WO2007116083A1 - Verfahren zum dosieren und mischen - Google Patents
Verfahren zum dosieren und mischen Download PDFInfo
- Publication number
- WO2007116083A1 WO2007116083A1 PCT/EP2007/053525 EP2007053525W WO2007116083A1 WO 2007116083 A1 WO2007116083 A1 WO 2007116083A1 EP 2007053525 W EP2007053525 W EP 2007053525W WO 2007116083 A1 WO2007116083 A1 WO 2007116083A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- dispensing
- liquid
- sample vessel
- dispensing needle
- needle
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/40—Mixing liquids with liquids; Emulsifying
- B01F23/45—Mixing liquids with liquids; Emulsifying using flow mixing
- B01F23/451—Mixing liquids with liquids; Emulsifying using flow mixing by injecting one liquid into another
-
- 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
- B01F31/65—Mixers with shaking, oscillating, or vibrating mechanisms the materials to be mixed being directly submitted to a pulsating movement, e.g. by means of an oscillating piston or air column
-
- 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
- G01N2035/1048—General features of the devices using the transfer device for another function
- G01N2035/1058—General features of the devices using the transfer device for another function for mixing
- G01N2035/106—General features of the devices using the transfer device for another function for mixing by sucking and blowing
-
- 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
- G01N35/1011—Control of the position or alignment of the transfer device
Definitions
- the present invention relates to a method for automatically metering and mixing liquids in a sample vessel by means of a dispensing needle.
- JP 07239334 describes another method for mixing liquids, in which a small amount of a first sample solution is pipetted into the sample vessel and then a large amount of a diluting solution is added with another pipette. This method is only suitable if two liquids with very different volumes are to be mixed. Moreover, this method can not achieve a homogeneous mixture for every type of liquid.
- the present invention has the object to provide a method for automatic dosing and mixing of liquids available, which mixes the liquids as fast as possible and in a few steps particularly effective, which is easy to perform and inexpensive and no additional Component needed.
- This object is achieved by a method of the type mentioned above, which has the following steps: a) dispensing a volume of liquid or several volumes of several liquids from a dispensing needle into a sample vessel, wherein the dispensing of liquid or liquids from the dispensing needle begins when the dispensing opening of the dispensing needle is at a starting position (S), the dispensing is continued while the dispensing needle is moved in a vertical direction downwards towards an end position (E), and the dispensing ends when the dispensing opening of the dispensing needle at the end position ( E), wherein the starting position in the vertical direction at a distance from the bottom of the sample vessel, which corresponds to the maximum filling level of the sample vessel after complete liquid discharge in this stage, or above, or at most 10% below,
- steps a) to d) are repeated with one or more liquids.
- chemical reactions are due to the addition controlled by a particular substance.
- analytical reactions it is therefore necessary to mix this substance as quickly as possible with the other liquids in order to ensure a uniform reaction.
- a fast homogeneous mixture of all liquids can be achieved.
- Also preferred according to the invention is a process in which steps b) to d) are repeated one or more additional times.
- Some liquids may be pipetted very slowly due to their physical properties, such as viscosity, and may mix very poorly with other liquids, so it makes sense to repeat the steps of soaking and re-dispensing the liquid into the sample vessel.
- a homogeneous mixture is achieved even for liquids with high viscosities, highly different viscosities or very different densities.
- the starting position (S) in the vertical direction between 0.5% and 50%, preferably between 0.5% and 20%, based on the distance from the bottom of the sample vessel to the maximum filling height of Sample container after complete discharge of liquid in each stage, is above the maximum level after complete discharge of liquid in each stage.
- the starting position in which the dispensing needle is located at the beginning of the dispensing of the liquid should be above the filling level of the sample vessel after complete liquid discharge, since a plurality of successively added liquids or an already introduced liquid with the liquids that are already added through the Turbulence, which arise when the liquid encounters the liquid level, mix.
- the end position (E) in the vertical direction is at a distance of between 0.5% and 20%, preferably between 0.5% and 10%, particularly preferably between 0.5% and 5%, Based on the distance from the bottom of the sample vessel to the maximum filling level of the sample vessel after complete liquid discharge in the respective stage, located above the bottom of the sample vessel.
- the final position of the dispensing opening of the dispensing needle should be well below the maximum filling height of the sample vessel, so that the largest part of the discharge takes place below the liquid level and thus a mixing of the liquids is ensured in the vertical direction.
- step b) the dispensing needle is moved vertically upward until the dispensing opening is located above the liquid surface, then sucked a separating air bubble and then the dispensing needle is moved back to the end position (E).
