SE515118C2 - Flexibel expanderbar stent - Google Patents
Flexibel expanderbar stentInfo
- Publication number
- SE515118C2 SE515118C2 SE9700206A SE9700206A SE515118C2 SE 515118 C2 SE515118 C2 SE 515118C2 SE 9700206 A SE9700206 A SE 9700206A SE 9700206 A SE9700206 A SE 9700206A SE 515118 C2 SE515118 C2 SE 515118C2
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- meander
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- meander patterns
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- stent
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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
- A61F2/86—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 sheet material 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 sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
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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
- A61F2/86—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 sheet material 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
- A61F2/856—Single tubular stent with a side portal passage
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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
- A61F2/86—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 sheet material 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 sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
- A61F2002/91533—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 sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other characterised by the phase between adjacent bands
- A61F2002/91541—Adjacent bands are arranged out of phase
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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
- A61F2/86—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 sheet material 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 sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
- A61F2002/9155—Adjacent bands being connected to each other
- A61F2002/91558—Adjacent bands being connected to each other connected peak to peak
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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
- 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
- A61F2230/0013—Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped
-
- 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
- A61F2230/0028—Shapes in the form of latin or greek characters
- A61F2230/0054—V-shaped
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (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)
- Public Health (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Prostheses (AREA)
- Materials For Medical Uses (AREA)
- Dowels (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Springs (AREA)
- Cable Accessories (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Description
u. l5 ~' 515118 2 kunna böjas, när de matas genom ett krökt blodkärl. När stentarna enligt det amerikanska patentet 5 102 417 expanderar så expanderar transplantatet radiellt och krymper sålunda i längdled. Samtidigt vrides emellertid de spiralformade förbindelseelementen. Vridrörelsen är högst troligt skadlig för blodkärlet.
Det amerikanska patentet 5 195 984 beskriver en likartad stent men med ett rakt förbindelseelement, som är parallellt med de rörformade transplantatens längd- axel, mellan de rörformade transplantaten. Det raka ele- mentet eliminerar vridrörelsen; detta är emellertid ej något speciellt förbindelseelement.
SUMMERING AV FÖRELIGGANDE UPPFINNING Det är därför ett ändamål med föreliggande upp- finning att åstadkomma en flexibel stent med minimal krympning, i längdriktningen, vid expansion.
Stenten enligt föreliggande uppfinning är formad av ett rör med en mönstrad form, som uppvisar första och andra meandermönster med axlar som sträcker sig i första och andra riktningar, varvid de andra meandermönstren är sammanflätade med de första meandermönstren. De första och andra riktningarna kan vara vinkelräta mot varandra.
I enlighet med en utföringsform av föreliggande upp- finning är de första meandermönstren formade i jämna och udda, första meandermönster. De jämna och udda, första meandermönstren är l80° ur fas med varandra och de udda mönstren uppträder mellan vartannat jämnt mönster. De andra meandermönstren kan också vara formade i jämna och udda mönster.
I enlighet med en föredragen utföringsform av före- liggande uppfinning uppvisar dessutom de andra meander- mönstren två slingor per period och de jämna och udda, första meandermönstren är förbundna på första respektive andra sidor av varje slinga i de andra meandermönstren.
Alternativt eller dessutom är de andra meander- mönstren formade i jämna och udda, andra meandermönster. l5 ~“515118 ö I denna utföringsform uppvisar de jämna och udda, första meandermönstren slingor och de jämna och udda, andra meandermönstren är förbundna med de jämna och udda, första meandermönstren för att lämna en hel slinga mellan varje par jämna och udda, andra meandermönster.
I enlighet med en föredragen utföringsform av upp- finningen är vidare de första och andra meandermönstren formade av plan metall. Alternativt kan de vara skurna av tråd. Vidare kan de vara inbäddade i eller täckta av något kroppskompatibelt material.
