WO2007122732A1 - 被分注液の分注機構、分注装置及び分注方法 - Google Patents
被分注液の分注機構、分注装置及び分注方法 Download PDFInfo
- Publication number
- WO2007122732A1 WO2007122732A1 PCT/JP2006/308562 JP2006308562W WO2007122732A1 WO 2007122732 A1 WO2007122732 A1 WO 2007122732A1 JP 2006308562 W JP2006308562 W JP 2006308562W WO 2007122732 A1 WO2007122732 A1 WO 2007122732A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liquid
- dispensed
- pipette
- measurement
- solution
- 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.)
- Ceased
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
- B01L3/02—Burettes; Pipettes
- B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/06—Fluid handling related problems
- B01L2200/0647—Handling flowable solids, e.g. microscopic beads, cells, particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/06—Fluid handling related problems
- B01L2200/0673—Handling of plugs of fluid surrounded by immiscible fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0832—Geometry, shape and general structure cylindrical, tube shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/04—Moving fluids with specific forces or mechanical means
- B01L2400/0475—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure
- B01L2400/0487—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure fluid pressure, pneumatics
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N2035/1027—General features of the devices
- G01N2035/1034—Transferring microquantities of liquid
- G01N2035/1039—Micropipettes, e.g. microcapillary tubes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1009—Characterised by arrangements for controlling the aspiration or dispense of liquids
- G01N35/1016—Control of the volume dispensed or introduced
Definitions
- Dispensing mechanism for dispensing liquid, dispensing device, and dispensing method
- the present invention relates to a dispensing mechanism, a dispensing apparatus, and a dispensing method for a liquid to be dispensed such as a sample and a test solution used in an automatic analyzer, and more specifically, included in the liquid to be dispensed.
- the present invention relates to a dispensing mechanism, a dispensing apparatus, and a dispensing method for a liquid to be dispensed, which can suck and discharge microspheres such as erythrocytes and liposomes without fear of bursting.
- a sample dispensing pipette (probe) is used to dispense a sample into a cell as well as a sample tube force.
- this pipette is filled with a liquid (prime water) such as pure water, for example.
- a liquid such as pure water, for example.
- red blood cells such as whole blood
- the prime water adheres to the inner wall of the pipette when the sample is collected by the pipette.
- red blood cells may be destroyed and hemolysis may occur. For this reason, there is a problem that the measurement may be disturbed (for example, a measurement error occurs).
- hemolysis for example, substances contained in red blood cells (GOT, LDH, acid phosphatase, alkaline phosphatase, cholesterol, iron, protein, etc.) and colored substances such as hemoglobin adversely affect the measurement.
- a cleaning liquid adheres to the outer wall of the pipette during pipette cleaning, and the adhering cleaning liquid may adversely affect the sample, and it has been desired to solve this problem.
- the present invention has been made paying attention to such points, and when, for example, a pipette is used to aspirate and discharge a liquid to be dispensed such as a sample or a test liquid, for example, red blood cells or ribosomes in the liquid to be dispensed It is an object to provide a dispensing mechanism, a dispensing apparatus, and a dispensing method for a liquid to be dispensed.
- the dispensing mechanism of the present invention that meets the above object has a property that the liquid to be dispensed includes a microsphere, and the spherical body can be destroyed when it comes into contact with a liquid having an osmotic pressure different from that of the liquid in the sphere. It is a spherical body, and it does not destroy the spherical body in the liquid to be dispensed, does not adversely affect the measurement, does not adversely affect the measurement. It has a function of sequentially sucking the solution, the gas, and the liquid to be dispensed, and discharging the sucked liquid to be dispensed into the container.
- the liquid is prime water (pure water), and a mechanism having a function of washing the inside with the liquid after discharge (claim 2).
- the dispensed liquid is preferably whole blood because it is frequently used (Claim 3).
- the solution is preferably physiological saline because it is inexpensive.
