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1. WO1997025937 - PROGRAMMABLE VARIABLY FLEXIBLE MODULAR STENTS

Publication Number WO/1997/025937
Publication Date 24.07.1997
International Application No. PCT/US1997/000828
International Filing Date 17.01.1997
IPC
A61F 2/91 2013.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
2Filters 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
82Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
86Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure
90characterised by a net-like or mesh-like structure
91made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes
A61F 2/915 2013.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
2Filters 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
82Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
86Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure
90characterised by a net-like or mesh-like structure
91made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes
915with bands having a meander structure, adjacent bands being connected to each other
A61F 2/00 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
2Filters 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
CPC
A61F 2/91
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
2Filters 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
82Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
86Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
90characterised by a net-like or mesh-like structure
91made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
A61F 2/915
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
2Filters 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
82Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
86Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
90characterised by a net-like or mesh-like structure
91made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
915with bands having a meander structure, adjacent bands being connected to each other
A61F 2002/91575
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
2Filters 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
82Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
86Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
90characterised by a net-like or mesh-like structure
91made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
915with bands having a meander structure, adjacent bands being connected to each other
9155Adjacent bands being connected to each other
91575connected peak to trough
A61F 2230/0054
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
2230Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
0002Two-dimensional shapes, e.g. cross-sections
0028Shapes in the form of latin or greek characters
0054V-shaped
A61F 2250/0018
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
2250Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
0014having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
0018differing in elasticity, stiffness or compressibility
Applicants
  • JANG, G., David [US]/[US]
Inventors
  • JANG, G., David
Agents
  • SAMPLES, Kenneth, H.
Priority Data
60/010,15218.01.1996US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PROGRAMMABLE VARIABLY FLEXIBLE MODULAR STENTS
(FR) EXTENSEURS MODULAIRES, A FLEXIBILITE VARIABLE, PROGRAMMABLE
Abstract
(EN)
A programmable, variably flexible modular stent includes: (a) a plurality of basic circular ring units (28) made from a thin malleable material, where each basic ring unit has a recurring sequence of circumferential segments (31, 35) and circumferential/longitudinal segments (33, 37); and (b) at least one bridging link (40) that longitudinally connects a circumferential segment of each basic ring unit to a corresponding circumferential segment of an adjacent basic ring unit. The basic ring units which are connected to each other by way of the bridging link(s) thereby form a tubular-shaped stent frame (20). The tubular-shaped stent frame assumes a pre-expanded size (Fig. 3-b) having a first diameter (d1) when the circumferential/longitudinal segments (33, 37) of the basic ring units are oriented to lie predominantly in a longitudinal direction. The tubular-shaped frame assumes an expanded size (Fig. 3-A) having a second diameter (d2) when the circumferential/longitudinal segments of the basic ring units are bent to lie predominantly in a circumferential direction. Advantageously, the second diameter of the tubular-shaped frame may be two to three times greater than the first diameter. Hence, the stent frame (20), when in its pre-expanded size, may be readily inserted into a lumen, and once inserted, may be expanded to assume its expanded size, thereby providing an expanded stent frame which thereafter serves as a supporting structure, i.e., a scaffold, to hold the lumen open with an open diameter that is equal to the second diameter (d2). The rigidity, strength, density, length and flexibility of the stent may be programmably set by selective formation of modules (70, 72), of two or more rings, having prescribed characteristics as determined in large part by selected intra-connections between the rings (28), and by selective inter-connecting the modules or rings with differing patterns of bridging links.
(FR)
Extenseur modulaire, à flexibilité variable, programmable, comprenant: (a) une pluralité d'anneaux circulaires de base (28) façonnés dans un matériau malléable, mince, chaque anneau de base possédant une séquence récurrente de segments circonférentiels (31, 35) et de segments circonférentiels/longitudinaux (33, 37); et (b) au moins une liaison formant un pont (40) qui raccorde longitudinalement un segment circonférentiel de chaque anneau de base à un segment circonférentiel correspondant d'un anneau de base adjacent. Ces anneaux de base, qui sont raccordés entre eux au moyen d'une liaison (de liaisons) formant un pont, forment ainsi une structure d'extenseur de forme tubulaire (20). La structure de l'extenseur de forme tubulaire prend une dimension de pré-expansion présentant un premier diamètre (d1) lorsque les segments circonférentiels/longitudinaux (33, 37) des anneaux de base sont orientés de façon à être placés principalement dans un sens longitudinal. La structure de forme tubulaire prend une dimension d'expansion présentant un second diamètre (d2) lorsque les segments circonférentiels/longitudinaux des anneaux de base sont courbés pour être placés principalement dans un sens circonférentiel. De façon avantageuse, le second diamètre peut être deux à trois fois plus grand que le premier. Par conséquent, la structure de l'extenseur (20), sous sa forme de pré-expansion, peut être facilement insérée dans un lumen, et une fois insérée, peut être dilatée de façon à prendre une dimension d'expansion, créant ainsi une structure d'extenseur dilatée qui sert ensuite de structure de support afin de maintenir le lumen ouvert, le diamètre ouvert étant égal au second diamètre (d2). La rigidité, la résistance, la densité, la longueur et la flexibilité de l'extenseur peuvent être déterminées de manière programmable par la formation sélective de modules (70, 72), de deux anneaux ou plus, dont les caractéristiques prédéfinies sont déterminées en grande partie par des interconnexions sélectionnées entre les anneaux (28), et par l'interconnexion sélective des modules ou anneaux dont les liaisons en forme de pont présentent des configurations différentes.
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