WO2005011866A1 - Procede et dispositif d’analyse chimique ou biologique par senseur a chambre monolithique en gerbe multi-micro-tubulaire et transducteur lateral de mesure integrale - Google Patents
Procede et dispositif d’analyse chimique ou biologique par senseur a chambre monolithique en gerbe multi-micro-tubulaire et transducteur lateral de mesure integrale Download PDFInfo
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- WO2005011866A1 WO2005011866A1 PCT/FR2004/001707 FR2004001707W WO2005011866A1 WO 2005011866 A1 WO2005011866 A1 WO 2005011866A1 FR 2004001707 W FR2004001707 W FR 2004001707W WO 2005011866 A1 WO2005011866 A1 WO 2005011866A1
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- 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
- B01L3/5085—Containers for the purpose of retaining a material to be analysed, e.g. test tubes rigid containers not provided for above for multiple samples, e.g. microtitration plates
- B01L3/50857—Containers for the purpose of retaining a material to be analysed, e.g. test tubes rigid containers not provided for above for multiple samples, e.g. microtitration plates using arrays or bundles of open capillaries for holding samples
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- 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
- B01L3/0275—Interchangeable or disposable dispensing tips
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- 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
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/543—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals
- G01N33/54366—Apparatus specially adapted for solid-phase testing
- G01N33/54386—Analytical elements
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- 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
- B01L2300/0627—Sensor or part of a sensor is integrated
-
- 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
- B01L2300/069—Absorbents; Gels to retain a fluid
Definitions
- the invention relates to the technical field of chemical and / or biological sensors.
- the purpose of a sensor is to implement a method for evaluating the concentration of an analyte in a sample fluid.
- the analyte elements are generally soluble chemical entities or living or dead microorganisms, or parts of microorganisms (enzyme, antibody, antigen, microbial cell, gas, ion, metabolite, microorganism, protein, oligonucleotide. ..).
- the analyte can be found in any fluid sample such as a liquid or a gas (air ).
- the purpose of a sensor is to convert the concentration of the analyte included in the sample fluid into an exploitable analytical signal (generally electrical).
- the term “sensor” means a concentration measurement device which brings together: - within a reaction chamber, a chemical compound, known as a receptor, for (molecular) recognition of the analyte and of emission (possibly using another so-called revealing compound which can be confused with the receiver) of an elementary physicochemical signal of recognition, - and a hardware system, said transducer, of reception of this signal.
- a sensor from an analytical system which incorporates either other additional separation steps, such as liquid chromatography (HPLC), or additional hardware equipment, as is the case for flow injection analysis (FIA).
- the receptor is a chemical and / or biological compound, both: - adapted to recognize the analyte, - and capable of generating, in combination with the analyte (and possibly a developer) , a measurable elementary signal of the presence of an analyte element.
- the transducer is a physical means (hardware) which converts the action of the receptor (or bio receptor) - resulting in the generation of a multitude of recognition events of elements-analytes, - into a global signal making it possible to quantify the presence of this analyte element in the sample.
- the sensors can be classified using the following parameters which determine their operational capacities: - the type of receptor used, - the way in which the analyte interfaces with the receptor, - the type of elementary signal for the presence of a element-analyte emitted, - the geometry of the reaction chamber, - the structure and geometry of the transducing means and its position relative to the reaction chamber, that is to say the relative geometry of the couple reaction chamber /transducer.
- the invention relates specifically to the technical field of processes and sensor devices (chemical and / or biological) - whose reaction chamber is multi-micro-tubular monolithic, - and whose transducer is entirely located outside the volume d test of the reaction chamber.
- the invention relates to a method improving the performance of chemical and / or biological sensors as well as a new sensor geometry implementing this improvement.
- a particular class of sensors known from the prior art consists of biosensors.
- the chemical recognition system uses a biochemical mechanism.
- the receptor can be an antibody, an enzyme, a cell, a portion of cell or organ membrane, a fraction of cellular tissue, or an organism ...
- a receptor biological receptor
- Glucose + 0 2 - gluconic acid + H 2 0 2 This type of enzyme receptor sensor was first described by Clark and Lyons in 1962.
- the transduction that is to say the measurement of glucose present in the liquid, can theoretically be carried out: - by an oxygen transducer which will measure the ratio between the oxygen present before and after the enzymatic recognition reaction, - by a pH transducer which will measure the production of gluconic acid during the recognition enzyme reaction, - or by a peroxide transducer which will measure the production of H 2 O 2 during the recognition enzyme reaction. It will be noted that according to these three methods the transducer is located partly upstream and downstream of the reaction chamber.
- the recognition step be the most “bijective”, that is to say that is to say that the greatest possible proportion of elements-analytes are recognized by a receptor-element, (it is rare that several identical receptor-elements identify the same element-analyte), - and on the other hand, that transduction is as sensitive as possible and to do this it relates to the largest possible amount of recognized analyte-analytes.