- the liquid to be dispensed includes a microsphere, and the sphere is a sphere having a property that can be broken when it comes into contact with a liquid having an osmotic pressure different from that of the liquid in the sphere.
- the sphere is a sphere having a property that can be broken when it comes into contact with a liquid having an osmotic pressure different from that of the liquid in the sphere.
- the liquid to be dispensed includes a microsphere, and the sphere is a sphere having a property that can be broken when it comes into contact with a liquid having an osmotic pressure different from that of the liquid in the sphere.
- the gas that does not adversely affect the measurement Do not destroy the spherical body! ⁇ Show osmotic pressure and do not adversely affect the measurement! Suction solution, gas, and liquid to be dispensed in sequence, and dispensed liquid to be dispensed into container (Claim 6).
- the inner wall of the pipette that comes into contact with the liquid to be dispensed destroys the spherical body in the liquid to be dispensed. Since it is coated with a soot solution that does not adversely affect the measurement and shows an osmotic pressure, even if the liquid to be dispensed comes into contact with the inner wall, microspheres such as erythrocytes and ribosomes in the liquid to be dispensed Since the body is not destroyed, the measurement accuracy is remarkably improved.
- FIG. 1 is a schematic side view showing an embodiment of the present invention.
- FIG. 1 is a schematic view showing an embodiment of the present invention.
- a pipette 2 probe
- prime water 1 air 3, physiological saline 4, air ⁇ and liquid to be dispensed are shown.
- the whole blood 5 is aspirated sequentially.
- the pipette 2 is depressurized or pressurized from the narrow tube 6 connected to the upper end.
- the liquid to be dispensed is aspirated and discharged.
- the physiological saline 4 is via the air 3 or ⁇ and is not in direct contact with the prime water 1 or the whole blood 5, so that the salt concentration can be kept almost constant from the suction to the state shown in FIG. it can .
- This concentration is a concentration that does not destroy erythrocytes in whole blood, which is the liquid to be dispensed.
- sucking physiological saline into the pipette the inner wall of the pipette and the prime water remaining on the inner wall of the pipette are replaced with a saline solution having a concentration that does not destroy erythrocytes.
- red blood cells come into contact with this, there is no risk of some red blood cells bursting!
- prime water pure water
- the microspheres in the liquid to be dispensed may be destroyed.
- the prime water that has adsorbed and remained on the inner wall of the pipette is drawn in order to suck a solution that shows an osmotic pressure that does not destroy the spherical body and does not adversely affect the measurement before sucking the liquid to be dispensed.
- the cleaning liquid adhering to the outer wall of the pipette may burst a part of the spherical body in the liquid to be dispensed.
- the liquid to be dispensed (whole blood) is discharged into the separation cell (container).
- Prime water pure water
- the whole blood which is the liquid to be dispensed
- the measurement can be carried out by the following operation. That is, whole blood 5 aspirated as described above is dispensed into a separation cell, and then the plasma obtained by centrifugation is transferred to a reaction cell, and a reagent is added to this to react. Can be measured.
- ⁇ Solution '' refers to a solution exhibiting an osmotic pressure as described above, i.e., a solution exhibiting an osmotic pressure higher than the osmotic pressure that normally bursts a sphere, preferably the same osmotic pressure as a liquid in a spheroid.
- a solution an isotonic solution or a solution in the vicinity of isotonicity that contains a component that adversely affects measurement, and is a solution.
- physiological saline was used.
- the spherical body in the liquid to be dispensed was not destroyed, the osmotic pressure was not shown, and the measurement was not adversely affected! / ⁇
- the osmotic pressure does not destroy the spheroids in the sample!
- the osmotic pressure is higher than the osmotic pressure that bursts (destroys) the spheroids in the liquid to be dispensed.
- the osmotic pressure preferably the same osmotic pressure as that of the liquid in the spherical body (the osmotic pressure in the vicinity of the isotonic solution or the isotonic solution).
