WO2004110312A1 - Stent - Google Patents

Stent Download PDF

Info

Publication number
WO2004110312A1
WO2004110312A1 PCT/DE2004/000570 DE2004000570W WO2004110312A1 WO 2004110312 A1 WO2004110312 A1 WO 2004110312A1 DE 2004000570 W DE2004000570 W DE 2004000570W WO 2004110312 A1 WO2004110312 A1 WO 2004110312A1
Authority
WO
WIPO (PCT)
Prior art keywords
stent
ring segments
coupling elements
stent according
section
Prior art date
Application number
PCT/DE2004/000570
Other languages
German (de)
English (en)
Inventor
Thomas Nissl
Wilhelm Fink
Original Assignee
Alveolus Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alveolus Inc. filed Critical Alveolus Inc.
Publication of WO2004110312A1 publication Critical patent/WO2004110312A1/fr

Links

Classifications

    • 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
    • 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
    • A61F2002/826—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents more than one stent being applied sequentially
    • 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
    • A61F2002/828—Means for connecting a plurality of stents allowing flexibility of the whole structure
    • 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
    • A61F2002/91516—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 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 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 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
    • A61F2002/91525—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 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 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 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
    • 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
    • A61F2002/91575—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 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
    • A61F2002/91591—Locking connectors, e.g. using male-female connections

