WO2002002049A1 - Appareil permettant de mélanger un milieu liquide - Google Patents

Appareil permettant de mélanger un milieu liquide Download PDF

Info

Publication number
WO2002002049A1
WO2002002049A1 PCT/SE2001/001480 SE0101480W WO0202049A1 WO 2002002049 A1 WO2002002049 A1 WO 2002002049A1 SE 0101480 W SE0101480 W SE 0101480W WO 0202049 A1 WO0202049 A1 WO 0202049A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
container
blood
medium
bag
Prior art date
Application number
PCT/SE2001/001480
Other languages
English (en)
Inventor
Per Hvass
Original Assignee
Fält Medical Ab
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 Fält Medical Ab filed Critical Fält Medical Ab
Priority to AU2001266524A priority Critical patent/AU2001266524A1/en
Publication of WO2002002049A1 publication Critical patent/WO2002002049A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
    • B01L3/505—Containers for the purpose of retaining a material to be analysed, e.g. test tubes flexible containers not provided for above
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
    • B01F31/20—Mixing the contents of independent containers, e.g. test tubes
    • B01F31/201—Holders therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
    • B01F31/55—Mixers with shaking, oscillating, or vibrating mechanisms the materials to be mixed being contained in a flexible bag submitted to periodical deformation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/483—Physical analysis of biological material
    • G01N33/487—Physical analysis of biological material of liquid biological material
    • G01N33/49—Blood

Definitions

  • Containers for a fluid medium already exist that have a suspension member at one end and a tube at the other end. When such a container is filled, the tube is also filled.
  • Such units of container and tube can require certain tests of the medium contained and, for the test to be satisfactory, the medium in the tube must be introduced into the container and be very thoroughly mixed there before it can be re- introduced into the tube so that a sample that is suitable for testing can be extracted from the tube.
  • Such a container arrangement is particularly suitable for blood and, for blood to be usable, it must be regularly tested.
  • the blood is commonly contained in bags that have a suspension device at one end and a connection tube at their other end. When it becomes necessary, before a test, the blood contained in the tube is added to the blood contained in the container and is mixed very thoroughly there.
  • the blood has to be re-introduced into the tube.
  • the blood from the tube has been conveyed to the container by a nurse using a pair of roller forceps to press all the blood out of the tube and into the container. This is a strenuous and cumbersome procedure.
  • the object of the present invention is to relieve a nurse who is preparing for a test of blood by creating an apparatus where the blood in the tube is pressed back into the container, with the aid of the apparatus, and then thoroughly mixed there, whereupon the blood can be re-introduced into the tube.
  • the apparatus in accordance with the invention has a fixing member for the container that is so designed that it can impart different movements to the container. Further, the apparatus has a unit that is capable of compressing the tube so that the blood in the tube is conveyed back to the actual container. Thereafter, the container is subjected to movements so that thorough mixing is obtained. When this is done, the blood is re-introduced into the tube. The evacuation and filling of the tube can be performed a number of times, as required.
  • Customary blood bags are provided with an eyelet atone end and a tube at the other end.
  • the blood bag can be suspended from a stand and the stand thereby constitutes the suspension member.
  • the tube is introduced into a unit that draws the tube towards itself, thereby evacuating its contents into the container, and thereafter moves the tube back so that the same can be filled with blood again. These movements can be repeated.
  • the unit has indicator members that sense both ends of the tube so that the unit is able to evacuate a tube completely.
  • FIG. 1 show a complete apparatus in accordance with the invention
  • Figure 2 shows the unit for evacuating and filling the tube.
  • Figure 1 shows a tube-evacuating unit, placed on a shelf, more particularly at one end of said shelf.
  • a holder member in this case in the shape of a stand 5, is arranged at the other end of the shelf.
  • the apparatus is intended to be utilized for bags of a rectangular shape that are provided with a tube at one end and a suspension eyelet at their other end, this eyelet being attached to an attachment point 7 on the stand.
  • the tube is introduced into an opening in the tube-evacuating unit.
  • the tube-evacuating unit comprises a feeder wheel 8 that co-operates with a counter wheel 9.
  • the tube 2 is introduced into a lower tube passage 11 , having tubular character, so that the tube is passed between the envelope surfaces of the two wheels 8 and 9, and thereafter expelled through the upper tube passage.
  • a photocell is provided at each of the two tube passages to sense the ends of the tube. In this way, the blood can be completely evacuated from the tube.
  • the unit 1 has drive arrangements controlled by the photocells 10 and 13 so that movements back and forth are obtained.
  • the unit further has an adjustment device so that the unit can be adapted to different tube diameters.
  • the apparatus shown in Figure 1 operates in the following way.
  • a bag 3 is suspended from the attachment point 7 and the tube end is introduced into the opening of the unit 1.
  • the unit is started and it will then draw the tube towards itself until the blood has been evacuated from the lower end of the tube.
  • Drawing the tube of the bag subjects the bag to motion, mixing the quantities of blood from the container and the tube.
  • the movements of the tube, caused by the unit 1 will subject the container 3 to vigorous mixing movements. Obviously, an operator can impart additional movement to the container manually so that good mixing is provided.
  • a bag can be placed on a fixing member in one way or another such that the fixing member can impart desired motion to the bag so that fully satisfactory mixing takes place and, further, such that the end of the bag tube can be moved towards the tube-evacuating unit 1.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Hematology (AREA)
  • Clinical Laboratory Science (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)

