FR2608418A1 - Device allowing obstruction of a natural channel such as an artery, in particular in a predetermined zone - Google Patents
Device allowing obstruction of a natural channel such as an artery, in particular in a predetermined zone Download PDFInfo
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- FR2608418A1 FR2608418A1 FR8618220A FR8618220A FR2608418A1 FR 2608418 A1 FR2608418 A1 FR 2608418A1 FR 8618220 A FR8618220 A FR 8618220A FR 8618220 A FR8618220 A FR 8618220A FR 2608418 A1 FR2608418 A1 FR 2608418A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12099—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder
- A61B17/12109—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12099—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder
- A61B17/12109—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel
- A61B17/12113—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel within an aneurysm
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/1214—Coils or wires
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/12168—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device having a mesh structure
- A61B17/12172—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device having a mesh structure having a pre-set deployed three-dimensional shape
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/12168—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device having a mesh structure
- A61B17/12177—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device having a mesh structure comprising additional materials, e.g. thrombogenic, having filaments, having fibers or being coated
-
- 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
- A61F2/01—Filters implantable into blood vessels
- A61F2002/016—Filters implantable into blood vessels made from wire-like elements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
- A61F2230/0028—Shapes in the form of latin or greek characters
- A61F2230/005—Rosette-shaped, e.g. star-shaped
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0063—Three-dimensional shapes
- A61F2230/0073—Quadric-shaped
- A61F2230/0078—Quadric-shaped hyperboloidal
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Reproductive Health (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Neurosurgery (AREA)
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
Description
L'invention se rapporte à un dispositif permettant de provoquer de manière progressive l'obstruction d'un canal naturel tel une artère notamment dans une zone prédéterminée. The invention relates to a device making it possible to gradually cause the obstruction of a natural canal such as an artery, in particular in a predetermined area.
Plus particulièrement mais non limitativement, l'invention intéresse un dispositif permettant d'obtenir l'obstruction progressive par thrombose d'un canal traversant une lésion vasculaire telle un anévrisme notamment un anévrisme fusiforme. More particularly but not limited to, the invention relates to a device making it possible to obtain progressive obstruction by thrombosis of a channel crossing a vascular lesion such as an aneurysm, in particular a spindle aneurysm.
En effet, on distingue principalement deux types d'anévrismes, les anévrismes fusiformes et les anévrismes sacciformes. Indeed, there are mainly two types of aneurysms, spindle aneurysms and sacciform aneurysms.
Les premiers sont traversés par le vaisseau autour duquel ils se forment tandis que les seconds s'ouvrent dans la paroi d'un vaisseau. The former are crossed by the vessel around which they form while the latter open into the wall of a vessel.
Dans le domaine du traitement curatif des anévrismes fusiformes, l'évolution des techniques opératoires telles celles dites de mise à plat-greffe (se reporter à l'ouvrage intitule techniques de chirurgie vasculaire DUBOST et CARPENTIER, édition
MASSON) permet aujourd'hui d'excellents résultats.In the field of curative treatment of spindle aneurysms, the evolution of operating techniques such as those called flat grafting (see the book entitled techniques of vascular surgery DUBOST and CARPENTIER, edition
MASSON) today provides excellent results.
Malheureusement, de nombreux malades, notamment en raison d'une insuffisance respiratoire ou cardiaque, ne peuvent bénéficier des techniques chi rurgi cales précitées car celles-ci sont tout de même relativement agressives. Unfortunately, many patients, notably due to respiratory or cardiac insufficiency, cannot benefit from the abovementioned surgical techniques because they are still relatively aggressive.
Une autre technique de traitement connue et moins traumatisante pour le patient consiste, dans un premier temps, au moyen d'une prothèse vasculaire à réaliser un pontage entre l'amont et l'aval de l'anévrisme puis dans un second temps à obstruer l'anévrisme par exemple au moyen d'un corps artificiel. Another known and less traumatic treatment technique for the patient consists, firstly, by means of a vascular prosthesis, bypassing the upstream and downstream of the aneurysm, then in a second time by obstructing the aneurysm for example by means of an artificial body.
