DE3933583A1 - Recording component of treated coagulant automatically - using measurement shaft with integral photometer, agitator drive and controlled heating element - Google Patents

Recording component of treated coagulant automatically - using measurement shaft with integral photometer, agitator drive and controlled heating element

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Publication number
DE3933583A1
DE3933583A1 DE19893933583 DE3933583A DE3933583A1 DE 3933583 A1 DE3933583 A1 DE 3933583A1 DE 19893933583 DE19893933583 DE 19893933583 DE 3933583 A DE3933583 A DE 3933583A DE 3933583 A1 DE3933583 A1 DE 3933583A1
Authority
DE
Germany
Prior art keywords
coagulant
photometer
agitator drive
heating element
controlled heating
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.)
Withdrawn
Application number
DE19893933583
Other languages
German (de)
Inventor
Aribert Komanns
H D Prof Dr Reuter
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.)
Individual
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 DE19893933583 priority Critical patent/DE3933583A1/en
Priority to DE19904003008 priority patent/DE4003008A1/en
Publication of DE3933583A1 publication Critical patent/DE3933583A1/en
Withdrawn legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12QMEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
    • C12Q1/00Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
    • C12Q1/56Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving blood clotting factors, e.g. involving thrombin, thromboplastin, fibrinogen
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing

Abstract

Coagulant in temp. controlled coagulation pipes is coated with lyse-activated reagent and the resulting products intermittently agitated in a magnetic stirring system. The increase in the transmission of light is measured photometrically. A measurement shaft 82) which holds the coagulant pipes (1) contains an integral photometer (3,8) and an agitator drive (6,7) in its base. A minimum distance must be maintained between the base of the shaft and the photometer plane and an intermittent agitator drive must be ensured in order to eliminate disturbances by floating coagulant. A controlled heating element (5) is also integrated into the measurement shaft system at its base. USE/ADVANTAGE - Enables the automatic recording of a component of treated coagulant for which previously no method of recording has existed.

Description

Die Erfindung betrifft ein Verfahren zur Registrierung der Gerinnsellyse von retrahierten Gerinnseln.The invention relates to a method for registration the clot lysis of retracted clots.

Werden 280 µl plättchenreiches Citratplasma in Gerin­ nungsröhrchen mit 80 µl Thrombin-Reagenz (60 IE/ml) versetzt und bei 37°C inkubiert, so gerinnt das Plasma innerhalb einer Minute durch. Wenige Minuten später kommt die Gerinnselretraktion sichtbar in Gang und er­ streckt sich über ungefähr weitere 30 Minuten. Im Zuge der Gerinnselretraktion verkürzt sich das primäre Ge­ rinnsel auf einen Bruchteil seiner ursprünglichen Län­ ge. Durch Oberflächenadhäsion getragen schwimmt es am oberen Flüssigkeitsmeniskus der Serumphase. Das retra­ hierte Gerinnsel wird nun in ein zweites Röhrchen überführt, daß NaCl-Lösung und ein Rührstäbchen ent­ hält. Aufgrund seines höheren spez. Gewichtes sinkt es bis auf den Röhrchengrund. Nun werden Lyseaktivatoren (Urokinase) zugegeben und das Magnetrührersystem, wel­ ches intermittierend arbeitet, in Gang gesetzt. Nach einer kurzen Verzögerungsphase von wenigen Minuten be­ ginnt die Gerinnsellyse. Die hierbei entstehenden Spaltprodukte bedingen eine Transmissionszunahme im Überstand. Diese Transmissionszunahme kann jeweils in der Phase, in der das Magnetrührersystem nicht arbei­ tet und sich das Gerinnsel am Röhrchengrund befindet, photometrisch gemessen und zeitlich registriert wer­ den.280 µl platelet-rich citrate plasma in Gerin tube with 80 µl thrombin reagent (60 IU / ml) added and incubated at 37 ° C, the plasma coagulates within a minute. Few minutes later the clot retraction starts visibly and he stretches for about another 30 minutes. In the course of the clot retraction shortens the primary Ge trickle to a fraction of its original length ge. It swims when carried by surface adhesion upper fluid meniscus of the serum phase. The retra The clot is now placed in a second tube transferred that NaCl solution and a stir bar ent holds. Because of its higher spec. Weight drops down to the bottom of the tube. Now lysis activators (Urokinase) added and the magnetic stirrer system, wel ches works intermittently, started. To a short delay of a few minutes starts the clot lysis. The resulting Fission products cause an increase in transmission in the Got over. This increase in transmission can in each case the phase in which the magnetic stirrer system is not working and the clot is at the bottom of the tube, who is measured photometrically and registered over time the.

Bisher sind keine Verfahren zur Registrierung der Ge­ rinnsellyse von retrahierten Gerinnseln beschrieben worden.So far there are no procedures for registering the Ge  trickle lysis of retracted clots described been.

