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JPH04126161A - フィルターカテーテル - Google Patents

フィルターカテーテル

Info

Publication number
JPH04126161A
JPH04126161A JP2415729A JP41572990A JPH04126161A JP H04126161 A JPH04126161 A JP H04126161A JP 2415729 A JP2415729 A JP 2415729A JP 41572990 A JP41572990 A JP 41572990A JP H04126161 A JPH04126161 A JP H04126161A
Authority
JP
Japan
Prior art keywords
conduit
tubular body
filter
filter catheter
distal end
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
JP2415729A
Other languages
English (en)
Other versions
JP3143478B2 (ja
Inventor
Jean-Marie Lefebvre
ジャン・マリー　ルフェブル
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.)
Individual
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9388968&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JPH04126161(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of JPH04126161A publication Critical patent/JPH04126161A/ja
Application granted granted Critical
Publication of JP3143478B2 publication Critical patent/JP3143478B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • 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
    • A61F2/01—Filters implantable into blood vessels
    • A61F2/0108—Both ends closed, i.e. legs gathered at both ends
    • 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
    • A61F2/01—Filters implantable into blood vessels
    • A61F2/011—Instruments for their placement or removal
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
    • A61M25/0082—Catheter tip comprising a tool
    • 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
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • B29C61/06—Making preforms having internal stresses, e.g. plastic memory
    • B29C61/0608—Making preforms having internal stresses, e.g. plastic memory characterised by the configuration or structure of the preforms
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/118—Single monotone curved joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5324—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length
    • B29C66/53241—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being tubular and said substantially annular single elements being of finite length relative to the infinite length of said tubular articles
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/61—Joining from or joining on the inside
    • B29C66/612—Making circumferential joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • 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