La paroi de l'anévrisme, une fois le canal de ce dernier obstrué, ne présente plus de risque de rupture et le pontage supplée à son obstruction. The wall of the aneurysm, once the canal of the latter is obstructed, no longer presents a risk of rupture and bypass surgery compensates for its obstruction.
Une première technique d'obstruction consiste à former un bouchon dans l'anévrisme en injectant dans ce#ui-ci notamment au moyen d'un cathéter empruntant la voie artérielle, une substance polymérisable. A first obstruction technique consists in forming a plug in the aneurysm by injecting into it # ui in particular by means of a catheter via the arterial route, a polymerizable substance.
La substance en question est injectée dans l'anévrisme sous la forme d'un fil continu qui s'enroule de façon aléatoire et forme, en s'agglutinant, le bouchon précité. The substance in question is injected into the aneurysm in the form of a continuous wire which is wound in a random fashion and forms, by clumping, the abovementioned stopper.
Cette technique d'obstruction tend à être abandonnée car elle présente un risque important pour le patient. This obstruction technique tends to be abandoned because it presents a significant risk for the patient.
En effet, il s'est avéré qu'avant sa polymérisation, des particules de substance se détachent parfois de l'agrégat et viennent alors obstruer des canaux de faible taille provoquant ainsi une embolie chez le patient. Indeed, it turned out that before its polymerization, particles of substance sometimes detach from the aggregate and then come to obstruct small channels thus causing embolism in the patient.
Pour remédier à cet inconvénient, plutôt que d'utiliser une substance polymérisable dispersée en spires, on préfère mettre en oeuvre une seconde technique et notamment un dispositif (FR-A-2.302.755) comprenant un ballonnet qui, porté par un cathéter, peut après introduction puis expansion dans le canal ou la zone à obstruer être largué du dit cathéter. To remedy this drawback, rather than using a polymerizable substance dispersed in turns, it is preferred to use a second technique and in particular a device (FR-A-2,302,755) comprising a balloon which, carried by a catheter, can after introduction and then expansion in the canal or the area to be obstructed, be released from said catheter.
Ce dispositif est efficace mais surtout utilisable dans le cas d'un anévrisme sacciforme. This device is effective but above all usable in the case of a sacciform aneurysm.
En effet son utilisation dans le cas d'un anévrisme fusiforme est, malgré la présence du pontage plus avant évoqué, traumatisante pour le patient car elle provoque l'obstruction relativement brusque du canal de l'anévrisme ainsi traité. In fact, its use in the case of a fusiform aneurysm is, despite the presence of the bypass mentioned above, traumatic for the patient because it causes the relatively abrupt obstruction of the aneurysm canal thus treated.
Dans le cas par exemple d'un anévrisme de l'aorte sous rénale, une troisième technique consiste à ligaturer par voie sous péritonéale les artères iliaques primitives, mais cette technique reste encore relativement traumatisante. In the case, for example, of a renal aortic aneurysm, a third technique consists in ligating the primary iliac arteries subperitoneally, but this technique still remains relatively traumatic.
Une dernière technique consiste à injecter par voie artérielle des spires thrombosantes. A final technique consists in injecting thrombosing turns by arterial route.
Un résultat que l'invention vise à obtenir est un dispositif du type précité qui permette l'obstruction progressive, notamment par thrombose d'un canal naturel dans lequel il est place,
A cet effet, l'invention a pour objet un dispositif d'obstruction du type précité notamment caractérisé en ce qu'il comprend, liés entre eux
- au moins un moyen d'ancrage dans les parois du canal au niveau de la zone prédéterminée,
- au moins un moyen de formation d'au moins un agrégat tel un caillot à partir du fluide notamment du sang traversant le dispositif,
- au moins un moyen de rétention de l'agrégat forme par le moyen précité et dispose pour assurer un tel effet de rétention.A result which the invention aims to obtain is a device of the aforementioned type which allows progressive obstruction, in particular by thrombosis of a natural channel in which it is placed,
To this end, the subject of the invention is an obstruction device of the aforementioned type, in particular characterized in that it comprises, linked together
- at least one anchoring means in the walls of the channel at the predetermined area,
at least one means for forming at least one aggregate such as a clot from the fluid, in particular from the blood passing through the device,
- At least one means of retention of the aggregate forms by the aforementioned means and has to ensure such a retention effect.
