DE20308672U1 - Adjustable stent, assembled of several ring-shaped segments joined with particular elements - Google Patents
Adjustable stent, assembled of several ring-shaped segments joined with particular elementsInfo
- Publication number
- DE20308672U1 DE20308672U1 DE20308672U DE20308672U DE20308672U1 DE 20308672 U1 DE20308672 U1 DE 20308672U1 DE 20308672 U DE20308672 U DE 20308672U DE 20308672 U DE20308672 U DE 20308672U DE 20308672 U1 DE20308672 U1 DE 20308672U1
- Authority
- DE
- Germany
- Prior art keywords
- stent
- ring segments
- coupling elements
- stent according
- assembled
- 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.)
- Expired - Lifetime
Links
- 230000000295 complement effect Effects 0.000 claims abstract description 7
- 230000008878 coupling Effects 0.000 claims description 38
- 238000010168 coupling process Methods 0.000 claims description 38
- 238000005859 coupling reaction Methods 0.000 claims description 38
- 210000000078 claw Anatomy 0.000 claims description 20
- 208000031481 Pathologic Constriction Diseases 0.000 description 8
- 208000037804 stenosis Diseases 0.000 description 7
- 230000036262 stenosis Effects 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 229910001000 nickel titanium Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 210000001145 finger joint Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 206010010356 Congenital anomaly Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 210000000709 aorta Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000013 bile duct Anatomy 0.000 description 1
- 210000000621 bronchi Anatomy 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 210000003238 esophagus Anatomy 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 229940127554 medical product Drugs 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical group [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
- 210000001635 urinary tract Anatomy 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
Classifications
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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 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
- A61F2/82—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
- A61F2002/91516—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 the meander having a change in frequency along the band
-
- 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
- A61F2002/91525—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 within the whole structure different bands showing different meander characteristics, e.g. frequency or amplitude
-
- 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
- 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 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 characterised by the phase between adjacent bands
-
- 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
- A61F2002/9155—Adjacent bands being connected to each other
- A61F2002/91558—Adjacent bands being connected to each other connected peak to peak
-
- 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
- A61F2002/9155—Adjacent bands being connected to each other
- A61F2002/91575—Adjacent bands being connected to each other connected peak to trough
-
- 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
- A61F2002/9155—Adjacent bands being connected to each other
- A61F2002/91591—Locking connectors, e.g. using male-female connections
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Optics & Photonics (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Physics & Mathematics (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
Description
Unser Zeichen: 22/40900-001Our reference: 22/40900-001
Qualimed Innovative Medizinprodukte GmbH Boschstraße 16. D-21423 WinsenQualimed Innovative Medical Products GmbH Boschstrasse 16. D-21423 Winsen
StentStents
Die Erfindung betrifft einen Stent mit einem tubulären Stützgerüst aus axial aufeinander folgenden, untereinander verbundenen Ringsegmenten.The invention relates to a stent with a tubular support structure made of axially successive, interconnected ring segments.
Stents kommen bei der Behandlung von Stenosen zur Anwendung. Stenosen sind angeborene oder krankheitsbedingt erworbene Verschlüsse oder Verengungen von tubulären Körperröhren, wie beispielsweise Luftröhre, Bronchien, Speiseröhre, Gallengänge, Harnwege, Aorta und andere Körpergefäße. Ursache für Stenosen sind häufig Tumore, die auf die Körperröhren drücken, oder Ablagerungen, welche die Körperröhren verschließen. Die Stenosen können durch operative und nicht operative Maßnahmen geöffnet werden. Bei den nicht operativen Maßnahmen werden Stents durch Kathetertechniken in das intrakorporale Gefäß im Bereich der Stenose eingebracht. Die Stents fungieren dort als Gefäßprothese zur Abstützung der Gefäßinnenwände.Stents are used to treat stenosis. Stenosis is a congenital or disease-related blockage or narrowing of tubular body tubes, such as the trachea, bronchi, esophagus, bile ducts, urinary tract, aorta and other body vessels. Stenosis is often caused by tumors that press on the body tubes or deposits that block the body tubes. The stenosis can be opened using surgical and non-surgical measures. In non-surgical measures, stents are inserted into the intracorporeal vessel in the area of the stenosis using catheter techniques. The stents act as a vascular prosthesis to support the inner walls of the vessel.
Stents gibt es in verschiedenartigen Ausführungsformen und Designs des Stützgerüsts. Häufig zum Einsatz gelangende Stents weisen ein tubuläres Stützgerüst aus Metall auf, welches aus mehreren Ringsegmenten besteht. Diese sind üblicherweise aus wellen- bzw. mäanderförmig sich über Bogenabschnitte endlos aneinander schließende Streben gebildet. In Längsrichtung der Stents benachbarte Ringsegmente sind über Verbinderstreben fest verbunden. Ein derartiger Stent ist aus der EP-B 0 364 787 bekannt.Stents are available in various forms and designs of the support structure. Stents that are frequently used have a tubular support structure made of metal, which consists of several ring segments. These are usually formed from struts that adjoin one another in a wave-like or meandering manner via arched sections. Ring segments that are adjacent in the lengthwise direction of the stents are firmly connected via connecting struts. A stent of this type is known from EP-B 0 364 787.
Viele Stents haben fixierte Enddurchmesser und sind selbstexpandierend. Andere Ausführungsformen lassen sich durch geeignete Werkzeuge, z.B. Ballons oder Spreizer, im Durchmesser verändern, um sie der anatomischen Situation anzupassen. Weiterhin gehören auch Stents aus einer sogenannten Formgedächtnislegierung mit Memoryeffekt zum Stand der Technik. Die am häufigsten verwendete Formgedächtnislegierung ist Nitinol, bei der es sich um eine Nickel-Titan-Legierung handelt. Ein hieraus gefertigter Stent geht temperaturabhängig von seinem komprimierten Ausgangszustand in seinen aufgeweiteten Stützzustand über.Many stents have fixed end diameters and are self-expanding. Other designs can be changed in diameter using suitable tools, e.g. balloons or spreaders, to adapt them to the anatomical situation. Stents made from a so-called shape memory alloy with a memory effect are also state of the art. The most commonly used shape memory alloy is nitinol, which is a nickel-titanium alloy. A stent made from this changes from its compressed initial state to its expanded support state depending on the temperature.
Im Umfang der DE 100 26 307 A1 zählt ein Stent zum Stand der Technik mit einem Stützgerüst, an dessen Enden in Umfangsrichtung verteilt mehrere Halteelemente ausgebildet sind. Über die Halteelemente kann der Stent mit einem Positionierelement des Einführkatheters gekoppelt werden.In the scope of DE 100 26 307 A1, a stent with a support structure, at the ends of which several holding elements are distributed in the circumferential direction, is considered to be state of the art. The stent can be coupled to a positioning element of the delivery catheter via the holding elements.
Der aus der DE 199 50 756 A1 bekannte Stent weist in nicht expandiertem Zustand einen gelenkigen Aufbau aus mehreren Ringsegmenten auf, die in Längsrichtung ineinander greifen und somit gegeneinander schwenkbar sind, ohne dass eine feste physische Verbindung zwischen ihnen besteht. Im aufgeweiteten Zustand sind die Kopplungen zwischen den einzelnen Ringsegmenten freigesetzt bzw. separiert, um die Ringsegmente in der endgültigen Aufweitung vollständig voneinander zu trennen.The stent known from DE 199 50 756 A1 has, in the non-expanded state, an articulated structure made up of several ring segments that interlock in the longitudinal direction and can thus pivot against each other without a fixed physical connection between them. In the expanded state, the couplings between the individual ring segments are released or separated in order to completely separate the ring segments from each other in the final expansion.
Naturbedingt weisen Stenosen jedoch selten einen gleichförmigen Verlauf auf. Sie variieren in der örtlichen Ausbreitung, also beispielsweise der Länge undHowever, due to their nature, stenoses rarely follow a uniform course. They vary in their local spread, for example in their length and
■3- &pgr;&igr;.:.·Mh &Ggr;&igr;:·;■ 3 - π&igr;.:.·Mh Ggr;&igr;:·;
&pgr;&igr;.:.·Mh &Ggr;&igr;:;π&igr;.:.·Mh Ggr;&igr;:;
hinsichtlich der Einschnürkraft. In der Praxis hat sich herausgestellt, dass die Stützgerüste der Stents häufig entweder nicht die erforderlichen Radialkräfte bereitstellen, um einer Stenose ausreichend auch über einen längeren Zeitraum standzuhalten oder aber so konfiguriert sind, dass sie die Funktion des Gefäßes behindern. Es ist daher wünschenswert, einen flexibel anpassbaren Stent zur Verfügung zu haben.in terms of constriction force. In practice, it has been found that the supporting structures of the stents often either do not provide the required radial forces to adequately withstand a stenosis over a longer period of time or are configured in such a way that they impair the function of the vessel. It is therefore desirable to have a flexibly adaptable stent available.
