WO1998055045A1 - Device for sealing hollow vessels - Google Patents

Device for sealing hollow vessels Download PDF

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Publication number
WO1998055045A1
WO1998055045A1 PCT/EP1998/003353 EP9803353W WO9855045A1 WO 1998055045 A1 WO1998055045 A1 WO 1998055045A1 EP 9803353 W EP9803353 W EP 9803353W WO 9855045 A1 WO9855045 A1 WO 9855045A1
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WO
WIPO (PCT)
Prior art keywords
sealing means
sealing
probe
hollow vessel
fluid
Prior art date
Application number
PCT/EP1998/003353
Other languages
German (de)
French (fr)
Inventor
Falah Redha
Original Assignee
Sherine Med Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sherine Med Ag filed Critical Sherine Med Ag
Priority to AU86247/98A priority Critical patent/AU8624798A/en
Publication of WO1998055045A1 publication Critical patent/WO1998055045A1/en

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Classifications

    • 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
    • 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
    • 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
    • A61B17/12131—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/10—Means for stopping flow from or in pipes or hoses
    • F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
    • F16L55/128—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
    • 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

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • the sealing agent is there in the form of a hose which can be introduced into the gas transport line and whose end is designed as a bellows.
  • the actuating means for unfolding the bellows is in the form of a longitudinally displaceable core in the hose, which is connected to an expansion tool for the bellows.
  • the spreading tool can be a linkage, a brush or a ring arrangement, is therefore of a complex construction and requires considerable effort. A use of this Medical devices are neither intended nor readily suitable because they could damage the hollow vessels.
  • the invention has for its object to provide a device of the type mentioned in the preamble of claim 1, which with simple and gentle means for short or long, complete or partial, reversible blocking or sealing of a hollow vessel, e.g. a blood vessel, an aneurysm, a body cavity, a sewer pipe, a hydraulic pipe, etc., is suitable, in a place that can only be achieved indirectly and through natural or artificial, pre-existing or through newly created hollow paths.
  • a hollow vessel e.g. a blood vessel, an aneurysm, a body cavity, a sewer pipe, a hydraulic pipe, etc.
  • the transport body makes it possible to transport the sealing agent to the desired location, which protects the hollow vessel, and on the other hand, due to the special nature of the sealing agent, the effort required to increase the volume is significantly reduced because spreading tools are not required.
  • the device in the "open" state completely or partially prevents the flow or remaining or penetration or further transport of liquid, gas, solids or mixtures of liquid and / or gas and / or solids in the hollow vessel.
  • the shape of the agent is changed such that it takes up a larger volume or covers a larger area and that it completely or partially fills the surrounding hollow vessel or forms a barrier at this location. It is sufficient if the sealant is moved out of the transport body. Thereafter, this remedy can be restored to its original state, thus canceling its effect.
  • the means can be decoupled from the rest of the device in the "partially open” or “open” state and coupled to it again.
  • the means which can be changed in volume or area consist of one or more materials which, due to their nature and / or arrangement and / or type of processing, have the property and / or the endeavor to provide the volume and / or area of the means with or without energy supply (mechanical Force) (e.g. super-elastic alloy, memory-shape alloy, spring braid, plastic, etc.).
  • the agent regularly takes the form of, for example, a rotating ellipsoid (rugby ball, lemon), a carrot or a tapered tube.
  • At least one end of the device remains in the least space or area in all functional states. From this end, the unfolded means can be moved back from a hose / tube by pushing them into the compressed form.
  • variable means of the invention can, for example, be attached to the tip of a long, thin probe and, in the "closed” state, can be covered with a hose / tube concentrically surrounding the probe so that the means take up as little space as possible.
  • the means can be sealed and / or perforated and / or slotted and / or braided and / or coated and / or consist of rays and / or spirals and / or rings which can optionally be connected to one another.
  • the device can also be designed in such a way that it collects solid material inside the tubular, "open" variable means and retains it in the "closed” state.
  • FIG. 1 a, 1 b, 1 c a device with a bead-like means in
  • Fig. 2a, 2b, 2c a device, which is shown in Fig. 1 d a ri n distinguishes that the agent is basket-like;
  • Figure 3 shows a variant of a basket-like means in longitudinal section.
  • FIG. 5a, 5b, 5c an apparatus with a basket-like means and with a probe
  • Fig. 6 shows a variant of a basket-like means of the probe in
  • 9a, 9b, 9c probes with working channel and basket-like means and
  • Fig. 10 shows the basket-like means in the extended state
  • the figures each show a device 10 for sealing a hollow body 12 through which a fluid (liquid or gas) can flow, with a tubular transport body 14 that can be inserted into the hollow vessel 12, in which sealing means 16 for blocking or obstructing the liquid flow and actuating means 18 for these means 16 are accommodated.
  • the means 16 are adjustable between an operating position in which they hinder the flow of the liquid in the hollow vessel 12 and a rest position in which they are accommodated in the transport body 14.
  • the transport body 14 is elastically deformable and adjustable in the direction of the longitudinal axis of the tube-like hollow vessel 12 in particular.
  • the transport body 14 can consist of plastic or metal.
  • the actuating means 18 is designed in the form of a pulling and / or pushing rope, one end of which is operatively connected to the means 16, while the other end can be actuated by the user.
  • the means 16 can consist of a material which strives to increase its volume and / or its area. In their operating state, the means 16 are in the form of a rotationally symmetrical body which can be bead-like or basket-like. It is also important that funds 16 For example, can consist of a shape memory alloy and / or a spring braid and / or plastic and are designed so that they can be transferred from the rest position to their operating position and returned without additional or expensive means.
  • the means can be perforated and / or slotted and / or braided and / or coated and / or consist of rays and / or spirals and / or rings.
  • the device is part of a medical probe 20 with guide wire 22, which is partly used as a transport body. If the means 16 is moved out of the probe 20 (FIG. 4b), it relaxes and is in pressure connection with the hollow vessel 12, so that it blocks the flow of the liquid flowing in the hollow body 12 or impedes it.
  • the means 16 is in the form of a basket, which is also rotationally symmetrical, so that it can also press against the inner wall of the hollow vessel 12.
  • 7 and 8 show cross sections through the device with or without probes.
  • FIGS. 1-6 and 8 show variants of probes without a working channel
  • FIGS. 7, 9 and 10 show probes with a working channel 24. 9, 10 represent a possibility of combining the invention with an existing other instrument.