L'invention sera bien comprise à l'aide de la description ci-apres faite à titre d'exemple non limitatif, en regard du dessin ci-annexé qui représente schématiquement
- figure I : une vue simplifiée du dispositif,
- figure 2 : une forme préférée de réalisation du dispositif vu en coupe longitudinale,
- figures 3 à 6 : un dispositif selon l'invention dans différentes phases du processus de mise en oeuvre et d'utilisation.The invention will be better understood with the aid of the description below given by way of nonlimiting example, with reference to the attached drawing which schematically represents
- Figure I: a simplified view of the device,
FIG. 2: a preferred embodiment of the device seen in longitudinal section,
- Figures 3 to 6: a device according to the invention in different phases of the implementation and use process.
En se reportant au dessin, on voit un dispositif 1 permettant de provoquer de manière progressive l'obstruction d'un canal naturel 2 et ce dans une zone prédéterminée 3 dite zone d'action. Referring to the drawing, we see a device 1 for gradually causing the obstruction of a natural channel 2 and this in a predetermined area 3 called action area.
De manière non limitative, le dispositif 1 est représenté dans différentes phases du processus de mise en oeuvre et d'utilisation pour l'obstruction du canal 2 d'un anévrisme 4 par exemple d'un anévrisme fusiforme de l'aorte sous rénale. Without limitation, the device 1 is shown in different phases of the process of implementation and use for the obstruction of the channel 2 of an aneurysm 4 for example of a spindle-shaped aneurysm of the renal aorta.
On note que l'écoulement de fluide et notamment de sang dans le canal précité est sensiblement laminaire et ce au moins en amont de la zone d'action 3 du dispositif. It is noted that the flow of fluid and in particular of blood in the aforementioned channel is substantially laminar and this at least upstream of the action zone 3 of the device.
L'écoulement laminaire précité est représenté par une flèche 5 dont l'orientation indique le sens privilégié d'écoulement et dont la direction se trouve être sensiblement parallèle aux parois 21 du canal 2. The aforementioned laminar flow is represented by an arrow 5 whose orientation indicates the preferred direction of flow and whose direction is found to be substantially parallel to the walls 21 of the channel 2.
On remarque (figure 3) que le dispositif 1 est classiquement mis en place au niveau de sa zone d'action 3 au moyen d'un cathéter lanceur 6. Note (FIG. 3) that the device 1 is conventionally placed at the level of its action zone 3 by means of a launcher catheter 6.
Le dispositif est caractérisé en ce qu'il comprend, lies entre eux
- au moins un moyen d'ancrage 7 dans les parois 21 du canal 2 au niveau de la zone 3 prédéterminée,
- au moins un moyen 8 de formation d'au moins un agrégat 9 tel un caillot à partir du fluide notamment du sang traversant le dispositif,
- au moins un moyen 10 de rétention de l'agrégat 9 formé par le moyen 8 précité et dispose pour assurer un tel effet de rétention.The device is characterized in that it comprises, linked together
at least one anchoring means 7 in the walls 21 of the channel 2 at the level of the predetermined zone 3,
at least one means 8 for forming at least one aggregate 9 such as a clot from the fluid, in particular from the blood passing through the device,
- At least one means 10 for retaining the aggregate 9 formed by the aforementioned means 8 and arranged to provide such a retention effect.
Tel que cela est représenté, l'introduction du dispositif jusqu'au niveau d'un anévrisme fusiforme 4 par exemple un anévrisme de l'aorte sous rénale a lieu par voie artérielle notamment en empruntant successivement l'artère fémorale, l'artère iliaque externe puis l'artère iliaque primitive (non représentées). As shown, the introduction of the device to the level of a spindle aneurysm 4, for example an aortic aneurysm of the renal aorta takes place by arterial route, in particular by successively borrowing the femoral artery, the external iliac artery then the primary iliac artery (not shown).