- more liquid may be present in the dispensing needle than should be added.
- the addition is stopped when the desired volume has been dispensed from the dispensing needle into the sample cup.
- the dispensing needle thus remains a part of a liquid that should not be mixed with the liquids in the sample vessel.
- the rate at which the dispensing needle is moved into the sample vessel is proportional to the rate of delivery of the liquid or liquids.
- the start position (S) and the end position (E) simultaneously represent the start and end points of a movement as well as the start and end point of the delivery of the liquid. If the two speeds are proportional to each other, the calculation of the speeds is simplified.
- the speed at which the dispensing needle is moved into the sample vessel and / or the speed of dispensing the liquid or liquids from the dispensing needle is constant. Constant speeds, both the output and also the speed with which the dispensing needle is moved into the sample vessel, ensure a uniform distribution of the liquid particles. th are released, in particular, when the dispensing needle is below the liquid level. Incidentally, in automation, consistent speeds are also easier to realize.
- the rate of delivery of the liquid or liquids from the dispensing needle is between 0.1 and 2 ml / s, preferably between 0.2 and 1 ml / s.
- these are suitable delivery rates to achieve homogeneous mixing in as few steps as possible.
- Higher velocities can lead to liquid spewing and thus volume errors during liquid dispensing, which would not ensure uniform reaction conditions.
- Lower velocities would not provide sufficient turbulence upon discharge into the fluid, resulting in less good mixing and therefore requiring additional repetitions of steps b) through d), further slowing down the process.
- step b a process in which 50 to 100% by volume of the liquid volume present in the sample vessel, preferably 70 to 95% by volume, particularly preferably 90 to 95% by volume, are absorbed in step b). If less than 50% by volume of the liquid volume is absorbed, the number of mixing operations required increases until a homogeneous mixture is achieved. The absorption of more than 95 vol .-% is technically not useful, since the likelihood that it would be mitaufgesaugt air is very large and thus better mixing would not be guaranteed.
- the metering needle is used for tempering the liquids. Since a large liquid surface comes into contact with the dispensing needle during the aspiration and dispensing of liquids, it makes sense to heat the dispensing needle and thereby achieve rapid pre-tempering of the liquid. This also reduces the requirements for other technical device, which serves the tempering of the liquids, whereby the process is cheaper.
- a dispensing needle is used whose inner diameter at the discharge opening is less than 1 mm and preferably between 0.5 and 0.8 mm.
- a dispensing needle is used, the tip of which is substantially bevelled. In the discharge of liquids from a metering needle with beveled tip in already submitted liquids vortices are generated, which support the mixing effect of the process.
- a metering needle is used with a closed tip, in which there are a plurality of discharge openings laterally. By attaching side discharge openings, the liquid is discharged to the side and generates additional turbulence there. This also supports the mixing effect of the process.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biochemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Accessories For Mixers (AREA)
Abstract
Description
Claims
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/226,122 US8246239B2 (en) | 2006-04-11 | 2007-04-11 | Method of metering and mixing |
| EP07727993A EP2005196B1 (de) | 2006-04-11 | 2007-04-11 | Verfahren zum dosieren und mischen |