Der Erfindung liegt ausgehend vom Stand der Technik die Aufgabe zugrunde, einen flexibel gestaltbaren Stent bereit zu stellen, der hinsichtlich seiner Geometrie, insbesondere seiner Länge und/oder seiner Stützeigenschaften in vorteilhafter Weise auf die jeweiligen anatomischen Verhältnisse angepasst werden kann.Based on the prior art, the invention is based on the object of providing a flexibly designed stent which can be advantageously adapted to the respective anatomical conditions with regard to its geometry, in particular its length and/or its support properties.
Die Lösung dieser Aufgabe besteht nach der Erfindung in einem Stent gemäß den Merkmalen von Schutzanspruch 1, bei dem das Stützgerüst aus mehreren axial aufeinander folgenden Ringsegmenten gebildet ist und zumindest zwei benachbarte Ringsegmente durch formschlüssig ineinander greifende Koppelelemente verbindbar sind.The solution to this problem according to the invention consists in a stent according to the features of claim 1, in which the support structure is formed from several axially successive ring segments and at least two adjacent ring segments can be connected by positively engaging coupling elements.
Der erfindungsgemäße Stent bzw. die zur Bildung des Stents benutzten Ringsegmente sind nach Art eines Baukastensystems aufgebaut und individuell zusammensetzbar. Der Stent kann überall dort zum Einsatz gelangen, wo unterschiedliche Längen und/oder verschiedene Eigenschaften, z.B. verschieden starke Radialkräfte oder Geometrien zum Einsatz kommen sollen oder müssen.The stent according to the invention or the ring segments used to form the stent are constructed in the manner of a modular system and can be assembled individually. The stent can be used wherever different lengths and/or different properties, e.g. different strengths of radial forces or geometries, should or must be used.
Ein Stent kann in Anpassung auf die jeweiligen Einsatzanforderungen der zu behandelnden Stenose aus einzelnen oder zu Gruppen zusammengefassten Ringsegmenten aufgebaut bzw. zusammengesetzt werden. Eine schnelle Reaktionszeit für spezifische und speziell angepasste Stents für einen Patienten ist möglich.A stent can be constructed or assembled from individual ring segments or ring segments grouped together to suit the specific application requirements of the stenosis to be treated. A quick response time for specific and specially adapted stents for a patient is possible.
Die funktionale Anpassung des erfindungsgemäßen Stents erfolgt durch die Kombination von Ringsegmenten mit unterschiedlichen Eigenschaften, insbesondere voneinander verschiedenen Radialkräften. Dies kann durch die Kombination von Ringsegmenten mit unterschiedlichem Design und/oder aus unterschiedlichen Werkstoffen erfolgen.The functional adaptation of the stent according to the invention is achieved by combining ring segments with different properties, in particular radial forces that differ from one another. This can be achieved by combining ring segments with different designs and/or made of different materials.
Der vorgeschlagene Stent hat auch fertigungstechnische und ökonomische Vorteile. So kann die Ausschussrate insgesamt durch die Verwendung von kurzen einzelnen Ringsegmenten verringert werden. Ein einzelnes Ringsegment ist beispielsweise 20 mm lang. Ein kompletter Stent kann dann aus 6 einzelnen Ringsegmenten mit einer Gesamtlänge von 120 mm zusammengesetzt werden. Ist ein Ringsegment fehlerhaft, braucht nur dieses einzelne kurze Ringsegment ersetzt werden, wohingegen bei einem einstückig ausgebildeten Stützgerüst der gesamte Stent unbrauchbar wäre.The proposed stent also has manufacturing and economic advantages. For example, the overall rejection rate can be reduced by using short individual ring segments. For example, a single ring segment is 20 mm long. A complete stent can then be assembled from 6 individual ring segments with a total length of 120 mm. If a ring segment is defective, only this individual short ring segment needs to be replaced, whereas with a one-piece support structure the entire stent would be unusable.