Le dispositif est ensuite largué dans une zone d'action 3 prédéterminée notamment dans le canal 2 interne à l'anévrisme 4 puis le cathéter est retire. The device is then released into a predetermined action zone 3, in particular in the channel 2 internal to the aneurysm 4, then the catheter is withdrawn.
Sensiblement à l'issue de son larguage, le dispositif 1 s'ancre dans les parois 21 du canal 2 par le moyen 7 qu'il comprend à cet effet. Significantly at the end of its release, the device 1 is anchored in the walls 21 of the channel 2 by the means 7 which it includes for this purpose.
Dans un premier temps, le dispositif 1 n'obstrue pas le canal 2 et ce n'est que lorsque le moyen de formation 8 d'agrégats 9 tels des caillots, commence à faire son effet que la section du passage du canal commence à diminuer. Initially, the device 1 does not obstruct the channel 2 and it is only when the means of formation 8 of aggregates 9 such as clots, begins to take effect that the section of the passage of the channel begins to decrease .
L'évolution constatée dans la formation d'agrégats est généralement centrifuge. The evolution observed in the formation of aggregates is generally centrifugal.
On remarque que les agrégats 9 ou caillots sont retenus au sein du dispositif 1 grace au moyen de rétention 10 qu'il comprend. It is noted that the aggregates 9 or clots are retained within the device 1 thanks to the retention means 10 which it comprises.
Il est important de signaler que ce moyen de rétention doit être particulièrement efficace afin d'éviter toute embolie distale. It is important to note that this means of retention must be particularly effective in order to avoid any distal embolism.
On comprend donc que l'obstruction du canal 2 de l'anévrisme 4 a lieu progressivement pratiquement au rythme de la formation des caillots par le sang qui traverse cet anévrisme. It is therefore understood that the obstruction of the channel 2 of the aneurysm 4 takes place gradually practically at the rate of the formation of clots by the blood which passes through this aneurysm.
Bien entendu, un pontage artificiel entre l'amont et l'aval de l'anévrisme reste indispensable dans ce type d'obstruction des anévrismes fusiformes quelle que soit leur localisation. Of course, an artificial bypass between the upstream and downstream of the aneurysm remains essential in this type of obstruction of spindle aneurysms whatever their location.
Selon l'invention, le moyen de formation 8 comprend au moins un élément actif 11 en matériau favorisant le phénomène d'agrégation du fluide circulant à son contact. According to the invention, the training means 8 comprises at least one active element 11 made of material promoting the phenomenon of aggregation of the fluid flowing in contact with it.
De préférence, le matériau utilisé pour constituer l'élément actif 11 possède des propriétés thrombosantes. Preferably, the material used to constitute the active element 11 has thrombosing properties.
Conformément à une autre caractéristique de l'invention, le moyen de formation 8 comprend au moins un organe turbulateur 13 permettant au moins localement au niveau du dispositif 1 de transformer l'écoulement laminaire 5 de fluide qui pénètre dans ce dispositif en un écoulement turbulent 12 (figure 5). In accordance with another characteristic of the invention, the forming means 8 comprises at least one turbulating member 13 allowing at least locally at the level of the device 1 to transform the laminar flow 5 of fluid which enters this device into a turbulent flow 12 (figure 5).
Tel que cela est connu les phénomènes d'écoulement turbulent sont thrombosant au sein d'un système vasculaire. As is known, the turbulent flow phenomena are thrombosing within a vascular system.
Si l'on cherche habituellement à éviter la thrombogènèse, et ce notamment en chirurgie de reconstruction vasculaire, ici au contraire? on exploite le phénomène turbulent pour obstruer un anévrisme par thrombose. If we usually try to avoid thrombogenesis, especially in vascular reconstruction surgery, here on the contrary? the turbulent phenomenon is exploited to obstruct an aneurysm by thrombosis.
L'une ou l'autre de ces dispositions que sont les formes de réalisation du moyen de formation -8 d'agrégat se sont avérées efficaces mais de préférence, le moyen de formation 8 comprend, d'une part, au moins un élément actif 11 en matériau thrombosant et, d'autre part, au moins un organe turbulateur 13. One or other of these arrangements, which are the embodiments of the aggregate -8 training means, have been found to be effective but preferably, the training means 8 comprises, on the one hand, at least one active element 11 made of thrombosing material and, on the other hand, at least one turbulating member 13.
