DE3417738C2 - Blood filter that can be used in veins - Google Patents
Blood filter that can be used in veinsInfo
- Publication number
- DE3417738C2 DE3417738C2 DE3417738A DE3417738A DE3417738C2 DE 3417738 C2 DE3417738 C2 DE 3417738C2 DE 3417738 A DE3417738 A DE 3417738A DE 3417738 A DE3417738 A DE 3417738A DE 3417738 C2 DE3417738 C2 DE 3417738C2
- Authority
- DE
- Germany
- Prior art keywords
- filter
- filter according
- struts
- blood
- vein
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
- A61F2/01—Filters implantable into blood vessels
- A61F2/0105—Open ended, i.e. legs gathered only at one side
-
- 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
- A61F2230/0069—Three-dimensional shapes cylindrical
-
- 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
- A61F2230/0086—Pyramidal, tetrahedral, or wedge-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
- A61F2230/0086—Pyramidal, tetrahedral, or wedge-shaped
- A61F2230/0089—Pyramidal, tetrahedral, or wedge-shaped tetrahedral, i.e. having a triangular basis
Abstract
In Adern einsetzbarer Blutfilter, der zur Behandlung emboliegefährdeter Personen verwendbar ist, der faltbar ist und bei dem im aufgefalteten Zustand ein Teil des Filters anströmseitig eine Anlagefläche (2) für die Aderwand bildet. Der Filter (1) kann eine Eigenspannung aufweisen, die den Filter aus dem zusammengelegten in den aufgefalteten Zustand selbsttätig überführt oder durch ein Faltgestänge (4) in seinem Inneren aufgefaltet werden. Der Blutfilter (1) läßt sich durch ein Katheter oder eine Injektionsnadel in eine Ader einsetzen und damit auch wieder entnehmen.Blood filter that can be used in veins, that can be used for the treatment of people at risk of embolism, that is foldable and in which, in the unfolded state, part of the filter forms a contact surface (2) for the vein wall on the inflow side. The filter (1) can have an internal stress which the filter automatically transfers from the collapsed to the unfolded state or which can be unfolded in its interior by a folding rod (4). The blood filter (1) can be inserted into a vein through a catheter or an injection needle and thus removed again.
Description
Die Erfindung betrifft einen in Adern einsetzbaren Blutfilter, der zur Behandlung emboliegefährdeter Personen verwendbar ist und mit einer filigranen Struktur von aufspreizbaren Streben ausgebildet ist, wobei im aufgespreizten Zustand in situ Teile der Streben anströmseitig an der Wandung der Ader fest anliegen.The invention relates to a blood filter which can be used in veins and is used for treating people at risk of embolism can be used and is designed with a filigree structure of expandable struts, with im expanded state in situ parts of the struts on the inflow side are firmly in contact with the wall of the vein.
Als vorsorgliche Maßnahme zur Verhütung einer Embolie ist neben chemotherapeutischen und anderen Maßnahmen auch bekannt, Blutfilter in Adern einzusetzen. Diese Blutfilter sollen verhindern, daß verschleppte Blutgerinsel in den Andern, die z. B. nach einer Operation auftreten können, im Blutgefäßsystem weiterwandern und an einer engen Stelle des Blutgefäßsystems den Blutstrom unterbrechen und dadurch eine EmbolieAs a precautionary measure to prevent an embolism is next to chemotherapeutic and other Measures also known to use blood filters in veins. These blood filters are designed to prevent being procrastinated Blood clots in the others B. can occur after an operation, migrate further in the blood vessel system and interrupt the blood flow at a narrow point in the blood vessel system, creating an embolism
auslösen.trigger.
Bekannte Blutfilter sind einfache Sperrfilter, die ein Blutgerinsel am Weiterströmen hindern, mit denen aber das Blutgerinsel nicht entnommen werden kann. Diese Blutfilter sind auch nur unter vergleichsweise großem Aufwand in die Adern einzusetzen.Well-known blood filters are simple blocking filters that prevent blood clots from flowing on, but with them the clot cannot be removed. These blood filters are also only under comparatively large Put effort into the veins.