Die Verbindung der Ringsegmente über die Koppelelemente ist formschlüssig, jedoch begrenzt gelenkig. Diese Maßnahme ist für die Kurvengängigkeit des Stents vorteilhaft.The connection of the ring segments via the coupling elements is positive, but has limited flexibility. This measure is beneficial for the stent's ability to navigate curves.
Die Ringsegmente werden über formschlüssig ineinander greifende Koppelelemente verbunden. Vorzugsweise sind die Koppelelemente als zueinander komplementäre Klauenverbinder ausgebildet, wie dies Schutzanspruch 2 vorsieht. Zweckmäßigerweise stehen beide Koppelelemente gegenüber den Ringsegmenten in Stentlängsachse axial vor (Schutzanspruch 3). Es ist aber auch denkbar, dass jeweils eines der Koppelelemente innerhalb des Ringsegments ausgebildet ist, so dass jeweils nur ein korrespondierendes Koppelelement in axialer Richtung des Stents vorsteht. In der Praxis kann es vorteilhaft sein, an den jeweiligen freien Enden eines erfindungsgemäßen Stents spezielle End-Ringsegmente anzuwenden, die nur auf einer Seite in Richtung zur Stentmitte Koppelelemente aufweisen.The ring segments are connected via interlocking coupling elements. The coupling elements are preferably designed as claw connectors that complement each other, as provided for in claim 2. Both coupling elements expediently protrude axially relative to the ring segments in the longitudinal axis of the stent (claim 3). However, it is also conceivable that one of the coupling elements is formed within the ring segment, so that only one corresponding coupling element protrudes in the axial direction of the stent. In practice, it can be advantageous to use special end ring segments at the respective free ends of a stent according to the invention, which only have coupling elements on one side in the direction of the stent center.
Über die Koppelelemente werden die Ringsegmente formschlüssig verbunden. Hierzu weisen die Koppelelemente zur Erzeugung einer stabilen VerbindungThe ring segments are connected in a form-fitting manner via the coupling elements. To achieve this, the coupling elements have
Hinterschneidungsflächen auf. Die Hinterschneidungsflächen können gekrümmt verlaufen (Schutzanspruch 4). Auch geradlinig verlaufende Hinterschneidungsflächen (Schutzanspruch 5) sind vorteilhaft. Möglich ist zudem eine Kombination von gekrümmt verlaufenden Hinterschneidungsflächen und geradlinig verlaufenden Hinterschneidungsflächen an den Koppelelementen. Mit den Hinterschneidungsflächen stützen sich die Koppelelemente aneinander ab, so dass eine zuverlässige formschlüssige Kopplung der Ringsegmente untereinander gewährleistet ist.Undercut surfaces. The undercut surfaces can be curved (protection claim 4). Straight undercut surfaces (protection claim 5) are also advantageous. A combination of curved undercut surfaces and straight undercut surfaces on the coupling elements is also possible. The coupling elements support each other with the undercut surfaces, so that a reliable, positive coupling of the ring segments to each other is guaranteed.
Zweckmäßigerweise können eine Anzahl von Ringsegmenten durch Verbinderstreben zu Stentabschnitten zusammengeschlossen sein, wie dies Schutzanspruch 6 vorsieht. Danach sind eine Anzahl von Ringsegmenten durch Verbinderstreben fest verbunden. Die einzelnen Abschnitte wiederum weisen Koppelelemente auf, die eine erfindungsgemäß vorgesehene formschlüssige Verbindung der Ringsegmente bzw. der Stentabschnitte untereinander ermöglichen.A number of ring segments can expediently be connected to form stent sections by connecting struts, as provided for in claim 6. A number of ring segments are then firmly connected by connecting struts. The individual sections in turn have coupling elements which enable the ring segments or stent sections to be connected to one another in a form-fitting manner as provided for in accordance with the invention.