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/02—Thermal after-treatment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/22—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
    • A61B2017/22038—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for with a guide wire
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • 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
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
    • A61F2002/3006—Properties of materials and coating materials
    • A61F2002/3008—Properties of materials and coating materials radio-opaque, e.g. radio-opaque markers
    • 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
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
    • A61F2002/3006—Properties of materials and coating materials
    • A61F2002/30092—Properties of materials and coating materials using shape memory or superelastic materials, e.g. nitinol
    • 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
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108—Shapes
    • A61F2002/30199—Three-dimensional shapes
    • A61F2002/30289—Three-dimensional shapes helically-coiled
    • 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
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • A61F2002/30354—Cylindrically-shaped protrusion and recess, e.g. cylinder of circular basis
    • 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
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • A61F2002/30362—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess
    • A61F2002/3037—Translation along the common longitudinal axis, e.g. piston
    • 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
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30451—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements soldered or brazed or welded
    • 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
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30589—Sealing means
    • 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
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30617—Visible markings for adjusting, locating or measuring
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Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Vascular Medicine (AREA)
  • Transplantation (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Cardiology (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Biophysics (AREA)
  • Pulmonology (AREA)
  • Anesthesiology (AREA)
  • Hematology (AREA)
  • Surgical Instruments (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • External Artificial Organs (AREA)
  • Materials For Medical Uses (AREA)
  • Filtering Materials (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】
［発明の目的］ ［０００１］
【産業上の利用分野】
本発明は静脈内を循環する血栓を止めるに適合する医用
のフィルター並びに静脈内にフィルターを導入するため
のカテーテルに関し、特に−時的に使用されるフィルタ
ー、即ち患者に対して施された治療が満足なものと判断
されフィルターを存在させることがもはや必要ないと判
定された場合に静脈から引き出せるフィルターカテーテ
ルに関する。 ［０００２］
【従来の技術】
このような−時的なフィルターは、特に特許ＦＲ−Ａ−
２５８０５０４により知られている。これらは導入のた
めにカテーテルの末端に固定されている。これらの構造
は、静脈内への導入中は濾過を保証するエレメントがカ
テーテルを延長するシース内に折り曲げられ、且つフィ
ルターが静脈内に置かれた時は、遠隔制御手段によって
上記濾過エレメントが広げられるようになっている。 ［０００３］ ＦＲ−Ａ−２５８０５０４のフィルターに於いて、濾過
手段は複数の脚から成り、それらは静止時には円筒の母
線に沿って相互にほぼ並行に延在している。また、これ
らを広げる手段は、フィルター脚によって規定された上
記円筒の内側に設けられた可逆的な拡張手段である。変
形することにより、拡張手段は、少くともその末端領域
に於いて、静脈壁に対して加えるに十分な強さで脚を内
側から押し出して、傘のスポークの様にして脚を広げる
。 ［０００４］ これらの公知のフィルターは２つの欠点を有する。一つ
には、これらは、カテーテルの末端に配置され、且つフ
ィルターが静脈内で広げられている時に引き出せるよう
になっている濾過膜を保護する捕捉的なシースを必要と
することである［０００５］ 他方には、これらが濾過エレメントを広げるための捕捉
的な複雑な拡張手段を必要とすることである。この拡張
手段としては、可逆的に遠隔制御が可能なものである必
要があり、例えば適当な流体を供給する導管を有し、ふ
くらますことができるバルーンを要する。 ［０００６］ これはフィルター及びカテーテル組立体の構造を複雑で
微細なものにしている［０００７］ 以上で明らかにされた欠点を克服すめために、文献ＦＲ
−Ａ−２６０６６４２は、カテーテルの末端に設けられ
且つフレキシブルな複数の脚から成る濾過エレメントを
提案している。ここで、これらのフレキシブルな脚の向
かい合う端は、相対位置を修正する手段によって互いに
結合された２つの部材間に置かれる。その結果、縦軸に
沿った２つの部材の接近により、フレキシブルな脚の横
断的な拡張が起ることになる。 ［０００８］ 文献ＦＲ−Ａ−２６０６６４２に於いて挙げられた実施
例ではフレキシブルな脚はカテーテルの末端部を構成す
る管状体を切り出すことにより得られる。ここで、この
末端部は、管状体の内側を縦方向にスライドすることが
できる内部導管に固定される。 ［０００９］ この実施例は特に単純である。しかしながら、このよう
なフィルターカテーテルが静脈内に存在すると、フィル
ターの直ぐ近くに局在した血栓を生じさせる可能性のあ
ることが出願人により認められた。 ［００１０］
【発明が解決しようとする課題】
本発明は前記欠点を克服するタイプのフィルターカテー
テルを提案することを目的としている。 ［００１１］ ［発明の構成］ ［００１２］
【課題を解決するための手段】
本発明は（１）静脈を部分的かつ少くとも一時的にさえ
ぎるために、末端方向に周囲にかけて対称的に分布され
且つフレキシブルな複数の帯状体を規定する複数の縦の
刻み目をつれる管状体と、 管状体の内側の導管及び管状体をそれらの末端付近で堅
く結合され管状体及び内部の導管を４弗化エチレン製と
するフィルターカテーテル。 ［００１３］ （２）管状体及び導管の末端が熱溶接されるフィルター
カテーテル。 ［００１４］ （３）管状体及び導管の末端間に含められ且つそれらに
熱溶接により固定された放射線の不透過材料製のリング
から構成されて成るフィルターカテーテル。 ［００１５］ （４）管状体の末端は導管の内側の方へ折り曲げられ、
一方ではリングを、他方では導管の末端を被覆するフィ
ルターカテーテル。 ［００１６］ （５）内部導管の末端は、金属リングより外方にフレア
ーにされているフィルターカテーテル。 ［００１７］ （６）導管が帯状体の向かい側に位置する領域において
オリフィスから構成されて成るフィルターカテーテル。 ［００１８］ （７）フィルターの末端部は熱硬化処理を受け、フレキ
シブルな帯状体は変形に対する抵抗が改善されているフ
ィルターカテーテル。 ［００１９］ （８）適状体が広げられた状態で熱硬化処理が行なわれ
、フレキシブルな帯状体を構成する４弗化エチレンが広
げられた状態を記憶するフィルターカテーテル［００２
０］ （９）帯状体が螺旋状によじられている間に熱硬化処理
が行なわれ、フレキシブルな帯状体を構成する４弗化エ
チレンが螺旋形状を記憶するフィルター力テーチルであ
る。 ［００２１］
【作用】
本発明は静脈を部分的且つ少くとも一時的にさえぎるフ
ィルターに関するもので、４弗化エチレン製の管状体と
、この管状体内の４弗化エチレン製の導管から構成され
、この管状体にはその末端方向に、周囲にかけて対称的
に分布され、且つフレキシブルな複数の帯状体を規定す
る複数の縦方向の刻み目がつけられ、管状体と導管はそ
れらの末端付近で、例えば熱溶接によって接合され、好
ましくは、放射線の不透過材料からなるリングが熱溶接
中に、それらの末端間に含められ、 フレキシブルな帯状体は、管状体内をスライドする導管
によって横断的に広げられ、これらは、熱硬化処理を受
け、４弗化エチレンの重合体構造中にその広げられた形
、又は螺旋形を記憶する。 ［００２２］
【実施例】
本発明は末端方向に、周囲にかけて対称に分布され且つ
フレキシブルな複数の帯状体を規定する縦方向の刻み目
をつける管状体と、この管状体の内側で且つその末端付
近で管状体に固定された導管とから成り、部分的且つ少
くとも一時的に静脈をさえぎるフィルターによって完壁
に十分達成され、管状体及び内部導管は両方共４弗化エ
チレン（ポリテトラフルオロエチレン）製であり、 ４弗化エチレンがほんの僅かしか血栓を生じない材料で
あり、この材料がその周囲に予め切り出されたフレキシ
ブルな複数の帯状体の横断的な拡張を生じせしめるため
証明された十分なフレキシビリティを与えるものとして
選択されている［００２３］ 本発明によるフィルターカテーテルは、好ましくは、そ
の末端方向に血流と接触する、まさしく４弗化エチレン
に他ならない材料から成っており、その場合、管状体及
び内部導管は熱溶接により接合される。 ［００２４］ しかしながら、静脈の内側にカテーテルを貫通して置く
ことができることが望ましく、その目的のために、濾過
エレメントの近くに放射線が不透過なエレメントを設け
られ、本ケースに於いては、フィルターカテーテルは、
管状体と内部導管の間に含められ且つ熱溶接中にそれら
に固定される放射線が不透過な材料、例えば金で作られ
たリングから構成され、このように、放射線が不透過な
エレメントは目に見ることはできないし、且つ静脈壁に
引っかかったり、血栓を形成する原因には成り得ない。 ［００２５］ 前フレキシブルな４弗化エチレンの帯状体は、静脈内で
長時間経過後、横断的に広げられ、フィルター組立体の
固有の重量により変形を受けたことが認められこのよう
な変形は、最も下方の帯状体の離間の増大、従って、フ
ィルターがつぶれるという形で現われ、それは、静脈の
横断面に於ける複数の帯状体の不均一な分布を引き起こ
すと共に、特に特定の帯状体の周りに血栓を生じさせる
血流の乱れ現象を起こすものである。 ［００２６］ この欠点を克服するために、本発明によればフィルター
カテーテルの少くとも末端は予め熱硬化処理を受けるが
、この目的は、４弗化エチレンのフレキシブルな帯状体
の機械的な変形に対する抵抗を強めることにあり、この
熱硬化処理は、例えば電子レンジで４〜５分ベーキング
することにより行うことが可能であり、この熱硬化の間
、上記フレキシブルな帯状体は、好ましくは、それらの
広げられた状態に置かれ、このようにして、上記４弗化
エチレンは、その重合体構造内にこの広げられた状態を
記憶するある種の焼きを入れられる。別の改良によれば
、管状体は刻み目の上流で保持され、かつ刻み目の下流
ではフレキシブルな帯状体によじれた形を付与するため
に管状体は自転され、その後、この形状でフィルターカ
テーテルの末端部に対し熱処理が行われ、フレキシブル
な帯状体は静止又は広げられた状態になり、この場合、
フィルターカテーテルの使用中に、フレキシブルな帯状
体は自然に再び螺旋形をとることになる。 ［００２７］ 特開平４−１２ｅｘ６１（８） 次に図面について説明する。本発明のフィルターカテー
テル（よ、本質的Ｇこ、中空の管状体２と、この管状体
２の内側に同軸的に設置される中空の導管３カ・ら構成
されている。これらの２つのエレメント、即ち管状体２
及び導管３（よ４弗化エチレン（ポリテトラフルオロエ
チレン）製である。 ［００２８］ 本実施例に於いて、「基部」および「末端」とＸＪ）う
用語は、フイルターカ（導入される患者の人体の部分を
引用して用いられてν）る。フィルター１の末端（よ、
即ち、図１及び図２において右側に示きれた人体の上記
部分から最も離れた端であり、また基部端は近い端であ
る。 ［００２９］ 管状体２及び導管３の末端２ａ、３ａは、それぞれ互い
に熱溶接され、ステンレス鋼、白金もしくは金製の金属
リング４の周りにある。 ［００３０］ このリング４は、放射線を透過しない材料で製作されて
おり、上記フィルターの位置決め巾検出可能である。 ［００３１］ 図１及び図２に於いて明確に示されている通り、リング
４は管状体２と導管３の末端３ａの間に設置される。上
記管状体の末端２ａは導管３の内側に曲げられて、上記
導管の末端３ａを被覆している。これらのエレメントは
、フィルターカテーテルの端１５を形成するように互い
に熱溶接されている。 ［００３２］ 図４に図解された別の実施例によれば、内部導管３の末
端３ａは金属リング４から突出して外方へフレアーにさ
れ、管状体２の末端２ａと接触する状態で熱溶接が行わ
れる。 ［００３３］ 末端２ａの上流において、管状体２は、３０ｍｍの長さ
ｄにわたり縦方向につくられた６つの刻み目５から成っ
ている。これらの刻み目５は６個の同一帯状体６を規定
しており、管状体２の６０°角のスペースを占めている
。直径３ｍｍの管状体２の場合、各帯状体６は約１．５
ｍｍの幅を有する。 ［００３４］ 導管３は中空で、中央の管路７から成っており、そこに
おいてフィルターカテーテルの導入中案内ロッドとして
作用する金属ロッド８が自由にスライドすることができ
る。 ［００３５］ 基部端の方向で、患者の人体の外側ではあるが、管状体
２は維持及び供給のための装置９に固定されている。こ
の装置９は円筒管１０とエンドリング１１．１２から構
成されている。第１の環状リング１１は管状体２の基部
端を円筒管１０の前部に接合している。第２のリング１
２は導管３を囲むと共に円筒管１０の後部に近接する。 ひじ形部１３は、円筒管１０本体において、斜めに開は
広げられている。 ［００３６］ 導管３の基部端３ｂは円筒管１０から延在している。リ
ング１２はこの末端３ｂを密封するように囲んでいる。 しかしながら、導管３は、円筒管１０に対してリング１
２内を縦に、従って管状体２へ滑ることができる。 ［００３７］ ブロック用リング１４は、導管３をリング１２に対して
閉止している。 ［００３８］ 円筒管１０は、患者の近くで、知られた方法によりフレ
ームに固定される。このフレームは注入される（生産）
物質を供給する２つのシステムを支持するもので、先ず
第１に上記導管の基部端３ｂにおいて、また第２に円筒
管１０のひじ形部１３において開けられている。 ［００３９］ 上記フィルターカテーテルは以下の条件下で働く。 ［００４０］ 第１の段階において、案内ロッド８は、その末端８ａが
患者の悪い大静脈内の位置になるまで、適当な静脈内へ
経皮的な経路で導入される。 ［００４１］ 第２の段階において、フィルターが植設されるべき大静
脈の位置にリング４がくるまで、フィルターカテーテル
１は患者の人体の外側から案内ロッド８に沿ってスライ
ドされる。この第２段階が実行される間、帯状体６は静
止状態、即ち管状体と並びとなる。 ［００４２］ 図２で図解され且つ上記フィルターの開は広がりに対応
する第３の段階において、導管３をリング１２内でスラ
イドさせるようにブロック用リング１４が解放される。 導管３の基部端３ｂは、その後矢印Ｆの方向へ後方に用
心しながら変位させられる。この段階において、導管３
は全体として、その末端と固定されたリング４と同様に
移動する。円筒管１０、従って管状体２の位置が保持さ
れていると、フレキシブルな帯状体６が存在することの
みにより、矢印Ｆ方向にリング４が戻ることができる。 各帯状体６は個々に折り曲がり、その結果刻み目５の領
域において上記管状体の均一な横断的な変形が生じる。 ［００４３］ 広げられた位置において帯状体６の中央部分が静脈の内
壁で湾曲りを示すように、帯状体６の変位量及び長さが
選択される。 ［００４４］ 一旦上記フイルターが正しく広げられると、ブロック用
リング１４は管状体２に対する導管３の変位を防止する
ために固く締められ、それにより帯状体６を横断的な変
形状態に維持することになる。 ［００４５］ 平面りに沿った断面である図３において明白なように、
６個の帯状体６は管状体２に対して横断的に広げられ、
部分的に静脈１８の内部をふさぐ。このようにして、血
が自由に循環する一方、静脈１８の内側を移動する血栓
は帯状体６によって阻止される。 ［００４６］ フィルターカテーテルを使用する前に、後者は熱硬化処
理を受けた。この処理は、フレキシブルな帯状体６が図
２において示されたように広げられた状態にある間に、
上記フィルターの末端に熱衝撃を与えることにある。こ
の処理時間及び温度は、上記帯状体がとった形状が、あ
る程度４弗化エチレンの重合体構造において記憶される
ように決定される。この処理は、上記帯状体の変形に対
する抵抗を強め、静脈１８の内側のフィルターがつぶれ
たり、静脈内の帯状体６の不均一な配置によって血流に
おいて生じる乱れに起因する血栓の危険を避けるもので
ある。 ［００４７］ 図５に示された熱硬化処理の別の実施例によれば、フレ
キシブルな帯状体６がよじれた形をとる間に、熱処理が
フィルターカテーテルの末端に適用される。その目的の
ため、フィルターカテーテルの末端部を硬直させるよう
に心棒１９が内部導管３にはめ込まれる。管状体２の末
端２ａは保持用の支持体２１の前脚２０の位置でとめら
れる。管状体２は自転を受けることになり、それはフレ
キシブルな帯状体６に図５に示すよじれた形状を付与す
る。 ［００４８］ そ、の後、管状体２は支持体２１の後脚２２内のフレキ
シブルな帯状体６の上流位置でとめられる。支持体２１
及びフィルターカテーテルの末端部はベーキング用オー
ブン、例えば電子レンジ内に置かれ、４〜５分の熱処理
を受けることになる。フィルターの使用中、フレキシブ
ルな帯状体６は熱処理の間に与えられた螺旋形をとる傾
向にある。もちろん、支持体２１上で、帯状体６は、図
５に示されたような静止位置、あるいは広げられた状態
をとることができる。 ［００４９］ 治療用の（生産）物質が導管３の基部端３ｂより導管３
を通って上記フィルターの上流で注入することができる
。これは、ヘパリン型または線維素を分解する反凝固剤
である。導管３は、帯状体６の反対領域で、例えば螺旋
状に配置されたオリフィスから構成することができる。 このようにして、導管３内へ導入された治療用の物質は
、上記フィルターの上流で且つそのフィルター自体の水
準に配分することができる。 ［００５０］ 治療用の同様な物質、あるいは可能な別の物質を円筒管
１０のひじ形部１３がら管状体２を通じて上記フィルタ
ーの直接下流の領域に注入することができる。 ［００５１］ −旦、処置が満足なものと判断されると、上記フィルタ
ーは次のよ“うにして引き出される。 ［００５２］ 即ち、帯状体６が、静止状態で、直線状でかつ互いに並
行な位置を再びとり始める迄、ブロック用リング１４が
解放されるとともに、矢印Ｆと反対の方向に導管３の基
部端３ｂが押される。リング１４はその後再び固く締め
つけられ、導管３／管状体２組立体が静脈から引き出さ
れる。 ［００５３］ 本発明によるフィルターカテーテルについて試験したと
ころ、静脈内にフィルターが存在することに起因した血
栓の形成がないことを認めることができた。 ［００５４］ 本発明は、限定でない例として述べられた上記実施例に
限らず、その種々な変形例の全てに及ぶものである。特
