EP2598242A1 - Procédé et un dispositif de séparation d'éléments constitutifs d'un échantillon liquide - Google Patents

Procédé et un dispositif de séparation d'éléments constitutifs d'un échantillon liquide

Info

Publication number
EP2598242A1
EP2598242A1 EP11730285.1A EP11730285A EP2598242A1 EP 2598242 A1 EP2598242 A1 EP 2598242A1 EP 11730285 A EP11730285 A EP 11730285A EP 2598242 A1 EP2598242 A1 EP 2598242A1
Authority
EP
European Patent Office
Prior art keywords
chamber
sample liquid
channels
examination
channel
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.)
Granted
Application number
EP11730285.1A
Other languages
German (de)
English (en)
Other versions
EP2598242B1 (fr
Inventor
Tobias Rodenfels
Gert Blankenstein
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.)
Boehringer Ingelheim Microparts GmbH
Original Assignee
Boehringer Ingelheim Microparts GmbH
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 Boehringer Ingelheim Microparts GmbH filed Critical Boehringer Ingelheim Microparts GmbH
Priority to EP11730285.1A priority Critical patent/EP2598242B1/fr
Publication of EP2598242A1 publication Critical patent/EP2598242A1/fr
Application granted granted Critical
Publication of EP2598242B1 publication Critical patent/EP2598242B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B01L3/508—Containers for the purpose of retaining a material to be analysed, e.g. test tubes rigid containers not provided for above
    • 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
    • B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
    • B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
    • B01L3/502753—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip characterised by bulk separation arrangements on lab-on-a-chip devices, e.g. for filtration or centrifugation
    • 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
    • B01L2200/0621—Control of the sequence of chambers filled or emptied
    • 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
    • B01L2300/06—Auxiliary integrated devices, integrated components
    • B01L2300/0681—Filter
    • 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
    • B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
    • B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
    • B01L3/502723—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip characterised by venting arrangements