Definitions

  • the invention relates to a stent with a tubular support structure made of axially successive, interconnected ring segments.
  • Stents are used to treat stenoses.
  • Stenoses are congenital or disease-related occlusions or narrowing of tubular body tubes, such as trachea, bronchial tubes, esophagus, bile ducts, urinary tract, aorta and other body vessels.
  • Stenoses are often caused by tumors that press on the body tubes or deposits that close the body tubes.
  • the stenoses can be opened by surgical and non-surgical measures.
  • stents are introduced into the intracorporeal vessel in the area of the stenosis using catheter techniques. There, the stents act as a vascular prosthesis to support the inner walls of the vessel.
  • Stents come in various designs and designs of the scaffold. Frequently used stents have a tubular support structure made of metal, which consists of several ring segments. These are usually formed from wave-like or meandering struts which are endlessly adjoining via arch sections. Ring segments adjacent in the longitudinal direction of the stents are firmly connected via connecting struts. Such a stent is known from EP-B 0 364 787.
  • stents have fixed end diameters and are self-expanding. Other embodiments can be implemented using suitable tools, e.g. Change the diameter of balloons or spreaders to adapt them to the anatomical situation. Furthermore, stents made of a so-called shape memory alloy with a memory effect also belong to the prior art.
  • the most commonly used shape memory alloy is Nitinol, which is a nickel-titanium alloy. A stent made from this changes depending on the temperature from its compressed initial state to its expanded support state.
  • a stent belongs to the prior art with a support structure, at the ends of which several holding elements are formed distributed in the circumferential direction.
  • the stent can be coupled to a positioning element of the insertion catheter via the holding elements.
  • the stent known from DE 199 50 756 A1 has, in the unexpanded state, an articulated structure consisting of a plurality of ring segments which engage in one another in the longitudinal direction and are thus pivotable relative to one another without there being a fixed physical connection between them.
  • the couplings between the individual ring segments are released or separated in order to completely separate the ring segments from one another in the final widening.
  • stenoses rarely have a uniform course. They vary in the local spread, for example the length and in terms of constriction.
  • the stents of the stents often either do not provide the radial forces required to withstand a stenosis sufficiently over a long period of time, or are configured to hinder the function of the vessel. It is therefore desirable to have a flexibly adaptable stent available.
  • the invention is based on the object of providing a stent which can be configured flexibly and which can be advantageously adapted to the respective anatomical conditions with regard to its geometry, in particular its length and / or its support properties.
  • a stent according to the features of claim 1 in which the supporting structure is formed from a plurality of axially successive ring segments and at least two adjacent ring segments can be connected by form-fitting interlocking coupling elements.
  • 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. radial forces or geometries of different strengths should or must be used.
  • a stent can be built or assembled from individual or grouped ring segments to suit the particular application requirements of the stenosis to be treated. A quick response time for specific and specially adapted stents for a patient is possible.
  • the functional adaptation of the stent according to the invention is carried out by combining ring segments with different properties, especially different radial forces. This can be done by combining ring segments with different designs and / or from different materials.
  • the proposed stent also has manufacturing and economic advantages.
  • the overall reject 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 single short ring segment needs to be replaced, whereas the entire stent would be unusable in the case of a support structure formed in one piece.
  • connection of the ring segments via the coupling elements is form-fitting, but has limited articulation. This measure is advantageous for the curve of the stent.
  • the ring segments are connected via interlocking coupling elements.
  • the coupling elements are preferably designed as mutually complementary claw connectors, as provided for in claim 2. Both coupling elements expediently project axially in relation to the ring segments in the longitudinal axis of the stent (claim 3). However, it is also conceivable that in each case one of the coupling elements is formed within the ring segment, so that in each case only one corresponding coupling element projects in the axial direction of the stent. In practice, it can be advantageous to use special end ring segments on the respective free ends of a stent according to the invention, which have coupling elements only on one side in the direction of the center of the stent.
  • the ring segments are positively connected via the coupling elements.
  • the coupling elements have undercut surfaces to produce a stable connection.
  • the undercut surfaces can be curved (claim 4).
  • Straight undercut surfaces (claim 5) are advantageous.
  • a combination of curved undercut surfaces and rectilinear undercut surfaces on the coupling elements is also possible.
  • the coupling elements are supported on one another with the undercut surfaces, so that reliable interlocking coupling of the ring segments to one another is ensured.
  • a number of ring segments can expediently be joined together by connecting struts to form stent sections, as provided for in patent claim 6. Then a number of ring segments are firmly connected by connector struts.
  • the individual sections in turn have coupling elements which enable a positive connection of the ring segments or of the stent sections to one another provided according to the invention.
  • the ring segments are formed from struts which adjoin one another in an undulating manner.
  • a stent according to the invention is preferably made of metal. All deformable medically possible metals or metal alloys can be used, e.g. Stainless steel, cobalt alloys, pure iron or nickel-titanium alloys or other medical implant materials.
  • Figure 1 shows the stent pattern of a stent according to the invention in a
  • FIG. 2 shows a section of the stent pattern according to FIG. 1;
  • FIG. 4 shows a detail from the stent pattern of a further embodiment of a stent
  • FIG. 5 shows an enlarged illustration of the coupling element of the stent according to FIG. 4;
  • FIG. 6 shows a section of the stent pattern of a further embodiment of a stent
  • FIG. 7 also shows the coupling elements of the stent according to FIG. 6 in an enlarged representation.
  • FIG. 1 shows a stent 1 made of metal in the development of its support structure 2.
  • the support structure 2 is tubular. It consists of several successive ring segments 3-16.
  • the ring segments 3-16 have a wave-shaped configuration of struts 18, 19 which are endlessly connected to one another via curved sections 17.
  • the adjacent ring segments 6 and 7 or 12 and 13 are connected by form-fitting interlocking coupling elements 20, 21. It can also be seen that the ring segments 3-6, 7-12 and 13-16 are joined together by connecting struts 22 to form stent sections 23, 24, 25.
  • the connector struts 22 have a V-shaped strut section 26, which is arranged in each case in the space between two axially spaced adjacent ring segments 3-6, 7-12 and 13-16.
  • the embodiments of the stents correspond to the basic structure of a stent 1, as described with reference to FIG.
  • the stents differ in the configuration of their coupling elements, by means of which a releasable positive connection between the ring segments 6 and 7 or 12 and 13 is produced.
  • the coupling elements 20, 21 and 27, 28 and 29, 30 are designed as mutually complementary claw connectors 31, 32 and 33, 34 and 35, 36, respectively. 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 produced by the mutual engagement.
  • the coupling elements 20, 21 in the embodiment according to FIGS. 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 respective other claw connector 31 or 32 engages.
  • a recess 42 can also 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.
  • the coupling elements 21 are connected at the deepest to the arch section 17 between two struts 18, 19 via a longitudinal section 43 running parallel to the longitudinal axis L of the stent.
  • the coupling elements 27, 28, as described with reference to FIGS. 4 and 5, are also designed as mutually complementary claw connectors 33, 34, 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 configured abutment head 45.
  • the undercut surfaces 46, 47 formed on the claw connectors 33, 34 are uniformly curved.
  • a circular recess 48 is provided in the abutment head 45.
  • the recess 48 contributes to saving weight, but can also be used to hold a marker which serves to improve the identification of the stent during the implantation process or afterwards.
  • a further alternative embodiment of coupling elements 29, 30 is shown on the basis of FIGS. 6 and 7, via which a releasable form-fitting connection between two adjacent ring segments 6 and 7 or 12 and 13 of a stent 1 can be established.
  • 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 tines 49, 50 with rectilinear undercut surfaces 51, 52 which form a jaw-like recess 53 for a trapezoidal tine 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 tine 54 also has a widened base section 57 which merges into a longitudinal section 58 for connection to an arc section 17 between two struts 18, 19.

Landscapes

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

Abstract

L'invention concerne un stent (1) comprenant une armature tubulaire (2) constituée de segments annulaires (3-16) se succédant dans le sens axial et reliés entre eux. Selon l'invention, au moins deux segments annulaires voisins (6 et 7 ou 12 et 13) sont reliés par des éléments d'accouplement (20, 21) s'emboîtant par liaison de forme, ces éléments se présentant sous la forme de griffes de liaison complémentaires (31, 32). Lesdits éléments d'accouplement (20, 21) font saillie axialement par rapport aux segments annulaires (6 et 7 ; 12 et 13) dans le sens longitudinal (L) du stent. Par ailleurs, des segments annulaires (3-6 ; 7-12 ; 13-16) peuvent être assemblés par l'intermédiaire d'entretoises de liaison fixes (22) de façon à former des sections de stent (23, 24, 25).
PCT/DE2004/000570 2003-06-04 2004-03-19 Stent WO2004110312A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10325128.6 2003-06-04
DE10325128A DE10325128A1 (de) 2003-06-04 2003-06-04 Stent

Publications (1)

Publication Number Publication Date
WO2004110312A1 true WO2004110312A1 (fr) 2004-12-23

Family

ID=33494807

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2004/000570 WO2004110312A1 (fr) 2003-06-04 2004-03-19 Stent

Country Status (2)

Country Link
DE (1) DE10325128A1 (fr)
WO (1) WO2004110312A1 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1523959A2 (fr) * 2003-10-17 2005-04-20 Cordis Corporation Dessin de stent à segments indépendants se détachant lors du déploiement
US7704275B2 (en) 2007-01-26 2010-04-27 Reva Medical, Inc. Circumferentially nested expandable device
US7722662B2 (en) 1998-02-17 2010-05-25 Reva Medical, Inc. Expandable stent with sliding and locking radial elements
US7763065B2 (en) 2004-07-21 2010-07-27 Reva Medical, Inc. Balloon expandable crush-recoverable stent device
WO2010118126A1 (fr) 2009-04-07 2010-10-14 William Cook Europe Aps Ensemble modulaire de stent
US7914574B2 (en) 2005-08-02 2011-03-29 Reva Medical, Inc. Axially nested slide and lock expandable device
US7947071B2 (en) 2008-10-10 2011-05-24 Reva Medical, Inc. Expandable slide and lock stent
US7988721B2 (en) 2007-11-30 2011-08-02 Reva Medical, Inc. Axially-radially nested expandable device
US8277500B2 (en) 2004-12-17 2012-10-02 Reva Medical, Inc. Slide-and-lock stent
US8523936B2 (en) 2010-04-10 2013-09-03 Reva Medical, Inc. Expandable slide and lock stent
CN104068951A (zh) * 2007-05-23 2014-10-01 山东吉威医疗制品有限公司 用于在安置过程中控制可扩张假体的装置
US9149378B2 (en) 2005-08-02 2015-10-06 Reva Medical, Inc. Axially nested slide and lock expandable device
US9408732B2 (en) 2013-03-14 2016-08-09 Reva Medical, Inc. Reduced-profile slide and lock stent
US9566179B2 (en) 2003-12-23 2017-02-14 J.W. Medical Systems Ltd. Devices and methods for controlling and indicating the length of an interventional element