KORT BESKRIVNING AV RITNINGARNA Föreliggande uppfinning kommer att mer fullständigt förstås och inses av den följande beskrivningen i samband med ritningarna, på vilka: Figur l är en illustration av en mönstrad stent, som är konstruerad och som fungerar i enlighet med en första, föredragen utföringsform av föreliggande uppfinning; Figur 2 är en illustration av stentens enligt figur l mönster; Figur 3 är en illustration av stenten enligt figur l i en bockad position; Figur 4 är en illustration av stenten enligt figur l i ett expanderat format; Figurerna 5A och 5B är illustrationer av föränd- ringar i mönstret hos stenten enligt figur l, på grund av expansion; Figur 6 är en schematisk illustration av en andra utföringsform av mönstret för en stent; Figur 7 är en illustration av en tredje utförings- form av mönstret för stenten; och Figur 8 är en illustration av mönstret i figur 7 i ett expanderat format." u -v-u . u <515 118 4 DETALJERAD BESKRIVNING AV FÖREDRAGNA UTFÖRINGSFORMER Det hänvisas nu till figurerna 1 - 4, som illustre- rar en första utföringsform av en stent, vilken är konstruerad och fungerar i enlighet med föreliggande uppfinnings principer. Figur 1 illustrerar stenten i dess ej expanderade form, figur 2 illustrerar stentens mönster, figur 3 illustrerar denna i en delvis bockad position och figur 4 illustrerar denna i en expanderad form.
Stenten enligt föreliggande uppfinning är ett rör, vars sidor är formade i ett flertal av vardera två vinkelräta meandermönster, vilka mönster är sammanflätade med varandra. Benämningen "meandermönster" har upptagits här för att beskriva ett periodiskt mönster kring en centrumlinje och benämningen "vinkelräta meandermönster" är mönster vars centrumlinjer är vinkelräta mot varandra.
I stenten enligt figurerna 1 - 4 har de två meander- mönstren betecknats med 11 och 12 och de är lättast att se i figur 2. Meandermönstret 11 är en vertikal sinus- kurva med en vertikal centrumlinje 9. Meandermönstret 11 uppvisar två slingor 14 och 16 per period, varvid sling- orna 14 är öppna åt höger under det att slingorna 16 är öppna åt vänster. Slingorna 14 och 16 delar gemensamma element 15 och 17, där elementet 15 är en förbindelse från en slinga 14 till dess efterföljande slinga 16, och elementet 15 förbinder den ena slingan 16 med dess efter- följande slinga 14.
Meandermönstret 12 är ett horisontellt mönster med en horisontell centrumlinje 13. Meandermönstret 12 upp- visar också slingor, betecknade 18 och 20, men mellan slingorna i en period finns en förlängd, rak sektion som betecknats 22. Slingorna 18 är öppna nedåt och slingorna är öppna uppåt. Det vertikala meandermönstret 11 är försett med udda och jämna (o och e) versioner, vilka är 180° ur fas med varandra. Sålunda vetter varje àt vänster öppen slinga 16 i meandermönstret llo mot en åt höger öppen slinga 14 i meandermönstret lle och en åt höger isi=1š 118 öppen slinga 14 i meandermönstret llo vetter mot en åt vänster öppen slinga 16 i meandermönstret 11e.
Det horisontella meandermönstret 12 är också anord- nat i udda och jämna former. Varje horisontellt meander- mönsters l2e raka sektioner 22 skär vart tredje gemensamt element 17 i det vertikala meandermönstret lle. Det hori- sontella meandermönstrets l2o raka sektioner 22 skär vart tredje gemensamt element 15 i det vertikala meandermönst- ret 11e, med början med två gemensamma element 15 efter ett skuret gemensamt element 17. Resultatet blir en hel slinga 14 mellan meandermönstren l2e samt l2o och en hel slinga 16 mellan meandermönstren l2o och 12e.
Med hänvisning åter till figur 1 är mönstret enligt figur 2 format till ett rör 30 av elastiskt, lätt defor- merbart material, såsom en metall. På grund av de två meandermönstren blir stenten enligt figur 1 flexibel, när den är fäst över en kateterballong, och kan därför lätt dragas genom krökta blodkärl. Ett exempel pà det sätt, på vilket stenten enligt figur 1 bockas har illustrerats i figur 3.