Abstract

The invention relates to a device for sealing a through-flow-vessel (12), in which sealing agents (16) for preventing fluid flow and agents (18) for actuating the sealing agents can be inserted. These actuating agents (18) adjust the sealing agents between an operating position, in which they prevent fluid flow in the vessel (12), and an inoperative position permitting fluid flow. The sealing agents are designed so that their volume can be increased. The fluid is supplied with or without solid impurities. The sealing agents (16) are accommodated in a tubular transport element (14) which can be inserted into the vessel (12), and from which they can be released by the actuating agents (18). The sealing agents (16) are designed so as to automatically increase in volume on release from the transport element (14).

Description

Vorrichtung zum Abdichten von HohlgefäßenDevice for sealing hollow vessels
Die Erfindung betrifft eine Vorrichtung gemäß dem Oberbegriff des Anspruchs 1 .The invention relates to a device according to the preamble of claim 1.
Insbesondere in der Medizin ist es üblich, bei der Beseitigung von Ablagerungen in Arterien oder Venen medizinische Geräte einzusetzen, mit denen diese Ablagerungen entfernt, z.B. abgehobelt, werden. Während dieses Vorgangs kann ein Teil der Ablagerungen (Späne) von durchströmendem Blut mitgerissen werden und in andere Blutbahnen transportiert werden, was unerwünscht ist.In medicine in particular, it is common to use medical devices for removing deposits in arteries or veins with which these deposits are removed, e.g. be planed off. During this process, part of the deposits (chips) can be carried away by blood flowing through and transported into other blood streams, which is undesirable.
Durch die DE-C2-37 33 142 ist eine Vorrichtung bekannt, die zum Absperren von industriellen Gastransportleitungen dient. Das Abdichtmittel liegt dort in Form eines Schlauchs vor, der in die Gastransportleitung einbringbar ist und dessen Ende als Faltenbalg ausgebildet ist. Das Betätigungs-mittel zur Entfaltung des Faltenbalgs liegt als im Schlauch längsverschiebbare Seele vor, die mit einem Spreizwerkzeug für den Faltenbalg verbunden ist. Das Spreizwerkzeug kann ein Gestänge, eine Bürste oder eine Ringanordnung sein, ist damit kompliziert aufgebaut und bildet einen erheblichen Aufwand. Eine Verwendung dieser Vorrichtung in der Medizin ist weder vorgesehen noch ohne weiteres geeignet, weil sie die Hohlgefäße beschädigen könnte.From DE-C2-37 33 142 a device is known which serves to shut off industrial gas transmission lines. The sealing agent is there in the form of a hose which can be introduced into the gas transport line and whose end is designed as a bellows. The actuating means for unfolding the bellows is in the form of a longitudinally displaceable core in the hose, which is connected to an expansion tool for the bellows. The spreading tool can be a linkage, a brush or a ring arrangement, is therefore of a complex construction and requires considerable effort. A use of this Medical devices are neither intended nor readily suitable because they could damage the hollow vessels.
Ausgehend vom obigen Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine Vorrichtung der im Oberbegriff des Anspruchs 1 genannten Art zu schaffen, die mit einfachen und schonenden Mitteln für kurz- oder langdauerndes, vollständiges oder teilweises, reversibles Blockieren oder Abdichten eines Hohlgefäßes, z.B. eines Blutgefäßes, eines Aneurismas, einer Körperhöhle, einer Kanalisationsröhre, eines Hydraulikrohrs usw., geeignet ist, und zwar an einer Stelle, die nur indirekt und durch natürliche oder künstliche, vorbestehende oder durch neugeschaffene Hohlwege erreicht werden kann.Starting from the above prior art, the invention has for its object to provide a device of the type mentioned in the preamble of claim 1, which with simple and gentle means for short or long, complete or partial, reversible blocking or sealing of a hollow vessel, e.g. a blood vessel, an aneurysm, a body cavity, a sewer pipe, a hydraulic pipe, etc., is suitable, in a place that can only be achieved indirectly and through natural or artificial, pre-existing or through newly created hollow paths.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst.This object is achieved by the features of claim 1.