Definitions

  • the present invention relates to a device for the treatment and preferably examination of sample liquid, in particular blood, according to the preamble of claim 1 and such a method.
  • the present invention is particularly concerned with microfluidic systems and devices.
  • the following explanations therefore relate in particular to devices in which capillary forces act and, in particular, are decisive for the function.
  • the flat, thin separating device may be slightly deformed transversely to its surface extension, in particular in the adjoining the separator downstream chamber.
  • the channel extends into the middle of the chamber or under the separator, with the lowest possible chamber height, ie the smallest possible distance to the separator and accordingly low dead volume no very uniform derivative out of the chamber under the separator. Rather, essentially only in the region of the channel, the pores of the separation device are filled with blood cells or other components filtered out. Accordingly, an optimal throughput, especially in capillary force driven operations is not achieved.
  • the present patent application is based on the object of specifying a device and a method for the treatment and preferably examination of sample liquid, in particular blood, wherein an optimization of the fluidic throughput is made possible in a simple manner and / or while avoiding an excessively increased dead volume.
  • a basic idea of the present invention is that the sample liquid from the downstream of the separator - especially directly and / or flat - subsequent chamber not only one, but at least two channels and accordingly not only one, but at least two lateral Derive drainage areas.
  • a significantly higher throughput or a significantly greater amount of sample liquid can be derived.
  • This can be explained in particular by the fact that a better discharge from different areas of the substantially flat or planar chamber and thus also from different areas of the areal separator takes place. Accordingly, the permeability of the sample liquid separator is better utilized over a wider range than is otherwise the case with only a small channel channel.
  • the sample liquid derived from the two channels ie the sample liquid filtered by the separation device, such as blood plasma or blood serum
  • the channels are preferably brought together in a connecting chamber or connecting line, which is particularly preferably vented in order to avoid undesired gas or air influences, in particular in the case of channels filling at different rates.
  • Fig. 1 is a schematic section of a proposed device
  • Fig. 2 is a schematic plan view of a carrier of the proposed device according to a first embodiment
  • Fig. 3 is a schematic plan view of a carrier of the proposed device according to a second embodiment.
  • Fig. 1 shows in a schematic section a proposed device 1 for the treatment and preferably examination of sample liquid 2, in particular blood or other human or animal body fluid.
  • the apparatus 1 has a planar separating device 3 for treating the sample liquid 2, in particular for separating off constituents, such as particles or cells, from the sample liquid 2.
  • the serves Separator 3 of the filtering It preferably has a filter element, a membrane or the like. on.
  • the separator 3 may be constructed one or more layers. It is preferably flat or flat.
  • the separating device 3 is formed by or provided with a membrane as described in WO 2009/106331 A2, which is hereby incorporated in its entirety as a supplementary disclosure.
  • the device 1 has a chamber 4 for receiving sample liquid 2 that has flowed through the separating device 3.
  • the chamber 4 thus receives sample fluid 2 treated or filtered by the separating device 3, such as blood plasma or blood serum.
  • the chamber 4 preferably connects flat side and directly to the separator 3 downstream.
  • the chamber 4 is arranged below the separating device 3.
  • the separating device 3 is larger in area than the chamber 4 is formed.
  • the separating device 3 protrudes laterally beyond the chamber 4, in the illustrated embodiment particularly preferably on all sides.
  • the sample liquid 2 is guided free in the chamber 4 side wall. This is achieved in the illustrated example, in particular, that adjoins a bottom 5 of the chamber 4 laterally a capillary stop, which is particularly preferably formed by a circumferential or laterally adjoining trench 6.
  • a capillary stop which is particularly preferably formed by a circumferential or laterally adjoining trench 6.
  • the chamber 4 is formed in particular between the bottom 5 of the chamber 4 on the one hand and the opposite region of the separating device 3. Due to the small distance between these two opposite surfaces, the sample liquid 2 is preferably kept free of side walls in the chamber 4 by capillary forces.
  • the trench 6 forms by its abrupt cross-sectional enlargement - ie its greater depth relative to the chamber height (distance of the bottom 5 of the separator 3) - the capillary stop.
  • the device 1 preferably has a carrier 7, an associated cover 8 and / or a receiving element 9.
  • the carrier 7 is preferably plate-like and / or rigid.
  • the carrier 7 is preferably made of plastic and / or by injection molding.
  • the carrier 7 preferably has microfluidic structures for the sample liquid 2 and / or deaeration structures or the like. on, which will be discussed later. These structures are preferably - at least partially - covered by the cover 8.
  • the cover 8 is preferably made of plastic and / or designed as a film.
  • the cover 8 is preferably laminated to the carrier 7 or glued or otherwise connected thereto.
  • the cover 8 preferably extends at least substantially over the entire surface or continuously over the carrier 7.
  • the receiving element 9 preferably serves to hold the separating device 3 and / or a receptacle of the sample liquid 2, such as a blood drop, as indicated in Fig. 1.
  • the receiving element 9 has for this purpose, for example, a receiving area 10, such as an opening, opening or the like.
  • the separator 3 may, for example, in an annular shoulder or the like. be held on the receiving element 9.
  • the separating device 3 is connected, for example, by gluing, clamping and / or welding or in any other suitable manner with the receiving element 9 and / or the carrier 7 or the cover 8 or held thereof.
  • the receiving element 9 is arranged on the cover 8 or connected thereto.
  • the receiving element 9 can also be directly connected to the carrier 7 and / or be formed by this.
  • the trench 6 is preferably connected via a venting channel 1 1 to the environment.
  • the venting channel 1 1 is formed in the carrier 7.
  • other constructive solutions for venting are possible.
  • the sample liquid 2 that has passed through the separator 3 is also referred to as the sample liquid 2.
  • Fig. 1 is only schematically indicated that the sample liquid 2 upstream of the separator 3, for example, schematically indicated larger components may contain, which are no longer contained in the sample liquid 2 after flowing through the separator 3 - ie in the chamber 4. It is in particular in the chamber 4 and further downstream then to the treated or filtered sample liquid 2 or its permeate. The further description is to be understood in particular in this sense.