Der Erfindung liegt die Aufgabe zugrunde eine automa­ tische Registrierung der Gerinnsellyse von retrahier­ ten Gerinnseln zu ermöglichen.The invention has for its object an automa table registration of the retraier clot lysis to enable clots.

Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß retrahierte Gerinnsel in Gerinnungsröhrchen einem ly­ seaktivierenden Reagenz ausgesetzt werden und daß die entstehenden Spaltprodukte, intermittierend durch einen Magnetrührer aufgewirbelt, durch die Trübungszunahme im Reagenzien-Überstand photometrisch gemessen werden. Störungen durch das flottierende Gerinnsel werden da­ durch verhindert, daß die Messung immer in der Phase ohne Rührvorgang erfolgt. Das retrahierte Gerinnsel befindet sich dann stets am Röhrchengrund. Dagegen flottiert es während des Rührvorganges frei im Strah­ lengang und würde die photometrische Messung stören.The object is achieved in that retracted clots in coagulation tubes a ly exposed to the reactivating reagent and that the resulting fission products, intermittently by a Magnetic stirrers whirled up due to the increase in turbidity be measured photometrically in the reagent supernatant. Disruptions from the floating clot are there by preventing the measurement from always in phase done without stirring. The retracted clot is then always at the bottom of the tube. On the other hand floats freely in the jet during the stirring process lengang and would interfere with the photometric measurement.

Es hat sich als günstig erwiesen, die Messung der Ge­ rinnsellyse retrahierter Gerinnsel bei 37°C durchzu­ führen. Eine Anordnung nach Anspruch 3 schafft in die­ sem Sinne die Voraussetzungen zur Beheizung der Meß­ schächte.It has proven beneficial to measure the Ge trickle lysis retracted clot at 37 ° C to lead. An arrangement according to claim 3 creates in the sem meaning the requirements for heating the measuring pit.

Die mit der Erfindung erzielten Vorteile bestehen in der automatischen Registrierung und Verarbeitung der Meßwerte und in der im Vergleich zur manuellen Durch­ führung geringen Fehlerbreite.The advantages achieved by the invention are automatic registration and processing of Measured values and in comparison to manual through small margin of error.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher be­ schrieben. An embodiment of the invention is in the Drawing is shown and will be closer in the following wrote.  

Fig. A, Fig. B und Fig. C zeigen einen Vertikal­ schnitt durch eine erfindungsgemäße Meßschachtanord­ nung und deuten zusätzlich den Ablauf des Verfahrens an. Fig. A, Fig. B and Fig. C show a vertical section through a measurement shaft arrangement according to the invention and additionally indicate the course of the method.

An einem heizbaren (5) Meßschachttrakt (2) sind ein Photometer, bestehend aus Lichtquelle (3) und Licht­ sensor (8) und ein basaler Rührerantrieb, bestehend aus einem motorgetriebenen (7) Magneten (6) ange­ bracht. Zwischen der Meßschachtbasis und der Photome­ terebene muß ein Mindestabstand eingehalten werden, so daß der Strahlengang des Photometers immer deutlich über das Gerinnsel hinwegführt. Weiter muß ein inter­ mittierender Rührerbereich gewährleistet sein, um Stö­ rungen durch ein flottierendes Gerinnsel zu verhin­ dern. Die Transmissionsmessung erfolgt immer in der Phase ohne Rührvorgang, in der das Gerinnsel am Röhr­ chengrund liegt.On a heatable ( 5 ) measuring shaft tract ( 2 ), a photometer consisting of light source ( 3 ) and light sensor ( 8 ) and a basic stirrer drive, consisting of a motor-driven ( 7 ) magnet ( 6 ) is introduced. A minimum distance must be maintained between the measuring shaft base and the photometer level, so that the beam path of the photometer always leads clearly over the clot. Furthermore, an intermittent stirrer area must be ensured in order to prevent faults caused by a floating clot. The transmission measurement is always carried out in the phase without stirring, in which the clot lies on the base of the tube.

In Fig. A befindet sich ein Gerinnsel (4) in einem Ge­ rinnungsröhrchen (1), welches lyseaktivierendes Rea­ genz und ein Rührstäbchen (9) enthält. Das Rührstäb­ chen wird intermittierend durch den Rührerantrieb in Bewegung versetzt. Dadurch wird das Gerinnsel und auch die entstehenden Spaltprodukte aufgewirbelt. In der Phase ohne Rührvorgang sinkt das Gerinnsel wieder zu Boden, während die Spaltprodukte in Strahlengang ver­ bleiben und photometrisch gemessen werden können.In Fig. A there is a clot ( 4 ) in a Ge coagulation tube ( 1 ) which contains lysis activating reagent and a stir bar ( 9 ). The stir bar is set in motion intermittently by the stirrer drive. This causes the clot and the resulting fission products to be whirled up. In the phase without stirring, the clot sinks back to the bottom, while the fission products remain in the beam path and can be measured photometrically.