Nach den Merkmalen von Schutzanspruch 7 sind die Ringsegmente aus sich wellenförmig endlos aneinander schließenden Streben gebildet. Bevorzugt ist ein erfindungsgemäßer Stent aus Metall gefertigt. Hierbei können alle verformbaren medizinisch möglichen Metalle bzw. Metalllegierungen zum Einsatz gelangen, z.B. Edelstahl, Kobaltlegierungen, Reineisen oder Nickel-Titan-Legierungen oder andere medizinische Implantatmaterialien.According to the features of claim 7, the ring segments are formed from struts that adjoin one another in a wave-like manner. A stent according to the invention is preferably made of metal. All deformable, medically possible metals or metal alloys can be used here, e.g. stainless steel, cobalt alloys, pure iron or nickel-titanium alloys or other medical implant materials.
Die Erfindung ist nachfolgend anhand von Ausführungsbeispielen näher beschrieben. Es zeigen:The invention is described in more detail below using exemplary embodiments. They show:
Figur 1 das Stentmuster eines erfindungsgemäßen Stents in einer Abwicklung;Figure 1 shows the stent pattern of a stent according to the invention in a developed view;
Figur 2 einen Ausschnitt aus dem Stentmuster gemäß der Figur 1;Figure 2 shows a section of the stent pattern according to Figure 1;
Figur 3 in vergrößerter Darstellung die Koppelelemente des Stents gemäß Figur 1 bzw. 2;Figure 3 shows an enlarged view of the coupling elements of the stent according to Figures 1 and 2;
Figur 4 einen Ausschnitt aus dem Stentmuster einer weiteren Ausführungsform eines Stents;Figure 4 shows a detail of the stent pattern of another embodiment of a stent;
Figur 5 in vergrößerter Darstellung die Koppelelements des Stents gemäß Figur 4;Figure 5 shows an enlarged view of the coupling element of the stent according to Figure 4;
Figur 6 einen Ausschnitt aus dem Stentmuster einer weiteren Ausführungsform eines Stents undFigure 6 shows a section of the stent pattern of another embodiment of a stent and
Figur 7 ebenfalls in vergrößerter Darstellung die Koppelelemente des Stents gemäß der Figur 6.Figure 7 also shows in an enlarged view the coupling elements of the stent according to Figure 6.
Figur 1 zeigt ein aus Metall gefertigten Stert 1 in der Abwicklung seines Stützgerüstes 2. In der Praxis ist das Stützgerüst 2 tubulär geformt. Es besteht aus mehreren hintereinander folgenden Ringjiegmenten 3-16. Die Ringsegmente 3-16 weisen eine wellenförmige Konfigi ration aus sich über Bogenabschnitten 17 endlos aneinander schließenden Sireben 18,19 auf.Figure 1 shows a star 1 made of metal in the development of its supporting framework 2. In practice, the supporting framework 2 is tubular in shape. It consists of several ring segments 3-16 arranged one behind the other. The ring segments 3-16 have a wave-shaped configuration of sirebes 18,19 which adjoin one another endlessly via arched sections 17.
Die einander benachbarten Ringsegmente 6 und 7 bzw. 12 und 13 sind durch formschlüssig ineinandergreifende Koppelelenrente 20, 21 verbunden. Ferner erkennt man, dass die Ringsegmente 3-6, 7-12 und 13-16 durch Verbinderstreben 22 zu Stentabschnitten 23, 24, 25 zusammengeschlossen sind. Die Verbinderstreben 22 weisen einen V-förmig konfigurierten Strebenabschnitt 26 auf, der jeweils in dem Raum zwischen zwei mit axialem Abstand benachbarten Ringsegmenten 3-6, 7-12 und 13-16 angeordne: ist.The adjacent ring segments 6 and 7 or 12 and 13 are connected by positively engaging coupling elements 20, 21. It can also be seen that the ring segments 3-6, 7-12 and 13-16 are connected to form stent sections 23, 24, 25 by connecting struts 22. The connecting struts 22 have a V-shaped strut section 26, which is arranged in the space between two axially spaced adjacent ring segments 3-6, 7-12 and 13-16.
Die Ausführungsformen der Stents, von deien in den Figuren 4 bis 7 Ausschnitte dargestellt sind, entsprechend vom grundsätzlichen Aufbau einem Stent 1, wie anhand der Figur 1 beschrieben. Die Stents unterscheiden sich in der Konfiguration ihrer Koppelelemente, durch die eine lösbare formschlüssige Verbindung zwischen den Ringsegmenten 6 und 7 bzw. 12 und 13 hergestellt wird.The embodiments of the stents, sections of which are shown in Figures 4 to 7, correspond to the basic structure of a stent 1, as described with reference to Figure 1. The stents differ in the configuration of their coupling elements, by means of which a detachable, positive connection is produced between the ring segments 6 and 7 or 12 and 13.
