FR2678508A1 - Device for reinforcing the vessels of the human body - Google Patents
Device for reinforcing the vessels of the human body Download PDFInfo
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- FR2678508A1 FR2678508A1 FR9108376A FR9108376A FR2678508A1 FR 2678508 A1 FR2678508 A1 FR 2678508A1 FR 9108376 A FR9108376 A FR 9108376A FR 9108376 A FR9108376 A FR 9108376A FR 2678508 A1 FR2678508 A1 FR 2678508A1
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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
- A61F2/88—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements formed as helical or spiral coils
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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
- A61F2/88—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements formed as helical or spiral coils
- A61F2/885—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements formed as helical or spiral coils comprising a coil including a plurality of spiral or helical sections with alternate directions around a central axis
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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
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2002/065—Y-shaped blood vessels
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
Description
L'invention a pour objet des perfectionnements aux dispositifs pour le renfort de vaisseaux du corps humain, en particulier pour le traitement de la sténose. The invention relates to improvements to devices for reinforcing vessels of the human body, in particular for the treatment of stenosis.
Il peut se produire, notamment chez les personnes âgées, des rétrécissements des vaisseaux sanguins, artères ou veines, créant des problèmes de circulation graves tels notamment qus athérosclérose ou phlébites. Une méthode de traitement des sténoses consiste à installer à l'intérieur des veines ou artères à renforcer, des dispositifs de renfort communément désignés par le terme "stents" qui ont pour objet d'éviter le rétrécissement du vaisseau à l'endroit où le dispositif est posé, et/ou de réparer ou renforcer le vaisseau à cet endroit. It can occur, especially in the elderly, narrowing of blood vessels, arteries or veins, creating serious circulation problems such as atherosclerosis or phlebitis. One method of treating stenosis consists in installing inside the veins or arteries to be reinforced, reinforcing devices commonly designated by the term "stents" which are intended to avoid narrowing of the vessel at the place where the device is installed, and / or repair or strengthen the vessel at this location.
A l'heure actuelle, deux techniques de pose sont possibles, soit une pose par voie percutanée en utilisant la méthode développée par Seldinger, soit pose après avoir dénudé et ouvert chirurgicalement la voie d'accès. At the present time, two laying techniques are possible, either a percutaneous route using the method developed by Seldinger, or a pose after having stripped and surgically opened the access route.
Les praticiens doivent fréquemment intervenir sur les vaisseaux du corps humain (pose de filtres endoveineux, recanalisation des artères atteintes d'athérosclérose, etc). Practitioners must frequently intervene on the vessels of the human body (placement of endovenous filters, recanalization of arteries affected by atherosclerosis, etc.).
Il est parfois nécessaire de compléter le geste opératoire en posant un "stent". Ceci est souvent le cas pour les désobstructions artérielles qui se réalisent avec différents matériels du type ballon de dilatation ou systèmes d'usinage. It is sometimes necessary to complete the surgical procedure by placing a "stent". This is often the case for arterial obstructions which are carried out with different materials of the dilatation balloon type or machining systems.
Un "stent" est un renfort mis en place par voie percutanée (sous semi-percutanée) à l'intérieur du vaisseau. Sa fonction est de servir d'étai pour l'empêcher de se refermer spontanément, ou bien de maintenir plaquée sur elle même une partie de la paroi qui s'est détachée pendant la procédure, ou bien encore de prévenir l'occlusion future du vaisseau suite à la progression de la maladie athéromateuse. A "stent" is a reinforcement put in place percutaneously (under semi-percutaneous) inside the vessel. Its function is to serve as a forestay to prevent it from closing spontaneously, or to keep pressed against itself a part of the wall which has detached during the procedure, or even to prevent future occlusion of the vessel following the progression of atheromatous disease.
L'utilisation des "stents" s'est généralisée ces dernières années ; ils se montreraient particulièrement efficaces dans les "gros conduits". The use of "stents" has become widespread in recent years; they would be particularly effective in "large ducts".
Les "stents" sont réalisés le plus souvent à partir d'un système mécanique qui s'expanse une fois situé à l'endroit de l'utilisation. L'expansion est soit spontanée (systèmes élastiques), soit forcée mécaniquement (expansion avec un ballon de dilatation). The "stents" are most often made from a mechanical system which expands once located at the place of use. Expansion is either spontaneous (elastic systems) or mechanically forced (expansion with an expansion balloon).
L'utilisation des "stents" est aujourd'hui limitée aux parties droites des vaisseaux du simple fait de leur forme cylindrique qui ne permet pas de raccordement avec des dérivations. The use of "stents" is today limited to the straight parts of the vessels simply because of their cylindrical shape which does not allow connection with leads.
Pour renforcer un vaisseau présentant une bifurcation, le praticien en est réduit à placer dans chaque branche de la dérivation un "stent", laissant le "carrefour" de la dérivation non protégé avec tous les inconvénients et dangers que cela peut entraîner. To strengthen a vessel having a bifurcation, the practitioner is reduced to placing in each branch of the bypass a "stent", leaving the "crossroads" of the bypass unprotected with all the drawbacks and dangers that this can cause.
En outre, si le ',stent" qui a été posé n'est plus suffisant, et qu'il faut réintervenir en amont ou en aval du dispositif déjà en place, l'opération est particulièrement délicate, un ',stent" posé ne pouvant en pratique être retiré et ne pouvant non plus être raccordé avec un autre. In addition, if the ', stent "which has been placed is no longer sufficient, and it is necessary to intervene upstream or downstream of the device already in place, the operation is particularly delicate, a', stent" placed does not can in practice be removed and can not be connected with another.
L'invention a pour objet de répondre aux problèmes ci-dessus posés. The object of the invention is to respond to the above problems.
A cet effet, le dispositif pour renfort de vaisseaux du corps humain du type comprenant une armature allongée épousant la paroi interne du vaisseau à renforcer en suivant la forme générale d'une courbe hélicoïdale se caractérise conformément à l'invention en ce qu'en vue de permettre de réaliser des jonctions continues, c'est-à-dire des raccordements, entre au moins deux tels dispositifs, le dispositif comporte en un point de sa longueur des spires conformées pour permettre le verrouillage, sur ces spires, de spires conformées en correspondance d'un autre dispositif destiné à être accouplé au premier à la hauteur desdites spires conformées de cet autre dispositif. To this end, the device for reinforcing vessels of the human body of the type comprising an elongated frame conforming to the internal wall of the vessel to be reinforced by following the general shape of a helical curve is characterized in accordance with the invention in that in view to enable continuous junctions, that is to say connections, to be made between at least two such devices, the device comprises, at a point along its length, shaped turns to allow the locking, on these turns, of shaped turns correspondence of another device intended to be coupled to the first at the height of said shaped turns of this other device.
Selon une réalisation qui pourra souvent être utilisée, les spires spécialement conformées précitées de l'un et/ou de l'autre des dispositifs destinés à être accouplés ont un diamètre plus grand que celui des autres spires. According to an embodiment which can often be used, the aforementioned specially shaped turns of one and / or the other of the devices intended to be coupled have a larger diameter than that of the other turns.
L'invention, sa mise en oeuvre et ses applications apparaîtront plus clairement à l'aide de la description qui va suivre faite en référence aux dessins annexés dans lesquels
La figure 1 montre de façon schématique une bifurcation de vaisseaux équipés de "stents" selon l'art antérieur
la figure 2 montre de façon schématique comment la même bifurcation pourra être équipée de dispositifs de renforcement conçus selon l'invention
la figure 3 montre le système de la figure 2 avec les dispositifs verrouillés en place ;
la figure 4 montre l'utilisation d'un ressort particulier en relation avec une dérivation latérale
la figure 5 est une vue du ressort particulier de la figure 4 mais vu selon un autre angle, le ressort ayant été tourné d'environ 90 selon son axe
la figure 6 montre deux dispositifs dont l'un est destiné à former rallonge pour l'autre ;
la figure 7 montre les deux dispositifs de la figure 6 dans la position où la rallonge est en place.The invention, its implementation and its applications will appear more clearly with the aid of the description which follows, given with reference to the appended drawings in which
Figure 1 shows schematically a bifurcation of vessels equipped with "stents" according to the prior art
Figure 2 shows schematically how the same bifurcation can be equipped with reinforcement devices designed according to the invention
Figure 3 shows the system of Figure 2 with the devices locked in place;
Figure 4 shows the use of a particular spring in relation to a lateral bypass
Figure 5 is a view of the particular spring of Figure 4 but seen from another angle, the spring having been rotated by about 90 along its axis
Figure 6 shows two devices, one of which is intended to form an extension for the other;
Figure 7 shows the two devices of Figure 6 in the position where the extension is in place.
En se référant tout d'abord à la figure 1, on a montré une bifurcation de vaisseaux pouvant par exemple représenter la bifurcation aorto-iliaque. Referring first to FIG. 1, we have shown a bifurcation of vessels which can, for example, represent the aortoiliac bifurcation.
La bifurcation repérée 1 dans son ensemble serait donc constituée par la jonction de l'aorte 2 aux artères iliaques respectivement gauche 3 et droite 4. The bifurcation identified 1 as a whole would therefore be constituted by the junction of the aorta 2 with the left iliac arteries 3 and right respectively 4.
Supposant qu'un problème de sténose est rencontré à ce niveau, on peut disposer au niveau des endroits à protéger des renforts dits "stents" référencés respectivement 5, 6 et 7. Assuming that a stenosis problem is encountered at this level, it is possible to have, at the locations to be protected, so-called "stent" reinforcements referenced 5, 6 and 7 respectively.
Ces "stents" sont mis en place comme il a été indiqué précédemment. Ils sont constitués de manchons de diamètre approprié, et sont élastiques ou non élastiques selon les techniques de mise en place utilisées.These "stents" are put in place as indicated above. They consist of sleeves of appropriate diameter, and are elastic or non-elastic depending on the placement techniques used.
Les trois dispositifs de renfort 5, 6 et 7 laissent sans protection le centre de la bifurcation 1 lequel est particulièrement exposé compte tenu notamment de tensions pouvant apparaître au niveau des extrémités d'ouverture 5a, 6a, 7a des dispositifs 5, 6 et 7. The three reinforcing devices 5, 6 and 7 leave the center of the bifurcation 1 unprotected, which is particularly exposed taking into account in particular the tensions which may appear at the opening ends 5a, 6a, 7a of the devices 5, 6 and 7.
En se reportant maintenant à la figure 2, on expliquera comment peut être constitué un dispositif perfectionné de l'invention lequel permettra d'équiper parfaitement la bifurcation sans créer de contraintes au niveau de la jonction. Referring now to FIG. 2, we will explain how an improved device of the invention can be made up which will allow the bifurcation to be fitted out perfectly without creating constraints at the junction.
En se référant à la figure 2, on aperçoit que le système qui va être mis en place conformément à l'invention, comprend deux dispositifs de renfort référencés respectivement 8 et 9. Referring to FIG. 2, it can be seen that the system which will be set up in accordance with the invention comprises two reinforcing devices referenced 8 and 9 respectively.
Le dispositif de renfort 8 se présente sous la forme d'un ressort enroulé en hélice comportant deux parties, à savoir une partie 10 suivant une courbe hélicoïdale d'un diamètre donné correspondant sensiblement au diamètre interne de l'artère iliaque gauche 3 et une seconde partie 11 enroulée selon une courbe hélicoïdale d'un diamètre plus important correspondant à celui de l'aorte 2. The reinforcing device 8 is in the form of a helically wound spring comprising two parts, namely a part 10 following a helical curve of a given diameter corresponding substantially to the internal diameter of the left iliac artery 3 and a second part 11 wound around a helical curve with a larger diameter corresponding to that of the aorta 2.
Le second dispositif 9 se présente quant à lui sous la forme également d'un ressort hélicoïdal comportant une première partie 12 enroulée en hélice suivant un diamètre correspondant sensiblement à celui de l'artère iliaque 4, la partie 12 étant terminée par deux spires formant la partie 13 d'un diamètre équivalent à la partie 11 du dispositif 10. The second device 9 is in turn also in the form of a helical spring comprising a first part 12 wound in a helix according to a diameter corresponding substantially to that of the iliac artery 4, the part 12 being terminated by two turns forming the part 13 with a diameter equivalent to part 11 of the device 10.
On comprend donc que l'on puisse assembler le dispositif 9 sur le dispositif 8 comme suggéré par la flèche 14 et comme illustré en position à la figure 3 de façon à faire coïncider les spires 13 à la base de la partie des spires 11, les spires 13 se verrouillant dans les spires 11 et le renfort total de la bifurcation étant assuré dans les meilleures conditions y compris au carrefour. It is therefore understood that the device 9 can be assembled on the device 8 as suggested by the arrow 14 and as illustrated in position in FIG. 3 so as to make the turns 13 coincide at the base of the part of the turns 11, the turns 13 locking in turns 11 and the total reinforcement of the bifurcation being provided in the best conditions, including at the crossroads.
Pour la pose du dispositif, on pourra procéder par exemple de la façon suivante. For the installation of the device, one can for example proceed as follows.
On introduit le dispositif de renfort 8 à partir d'une ponction ou d'une incision de l'artère fémorale gauche on règle la position sous contrôle fluoroscopique. La mise en place s'effectue dans un cathéter approprié, le dispositif ressort étant en position comprimée et venant s'auto-bloquer en s'expansant à l'endroit voulu une fois relâché et largué en place. The reinforcement device 8 is introduced from a puncture or an incision in the left femoral artery and the position is adjusted under fluoroscopic control. The placement is carried out in a suitable catheter, the spring device being in the compressed position and coming to self-block by expanding to the desired place once released and released in place.
