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DE3737121C2 - - Google Patents

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Publication number
DE3737121C2
DE3737121C2 DE19873737121 DE3737121A DE3737121C2 DE 3737121 C2 DE3737121 C2 DE 3737121C2 DE 19873737121 DE19873737121 DE 19873737121 DE 3737121 A DE3737121 A DE 3737121A DE 3737121 C2 DE3737121 C2 DE 3737121C2
Authority
DE
Germany
Prior art keywords
sealing device
hollow body
connecting chamber
catheter
instrument
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 - Lifetime
Application number
DE19873737121
Other languages
German (de)
Other versions
DE3737121A1 (en
Inventor
Alexander 8021 Icking De Staeblein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Staeblein Alexander Drmed 50677 Koeln De
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19873737121 priority Critical patent/DE3737121A1/en
Publication of DE3737121A1 publication Critical patent/DE3737121A1/en
Application granted granted Critical
Publication of DE3737121C2 publication Critical patent/DE3737121C2/de
Granted legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34Trocars; Puncturing needles
    • A61B17/3462Trocars; Puncturing needles with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/0017Catheters; Hollow probes specially adapted for long-term hygiene care, e.g. urethral or indwelling catheters to prevent infections
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831Material properties
    • A61B2017/00902Material properties transparent or translucent
    • A61B2017/00907Material properties transparent or translucent for light
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/0067Catheters; Hollow probes characterised by the distal end, e.g. tips
    • A61M25/0074Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable
    • A61M2025/0079Separate user-activated means, e.g. guidewires, guide tubes, balloon catheters or sheaths, for sealing off an orifice, e.g. a lumen or side holes, of a catheter
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02Access sites
    • A61M39/06Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof
    • A61M39/0613Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof with means for adjusting the seal opening or pressure

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Public Health (AREA)
  • Surgery (AREA)
  • Pathology (AREA)
  • Molecular Biology (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Epidemiology (AREA)
  • Urology & Nephrology (AREA)
  • Biophysics (AREA)
  • Pulmonology (AREA)
  • Anesthesiology (AREA)
  • Hematology (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Description

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 for a catheter or instrument introducer according to the Preamble 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 intravasku­ lären 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 A1 known where sealing devices on tweezers Insertion openings of endoscopes are described, which are closed by magnetic force. With those over there shown sealing devices is, however, neither Safe sealing of different cross sections of the introduced instrument, still an arbitrary opening or closing the seal from the outside. In the US 38 33 003 a sealing system is described, the one Sealing larger blood vessels with an intravascu allows clear balloon catheters. DE-GM 77 36 389 illustrated "sealing a trocar sleeve or one Shaft tube in the abdominal wall "also represents a outwardly acting sealing device, which itself however not on the sealing of instruments or Refers to catheters inserted through the trocar sleeve will.  

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 in Hollow organs or systems of hollow organs (e.g. the Blood vessel system) often presents the problem, catheter or other instruments by means of a cut or Introduce stitch created opening. This does not offer Difficulties as long as the diameter of the inserted Instrument is small and uniform over the length, and between the inside of the dotted organ and the There is not too great a pressure difference in the environment. However, it is aggravating if the introduced Instrument often removed from the hollow organ and again should be introduced what z. B. when changing Instrument size or when removing material the 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 routine so-called introducers or "locks" used that predominantly from a piece of very thin-walled plastic Hose exist, which has a stitch in the desired one Hollow organ is inserted and thus a connection of the Creates interior space with the outside world through which easily Catheters and the necessary instruments are introduced can. Exists between the interior of the hollow organ and a noteworthy pressure difference in the external environment, the is to be maintained, so is at the outer end of the Hose attached to a device that has a  perforated or slotted rubber washer or a profiled Elastomeric part from the instrument passed through it is deformed and stretched and closely conforms to the introduced Applies device, creates a seal.