I figur 3 börjar stenten bockas vid en punkt som markerats med A, i den riktning som markerats med pilen 40. Då stenten börjar att krökas hamnar den sektion som markerats med I på insidan av kurvan, under det att den sektion som markerats med O hamnar på utsidan av kurvan.
Kurvans I insida är förkortad gentemot kurvans O utsida.
Under bockningen förändras slingorna 14 - 20 till höger om pumpen A till sin form för att kompensera för skillnader i längd mellan kurvornas insida och utsida.
Exempelvis hamnar slingorna 18i och 20i, nära kurvans in- sida, närmare varandra än vad slingorna l8o och 200 gör på kurvans utsida, vilka expanderar. Slingorna 14i och 16i nära insidan I höptryckes, 140 och l6o, under det att slingorna närmare kurvans utsida O, expanderas.
Såsom framgår är de båda meandermönstren 11 och 12 involverade i bockningen. Fastän det ej visats skall det -u- .vu-u nu 515.118 I b förstås, att stenten enligt figurerna 1 - 4 kan bockas i valfri riktning och i mer än en riktning när som helst.
Figur 4 illustrerar stenten enligt figur 1 i dess expanderade form. När stenten expanderar så expanderar de båda meandermönstren ll och 12 (dvs alla slingor 14 - 20 blir större). Såsom framgår uppvisar den expanderade stenten två slags inneslutna utrymmen, ett stort utrymme 42 mellan meandermönstren 12o och l2e samt ett litet ut- rymme 44 mellan meandermönstren l2e och 120. Såsom också framgår uppvisar varje stort utrymme 42 två slingor 14 på sin vänstra sida och två slingor 16 på sin högra sida. De stora utrymmena mellan de vertikala meandermönstren lle och llo, vilka har betecknats 42a, uppvisar slingor 18 vid sina övre och nedre partier, under det att de stora utrymmena mellan de vertikala meandermönstren 110 och 11e, som har betecknats 42b, uppvisar slingor 20 vid sina övre och nedre partier. Detsamma gäller för de små utrymmena 44a och 44b.
Det skall observeras att, på grund av de vinkelräta meandermönstren 11 och 12, stenten enligt figur 1 ej väs- entligt kommer att krympa vid expansion. Detta har illustrerats i detalj i figurerna 5A och SB, till vilka det nu hänvisas. Figur 5A illustrerar rörelsen, vid ex- pansion, hos ett vertikalt meandermönster 11 och figur 5B illustrerar rörelsen, vid expansion, hos ett horisontellt meandermönster 12. De ursprungliga mönstren har visats med heldragna linjer och de expanderade mönstren har visats med streckade linjer.
Det vertikala meandermönstret 11 enligt figur 5A expanderar genom att dess slingor 14 och 16 breddas. Som ett resultat av detta växer det vertikala meandermönstret 11 vertikalt en sträcka 2*h1 per slinga. Emellertid krym- per det också horisontellt en sträcka 2*d1¿ Likaledes expanderar det horisontella meandermönstret 12 enligt figur 5B genom att dess slingor 18 och 20 breddas. Som ett resultat av detta växer det horisontella meander- mönstret 12 horisontellt en sträcka 2*d2 per slinga. Det :se .15 118 7 krymper emellertid också vertikalt en sträcka hg. Sålunda kompenserar det vertikala meandermönstrets ll vertikala ökning, åtminstone delvis, det horisontella meandermönst- rets 12 vertikala krympning, och vice versa. Det skall observeras, att varje stents ändpartier endast delvis blir kompenserade och därför kan krympa något.
Det skall förstås, att de två vinkelräta meander- mönstren ll och 12 samt den kompensation som de åstad- kommer för varandra ger flexibilitet åt den ej expan- derade stenten enligt figur l. När stenten har expanderat ger emellertid ändringarna i varje slinga 14 och 16 styvhet åt resulterande stenten och möjliggör sålunda, att stenten kan bibehålla ett blodkärl vid en önskad innerdiameter.
Stenten enligt föreliggande uppfinning kan fram- ställas av plan metall, som etsats till mönstret enligt figur 2. Den etsade metallen bockas därefter för att forma röret 30. Alternativt kan mönstret enligt figur 2 framställas av svetsad eller vriden tråd.