Le dispositif étant ainsi en place dans la position illustrée et schématisée à la figure 2, on introduit le deuxième dispositif 9 à partir d'une ponction ou incision de l'artère fémorale droite, toujours au moyen d'un cathéter le ressort étant en position comprimée. Le dispositif est amené juqu'au niveau où la connection doit se réaliser et il est largué et laché de façon que les spires 13 viennent s'expanser au niveau des deux spires inférieures de la partie référencée 11 située dans l'aorte du dispositif 8. Ainsi largué en place, le dispositif vient s'auto-bloquer et se verrouiller, les deux parties 8, 9 du dispositif s'auto-bloquant mutuellement dans la position illustrée à la figure 3. The device being thus in place in the position illustrated and shown diagrammatically in FIG. 2, the second device 9 is introduced from a puncture or incision of the right femoral artery, still by means of a catheter, the spring being in position compressed. The device is brought up to the level where the connection is to be made and it is released and released so that the turns 13 expand at the level of the two lower turns of the part referenced 11 located in the aorta of the device 8. Thus released in place, the device comes to self-lock and lock, the two parts 8, 9 of the device self-locking mutually in the position illustrated in FIG. 3.
En se reportant maintenant à la figure 4, on a illustré une conception particulière d'un ressort 15 pouvant permettre un verrouillage plus aisé d'un dispositif par exemple devant être placé en fonction bifurquée latérale. Referring now to Figure 4, there is illustrated a particular design of a spring 15 which can allow easier locking of a device for example to be placed in lateral bifurcated function.
Comme on le voit à la figure 4, le ressort 15 comporte un certain nombre de boucles telles que référencées 16 en forme de U qui laissent des ouvertures entre les spires et facilitent l'introduction d'une spire telle que la spire 17 de départ d'un ressort 18, introduite en place latéralement à l'état comprimé. As can be seen in FIG. 4, the spring 15 comprises a number of loops as referenced 16 in the shape of a U which leave openings between the turns and facilitate the introduction of a turn such as the starting turn 17 d 'a spring 18, inserted in place laterally in the compressed state.
Dans l'exemple schématisé à la figure 4, on a supposé que le ressort 15 était placé dans un vaisseau schématisé 19 et que le ressort 18 était placé dans un vaisseau latéral plus petit 20. On remarque que la spire 17 est nettement plus large que les spires de la partie 18, ceci en vue de faciliter le verrouillage de la spire 17 en position dans le ressort 15 et à prévenir tout déplacement de l'ensemble ainsi verrouillé lorsqu'il est mis en place. In the example shown diagrammatically in FIG. 4, it has been assumed that the spring 15 was placed in a schematic vessel 19 and that the spring 18 was placed in a smaller lateral vessel 20. It is noted that the coil 17 is significantly wider than the turns of part 18, this in order to facilitate the locking of the turn 17 in position in the spring 15 and to prevent any displacement of the assembly thus locked when it is put in place.
A la figure 5, on a représenté le ressort 15 tourné d'environ 90" dans le sens de la flèche 21 par rapport à la position du même ressort illustré à la figure 4, et ceci de façon à mieux comprendre la forme d'enroulement de ce ressort. In Figure 5, there is shown the spring 15 rotated about 90 "in the direction of arrow 21 relative to the position of the same spring illustrated in Figure 4, and this in order to better understand the form of winding of this spring.
En se référant à la figure 6, on a illustré un dispositif de renfort constitué par un ressort hélicoïdal 22 et en 23 un autre dispositif de ressort destiné à constituer une rallonge du dispositif 22. Referring to FIG. 6, there is illustrated a reinforcement device constituted by a helical spring 22 and at 23 another spring device intended to constitute an extension of the device 22.
Le dispositif 23 formant rallonge comporte essentiellement des spires 24 de même diamètre que celui du dispositif 22, et à une extrémité, un faible nombre des spires, par exemple deux dans l'exemple illustré, spires référencées 25 d'un diamètre légèrement plus important. The device 23 forming an extension essentially comprises turns 24 of the same diameter as that of the device 22, and at one end, a small number of turns, for example two in the example illustrated, turns referenced 25 with a slightly larger diameter.
De cette façon, on comprend qu'il est possible de verrouiller les spires 25 de plus grand diamètre à l'intérieur des spires du dispositif 22 après mise en place habituelle sous compression du ressort et larguage dans la position voulue, avec recouvrement des deux premières spires 25 de la rallonge 23 avec les deux dernières spires du dispositif 22 précédemment en place. In this way, it is understood that it is possible to lock the turns 25 of larger diameter inside the turns of the device 22 after usual positioning under compression of the spring and dropping in the desired position, with overlap of the first two turns 25 of the extension 23 with the last two turns of the device 22 previously in place.