- Such osmotic pressure cannot be generally specified depending on the type of spherical body and the type of liquid in the spherical body, but more specifically, for example, when the spherical body is an erythrocyte, the lower limit is usually 1 Higher than 70 mOsm / L, preferably 200 mOsm / L or more, more preferably 239 mOsm / L or more, more preferably 250 mOsm / L or more, particularly preferably 290 mOsm / L, and the upper limit is usually 1026 mOsm / L or less, preferably Is 800 mOsm / L or less, more preferably 500 mOsm / L or less, further preferably 341 mOsm / L or less, particularly preferably 324 mOsm / L or less.
- the osmotic pressure when the spherical body is a ribosome may be appropriately selected according to the type of membrane component to be constructed, the osmotic pressure indicated by the encapsulated solution, etc.
- the osmotic pressure is similar to that of saline, the same range as that of the above-described erythrocytes is preferable.
- any solution having an ionic strength exhibiting osmotic pressure as described above may be used as long as it does not adversely affect the measurement.
- an aqueous solution of a predetermined concentration such as an alkali metal (Na, K, Li, etc.), Mg, Ca, ammonium, etc. (eg, F, Cl, Br, I, etc.), eg, a predetermined concentration Of sulfuric acid, phosphoric acid, carboxylic acid (such as oxalic acid, acetic acid, succinic acid, lactic acid, tartaric acid, citrate, etc.) (for example, alkali metal salts such as Na, K, Li, ammonium salts, etc.) Examples include aqueous solutions that do not adversely affect the measurement.
- a predetermined concentration such as an alkali metal (Na, K, Li, etc.), Mg, Ca, ammonium, etc. (eg, F, Cl, Br, I, etc.), eg, a predetermined concentration Of sulfuric acid, phosphoric acid, carboxylic acid (such as oxalic acid, acetic acid, succinic acid, lactic acid
- does not adversely affect the measurement means “contains components that adversely affect the measurement. It is the same meaning as “not”, and a solution that does not affect the target measurement may be appropriately selected from the above solutions in consideration of the measurement object, the measurement principle, and the like.
- ammonia, Mg, etc. may affect the measurement of urea nitrogen in the sample, so it should be used in measurements other than urea nitrogen.
- lactate and oxalate may affect the measurement of LDH, GPT, etc.
- Force Mg, Ca, etc. may affect the measurement of Mg, Ca, and phosphate may affect the measurement of inorganic phosphorus. Therefore, use it for measurements other than these.
- precipitation of Ca and Mg salts may occur depending on the concentration used.
- a NaCl aqueous solution a NaCl aqueous solution, a KC1 aqueous solution, a sodium sulfate aqueous solution, a potassium sulfate aqueous solution and the like are preferable, and a NaCl aqueous solution (physiological saline) is particularly preferable.
- the concentration of the aqueous solution as described above is not particularly limited as long as it is set so as to exhibit the osmotic pressure as described above. Such a concentration cannot be generally stated depending on the type of solution used, the type of spherical body, the type of liquid in the spherical body, etc. More specifically, for example, a NaCl aqueous solution (saline) is used as the solution.
- the lower limit of the NaCl concentration is usually higher than 0.5% (w / v), preferably 0.59% (w / v) or more, more preferably Is 0.7% (w / v) or more, more preferably 0.73% (w / v) or more, particularly preferably 0.85% (w / v), and the upper limit is usually 3% (w / v) or less, preferably It is 2.35% (w / v) or less, more preferably 1.47% (w / v) or less, further preferably 1% (w / v) or less, and particularly preferably 0.95% (w / v) or less.
- the vicinity of 0.88% (w / v) is particularly preferable.
- the NaCl concentration in the case of a spherical force S ribosome may be appropriately selected according to the type of membrane component to be constructed, the osmotic pressure indicated by the encapsulated solution, and the like!
- the solution contained in the sputum has an osmotic pressure comparable to that of the physiological saline, the same range as that of the above-described red blood cells is preferable.
- the force using whole blood as a liquid to be dispensed is a solution containing microspheres having a property that can be destroyed when contacted with a liquid having a different osmotic pressure from the liquid in the sphere.