Selon l'invention, l'organe turbulateur 13 que comporte le dispositif 1 consiste en au moins un faisceau d'enveloppe sensiblement conique, de branches 14 longilignes élastiquement flexibles qui sont réunies au niveau de l'une 15 de leurs extrémités 15, 16 et dont la section transversale est de nature à favoriser la formation de turbulences. According to the invention, the turbulating member 13 that comprises the device 1 consists of at least one bundle of substantially conical envelope, elongated flexible elongate branches 14 which are joined at one of their ends 15, 16 and whose cross section is likely to promote the formation of turbulence.
Avantageusement, la section transversale des branches longilignes 14 est sensiblement rectiligne. Advantageously, the cross section of the elongated branches 14 is substantially rectilinear.
De préférence, la section transversale des branches longilignes 14 est sensiblement curviligne. Preferably, the cross section of the elongated branches 14 is substantially curvilinear.
Avantageusement, les branches longilignes 14 sont également en matériau thrombosant. Advantageously, the elongated branches 14 are also made of thrombosing material.
Conformément à l'invention, le moyen d'ancrage 10 consiste en une pluralité de crochets 101, chacun porte et orienté à l'extrémité libre 16 d'au moins certaines des branches longilignes 14 de l'organe turbulateur 13 de manière à coopérer avec la paroi 21 du canal 2 dans lequel le dispositif 1 est mis en place. According to the invention, the anchoring means 10 consists of a plurality of hooks 101, each carrying and oriented at the free end 16 of at least some of the elongated branches 14 of the turbulating member 13 so as to cooperate with the wall 21 of the channel 2 in which the device 1 is put in place.
Dans une forme préférée de réalisation, le dispositif d'obstruction comprend deux organes turbulateurs 13 disposés de manière telle que leurs branches longitudinales soient réunies sensiblement dans sa partie médiane 17. In a preferred embodiment, the obstruction device comprises two turbulating members 13 arranged so that their longitudinal branches are joined substantially in its middle part 17.
Avantageusement, il n'y a pas de solution de continuité entre les branches des deux organes turbulateurs 13. Advantageously, there is no solution of continuity between the branches of the two turbulator bodies 13.
Notamment, les organes turbulateurs sont formés par la réunion par exemple au moyen d'une bague 18 de tiges 19 convenablement courbées et de section transversale telle que prêdéfi nie. In particular, the turbulator members are formed by joining together, for example by means of a ring 18 of suitably curved rods 19 and of cross section as preset.
Ainsi, le dispositif d'obstruction prend globalement l'allure d'une bobine de diabolo. Thus, the obstruction device generally takes the form of a diabolo coil.
Cette disposition va permettre la formation de caillots 9 de part et d'autre du point de jonction des branches longilignes 13 et notamment de deux caillots amont et aval en forme de cône dont les sommets se situent dàns la partie médiane du dispositif. This arrangement will allow the formation of clots 9 on either side of the junction of the elongated branches 13 and in particular of two upstream and downstream cone-shaped clots whose vertices are located in the middle part of the device.
La formation du caillot aval est principalement due à la zone de stase située en aval du dispositif 17. The formation of the downstream clot is mainly due to the stasis zone located downstream of the device 17.
Il existe également un flux turbulent rétrograde formé par la revascularisation rétrograde des artières iliaques primitives et internes, lequel flux est dû au pontage généralement branché sur les fémorales communes. There is also a retrograde turbulent flow formed by the retrograde revascularization of the primitive and internal iliac arteries, which flow is due to the bypass generally connected to the common femoral ones.
Ce flux rétrograde turbulent s'oppose en outre à la migration des caillots en aval. This turbulent retrograde flow also opposes the migration of clots downstream.