- - average test distance the average of the distances between the elementary portions of sample fluid inside the sensor test chamber and the test surface
- - and average test section of the chamber reaction time twice the average test distance.
- This two-dimensional category includes first of all the capillary membrane test devices.
- a capillary membrane test is called an analysis method implemented inside a thin membrane made up of a porous medium such as blotting paper.
- a specific developer of the analyte sought is immobilized on a specific test area of the membrane.
- the sample liquid including the analyte migrates through the porous medium by capillary action.
- the analyte binds with the developer. This reaction causes a chemiluminescent phenomenon such as fluorescence or coloring of the specific test area. This makes it possible to conclude in a binary manner as to the presence or not of analyte.
- This “surface” strategy of testing on a capillary membrane responds well to the required “chemical” conditions described above, that is to say: - large test surface, - small average test section, - small overall volume.
- a first sub-variant of this second sensor strategy can be described as “volume with low area ratio” chamber sensors.
- An example of this strategy is the use as an analysis cell of a hollow conical pipette-support in the VIDAS devices of the company BioMérieux (France).
- the sample fluid is withdrawn inside a conical pipette-holder covered internally with a receiver.
- reagents and washing solutions are successively aspirated and discharged into the inner cone of the pipette.
- the pairs receptor-analyte
- This method certainly allows to automate a large number of tests and to facilitate the manipulation by the operator of samples and reagents.
- capillary structures in the field of sensors.
- Those skilled in the art are familiar with porous structures, in particular obtained by assembling microbeads of polyethylene or polystyrene or fibers of cellulose derivatives, agglutinated to form a porous network.
- These capillary structures are intended to immobilize analytes, and to be crossed by reagents.
- the membrane tests described above use these techniques. It is the material on which pregnancy tests commonly used in the home or streptococcus tests for angina are based. As seen above, the reading of these tests is purely visual when a coloration appears.
- the prior art also knows the manufacture and use of multi-tubular monolithic structures for applications not related to analysis.
- the company (US) Schott produces and markets it for laboratory and optoelectronic applications.
- the company (US) Burle produces and markets it for electronic tube and photomultiplier applications.
- the company (US) Collimated Holes produces and markets it for applications related to optical fibers.
- these chambers with a multi-micro-tubular structure according to the prior art typically have micro-tube diameters of five microns to one millimeter.
- the geometry of the micro-tubes is generally of circular, hexagonal or square section.
- the number of micro-tubes assembled is approximately 200,000.
- the overall section of the chamber is of the order of 25 mm.
- the tubes spaced from each other, are connected in parallel at a first end to a blood inlet connector and at a second end to a blood outlet connector.
- the assembly is placed inside an envelope through which the dialysate circulates. This system does not use a chemical receptor inside the tubes, nor a transducer. It is therefore not an application of sensors.
- the sensors of the prior art according to the second sub-variant of this second “multi-three-dimensional” strategy aim to implement the identification by the receptor of the analyte within a multi-dimensional test volume. -canalisé.
- This strategy can be described as “volume with a high surface area ratio”.
- the prior art does not concern itself with the structure of the transducer and the geometry of the multi-tubular chamber / transducer couple.
- the technological background of the invention knows the manufacture and use of non-monolithic multi-tubular "multi-three-dimensional" structures for analysis-related applications.
- test volume consists of a single capillary tube or a small number of capillary tubes separated from each other.
- the sample fluid is placed in one or more wells of a disposable receiving tray after use. It is mixed with a reagent, drawn into one or more of the capillary test tubes, separated in a support box, connected to an analysis device.
- the analyte elements react with receptor elements carried by the surface of the test capillary tube (s).
- the test tubes are then washed to stop the reaction and dried.
- each capillary test tube is then exposed to a lamp to create a fluorescence signal which is detected by a transducer.
- each capillary tube is separate and distant from the others (it is a non-monolithic structure)
- the transduction measurement is carried out tube by tube (there is no description of transducer geometry laterally encompassing all of the tubes).
- sensitivity ratio between the internal test surface of the reaction chamber and its test volume] is low because it implements a small number of pipes spaced from each other. So that its sensitivity is low.
- a second defect of this device is that its tube support box is bulky, expensive and difficult to transport and handle (due to its size).
- Multithrough hole testing plate for high throughput screening describes a screening device using a multi-micro-tubular structure to connect the reservoirs of a product library to the bottom of the wells of a multi-well plate .
- the proximal ends (on the side of the multi-well plate) are welded together to form a monolithic multi-tubular reaction head.
- the distal ends (on the reservoir side of the library) remain individualized in the form of flexible tubes. This is to circumvent the difficulty of filling very small wells. This is not a sensor application. No reaction of the receptor analyte type inside the tubes is described in this document. Furthermore, no transducer for measuring analyte detection is described.