- the liquid to be dispensed can be applied to the present invention.
- examples of such spheres include microspheres formed of a semipermeable membrane, such as microspheres (formed of biological membranes) such as erythrocytes, leukocytes, and platelets, and ribosomes. Examples thereof include microspheres formed of a synthetic film.
- the solution containing microspheres may be any one containing the spheres as described above.
- a body fluid containing spheres such as whole blood, and the spheres may be water, physiological saline, or the like.
- Water, buffers usually used in this field PBS buffer, phosphate buffer, borate buffer, Tris buffer, phosphate buffer, veronal buffer, borate buffer, Good buffer, etc.
- a solution obtained by diluting or suspending with a solution such as
- a property that can be destroyed when contacted with a liquid having an osmotic pressure different from that of the liquid in the spherical body means that a liquid having a osmotic pressure different from that of the liquid in the spherical body and the spherical body are in contact with each other. This means that the membrane structure forming the spherical body is destroyed by the difference in osmotic pressure, and the components in the spherical body flow out of the spherical body.
- ribosomes that are usually used in this field can be used.
- natural lecithin such as egg yolk lecithin, such as distearoylphosphatidylcholine, dimyristoylphosphatidylglycerol (DMPG), egg yolk phosphatidyl.
- a phospholipid such as glycerol, for example, a glycolipid such as toy lyoside glycolipid, a mixed system of these with cholesterol, or a combination of these with lipopolysaccharide etc. .liposome Res., 2), 339-377 (1989-90), Clin. Chem. 4lZ .58 6-590 (1995), etc.].
- an enzyme, a coenzyme, an enzyme substrate, a dye, a fluorescent substance, a luminescent substance are prepared by a known preparation method (JP-A-7-110331, JP-A-7-140147, etc.). Substances, saccharides, ionic compounds, chelate indicators, dyes, spin label compounds, etc. may be included.
- any gas other than air may be used as long as it does not adversely affect the measurement of the force sucked so that the physiological saline is held between the air.
- nitrogen may be used.
- al An inert gas such as gon or helium can also be used.
- the inside of the pipette is, for example, an inert and insulating oil such as distilled water or pure water, such as silicon oil. Filled with liquid (prime water).
- the force using a pipette with a liquid level sensor as a pipette is to detect a liquid level by detecting a change in capacitance, so that the liquid 1 contains a liquid that does not contain an electrolyte.
- the liquid level cannot be detected by capacitance.
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- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/298,072 US8030093B2 (en) | 2006-04-24 | 2006-04-24 | Dispensing mechanism, dispensing apparatus and dispensing method for liquid to be dispensed |
| EP06756323.9A EP2012129A4 (en) | 2006-04-24 | 2006-04-24 | DISTRIBUTION MECHANISM, DEVICE AND METHOD FOR A LIQUID TO BE DISPENSED |
| PCT/JP2006/308562 WO2007122732A1 (ja) | 2006-04-24 | 2006-04-24 | 被分注液の分注機構、分注装置及び分注方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2006/308562 WO2007122732A1 (ja) | 2006-04-24 | 2006-04-24 | 被分注液の分注機構、分注装置及び分注方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007122732A1 true WO2007122732A1 (ja) | 2007-11-01 |
Family
ID=38624660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2006/308562 Ceased WO2007122732A1 (ja) | 2006-04-24 | 2006-04-24 | 被分注液の分注機構、分注装置及び分注方法 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US8030093B2 (ja) |
| EP (1) | EP2012129A4 (ja) |
| WO (1) | WO2007122732A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017067484A (ja) * | 2015-09-28 | 2017-04-06 | 株式会社島津製作所 | 液体分注装置及び液体分注方法 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5471846B2 (ja) * | 2010-05-31 | 2014-04-16 | 株式会社島津製作所 | 液体試料導入装置及び液体試料導入方法 |
| EP3081942A1 (en) * | 2015-04-17 | 2016-10-19 | Roche Diagniostics GmbH | Pressure transmission liquid for cellular analyzer, cellular analyzer and method for analyzing a liquid cellular sample |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5742856A (en) * | 1980-08-27 | 1982-03-10 | Toshiba Corp | Absorbing and desorbing method for automatic chemical analytical apparatus |
| JPS62228952A (ja) * | 1986-03-31 | 1987-10-07 | Toshiba Corp | 自動化学分析装置における吸引吐出方法 |
| JPH04329363A (ja) * | 1991-05-02 | 1992-11-18 | Olympus Optical Co Ltd | 分注方法 |
| JPH07110331A (ja) | 1993-09-07 | 1995-04-25 | Wako Pure Chem Ind Ltd | ヒト補体価測定方法及びヒト補体価測定用試薬組成物 |
| JPH07140147A (ja) | 1993-11-17 | 1995-06-02 | Wako Pure Chem Ind Ltd | 補体価測定方法及びこれに用いる試薬 |
| JP2003149093A (ja) * | 2001-11-15 | 2003-05-21 | Olympus Optical Co Ltd | 液体分注装置および液体分注方法 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5312757A (en) * | 1991-05-02 | 1994-05-17 | Olympus Optical Co., Ltd. | Sample distributing method |
| DE69426223T2 (de) | 1993-09-07 | 2001-05-23 | Wako Pure Chemical Industries, Ltd. | Verfahren und Reagenz zur Messung der Komplementaktivität |
| WO2002073203A1 (fr) * | 2001-03-09 | 2002-09-19 | Mitsubishi Kagaku Iatron, Inc. | Procede de mesure de sang entier |
| US6734424B2 (en) * | 2002-05-16 | 2004-05-11 | Large Scale Proteomics Corporation | Method for microdispensing of fluids from a pipette |
| JP4329363B2 (ja) | 2003-02-28 | 2009-09-09 | オイレス工業株式会社 | スラスト滑り軸受を用いたストラット型サスペンションの取付構造及びそのスラスト滑り軸受 |
-
2006
- 2006-04-24 WO PCT/JP2006/308562 patent/WO2007122732A1/ja not_active Ceased
- 2006-04-24 US US12/298,072 patent/US8030093B2/en not_active Expired - Fee Related
- 2006-04-24 EP EP06756323.9A patent/EP2012129A4/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5742856A (en) * | 1980-08-27 | 1982-03-10 | Toshiba Corp | Absorbing and desorbing method for automatic chemical analytical apparatus |
| JPS62228952A (ja) * | 1986-03-31 | 1987-10-07 | Toshiba Corp | 自動化学分析装置における吸引吐出方法 |
| JPH04329363A (ja) * | 1991-05-02 | 1992-11-18 | Olympus Optical Co Ltd | 分注方法 |
| JPH07110331A (ja) | 1993-09-07 | 1995-04-25 | Wako Pure Chem Ind Ltd | ヒト補体価測定方法及びヒト補体価測定用試薬組成物 |
| JPH07140147A (ja) | 1993-11-17 | 1995-06-02 | Wako Pure Chem Ind Ltd | 補体価測定方法及びこれに用いる試薬 |
| JP2003149093A (ja) * | 2001-11-15 | 2003-05-21 | Olympus Optical Co Ltd | 液体分注装置および液体分注方法 |
Non-Patent Citations (3)
| Title |
|---|
| CLIN. CHEM., vol. 41/4, 1995, pages 586 - 590 |
| J. LIPOSOME RES., vol. 1, no. 3, 1989, pages 339 - 377 |
| See also references of EP2012129A4 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017067484A (ja) * | 2015-09-28 | 2017-04-06 | 株式会社島津製作所 | 液体分注装置及び液体分注方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2012129A4 (en) | 2013-12-04 |
| US8030093B2 (en) | 2011-10-04 |
| US20090098024A1 (en) | 2009-04-16 |
| EP2012129A1 (en) | 2009-01-07 |
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