Abstract

On stocke du sang dans un récipient (3) pourvu d'un tube de connexion (2), le sang se trouvant aussi bien dans le récipient (3) que dans le tube (2). Le sang doit être testé à des moments déterminés et le sang se trouvant dans le récipient (3) ainsi que celui se trouvant dans le tube (2) doivent avoir été intimement mélangés, ce qui signifie que le sang présent dans le tube doit être introduit dans le récipient (3) et intimement mélangé à celui-ci. Le sang mélangé est ensuite introduit dans le tube, des échantillons d'essai sont prélevés dans le tube. Jusqu'à présent, le sang présent dans le tube (2) était transféré dans le récipient par une opération entièrement réalisée à la main. Cette invention a trait à un appareil mécanique transportant le sang dans le récipient (3) et l'en extrayant.
PCT/SE2001/001480 2000-07-05 2001-06-28 Appareil permettant de mélanger un milieu liquide WO2002002049A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001266524A AU2001266524A1 (en) 2000-07-05 2001-06-28 Apparatus for mixing a fluid medium

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0002553A SE0002553L (sv) 2000-07-05 2000-07-05 Apparat för att blanda ett flytande medium
SE0002553-6 2000-07-05

Publications (1)

Publication Number Publication Date
WO2002002049A1 true WO2002002049A1 (fr) 2002-01-10

Family

ID=20280394

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2001/001480 WO2002002049A1 (fr) 2000-07-05 2001-06-28 Appareil permettant de mélanger un milieu liquide

Country Status (3)

Country Link
AU (1) AU2001266524A1 (fr)
SE (1) SE0002553L (fr)
WO (1) WO2002002049A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004028591A1 (fr) * 2002-09-25 2004-04-08 Noble House Group Pty Ltd Moyens de compression de tubes et analogues

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4606734A (en) * 1984-02-22 1986-08-19 Abbott Laboratories Container mixing system with externally mounted drug container
US4610684A (en) * 1984-06-22 1986-09-09 Abbott Laboratories Flexible container and mixing system for storing and preparing I.V. fluids
WO1994027715A1 (fr) * 1993-05-31 1994-12-08 Migada, Inc. Dispositif de melange et pinces utilisees avec celui-ci
FR2785178A1 (fr) * 1998-11-04 2000-05-05 Aguettant Lab Dispositif de reconstitution d'un medicament sous forme de poudre, de lyophilisat ou de liquide, conditionne dans un flacon, avec un solvant conditionne dans une poche souple

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4606734A (en) * 1984-02-22 1986-08-19 Abbott Laboratories Container mixing system with externally mounted drug container
US4610684A (en) * 1984-06-22 1986-09-09 Abbott Laboratories Flexible container and mixing system for storing and preparing I.V. fluids
WO1994027715A1 (fr) * 1993-05-31 1994-12-08 Migada, Inc. Dispositif de melange et pinces utilisees avec celui-ci
FR2785178A1 (fr) * 1998-11-04 2000-05-05 Aguettant Lab Dispositif de reconstitution d'un medicament sous forme de poudre, de lyophilisat ou de liquide, conditionne dans un flacon, avec un solvant conditionne dans une poche souple

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004028591A1 (fr) * 2002-09-25 2004-04-08 Noble House Group Pty Ltd Moyens de compression de tubes et analogues

Also Published As

Publication number Publication date
AU2001266524A1 (en) 2002-01-14
SE0002553D0 (sv) 2000-07-05
SE0002553L (sv) 2002-01-06

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