In Fig. B ist die beginnende Gerinnsellyse darge­ stellt. Durch den Lysevorgang verkleinert sich das Ge­ rinnsel und die entstehenden Spaltprodukte führen zur Trübungszunahme in Überstand.In Fig. B, the beginning of clot lysis is shown. The lysis process reduces the clot and the resulting fission products lead to an increase in the turbidity in the supernatant.

In Fig. C ist der Lysevorgang vollendet. Das Gerinnsel hat sich unter der Wirkung des Lyseaktivators voll­ ständig aufgelöst und die entstandenen Spaltprodukte bedingen eine maximale Transmissionszunahme in Über­ stand.In Fig. C the lysis process is completed. The clot has completely dissolved under the action of the lysis activator and the resulting cleavage products require a maximum increase in transmission.

Claims (3)

1. Verfahren zur Registrierung der Gerinnsellyse von retrahierten Gerinnseln, dadurch gekennzeichnet, daß retrahierte Gerinnsel in temperierten Gerinnungsröhrchen mit lyseaktivierenden Reagenzien überschichtet werden und daß die entstehen­ den Spaltprodukte, intermittierend über ein Magnetrüh­ rersystem aufgewirbelt, durch die Zunahme der Licht­ transmission im Überstand photometrisch in einer ge­ eigneten Meßvorrichtung gemessen werden.1. A method for registering the clot lysis of retracted clots, characterized in that retracted clots are overlaid in temperature-controlled coagulation tubes with lysis-activating reagents and that the resulting cleavage products are whirled up intermittently via a magnetic stirrer system, by the increase in light transmission in the supernatant photometrically in one suitable measuring device can be measured. 2. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, gekennzeichnet durch einen Meßschachttrakt (2), der zur Aufnahme von Gerinnungsröhrchen (1) dient, und in den ein Photometer (3, 8) und ein basaler Rührerantrieb (6, 7) integriert sind, wobei zwischen Meßschachtbasis und Photometerebene ein Mindestabstand eingehalten werden muß, und wobei ein intermittierender Rühreran­ trieb gewährleistet sein muß, um Störungen durch flot­ tierende Gerinnsel zu vermeiden.2. Device for performing the method according to claim 1, characterized by a measuring shaft tract ( 2 ) which serves to hold coagulation tubes ( 1 ), and in which a photometer ( 3, 8 ) and a basic stirrer drive ( 6, 7 ) are integrated , with a minimum distance between the measuring shaft base and the photometer level must be maintained, and an intermittent stirrer drive must be guaranteed to avoid interference from floating clots. 3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß in das Meßschacht-System als Grundlage zu einer geregelten Beheizung Heizele­ mente (5) integriert sind.3. Apparatus according to claim 1, characterized in that in the measuring shaft system as a basis for controlled heating Heizele elements ( 5 ) are integrated.
DE19893933583 1989-10-07 1989-10-07 Recording component of treated coagulant automatically - using measurement shaft with integral photometer, agitator drive and controlled heating element Withdrawn DE3933583A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19893933583 DE3933583A1 (en) 1989-10-07 1989-10-07 Recording component of treated coagulant automatically - using measurement shaft with integral photometer, agitator drive and controlled heating element
DE19904003008 DE4003008A1 (en) 1989-10-07 1990-02-02 Clotting-lysis registration method - using heatable tube section with photometer and motor driven stirrer and special coagulation tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19893933583 DE3933583A1 (en) 1989-10-07 1989-10-07 Recording component of treated coagulant automatically - using measurement shaft with integral photometer, agitator drive and controlled heating element

Publications (1)

Publication Number Publication Date
DE3933583A1 true DE3933583A1 (en) 1990-02-08

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3605010A (en) * 1969-07-14 1971-09-14 Becton Dickinson Co Automatic lysis detection apparatus
US3754866A (en) * 1971-07-30 1973-08-28 Sherwood Medical Ind Inc Optical detecting system
US3919414A (en) * 1973-08-29 1975-11-11 Abbott Lab Accelerating the lysis of blood clots
US4148216A (en) * 1978-01-18 1979-04-10 Do Mau T Apparatus for determining the viscous behavior of a liquid during coagulation thereof
SU824053A1 (en) * 1979-07-22 1981-04-23 Всесоюзный Кардиологический Научныйцентр Академии Медицинских Наук Cccp Method of measuring fibrin blob lysis rate

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3605010A (en) * 1969-07-14 1971-09-14 Becton Dickinson Co Automatic lysis detection apparatus
US3754866A (en) * 1971-07-30 1973-08-28 Sherwood Medical Ind Inc Optical detecting system
US3919414A (en) * 1973-08-29 1975-11-11 Abbott Lab Accelerating the lysis of blood clots
US4148216A (en) * 1978-01-18 1979-04-10 Do Mau T Apparatus for determining the viscous behavior of a liquid during coagulation thereof
SU824053A1 (en) * 1979-07-22 1981-04-23 Всесоюзный Кардиологический Научныйцентр Академии Медицинских Наук Cccp Method of measuring fibrin blob lysis rate

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