Einerseits wird damit durch den Transportkörper ein das Hohlgefäß schützender Transort des Abdichtmittels zur gewünschten Stelle möglich, und andererseits ist durch die besondere Beschaffenheit der Abdichtmittel der zur Volumenvergrößerung erforderliche Aufwand wesentlich vermindert, weil Spreizwerkzeuge nicht erforderlich sind.On the one hand, the transport body makes it possible to transport the sealing agent to the desired location, which protects the hollow vessel, and on the other hand, due to the special nature of the sealing agent, the effort required to increase the volume is significantly reduced because spreading tools are not required.
Die Vorrichtung im "geöffneten" Zustand (Mittel in Betriebsstellung) verhindert im Hohlgefäß vollständig oder teilweise das Strömen oder Verbleiben oder Eindringen oder Weiterbefördern von Flüssigkeit, Gas, Feststoffen oder Mischungen von Flüssigkeit und/oder Gas und/oder Feststoffen. Weitere zweckmäßige und vorteilhafte Ausgestaltungen der Erfindung gehen aus den Unteransprüchen hervor.The device in the "open" state (middle in operating position) completely or partially prevents the flow or remaining or penetration or further transport of liquid, gas, solids or mixtures of liquid and / or gas and / or solids in the hollow vessel. Further expedient and advantageous refinements of the invention emerge from the subclaims.
Wirkungsweise der Erfindung:Mode of operation of the invention:
An der gewünschten Stelle des Hohlgefäßes wird das Mittel in seiner Form so verändert, daß es ein größeres Volumen einnimmt oder eine größere Fläche abdeckt und daß es das umgebende Hohlgefäß damit ganz oder teilweise ausfüllt oder an dieser Stelle eine Barriere bildet. Dazu reicht es, wenn das Abdichtmittel aus dem Transportkörper herausgefahren wird. Danach kann dieses Mittel wieder in seinen ursprünglichen Zustand zurückversetzt werden, womit seine Wirkung aufgehoben wird. In einer Ausführungsform der Erfindung kann das Mittel im "teilweise geöffneten" oder "geöffneten" Zustand vom restlichen Teil der Vorrichtung abgekoppelt und an diese wieder angekoppelt werden. Die in Volumen oder Fläche veränderbaren Mittel bestehen aus einem oder mehreren Werkstoffen, die durch ihre Beschaffenheit und/oder Anordnung und/oder Verarbeitungsart die Eigenschaft und/oder das Bestreben haben, das Volumen und/oder die Fläche des Mittels mit oder ohne Energiezufuhr (mechanische Kraft) zu vergrößern (z.B. superelastische Legierung, Memory-Shape-Legierung, Federgeflecht, Kunststoff usw.) . Das Mittel hat im Betriebszustand regelmäßig die Form z.B. eines Rotations- ellipsoides (Rugby-Ball, Zitrone), einer Karotte oder eines spitz zulaufenden Schlauchs. Mindestens ein Ende der Vorrichtung bleibt in allen Funktionszuständen in der am wenigsten Raum oder Fläche beanspruchten Form. Von diesem Ende her können die entfalteten Mittel wieder von einem Schlauch/Rohr durch Überschieben in die komprimierte Form zurückgefahren werden. Die veränderlichen Mittel der Erfindung können beispielsweise an der Spitze einer langen, dünnen Sonde befestigt und im "geschlossenen" Zustand mit einem die Sonde konzentrisch umschließenden Schlauch/Rohr so bedeckt sein, daß die Mittel möglichst wenig Raum/Fläche beanspruchen. Durch Abziehen des Schlauches/Rohres von der Spitze weg dehnen sich die Mittel aus und streben den Kontakt mit dem umgebenden Hohlgefäß an. Durch Vorschieben des Schlauches/Rohres (Transportkörper) schiebt sich dieses über die Komponente und drängt diese wieder in ihre komprimierte Form. Die Mittel können dicht und/oder gelocht und/oder geschlitzt und/oder geflochten und/oder beschichtet sein und/oder aus Strahlen und/oder Spiralen und/oder Ringen bestehen, die optional miteinander verbunden sein können. Dabei kann die Vorrichtung auch so ausgebildet sein, daß es festes Material im Inneren der schlauchförmigen, "geöffneten" veränderlichen Mittel auffängt und im "geschlossenen" Zustand zurückbehält.At the desired location of the hollow vessel, the shape of the agent is changed such that it takes up a larger volume or covers a larger area and that it completely or partially fills the surrounding hollow vessel or forms a barrier at this location. It is sufficient if the sealant is moved out of the transport body. Thereafter, this remedy can be restored