DE4447101A1 - Bodies for tube-like passageways e.g. veins and arteries - Google Patents

Bodies for tube-like passageways e.g. veins and arteries

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Publication number
DE4447101A1
DE4447101A1 DE19944447101 DE4447101A DE4447101A1 DE 4447101 A1 DE4447101 A1 DE 4447101A1 DE 19944447101 DE19944447101 DE 19944447101 DE 4447101 A DE4447101 A DE 4447101A DE 4447101 A1 DE4447101 A1 DE 4447101A1
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Germany
Prior art keywords
body
characterized
state
body according
material
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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.)
Withdrawn
Application number
DE19944447101
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German (de)
Inventor
Andreas U Dr Med Freiburghaus
Falah Dr Redha
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FREIBURGHAUS ANDREAS U
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FREIBURGHAUS ANDREAS U
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Priority to DE9420877U priority Critical patent/DE9420877U1/en
Priority to DE19944447101 priority patent/DE4447101A1/en
Publication of DE4447101A1 publication Critical patent/DE4447101A1/en
Application status is Withdrawn legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/82Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/82Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/95Instruments specially adapted for placement or removal of stents or stent-grafts
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L29/00Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
    • A61L29/02Inorganic materials
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L29/00Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
    • A61L29/04Macromolecular materials
    • A61L29/041Macromolecular materials obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L29/00Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
    • A61L29/04Macromolecular materials
    • A61L29/06Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L31/00Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
    • A61L31/02Inorganic materials
    • A61L31/022Metals or alloys
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L31/00Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
    • A61L31/04Macromolecular materials
    • A61L31/048Macromolecular materials obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L31/00Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
    • A61L31/04Macromolecular materials
    • A61L31/06Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/04Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
    • A61F2/06Blood vessels
    • A61F2/07Stent-grafts
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/95Instruments specially adapted for placement or removal of stents or stent-grafts
    • A61F2/954Instruments specially adapted for placement or removal of stents or stent-grafts for placing stents or stent-grafts in a bifurcation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/04Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
    • A61F2/06Blood vessels
    • A61F2002/065Y-shaped blood vessels
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2210/00Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2210/0014Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using shape memory or superelastic materials, e.g. nitinol
    • A61F2210/0019Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using shape memory or superelastic materials, e.g. nitinol operated at only one temperature whilst inside or touching the human body, e.g. constrained in a non-operative shape during surgery, another temperature only occurring before the operation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2210/00Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2210/0014Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using shape memory or superelastic materials, e.g. nitinol
    • A61F2210/0023Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using shape memory or superelastic materials, e.g. nitinol operated at different temperatures whilst inside or touching the human body, heated or cooled by external energy source or cold supply
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2210/00Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2210/0014Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using shape memory or superelastic materials, e.g. nitinol
    • A61F2210/0023Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using shape memory or superelastic materials, e.g. nitinol operated at different temperatures whilst inside or touching the human body, heated or cooled by external energy source or cold supply
    • A61F2210/0042Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using shape memory or superelastic materials, e.g. nitinol operated at different temperatures whilst inside or touching the human body, heated or cooled by external energy source or cold supply using a fluid, e.g. circulating
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2210/00Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2210/0014Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using shape memory or superelastic materials, e.g. nitinol
    • A61F2210/0023Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using shape memory or superelastic materials, e.g. nitinol operated at different temperatures whilst inside or touching the human body, heated or cooled by external energy source or cold supply
    • A61F2210/0047Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using shape memory or superelastic materials, e.g. nitinol operated at different temperatures whilst inside or touching the human body, heated or cooled by external energy source or cold supply heated by light

Abstract

A body for opening, keeping open, for forming and/or covering hollow spaces e.g. arteries, veins, bronchi, bile ducts or ureters takes up its shapes after introducing into or forming the hollow space and then retains it by the action of physical, chemical or mechanical influences such as pressure, temperature, irradiation with acoustic or electromagentic waves or reaction with other substances.

Description

Die Erfindung betrifft einen Körper zum Öffnen, offen halten, zum Bilden und/oder Auskleiden von rohrartigen Durchgängen, z. The invention relates to a body for opening, hold open, for forming and / or lining of tubular passages, z. B. Arterien oder Venen, oder von anderen Hohlräumen. As arteries or veins, or other voids.