Die Nachteile einer solchen Abdichtung sind folgende:The disadvantages of such a seal are as follows:

  • 1. Bei Verwendung von Kathetern oder Instrumenten mit sehr großem Durchmesser (z. B. Ballonkathetern für die Auf­ weitung von Aortenklappen) ist eine zuverlässige Abdichtung über den gesamten Durchmesserbereich (z. B. 0 mm bis ca. 6 cm Durchmesser) oft nicht zu erreichen.1. When using catheters or instruments with very large diameter (e.g. balloon catheters for opening dilation of aortic valves) is a reliable one Sealing across the entire diameter range (e.g. 0 mm up to approx. 6 cm diameter) often cannot be reached.
  • 2. Müssen empfindliche Instrumente oder Katheter durch die Abdichtung in den Schlauch eingeführt werden, so besteht die Gefahr, daß sie durch den mechanischen Widerstand, der zur Verformung der elastischen Abdichtung überwunden werden muß, beschädigt oder zerstört werden (z. B. Führungsdrähte an Atherektomie-Kathetern).2. Need sensitive instruments or catheters through the Seal to be inserted into the hose, so there is a risk that the mechanical Resistance to deformation of the elastic Sealing must be overcome, damaged or destroyed (e.g. guide wires on Atherectomy catheters).
  • 3. Sollen mit Hilfe von Kathetern Gewebe oder Fremdkörper aus dem Hohlorgan entfernt werden, so besteht die Gefahr, daß die an der Katheterspitze durch Unterdruck oder andere Haltemechanismen festgehaltenen Körper durch die elastische Dichtung abgestreift werden und so verloren gehen.3. Should use tissue or foreign objects with the help of catheters are removed from the hollow organ, so there is Danger of negative pressure on the tip of the catheter or other holding mechanisms be stripped by the elastic seal and so get lost.

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 a Sealing device for catheter and instrument Introduce introductory tools in such a way that also at different cross sections of the catheter or instruments a secure seal, or release the cross section through Influencing 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 device initially mentioned type according to the invention by characterizing part of claim 1 specified features solved. Advantageous embodiments are in the Subclaims specified.

Die Erfindung wird nachfolgend anhand der Figuren erläutert.The invention is described below with reference to the figures explained.

Die Fig. 1a, 1b, 1c zeigen die Wirkungsweise der Abdichtvorrichtung. FIGS. 1a, 1b, 1c show the operation of the sealing device.

Die Fig. 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.

Gemäß Fig. 2 wird alleine oder zusätzlich zu einer Abdichtung des äußeren Dichtsystems/Schleuse 20 eine elastische, schleifende Abdichtung 7 ein hydraulisch oder pneumatisch einstellbarer Hohlkörper 1 eingeführt, der es gestattet, von außen durch Füllen oder Entleeren mit einem strömungsfähigen Medium über den Anschluß 2 sowohl den Durchlaß vollkommen abzudichten oder freizugeben, als auch jedem hindurchgeführten Instrument anzupassen. Dabei ist es durch Füllen des Hohlkörpers 1 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 seal 7 is inserted in addition to a sealing of the external sealing system / sheath 20, a hydraulically or pneumatically adjustable hollow body 1, which makes it possible, from the outside by filling or emptying a fluid medium through the terminal 2 both to completely seal or unblock the passage and to adapt it to any instrument passed through it. By filling the hollow body 1 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 Abdichtvorrichtungen 1 und 7 voneinander räumlich getrennt angebracht und werden durch eine transparente Kammer 4 verbunden. Der von außen einstellbare Hohlkörper 1 ist dabei an der dem Hohlorgan zugewendeten Seite der Kammer 4 angebracht.When used in combination, the two sealing devices 1 and 7 are spatially separated from one another and are connected by a transparent chamber 4 . The externally adjustable hollow body 1 is attached to the side of the chamber 4 facing the hollow organ.

Diese Kammer 4 ist an jedem Ende mit Seitenanschlüssen 5 und 6 versehen, die es ermöglichen, die Kammer 4 zu spülen, um eine optimale Durchsicht zu gewähren und Fremdkörper durch Spülung aus der Kammer 4 zu entfernen.This chamber 4 is provided at each end with side connections 5 and 6 , which make it possible to rinse the chamber 4 in order to ensure optimum visibility and to remove foreign bodies from the chamber 4 by rinsing.

Die transparente Kammer 4 ist durch eine - ohne Werkzeug - schnell zu lösende Verbindung 3 an dem Stutzen beziehungsweise Schleusenkörper 10 befestigt, so daß größere Fremdkörper problemlos aus der Kammer 4 entfernt werden können und andere Katheter (eventuell mit anderen Kammern und Abdichtungen) eingesetzt werden können. Empfindliche Katheter können bei geschlossenem Schleusenkörper 10 in Ruhe und ohne Druckausgleich/ Blutverlust - unter Verwendung eines dünnwandigen Rohres zum Offenhalten der Dichtmembran durch das äußere Dichtsystem 20 geführt werden. Daraufhin kann der Katheter - nach Entfernen des Rohres zum Einführen - ohne mechanische Belastung der Spitze durch den inzwischen geöffneten Hohlkörper 1 im Schleusenkörper 10 in das Hohlorgan vorgeschoben werden.The transparent chamber 4 is fastened to the connection piece or lock body 10 by a connection 3 which can be quickly removed without tools, so that larger foreign bodies can be removed from the chamber 4 without problems and other catheters (possibly with other chambers and seals) can be used . With the sluice body 10 closed, sensitive catheters can be guided through the outer sealing system 20 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 body 1 in the lock body 10 without mechanical loading of the tip.

Die Größe und Form der Kammer 4, sowie Art und Größe der äußeren Abdichtung 7 läßt sich der geplanten Anwendung anpassen. Auch während des Vorgehens läßt sich die Kammer 4 mit ihrer äußeren Abdichtung 7 leicht gegen eine andere austauschen, ohne daß es bei gefülltem Hohlkörper 1, das heißt geschlossenem Schleusenkörper 10, zu einem Blutverlust, Druckausgleich o. ä. kommt.The size and shape of the chamber 4 , as well as the type and size of the outer seal 7 can be adapted to the planned application. Even during the procedure, the chamber 4 with its outer seal 7 can easily be exchanged for another without a loss of blood, pressure equalization or the like occurring when the hollow body 1 is filled, that is to say the lock body 10 is closed.

Durch die Konstruktion der inneren Abdichtung mit dem Hohlkörper 1 ist gewährleistet, daß Gewebe oder Materialien, die mittels eines Katheters o. ä. aus dem Hohlorgan entfernt werden sollen nicht durch den Hohlkörper 1 von dem Katheter abgestreift werden und somit verlorengehen. Dies wird dadurch erreicht, daß der Innenraum des dehnbaren Hohlkörpers 1 mit Unterdruck beaufschlagt wird, sich dieser dem Druckgefälle folgend eng an die Innenwandung des Schleusenkörpers 10 anlegt und somit den vollen Querschnitt freigibt (Fig. 1a).The construction of the inner seal with the hollow body 1 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 body 1 from the catheter and are therefore lost. This is achieved in that the interior of the expandable hollow body 1 is subjected to negative pressure, which, following the pressure drop, presses tightly against the inner wall of the lock body 10 and thus releases the full cross section ( FIG. 1a).

Querschnitt, Länge und Form des Hohlkörpers 1 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 Hohlkörper 1 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 body 1 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 body 1 is made of a stretchable, soft and flexible but nevertheless tear-resistant material (natural or synthetic rubber or soft plastic, possibly textile-reinforced).