Selon l'invention, d'une part, l'élément actif 11 en matériau thrombosant est constitué d'une pluralité de fibres 20 de ce matériau et, d'autre part, ces fibres 20 sont associées aux branches longilignes 13 d'au moins un organe turbulateur sensiblement au niveau de leurs extrémités 15 de jonction. According to the invention, on the one hand, the active element 11 made of thrombosing material consists of a plurality of fibers 20 of this material and, on the other hand, these fibers 20 are associated with elongated branches 13 of at least a turbulating member substantially at their junction ends 15.
Le moyen de rétention 10 n'existe pas vraiment en tant que tel mais il est forme d'une part, par les branches 13 principalement au niveau de leur point de jonction et, d'autre part, par les fibres 20 de l'élément actif 11. The retention means 10 does not really exist as such but it is formed on the one hand, by the branches 13 mainly at their junction point and, on the other hand, by the fibers 20 of the element active 11.
Aussi, dira-t-o-n que le moyen de rétention 10 est principalement forme par les surfaces des diverses parties constitutives du dispositif d'obstruction. Also, will we say that the retention means 10 is mainly formed by the surfaces of the various constituent parts of the obstruction device.
Comme cela indique plus haut et est représenté (figure 3), le dispositif 1 est amené dans la zone 3 d'action au moyen d'un cathéter lanceur 6. As indicated above and is shown (FIG. 3), the device 1 is brought into the zone 3 of action by means of a launcher catheter 6.
Pour ce faire, le dispositif se trouve place dans un étui tubulaire 61 de diamètre extérieur compatible avec celui de la plus petite des voies vasculaires qu'il empreinte. To do this, the device is placed in a tubular case 61 of external diameter compatible with that of the smallest of the vascular pathways which it imprints.
Pour être mis en position, le dispositif est ejecté de l'étui 61 au moyen d'un poussoir 62. To be placed in position, the device is ejected from the case 61 by means of a pusher 62.
Les branches flexibles du ou des organes turbulateurs 13 se détendent alors et s'ancrent par leurs crochets 101 aux
parois 21 du canal 2.The flexible branches of the turbulator or organs 13 then relax and are anchored by their hooks 101 to the
walls 21 of channel 2.
Comme cela a été évoqué, le cathéter 6 est ensuite retire. As mentioned, the catheter 6 is then withdrawn.
L'étui 61 sera avanta#geusement équipé d'une bague radio-opaque (non représentée) et d'un organe permettant d'obstruer temporairement l'artère par laquelle il est introduit. The case 61 will advantageously be equipped with a radio-opaque ring (not shown) and with a member making it possible to temporarily obstruct the artery by which it is introduced.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8618220A FR2608418B1 (en) | 1986-12-18 | 1986-12-18 | DEVICE FOR PROVIDING THE OBSTRUCTION OF A NATURAL CHANNEL SUCH AS AN ARTERY IN PARTICULAR IN A PREDETERMINED AREA |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8618220A FR2608418B1 (en) | 1986-12-18 | 1986-12-18 | DEVICE FOR PROVIDING THE OBSTRUCTION OF A NATURAL CHANNEL SUCH AS AN ARTERY IN PARTICULAR IN A PREDETERMINED AREA |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2608418A1 true FR2608418A1 (en) | 1988-06-24 |
| FR2608418B1 FR2608418B1 (en) | 1992-07-31 |
Family
ID=9342326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8618220A Expired - Lifetime FR2608418B1 (en) | 1986-12-18 | 1986-12-18 | DEVICE FOR PROVIDING THE OBSTRUCTION OF A NATURAL CHANNEL SUCH AS AN ARTERY IN PARTICULAR IN A PREDETERMINED AREA |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2608418B1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0341039A1 (en) * | 1988-05-04 | 1989-11-08 | Triangle Research And Development Corporation | Transendoscopic implant capsule |
| EP0448891A1 (en) * | 1990-03-28 | 1991-10-02 | LEFEBVRE, Jean-Marie | Blood vessel implant having legs with opposing points |
| FR2679127A1 (en) * | 1991-07-16 | 1993-01-22 | Cleef Jean Francois Van | INTRAVENOUS OBSTRUCTION OR HOLDING DEVICE. |
| EP0778006A1 (en) * | 1995-12-04 | 1997-06-11 | Target Therapeutics, Inc. | Fibered micro vaso-occlusive devices |
| EP0800791A1 (en) * | 1996-04-10 | 1997-10-15 | Target Therapeutics, Inc. | Soft-ended fibred micro vaso-occlusive device |
| US5792155A (en) * | 1991-07-16 | 1998-08-11 | Van Cleef; Jean-Francois | Process for partially or totally flattening a vein |
| EP0882428A2 (en) * | 1997-06-05 | 1998-12-09 | Arterial Vascular Engineering, Inc. | Intravascular occlusion device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2302755A1 (en) * | 1975-03-03 | 1976-10-01 | Debrun Gerard | Lesion sealing balloon production process - involves immersing coagulant coated stepped metal rod in latex bath to form finger |
| US4282875A (en) * | 1979-01-24 | 1981-08-11 | Serbinenko Fedor A | Occlusive device |
| US4425908A (en) * | 1981-10-22 | 1984-01-17 | Beth Israel Hospital | Blood clot filter |
| CA1214702A (en) * | 1982-09-30 | 1986-12-02 | Robert W. Rand | Medical apparatus for inducing scar tissue formation in a body |
-
1986
- 1986-12-18 FR FR8618220A patent/FR2608418B1/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2302755A1 (en) * | 1975-03-03 | 1976-10-01 | Debrun Gerard | Lesion sealing balloon production process - involves immersing coagulant coated stepped metal rod in latex bath to form finger |
| US4282875A (en) * | 1979-01-24 | 1981-08-11 | Serbinenko Fedor A | Occlusive device |
| US4425908A (en) * | 1981-10-22 | 1984-01-17 | Beth Israel Hospital | Blood clot filter |
| CA1214702A (en) * | 1982-09-30 | 1986-12-02 | Robert W. Rand | Medical apparatus for inducing scar tissue formation in a body |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0341039A1 (en) * | 1988-05-04 | 1989-11-08 | Triangle Research And Development Corporation | Transendoscopic implant capsule |
| EP0448891A1 (en) * | 1990-03-28 | 1991-10-02 | LEFEBVRE, Jean-Marie | Blood vessel implant having legs with opposing points |
| FR2660189A1 (en) * | 1990-03-28 | 1991-10-04 | Lefebvre Jean Marie | DEVICE FOR IMPLANTING IN A VESSEL WITH ANTAGONISTIC TOOTH SIDE LEGS. |
| US5792155A (en) * | 1991-07-16 | 1998-08-11 | Van Cleef; Jean-Francois | Process for partially or totally flattening a vein |
| FR2679127A1 (en) * | 1991-07-16 | 1993-01-22 | Cleef Jean Francois Van | INTRAVENOUS OBSTRUCTION OR HOLDING DEVICE. |
| WO1993001764A1 (en) * | 1991-07-16 | 1993-02-04 | Cleef Jean Francois Van | Intravenous device for the partial or total flattening of a vein |
| US5843118A (en) * | 1995-12-04 | 1998-12-01 | Target Therapeutics, Inc. | Fibered micro vaso-occlusive devices |
| EP0778006A1 (en) * | 1995-12-04 | 1997-06-11 | Target Therapeutics, Inc. | Fibered micro vaso-occlusive devices |
| EP0800791A1 (en) * | 1996-04-10 | 1997-10-15 | Target Therapeutics, Inc. | Soft-ended fibred micro vaso-occlusive device |
| US5792154A (en) * | 1996-04-10 | 1998-08-11 | Target Therapeutics, Inc. | Soft-ended fibered micro vaso-occlusive devices |
| US5976162A (en) * | 1996-04-10 | 1999-11-02 | Target Therapeutics, Inc. | Soft-ended fibered micro vaso-occlusive devices |
| EP0882428A2 (en) * | 1997-06-05 | 1998-12-09 | Arterial Vascular Engineering, Inc. | Intravascular occlusion device |
| EP0882428A3 (en) * | 1997-06-05 | 2000-06-14 | Medtronic Ave, Inc. | Intravascular occlusion device |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2608418B1 (en) | 1992-07-31 |
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