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007019703A1 (de) * 2007-04-26 2008-10-30 Biotronik Vi Patent Ag Stent
DE102007022060A1 (de) * 2007-05-11 2008-11-13 Rubenstein, Nicola M., Dr. Vorrichtung zum Verbinden zweier Blutgefäße
DE102010025305B4 (de) 2010-06-28 2019-10-02 Admedes Schuessler Gmbh Implantat zum Implantieren in den menschlichen Körper und Verfahren zum Herstellen desselben
FR3009185A1 (fr) * 2013-08-01 2015-02-06 Cousin Biotech Dispositif anastomotique pour joindre des lumens ou des visceres entre-eux

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0364787B1 (fr) 1988-10-04 1992-03-04 EXPANDABLE GRAFTS PARTNERSHIP a Texas General Partnership Greffe extensible intraluminaire
WO2000015151A1 (fr) * 1998-09-16 2000-03-23 Isostent, Inc. Stent de liaison
DE19950756A1 (de) 1999-02-28 2000-08-31 Inflow Dynamics Inc Stützprothese mit longitudinaler Flexibilität und Verfahren zu deren Herstellung
DE10026307A1 (de) 2000-05-26 2001-11-29 Variomed Ag Balzers Stent,Positionierelement und Einführkatheter
US20020111671A1 (en) * 2001-02-15 2002-08-15 Stenzel Eric B. Locking stent
WO2003075797A2 (fr) * 2002-03-14 2003-09-18 Angiomed Gmbh & Co. Medizintechnik Kg Structure metallique compatible avec une imagerie par resonance magnetique, et procede de fabrication d'une telle structure

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7070614B1 (en) * 2000-05-22 2006-07-04 Malte Neuss Radially expandable vessel support

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0364787B1 (fr) 1988-10-04 1992-03-04 EXPANDABLE GRAFTS PARTNERSHIP a Texas General Partnership Greffe extensible intraluminaire
WO2000015151A1 (fr) * 1998-09-16 2000-03-23 Isostent, Inc. Stent de liaison
DE19950756A1 (de) 1999-02-28 2000-08-31 Inflow Dynamics Inc Stützprothese mit longitudinaler Flexibilität und Verfahren zu deren Herstellung
DE10026307A1 (de) 2000-05-26 2001-11-29 Variomed Ag Balzers Stent,Positionierelement und Einführkatheter
US20020111671A1 (en) * 2001-02-15 2002-08-15 Stenzel Eric B. Locking stent
WO2003075797A2 (fr) * 2002-03-14 2003-09-18 Angiomed Gmbh & Co. Medizintechnik Kg Structure metallique compatible avec une imagerie par resonance magnetique, et procede de fabrication d'une telle structure