  • FIG. 2 shows a schematic plan view of a preferred fluidic structure for discharging the sample liquid 2 from the chamber 4 of the proposed device 1 according to a first embodiment.
  • FIG. 2 shows, in a schematic plan view, the carrier 7 without cover 8, receiving element 9, separating device 3, sample liquid 2.
  • the device 1 has a first channel 12, which laterally adjoins the chamber 4 in a first outflow region 13.
  • the device 1 further has at least one second channel 14, which laterally adjoins the chamber 4 in a second discharge region 15.
  • the device 1 thus has a plurality of channels 12, 14 and discharge regions 13, 15 for the discharge of sample liquid 2 from the chamber 4.
  • the channels 12, 14 have a relation to the chamber 4 a substantially smaller cross-section.
  • the channels 12, 14 preferably each have a minimum or average cross section or a cross section in the region of the respective outflow region 13/15, which is less than 20%, preferably less than 15%, in particular less than 10%, particularly preferably less than 5 % of the maximum cross section of the chamber 4 is.
  • Maximum cross-section of the chamber 4 is to be understood here in particular as a product of chamber height with the average or maximum diameter of the bottom 5.
  • the channels 12, 14 and drainage areas 13, 15 are preferably offset at the edge of the chamber 4 or arranged or connected on opposite sides. Accordingly, the discharge of sample liquid 2 from the chamber 4 takes place from different regions or at different points, whereby the throughput of the device 1 or the separation or filter performance of the device 1 or the separating device 3 are significantly increased in a surprisingly simple manner can, as already explained at the beginning.
  • FIG. 2 shows that the lateral trench 6 is subdivided by the outflow regions 13, 15 into two trench sections which surround the chamber 4 or its bottom 5, in particular like an annular segment.
  • the outflow regions 13, 15 thus form web-like or bridge-like connections via the trench 6 to the chamber 4 or its bottom 5.
  • other constructive solutions are possible.
  • the channels 12, 14 are preferably formed by groove-like or groove-like depressions, in particular in the carrier 7.
  • the channels 12, 14 preferably extend into or over the drainage regions 13, 15, particularly preferably into the chamber 4 or the bottom 5 and / or under the separating device 3.
  • the channels 12, 14 end open towards the separating device 3 in their respective end region.
  • the cover 8, which otherwise covers the channels 12, 14, may also, as required, extend into or over the drainage regions 13, 15 and / or into the chamber 4 or over the bottom 5, in particular to form tongue-like protuberances 16, as in FIG Fig. 2 indicated by dash-dotted lines.
  • the channels 12, 14 may extend at least substantially to the middle of the chamber 4 and / or be interconnected in the chamber 4 or in the bottom 5, as indicated by dashed lines in Fig. 2.
  • the device 1 has a preferably chamber-like examination area 17 for the examination of sample liquid 2 derived from the chamber 4.
  • both the first channel 12 and the second channel 14 are fluidly connected to the examination area 17 in the illustrated example. This can be done either directly or optionally via a connecting line 18 and / or a connecting chamber 19, as indicated in Fig. 2.
  • the connection line 18 and the connecting chamber 19 are thus in particular optional and can also be omitted if necessary.
  • the two channels 12 and 14 initially combine and the sample liquid 2 derived from the chamber 4 is then forwarded to the examination region 17 via the common connection line 18.
  • the optional connecting chamber 19 is preferably formed. As I said, but this is only optional and can be omitted if necessary.
  • a vent for the examination area 17 and / or for the connecting line 18 and / or connecting chamber 19 is provided.
  • the venting of connecting line 18 and connecting chamber 19 is preferably carried out in the illustrated embodiment by a vent channel 20, for example, directly or indirectly connected to the environment and / or may be in gas exchange and / or with the examination area 17 and / or trench 6 for venting or can be connected.
  • the venting provided is preferably designed in such a way that, even if the channels 12, 14 are filled with sample liquid 2 at a different rate, undesired gas or air inclusion in the examination area 17 or in the sample area 2 supplied to the examination area 17 is avoided he follows.
  • the vent is preferably also by groove-like or groove-like depressions and / or openings or the like. formed in the carrier 7 and / or, if necessary, in the cover 8.
  • the connecting chamber 19 preferably serves primarily only for venting and therefore has a preferably only minimal volume.
  • a second embodiment of the proposed device 1 or microfluidic structure will be explained below with reference to FIG. Here, only essential differences from the first embodiment will be explained. The previous remarks and explanations therefore apply in particular supplementary or corresponding.
  • Fig. 3 shows a plan view corresponding to Fig. 2.
  • the two channels 12, 14 are connected to separate examination areas 17 and 21.
  • the device 1 thus has, in addition to the (first) examination area 17, a further or additional examination area 21, which is supplied with sample fluid 2 by the second passage 14.
  • connection line 18 or connection chamber 19 may also be connected to a further separate examination area 21 in addition to the examination area 17 in order to separate or divide the sample liquid 2 removed from the chamber 4 again after the channels 12, 14 have been combined.
  • the device 1 is in particular a microfluidic device.
  • the volumes of the device 1 or individual or all microfluidic structures, such as the chamber 4, the channels 12, 14, the connecting line 18, the connecting chamber 19 and / or the examination areas 17, 21 are preferably less than 1 ml, in particular less than 500 ⁇ , more preferably substantially 100 ⁇ or less.
  • the volume of the channels 12, 14 is in each case preferably less than 20%, in particular less than 10%, of the volume of the chamber 4.
  • the preferred derivation of the Probenilüsstechnik 2 from the chamber 4 on the other hand, in cross-section small, but multiple channels 12, 14 has the advantage that even with minimal volume of the chamber 4, in particular minimum chamber height or possibly little or no microstructuring of the chamber 4 or the chamber bottom 5 to minimize the dead volume, a good throughput or a high separation efficiency can be achieved.
  • a channel 12 or 14 fails or clogs, treatment and, in particular, examination of the sample liquid 2 can take place if the two channels 12, 14 are fluidically connected to a common examination area.
  • the use of a plurality of channels 12, 14 can also achieve a faster filling of the examination areas 17 and 21 compared to the prior art.
  • the channels 12 and 14 preferably extend at least substantially in the main extension plane of the chamber 4 or the carrier 7 and / or in a plane parallel thereto.
  • the device 1 can in particular for the examination of the sample liquid 2 or for the determination of an analyte in the sample liquid 2 or the like. be used.
  • the device 1 for realizing a Imuno assay reaction or the like serve.
  • the device 1 can serve for the determination or analysis of specific analytes or other values of the sample liquid 2.