In der chirurgischen Zeitschrift Surgery, Vol. 73. April 1973, No. 4, Seite 599 bis 606 ist ein gattungsgemäßer Blutfilter dargestellt, der aus einem Büschel von mehrfach in sich gekröpften Stahldrähten besteht, deren Enden auf einer Seite zu einer gemeinsamen Spitze verbunden sind, während die anderen Enden ähnlich dem Gerippe eines halbgeöffneten Regenschirms nach außen gespreizt sind und kleine Widerhaken tragen. Nach Einführen in ein Blutgefäß wird der Filter vom Einsetzinstrument heruntergeschoben, worauf sich die Stahldrähte durch ihre Eigenelastizität auseinanderspreizen und mit den Widerhaken an der Gefäßwand festkrallen. In der medizinischen Zeitschrift Radiology, Vol. 150, Jan. ί 984, No. 1, Seite 255 bis 257 ist auf Seite 257 derselbe Greenfield-Filter im Vergleich mit zwei anderen, nämlich dem älteren Mobin-Uddin-Filter, das noch stärker an das Gerippe eines Regenschirms erinnert, und einem als »Vogelnest« bezeichneten Filter, das wie ein unregelmäßiges lockeres Knäuel Drahtwolle aussieht, beschrieben.In the surgical journal Surgery, Vol. 73 April 1973, no. 4, pages 599 to 606 is a generic one Blood filter shown, which consists of a tuft of multiple cranked steel wires, the ends of which on one side connected to a common point, while the other ends similar to that The skeleton of a half-open umbrella is spread outwards and has small barbs. To When inserted into a blood vessel, the filter is pushed down by the insertion tool, whereupon the steel wires are attached Spread apart due to their inherent elasticity and cling to the vessel wall with the barbs. In the medical journal Radiology, Vol. 150, Jan. 984, no. 1, pages 255-257 is the same on page 257 Greenfield filter compared with two others, namely the older Mobin-Uddin filter, which is even stronger reminiscent of the skeleton of an umbrella, and a filter called a "bird's nest" that looks like a looks like irregular, loose skein of wire wool.
Schließlich zeigt die Veröffentlichung American Journal of Roentgenology, VoI. 141, September 1983, Seite
601 bis 604 noch einen als konische Schraubenfeder gewickelten Blutfilter, dessen Form einer Sprungfeder
für Polstermöbel ähnelt und sich unter Körpertemperatur auf seine Endgröße ausdehnt und sich dabei in der
Ader festsetzt.
Die bekannten Filter sind offenbar »zum Verbleib« gedacht; jedenfalls sagen die Veröffentlichungen nichts
über die Möglichkeit einer Entfernung aus dem lebenden Körper aus.Finally, the publication American Journal of Roentgenology, VoI. 141, September 1983, pages 601 to 604 a blood filter wound as a conical helical spring, the shape of which resembles a spring for upholstered furniture and expands to its final size under body temperature and thereby becomes lodged in the vein.
The known filters are evidently intended "to remain"; in any case, the publications say nothing about the possibility of removal from the living body.
Der Erfindung liegt die Aufgabe zugrunde, einen Eilutfilter anzugeben, der auf einfache Weise beispielsweise mit einem Katheter in Adern einsetzbar und zusammen mit einem Blutgerinsel wieder entnehmbar sein soll.The invention is based on the object of specifying an Eilut filter which, for example, in a simple manner can be used with a catheter in veins and can be removed again together with a blood clot target.
Diese Aufgabe wird erfindungsgemäß bei einem Blutfilter der eingangs bezeichneten Art mit der Erfindung dadurch gelöst, daß der Filter im Inneren Mittel zum Auf- und Zuspreizen der Streben aufweist.According to the invention, this object is achieved with the invention in a blood filter of the type specified at the outset solved in that the filter has inside means for spreading the struts open and closed.
Mit großem Vorteil kann der Blutfilter nach der Erfindung dadurch, daß er Mittel zum Auf- und Zuspreizen der Streben aufweist, in optimaler Erfüllung seiner Aufgäbe auf einfache Weise in eine Ader eingesetzt, sodann aufgespreizt und am Ort seines Einsatzes sicher gehalten und nach Einfangen eines Blutgerinsels nach Zuspreizen der Streben wieder aus der Ader entnommen werden. Der Filter läßt sich aufgrund seiner erfindungsgemäßen Ausgestaltung, die ein gezieltes Auf- und Zuspreizen der Streben ermöglicht, vergleichsweise problemlos mit Hilfe eines Katheters oder einer Injektionsnadel in eine Ader einsetzen und aus dieser wieder entfernen. The blood filter according to the invention can be of great advantage in that it has means for spreading it open and closed the strut has, then inserted in a simple manner into a vein in optimal fulfillment of its tasks, then spread open and held securely at the place of its use and after catching a blood clot after spreading it the struts can be removed from the vein again. The filter can be due to its inventive Design that enables the struts to be spread open and closed in a relatively problem-free manner insert it into and remove it from a vein using a catheter or hypodermic needle.
Mit Vorteil sieht eine Ausgestaltung des Filters vor, daß die Mittel zum Auf- und Zuspreizen mit einer Zugoder Schubstrebe ausgebildet sind, die zumindest mit einem Ende bis außerhalb der Filterstruktur reichend durch einen Katheter erfaßbar und betätigbar istAn embodiment of the filter advantageously provides that the means for expanding and contracting with a pull or Thrust strut are formed, which at least one end reaches outside of the filter structure can be detected and actuated by a catheter
Damit der Filter seine spreizbare Eigenschaft enthält, kann dieser eine Eigenspannung aufweisen, welche den Filter aus dem zusammengelegten in den aufgefalteten Zustand selbsttätig überführt. Die Eigenspannung kannSo that the filter contains its expandable property, it can have an internal stress that causes the Filters automatically transferred from the collapsed to the unfolded state. The internal stress can
dabei aufgrund von Materialeigenschaften des Filters im Zusammenwirken mit den Mitteln zum Auf- und Zusprei/.cn hervorgerufen werden.due to the material properties of the filter in cooperation with the means for opening and closing be evoked.
Zur Erreichung eines genügend festen Sitzes des Filters in der Ader, der teilweise schon durch die Spreizw;rkung erreicht wird, kann zusätzlich noch die Anlagefläche eine die Haftung an der Aderwand erhöhende Struktur aufweisen.To achieve a sufficiently tight fit of the filter in the vein, which is partly already due to the spreading force is achieved, the contact surface can also increase the adhesion to the vein wall Have structure.
Beispielsweise wird ein Festsitz des Filters über den Innenumfang der Ader dadurch erreicht, daß dieser mit einer ringförmigen Anlagefläche ausgebildet ist, welche aus einzelnen, ausspreizbaren Kreisringsegmenten besteht. Auch kann die Anlagefläche eine die Haftung an der Wand der Ader erhöhende, aus kleinen Widerhaken bestehende Struktur aufweisen.For example, a tight fit of the filter over the inner circumference of the wire is achieved in that it is with an annular contact surface is formed, which consists of individual, expandable circular ring segments. The contact surface can also be made up of small barbs, which increases the adhesion to the wall of the wire have existing structure.