Det skall förstås, att stenten enligt föreliggande uppfinning kan vara tillverkad av metall och/eller tråd.
Dessutom kan den vara överdragen med ett skyddande material, inbäddad i ett medikament och/eller täckt av ett material som kan fylla utrymmena 42 och 44.
Det skall förstås, att föreliggande uppfinning inne- fattar alla stentar som framställts med ett mönster som formats av två meandermönster, vinkelrät eller på annat sätt anordnade. Andra exemplifierande mönster, också med vinkelräta meandermönster, har åstadkommits här varvid figur 6 är en schematisk version och figur 7 är en mer rundad version. Figur 8 visar mönstret enligt figur 7 i ett expanderat format. Mönstret enligt figurerna 6 och 7 är likadant som det som visas i figur 2, med undantag av att det uppvisar fler horisontella meandermönster 12 och att det är av ett slag, i stället för att utgöras av jämna och udda såsom i figur 2. l 10 3 u a .n av.. -1515 118~ 8 Såsom framgår av de båda figurerna 6 och 7 finns det två typer av vertikala meandermönster lle och llo, vilka är l80° ur fas med varandra. De horisontella meander- mönstren 12 är förbundna med varje linje 15 i det verti- kala meandermönstret lle.
Figur 8 illustrerar mönstret enligt figur 7 i ett expanderat format. Eftersom det ej finns några jämna och udda, matet enligt figur 8, så finns det ej några stora och små horisontella meandermönster, i det expanderade for- utrymmen. I stället är alla utrymmen av samma storlek.
Det kommer att inses av en fackman på området, att föreliggande uppfinning ej är begränsad till det som speciellt har visats och beskrivits här. I stället definieras föreliggande uppfinnings skyddsomfång av de bifogade patentkraven.
Claims (14)
1. 0 15 20 25 30 35 w 118 9 PATENTKRAV om är formad av ett rör med en mönstrad 'l Qi-n J.. vvv í 1' (IJ form, k ä n n e t e c k n a d a v att den mönstrade formen innefattar: a. jämna, första meandermönster (lle) med axlar som sträcker sig i en första riktning; b. udda, axlar som sträcker sig i nämnda första riktning, varvid de udda, (llo) de jämna, första meandermönstren(1le) första meandermönster (llo), som också har första meandermönstren är l80° ur fas med och uppträder (lle): med axlar som sträcker första meandermönster (12) sig i en andra riktning, som skiljer sig fràn den första mellan vartannat jämnt, c. andra meandermönster riktningen, varvid de andra meandermönstren (12) är sammanflätade med de jämna (lle) och udda (llo), första meandermönstren för att bilda en i huvudsak enhetligt fördelad struktur.
2. Stent enligt patentkravet 1, k ä n n e t e c k n a d a v att de jämna, (lle) och de udda, meandermönstren (llo) är periodiska kring axlar som första meandermönstren första sträcker sig i den första riktningen och att de andra meandermönstren (12) är periodiska kring axlar som sträcker sig i den andra riktningen.
3. Stent enligt nàgot av patentkraven 1 eller 2, k, ä n n e t e c k n a d a v att de andra meandermönstren (12) uppvisar två slingor (18 eller 20) per period och att de jämna (lle) och udda (llo), första meandermönstren är förbundna med varandra på första respektive andra sidor av varje slinga (18 eller 20).
4. Stent enligt nàgot av föregående patentkrav, k ä n n e t e c k n a d a v att de andra meandermönstren (12) är formade av jämna (12e) och udda (120),
5. Stent enligt patentkravet 4, andra meandermönster. k ä n n e t e c k n a d a v att de jämna (lle) och udda (llo), första meandermönster uppvisar n» n lO 15 20 25 30 35 5-.15 ;1 13 ä-š s u oc: n /O slingor (14 eller 16) och att de jämna (l2e) och udda 12 ), andra meandermönstren är förbundna med de jämna 11 ) och udda (110), bilda en hel slinga (14 eller 16) mellan varje par jämna ( o ( e första meandermönstren för att (l2e) och udda (l2o), andra meandermönster.