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7722662B2 (en) 1998-02-17 2010-05-25 Reva Medical, Inc. Expandable stent with sliding and locking radial elements
EP1523959A3 (fr) * 2003-10-17 2006-07-05 Cordis Corporation Dessin de stent à segments indépendants se détachant lors du déploiement
EP1523959A2 (fr) * 2003-10-17 2005-04-20 Cordis Corporation Dessin de stent à segments indépendants se détachant lors du déploiement
US9566179B2 (en) 2003-12-23 2017-02-14 J.W. Medical Systems Ltd. Devices and methods for controlling and indicating the length of an interventional element
US9700448B2 (en) 2004-06-28 2017-07-11 J.W. Medical Systems Ltd. Devices and methods for controlling expandable prostheses during deployment
US8512394B2 (en) 2004-07-21 2013-08-20 Reva Medical Inc. Balloon expandable crush-recoverable stent device
US7763065B2 (en) 2004-07-21 2010-07-27 Reva Medical, Inc. Balloon expandable crush-recoverable stent device
US8277500B2 (en) 2004-12-17 2012-10-02 Reva Medical, Inc. Slide-and-lock stent
US9173751B2 (en) 2004-12-17 2015-11-03 Reva Medical, Inc. Slide-and-lock stent
US8292944B2 (en) 2004-12-17 2012-10-23 Reva Medical, Inc. Slide-and-lock stent
US9149378B2 (en) 2005-08-02 2015-10-06 Reva Medical, Inc. Axially nested slide and lock expandable device
US7914574B2 (en) 2005-08-02 2011-03-29 Reva Medical, Inc. Axially nested slide and lock expandable device
US8617235B2 (en) 2005-08-02 2013-12-31 Reva Medical, Inc. Axially nested slide and lock expandable device
US8540762B2 (en) 2007-01-26 2013-09-24 Reva Medical, Inc. Circumferentially nested expandable device
US7704275B2 (en) 2007-01-26 2010-04-27 Reva Medical, Inc. Circumferentially nested expandable device
CN104068951A (zh) * 2007-05-23 2014-10-01 山东吉威医疗制品有限公司 用于在安置过程中控制可扩张假体的装置
US8460363B2 (en) 2007-11-30 2013-06-11 Reva Medical, Inc. Axially-radially nested expandable device
US7988721B2 (en) 2007-11-30 2011-08-02 Reva Medical, Inc. Axially-radially nested expandable device
US9314354B2 (en) 2007-11-30 2016-04-19 Reva Medical, Inc. Axially-radially nested expandable device
US8545547B2 (en) 2008-10-10 2013-10-01 Reva Medical Inc. Expandable slide and lock stent
US9066827B2 (en) 2008-10-10 2015-06-30 Reva Medical, Inc. Expandable slide and lock stent
US7947071B2 (en) 2008-10-10 2011-05-24 Reva Medical, Inc. Expandable slide and lock stent
US8361141B2 (en) 2009-04-07 2013-01-29 Cook Medical Technologies Llc Modular stent assembly
WO2010118126A1 (fr) 2009-04-07 2010-10-14 William Cook Europe Aps Ensemble modulaire de stent
US8523936B2 (en) 2010-04-10 2013-09-03 Reva Medical, Inc. Expandable slide and lock stent
US9452068B2 (en) 2010-04-10 2016-09-27 Reva Medical, Inc. Expandable slide and lock stent
US9408732B2 (en) 2013-03-14 2016-08-09 Reva Medical, Inc. Reduced-profile slide and lock stent

Also Published As

Publication number Publication date
DE10325128A1 (de) 2005-01-05

Similar Documents

Publication Publication Date Title
WO2004110312A1 (fr) Stent
DE69838428T2 (de) Verbesserte stentkonfigurationen
DE69920127T2 (de) Tubulärer drahthybridstent
EP0536610B1 (fr) Dispositif pour la dilatation d'une sténose
DE102005016103B4 (de) Duodenumstent
DE60021040T2 (de) Flexibler medizinischer Stent
DE69732992T2 (de) Stent mit variablen Eigenschaften zur Stützoptimierung
DE4407079B4 (de) Intraluminal-Aufspannvorrichtung und Transplantat
DE69629871T2 (de) Prothetisches Implantat
DE60111161T2 (de) Stent mit geringem Querschnitt
EP1011534B1 (fr) Extenseur pour implantation transluminale
DE102004012981B4 (de) Stent
EP0481365A1 (fr) Dispositif pour dilater une sténose dans un conduit corporel
DE10253634A1 (de) Endoprothese
DE102006057216A1 (de) Vorrichtung zur Behandlung eines Blutgefässes
DE10109508A1 (de) In Längsrichtung flexibler Stent
DE102004003093B4 (de) Stent zum Einsetzen und Expandieren in einem Lumen
WO2006029617A1 (fr) Prothese de renfort
EP2136739A1 (fr) Endoprothèse vasculaire à valvule
DE10050970A1 (de) Stent
DE102012107175A1 (de) Medizinische Verschlussvorrichtung und System mit einer derartigen Verschlussvorrichtung
DE10243136A1 (de) Stent zur Implantation in oder um ein Hohlorgan
EP1684665B1 (fr) Stent
DE20318351U1 (de) Stent
DE10150547B4 (de) Stent

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase