JPS581656B2/ja
Priority claimed from JP53148929A external-priority patent/JPS6037736B2/ja
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Publication of FR2442713A1 publication Critical patent/FR2442713A1/fr
Application granted granted Critical
Publication of FR2442713B1 publication Critical patent/FR2442713B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
    • A61F2/06—Blood vessels
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/14—Macromolecular materials
    • A61L27/16—Macromolecular materials obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
    • A61L29/04—Macromolecular materials
    • A61L29/041—Macromolecular materials obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
    • A61L29/14—Materials characterised by their function or physical properties, e.g. lubricating compositions
    • A61L29/146—Porous materials, e.g. foams or sponges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/06—Rod-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/005—Shaping by stretching, e.g. drawing through a die; Apparatus therefor characterised by the choice of materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08J2327/18—Homopolymers or copolymers of tetrafluoroethylene

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Epidemiology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Transplantation (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Biomedical Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Pulmonology (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Manufacturing & Machinery (AREA)
  • Cardiology (AREA)
  • Polymers & Plastics (AREA)
  • Dermatology (AREA)
  • Materials Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Prostheses (AREA)
  • Materials For Medical Uses (AREA)

Abstract

Structure poreuse de polytétrafluoréthylène à structure microfibreuse constituée de fibres et de noeuds reliés entre eux par ces fibres, et sa préparation. Une face de la structure microfibreuse est fortement orientée dans une direction et l'autre face est fortement orientée dans une direction perpendiculaire, avec variation progressive de l'orientation d'une face à l'autre. On prépare cette structure qui peut consister en un tube par étirage de l'article de polytétrafluoréthylène dans une direction, chauffage de l'article à une température supérieure à 327 degrés C environ en empêchant la rétraction, et frittage qui conduit à une orientation plus forte dans une direction perpendiculaire à la direction d'étirage que dans la direction d'étirage. Un tube poreux selon l'invention peut être utilisé avantageusement comme prothèse vasculaire.
FR7929579A 1978-11-30 1979-11-30 Structure poreuse de polytetrafluorethylene et procede pour sa preparation Granted FR2442713A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP53148928A JPS581656B2 (ja) 1978-11-30 1978-11-30 ポリテトラフルオロエチレン多孔質体及びその製造方法
JP53148929A JPS6037736B2 (ja) 1978-11-30 1978-11-30 管状臓器補綴材

Publications (2)

Publication Number Publication Date
FR2442713A1 true FR2442713A1 (fr) 1980-06-27
FR2442713B1 FR2442713B1 (fr) 1982-11-19

Family

ID=26478971

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7929579A Granted FR2442713A1 (fr) 1978-11-30 1979-11-30 Structure poreuse de polytetrafluorethylene et procede pour sa preparation

Country Status (9)

Country Link
US (1) US4332035A (fr)
AU (1) AU521190B2 (fr)
CA (1) CA1147109A (fr)
DE (1) DE2947743C2 (fr)
FR (1) FR2442713A1 (fr)
GB (1) GB2037294B (fr)
IT (1) IT1120048B (fr)
NL (1) NL179352C (fr)
SE (1) SE435151B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990005490A1 (fr) * 1988-11-17 1990-05-31 Brown University Research Foundation Canaux de guidage a charge electrique pour nerfs
US5030225A (en) * 1987-03-13 1991-07-09 Brown University Research Foundation Electrically-charged nerve guidance channels
WO1995010247A1 (fr) * 1993-10-08 1995-04-20 Impra, Inc. Greffon vasculaire renforce et son procede de fabrication

Families Citing this family (83)

* Cited by examiner, † Cited by third party
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US4713070A (en) * 1978-11-30 1987-12-15 Sumitom Electric Industries, Ltd. Porous structure of polytetrafluoroethylene and process for production thereof
US5258040A (en) * 1982-09-10 1993-11-02 W. L. Gore & Associates Prosthesis for tensile load-carrying tissue and method of manufacture
US5049155A (en) * 1982-09-10 1991-09-17 W. L. Gore & Associates, Inc. Prosthesis for tensile-load-carrying tissue and method of manufacture
FI78393C (fi) * 1982-09-10 1989-08-10 Gore & Ass Syntetiskt protes foer ersaettning eller reparation av ligament eller senor.
DE3425027A1 (de) * 1983-07-08 1985-01-17 Sumitomo Electric Industries, Ltd., Osaka Fluorharz-filter
US4647416A (en) * 1983-08-03 1987-03-03 Shiley Incorporated Method of preparing a vascular graft prosthesis
US4550447A (en) * 1983-08-03 1985-11-05 Shiley Incorporated Vascular graft prosthesis
JPS61293450A (ja) * 1985-05-27 1986-12-24 城　靖 人工血管
CA1292597C (fr) * 1985-12-24 1991-12-03 Koichi Okita Prothese tubulaire a structure composite
JPS62152470A (ja) * 1985-12-24 1987-07-07 住友電気工業株式会社 管状臓器補綴材
US4767418A (en) * 1986-02-13 1988-08-30 California Institute Of Technology Luminal surface fabrication for cardiovascular prostheses
JPS62279920A (ja) * 1986-05-28 1987-12-04 Daikin Ind Ltd 多孔質熱収縮性テトラフルオロエチレン重合体管及びその製造方法
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US10376360B2 (en) 2012-07-27 2019-08-13 W. L. Gore & Associates, Inc. Multi-frame prosthetic valve apparatus and methods
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US9101469B2 (en) 2012-12-19 2015-08-11 W. L. Gore & Associates, Inc. Prosthetic heart valve with leaflet shelving
US10966820B2 (en) 2012-12-19 2021-04-06 W. L. Gore & Associates, Inc. Geometric control of bending character in prosthetic heart valve leaflets
US10279084B2 (en) 2012-12-19 2019-05-07 W. L. Gore & Associates, Inc. Medical balloon devices and methods
US9968443B2 (en) 2012-12-19 2018-05-15 W. L. Gore & Associates, Inc. Vertical coaptation zone in a planar portion of prosthetic heart valve leaflet
US10842918B2 (en) 2013-12-05 2020-11-24 W.L. Gore & Associates, Inc. Length extensible implantable device and methods for making such devices
US9827094B2 (en) 2014-09-15 2017-11-28 W. L. Gore & Associates, Inc. Prosthetic heart valve with retention elements
WO2017184153A1 (fr) 2016-04-21 2017-10-26 W. L. Gore & Associates, Inc. Endoprothèses diamétralement réglables, systèmes et procédés associés
JP6974601B2 (ja) 2017-09-12 2021-12-01 ダブリュ.エル.ゴア アンド アソシエイツ, インコーポレイティドW.L. Gore & Associates, Incorporated 人工弁のためのリーフレットフレーム取り付け装置
JP7068444B2 (ja) 2017-09-27 2022-05-16 ダブリュ．エル．ゴア アンド アソシエイツ，インコーポレイティド 拡張可能なフレームを備えた人工弁、並びに関連するシステム及び方法
CA3072781C (fr) 2017-09-27 2022-07-05 W.L. Gore & Associates, Inc. Valves prothetiques a lames valvulaires mecaniquement accouplees
AU2018347852B2 (en) 2017-10-13 2021-08-19 Edwards Lifesciences Corporation Telescoping prosthetic valve and delivery system
CN111295156B (zh) 2017-10-31 2022-05-27 W.L.戈尔及同仁股份有限公司 假体心脏瓣膜
CA3205219A1 (fr) 2017-10-31 2019-05-09 Edwards Lifesciences Corporation Valve medicale et feuillet favorisant l'interposition tissulaire
US11497601B2 (en) 2019-03-01 2022-11-15 W. L. Gore & Associates, Inc. Telescoping prosthetic valve with retention element

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FR2222200A1 (fr) * 1973-03-19 1974-10-18 Sumitomo Electric Industries
FR2265345A1 (fr) * 1974-04-02 1975-10-24 Gore & Ass
FR2336622A1 (fr) * 1975-12-24 1977-07-22 Sumitomo Electric Industries Tubulures en polytetrafluoroethylene poreux, et leur procede de preparation
FR2363351A1 (fr) * 1976-09-03 1978-03-31 Sumitomo Electric Industries Procede pour produire des pellicules poreuses asymetriques et produits de ce procede
FR2364107A1 (fr) * 1976-09-13 1978-04-07 Sumitomo Electric Industries Tubes microporeux et procede de fabrication de tels tubes

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FR2265345A1 (fr) * 1974-04-02 1975-10-24 Gore & Ass
FR2336622A1 (fr) * 1975-12-24 1977-07-22 Sumitomo Electric Industries Tubulures en polytetrafluoroethylene poreux, et leur procede de preparation
FR2363351A1 (fr) * 1976-09-03 1978-03-31 Sumitomo Electric Industries Procede pour produire des pellicules poreuses asymetriques et produits de ce procede
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WO1990005490A1 (fr) * 1988-11-17 1990-05-31 Brown University Research Foundation Canaux de guidage a charge electrique pour nerfs
WO1995010247A1 (fr) * 1993-10-08 1995-04-20 Impra, Inc. Greffon vasculaire renforce et son procede de fabrication

Also Published As

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DE2947743A1 (de) 1980-06-04
US4332035A (en) 1982-06-01
NL179352B (nl) 1986-04-01
AU521190B2 (en) 1982-03-18
SE435151B (sv) 1984-09-10
DE2947743C2 (de) 1983-12-08
IT1120048B (it) 1986-03-19
GB2037294A (en) 1980-07-09
IT7950927A0 (it) 1979-11-28
CA1147109A (fr) 1983-05-31
NL7908646A (nl) 1980-06-03
GB2037294B (en) 1983-05-25
FR2442713B1 (fr) 1982-11-19
NL179352C (nl) 1986-09-01
AU5327379A (en) 1980-06-05
SE7909867L (sv) 1980-05-31

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