6. Stent som är formad av ett rör med en mönstrad form, k ä n n e t e c k n a d a v att den mönstrade formen innefattar: a. första meandermönster (lle och 110) med axlar som sträcker sig en första riktning; (12) sig i en andra riktning, som skiljer sig från den första b. andra meandermönster med axlar som sträcker riktningen, varvid de andra meandermönstren (12) är (lle) och udda (11o), meandermönstren för att bilda en i huvudsak enhetligt fördelad struktur.
7. Stent enligt patentkravet 6, sammanflätade med de jämna första k ä n n e t e c k n a d a v att de första meandermönstren (lle och 11o)är periodiska kring axlar som sträcker sig i den första riktningen och att de andra meandermönstren (12) är periodiska kring axlar som sträcker sig i den andra riktningen.
8. Stent enligt nàgot av patentkraven 1 till 7, k à n n e t e c k n a d a v att de första och andra riktningarna är vinkelräta mot varandra.
9. Stent enligt nàgot av patentkraven 1 till 7, k ä n n e t e c k n a d a v att de första och andra riktningarna ej är vinkelräta mot varandra.
10. Stent enligt nàgot av patentkraven 1 till 9, k ä n n e t e c k n a d a v att de första och andra meandermönstren är formade av träd.
11. ll. Stent enligt nàgot av patentkraven 1 till 9, k ä n n e t e c k n a d a v att de första och andra meandermönstren är utskurna ur plan metall.
12. Stent enligt nàgot av föregående patentkrav, k ä n n e t e c k n a d a v att stenten har avslutats pà nàgot av följande sätt: överdragning med ett l0 15 20 25 30 35 515 *118 /I skyddande material, inbäddning i medikament och täckt med ctt material.
13. Stent, k ä n n e t e c k n a d a v att den innefattar: (lle), som var och en uppvisar (llo) alternerande serpentinsektioner, (14 eller 16), udda serpentinsektionen (llo) är ur fas med den jämna a. åtminstone udda och jämna första områden med krökt form varvid den serpentinsektionen (lle) på så sätt, att de första områdena med krökt form (14 eller 16) pà den udda serpentinsektionen ligger intill de första områdena med krökt form (14 eller 16) på den jämna serpentinsektionen (lie),- b. åtminstone ett flexibelt förbindelseelement (18 eller 20), förbinder intillliggande, och som innefattar ett flertal flexibla ben som första områden med krökt form (14 eller 16) hos intilliggande jämna (lle) och udda (llo) serpentinsektioner med varandra, varvid varje flexibelt ben (18 eller 20) uppvisar åtminstone två partier som är förbundna med åtminstone ett andra område med krökt form (18 eller 20) och varvid (14 eller 16) (18 eller 20) med krökt form definierar första och andra vinklar, vars de första och andra områdena bisektrislinjer är anordnade i vinkel mot varandra.
14. Stent som innefattar ett nät av intilliggande, med varandra förbundna celler, k ä n n e t e c k n a d a V att varje cell innefattar: ett jämnt antal fasta längder, alternerande första (18 eller 20) (14 eller 16) förbundna med varandra till en sluten cell, varvid varje och andra vilka är slingor, slinga (18 eller 20; 14 eller 16) uppvisar åtminstone två partier med ett område med krökt form mellan dessa, (18 eller 20) (14 eller 16) slingorna definierar första och andra vinklar, vars varvid de första och andra bisektrislinjer bildar vinkel mot varandra.