Claims (7)

1. Abdichtvorrichtung für ein Katheter- oder Instrumenten-Einführbesteck, bestehend aus einem Stutzen, der mindestens an seinem einen Ende eine erste elastische Abdichtung und bei Verwendung einer Verbindungskammer an seinem anderen Ende, über die Verbindungskammer beabstandet, eine zweite elastische Abdichtung aufweist, welche am Katheter bzw. Instrument abdichtend anliegt beziehungsweise jeweils anliegen, dadurch gekennzeichnet, daß wenigstens die erste Abdichtung beziehungsweise bei Verwendung der Verbindungskammer (4) wenigstens eine der beiden Abdichtungen aus jeweils wenigstens einem Hohlkörper (1) gebildet ist, der zwischen der jeweiligen Innenwand und dem Katheter beziehungsweise Instrument angeordnet ist und daß der Hohlkörper (1) wenigstens einen Anschluß (2) zum einstellbaren Füllen bzw. Entleeren mit einem strömungsfähigen Medium aufweist.1. Sealing device for a catheter or instrument introducer, consisting of a connector which has at least at one end a first elastic seal and when using a connecting chamber at its other end, spaced apart via the connecting chamber, has a second elastic seal, which on Catheter or instrument lies sealingly against each other, characterized in that at least the first seal or, when the connecting chamber ( 4 ) is used, at least one of the two seals is formed from at least one hollow body ( 1 ), which is between the respective inner wall and the catheter or instrument is arranged and that the hollow body ( 1 ) has at least one connection ( 2 ) for adjustable filling or emptying with a fluid medium. 2. Abdichtvorrichtung nach Anspruch 1, dadurch gekenn­ zeichnet, daß der Hohlkörper (1) aus Natur- oder Synthese-Kautschuk oder einem Weichkunststoff, insbesondere einem gewebeverstärkten besteht.2. Sealing device according to claim 1, characterized in that the hollow body ( 1 ) consists of natural or synthetic rubber or a soft plastic, in particular a reinforced fabric. 3. Abdichtvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Hohlkörper (1) mehrere Kammern besitzt, die gleichzeitig oder getrennt voneinander gefüllt beziehungsweise entleert werden können. 3. Sealing device according to claim 1 or 2, characterized in that the hollow body ( 1 ) has a plurality of chambers which can be filled or emptied simultaneously or separately from one another. 4. Abdichtvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Verbindungskammer (4) aus einem transparenten Material besteht.4. Sealing device according to one of claims 1 to 3, characterized in that the connecting chamber ( 4 ) consists of a transparent material. 5. Abdichtvorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Verbindungskammer (4) an ihren beiden Enden Seitenanschlüsse (5 und 6) besitzt, die ein Spülen des Innenraumes ermöglichen.5. Sealing device according to one of claims 1 to 4, characterized in that the connecting chamber ( 4 ) has at its two ends side connections ( 5 and 6 ) which allow flushing of the interior. 6. Abdichtvorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die erste und die zweite Abdichtung als Hohlkörper (1 und 7) ausgebildet sind.6. Sealing device according to one of claims 1 to 5, characterized in that the first and second seals are designed as hollow bodies ( 1 and 7 ). 7. Abdichtvorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Verbindungskammer (4) lösbar vom Stutzen (10) ausgebildet ist.7. Sealing device according to one of claims 1 to 6, characterized in that the connecting chamber ( 4 ) is detachably formed from the nozzle ( 10 ).
DE19873737121 1987-11-02 1987-11-02 Controllable sealing system for catheter and instrument insertion kits Granted DE3737121A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19873737121 DE3737121A1 (en) 1987-11-02 1987-11-02 Controllable sealing system for catheter and instrument insertion kits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873737121 DE3737121A1 (en) 1987-11-02 1987-11-02 Controllable sealing system for catheter and instrument insertion kits

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DE3737121A1 DE3737121A1 (en) 1989-05-11
DE3737121C2 true DE3737121C2 (en) 1990-08-02

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