- the transduction is therefore carried out separately inside each of the tubes of the structure.
- the signal is collected at the end of each of the tubes.
- the main drawback of a transducer beam sensor of this type would be the complexity of the geometry of the transducer / microchannel couples, and the associated manufacturing costs.
- the possible connection of the multitude of optical fibers would make the assembly expensive and fragile. This would make the manufacture of disposable mobile test cartridges using this technique unacceptable.
- Document WO 02/10761 A1 (“Microarrays and their manufacture by slicing”) also describes the manufacture of a high-throughput screening device in which each tube or cylinder of a spray of tubes or cylinders is covered with an agent different organic.
- sheaves are sectioned, perpendicular to their main direction, to form slices through which a sample is passed. But we observe the coloring of each tube at one of its ends. There is no transducer placed laterally at the spray of tubes. There is also no integration of the signals from the plurality of tubes into a single signal, since a signal is observed for each tube.
- US Patent 5,690,894 (“High density array fabrication and readout method for a fiber optic biosensor”) describes the manufacture and use of biosensors comprising a plurality of optical fibers, each optical fiber having attached to its sensitive end specific elements of an analyte. Each optical fiber acts purely as a transducer and ensures the only transport of optical information towards the other end. The fiber information is either viewed by an operator or processed by a digital device.
- This patent does not describe multi-channeling of the sample through a multitubular reaction chamber. It is therefore a technological background far removed from the invention.
- Patent EP 1,262,766 Method for analyzing a mixture of biological and / or chemical components using magnetic particles and device for the implementation of said method
- sensor uses antibodies as receptor elements and super paramagnetic beads as revealing elements. The transduction is based on the application of a magnetic field to the test volume and the measurement of the magnetic induction which results from the magnetization of all the revealing elements present in the test volume.
- the only described way of creating a porous capillary structure is based on an assembly of polyethylene microbeads. This document therefore does not deal with the specific field of sensors with multi-tubular reaction. This document also does not describe the relative geometry of the transducer reaction chamber torque.
- the main defect of the type of porous capillary structure envisaged by microbeads is to create a test volume with multiple random cavities which it has been found to cause numerous false detection events, in particular due to balls blocked in the cavities. This type of sensor configuration is imprecise.
- Another defect of this type of porous capillary structure is its "sensitivity" ratio [between the test surface of the reaction chamber and its test volume]. It is weaker than that of a multi-tubular structure so that its sensitivity is lower.
- US Pat. No. 6,027,627 “Automated parallel capillary electrophoretic System” describes an automated electrophoresis system.
- the device uses a cartridge which comprises: - a plurality of capillary tubes connected at their ends, but not tangent over their length, - and the same plurality of parallel electrophoresis tubes. At one end, the capillary tubes are connected to microtiter trays, and at the other to the electrophoresis tubes.
- the device also includes a gel supply system which serves as a migration medium. This allows capillary electrophoresis of samples present in each of the wells of the tray.
- micro-tubular structure (both capillary tubes and electrophoresis tubes) is not monolithic. Furthermore, this system does not carry out any reaction for the recognition of analyte by a receptor. Finally, the system does not include a transducer. It is not a sensor application.
- the invention relates to a method for evaluating the concentration of analyte elements of an analyte present in a sample fluid.
- Elements-analytes are soluble chemical entities or living or dead microorganisms, or parts of microorganisms.
- the invention relates to an improvement to the usual method of operating a sensor.
- a device for evaluating the concentration of analyte elements of an analyte present in a sample fluid is called a sensor. It consists of a reaction chamber internally materializing a test volume inside which the fraction is channeled. of the sample fluid to be analyzed, - and of a measuring transducer system. The test volume is circumscribed by a reaction envelope surface.
- the reaction envelope surface is defined as the smallest continuous surface surrounding said test volume.
- this envelope surface consists of - a permeable upstream front face, - a permeable downstream front face situated opposite the permeable upstream face, - and a substantially cylindrical impermeable side face, connected by its two ends at the edges of the two upstream and downstream faces.
- Any sensor uses an active component (chemical and / or biological) called a receptor, which is brought into contact with the sample fluid inside the test volume.
- the receptor elements have an affinity with the analyte elements to detect them.
- the receiver also has the property [alone or in combination with another active component called a developer also introduced inside the test volume] of modifying an elementary signal, an extensive state variable (physical and / or chemical) measurable, at each occurrence [or according to a certain law of probability], during an event of recognition of an analyte element by a receptor element.
- the transducer system for measuring the extensive state variable is a hardware component which makes it possible to quantify the presence of the analyte-elements in the sample fluid.
- the concentration evaluation method according to the invention is characteristic by the fact that in combination: - on the one hand, the fraction of the sample fluid is multi-channeled in parallel, through a sensor provided with a monolithic reaction in multi-micro-tubular sheaf, - on the other hand, the lateral transducer system for integral measurement of the extensive state variable is positioned entirely outside the test surface of the reaction chamber, and strictly opposite the impermeable lateral face, and finally, by means of the lateral transducer system of integral measurement, an integral measurement of the variations of said extensive state variable is carried out simultaneously in all the channels of the reaction chamber.
- a reaction chamber which consists of the union of a plurality of multi-tangent cylindrical micro-tubular channels so as to delimit a dense plurality of disjointed convex elementary volumes, arranged in a sheaf, open at their two ends. , and whose union constitutes a global volume of non-convex test.
- the channels are cylindrical, in the sense that they each delimit an elementary interior surface generated topologically by the displacement, along a central elementary line of continuous virtual skeleton, of a curve of continuous and closed shape, placed substantially perpendicularly.
- the channels are of length [that is to say of length of elementary central lines] substantially equal.
- the channels are micro-tubular, that is to say that they have an elementary internal section perpendicular to the elementary central line which has at least one selective transverse dimension of several orders of magnitude smaller than their length (typically of around 1000 times smaller).
- the channels are arranged substantially parallel, that is to say that their elementary central lines are arranged substantially parallel.
- the channels are multi-tangent. That is to say that each micro-tube is in longitudinal contact over substantially its entire length with at least one other neighboring micro-tube. So that all of the micro-tubular channels constitute a dense monolithic shower.
- the overall non-convex test volume is circumscribed by the reaction envelope surface, the permeable upstream and downstream front faces of which are located at the level of the inlet and outlet sections of the micro-tubular channels.
- FIGS 1, la and lb show the operating principles of the method for evaluating the concentration of analytes according to the invention using a cartridge sensor in monolithic multi-tubular spray and integral lateral transducer.
- FIG. 4a to 4d show the different stages of movement of fluids and reactants through the reaction chamber during operation of an immunological sensor with an antibody type receptor and developer with super-paramagnetic microbeads according to the invention.
- FIG. 5a and 5b show in perspective and in section, a first preferred embodiment according to the invention of a consumable mobile cylindrical cartridge for sensor.
- FIG. 6a shows in perspective, a second preferred embodiment according to the invention of a consumable mobile conical cartridge for sensor.
- FIG. 6b shows a preferred embodiment of the conical cartridge.
- FIGS 7a and 7b show in perspective two preferred variants of a third embodiment according to the invention of a cartridge, with monolithic chamber in multi-tubular sheaf laminated monoperiodic mobile consumable.
- - Figure 8 schematically describes the operating method according to the invention of a multi-localized sensor (in two parts).
- FIG. 9a, 9d and 9e schematically describe an embodiment according to the invention of a multi-localized sensor including a sampling gun and a revealing / measuring device.
- FIG. 9b and 9c describe an embodiment of needle cartridges according to the invention.
- FIG. 10 describes in more detail the block diagram of the development / measurement device of Figure 9e.
- FIG. 11 describes a variant of the extended test cartridge of a sampling cone.
- - Figures 15, 15a and 15b describe a robotic variant of a multi-localized carousel sensor, according to the invention.
- - Figures 16a and 16b describe the operating principle of a multi-localized sequential robotic analysis device according to the invention.
- FIG. 17a and 17b describe a variant of multi-chamber test cartridge.
- FIG. 17c describes a multi-cartridge multi-chamber test.
- FIG. 18a and 18b describe a simplified variant of a sampling syringe according to the invention.
- FIG. 19a to 19d schematically describe 4 modes of implementation of a multi-localized sensor according to the invention.
- - Figures 20a to 20c describe in simplified perspective, schematically and in section, a magnetic transducer device according to the invention.
- - Figure 21 describes a multi-analyte sensor produced according to the invention.
- - Figures 22, 22a and 22b describe a method preferred by the invention for manufacturing the multi-tubular sheaf array of a sensor cartridge.
- FIG. 23a to 23c illustrate the sequence of reactions of a sandwich type analysis.
- FIG. 24a and 24b illustrate the sequence of reactions of a displacement analysis.
- FIG. 25a and 25b illustrate the sequence of reactions of a replacement analysis.
- FIG. 1 describes on a particular example the method according to the invention of the operation of a sensor (Sen) for the evaluation of the concentration of analyte elements (a;) of an analyte (A) present in a fluid -sample
- the operation of the sensor (Sen) comprises the following steps: - a fraction of the sample fluid (F) is channeled inside a test volume (Vep) ,
- the sample fluid (F) is brought into contact, inside the test volume (Vep), with an active component (chemical and / or biological) called receptor (R), - we measure, using a measuring transducer system (T), the presence of the analyte elements (a;) in the sample fluid (F).
- an active component chemical and / or biological
- R receptor
- T measuring transducer system
- the test volume (Vep) is circumscribed by a reaction envelope surface (Sev).
- the reaction envelope surface (Sev) is defined as the smallest continuous surface surrounding said test volume (Vep).
- the sensor (Sen) mainly consists of a reaction chamber (Cre) which materializes the interior of the reaction envelope surface (Sev).
- the reaction envelope surface (Sev) has a permeable upstream front face (sfam), a permeable downstream front face (sfav) (located opposite the permeable upstream face (sfam)), and a waterproof lateral side (slat) substantially cylindrical.
- the lateral face (slat) is connected by its two ends to the edges (7, 8) of the two upstream (sfam) and downstream (sfav) front faces.
- the sen is of the immuno-magnetic type. It aims to evaluate by a sandwich type analysis the presence of analyte elements (ai) constituted by bacteria of the genus Cryptosporidium present in a sample fluid (F) of drinking water.
- RI first active receptor component
- the active receptor compound (R) is present in a beaker (6).
- Receptive elements (r j ) have the property of modifying from an elementary signal (dE), a measurable extensive state variable (physical and / or chemical) (E), at each occurrence [or according to a certain law of probability], during an event of recognition of an analyte element (aj) by a receptor element (r j ).
- the receptor elements ( ⁇ ) consist of pairs of a secondary antibody (as j ) [specific of the genus Cryptosporidium], onto which is grafted a superparamagnetic microbead (sp j ).
- the super-paramagnetic microbeads (sp j ) are devoid of magnetic activity in the absence of an external field, but induce a disturbance of an external magnetic field when it is applied to them.
- the purpose of the measurement transducer (T) is to measure the variations of said extensive state variable (E), here the magnetic field, so as to quantify the presence of the analyte elements (a;) in the sample fluid ( F) in the form of an exploitable analytical signal (Se).
- the transducer (T) measures the disturbances generated by the super-paramagnetic microbeads (sp j ) when applying a magnetic field (H) with regard to the impermeable lateral surface (slat).
- the fraction of the sample fluid (F), [the water loaded with bacteria], is multi-channeled in parallel through a reaction chamber (Cre).
- the reaction chamber (Cre) is monolithic multi-tubular, constituted by the union in sheaf, of a plurality of multi-tangent cylindrical micro-tubular channels (c l5 c 2 , ..., c k , ..., c n ).
- Figures la and 2 describe in more detail the configuration of the micro-tubular channels (c k ) inside the reaction chamber (Cre).
- the channels (c k ) are cylindrical, i.e.
- the channels (c k ) can have a curve of circular, elliptical, oval or polygonal shape (f) as illustrated in FIGS. 3a to 3d.
- the channels (c k ) are of substantially equal lengths (1), that is to say that the lengths of their elementary central lines (l k ) are equal.
- the channels (c) are micro-tubular, that is to say that their elementary interior section (s) perpendicular to the elementary central line (l k ) has at least one selective transverse dimension (dx) of several orders of magnitude smaller than their length (1) (typically of the order of 1000 times smaller).
- the channels (c k ) are arranged substantially parallel in sheaves, that is to say that their elementary central lines (l k ) are arranged substantially parallel. In addition, they are multi-tangent. That is to say that each micro-tube (c k ) is in longitudinal contact over substantially its entire length with at least one other neighboring micro-tube (c>).
- reaction chamber (Cre) internally delimits a dense plurality of disjointed convex elementary volumes (vecj, vec 2 , ..., vec, ..., vec n ) neighbors open at their two ends (ee k , es). Their union constitutes a non-convex overall test volume (Vep).
- the overall non-convex test volume (Vep) is circumscribed by the reaction envelope surface (Sev), whose permeable upstream (sfam) and downstream (sfav) front faces are located at the right of the inlet sections (se k ) and outlet (ss k ) of the micro-tubular channels (ci, c 2 , ..., c k , ..., c n ) -
- the sensor (Sen) is equipped with a lateral magnetic transducer system for integral measurement (T) of the extensive state variable (E).
- T the extensive state variable
- the primary (71) and secondary (73) windings of turns (74) surround the impermeable lateral face (slat) of the reaction chamber (Cre) in multi-micro-tubular spray.
- the active part of the lateral integral magnetic measurement transducer (T), and in particular the primary (71) and secondary (73) windings, is located entirely outside the envelope surface (Sev) of the reaction chamber. (Cre) and strictly opposite the waterproof lateral face (slat).
- the sensor (Sen) works as follows.
- the sample fluid (F) is initially located in the sample volume (Vec) of a beaker (1). It is removed via a suction pipe (2) plunging into the beaker (1) and sucked in using a dosing pump (3) located downstream. It is multi-channeled through micro-tubular channels (c k ) of the test cartridge (Car), which will be described in more detail in Figures 5a and 5b.
- Figure 4a describes the initial suction and multi-pipe of the sample fluid (F) through the reaction chamber (Cre). Then, as appears in FIGS.
- washing solutions and reagent are passed through by suction [and possibly backflow in certain implementation cases] micro-tubular channels (c k ) of the test cartridge (Car).
- the washing solution (4) consisting of a buffer [at pH 7.0], contained in a beaker (5), is aspirated by multi-channeling.
- a multi-channel suspension of the receptor (R) contained in the beaker (6) is aspirated.
- the washing solution (4) is aspirated again by multi-channeling it.
- the biochemical reactions of this particular case are illustrated in FIG. 1b and 23a to 23c.
- the receptor (RI) made up in this case of so-called primary antibodies specific to Cryptosporidium (ap m ), is grafted onto the glass wall (sep) of the micro-tubular channels (c k ) previously activated by silanization, according to state of the art.
- the sample fluid (F) passes, the Cryptosporidium bacteria (a;), if there are any, are specifically retained by these antibodies (ap m ).
- the magnetic lateral integral measurement transducer system (T) preferably operates according to the principle described in patent EP 1,262,766.
- a variable magnetic field (H) is applied via the primary winding (71), located on either side of the impermeable lateral surface (slat) of the reaction chamber (Cre).
- Each superparamagnetic particle (sp j ) inactive in the absence of an external magnetic field, induces an elementary disturbance (dE) yk of the field.
- dE elementary disturbance
- n ⁇ ij (dE) y (that is to say a summation) of the variations of said variable of extensive state (E) [the magnetic field (H)], concomitantly for all the elementary volumes (vec k ) at the same time, and for all the elementary signals (dE) j j in each elementary tube (c k ) to at the same time, through the waterproof lateral face (slat).
- the sum ⁇ E of these disturbances is then measured by means of the secondary winding (73) connected to the secondary current analysis device (12).
- the presence of the analyte elements (a,) in the sample fluid (F) in all the microtubular channels (c) is globally quantified at the same time by means of the field disturbances caused by the microbeads.
- the invention recommends specific dimensional relationships between the elements-analytes (a ⁇ and the micro-tubular channels (ci, c 2 , ..., c k , ..., c n )
- the example described relates to the case one wishes to evaluate the concentration of elements-analytes (a ⁇ of an analyte (A) biological [here microscopic fungi or bacteria].
- Their typical diameter (dt) is typically between 0.01 microns and 10 microns.
- the monolithic multi-tubular reaction chamber (Cre) be constituted by the union of a shower of micro-tubular channels 5 (c . , C 2 , ..., c k , ..
- Figures 3a to 3d describe the dimensions and geometric relationships recommended by the invention for the reaction chamber (Cre) and the
- the monolithic multi-micro-tubular bi-periodic reaction chamber (Cre) is constituted by the union of a plurality of n (n --_ around 300,000) micro-tubular channels (cj, c 2 , ... , c, ..., c n ).
- the micro-tubular channels (c k ) advantageously have a quasi-revolutive section, that is to say a section with a curve of continuous shape (f k ) such as circle, ellipse, polygon, oval, ...
- micro-tubular channels (c k ) are arranged parallel, adjacent and contiguously in the form of a spray (18) in a common axial direction (zz ') of orientation of their lines
- the actual diameter of the tubes (c), including the wall, is approximately 1.5 times the internal diameter (d), ie 15 microns.
- the monolithic chamber (Cre) has a diameter (De) of around [3 * (n / ⁇ ) * d], or around 10mm.
- the reaction chamber (Cre) is surrounded by a casing (19) also cylindrical molded in plastic.
- the case has a wall about 1mm thick. So that the diameter (De) of the test cartridge (Car) is approximately 12 mm. Its recommended length (L) is approximately 18 mm.
- This case (19) serves for its protection, its maintenance and facilitates its handling.
- the reaction chamber (Cre) is located at the base of the case (19) itself of a length (L) longer than that (1) of the chamber (Cre). So that an airlock tank (21) is formed inside the case (19) downstream of the reaction chamber (Cre).
- the case (19) is applied by force to the lateral face (slat) of the chamber (Cre) and it is equipped with a lateral sealing element, in this case an annular sealing tongue (20) overmolded. in line with the upstream face (22) of the base of the test cartridge (Car).
- FIGS. 6a and 6b show in perspective and in section a second preferred embodiment according to the invention of a test cartridge (Car) conical mobile consumable for sensor (Sen). This is similar to the cylindrical test cartridge (Car) described in Figures 5a and 5b.
- Its reaction chamber (Cre) also has the shape of a quasi-cylinder (Cyre). The difference is that the case (19), overmolded on the reaction chamber (Cre) has a conical shape.
- the implementation of this test cartridge (Car) of slightly frustoconical shape, with an angle at the top (te) is shown diagrammatically in FIG. 6b.
- the measuring cylinder head (Cme) is given a slightly frustoconical shape, with an angle at the top (te).
- the cylindrical internal measurement recess (Eme) is also given a slightly frustoconical shape, with an angle at the top (te).
- the frustoconical test cartridge (Car) is positioned inside the frustoconical internal measurement recess (Eme) of the measurement yoke (Cme). This ensures a intimate contact and a reduction in the distance between the lateral transducer system of integral measurement (T) and the reaction chamber (Cre). This also allows possible pressurization of the micro-tubular channels without leakage between the cartridge (Car) and the measurement cylinder head (Cme).
- Figures 22, 22a and 22b describe a preferred mode by the invention of manufacturing the multi-tubular network which constitutes the reaction chamber (Cre) of a cartridge (Car).
- a multitude of glass tubes (Ci, C 2 , ..., C k , ..., C n ) are brought closer and substantially parallel to one another, which are introduced into a treatment oven (61) so as to soften them.
- Their speed at the outlet of the oven (62) called stretching (Ve) being greater than that of supply (Va)
- they are stretched and a beam in monolithic continuous spray (65) of micro-tubular channels is thus formed ( ci, c 2 , ..., c k , ..., c n ).
- This beam is then periodically sectioned to constitute a plurality of monolithic reaction chambers (Cre) in multi-micro-tubular spray (18).
- each monolithic reaction chamber (Cre) is chemically conditioned according to the rules of the art according to the type of analysis that we intend to carry out next. For example, for a sandwich-type analysis, a uniform distribution and fixing are applied to the interior surface of the plurality of micro-tubular channels (cj, c 2 , ..., c, ..., c n ), a multitude of receptor elements (rl m ) of the receptor component (RI) (for example an antibody or a nucleic acid) which has an affinity for the analyte component (A).
- RI receptor component
- A an affinity for the analyte component
- the analyte elements enter into binding competition with the analogous elements (b m ) and move part of the receptor elements ( ⁇ ) immobilized on the interior surfaces (sep k ) from the reaction chamber (Cre). Thanks to the transducer, the decrease in the quantity of receptor elements (rj) inside the test volume (Vep) is followed. All of these steps are described schematically in Figures 24a and 24b.
- a replacement analysis sensor homogeneously deposit and fix on the elementary interior surfaces (sep k ) of the plurality of micro channels.
- tubular cc 2 , ..., c k , ..., c n
- receptor elements ⁇
- R tubular
- analogous elements b m
- analogous component B
- revealing elements u m
- analogous elements U
- the elements-analytes (aj) enter into competition of connection with the elements-analogues (b m ), take the place of a part of the elements-analogues (b m ) and their revealing elements (u m ), and are immobilized on the interior surfaces (sep k ) of the reaction chamber (Cre). Thanks to the transducer, the decrease in the quantity of revealing elements (u m ) inside the test volume (Vep) is followed. All of these steps are described schematically in Figures 25a and 25b.
- FIGS. 7a and 7b Another preferred mode of the invention is shown in FIGS. 7a and 7b, for producing a single-period lamellar chamber, according to which the fraction of the sample fluid (F) charged with analyte elements is multi-channeled in parallel. (aj), through a monolithic multi-tubular lamellar mono-periodic reaction chamber (Crel). This consists of a plurality of n (n ⁇ about 1,000) micro-tubular channels (ci, c 2 , ..., c k , ..., c n ) with lamellar section (salt k ).
- Their shape curve section (f k ) is substantially rectangular, and two perpendicular transverse dimensions (dx, dy) are at least a different order of magnitude (dx "dy).
- a selective transverse dimension (dx) is of the order of 10 microns
- the other lateral transverse dimension (dy) is of the order of 10mm.
- the microtubular channels (cc 2 , ..., c k , ..., c n ) with lamellar section are arranged in parallel, adjacent and contiguous layers in a common planar direction (yOz) of orientation of their central lines elementary (l k ).
- FIG. 7b represents a variant of manufacture of the lamellar reaction chamber, the structure of which is further reinforced by transverse pillars (Pil).
- FIGS. 19a to 19d describe four possible diagrams for implementing the method of the invention in a multi-localized form, according to which the places of sampling (L1), place of revelation (L2) and place of measurement (L3) can be separate or not. In Figure 19a, the three places above are distinct.
- the sample fluid (F) is sampled by multi-pipe through the test cartridge (Car).
- test cartridge (Car) is then transported to the second revealing place (L2) where the sample fluid (F) is brought into contact with inside the overall test volume (Vep) of the reaction chamber (Cre) with an active component (chemical and / or biological) called receptor (R) [and possibly with another active component called developer (U)] .
- the test cartridge (Car) is transported to a third measurement location (L3).
- the lateral transducer system for integral measurement (T) of the extensive state variable (E) is positioned.
- FIG. 19b the first place of sampling (L1) and the second place of revelation (L2) are gathered in a common place of sampling / revelation (L1 / L2).