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Application Number | Priority Date | Filing Date | Title |
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US28218194A | 1994-07-28 | 1994-07-28 | |
US08/457,354 US5733303A (en) | 1994-03-17 | 1995-05-31 | Flexible expandable stent |
PCT/US1995/008975 WO1996003092A1 (en) | 1994-07-28 | 1995-07-26 | A flexible expandable stent |
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Publication Number | Publication Date |
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SE9700206D0 SE9700206D0 (sv) | 1997-01-24 |
SE9700206L SE9700206L (sv) | 1997-02-28 |
SE515118C2 true SE515118C2 (sv) | 2001-06-11 |
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Application Number | Title | Priority Date | Filing Date |
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SE9700206A SE515118C2 (sv) | 1994-07-28 | 1997-01-24 | Flexibel expanderbar stent |
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US (1) | US5733303A (sv) |
EP (9) | EP1181901B1 (sv) |
JP (5) | JP3236623B2 (sv) |
KR (1) | KR970704387A (sv) |
CN (1) | CN1119975C (sv) |
AT (6) | ATE308945T1 (sv) |
AU (2) | AU702468B2 (sv) |
BR (1) | BR9508353A (sv) |
CA (5) | CA2365589C (sv) |
CH (4) | CH693439A5 (sv) |
CZ (1) | CZ288740B6 (sv) |
DE (15) | DE29521205U1 (sv) |
DK (5) | DK0762856T3 (sv) |
EE (1) | EE03416B1 (sv) |
ES (4) | ES2123285T3 (sv) |
FI (1) | FI970316A (sv) |
GB (2) | GB2315415B (sv) |
HK (3) | HK1001756A1 (sv) |
LU (1) | LU90031B1 (sv) |
NO (1) | NO312122B1 (sv) |
NZ (1) | NZ291543A (sv) |
PL (1) | PL180527B1 (sv) |
PT (3) | PT846452E (sv) |
RO (1) | RO117899B1 (sv) |
SE (1) | SE515118C2 (sv) |
SI (1) | SI9520079B (sv) |
SK (1) | SK283134B6 (sv) |
UA (1) | UA45355C2 (sv) |
WO (1) | WO1996003092A1 (sv) |
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- 1995-07-26 DE DE19581503T patent/DE19581503C2/de not_active Expired - Lifetime
- 1995-07-26 DE DE69524638T patent/DE69524638T2/de not_active Revoked
- 1995-07-26 DE DE29521193U patent/DE29521193U1/de not_active Expired - Lifetime
- 1995-07-26 SK SK115-97A patent/SK283134B6/sk unknown
- 1995-07-26 CA CA002424525A patent/CA2424525C/en not_active Expired - Lifetime
- 1995-07-26 CH CH01343/01A patent/CH693439A5/de not_active IP Right Cessation
- 1995-07-26 DE DE69533931T patent/DE69533931T3/de not_active Expired - Lifetime
- 1995-07-26 DE DE29522344U patent/DE29522344U1/de not_active Expired - Lifetime
- 1995-07-26 AT AT01122700T patent/ATE308945T1/de not_active IP Right Cessation
- 1995-07-26 CA CA002365170A patent/CA2365170C/en not_active Expired - Lifetime
- 1995-07-26 ES ES98101296T patent/ES2172041T3/es not_active Expired - Lifetime
- 1995-07-26 DE DE29522345U patent/DE29522345U1/de not_active Expired - Lifetime
- 1995-07-26 CH CH00180/97A patent/CH691429A5/de not_active IP Right Cessation
- 1995-07-26 DK DK98101293T patent/DK0846449T3/da active
- 1995-07-26 CH CH01436/01A patent/CH693441A5/de not_active IP Right Cessation
- 1995-07-26 DE DE19549477.6A patent/DE19549477C5/de not_active Expired - Lifetime
- 1995-07-26 AT AT98101293T patent/ATE212210T1/de not_active IP Right Cessation
- 1995-07-26 NZ NZ291543A patent/NZ291543A/xx unknown
- 1995-07-26 UA UA97020873A patent/UA45355C2/uk unknown
- 1995-07-26 EP EP98101294A patent/EP0846450B1/en not_active Revoked
- 1995-07-26 EP EP98101295A patent/EP0846451A3/en not_active Withdrawn
- 1995-07-26 DE DE69534608T patent/DE69534608T2/de not_active Expired - Lifetime
- 1995-07-26 ES ES98101293T patent/ES2174341T3/es not_active Expired - Lifetime
