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NO313079B1 - Fremgangsmåte for fremstilling av en grenstent - Google Patents

Fremgangsmåte for fremstilling av en grenstent Download PDF

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Publication number
NO313079B1
NO313079B1 NO20012907A NO20012907A NO313079B1 NO 313079 B1 NO313079 B1 NO 313079B1 NO 20012907 A NO20012907 A NO 20012907A NO 20012907 A NO20012907 A NO 20012907A NO 313079 B1 NO313079 B1 NO 313079B1
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NO
Norway
Prior art keywords
plate
edge
stem
branch stent
halves
Prior art date
Application number
NO20012907A
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English (en)
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NO20012907L (no
NO20012907D0 (no
Inventor
Jacob Richter
Gregory Pinchasik
Original Assignee
Medinol Ltd
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Publication date
Publication of NO20012907L publication Critical patent/NO20012907L/no
Application filed by Medinol Ltd filed Critical Medinol Ltd
Publication of NO20012907D0 publication Critical patent/NO20012907D0/no
Publication of NO313079B1 publication Critical patent/NO313079B1/no

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    • 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
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/856—Single tubular stent with a side portal passage
    • 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
    • A61F2/07—Stent-grafts
    • 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
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • 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
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/852—Two or more distinct overlapping stents
    • 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
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
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    • 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
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
    • A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes
    • 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
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
    • A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes
    • A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
    • 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
    • A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
    • A61F2/954—Instruments specially adapted for placement or removal of stents or stent-grafts for placing stents or stent-grafts in a bifurcation
    • 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
    • A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
    • A61F2/958—Inflatable balloons for placing stents or stent-grafts
    • 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
    • A61F2002/065—Y-shaped blood vessels
    • 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
    • A61F2002/065—Y-shaped blood vessels
    • A61F2002/067—Y-shaped blood vessels modular
    • 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
    • A61F2/07—Stent-grafts
    • A61F2002/075—Stent-grafts the stent being loosely attached to the graft material, e.g. by stitching
    • 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
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0041—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels or rivets, e.g. connecting screws
    • 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
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0058—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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0004—Rounded shapes, e.g. with rounded corners
    • A61F2230/001—Figure-8-shaped, e.g. hourglass-shaped
    • A—HUMAN NECESSITIES
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    • 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
    • A61F2240/00—Manufacturing or designing of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2240/001—Designing or manufacturing processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S623/00—Prosthesis, i.e. artificial body members, parts thereof, or aids and accessories therefor
    • Y10S623/901—Method of manufacturing prosthetic device
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/494—Fluidic or fluid actuated device making

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Pulmonology (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Prostheses (AREA)
  • Materials For Medical Uses (AREA)

Description

Foreliggende oppfinnelse angår en fremgangsmåte for fremstilling av en grenstent.
Stenter er vel kjent i teknikken. De er typisk utformet av et sylindrisk metallgitter som kan utvides når trykk tilføres innvendig. Alternativt kan de være utformet av tråder som er viklet i en sylindrisk form eller av plater av materiale utformet i en sylindrisk form.
Stenter og anordninger som vanligvis implanteres i kanaler i kroppen, deriblant vaskulærsystemet, for å forsterke kollapsede, delvis okkluderte, svekkede eller abnormt utvidede seksjoner av blodkaret. Stenter har også vært suksessfullt implantert i andre områder, for eksempel i urinveiene eller i galleårene for å forsterke slike kroppskanaler.
US 4 994 071 beskriver en utvidbar grenstent som har et sylinderformet hovednett utformet av sammenkoplede, fleksible tråder. To ytterligere sylindriske nett, med mindre diameter enn hovednettet, er konstruert på liknende måte. Hovednettet omfatter en fleksibel tråd som sammenkopler hovednettet med en av tilleggsnettene. En annen fleksibel tråd forbinder hovednettet med det andre tilleggsnett. De fleksible tråder danner ryggrader som strekker seg aksialt langs lengden av hovednettet og langs hver av tilleggsnettene. En ulempe med denne grenstent er dens kompliserte form av sammen-kopling av de fleksible tråder som danner ryggradene med ringstrukturen i hvert nett.
Den foreliggende oppfinnelse løser disse og andre ulemper med kjente utførelser med en fremgangsmåte for å fremstille en grenstent, slik den er definert med de i kravene angitte trekk.
En grenstent kan lages av tre plater til et ønsket mønster, hvor to plater i det vesentlige har samme størrelse og den tredje plate er bredere enn de første to plater. Hver av platene utformes til rør ved å bøye opp de langsgående kanter og sammenføyning av kantene ved sveising. Den store plate danner et rør som virker som hoveddelen av grenstenten, og de andre plater danner rør som virker som bendelene av grenstenten. De to bendeler blir så sammenføyet med stammedelen for å danne grenstenten. Videre kan en grenstent utformes ved å fremstille to stentbaser. For hver plate, blir de langsgående kanter av en del av platen svingt opp og festet til hverandre for å danne en av de to bendeler av grenstenten. De resterende frie kanter av hver av de to plater blir så sammen-føyet for å danne rammedelen av stenten. Grenstenten kan omfatte første og andre rørformede deler hvor den første del har en nær ende som danner stammedelen og en fjern ende som danner en av benområdene av grenstenten. En grenåpning er plassert mellom den nære ende og den fjerne ende av den første del. Den andre del føres inn i den langsgående utboring i stammedelen av den første del, og føres frem gjennom grenåpningen slik at den stikker forbi grenåpningen for å danne et annet ben. Når den andre del forlenges, vil den nære ende av den andre del engasjere materialet som definerer grenåpningen for å sikre den andre legg i ønsket posisjon.
Oppfinnelsen skal i det følgende beskrives nærmere under henvisning til tegningen, hvor figur 1 viser plater brukt til å utforme en utførelse av en grenstent ifølge oppfinnelsen, figur 2 viser platene etter at de er rullet sammen til en rørform, figur 3 viser rørene like før sammenmontering, figur 3 viser et sideriss av rørene vist på figur 2 etter sammenmontering, figur 5 viser et enderiss av det sammenmonterte apparat som vist på figur 3. Figur 4 viser en grenstent fremstilt ved bruk av plater 270 og 275 som vist på figur 1. Stenten 250 er utstyrt med et første ben 255 og et annet ben 260 som er festet på en stammedel 265. Grenstenten 250 er utformet av en første plate 270 og en annen plate 275 som vist på figur 1. Stentplatene 270 og 275 kan være dimensjonert og etset som tidligere diskutert. Som vist på figur 1, har den første plate 270 en første kant 271, en annen kant 272, en tredje kant 273, en fjerde kant 274, en femte kant 275, og en sjette kant 276, en sjuende kant 146, og en åttende kant 147. Den andre plate 275 har en første kant 277, en annen kant 278, en tredje kant 279, en fjerde kant 280, en femte kant 281, en sjette kant 282, en sjuende kant 148, og en åttende kant 149. Som vist på figur 2, ér kanten 274 forbundet med kanten 276 via en sveiseskjøt 290 for å danne en første del 295 som har et første benområde 255 og en første stammehalvdel 265'. Kanten 280 er forbundet med kanten 282 via en sveiseskjøt 291 for å danne en annen del 300 som har et annet benområde 260 og en annen stammehalvdel 265". Som tidligere diskutert, kan kantene være forbundet på forskjellige måter som er vel kjent blant fagfolk i teknikken. Figur 3 viser den første del 295 og den annen del 300 som vist på figur 2 i innretning like før sammenmontering. For å produsere grenstenten 250 som vist på figur 4 og 5, forbindes kanten 272 med kanten 149 via en sveiseskjøt 292, og kanten 278 forbindes med kanten 147 via en sveiseskjøt 293 slik at den første stammehalvdel 265'. og den andre stammehalvdel 265" danner stammen 265. Figur 5 er et enderiss i snitt av den stent som er vist på figur 4.

Claims (9)

1. Fremgangsmåte for fremstilling av en grenstent, karakterisert ved a) å preparere en første plate (270) med en nær ene og en fjern ende og en første side (271), en andre side (272), en tredje side (273), en fjerde side (274) en femte side (275), en sjette side (276), en syvende side (146) og en åttende side (147), b) å forme den første plates (270) fjerne ende og forbinde den fjerde side (274) med den sjette side (276) til å danne et første ben (255) og å forme den første plates (270) nære ende til å danne en første stammehalvdel (265'), c) å preparere en andre plate (275) med en nær ende og en fjern ende og en første side (277), en andre side (278), en tredje side (279), en fjerde side (280) en femte side (281), en sjette side (282), en syvende side (148) og en åttende side (149), d) å forme den andre plates (275) fjerne ende og forbinde den fjerde side (280) med den sjette side (282) for å danne et andre ben (260) og forme den andre plates (275) nære ende til å danne en andre stammehalvdel, og e) å forbinde den første stammehalvdels (265<1>) åttende side (147) med den andre stammehalvdels (265") andre side (278) og å forbinde den første stammehalvdels (265') andre side (272) med den andre stammehalvdels (265") åttende side (149) for å danne en stamme.
2. Fremgangsmåte ifølge krav 1, karakterisert ved at den første plate (270) og den andre plate (275) har i det vesentlige samme størrelse.
3. Fremgangsmåte ifølge krav 1, karakterisert ved at den første plate (270) og den andre plate (275) har ulik størrelse.
4. Fremgangsmåte ifølge krav 1, karakterisert ved å forbinde halvdelene ved skruing.
5. Fremgangsmåte ifølge krav 1, karakterisert ved å forbinde halvdelene ved krymping.
6. Fremgangsmåte ifølge krav 1, karakterisert ved å forbinde halvdelene ved lodding.
7. Fremgangsmåte ifølge krav 1, karakterisert ved å forbinde halvdelene ved sveising.
8. Fremgangsmåte ifølge krav 1, karakterisert ved å forbinde halvdelene ved punktsveising.
9. Fremgangsmåte ifølge krav 1, karakterisert ved å påføre platene (270, 275) et mønster ved etsing.
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US5827320A (en) 1998-10-27
AR017167A2 (es) 2001-08-22
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RU2002102422A (ru) 2003-10-10
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US5755734A (en) 1998-05-26
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CN1166992A (zh) 1997-12-10
US6090133A (en) 2000-07-18
NO311681B1 (no) 2002-01-07
SK54797A3 (en) 1998-11-04
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IL179676A (en) 2010-12-30
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AU729227B2 (en) 2001-01-25
IL120744A (en) 2004-01-04
EP0804907A3 (en) 1999-02-24
DE69733722D1 (de) 2005-08-18
NO972030L (no) 1997-11-04
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UA58485C2 (uk) 2003-08-15
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EP0804907A2 (en) 1997-11-05
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