Die Erfindung geht aus von einer Abdichtvorrichtung für ein Katheter- oder Instrumenten-Einführbesteck gemäß dem Oberbegriff des Anspruches 1.The invention relates to a sealing device fora catheter or instrument introducer according to thePreamble of claim 1.
Ein derartiges System ist bereits aus der DE 32 42 870 A1 bekannt, wo Abdichtvorrichtungen an Pinzetten-Einführungsöffnungen von Endoskopen beschrieben werden, die durch Magnetkraft geschlossen werden. Bei den dort dargestellten Abdichtvorrichtungen ist jedoch weder eine sichere Abdichtung verschiedener Querschnitte des eingeführten Instrumentes, noch ein willkürliches Öffnen oder Schließen der Abdichtung von außen möglich. In der US 38 33 003 ist ein Abdichtsystem beschrieben, das eine Abdichtung größerer Blutgefäße durch einen intravaskulären Ballonkatheter ermöglicht. Die in DE-GM 77 36 389 dargestellte "Abdichtung einer Trokarhülse oder eines Schaftrohres in der Bauchdecke" stellt ebenfalls eine nach außen wirkende Abdichtvorrichtung dar, die sich jedoch nicht auf die Abdichtung von Instrumenten oder Kathetern bezieht, die durch die Trokarhülse eingeführt werden.Such a system is already known from DE 32 42 870 A1known where sealing devices on tweezersInsertion openings of endoscopes are described,which are closed by magnetic force. With those over thereshown sealing devices is, however, neitherSafe sealing of different cross sections of theintroduced instrument, still an arbitrary openingor closing the seal from the outside. In theUS 38 33 003 a sealing system is described, the oneSealing larger blood vessels with an intravascuallows clear balloon catheters. DE-GM 77 36 389illustrated "sealing a trocar sleeve or oneShaft tube in the abdominal wall "also represents aoutwardly acting sealing device, which itselfhowever not on the sealing of instruments orRefers to catheters inserted through the trocar sleevewill.
Bei Eingriffen operativer- oder nichtoperativer Art in Hohlorgane oder Systeme von Hohlorganen (z. B. das Blutgefäßsystem) stellt sich häufig das Problem, Katheter oder andere Instrumente durch eine mittels Schnitt oder Stich geschaffene Öffnung einzuführen. Dies bietet keine Schwierigkeiten, solange der Durchmesser des einzuführenden Instrumentes klein und über die Länge gleichmäßig groß ist, und zwischen dem Inneren des punktierten Organs und der Umgebung kein zu großer Druckunterschied herrscht. Allerdings wirkt es erschwerend, wenn das eingeführte Instrument häufig aus dem Hohlorgan entfernt und wieder eingeführt werden soll, was z. B. bei Wechsel der Instrumentengröße oder bei einer Entfernung von Material aus dem Hohlorgan notwendig wird.In the event of surgical or non-surgical interventions inHollow organs or systems of hollow organs (e.g. theBlood vessel system) often presents the problem, catheteror other instruments by means of a cut orIntroduce stitch created opening. This does not offerDifficulties as long as the diameter of the insertedInstrument is small and uniform over the length,and between the inside of the dotted organ and theThere is not too great a pressure difference in the environment.However, it is aggravating if the introducedInstrument often removed from the hollow organ and againshould be introduced what z. B. when changingInstrument size or when removing materialthe hollow organ becomes necessary.
Um diese Maßnahmen zu erleichtern werden bisher routinemäßig sogenannte Einführbestecke oder "Schleusen" verwendet, die vorwiegend aus einem Stück sehr dünnwandigen Kunststoff-Schlauches bestehen, der über einen Stich in das gewünschte Hohlorgan eingelegt wird und somit eine Verbindung des Innenraumes mit der Außenwelt schafft, durch die problemlos Katheter und die notwendigen Instrumente eingeführt werden können. Besteht zwischen dem Innenraum des Hohlorganes und dem äußeren Umfeld ein nennenswerter Druckunterschied, der aufrechterhalten werden soll, so ist am äußeren Ende des Schlauches eine Einrichtung angebracht, die über eine gelochte oder geschlitzte Gummischeibe oder ein profiliertes Elastomer-Teil, das von dem hindurchgeführten Instrument verformt und aufgedehnt wird und sich eng an das eingeführte Gerät anlegt, eine Abdichtung herbeiführt.So far, to facilitate these measures have been routineso-called introducers or "locks" used thatpredominantly from a piece of very thin-walled plasticHose exist, which has a stitch in the desired oneHollow organ is inserted and thus a connection of theCreates interior space with the outside world through which easilyCatheters and the necessary instruments are introducedcan. Exists between the interior of the hollow organ anda noteworthy pressure difference in the external environment, theis to be maintained, so is at the outer end of theHose attached to a device that has a perforated or slotted rubber washer or a profiledElastomeric part from the instrument passed through itis deformed and stretched and closely conforms to the introducedApplies device, creates a seal.