On comprend que de cette manière, il est possible selon l'invention de rallonger des dispositifs de renforcement des vaisseaux en cas de besoin, par exemple dans le cas d'une progression de la maladie athêromateuse d'un patient déjà équipé de "stents". It is understood that in this way, it is possible according to the invention to lengthen vessels strengthening devices if necessary, for example in the case of a progression of atheromatous disease of a patient already equipped with "stents" .
Bien entendu, de nombreuses formes et variantes possibles dans la réalisation des "ressorts" qui constituent les dispositifs de renforcement conformes à l'invention peuvent être imaginées et utilisées. Of course, many possible forms and variants in the production of "springs" which constitute the reinforcing devices according to the invention can be imagined and used.
De préférence, on utilisera pour constituer des dispositifs des aciers bio-compatibles à bonne mémoire élastique tels notamment que des aciers spéciaux fortement chargés au cobalt et au chrome. Preferably, bio-compatible steels with good elastic memory will be used to form devices, such as special steels heavily loaded with cobalt and chromium.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9108376A FR2678508B1 (en) | 1991-07-04 | 1991-07-04 | DEVICE FOR REINFORCING VESSELS OF THE HUMAN BODY. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9108376A FR2678508B1 (en) | 1991-07-04 | 1991-07-04 | DEVICE FOR REINFORCING VESSELS OF THE HUMAN BODY. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2678508A1 true FR2678508A1 (en) | 1993-01-08 |
| FR2678508B1 FR2678508B1 (en) | 1998-01-30 |
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ID=9414710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9108376A Expired - Fee Related FR2678508B1 (en) | 1991-07-04 | 1991-07-04 | DEVICE FOR REINFORCING VESSELS OF THE HUMAN BODY. |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2678508B1 (en) |
Cited By (73)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0647148A1 (en) * | 1992-06-18 | 1995-04-12 | American Biomed, Inc. | Method and apparatus for making a stent |
| DE4341504C1 (en) * | 1993-12-06 | 1995-04-13 | Staudacher Gerhard Dr Med Vet | Device for supporting a tubular structure |
| WO1995021592A1 (en) * | 1994-02-09 | 1995-08-17 | Boston Scientific Technology Inc. | Bifurcated endoluminal prosthesis |
| WO1996014028A1 (en) * | 1994-11-03 | 1996-05-17 | Divysio Solutions (1995) Ltd. | Expandable bifurcated stent and method for delivery of same |
| EP0722701A1 (en) * | 1995-01-19 | 1996-07-24 | Cordis Europa N.V. | Y-shaped stent and method for positioning such a stent |
| WO1996034580A1 (en) * | 1995-05-04 | 1996-11-07 | Alain Dibie | Endoprosthesis for the treatment of blood-vessel bifurcation stenosis and purpose-built installation device |
| FR2733689A1 (en) * | 1995-08-07 | 1996-11-08 | Dibie Alain | Endoprosthesis with installation device for treatment of blood-vessel bifurcation stenosis |
| FR2737969A1 (en) * | 1995-08-24 | 1997-02-28 | Rieu Regis | INTRALUMINAL ENDOPROSTHESIS IN PARTICULAR FOR ANGIOPLASTY |
| US5607444A (en) * | 1993-12-02 | 1997-03-04 | Advanced Cardiovascular Systems, Inc. | Ostial stent for bifurcations |
| WO1997040779A1 (en) * | 1996-04-25 | 1997-11-06 | Corvita Europe | Intraluminal endoprosthesis for ramifying the ducts of a human or animal body and method of manufacture thereof |
| GR1002877B (en) * | 1997-02-26 | 1998-03-11 | Endovascular retrievable stent | |
| EP0820726A3 (en) * | 1996-07-26 | 1998-04-15 | Target Therapeutics, Inc. | Aneurysm closure device assembly |
| US5755734A (en) * | 1996-05-03 | 1998-05-26 | Medinol Ltd. | Bifurcated stent and method of making same |
| US5772668A (en) * | 1992-06-18 | 1998-06-30 | American Biomed, Inc. | Apparatus for placing an endoprosthesis |
| WO1998027893A2 (en) | 1996-12-23 | 1998-07-02 | Prograft Medical, Inc. | Kink resistant bifurcated prosthesis |
| WO1998033454A1 (en) * | 1997-01-31 | 1998-08-06 | Ernst Peter Strecker | Stent for treating pathological body vessels |
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