| AT07727993T ATE523789T1 (de) | 2006-04-11 | 2007-04-11 | Verfahren zum dosieren und mischen |
| CN2007800127532A CN101611322B (zh) | 2006-04-11 | 2007-04-11 | 定量与混合的方法 |
| JP2009504742A JP5055357B2 (ja) | 2006-04-11 | 2007-04-11 | 配量および混合方法 |
| HK10106216.3A HK1140259B (en) | 2006-04-11 | 2007-04-11 | Method for metering and mixing |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006017360.0 | 2006-04-11 | ||
| DE102006017360A DE102006017360A1 (de) | 2006-04-11 | 2006-04-11 | Verfahren zum Dosieren und Mischen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007116083A1 true WO2007116083A1 (de) | 2007-10-18 |
Family
ID=38222485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2007/053525 Ceased WO2007116083A1 (de) | 2006-04-11 | 2007-04-11 | Verfahren zum dosieren und mischen |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US8246239B2 (de) |
| EP (1) | EP2005196B1 (de) |
| JP (1) | JP5055357B2 (de) |
| CN (1) | CN101611322B (de) |
| AT (1) | ATE523789T1 (de) |
| DE (1) | DE102006017360A1 (de) |
| ES (1) | ES2372545T3 (de) |
| WO (1) | WO2007116083A1 (de) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002331326A (ja) | 2001-03-08 | 2002-11-19 | Nhk Spring Co Ltd | 中空スタビライザおよびその製造方法 |
| JP5284928B2 (ja) * | 2009-11-20 | 2013-09-11 | 株式会社日立ハイテクノロジーズ | 液体混合方法及び分注装置 |
| WO2013114220A2 (en) * | 2012-02-01 | 2013-08-08 | Novartis Ag | Biological sample collection device providing for mechanical sample homogenization using a sample aliquot unit |
| JP6580869B2 (ja) * | 2015-05-29 | 2019-09-25 | シスメックス株式会社 | 検体分析装置、搬送装置、及び方法 |
| JP6801656B2 (ja) * | 2015-07-07 | 2020-12-16 | コニカミノルタ株式会社 | 検出装置および検出方法 |
| ES2898649T3 (es) * | 2015-07-13 | 2022-03-08 | Siemens Healthcare Diagnostics Products Gmbh | Procedimiento para el pipeteo de líquidos en un aparato analizador automático |
| JP6755035B2 (ja) * | 2015-07-15 | 2020-09-16 | 国立大学法人 鹿児島大学 | 気泡生成装置及び気泡生成方法 |
| CN106474995B (zh) * | 2016-10-25 | 2019-09-06 | 迈克医疗电子有限公司 | 吸排液式混匀液体的方法 |
| LU100170B1 (de) * | 2017-04-13 | 2018-10-15 | Cytena Gmbh | Verfahren zum Prozessieren einer flüssigen Probe |
| JP7292195B2 (ja) * | 2019-12-06 | 2023-06-16 | 株式会社日立ハイテク | 自動分析装置 |
| EP3896460A1 (de) * | 2020-04-17 | 2021-10-20 | bioMérieux | Automatisches probenahmeverfahren zur handhabung von vollblut |
| WO2021223168A1 (zh) * | 2020-05-07 | 2021-11-11 | 深圳迈瑞生物医疗电子股份有限公司 | 样本分析仪、样本分析方法及计算机可读存储介质 |
| EP4737906A1 (de) * | 2023-06-30 | 2026-05-06 | Hitachi High-Tech Corporation | Flüssigkeitsrührverfahren für eine automatische analysevorrichtung und automatische analysevorrichtung zur ausführung davon |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3115568A1 (de) * | 1980-04-18 | 1982-04-15 | Beckman Instruments Inc., 92634 Fullerton, Calif. | Verfahren und vorrichtung zum mischen von fluessigkeiten unter verwendung einer automatisierten pipette |
| US5133392A (en) * | 1991-04-10 | 1992-07-28 | Eastman Kodak Company | Liquid injection using container bottom sensing |
| WO1993025309A1 (en) * | 1992-06-17 | 1993-12-23 | Niilo Kaartinen | Method for mixing a quantity of liquid in a container for an analysis, a mixing and measuring needle and method for manufacturing the needle |
| EP1138372A2 (de) * | 2000-03-27 | 2001-10-04 | ARKRAY, Inc. | Verfahren zum Rühren einer Flüssigkeit |
| EP1498736A1 (de) * | 2003-07-18 | 2005-01-19 | Ortho-Clinical Diagnostics, Inc. | Verfahren zum Mischen einer Flüssigkeit in einem Analysegerät |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2933293A (en) * | 1956-09-12 | 1960-04-19 | Technicon Instr | Method of intermixing a plurality of liquids of different specific gravities |
| US3831816A (en) * | 1973-06-29 | 1974-08-27 | R Pauliukonis | Chemical syringe |
| JPS5648055U (de) * | 1979-09-21 | 1981-04-28 | ||
| JPS5742856A (en) * | 1980-08-27 | 1982-03-10 | Toshiba Corp | Absorbing and desorbing method for automatic chemical analytical apparatus |