to its original state, thus canceling its effect. In one embodiment of the invention, the means can be decoupled from the rest of the device in the "partially open" or "open" state and coupled to it again. The means which can be changed in volume or area consist of one or more materials which, due to their nature and / or arrangement and / or type of processing, have the property and / or the endeavor to provide the volume and / or area of the means with or without energy supply (mechanical Force) (e.g. super-elastic alloy, memory-shape alloy, spring braid, plastic, etc.). In the operating state, the agent regularly takes the form of, for example, a rotating ellipsoid (rugby ball, lemon), a carrot or a tapered tube. At least one end of the device remains in the least space or area in all functional states. From this end, the unfolded means can be moved back from a hose / tube by pushing them into the compressed form. The variable means of the invention can, for example, be attached to the tip of a long, thin probe and, in the "closed" state, can be covered with a hose / tube concentrically surrounding the probe so that the means take up as little space as possible. By pulling the hose / tube off the Point away the means expand and strive for contact with the surrounding hollow vessel. By pushing the hose / tube (transport body) it pushes over the component and pushes it back into its compressed form. The means can be sealed and / or perforated and / or slotted and / or braided and / or coated and / or consist of rays and / or spirals and / or rings which can optionally be connected to one another. The device can also be designed in such a way that it collects solid material inside the tubular, "open" variable means and retains it in the "closed" state.
Einige Ausführungsbeispiele der Erfindung sind in der Zeichnung schematisch dargestellt und werden im folgenden näher erläutert. Es zeigenSome embodiments of the invention are shown schematically in the drawing and are explained in more detail below. Show it
Fig. 1 a, 1 b, 1 c eine Vorrichtung mit einem wulstartigen Mittel inFig. 1 a, 1 b, 1 c a device with a bead-like means in
Seitenansicht und in geschlossener bzw. geöffneter Stellung;Side view and in the closed or open position;
Fig. 2a, 2b, 2c e i ne Vo rrichtu n g , d ie s ic h vo n Fi g . 1 d a ri n unterscheidet, daß das Mittel korbartig ist;Fig. 2a, 2b, 2c a device, which is shown in Fig. 1 d a ri n distinguishes that the agent is basket-like;
Fig. 3 eine Variante eines korbartigen Mittels im Längsschnitt;Figure 3 shows a variant of a basket-like means in longitudinal section.
Fig. 4a, 4b, 4c eine Vorrichtung mit einem wulstartigen Mittel und mit einer Sonde;4a, 4b, 4c a device with a bead-like means and with a probe;
Fig. 5a, 5b, 5c eine Vorrichtung mit einem korbartigen Mittel und mit einer Sonde; Fig. 6 eine Variante eines korbartigen Mittels der Sonde im5a, 5b, 5c an apparatus with a basket-like means and with a probe; Fig. 6 shows a variant of a basket-like means of the probe in
Längsschnitt;Longitudinal section;
Fig. 7a, 7b, und7a, 7b, and
Fig. 8a, 8b, Querschnitte der Vorrichtung mit korbartigen bzw. wulstartigen Mitteln;8a, 8b, cross sections of the device with basket-like or bead-like means;
Fig. 9a, 9b, 9c Sonden mit Arbeitskanal und korbartigen Mitteln und9a, 9b, 9c probes with working channel and basket-like means and
Fig. 10 das korbartige Mittel im ausgefahrenen Zustand imFig. 10 shows the basket-like means in the extended state
Längsschnitt.Longitudinal section.
In den Figuren ist jeweils eine Vorrichtung 10 zum Abdichten eines von einen Fluid (Flüssigkeit oder Gas) durchströmbaren Hohlkörpers 12 mit einem rohrartigen und in das Hohlgefäß 12 einbringbaren Transportkörper 14 dargestellt, in dem Dichtmittel 16 zur Sperrung bzw. Behinderung des Flüssigkeitsdurchflusses sowie Betätigungsmittel 18 für diese Mittel 16 untergebracht sind. Dadurch sind die Mittel 16 zwischen einer Betriebsstellung, in der sie den Durchfluß der Flüssigkeit im Hohlgefäß 12 behindern, und einer Ruhestellung, in der sie im Transportkörper 14 untergebracht sind, verstellbar. Der Transportkörper 14 ist elastisch verformbar und in Richtung der Längsachse des insbesondere rohrartigen Hohlgefäßes 12 anpaßbar. Dabei kann der Transportkörper 14 aus Kunststoff oder Metall bestehen. Man