Die Erfindung wird in schematischen Zeichnungen in einer bevorzugten Ausführungsform gezeigt, wobei aus den Zeichnungen weitere vorteilhafte Einzelheiten des Blutfilters entnehmbar sind. Es zeigtThe invention is shown in schematic drawings in a preferred embodiment, wherein from Further advantageous details of the blood filter can be taken from the drawings. It shows
F i g. 1 einen Schnitt durch einen konischen Blutfilter, der im Innern Mittel zum Auf- und Zuspreizen aufweist,F i g. 1 shows a section through a conical blood filter, which has inside means for expanding and closing,
F i g. 2 ein Injektionssystem mit angesetztem Blutfilter, F i g. 2 an injection system with an attached blood filter,
F i g. 3 eine Ausführungsform des Blutfilters in der Seitenansicht und im Schnitt quer zu seiner Längsachse.F i g. 3 shows an embodiment of the blood filter in a side view and in section transversely to its longitudinal axis.
Die Zusammenschau der F i g. 1 bis 3 zeigt erfindungsgemäße Blutfilter, welche emboliegefährdeten Personen in die Ader eingesetzt werden können, in vergrößerter Darstellung. De Blutfilter 1 zeigen konisch ausgebildete Filterbereiche und lassen sich nach Art eines feingliedrigen Spreizgestänges zusammenlegen bzw. aufspreizen. Die Konusöffnung des Filters 1 ist auf der Anströmseite angeordnet. Ein Blutstrom, welcher ein Blutgerinsel mit sich führt, tritt durch die Konusöffnung in den Filter 1 ein. Aufgrund der Maschenweite oder Porengröße des Filters wird das Blutgerinsel im Filter zurückgehalten und das Blut kann ohne nennenswerten Widerstand den Filter passieren. In F i g. 1 ist die Strömungsrichtung des Blutes durch Pfeile angedeutet. Der Filter ist aus gewebeverträglichem Kunststoff oder anderen verträglichen Materialien hergestellt. Derartige Materialien sind dem Fachmann bekannt und werden daher nicht im einzelnen genannt oder beschrieben.The synopsis of the F i g. 1 to 3 show blood filters according to the invention which are at risk of embolism People in the vein can be inserted, in an enlarged view. De blood filters 1 are conical trained filter areas and can be put together like a delicate spreader rod or spread open. The cone opening of the filter 1 is arranged on the upstream side. A stream of blood, which carries a blood clot with it enters the filter 1 through the cone opening. Because of the mesh size or pore size of the filter, the blood clot is retained in the filter and the blood can flow without significant Resistance to pass the filter. In Fig. 1 the direction of flow of the blood is indicated by arrows. The filter is made of tissue-compatible plastic or other compatible materials. Such Materials are known to the person skilled in the art and are therefore not named or described in detail.
Fig.! zeigt einen Blutfilter 1, welcher im Innern Mittel 4 zum Auf- und Zuspreizen der Streben 2,3 aufweist.Fig.! shows a blood filter 1, which means inside 4 has for expanding and spreading the struts 2,3.
Diese Mittel zum Auf- und Zuspreizen sind mit einer Zug- oder Schubstrebe 6 ausgebildet, die zumindest mit einem Ende 16 b;s außerhalb der Filterstruktur reichend durch einen Katheter erfaßbar oder betätigbar ist.These means for expanding and contracting are formed with a tension or push strut 6, which has at least one end 16 b ; s can be detected or actuated by a catheter reaching outside the filter structure.
Weiterhin weist die Schubstrebe 6 an diese angelenkte Spreizstreben 5 auf, die mit ihren freien Enden bei Betätigung der Zug- oder Schubstrebe 6 über die Peripherie des Filters 1 nach außen ausspreizba·· bzw. einwärts einziehbar angeordnet sind. Aufgrund ihrer Materialeigenschaften und der Herstellung können beispielsweise die Spreizstreben eine federnde Eigenspannung aufweisen, welche bewirkt, daß der Filter nach Freigabe durch das Injektionssystem sich selbsttätig aufspreizt und mit seiner Anlagefläche 2 an die Innenseite der Aderwand anlegt. Diese Anlagefläche 2 kann mit Vorteil zylindrisch ausgebildet sein und bildet den Abschluß des Filters i auf der Anströmseite. Auf ihrer Außenfläche können die Anlageflächen 2 eine feine Struktur 3, beispielsweise mit einer gewissen Rauhigkeit aufweisen, welche den Halt des Filters t an der Innenwand der Ader verbessert. Auch kann diese Struktur 3 aus kleinen Widerhaken bestehen.Furthermore, the thrust strut 6 has articulated expansion struts 5 with their free ends at Actuation of the pull or push strut 6 over the periphery of the filter 1 expandable outward or inward are arranged retractable. Due to their material properties and the manufacturing process, for example the expansion struts have a resilient internal tension, which causes the filter to be released by the injection system automatically spreads and with its contact surface 2 on the inside of the Vein wall creates. This contact surface 2 can advantageously be cylindrical and forms the conclusion of the filter i on the upstream side. On their outer surface, the contact surfaces 2 can have a fine structure 3, for example with a certain roughness, which the hold of the filter t on the inner wall of the Vein improved. This structure 3 can also consist of small barbs.
Durch Zug an der zentralen Zug- oder Schubstrebe 6 des Spreizgestänges kann der Filter, beispielsweise bei Entnahme aus der Ader, schirmförmig zusammengelegt werden. Der Katheter oder die Injektionsnadel ergreift dabei das Zugende 16 der Strebe 6, welches bis außerhalb des eigentlichen Filterkörpers reichtBy pulling on the central tension or push strut 6 of the expanding rod, the filter, for example at Removal from the vein, put together in an umbrella shape. The catheter or injection needle grips while the pulling end 16 of the strut 6, which extends outside of the actual filter body
Es besteht auch die Möglichkeit, daß bei Entnahme des Blutfilters 1 der Katheter außen über den Filter 1
greift und den Filter 1 mit seinem Inhalt umschließt
Der Filter gemäß Fig. 1 kann sich beim Einsetzen entweder durch Eigenspreizung entfalten oder aber
auch durch Zug an der Zugstange 6 des Spreizgestänges in entgegengesetzter Richtung aufgespreizt werden.There is also the possibility that when the blood filter 1 is removed, the catheter reaches outside of the filter 1 and encloses the filter 1 with its contents
The filter according to FIG. 1 can either unfold by its own expansion when it is inserted or it can also be expanded in the opposite direction by pulling on the pull rod 6 of the expansion rod.
Zur Verbesserung des Haltes können diese Spreizstreben 5 an ihren ausgefahrenen Enden beispielsweise kleine Widerhaken aufweisen. Beim Zusammenlegen des Filters 1 werden diese Widerhaken zurückgezogen und der Filter 1 wird freigegeben.To improve the hold, these struts can expand 5 have, for example, small barbs at their extended ends. When folding of the filter 1, these barbs are withdrawn and the filter 1 is released.
Bei den Ausführungsbeispielen gemäß F i g. 1 und 2 ist die Anlagefläche des Filters 1 in axialer Richtung vergleichsweise lang ausgebildet Andererseits kann es für eine gute Anlage an der Wand der Ader ausreichend sein, wenn die Anlagefläche eine ringförmige Ausbildung aufweist. Hierbei kann die Anlagefläche beispielsweise als ringförmige Wulst gestaltet sein, welche aus einzelnen, aufspreizbaren Kreisringsegmenten besteht Diese Kreisringsegmente können über Scharniere miteinander verbunden sein.In the exemplary embodiments according to FIG. 1 and 2 is the contact surface of the filter 1 in the axial direction made comparatively long On the other hand, it may be sufficient for a good contact with the wall of the vein be when the contact surface has an annular design. Here, the contact surface can, for example be designed as an annular bead, which consists of individual, expandable annulus segments These circular ring segments can be connected to one another via hinges.