Solche Körper sind bekannt und z. Such bodies are known and z. B. in der US-PS 5.071.407 beschrieben. As described in US Patent No. 5,071,407. Dabei wird der maschenartige Körper mit aufwendigen Einrichtungen in vorgesehene Durchgänge, z. Here, the mesh-like body with elaborate facilities provided passages is such. B. Arterien, gebracht, wo er sich entfaltet und die gewünschte Form einnimmt. B. arteries brought, where it unfolds and assumes the desired shape. Dieser Körper ist zum einen im Aufbau aufwendig und zum anderen setzt er aufwendige Vorrichtungen zum einbringen in die Durchgänge voraus. This body is the one under construction consuming and on the other it is expensive devices to bring forward in the passages.

Ausgehend von dem obigen Stand der Technik liegt der Erfindung die Aufgabe zugrunde, hier Abhilfe zu schaffen. Starting from the above prior art, the invention has for its object to remedy this situation.

Die gestellte Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruches 1 gelöst. The stated object is achieved by the features of claim 1.

Man erkennt, daß die Erfindung jedenfalls dann verwirklicht ist, wenn es sich um einen Körper (Werkstoff) handelt, der mindestens zwei Zustände mit unterschiedlichen physikalischen Eigenschaften einnehmen kann: It will be appreciated that the invention is in any case be achieved if it is a body (material) is, which can assume at least two states with different physical properties:
Im ersten Zustand weist der Körper vorzugsweise einen geringen Querschnitt auf, ist flexibel und weichelastisch, ist mit oder ohne Durchbohrung(en) auf seiner ganzen Länge, oder auf Teilen davon, versehen und kann Verzweigung(en) aufweisen. In the first state of the body preferably has a small cross section, is flexible and soft elastic, is provided with or without through bore (s) along its entire length, or parts thereof, and can branch (es) have.

Im zweiten Zustand weist der Körper (Werkstoff) den gewünschten Querschnitt und Durchmesser sowie die gewünschte Starrheit und Elastizität auf, wobei er einen an mindestens einem Ende offenen Hohlraum definiert, und zwar mit gewünschter Wandstärke und Wandbeschaffenheit. In the second state, the body has (material) the desired cross section and diameter, as well as the desired rigidity and elasticity, wherein it defines an open end at at least one cavity, with the desired wall thickness and wall texture.

Weitere zweckmäßige und vorteilhafte Ausgestaltung der Erfindung gehen aus den Unteransprüchen hervor. Further expedient and advantageous embodiment of the invention will become apparent from the dependent claims.

Die allgemeine Funktionsweise des Körpers (Werkstoffes) kann wie folgt zusammengefaßt werden: The overall functioning of the body (material) can be summarized as follows:
Der Körper wird mittels eines geeigneten Hilfsgerätes I im ersten Zustand räumlich an die gewünschte Stelle gebracht. The body is brought by means of a suitable auxiliary device I in the first state space at the desired location. An der gewünschten Stelle wird der Körper (eventuell mittels mindestens eines weiteren geeigneten Hilfsmittels II, das mit dem ersten Hilfsmittel I identisch oder ein Teil von diesem sein kann) vom ersten Zustand in den zweiten Zustand überführt. At the desired location of the body (possibly via at least one further suitable auxiliary II, which may be identical to the first auxiliary I or a portion thereof) is transferred from the first state to the second state. Spätestens dann, wenn der Körper in den zweiten Zustand übergegangen ist, werden die Hilfsmittel entfernt, worauf der Körper an der gewünschten Stelle die gewünschte Form einnimmt, räumlich fixiert bleibt und seinen Zweck erfüllt, nämlich rohrartige Hohlräume (Durchgänge) bildet, die zuvor verengt oder kollabiert oder inexistent waren, öffnet, offen hält oder auskleidet. At the latest when the body is passed to the second state, the assistants are removed, whereupon the body at the desired position assuming the desired shape, fixed in space remains and serves its purpose, namely tubular cavities (passages) which previously narrowed or collapsed or were non-existent, open, keeping open or lining.

