WO2002002049A1 - Apparatus for mixing a fluid medium - Google Patents

Apparatus for mixing a fluid medium 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
French (fr)
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/en

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.

Abstract

Blood is stored in a container (3) having a connection tube (2), blood being present in the container (3) as well as in the tube (2). Blood must be tested at prescribed times and the blood in the container (3) and in the tube (2) must then have been thoroughly mixed with each other, which means that the blood in the tube must be introduced into the container (3) and thoroughly mixed with the blood therein and thereafter the mixed blood is introduced into the tube, test samples being taken from the blood in the tube. The blood is the tube (2) has hitherto been conveyed to the container (3) completely manually. By means of the invention, a mechanical apparatus has been created that transports the blood to and from the container (3).

Description

APPARATUS FOR MIXING A FLUID MEDIUM
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. When this has been done, the blood has to be re-introduced into the tube. Hitherto, 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. When such blood bags are used, 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. Further characteristics of the present invention are disclosed in the claims set out below.
An embodiment of the present invention will be described with reference to the two accompanying drawings, in which
Figure 1 show a complete apparatus in accordance with the invention and
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. Thereafter, 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. As the blood bag 3 is suspended from the holder 7, 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. It should be evident, however, that 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.
It should be evident that the present apparatus, which is intended to enable control of superior mixed blood, can also be used for other mediums that require mixing and require control.

Claims

1. An apparatus for mixing a fluid medium, such as blood, located in a closed container (3 and 4, respectively), such as a rectangular blood bag, which container (3 and 4, respectively) is provided with a tube (2) containing said medium, characterized in that it has a holder member (5) that is constructed in such a way that the container (3 and 4, respectively) with its contents can be subjected to motion of such a kind that the medium is stirred and in that it has a device (1 ) for bringing the medium in the tube (5) back to the container (3) and for allowing the medium to flow back into the tube (3).
2. An apparatus as claimed in claim 1, characterized in that the device (1 ) is constructed in such a way that the tube can be evacuated and filled a number of times.
3. An apparatus as claimed in claim 2, characterized in that the tube (2) is drawn into the device (1) and expelled from the same.
4. An apparatus as claimed in claim 3, characterized in that the tube (2) is compressed between the envelope surfaces of two wheels (8 and 9), such as a feeder wheel (8) and a counter wheel (9).
5. An apparatus as claimed in any one or several of the preceding claims, characterized in that the device (1) has indicator means (10 and 13) to sense the ends of the tube and thereby control the movements back and forth of the tube (2).
6. An apparatus as claimed in claim 1, characterized in that the holder member (5) consists of a fixing unit for a container (3) that is carried in such a way and connected to a drive mechanism of such a kind that the unit can impart different movements to the container (3) as desired.
7. An apparatus as claimed in claim 1 where the container consists of a bag with a tube at one end and a suspension eyelet at the other end, characterized in that the holder member (5) consists of a stand with a member for cooperating with the eyelet of the bag (3).
PCT/SE2001/001480 2000-07-05 2001-06-28 Apparatus for mixing a fluid medium WO2002002049A1 (en)

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 (en) 2000-07-05 2000-07-05 Apparatus for mixing a liquid medium
SE0002553-6 2000-07-05

Publications (1)

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

Family

ID=20280394

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2001/001480 WO2002002049A1 (en) 2000-07-05 2001-06-28 Apparatus for mixing a fluid medium

Country Status (3)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004028591A1 (en) * 2002-09-25 2004-04-08 Noble House Group Pty Ltd Means for compressing tubes and the like

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 (en) * 1993-05-31 1994-12-08 Migada, Inc. Mixing device and clamps useful therein
FR2785178A1 (en) * 1998-11-04 2000-05-05 Aguettant Lab Reconstitution system for powdered or liquid medication in bottle and liquid solvent from pouch has graduated scale on bottle and spaces above and below it

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 (en) * 1993-05-31 1994-12-08 Migada, Inc. Mixing device and clamps useful therein
FR2785178A1 (en) * 1998-11-04 2000-05-05 Aguettant Lab Reconstitution system for powdered or liquid medication in bottle and liquid solvent from pouch has graduated scale on bottle and spaces above and below it

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004028591A1 (en) * 2002-09-25 2004-04-08 Noble House Group Pty Ltd Means for compressing tubes and the like

Also Published As

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

Similar Documents

Publication Publication Date Title
US4274453A (en) Aseptic fluid transfer
US8012432B2 (en) Disposable apparatus for use in blood testing
DE4409842C2 (en) Procedure for obtaining a blood sample from the umbilical cord of a newborn child
US20030031085A1 (en) Method for agitating a fluid suspension
CN110171597B (en) Method and machine for producing sterile solution product bags
JPS61501170A (en) particle analyzer
KR880012983A (en) Powder type dye automatic weighing device
AU2769200A (en) Arrangement to decant blood
US11851222B2 (en) Method and system for producing sterile solution product bags
NO940217L (en) Procedure for filling large bags, and equipment therefor
CN112504803A (en) Sampling tube blood anticoagulation equipment for medical examination
CN108982886A (en) Sample analyser sampling structure, sample analyser and the method for sampling
CN106645767A (en) Rotation disk type fecal occult blood detection analyzer
WO2002002049A1 (en) Apparatus for mixing a fluid medium
CN206404808U (en) A kind of new graduated pipette device
EP0346082A1 (en) Method and apparatus for low pressure liquid chromatography
JP3047149B2 (en) Dilution method and apparatus
US3655094A (en) Method and apparatus for measuring and proportioning fluids
US4015942A (en) Apparatus for delivering liquid and removing liquid from a container
CN209420359U (en) A kind of Stauntonia latifolia collector
CN209214982U (en) Sampler is used in a kind of detection of tea oil
US2544416A (en) Ampoule filling machine
CN207434335U (en) A kind of test tube doffer
CN218725582U (en) Sampling device for selective examination of special medical fluid food
JP7469755B2 (en) Pressurizing Device

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 69(1)EPC DATED 03/04/03

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP