DE4306478A1 - Drainagevorrichtung, insbesondere Pleuradrainagevorrichtung, und Drainageverfahren - Google Patents
Drainagevorrichtung, insbesondere Pleuradrainagevorrichtung, und DrainageverfahrenInfo
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- DE4306478A1 DE4306478A1 DE4306478A DE4306478A DE4306478A1 DE 4306478 A1 DE4306478 A1 DE 4306478A1 DE 4306478 A DE4306478 A DE 4306478A DE 4306478 A DE4306478 A DE 4306478A DE 4306478 A1 DE4306478 A1 DE 4306478A1
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- drainage
- additional line
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- line
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/84—Drainage tubes; Aspiration tips
- A61M1/85—Drainage tubes; Aspiration tips with gas or fluid supply means, e.g. for supplying rinsing fluids or anticoagulants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M2210/00—Anatomical parts of the body
- A61M2210/10—Trunk
- A61M2210/101—Pleural cavity
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Pulmonology (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- External Artificial Organs (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Display Devices Of Pinball Game Machines (AREA)
- Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
Description
Bei der herkömmlichen Drainage bzw. dem Absaugen von Fluiden
aus einer Körperhöhle, insbesondere der Pleurahöhle, wird
üblicherweise ein einlumiger Schlauch verwendet, der mittels
eines Trocars oder operativ in die Körperhöhle verbracht
wird. Durch Anschluß des Schlauchs an eine Unterdruckquelle
wird Fluid, wie ruft oder Flüssigkeit, aus der Körperhöhle
abgesaugt.
Die meisten herkömmlichen Drainagesysteme für Körperhöhlen
erlauben keine Messung der Strömungsgeschwindigkeit. Oft ist
nicht einmal eine Anzeige vorhanden, ob überhaupt eine Strö
mung aus der Körperhöhle vorliegt. Es sind allerdings auch
Konstruktionen bekannt, bei welchen die Strömung angezeigt
wird, zum Beispiel dadurch, daß der abgesaugte Gasstrom
durch eine Flüssigkeit geführt wird, wobei das Vorliegen ei
ner Strömung durch aufsteigende Blasen angezeigt wird.
Andererseits ist eine quantitative Angabe sowohl über die
initiale als auch über die eventuell fortlaufend abgesaugte
Gas- oder Flüssigkeitsmenge eine klinisch wichtige Informa
tion. So kann beispielsweise bei einer fortbestehenden
Leckage zwischen dem Bronchialsystem und dem Pleuraraum aus
der Menge des pro Minute in die Pleurahöhle nachströmenden
Atemgases beurteilt werden, ob ein spontaner Verschluß der
Leckage zu erwarten ist, oder ob ein operatives Vorgehen er
wogen werden sollte.
Eine exakte Messung der Menge abgesaugter Fluide wäre auch
deshalb wünschenswert, weil der optimale Unterdruck im Drai
nagesystem nur per Durchflußmessung bestimmt werden kann.
Optimal ist der Unterdruck bzw. Sog dann, wenn eine maximale
Gas- oder Flüssigkeitsmenge pro Zeitintervall abgesaugt
wird. Dies ist nicht notwendigerweise ein möglichst hoher
Sog, denn ein zu hoher Sog führt oft zu einem Haften von
anatomischen Strukturen, z. B. peripheren Lungenanteilen bei
der Pleuradrainage, oder Gerinnseln an den Saugöffnungen des
Schlauchs und somit zu einem Verschluß der Drainage.
Die herkömmlichen Drainagesysteme sind auch störanfällig. So
vermindert beispielsweise Flüssigkeit, die in durchhängenden
Teilen des Schlauches liegt, den patientenseitigen Un
terdruck oder hebt ihn ganz auf. Dasselbe gilt für im
Schlauch geronnene Flüssigkeit und für Knickstellen. Derar
tige Störungen treten häufig auch im nichteinsehbaren Teil
des Drainagesystems von der Verbandabdeckung bis zur Körper
höhle, beispielsweise zum Thoraxinnenraum, auf und sind des
halb nur schwer erkennbar. Es kann sich dann immer noch
oder gegebenenfalls erneut Gas oder Flüssigkeit in der Kör
perhöhle des Patienten ansammeln. Einen Hinweis darauf kön
nen nur gründliche Untersuchungsverfahren, wie Auskultation
(Abhören) oder Röntgen, geben. Wenn derartige Probleme nicht
rechtzeitig erkannt werden, können auch kritische Symptome
seitens des Patienten auftreten.
Der Erfindung liegt somit die Aufgabe zugrunde, eine Draina
gevorrichtung zum Absaugen von Fluiden aus einer Körperhöhle
bereitzustellen, mit der die vorstehenden Probleme vermieden
werden können und ein störungsfreier Verlauf der Drainage
sichergestellt wird, insbesondere die Durchgängigkeit des
Drainagesystems einfach sichergestellt und überwacht werden
kann.
Diese Aufgabe wird durch die Merkmale der Patentansprüche
gelöst. Die Erfindung geht dabei von dem Grundgedanken aus,
einen doppelläufigen Schlauch bzw. eine doppelläufige Sonde
bereitzustellen, wobei ein größeres Lumen des Schlauchs dem
Absaugen von Fluiden aus einer Körperhöhle und ein kleineres
Lumen des Schlauchs der permanenten oder intermittierenden
Zufuhr eines Gases in die Körperhöhle dient, so daß prak
tisch eine Durchspülung der Körperhöhle stattfinden kann.
Die Erfindung wird nachstehend anhand einer Pleuradrainage
näher erläutert. Das erfindungsgemäße Prinzip der Doppelläu
figkeit mit ausreichender Kontrolle und Erhaltung der Durch
gängigkeit des Systems sowie gegebenenfalls einer Differenz
bestimmung der Strömung in den beiden Lumen der Sonde ist
aber auch bei anderen chirurgischen Drainagen anwendbar,
z. B. im Bauchraum, in Gelenken und bei urologischen Eingrif
fen, die mit Spülmaßnahmen verbunden sind.
Erfindungsgemäß ist neben einem zum Unterdrucksystem führen
den Drainageschlauch eine zweite Leitung bzw. Zusatzleitung
vorgesehen, die am patientenseitigen Ende, wo sich die Ab
saugöffnung des Drainageschlauchs befindet, mit dem Lumen
des Drainageschlauchs verbunden ist. Vorzugsweise weist
hierzu der Drainageschlauch selbst ein zweites Lumen bzw.
eine zweite Lichtung auf, die die Zusatzleitung bildet. Die
Zusatzleitung kann im Vergleich zum Drainageschlauch einen
relativ kleinen Querschnitt aufweisen. Vorzugsweise ist die
Zusatzleitung über einen Bakterienfilter, einen Durchfluß
messer und ein Sicherheitssperrventil mit der Außenluft ver
bunden. Außerdem ist, vorzugsweise patientenseitig vom
Bakterienfilter, ein Zuspritzventil angeordnet, über das
beispielsweise Flüssigkeiten zum gelegentlichen Freispülen
oder Medikamente, wie Lokalanästhetika oder Antibiotika, in
das System eingebracht werden können.
Der Drainageschlauch, der den absaugenden Schenkel der Lei
tung bildet, führt in der Regel, wie bisher üblich, in ein
Abscheidegefäß. Das Abscheidegefäß ist, vorzugsweise über
einen weiteren Durchflußmesser, mit einer Unterdruckquelle
verbunden. Die Unterdruckquelle kann in bekannter Weise Ein
richtungen zur Unterdruckmessung, zur Vermeidung einer Strö
mungsumkehr und/oder Störungsalarmeinrichtungen, aufweisen.
Im Betrieb der erfindungsgemäßen Drainagevorrichtung strömt
einerseits ein Gas, vorzugsweise Luft, über die Zusatzlei
tung in die Pleurahöhle, während andererseits die abgesaug
ten Fluide aus der Pleurahöhle ausströmen. Das erfindungsge
mäße Meßprinzip besteht darin, die Differenz zwischen dem
Zufluß und dem Abfluß der Pleurahöhle zu messen. Vorzugs
weise wird diese Differenz über ein bestimmtes Zeitintervall
integriert. Aus dieser Differenz läßt sich dann einerseits
die Höhe der geförderten Fluidmenge zu Beginn der Drainage
und andererseits die Menge des bei weiterbestehender Leckage
kontinuierlich oder phasisch in die Pleurahöhle austretenden
Atemgases ermitteln.
Das Vorliegen einer Strömung in beiden Leitungen, d. h. der
Zusatzleitung und dem Drainageschlauch, zeigt die Durchgän
gigkeit an. Diese Strömung, die auch ohne patientenseitigen
Beitrag besteht, sorgt für eine ständige Entleerung an
fallender Flüssigkeiten aus dem Schlauchsystem in das Ab
scheidegefäß.
Die erfindungsgemäße Drainagevorrichtung kann kontinuierlich
betrieben werden. Vorzugsweise kann die Drainagevorrichtung
aber auch so betrieben werden, daß die Zusatzleitung bzw.
der zuführende Schenkel intermittierend geöffnet wird. Ist
die Zusatzleitung gesperrt, reduziert sich die Differenz der
beiden Durchflüsse auf die Strömung im abführenden Teil
(Drainageschlauch), die dann unmittelbar das vom Patienten
kommende Fluidvolumen pro Zeiteinheit ergibt. Das intermit
tierende Öffnen der Zusatzleitung dient einerseits der
Durchspülung, d. h. dem Absaugen von Flüssigkeit, und ande
rerseits der Kontrolle, ob das Drainagesystem weiterhin
durchgängig ist. Beim intermittierenden Betrieb wird beim
Schließen der Zusatzleitung zunächst Flüssigkeit eingesaugt,
die dann beim Öffnen abgesaugt wird, da kein Sogausgleich
stattfindet. Außerdem kann beim intermittierenden Betrieb
die Gefahr verringert werden, daß es beim Ansaugen von unbe
feuchteter Luft zu einer Austrocknung von anatomischen
Strukturen kommt, die in der Nähe der Absaugöffnungen, d. h.
am pleuralen Ende der Sonde liegen.
Bei der erfindungsgemäßen Drainagevorrichtung ist vorzugs
weise vorgesehen, daß im Fall einer negativen Differenz zwi
schen Abfuhr und Zufuhr, d. h., daß in dem zuführenden Schen
kel der Zusatzleitung eine höhere Strömung herrscht als im
abführenden Schenkel des Drainageschlauchs, die Zusatzlei
tung automatisch gesperrt wird, um eine Gasvermehrung im
Pleuraraum zu verhindern.
In einer weiteren Ausführungsform der Erfindung ist eine
wahlweise Zuschaltung der Zusatzleitung vorgesehen. Die An
wendung einer derartigen Drainagevorrichtung ist beispiels
weise dann vorteilhaft, wenn bei zunächst unkompliziertem
Krankheitsverlauf keine aufwendigen Meßvorrichtungen erfor
derlich sind, die Drainagevorrichtung bei Bedarf aber jeder
zeit ergänzt werden kann. Bei dieser Ausführungsform ist
zwischen dem Zuspritzventil und dem Bakterienfilter ein Un
terdruckmanometer in die Zusatzleitung geschaltet und strom
aufwärts vom Bakterienfilter, d. h. im patientenfernen Teil
der Zusatzleitung, ist ein Belüftungsventil vorgesehen. Fer
ner ist die Zusatzleitung an ihrem Ende mittels einer ab
nehmbaren Kappe verschlossen. Nach Abnehmen dieser Kappe
kann die Drainagevorrichtung in dieser Ausführungsform um
eine Meßvorrichtung erweitert werden.
Im Betrieb der Drainagevorrichtung in dieser Ausführungsform
zeigt das Manometer bei fehlendem Gas- bzw. Flüssigkeitszu
fluß aus dem Thoraxraum einen Unterdruck an, der mit dem vor
der Drainage anliegenden Unterdruck identisch ist. Bei Zu
fluß aus dem Thoraxraum zeigt das Manometer dagegen den
Druck in der Pleurahöhle an, also einen geringeren Druck.
Die Druckdifferenz zeigt somit eine Strömung aus dem
Pleuraraum in die Saugung an, und bei bekanntem Leitungswi
derstand kann daraus dann das Strömungsvolumen pro Zeitin
tervall bestimmt werden. Ein bekannter Leitungswiderstand
ist dann anzunehmen, wenn eine Einengung oder Verlegung des
Systems ausgeschlossen werden kann.
Beim Betätigen (Öffnen) des Belüftungsventils in der Zusatz
leitung wird der Unterdruck im ansaugenden Schenkel
(Zusatzleitung) abgebaut und die im abführenden Schenkel
(Drainageschlauch) liegende Flüssigkeit wird in das Abschei
degefäß entleert. Wird danach das Belüftungsventil wieder
geschlossen, erreicht der durch das Manometer angezeigte Un
terdruck im ansaugenden Schenkel im Normalbetrieb wieder den
vorherigen Wert. Ein Verbleiben der Anzeigen des Manometers
auf dem Wert, der bei geöffnetem Belüftungsventil angezeigt
wurde, oder eine verlangsamte Druckverringerung zeigt hinge
gen eine teilweise oder vollständige Verlegung des Systems
an. In diesem Fall kann dann versucht werden, durch Zusprit
zen von steriler Spülflüssigkeit, beispielsweise physiologi
scher NaCl-Lösung, und mehrmaliges Betätigen des Belüftungs
ventils das System wieder durchgängig zu machen. Hingegen
ist bei der herkömmlichen Pleuradrainage mit einlumiger
Sonde im Falle einer derartigen Störung regelmäßig das Anle
gen einer neuen Drainagesonde, d. h. ein neuerlicher operati
ver Eingriff, erforderlich.
Die Erfindung wird nachstehend anhand der Zeichnungen näher
erläutert. Es zeigt
Fig. 1 das patientenseitige Ende einer erfindungsgemä
ßen doppelläufigen Drainagesonde,
Fig. 2a, b einen Querschnitt der erfindungsgemäßen Draina
gesonde sowie einen Mandrin zur Einbringung der
Sonde in den Pleuraraum,
Fig. 3 eine vergrößerte Darstellung der erfindungsgemä
ßen Drainagesonde,
Fig. 4 eine Ausführungsform der erfindungsgemäßen Drai
nagevorrichtung,
Fig. 5 eine weitere Ausführungsform der erfindungsgemä
ßen Drainagevorrichtung mit ankoppelbaren Meß
einrichtungen,
Fig. 6 eine herkömmliche Pleuradrainage
(Thoraxdrainage) nach Bülau, und
Fig. 7 verschiedene Störungsmöglichkeiten bei der her
kömmlichen Pleuradrainage gemäß Fig. 6.
Bei der Darstellung der herkömmlichen Pleuradrainage nach
Bülau in Fig. 6 ist mit 10 die Lunge des Patienten, mit 12
die Pleurahöhle (Pleuraraum) und mit 13 das Rippenfell
(Pleura parietalis) bezeichnet. Der Drainageschlauch (Drain)
14 ist mit seiner Ansaugöffnung 16 in die Pleurahöhle 12 des
Patienten eingelegt. Die Pfeile im Drainageschlauch 14 geben
die Strömungsrichtung an. Ein Flüssigkeitsabscheidegefäß 18
nimmt Ergußflüssigkeit, Blut etc. auf. Eine Durchflußmeßvor
richtung (Flowkontrolle) 20 zeigt das Vorhandensein einer
Strömung, d. h. den aktuellen Abtransport eines Fluides, wie
Gas oder Flüssigkeit, aus der Pleurahöhle 12 des Patienten
an, wenn in einer in der Durchflußmeßvorrichtung enthalten
den Flüssigkeit 21 Blasen aufsteigen. Ein Wasserschloß 22
dient als Druckregelung und begrenzt durch den Einstrom von
atmosphärischer Luft durch das mittlere Rohr des Wasser
schlosses 22 den Unterdruck auf die durch die Eintauchtiefe
des mittleren Rohrs gegebene Höhe. Der Unterdruck wird durch
eine Saugpumpe 24 erzeugt und an einem Manometer 26 gemes
sen. Die drei Einheiten 18, 20 und 22 sowie das Manometer 26
können auch in einer einzigen Überwachungsvorrichtung zusam
mengefaßt sein.
Fig. 7 zeigt verschiedene Störungsmöglichkeiten an einer
herkömmlichen Pleuradrainage gemäß Fig. 6. Dabei sind die
Rippen des Patienten mit 30, die Haut mit 32 und ein Verband
mit 34 bezeichnet. Bei 36 und 37 kann eine Verlegung der
Drainage durch anliegende Lunge oder Rippenfell oder durch
geronnene Flüssigkeit im Pleuraspalt auftreten. Bei 38 kann
eine Verlegung durch Abknickung oder geronnene Flüssigkeit
auftreten. Bei 39 kann schließlich eine Verlegung durch
Flüssigkeit in einem durchhängenden Schlauchabschnitt auf
treten. Dabei ist zu beachten, daß die Grenze der optischen
Kontrollmöglichkeit durch den Verband 34 gegeben ist, so daß
beispielsweise die Verlegungen bei 36, 37 und 38 durch opti
sche Kontrolle nicht erkannt werden können. Allerdings wer
den in der Praxis auch Verlegungen durch Flüssigkeiten in
durchhängenden Schlauchabschnitten, wie bei 39, nicht immer
rechtzeitig erkannt.
Fig. 1 zeigt das patientenseitige Ende eines erfindungsge
mäßen doppelläufigen Drains 50. Dabei sind in Fig. 1 glei
che Teile mit den gleichen Bezugszeichen wie in den Fig.
6 und 7 bezeichnet.
Fig. 2a und 2b zeigen eine Möglichkeit der Einbringung
der erfindungsgemäßen Drainagesonde 50. Dabei ist mit 52 der
abführende Teil der Sonde bezeichnet, der in seiner Funktion
einem herkömmlichen Drainageschlauch entspricht. Mit 54 ist
das zuführende Lumen bzw. die zuführende Lichtung bezeich
net. Der Unterschied in der Lichtungsweite zwischen zufüh
rendem und abführendem Teil sorgt dafür, daß der Unterdruck
am pleuranahen Sondenende etwa dem am patientenfernen Ende
mittels einer Unterdruckquelle applizierten Sog gleicht und
stellt den größeren Querschnittsanteil dem materialabführen
den Teil der Sonde zur Verfügung. Sowohl der Querschnitt ge
mäß Fig. 2a als auch die geschnittene Seitenansicht gemäß
Fig. 2b zeigt einen stabilen Mandrin 56, mit dem die erfin
dungsgemäße Sonde in den Pleuraraum des Patienten einge
bracht werden kann und der in das größere abführende Lumen
52 der Sonde 50 eingelegt wird. Mit 58 ist ein Griff des
Mandrins 56 bezeichnet.
In der vergrößerten schematischen Skizze gemäß Fig. 3 ist
am Ende der zuführenden Leitung (Zusatzleitung) 54 ein An
schluß 55 zur Ankopplung desjenigen Teils der Zusatzleitung
erkennbar, der ein Zuspritzventil, einen Bakterienfilter,
ein Sperrventil und eine Druckmeßvorrichtung aufnehmen kann.
Die abführende Leitung kann ebenfalls einen Anschluß aufwei
sen, an dem ein weiterer Schlauchteil angekoppelt wird, der
zum Flüssigkeitsabscheidegefäß führt.
In Fig. 4 ist eine bevorzugte Ausführungsform der erfin
dungsgemäßen Drainagevorrichtung dargestellt. In der zufüh
renden Zusatzleitung 54 ist, von der Patientenseite her ge
sehen, zunächst ein Zuspritzventil 60 und dann
(stromaufwärts) ein Bakterienfilter 62 angeordnet. Innerhalb
der Umrandung (Kasten 70) befindet sich der wiederverwend
bare Teil der Vorrichtung. Der wiederverwendbare Teil 70
weist zwei Durchflußmeßfühler 74 und 78 im zuführenden Teil
54 bzw. abführenden Teil 52 des Drains 50, ein Sicherheits-
Sperrventil 72 und optional ein Manometer 76 auf. Das Mano
meter 76 ist nicht zwingend notwendig, da es an sich auch in
üblichen Unterdruckquellen vorhanden ist. Ferner ist ein
elektronisches Meß-, Steuer- und Anzeigegerät 80 vorgesehen.
Das Gerät 80 zeigt die Meßwerte und die sich aus ihnen erge
benden Rechengrößen, wie die Strömungsdifferenz zwischen Ab- und
Zuleitung an, schließt bei Strömungsdifferenzumkehr,
d. h. Einstrom größer als Ausstrom, das Sicherheits-Sperrven
til 72 und sorgt bei intermittierendem Betrieb für den peri
odischen Verschluß des Ventils 72. Ferner zeigt es Störungen
an und signalisiert Alarmzustände. Mit 82 ist der Luft- bzw.
Spülgaseintritt der Zusatzleitung 54 bezeichnet, während der
gestrichelte Teil mit dem Pfeil am stromabwärtigen Ende der
abführenden Leitung zu einer Unterdruckquelle 84 führt.
Bei der Ausführung gemäß Fig. 5, die zu einer späte
ren Zuschaltung der Meßvorrichtungen geeignet ist, ist im
zuführenden Schenkel (Zusatzleitung) 54 ein Manometer 90
vorgesehen, das zwischen dem Zuspritzventil 60 und dem
Bakterienfilter 62 liegt, sowie stromaufwärts ein Belüf
tungsventil 92 und ein abnehmbarer Verschluß 94. Statt des
Verschlusses 94 kann auch ein Sperrventil zur programmierten
intermittierenden Gasdurchspülung aufgesetzt sein, wie vor
stehend beschrieben. Bei der Erweiterung kann ferner neben
dem Manometer 76 bei 96 ein Durchflußmeßgerät (Flowmeter)
angeschlossen werden, ebenso kann auch zwischen dem Belüf
tungsventil 92 und dem Verschluß 94 bzw. dem Sperrventil ein
Durchflußmeßgerät geschaltet werden.
Claims (14)
1. Drainagevorrichtung zum Absaugen von Fluiden aus einer
Körperhöhle, insbesondere der Pleurahöhle, mit einem
Drainageschlauch (84) zum Absaugen der Fluide und einer
Einrichtung (82) zum Ausbilden eines Unterdrucks in der
Körperhöhle (12), dadurch gekennzeichnet, daß eine Zu
satzleitung (54) vorgesehen ist, deren Lumen am patien
tenseitigen Ende in Fluidverbindung mit dem Lumen des
Drainageschlauches (52) steht.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß
der Drainageschlauch (52) und die Zusatzleitung (54)
miteinander verbunden und zumindest teilweise als dop
pelläufiger Schlauch oder doppelläufige Drainagesonde
(50) ausgebildet sind.
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeich
net, daß in der Zusatzleitung (54) ein Bakterienfilter
(62) angeordnet ist.
4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch
gekennzeichnet, daß in der Zusatzleitung (54) ein Durch
flußmesser (74) angeordnet ist.
5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch
gekennzeichnet, daß in der Zusatzleitung (54) ein Sperr
ventil (72) angeordnet ist.
6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch
gekennzeichnet, daß in der Zusatzleitung (54) ein Zu
spritzventil (60) vorgesehen ist.
7. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch
gekennzeichnet, daß die Vorrichtung derart ausgebildet
ist, daß die Differenz der Fluidströmungen in dem Drai
nageschlauch (52) und in der Zusatzleitung (54) meßbar
ist.
8. Vorrichtung nach einem der Ansprüche 1 bis 7, gekenn
zeichnet durch eine Einrichtung (72) zum automatischen
Sperren der Zusatzleitung (54), wenn die Strömung in der
Zusatzleitung (54) höher ist als im Drainageschlauch
(52).
9. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch
gekennzeichnet, daß die Zusatzleitung (54) intermittie
rend betreibbar ist.
10. Vorrichtung nach einem der Ansprüche 1 bis 9, dadurch
gekennzeichnet, daß die Zusatzleitung (54) verschließbar
ist.
11. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet,
daß in der Zusatzleitung (54) vom patientenseitigen Ende
her nacheinander das Zuspritzventil (60), ein Manometer
(90), das Bakterienfilter (62) und ein Belüftungsventil
(92) angeordnet sind.
12. Vorrichtung nach einem der Ansprüche 1 bis 11, dadurch
gekennzeichnet, daß der Leitungsquerschnitt des Draina
geschlauchs (52) größer ist als der Leitungsquerschnitt
der Zusatzleitung (54).
13. Vorrichtung nach einem der Ansprüche 2 bis 12, dadurch
gekennzeichnet, daß der Drainageschlauch (52) und die
Zusatzleitung (54) in dem doppelläufigen Drain (50) ko
axial ausgebildet sind.
14. Doppelläufiger Drain mit einem Drainageteil (52) und ei
ner Zusatzleitung (54), die an einem Ende miteinander in
Fluidverbindung stehen, insbesondere zur Verwendung in
einer Drainagevorrichtung nach einem der Ansprüche 1 bis
13, gekennzeichnet durch Einrichtungen (74, 78, 80) zum
Messen der Differenz zwischen der Fluidströmung in dem
Drainageteil (52) und der Fluidströmung in der Zusatz
leitung (54).
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4306478A DE4306478A1 (de) | 1993-03-02 | 1993-03-02 | Drainagevorrichtung, insbesondere Pleuradrainagevorrichtung, und Drainageverfahren |
DE9321589U DE9321589U1 (de) | 1993-03-02 | 1993-03-02 | Drainagevorrichtung, insbesondere Pleuradrainagevorrichtung |
AT94909105T ATE159176T1 (de) | 1993-03-02 | 1994-03-02 | Pleuradrainagevorrichtung |
US08/513,833 US5738656A (en) | 1993-03-02 | 1994-03-02 | Drainage apparatus and method of use |
PCT/EP1994/000613 WO1994020152A1 (de) | 1993-03-02 | 1994-03-02 | Drainagevorrichtung, insbesondere pleuradrainagevorrichtung und drainageverfahren |
DE59404352T DE59404352D1 (de) | 1993-03-02 | 1994-03-02 | Pleuradrainagevorrichtung |
EP94909105A EP0692987B1 (de) | 1993-03-02 | 1994-03-02 | Pleuradrainagevorrichtung |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4306478A DE4306478A1 (de) | 1993-03-02 | 1993-03-02 | Drainagevorrichtung, insbesondere Pleuradrainagevorrichtung, und Drainageverfahren |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4306478A1 true DE4306478A1 (de) | 1994-09-08 |
Family
ID=6481738
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4306478A Withdrawn DE4306478A1 (de) | 1993-03-02 | 1993-03-02 | Drainagevorrichtung, insbesondere Pleuradrainagevorrichtung, und Drainageverfahren |
DE59404352T Expired - Lifetime DE59404352D1 (de) | 1993-03-02 | 1994-03-02 | Pleuradrainagevorrichtung |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE59404352T Expired - Lifetime DE59404352D1 (de) | 1993-03-02 | 1994-03-02 | Pleuradrainagevorrichtung |
Country Status (5)
Country | Link |
---|---|
US (1) | US5738656A (de) |
EP (1) | EP0692987B1 (de) |
AT (1) | ATE159176T1 (de) |
DE (2) | DE4306478A1 (de) |
WO (1) | WO1994020152A1 (de) |
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Also Published As
Publication number | Publication date |
---|---|
US5738656A (en) | 1998-04-14 |
ATE159176T1 (de) | 1997-11-15 |
EP0692987A1 (de) | 1996-01-24 |
EP0692987B1 (de) | 1997-10-15 |
DE59404352D1 (de) | 1997-11-20 |
WO1994020152A1 (de) | 1994-09-15 |
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