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Hematology (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Dispersion Chemistry (AREA)
  • Automatic Analysis And Handling Materials Therefor (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

Echantillon liquide collecté dans une chambre après passage dans un dispositif de séparation. Plusieurs canaux sont raccordés à la chambre, ces canaux conduisant l'échantillon liquide vers une ou plusieurs zones d'examen.
EP11730285.1A 2010-07-27 2011-07-05 Dispositif de séparation d'éléments constitutifs d'un échantillon liquide Active EP2598242B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11730285.1A EP2598242B1 (fr) 2010-07-27 2011-07-05 Dispositif de séparation d'éléments constitutifs d'un échantillon liquide

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP10007768 2010-07-27
PCT/EP2011/061307 WO2012019829A1 (fr) 2010-07-27 2011-07-05 Procédé et un dispositif de séparation d'éléments constitutifs d'un échantillon liquide
EP11730285.1A EP2598242B1 (fr) 2010-07-27 2011-07-05 Dispositif de séparation d'éléments constitutifs d'un échantillon liquide

Publications (2)

Publication Number Publication Date
EP2598242A1 true EP2598242A1 (fr) 2013-06-05
EP2598242B1 EP2598242B1 (fr) 2018-11-14

Family

ID=43427676

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11730285.1A Active EP2598242B1 (fr) 2010-07-27 2011-07-05 Dispositif de séparation d'éléments constitutifs d'un échantillon liquide

Country Status (4)

Country Link
US (1) US8974751B2 (fr)
EP (1) EP2598242B1 (fr)
JP (1) JP5850373B2 (fr)
WO (1) WO2012019829A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP1530328S (fr) * 2015-02-17 2015-08-03

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4753776A (en) * 1986-10-29 1988-06-28 Biotrack, Inc. Blood separation device comprising a filter and a capillary flow pathway exiting the filter
US5135719A (en) * 1986-10-29 1992-08-04 Biotrack, Inc. Blood separation device comprising a filter and a capillary flow pathway exiting the filter
CN1650173B (zh) 2002-04-30 2012-06-06 爱科来株式会社 分析用具、使用分析用具的试样分析方法及分析装置、和分析用具的开口形成方法
DE102004027422A1 (de) 2004-06-04 2005-12-29 Boehringer Ingelheim Microparts Gmbh Vorrichtung zur Aufnahme von Blut und Abtrennung von Blutbestandteilen
US7682817B2 (en) * 2004-12-23 2010-03-23 Kimberly-Clark Worldwide, Inc. Microfluidic assay devices
WO2007090620A2 (fr) * 2006-02-10 2007-08-16 Boehringer Ingelheim Microparts Gmbh Dispositif et procédé de traitement ou d'épuration d'échantillons, notamment d'acides nucléiques
US7872735B2 (en) 2007-07-06 2011-01-18 Jds Uniphase Corporation Method and apparatus for referencing a MEMS device
JP5475692B2 (ja) 2008-02-27 2014-04-16 ベーリンガー インゲルハイム マイクロパーツ ゲゼルシャフト ミット ベシュレンクテル ハフツング 血漿の分離装置
US8475734B2 (en) * 2008-03-11 2013-07-02 Koninklijke Philips Electronics N.V. Filtering apparatus for filtering a fluid

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012019829A1 *

Also Published As

Publication number Publication date
JP5850373B2 (ja) 2016-02-03
WO2012019829A1 (fr) 2012-02-16
US20130202500A1 (en) 2013-08-08
EP2598242B1 (fr) 2018-11-14
JP2013535673A (ja) 2013-09-12
US8974751B2 (en) 2015-03-10

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