Die Nachteile einer solchen Abdichtung sind folgende:The disadvantages of such a seal are as follows:
Die Aufgabe der Erfindung besteht darin, eine Abdichtvorrichtung für Katheter- und Instrumenten-Einführbestecke derart weiterzubilden, daß auch bei unterschiedlichen Querschnitten des Katheters beziehungsweise Instrumentes ein sicheres Abdichten, beziehungsweise Freigeben des Querschnittes durch Beeinflussung der Abdichtung von außen ermöglicht wird.The object of the invention is aSealing device for catheter and instrumentIntroduce introductory tools in such a way that also atdifferent cross sections of the catheteror instruments a secure seal,or release the cross section throughInfluencing the seal from the outside is made possible.
Diese Aufgabe wird bei einer Abdichtvorrichtung der eingangs genannten Art erfindungsgemäß durch die im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmale gelöst. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen angegeben.This task is the sealing deviceinitially mentioned type according to the invention bycharacterizing part of claim 1 specified featuressolved. Advantageous embodiments are in theSubclaims specified.
Die Erfindung wird nachfolgend anhand der Figuren erläutert.The invention is described below with reference to the figuresexplained.
DieFig. 1a, 1b, 1c zeigen die Wirkungsweise der Abdichtvorrichtung.FIGS. 1a, 1b, 1c show the operation of the sealing device.
DieFig. 1d zeigt eine Abdichtvorrichtung bei der der Hohlkörper mehrere Kammern besitzt.Fig. 1d shows a sealing device wherein the hollow body has a plurality of chambers.
GemäßFig. 2 wird alleine oder zusätzlich zu einer Abdichtung des äußeren Dichtsystems/Schleuse20 eine elastische, schleifende Abdichtung7 ein hydraulisch oder pneumatisch einstellbarer Hohlkörper1 eingeführt, der es gestattet, von außen durch Füllen oder Entleeren mit einem strömungsfähigen Medium über den Anschluß2 sowohl den Durchlaß vollkommen abzudichten oder freizugeben, als auch jedem hindurchgeführten Instrument anzupassen. Dabei ist es durch Füllen des Hohlkörpers1 mit nicht zu hohem Druck auch möglich, sowohl eine Abdichtung, als auch eine leichte Verschiebbarkeit der hindurchgeführten Katheter oder Instrumente zu erreichen (Fig. 1a bis 1c).FIG. 2 is used alone or an elastic abrasive seal7 is inserted in addition to a sealing of the external sealing system / sheath20, a hydraulically or pneumatically adjustable hollow body1, which makes it possible, from the outside by filling or emptying a fluid medium through the terminal2 both to completely seal or unblock the passage and to adapt it to any instrument passed through it. By filling the hollow body1 with a pressure that is not too high, it is also possible to achieve both sealing and easy displacement of the catheters or instruments passed through (FIGS. 1a to 1c).
Bei kombiniertem Einsatz sind die beiden Abdichtvorrichtungen1 und7 voneinander räumlich getrennt angebracht und werden durch eine transparente Kammer4 verbunden. Der von außen einstellbare Hohlkörper1 ist dabei an der dem Hohlorgan zugewendeten Seite der Kammer4 angebracht.When used in combination, the two sealing devices1 and7 are spatially separated from one another and are connected by a transparent chamber4 . The externally adjustable hollow body1 is attached to the side of the chamber4 facing the hollow organ.
Diese Kammer4 ist an jedem Ende mit Seitenanschlüssen5 und6 versehen, die es ermöglichen, die Kammer4 zu spülen, um eine optimale Durchsicht zu gewähren und Fremdkörper durch Spülung aus der Kammer4 zu entfernen.This chamber4 is provided at each end with side connections5 and6 , which make it possible to rinse the chamber4 in order to ensure optimum visibility and to remove foreign bodies from the chamber4 by rinsing.
Die transparente Kammer4 ist durch eine - ohne Werkzeug - schnell zu lösende Verbindung3 an dem Stutzen beziehungsweise Schleusenkörper10 befestigt, so daß größere Fremdkörper problemlos aus der Kammer4 entfernt werden können und andere Katheter (eventuell mit anderen Kammern und Abdichtungen) eingesetzt werden können. Empfindliche Katheter können bei geschlossenem Schleusenkörper10 in Ruhe und ohne Druckausgleich/Blutverlust - unter Verwendung eines dünnwandigen Rohres zum Offenhalten der Dichtmembran durch das äußere Dichtsystem20 geführt werden. Daraufhin kann der Katheter - nach Entfernen des Rohres zum Einführen - ohne mechanische Belastung der Spitze durch den inzwischen geöffneten Hohlkörper1 im Schleusenkörper10 in das Hohlorgan vorgeschoben werden.The transparent chamber4 is fastened to the connection piece or lock body10 by a connection3 which can be quickly removed without tools, so that larger foreign bodies can be removed from the chamber4 without problems and other catheters (possibly with other chambers and seals) can be used . With the sluice body10 closed, sensitive catheters can be guided through the outer sealing system20 at rest and without pressure equalization / blood loss - using a thin-walled tube to keep the sealing membrane open. The catheter can then - after removing the tube for insertion - be pushed into the hollow organ through the now open hollow body1 in the lock body10 without mechanical loading of the tip.
Die Größe und Form der Kammer4, sowie Art und Größe der äußeren Abdichtung7 läßt sich der geplanten Anwendung anpassen. Auch während des Vorgehens läßt sich die Kammer4 mit ihrer äußeren Abdichtung7 leicht gegen eine andere austauschen, ohne daß es bei gefülltem Hohlkörper1, das heißt geschlossenem Schleusenkörper10, zu einem Blutverlust, Druckausgleich o. ä. kommt.The size and shape of the chamber4 , as well as the type and size of the outer seal7 can be adapted to the planned application. Even during the procedure, the chamber4 with its outer seal7 can easily be exchanged for another without a loss of blood, pressure equalization or the like occurring when the hollow body1 is filled, that is to say the lock body10 is closed.
Durch die Konstruktion der inneren Abdichtung mit dem Hohlkörper1 ist gewährleistet, daß Gewebe oder Materialien, die mittels eines Katheters o. ä. aus dem Hohlorgan entfernt werden sollen nicht durch den Hohlkörper1 von dem Katheter abgestreift werden und somit verlorengehen. Dies wird dadurch erreicht, daß der Innenraum des dehnbaren Hohlkörpers1 mit Unterdruck beaufschlagt wird, sich dieser dem Druckgefälle folgend eng an die Innenwandung des Schleusenkörpers10 anlegt und somit den vollen Querschnitt freigibt (Fig. 1a).The construction of the inner seal with the hollow body1 ensures that tissues or materials which are to be removed from the hollow organ by means of a catheter or the like are not stripped by the hollow body1 from the catheter and are therefore lost. This is achieved in that the interior of the expandable hollow body1 is subjected to negative pressure, which, following the pressure drop, presses tightly against the inner wall of the lock body10 and thus releases the full cross section (FIG. 1a).
Querschnitt, Länge und Form des Hohlkörpers1 können den Anforderungen entsprechend gewählt werden. Je nach abzudichtendem Querschnitt sind dafür eine oder mehrere Kammern, die gleichzeitig oder getrennt voneinander gefüllt werden vorzusehen (Fig. 1a,Fig. 1d). Der Hohlkörper1 ist aus einem dehnbaren, weichen und flexiblen aber dennoch reißfesten Material gefertigt (Natur- oder Synthesekautschuk oder Weichkunststoff, eventuell textilverstärkt).The cross section, length and shape of the hollow body1 can be chosen according to the requirements. Depending be sealed cross-section for one or more chambers that are filled to provide simultaneously or separately from each other(Fig. 1a,Fig. 1d). The hollow body1 is made of a stretchable, soft and flexible but nevertheless tear-resistant material (natural or synthetic rubber or soft plastic, possibly textile-reinforced).
Application Number | Priority Date | Filing Date | Title |
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DE19873737121DE3737121A1 (en) | 1987-11-02 | 1987-11-02 | Controllable sealing system for catheter and instrument insertion kits |
Application Number | Priority Date | Filing Date | Title |
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DE19873737121DE3737121A1 (en) | 1987-11-02 | 1987-11-02 | Controllable sealing system for catheter and instrument insertion kits |
Publication Number | Publication Date |
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DE3737121A1 DE3737121A1 (en) | 1989-05-11 |
DE3737121C2true DE3737121C2 (en) | 1990-08-02 |
Application Number | Title | Priority Date | Filing Date |
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DE19873737121GrantedDE3737121A1 (en) | 1987-11-02 | 1987-11-02 | Controllable sealing system for catheter and instrument insertion kits |
Country | Link |
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DE (1) | DE3737121A1 (en) |
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Date | Code | Title | Description |
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OP8 | Request for examination as to paragraph 44 patent law | ||
8122 | Nonbinding interest in granting licenses declared | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner | Owner name:STAEBLEIN, ALEXANDER, DR.MED., 50677 KOELN, DE | |
8339 | Ceased/non-payment of the annual fee | ||
8320 | Willingness to grant licenses declared (paragraph 23) |