Als Werkstoffe oder Materialien sind solche geeignet, die so beschaffen sind, daß sie mehr als einen Zustand einnehmen können und reversibel oder irreversibel, in kontrollierbarer Weise von einem in einen anderen Zustand übergehen können. As materials or materials are those suitable which are such that they can take more than one state and reversibly or irreversibly, can pass from one state to another in a controllable manner. In mindestens einem Zustand muß der Werkstoff weich, hochelastisch und verformbar sein und in mindestens einem weiteren Zustand muß er fest und/oder zähelastisch und/oder starr sein. In at least one state of the material must be soft, highly elastic and deformable and in at least one other state, it must be solid and / or viscoelastic and / or rigid. Der Übergang von einem in den anderen Zustand muß kontrollierbar und auf physikalische oder chemische oder physikalisch-chemische Weise in Gang gesetzt werden können. The transition from one other in the state must be able to be set to control and to physical or chemical or physical-chemical means in motion. Der Körper kann aus einem oder mehreren solchen Werkstoffen bestehen oder aus einer Kombination von solchen mit herkömmlichen Werkstoffen gebildet sein. The body may be formed with conventional materials consist of one or more of such materials, or a combination of such.

Einige Verwendungen und Einsätze des Körpers gemäß der Erfindung werden nun näher angegeben bzw. erläutert: Some uses and operations of the body according to the invention will now be more fully disclosed or explained:
Medizinische Anwendung: Stent. Medical use: Stent.
Blutgefäßsystem: Wiederdurchgängig machen und/oder offen halten von Arterien oder Venen. Vascular system: make re-Universal and / or keep open arteries or veins.
Verdauungstrakt: Wiederdurchgängig machen und/oder offen halten von Speiseröhre, Gallengang, Pankreasgang. Gastrointestinal: make re-Universal and / or keep open of the esophagus, bile duct, pancreatic duct.
Urogenitalsystem: Wiederdurchgangig machen und/oder offen halten von Ureteren, Urethra, Samenleiter, Eileiter. Urogenital: make Wiederdurchgangig and / or keep open of ureters, urethra, vas deferens, fallopian tubes.
Atemwege: Luftröhre, Bronchien. Respiratory tract: trachea, bronchi.

Anatomisch vorgegebene oder künstliche Zugänge oder Abfluß- oder Einführungswege schaffen von einem Hohlorgan in ein anderes, normales oder pathologisches (Zysten, Kavernen, Hämatome) oder an die Körperoberfläche. Anatomically predetermined or artificial additions or Runoff or introduce ways of creating a hollow organ to another, normal or pathological (cysts, caverns, hematoma) or to the body surface.

Nichtmedizinische Anwendung: No Medical Application:
Tunnelbau, Kanalbau: Auskleiden und stabilisieren von Höhlen-, Tunnel- oder Kanalwänden in stabilem oder unstabilem Grund. Tunnel construction, channel construction: undressing and stabilize by cave, tunnel or channel walls in a stable or unstable ground.

Kanalisation und Röhrensysteme: Leckagen provisorisch oder permanent von innen versiegeln. Sewer and pipe systems: seal leaks temporarily or permanently from the inside. Auskleiden von Röhrensystemen von innen. Lining tube systems from the inside.

Zustandsformen state forms

Im ersten Zustand kann der Körper ein weicher, flachgequetschter Schlauch sein, der um einen in seiner Höhlung liegenden, glatten, flexiblen Führungsdraht aufgewickelt ist. In the first state of the body may be a soft, flat pinched tube, which is wound about a point lying in its cavity, smooth, flexible guidewire. Im zweiten Zustand entfaltet sich und erstarrt dieser Schlauch, so daß er einen durchgängigen Hohlraum bildet und diesen entweder stützt und am kollabieren hindert oder verhindert, daß er sich ausweitet und leckt. In the second state, and solidifies this hose deployed, so that it forms a continuous cavity, and that either supports and prevents collapse on or prevents it expands and leaks. Die Wandbeschaffenheit kann außen rauh und innen glatt sein, die Wand kann perforiert sein oder solide oder halbdurchlässig. The wall texture can be rough and smooth inside outwards, the wall may be perforated or solid or semi-permeable. Der Körper kann im zweiten Zustand (auch im ersten Zustand) auch eine verzweigte Form haben, z. The body may have the second state (in the first state) and a branched form, eg. B. ein Ypsilon bilden. B. forming a Wye. Im ersten Zustand kann der Körper auch ein dünner, weicher Schlauch sein, der im zweiten Zustand als eine erstarrte Röhre mit größerem Durchmesser präsentiert (das Umgekehrte eines Schrumpfschlauches). In the first state of the body can also be a thin soft hose, which as a solidified larger diameter tube presented (the reverse of a heat-shrinkable tube) in the second state. Im ersten Zustand kann der Körper auch ein weicher, dünner Stab sein, der im zweiten Zustand eine erstarrte Röhre mit größerem Durchmesser darstellt. In the first state of the body can also be a soft, thin rod, which is a solidified larger diameter tube in the second state.

Funktionsweise functionality

Es wird z. It is such. B. ein Hilfsgerät C verwendet: Trochar oder Kanüle oder Katheter mit/ohne Führungsdraht. B. an auxiliary device C used: trochar or cannula or catheter with / without a guide wire.

Ferner wird ein Hilfsgerät D verwendet: Sonde mit Geber für Energie in Form von Licht, Wärme, Schallwellen, Mikrowellen oder Druck. Further, a support device D is used: probe with encoder for energy in the form of light, heat, sound waves, microwaves or pressure. Sonde mit Auslaß für Chemikalien oder Flüssigkeiten oder Gasen. Probe with an outlet for chemicals or liquids or gases. Möglich ist auch eine Kombination von beiden. It is also a combination of both. Sobald der Körper mit Hilfsgerät C an die gewünschte Stelle gebracht wurde, wird das Hilfsgerät D (eventuell durch das Hilfsgerät C hindurch) mit dem Körper in Berührung gebracht und die geeignete Energieform oder der geeignete, Stoff freigesetzt, so daß der Körper vom ersten Zustand in den zweiten Zustand über zugehen beginnt. Once the body has been brought to the desired place with auxiliary unit C, the auxiliary device D (possibly by the auxiliary device C therethrough) is brought into contact with the body and the suitable form of energy or suitable release fabric, so that the body from the first state in the second state to pass begins. Nach der Freisetzung und während oder nach dem Übergang vom ersten Zustand in den zweiten Zustand wird das Hilfsgerät D (eventuell auch das Hilfsgerät C) wieder entfernt. After the release and during or after the transition from the first state to the second state, the auxiliary device D (also the auxiliary device C if applicable) is removed again. Die freigesetzte Energie kann ultraviolettes oder sichtbares Licht sein, das die Härtung (Polymerisation) des Körpers beschleunigt. The released energy can be ultraviolet or visible light, which accelerates the curing (polymerization) of the body. Die räumliche Ausdehnung des Körpers kann durch die Härtung (Polymerisation) selbst bewirkt werden oder durch vorherige Ausdehnung mittels eines in den Körper eingeführten Ballons erfolgen. The spatial extent of the body may be effected by the curing (polymerization) itself or by means of a prior expansion inserted in the body balloon. Die räumliche Ausdehnung und/oder der Übergang vom ersten Zustand in den zweiten Zustand kann auch selbst ständig erfolgen und/oder in Gang gesetzt werden, und zwar durch Berührung des Körpers mit dem Umgebungsmaterial des Zielortes, z. The spatial extent and / or the transition from the first state to the second state may also be performed independently and / or are set in motion, by contact of the body with the surrounding material of the destination, z. B. Körperflüssigkeit. As body fluid.