erkennt, daß das Betätigungsmittel 18 in Form eines Zug- und/oder Druckseiles ausgebildet ist, dessen eines Ende mit den Mitteln 1 6 in Wirkverbindung steht, während das andere Ende vom Benutzer betägigbar ist. Die Mittel 16 können aus einem Werkstoff bestehen, der bestrebt ist, sein Volumen und/oder seine Fläche zu vergrößern. Dabei besitzen die Mittel 16 in ihrem Betriebszustand die Form eines rotationssymmetrischen Körpers, der wulstartig oder korbartig ausgebildet sein kann. Ferner ist von Bedeutung, daß die Mittel 16 z.B. aus einer Formgedächtnis-Legierung und/oder einem Federgeflecht und/oder Kunststoff bestehen können und so beschaffen sind, daß sie ohne zusätzliche bzw. aufwendige Mittel von der Ruhestellung in ihre Betriebsstellung und zurücküberführbar sind. Im Rahmen dieses Erfindungsgedankens können die Mittel gelocht und/oder geschlitzt und/oder geflochten und/oder beschichtet sein und/oder aus Strahlen und/oder Spiralen und/oder Ringen bestehen.The figures each show a device 10 for sealing a hollow body 12 through which a fluid (liquid or gas) can flow, with a tubular transport body 14 that can be inserted into the hollow vessel 12, in which sealing means 16 for blocking or obstructing the liquid flow and actuating means 18 for these means 16 are accommodated. As a result, the means 16 are adjustable between an operating position in which they hinder the flow of the liquid in the hollow vessel 12 and a rest position in which they are accommodated in the transport body 14. The transport body 14 is elastically deformable and adjustable in the direction of the longitudinal axis of the tube-like hollow vessel 12 in particular. The transport body 14 can consist of plastic or metal. It can be seen that the actuating means 18 is designed in the form of a pulling and / or pushing rope, one end of which is operatively connected to the means 16, while the other end can be actuated by the user. The means 16 can consist of a material which strives to increase its volume and / or its area. In their operating state, the means 16 are in the form of a rotationally symmetrical body which can be bead-like or basket-like. It is also important that funds 16 For example, can consist of a shape memory alloy and / or a spring braid and / or plastic and are designed so that they can be transferred from the rest position to their operating position and returned without additional or expensive means. Within the scope of this inventive concept, the means can be perforated and / or slotted and / or braided and / or coated and / or consist of rays and / or spirals and / or rings.
In den Figuren 4 und 5 ist die Vorrichtung Teil einer medizinischen Sonde 20 mit Führungsdraht 22, die teilweise als Transportkörper genutzt wird. Wird das Mittel 16 aus der Sonde 20 herausgefahren (Fig. 4b), dann entspannt es sich und steht mit dem Hohlgefäß 12 in Druckverbindung, so daß es den Durchfluß der im Hohlkörper 12 strömenden Flüssigkeit sperrt bzw. diese behindert. In Fig. 5 ist das Mittel 16 in Form eines Korbes ausgebildet, der ebenfalls rotationssymmetrisch ausgebildet ist, so daß er sich genauso an die Innenwand des Hohlgefäßes 12 andrücken kann. Die Fig. 7 und 8 zeigen Querschnitte durch die Vorrichtung mit oder ohne Sonden. Andererseits zeigen die Figuren 1 - 6 und 8 Varianten von Sonden ohne Arbeitskanal, während die Figuren 7, 9 und 10 Sonden mit Arbeitskanal 24 darstellen. Die Fig. 9, 10 stellen eine Möglichkeit dar, die Erfindung mit einem bestehenden anderem Instrument zu kombinieren. In FIGS. 4 and 5, the device is part of a medical probe 20 with guide wire 22, which is partly used as a transport body. If the means 16 is moved out of the probe 20 (FIG. 4b), it relaxes and is in pressure connection with the hollow vessel 12, so that it blocks the flow of the liquid flowing in the hollow body 12 or impedes it. In Fig. 5, the means 16 is in the form of a basket, which is also rotationally symmetrical, so that it can also press against the inner wall of the hollow vessel 12. 7 and 8 show cross sections through the device with or without probes. On the other hand, FIGS. 1-6 and 8 show variants of probes without a working channel, while FIGS. 7, 9 and 10 show probes with a working channel 24. 9, 10 represent a possibility of combining the invention with an existing other instrument.