- 1995-07-26 EP EP01123201A patent/EP1181902B2/en not_active Expired - Lifetime
- 1995-07-26 DE DE69504659T patent/DE69504659T2/de not_active Revoked
- 1995-07-26 WO PCT/US1995/008975 patent/WO1996003092A1/en not_active Application Discontinuation
- 1995-07-26 ES ES98101294T patent/ES2169885T3/es not_active Expired - Lifetime
- 1995-07-26 CN CN95195119A patent/CN1119975C/zh not_active Expired - Fee Related
- 1995-07-26 AT AT98101294T patent/ATE210414T1/de not_active IP Right Cessation
- 1995-07-26 DK DK98101294T patent/DK0846450T3/da active
- 1995-07-26 CH CH01344/01A patent/CH693440A5/de not_active IP Right Cessation
- 1995-07-26 GB GB9721668A patent/GB2315415B/en not_active Expired - Lifetime
- 1995-07-26 CA CA002195783A patent/CA2195783C/en not_active Expired - Lifetime
- 1995-07-26 AT AT95929314T patent/ATE170733T1/de not_active IP Right Cessation
- 1995-07-26 BR BR9508353A patent/BR9508353A/pt not_active IP Right Cessation
- 1995-07-26 CZ CZ1997191A patent/CZ288740B6/cs not_active IP Right Cessation
- 1995-07-26 DK DK98101296T patent/DK0846452T3/da active
- 1995-07-26 GB GB9701636A patent/GB2304587B/en not_active Expired - Lifetime
- 1995-07-26 PT PT98101293T patent/PT846449E/pt unknown
- 1995-07-26 EP EP98101292A patent/EP0846448A3/en not_active Withdrawn
- 1995-07-26 DE DE19549520A patent/DE19549520C5/de not_active Expired - Lifetime
- 1995-07-26 DE DE69525182.1T patent/DE69525182C5/de not_active Expired - Lifetime
- 1995-07-26 EE EE9700032A patent/EE03416B1/xx not_active IP Right Cessation
- 1995-07-26 JP JP50581496A patent/JP3236623B2/ja not_active Expired - Lifetime
- 1995-07-26 PT PT98101294T patent/PT846450E/pt unknown
- 1995-07-26 SI SI9520079A patent/SI9520079B/sl not_active IP Right Cessation
- 1995-07-26 AU AU32706/95A patent/AU702468B2/en not_active Expired
- 1995-07-26 AT AT01123201T patent/ATE286689T1/de not_active IP Right Cessation
- 1995-07-26 EP EP95929314A patent/EP0762856B1/en not_active Revoked
- 1995-07-26 EP EP20040026188 patent/EP1602343A3/en not_active Withdrawn
- 1995-07-26 KR KR1019970700537A patent/KR970704387A/ko active IP Right Grant
- 1995-07-26 PL PL95318270A patent/PL180527B1/pl not_active IP Right Cessation
- 1995-07-26 AT AT98101296T patent/ATE211898T1/de not_active IP Right Cessation
- 1995-07-26 EP EP98101296A patent/EP0846452B1/en not_active Revoked
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1997
- 1997-01-21 DK DK008097A patent/DK8097A/da not_active Application Discontinuation
- 1997-01-23 NO NO19970289A patent/NO312122B1/no not_active IP Right Cessation
- 1997-01-24 FI FI970316A patent/FI970316A/sv not_active IP Right Cessation
- 1997-01-24 SE SE9700206A patent/SE515118C2/sv not_active IP Right Cessation
- 1997-01-28 LU LU90031A patent/LU90031B1/de active
-
1998
- 1998-02-02 HK HK98100760A patent/HK1001756A1/xx unknown
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1999
- 1999-03-25 JP JP11081198A patent/JPH11319112A/ja active Pending
- 1999-05-25 AU AU31247/99A patent/AU3124799A/en not_active Abandoned
- 1999-11-25 JP JP11334452A patent/JP2000176022A/ja active Pending
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2001
- 2001-07-04 JP JP2001203829A patent/JP2002078808A/ja active Pending
-
2002
- 2002-07-24 HK HK02105469.9A patent/HK1045637B/zh not_active IP Right Cessation
- 2002-08-26 HK HK02106279.7A patent/HK1046354A1/zh unknown
-
2005
- 2005-04-12 JP JP2005115052A patent/JP4391963B2/ja not_active Expired - Lifetime
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Legal Events
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NUG | Patent has lapsed |