Werkstoffe materials

Als Werkstoffe (Material) können geeignete Kunststoffe (z. B. Polyurethan, Acrylat oder Silicon) sein, die im ersten Zustand noch unvollständig polymerisiert/gehärtet und deshalb noch stark verformbar sind und die durch Bestrahlung mit ultraviolettem/sichtbarem Licht oder durch Erwärmung oder durch Aufnahme von Chemikalien oder Flüssigkeiten oder Gasen beginnen vollständig zu polymerisieren/aushärten, wobei sie sich durch diesen Prozeß selbst ausdehnen oder in derjenigen gewünschten räumlichen Form erstarren, in die sie vorher mit dem Hilfsmittel D gebracht wurden. As materials (material) suitable plastics (eg., Polyurethane, acrylate or silicone) may be, which are therefore still incompletely polymerized in the first state / hardened and yet highly deformable and by irradiation with ultraviolet / visible light or by heating or by Listing of chemicals or liquids or gases begin to fully polymerize / cure, whereby they expand by this process solidify or even in those desired spatial form in which they were taken with the aid of D before. Der Werkstoff kann auch ein "Memory Shape Alloy" (Legierung mit "Formerinnerung") sein, die durch Temperaturänderung vom ersten Zustand in den zweiten Zustand übergeht. The material may also be a "Memory Alloy Shape" (alloys with "shape memory") which merges by temperature change from the first state to the second state. Der Werkstoff kann auch ein im ersten Zustand zusammengepreßter Verbundwerkstoff sein, z. The material can also be a Clenched in the first state composite z. B. ein Vlies oder anderes Fasergewebe, der nach dem Ausdehnen in die gewünschte Form durch Zufuhr von Energie oder Chemikalien oder Flüssigkeiten/Gasen zur Verklebung gebracht wird (zweiter Zustand). B. a non-woven or other fibrous tissue, which is brought to bond after expansion into the desired shape by the application of energy or chemicals or fluids / gases (second state). Der Werkstoff kann auch eine Kombination von Kunststoffen sein, die erst bei innigem Kontakt ihrer Oberflächen vom ersten in den zweiten Zustand übergehen mit/ohne Vermittlung von (flüssigen) Drittstoffen. The material can also be a combination of plastics, which pass only with intimate contact of their surfaces from the first to the second state with / without mediation of (liquid) third materials. Das Material kann auch so beschaffen sein, daß es im ersten Zustand dehydriert ist und bei Wasseraufnahme sich räumlich ausdehnt und dabei den zweiten Zustand erreicht. The material can also be such that it is dehydrated in the first state and spatially expands when water is absorbed and reaches the second state. Schließlich besteht auch die Möglichkeit, die obigen Vorgänge zu kombinieren, und/oder den Werkstoff mit anderen Substanzen zu dotieren oder zu beschichten, welche die Dauerhaftigkeit des Werkstoffes beeinflussen und/oder eine gewünschte Beeinflussung der Umgebung des Werkstoffes bewirken. Finally, the possibility of combining the above operations, and / or the material with other substances is to dope or coat that affect the durability of the material and / or effect a desired influencing of the surroundings of the material.

Claims (11)