| JPS6050433A (ja) * | 1983-08-31 | 1985-03-20 | Toshiba Corp | 自動化学分析装置における分注・撹拌装置 |
| US4574850A (en) * | 1985-01-17 | 1986-03-11 | E. I. Du Pont De Nemours And Company | Method of and apparatus for dispensing liquid |
| JPS61234335A (ja) * | 1985-04-11 | 1986-10-18 | Aloka Co Ltd | 分注方法 |
| JPS62184357A (ja) * | 1986-02-07 | 1987-08-12 | Seiko Instr & Electronics Ltd | ピペツトによる液体の撹拌方法 |
| CH673894A5 (de) * | 1987-10-15 | 1990-04-12 | Nivarox Sa | |
| JPH03142362A (ja) | 1989-10-27 | 1991-06-18 | Shimadzu Corp | 自動分析装置 |
| AU657544B2 (en) * | 1991-08-07 | 1995-03-16 | Toa Medical Electronics Co., Ltd. | Method and apparatus for agitating and sampling a liquid specimen |
| JP3043510B2 (ja) * | 1992-02-05 | 2000-05-22 | シスメックス株式会社 | 試料攪拌吸引装置 |
| JP2725917B2 (ja) * | 1991-10-04 | 1998-03-11 | アロカ株式会社 | 血液試料の分注方法 |
| JP2795564B2 (ja) * | 1991-10-08 | 1998-09-10 | アロカ 株式会社 | 高粘性液体の希釈方法 |
| JP3328048B2 (ja) * | 1994-02-25 | 2002-09-24 | 富士写真フイルム株式会社 | 液体の混合方法 |
| JP3343038B2 (ja) * | 1996-10-03 | 2002-11-11 | ダイナボット株式会社 | 自動検体検査測定装置における分注方法 |
| US6685693B1 (en) * | 2000-08-09 | 2004-02-03 | J. Michael Casso | Method of preparing a syringe for injection |
| DE10052819B4 (de) * | 2000-10-24 | 2004-02-19 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Pipettensystem und Pipettenarray sowie Verfahren zum Befüllen eines Pipettensystems |
| CH695544A5 (de) * | 2000-11-17 | 2006-06-30 | Tecan Trading Ag | Vorrichtung zur Abgabe bzw. Aufnahme/Abgabe von Flüssigkeitsproben. |
| JP4613283B2 (ja) * | 2001-02-02 | 2011-01-12 | アークレイ株式会社 | 微量液の供給装置および混合装置 |
| US7125727B2 (en) * | 2003-01-29 | 2006-10-24 | Protedyne Corporation | Sample handling tool with piezoelectric actuator |
| US7621892B2 (en) * | 2003-12-31 | 2009-11-24 | Mallinckrodt Inc. | Contrast container holder and method to fill syringes |
-
2006
- 2006-04-11 DE DE102006017360A patent/DE102006017360A1/de not_active Withdrawn
-
2007
- 2007-04-11 ES ES07727993T patent/ES2372545T3/es active Active
- 2007-04-11 AT AT07727993T patent/ATE523789T1/de active
- 2007-04-11 EP EP07727993A patent/EP2005196B1/de not_active Not-in-force
- 2007-04-11 CN CN2007800127532A patent/CN101611322B/zh not_active Expired - Fee Related
- 2007-04-11 US US12/226,122 patent/US8246239B2/en not_active Expired - Fee Related
- 2007-04-11 JP JP2009504742A patent/JP5055357B2/ja not_active Expired - Fee Related
- 2007-04-11 WO PCT/EP2007/053525 patent/WO2007116083A1/de not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3115568A1 (de) * | 1980-04-18 | 1982-04-15 | Beckman Instruments Inc., 92634 Fullerton, Calif. | Verfahren und vorrichtung zum mischen von fluessigkeiten unter verwendung einer automatisierten pipette |
| US5133392A (en) * | 1991-04-10 | 1992-07-28 | Eastman Kodak Company | Liquid injection using container bottom sensing |
| WO1993025309A1 (en) * | 1992-06-17 | 1993-12-23 | Niilo Kaartinen | Method for mixing a quantity of liquid in a container for an analysis, a mixing and measuring needle and method for manufacturing the needle |
| EP1138372A2 (de) * | 2000-03-27 | 2001-10-04 | ARKRAY, Inc. | Verfahren zum Rühren einer Flüssigkeit |
| EP1498736A1 (de) * | 2003-07-18 | 2005-01-19 | Ortho-Clinical Diagnostics, Inc. | Verfahren zum Mischen einer Flüssigkeit in einem Analysegerät |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009533664A (ja) | 2009-09-17 |
| CN101611322A (zh) | 2009-12-23 |
| ES2372545T3 (es) | 2012-01-23 |
| JP5055357B2 (ja) | 2012-10-24 |
| DE102006017360A1 (de) | 2007-10-18 |
| EP2005196A1 (de) | 2008-12-24 |
| EP2005196B1 (de) | 2011-09-07 |
| US8246239B2 (en) | 2012-08-21 |
| HK1140259A1 (en) | 2010-10-08 |
| CN101611322B (zh) | 2012-11-14 |
| ATE523789T1 (de) | 2011-09-15 |
| US20090316519A1 (en) | 2009-12-24 |
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