Die Koppelelemente 20, 21 bzw. 27, 28 und 29, 30 sind als zueinander komplementäre Klauenverbinder 31, 32 bzw. 33, 34 bzw. 35, 36 ausgebildet. Sie ergänzen sich gegenseitig so, dass eine formschlüssige Verbindung zwischen den Ringsegmenten 6 und 7 bzw. 12 und 13 und damit zwischen den Stentabschnitten 23, 24, 25 durch den gegenseitigen Eingriff erzeugt wird.The coupling elements 20, 21 or 27, 28 and 29, 30 are designed as mutually complementary claw connectors 31, 32 or 33, 34 or 35, 36. They complement each other in such a way that a positive connection between the ring segments 6 and 7 or 12 and 13 and thus between the stent sections 23, 24, 25 is created by the mutual engagement.
Die Koppelelemente 20, 21 in der Ausführung gemäß den Figuren 1 bis 3 sind als hakenartige Klauenverbinder 31, 32 ausgebildet mit geradlinig verlaufenden Hinterschneidungsflächen 37 und gekrümmt verlaufenden Hinterschneidungsflächen 38. Sowohl der Klauenverbinder 31 als auch der Klauenverbinder 32 weisen einen fingerförmigen Hakenabschnitt 39 auf, der eine Art Maul bildet, in dem ein zinkenartiger Widerlagerabschnitt 40 des jeweils anderen Klauenverbinders 31 bzw. 32 eingreift.The coupling elements 20, 21 in the embodiment according to Figures 1 to 3 are designed as hook-like claw connectors 31, 32 with straight undercut surfaces 37 and curved undercut surfaces 38. Both the claw connector 31 and the claw connector 32 have a finger-shaped hook section 39 which forms a kind of mouth in which a prong-like abutment section 40 of the other claw connector 31 or 32 engages.
Man erkennt ferner im Anschlussbereich 41 der Koppelelemente 20 eine Ausnehmung 42. Diese unterstützt die Flexibilität des Ringsegments 6 bzw. 13 im Anschlussbereich 41 und trägt zur Material- und Gewichtseinsparung bei.Furthermore, a recess 42 can be seen in the connection area 41 of the coupling elements 20. This supports the flexibility of the ring segment 6 or 13 in the connection area 41 and contributes to saving material and weight.
Des Weiteren ist zu erkennen, dass die Koppelelemente 21 über einen parallel zur Stentlängsachse L verlaufenden Longitudinalabschnitt 43 im Tiefsten am Bogenabschnitt 17 zwischen zwei Streben 18,19 angeschlossen sind.Furthermore, it can be seen that the coupling elements 21 are connected at the deepest point to the arch section 17 between two struts 18, 19 via a longitudinal section 43 running parallel to the stent longitudinal axis L.
Die Koppelelemente 27, 28, wie anhand der Figuren 4 und 5 beschrieben, sind ebenfalls als zueinander komplementäre Klauenverbinder 33, 34 ausgestaltet, wobei der in Bildebene linke Klauenverbinder 33 gabelförmig konfiguriert ist. In die Gabel 44 greift der rechte Klauenverbinder 34 mit seinem rund konfigurierten Widerlagerkopf 45 ein. Die an den Klauenverbindern 33, 34 ausgebildeten Hinterschneidungsflächen 46, 47 verlaufen gleichförmig gekrümmt.The coupling elements 27, 28, as described with reference to Figures 4 and 5, are also designed as claw connectors 33, 34 that complement each other, with the claw connector 33 on the left in the image plane being configured in a fork shape. The right claw connector 34 engages in the fork 44 with its round abutment head 45. The undercut surfaces 46, 47 formed on the claw connectors 33, 34 are uniformly curved.
Im Widerlagerkopf 45 ist eine kreisrunde Ausnehmung 48 vorgesehen. Die Ausnehmung 48 trägt zur Gewichtseinsparung bei, kann aber auch zur Aufnahme eines Markers genutzt werden, welcher zur Verbesserung der Indentifikation des Stents beim Implantationsvorgang oder danach dient.A circular recess 48 is provided in the abutment head 45. The recess 48 contributes to weight savings, but can also be used to accommodate a marker, which serves to improve the identification of the stent during the implantation process or thereafter.
Anhand der Figuren 6 und 7 ist eine weitere alternative Ausgestaltung von Koppelelementen 29, 30 dargestellt, über die eine lösbare formschlüssige Verbindung zwischen zwei benachbarten Ringsegmenten 6 und 7 bzw. 12 und 13 eines Stents 1 hergestellt werden kann.Figures 6 and 7 show a further alternative embodiment of coupling elements 29, 30, via which a detachable positive connection can be established between two adjacent ring segments 6 and 7 or 12 and 13 of a stent 1.
Auch die Koppelelemente 29, 30 weisen zwei zueinander komplementäre Klauenverbinder 35, 36 auf mit einer trapezförmigen Konfiguration. Der Klauenverbinder 35 besitzt zwei Fingerzinken 49, 50 mit geradlinig verlaufenden Hinterschneidungsflächen 51, 52, die eine maulartige Aussparung 53 für einen trapezförmig gestalteten Zinken 54 des Klauenverbinders 36 bilden. Der Zinken 54 kommt in der Aussparung 53 zum Eingriff und stützt sich hier mit seinen geradlinigen Hinterschneidungsflächen 55, 56 ab. Der Zinken 54 weist ferner einen verbreiterten Basisabschnitt 57 auf, der in einen Longitudinalabschnitt 58 übergeht zum Anschluss an einen Bogenabschnitt 17 zwischen zwei Streben 18,19.The coupling elements 29, 30 also have two mutually complementary claw connectors 35, 36 with a trapezoidal configuration. The claw connector 35 has two finger prongs 49, 50 with straight undercut surfaces 51, 52, which form a mouth-like recess 53 for a trapezoidal prong 54 of the claw connector 36. The prong 54 engages in the recess 53 and is supported here with its straight undercut surfaces 55, 56. The prong 54 also has a widened base section 57, which merges into a longitudinal section 58 for connection to an arched section 17 between two struts 18, 19.
1 - Stent1 - Stents
2- Stützgerüst2- Support scaffolding
3 - Ringsegment3 - Ring segment
4- Ringsegment4- Ring segment
5- Ringsegment5- Ring segment
6 - Ringsegment6 - Ring segment
7 - Ringsegment7 - Ring segment
8 - Ringsegment 9- Ringsegment8 - ring segment 9- ring segment
10- Ringsegment10- ring segment
11 - Ringsegment11 - Ring segment
12 - Ringsegment 13- Ringsegment 14 - Ringsegment12 - ring segment 13- ring segment 14 - ring segment
15- Ringsegment15- Ring segment
16- Ringsegment16- Ring segment
17- Bogenabschnitt17- Arch section
18- Strebe18- Strut
19- Strebe19- Strut
20- Koppelelement 21 - Koppelelement20 - coupling element 21 - coupling element
22- Verbinderstrebe22- Connecting strut
23- Stentabschnitt23- Stent section
24- Stentabschnitt24- Stent section
25- Stentabschnitt25- Stent section
26 - Strebenabschnitt26 - Strut section
27 - Koppelelement27 - Coupling element
28 - Koppelelement28 - Coupling element
29 - Koppelelement29 - Coupling element
30- Koppelelement30- Coupling element
31 - Klauenverbinder31 - Claw connector
32 - Klauenverbinder 33- Klauenverbinder32 - Claw connector 33- Claw connector
34 - Klauenverbinder34 - Claw connector
35 - Klauenverbinder35 - Claw connector
36 - Klauenverbinder36 - Claw connector
37 - gerade Hinterschneidungsfläche37 - straight undercut surface
38 - gekrümmte Hinterschneidungsfläche38 - curved undercut surface
39 - Hakenabschnitt39 - Hook section
40 - Widerlagerabschnitt40 - Abutment section
41 - Anschlussbereich41 - Connection area
42 - Ausnehmung42 - Recess
43 - Longitudinalabschnitt 44- Gabel43 - Longitudinal section 44- Fork
45 - Widerlagerkopf45 - Abutment head