F i g. 2 zeigt einen für den Einsatz vorbereiteten Blutfilter 1 an der Spitze einer Injektionsnadel. Durch Schub des Kolbens wird der Filter 1 aus der Nadel mit dem Konusende voraus in die Ader eingesetzt.F i g. 2 shows a blood filter 1 prepared for use at the tip of an injection needle. With thrust of the piston, the filter 1 is inserted from the needle with the cone end first into the vein.
F i g. 3 zeigt den Blutfilter 1 in einer weiteren Ausführungsform, wobei dieser im aufgespreizten Zustand im wesentlichen eine polygonale Form annimmt. Dieser besitzt in seiner Filterfläche in Richtung der Filterlängsachse verlaufende Anlagestege 12, von denen im gezeigten Ausführungsbeispiel acht vorhanden sind, vorzugsweise radialsymmetrisch um die Filterlängsachse angeordnet, wie dies insbesondere aus der Schnittdarstellung der F i g. 3 ersichtlich ist.F i g. 3 shows the blood filter 1 in a further embodiment, this essentially assuming a polygonal shape in the expanded state. This has contact webs 12 running in its filter surface in the direction of the filter's longitudinal axis, of which those shown in FIG Embodiment eight are present, preferably arranged radially symmetrically around the filter longitudinal axis, As can be seen in particular from the sectional view in FIG. 3 can be seen.
Jeder Steg 12 ist mit mehreren Spreizarmen 15 eines Spreizgestänges 14 verbunden, welches durch Zug oder Druck an der zentralen Stange 16 zum Einsetzen oder zur Entnahme des Filters aus der Ader zusammengelegt werden kann. Auch bei diesem Filter kann zur Verbesserung der Anlage an der Aderwand, wie schon bei der Ausführung in F i g. 1 beschrieben, ein Teil der Spreizarme 15 mit endständigen Widerhäkchen ausgebildet sein.Each web 12 is connected to a plurality of expanding arms 15 of an expanding rod 14, which by train or Pressure on the central rod 16 to insert or remove the filter from the vein collapsed can be. This filter can also be used to improve the attachment to the vein wall, as was the case with the Execution in FIG. 1, a part of the spreading arms 15 may be formed with terminal barbs.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (8)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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DE3417738A DE3417738C2 (en) | 1984-05-12 | 1984-05-12 | Blood filter that can be used in veins |
DE19843429850 DE3429850A1 (en) | 1984-05-12 | 1984-08-14 | Improved blood filter for insertion into veins |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3417738A DE3417738C2 (en) | 1984-05-12 | 1984-05-12 | Blood filter that can be used in veins |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3417738A1 DE3417738A1 (en) | 1985-11-14 |
DE3417738C2 true DE3417738C2 (en) | 1986-10-02 |
Family
ID=6235719
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE3417738A Expired DE3417738C2 (en) | 1984-05-12 | 1984-05-12 | Blood filter that can be used in veins |
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DE (1) | DE3417738C2 (en) |
Cited By (42)
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DE9409484U1 (en) * | 1994-06-11 | 1994-08-04 | Naderlinger Eduard | Vena cava thrombus filter |
US6371971B1 (en) | 1999-11-15 | 2002-04-16 | Scimed Life Systems, Inc. | Guidewire filter and methods of use |
US6371969B1 (en) | 1997-05-08 | 2002-04-16 | Scimed Life Systems, Inc. | Distal protection device and method |
US6371970B1 (en) | 1999-07-30 | 2002-04-16 | Incept Llc | Vascular filter having articulation region and methods of use in the ascending aorta |
US6530939B1 (en) | 1999-07-30 | 2003-03-11 | Incept, Llc | Vascular device having articulation region and methods of use |
US6537295B2 (en) | 2001-03-06 | 2003-03-25 | Scimed Life Systems, Inc. | Wire and lock mechanism |
US6544279B1 (en) | 2000-08-09 | 2003-04-08 | Incept, Llc | Vascular device for emboli, thrombus and foreign body removal and methods of use |
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Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
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