に、案内ロッド８が、中空でかつフィルターの下流でフ
ィルターカテーテル１の末端よりずっと先まで治療用物
質を注入するようにしても良い。 ［００５５］
【発明の効果】
本発明により静脈内にフィルターが存在することに起因
した血栓の形成が生じないフィルターカテーテルを提供
することができる。
【図面の簡単な説明】
【図１】 本発明の一実施例を示す静止状態のフィルターカテーテ
ルの断面図である。
【図２】 広げられたフィルターの断面図である。
【図３】 軸りに沿ったフィルターの横断面図である。
【図４】 フィルターの末端の部分断面図である。
【図５】 Ｉｊユ開平４−１２６１６１　（１３）熱硬化処理中に
フィルターカテーテルを保持する装置の側面図である。
【符号の説明】
１　フィルター ２　管状体 ３　導管 ４　金属リング ６　帯状体 ８　案内ロッド １０　円筒管 １１．１２　エンドリング １３　ひし形部 １４　ブロック用リング
【書類者】
図 面
【図１】
【図２】
【図３】
【図４】
【図５】

Claims (9)

    【特許請求の範囲】
  1. 【請求項１】末端方向に周囲にかけて対称的に分布され
    且つフレキシブルな複数の帯状体を規定する複数の縦の
    刻み目をつける管状体と、この管状体の内側の導管と前
    記管状体を末端付近で結合する結合材とからなるフィル
    ターカテーテル。
  2. 【請求項２】前記管状体及び前記導管の末端が熱溶接さ
    れることを特徴とする請求項１のフィルターカテーテル
    。
  3. 【請求項３】前記管状体及び前記導管の末端間に含めら
    れ、且つ熱溶接により固定された放射線の不透過材料製
    のリングを具備してなる請求項２のフィルターカテーテ
    ル。
  4. 【請求項４】前記管状体の末端が導管の内側の方へ折り
    曲げられ、一方では前記リングを、他方では前記導管の
    末端を被覆することを特徴とした請求項３のフィルター
    カテーテル。
  5. 【請求項５】前記内部導管の末端は、金属リングより外
    方にフレアーにされている請求項３のフィルターカテー
    テル。
  6. 【請求項６】前記導管が帯状体の向かい側に位置する領
    域においてオリフィスから構成されて成る請求項１のフ
    ィルターカテーテル。
  7. 【請求項７】末端部は熱硬化処理を受け、フレキシブル
    な帯状体は変形に対する抵抗が改善されることを特徴と
    した請求項１のフィルターカテーテル。
  8. 【請求項８】前記帯状体が広げられた状態で熱硬化処理
    が行なわれ、フレキシブルな帯状体を構成する４弗化エ
    チレンが前記広げられた状態を記憶する請求項７のフィ
    ルターカテーテル。
  9. 【請求項９】前記帯状体が螺旋状によじられている間に
    熱硬化処理が行なわれ、フレキシブルな帯状体を構成す
    る４弗化エチレンが前記螺旋形状を記憶する請求項７又
    は請求項８のフィルターカテーテル。
JP02415729A 1989-12-13 1990-12-11 フィルターカテーテル Expired - Lifetime JP3143478B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8917201A FR2655533A1 (fr) 1989-12-13 1989-12-13 Filtre-catheter.
FR8917201 1989-12-13

Publications (2)

Publication Number Publication Date
JPH04126161A true JPH04126161A (ja) 1992-04-27
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Also Published As

Publication number Publication date
FR2655533A1 (fr) 1991-06-14
GR3025263T3 (en) 1998-02-27
DE69034045T2 (de) 2004-03-04
ATE156992T1 (de) 1997-09-15
ES2104595T3 (es) 1997-10-16
EP0437121B1 (fr) 1997-08-20
DE69031304D1 (de) 1997-09-25
DE69031304T2 (de) 1997-12-18
EP0771550B1 (fr) 2003-03-12
EP0771550A2 (fr) 1997-05-07
EP0771549A3 (fr) 1997-07-30
CA2029280C (en) 2000-11-14
EP0771549B1 (fr) 2003-02-26
DE69034049T2 (de) 2003-12-11
DE69034045D1 (de) 2003-04-03
JP3143478B2 (ja) 2001-03-07
ATE233072T1 (de) 2003-03-15
ATE234052T1 (de) 2003-03-15
DK0437121T3 (da) 1998-04-06
EP0437121A2 (fr) 1991-07-17
CA2029280A1 (en) 1991-06-14
DE69034049D1 (de) 2003-04-17
EP0771549A2 (fr) 1997-05-07
EP0437121A3 (en) 1991-11-06
EP0771550A3 (fr) 1997-08-20

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