46 - Hinterschneidungsfläche46 - Undercut surface
47 - Hinterschneidungsfläche47 - Undercut surface
48 - Ausnehmung48 - Recess
49 - Fingerzinken49 - Finger joints
50 - Fingerzinken50 - Finger joints
51 - Hinterschneidungsfläche51 - Undercut surface
52 - Hinterschneidungsfläche52 - Undercut surface
53 - Aussparung53 - Recess
54 - Zinken54 - Tines
55 - Hinterschneidungsfläche55 - Undercut surface
56 - Hinterschneidungsfläche56 - Undercut surface
57 - Basisabschnitt57 - Base section
58 - Longitudinalabschnitt58 - Longitudinal section
L- StentlängsachseL- Stent longitudinal axis
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20308672U DE20308672U1 (en) | 2003-06-04 | 2003-06-04 | Adjustable stent, assembled of several ring-shaped segments joined with particular elements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20308672U DE20308672U1 (en) | 2003-06-04 | 2003-06-04 | Adjustable stent, assembled of several ring-shaped segments joined with particular elements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE20308672U1 true DE20308672U1 (en) | 2003-09-04 |
Family
ID=27816442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE20308672U Expired - Lifetime DE20308672U1 (en) | 2003-06-04 | 2003-06-04 | Adjustable stent, assembled of several ring-shaped segments joined with particular elements |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE20308672U1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005089672A1 (en) * | 2004-03-16 | 2005-09-29 | Alveolus, Inc. | Stent |
| WO2006089739A1 (en) * | 2005-02-25 | 2006-08-31 | Abbott Laboratories Vascular Enterprises Limited | Modular vascular prosthesis having axially variable properties and improved flexibility and methods of use |
| WO2006116383A3 (en) * | 2005-04-25 | 2007-01-11 | Ev3 Inc | Controlled fracture connections for stents |
| US8025694B2 (en) | 2005-02-25 | 2011-09-27 | Abbott Laboratories Vascular Enterprises Limited | Modular vascular prosthesis and methods of use |
| US8262721B2 (en) | 2005-05-13 | 2012-09-11 | Merit Medical Systems, Inc. | Drainage stent and associated method |
| EP3315100A1 (en) * | 2016-10-27 | 2018-05-02 | Cook Medical Technologies LLC | Stent with segments capable of uncoupling during expansion |
-
2003
- 2003-06-04 DE DE20308672U patent/DE20308672U1/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005089672A1 (en) * | 2004-03-16 | 2005-09-29 | Alveolus, Inc. | Stent |
| AU2004317383B2 (en) * | 2004-03-16 | 2009-05-14 | Alveolus, Inc. | Stent |
| US8652196B2 (en) | 2004-03-16 | 2014-02-18 | Merit Medical Systems, Inc. | Stent |
| WO2006089739A1 (en) * | 2005-02-25 | 2006-08-31 | Abbott Laboratories Vascular Enterprises Limited | Modular vascular prosthesis having axially variable properties and improved flexibility and methods of use |
| US8002818B2 (en) | 2005-02-25 | 2011-08-23 | Abbott Laboratories Vascular Enterprises Limited | Modular vascular prosthesis having axially variable properties and improved flexibility and methods of use |
| US8025694B2 (en) | 2005-02-25 | 2011-09-27 | Abbott Laboratories Vascular Enterprises Limited | Modular vascular prosthesis and methods of use |
| US8603154B2 (en) | 2005-02-25 | 2013-12-10 | Abbott Laboratories Vascular Enterprises Limited | Modular vascular prosthesis and methods of use |
| WO2006116383A3 (en) * | 2005-04-25 | 2007-01-11 | Ev3 Inc | Controlled fracture connections for stents |
| US8961585B2 (en) | 2005-04-25 | 2015-02-24 | Covidien Lp | Controlled fracture connections for stents |
| US9603732B2 (en) | 2005-04-25 | 2017-03-28 | Covidien Lp | Stent including sinusoidal struts |
| US8262721B2 (en) | 2005-05-13 | 2012-09-11 | Merit Medical Systems, Inc. | Drainage stent and associated method |
| EP3315100A1 (en) * | 2016-10-27 | 2018-05-02 | Cook Medical Technologies LLC | Stent with segments capable of uncoupling during expansion |
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