1. Körper zum Öffnen, offen halten, zur Bildung und/oder Auskleidung von Hohlräumen, z. 1. body for opening, hold open, for forming and / or lining of cavities, such. B. Arterien, Venen, Bronchien, Gallengänge oder Harnleiter, dadurch gekennzeichnet, daß der Körper nach Einbringung in den oder nach Bildung des Hohlraum(s) die vorgesehene Form einnimmt und sie durch Einwirken physikalischer, chemischer oder mechanischer Einflüsse wie Druck, Temperatur, Bestrahlung mit akustischen oder elektromagnetischen Wellen, oder nach Reaktion mit anderen Substanzen beibehält. B. arteries, veins, bronchi, bile ducts or ureter, characterized in that the body after introduction into or after formation of the hollow space (s) assumes the intended shape and physical, chemical, or mechanical by the action influences such as pressure, temperature, radiation, maintaining with acoustic or electromagnetic waves, or by reaction with other substances.
2. Körper nach Anspruch 1, dadurch gekennzeichnet, daß der Körper mindestens zwei Zustände mit unterschiedlichen physikalischen Beschaffenheiten einnimmt und daß die Übergänge in diese Zustände reversibel oder irreversibel sind. 2. Body according to claim 1, characterized in that the body occupies at least two states with different physical textures and that the transitions are reversible or irreversible in these conditions.
3. Körper nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Körper in mindestens einem Zustand hochelastisch und/oder weich und/oder verformbar ist, während er in mindestens einem anderen Zustand fest und/oder zähelastisch und/oder starr ist. In that the body is 3. Body according to claim 1 or 2, characterized in that in at least one highly elastic state and / or soft and / or deformable while fixed in at least one other state and / or tough-elastic and / or rigid.
4. Körper nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Körper aus Kunststoff, z. 4. Body according to any one of claims 1 to 3, characterized in that the body made of plastic z. B. Polyurethan, Acrylat oder Silicon, besteht, der im Ausgangszustand noch unvollständig polymerisiert (gehärtet) und verformbar ist. As polyurethane, acrylate or silicone, consists of polymerized in the initial state still incomplete (hardened) and is deformable.
5. Körper nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Aushärtung des Körpers (Werkstoffs) durch Bestrahlung mit elektromagnetischer Strahlung, z. 5. Body according to one of claims 1 to 4, characterized in that the hardening of the body (material) by irradiation with electromagnetic radiation such. B. UV- Licht, oder durch Temperaturänderung, oder durch Aufnahme oder Abgabe von Chemikalien, Flüssigkeiten oder Gasen erfolgt. , Is performed for example, UV light, or by temperature change, or by absorption or release of chemicals, liquids or gases.
6. Körper nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Körper aus Metall oder Legierung(en) besteht, z. 6. Body according to one of claims 1 to 5, characterized in that the body made of metal or alloy (s) is, for example. B. Magnesium oder Memory Shape Alloy (Legierung mit Formerinnerung) oder Federstahl. As magnesium or memory shape alloy (shape memory alloy) or spring steel.
7. Körper nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Körper im Ausgangszustand ein zusammengepreßter Verbundwerkstoff, z. 7. Body according to any of claims 1 to 6, characterized in that the body in the initial state a squeezed a composite material, such. B. Vlies oder ein anderes Fasergewebe, ist. B. non-woven or other fibrous tissue.
8. Körper nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Körper im Ausgangszustand dehydriert ist und bei Wasseraufnahme sich räumlich ausdehnt und den Endzustand erreicht. 8. Body according to any one of claims 1 to 7, characterized in that the body is dehydrated in the starting state and extends spatially in water absorption, and reaches the final state.
9. Körper nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Körper im Ausgangszustand einen geringeren Querschnitt und/oder ein geringeres Volumen und/oder eine größere Dichte besitzt. 9. Body according to any one of claims 1 to 8, characterized in that the body has a smaller cross section and / or a smaller volume and / or a greater density in the initial state.
10. Körper nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß der Körper gleichzeitig aus mehreren Werkstoffen besteht. 10. Body according to one of claims 1 to 9, characterized in that the body is at the same time from a plurality of materials.
11. Körper nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß der Körper mit anderen Substanzen dotiert oder beschichtet ist, welche die Dauerhaftigkeit des Werkstoffs beeinflussen und/oder eine gewünschte Beeinflussung der Umgebung des Werkstoffes bewirken. 11. Body according to one of claims 1 to 10, characterized in that the body is doped with other substances, or coated, which influence the durability of the material and / or effect a desired influencing of the surroundings of the material.
DE19944447101 1994-12-29 1994-12-29 Bodies for tube-like passageways e.g. veins and arteries Withdrawn DE4447101A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE9420877U DE9420877U1 (en) 1994-12-29 1994-12-29 Body of tubular passages
DE19944447101 DE4447101A1 (en) 1994-12-29 1994-12-29 Bodies for tube-like passageways e.g. veins and arteries

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DE9420877U DE9420877U1 (en) 1994-12-29 1994-12-29 Body of tubular passages
DE19944447101 DE4447101A1 (en) 1994-12-29 1994-12-29 Bodies for tube-like passageways e.g. veins and arteries

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DE19944447101 Withdrawn DE4447101A1 (en) 1994-12-29 1994-12-29 Bodies for tube-like passageways e.g. veins and arteries

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