Claims

A n s p r ü c h e Expectations
1 . Vorrichtung zum Abdichten eines von einem Fluid durchströmbaren Hohlgefäßes ( 1 2), in das Abdichtmittel ( 1 6) zur Behinderung des Fluiddurchflusses und Betätigungsmittel (18) für diese Abdichtmittel einbringbar sind, die durch diese Betätigungsmittel zwischen einer Betriebsstellung, in der sie den Fluiddurchfluß im Hohlgefäß (12) behindern, und einer den Fluiddurchfluß gestattenden Ruhestellung verstellbar sind, wobei die Dichtmittel so beschaffen sind, daß ihr Volumen vergrößert werden kann , und wobei das Fluid mit einer oder ohne eine Festkörperbeimengung zugeführt wird, dadurch gekennzeichnet, daß die Abdichtmittel (16) in einem rohrartigen und in das Hohlgefäß (12) einbringbaren Transportkörper (14) untergebracht sind, aus dem die Abdichtmittel (16) mittels der Betätigungsmittel (18) freisetzbar sind, und daß Abdichtmittel (16) derart beschaffen sind, daß sie bei Ihrer Freisetzung selbst ihre Volumenvergrößerung vornehmen.1 . Device for sealing a hollow vessel through which a fluid can flow, into which sealing means (1 6) for obstructing the flow of fluid, and actuating means (18) for these sealing means can be introduced, which are actuated by these actuating means between an operating position in which they control the fluid flow in Obstruct the hollow vessel (12), and a rest position allowing the fluid flow are adjustable, the sealing means being designed in such a way that their volume can be increased, and the fluid being supplied with or without a solid-state admixture, characterized in that the sealing means (16 ) are accommodated in a tubular transport body (14) which can be inserted into the hollow vessel (12), from which the sealing means (16) can be released by means of the actuating means (18), and that sealing means (16) are such that they are released carry out their volume increase themselves.
2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, daß die Betätigungsmittel (18) in Form eines Zug- und/oder Druckdrahts oder -rohres ausgebildet sind, dessen eines Ende mit den Abdichtmitteln (16) in Wirkverbindung steht, während das andere Ende vom Benutzer betätigbar ist. 2. Apparatus according to claim 1, characterized in that the actuating means (18) are designed in the form of a tension and / or compression wire or tube, one end of which is operatively connected to the sealing means (16), while the other end by the user can be actuated.
3. Vorrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Abdichtmittel (16) in ihrem Betriebszustand die Form eines mindestens annähernd rotationssymmetrischen Körpers aufweisen.3. Device according to one of claims 1 or 2, characterized in that the sealing means (16) in their operating state have the shape of an at least approximately rotationally symmetrical body.
4. . Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Abdichtmittel (16) aus einer Formgedächtnis-Legierung und/oder einem Federgeflecht und/oder Kunststoff bestehen.4.. Device according to one of claims 1 to 3, characterized in that the sealing means (16) consist of a shape memory alloy and / or a spring braid and / or plastic.
5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Abdichtmittel (16) gelocht und/oder geschlitzt und/oder geflochten und/oder beschichtet sind und/oder aus Strahlen und/oder Spiralen und/oder Ringen bestehen.5. Device according to one of claims 1 to 4, characterized in that the sealing means (16) are perforated and / or slotted and / or braided and / or coated and / or consist of rays and / or spirals and / or rings.
6. Vorrichtung nach einem der Ansprüche 1 bis 5 mit einem Gerät, insbesondere Sonde (20), dadurch gekennzeichnet, daß die Abdichtmittel (16) z.B. an der Spitze der Sonde (20) angeordnet sind und in ihrer Ruhestellung mit dem die Sonde (20) konzentrisch umschließenden Schlauch/Rohr umgeben sind.6. Device according to one of claims 1 to 5 with a device, in particular probe (20), characterized in that the sealing means (16) e.g. are arranged at the tip of the probe (20) and in their rest position are surrounded by the hose / tube concentrically surrounding the probe (20).
7. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Transportkörper (14) elastisch verformbar und in Richtung der Längsachse des insbesondere rohrartigen Hohlgefäßes (12) anpaßbar ist. 7. Device according to one of claims 1 to 6, characterized in that the transport body (14) is elastically deformable and adjustable in the direction of the longitudinal axis of the particularly tubular hollow vessel (12).
8. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Transportkörper (14) aus Kunststoff oder Metall besteht.8. Device according to one of claims 1 to 7, characterized in that the transport body (14) consists of plastic or metal.
9. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß an der Spitze der Sonde (20) ein flexibler Führungsdraht (22) angeordnet ist. 9. Device according to one of claims 1 to 8, characterized in that a flexible guide wire (22) is arranged at the tip of the probe (20).
PCT/EP1998/003353 1997-06-06 1998-06-04 Device for sealing hollow vessels WO1998055045A1 (en)

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DE19723700.2 1997-06-06

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