- the test cartridge (Car) remains in the same device for the sampling and revelation phases. It is then transported to a separate third measurement location (L3).
- L3 the second place of revelation (L2) and the third place of measurement (L3) which are brought together in a common place of revelation / measurement (L2 / L3).
- FIG. 19d the first place of sampling (L1), the second place of revelation (L2) and the third place of measurement (L3) are gathered in a common place of sampling / revelation / measurement (L1 / L2 / L3).
- the test cartridge (Car) is not moved until the end of the analysis process.
- FIGS. 5a and 6a Figures 9a to 9e schematically describe a multi-localized sensor (in two parts) of the type of operation described in Figure 19c.
- a mobile sampling device (100) In a first sampling location (L1), a mobile sampling device (100) is used to sample the sample fluid (F) from a mobile test cartridge (Car).
- the mobile sampling device (100) In the example described, the mobile sampling device (100) is a sampling gun (34) shown in FIG. 9a.
- the sampling gun (34) comprises a sampling cylinder head (102) providing an interior sampling recess (103) of revolution shape (cylindrical or frustoconical).
- a rebate (107) disposed upstream of the sampling cylinder head (102) constitutes both a holding means (105) and a sealing means (106) of the movable cartridge (Car).
- the sampling cylinder head comprises after insertion of the test cartridge (Car) two openings: an upstream opening (111) for sampling the sample fluid (F) and a downstream opening (112).
- a pump (115) for movement of the sample fluid (F) is connected to one or other of the upstream sampling (111) or downstream (112) openings.
- the sampling gun (34) uses needle cartridges (38) described in FIG. 9c.
- a sampling needle (39), provided with a cap (40) is fitted in a sealed and removable manner on the protective case (19) facing the face upstream (22) of a cartridge (Car). It is located on the side of the permeable upstream front face (sfam) of the reaction chamber (Cre).
- the needle cartridge (38) is introduced into the cylinder head (102) of the sampling gun (34).
- the needle cartridge (39) is moved out of the barrel of the gun, so that the needle (39) is visible.
- the sample fluid (F) is sucked through the needle (39) and is multi-channeled in parallel through the reaction chamber (Cre) of the needle cartridge (38).
- the needle is then separated from its cartridge (Car) and collected in a housing for used needles.
- the protective case (19) of a test cartridge (Car) can be extended upstream of its upstream end face (22) in a sampling cone (80) provided with a sampling recess (81) at its end (82).
- a standard test cartridge (Car) can be used.
- the cartridge (Car) is removed from the sampling gun (34).
- the mobile test cartridge (Car) including the reaction chamber (Cre) in multi-micro spray, is introduced through a first housing (196). -tubular, inside the internal cylindrical measurement recess (Eme) of the measurement cylinder head (Cme).
- a shoulder (108) of the cylinder head (Cme) cooperates with the annular tongue (20). It serves as a means for holding (155) the movable cartridge (Car) and as a sealing means (156) for the cylinder head (Cme) after insertion of the movable cartridge (Car) with respect to the wall (154 ) of the internal measurement recess (Eme).
- the cylinder head (Cme) has an upstream opening (161) for introducing fluids (55) and a downstream opening (162).
- a pump (165) for movement of the sample and / or reagent fluids is connected to the upstream sampling opening (161). Then introduced into a second housing (194) located inside the independent revealing and measuring device (160) a well bar (50) [as shown in FIG.
- this rigid plastic bar containing the fluids (55) [reagents and solutions washing] necessary for an analysis according to the rules of art.
- this rigid plastic bar comprises four independent wells (51, 52, 53, 54) closed by a cover (49) made of a plastic sheet.
- the first well (51) contains a washing solution consisting of a buffer at pH 7.0.
- the second well (52) contains the receptor elements ( ⁇ ), [here a suspension of secondary antibodies (aS j ), specific for the analyte sought, for example Cryptosporidium]. These antibodies are grafted with superparamagnetic microbeads (sp j ).
- the third well (53) contains a washing solution consisting of a buffer at pH 7.0.
- the fourth well (54) is empty.
- the lateral integral transducer system (T) then performs an integral measurement of the variations of said extensive state variable (E), through both the substantially cylindrical external lateral surface (Secm) of the circumference of the cylinder head. (Cme), the side wall (Cpl) of the test cartridge (Car), and the impermeable side face (slat) of the reaction chamber (Cre).
- the traceability of the test cartridges (Car) between the place of sampling (Ll), here the sampling gun (34), and the place of revealing / measuring (L2 / L3), here the independent device of revealing and measuring (160), is provided by an identification label (83) of the proof cartridge (Car) with barcode of the type described in FIG. 5 a.
- the sampling gun (34) is equipped with a keyboard (33) allowing the entry of specific data of the sample fluid (F) sampled and of a Wifi type emission system towards a centralized database.
- the independent revealing and measuring device (160) is itself connected to this database, receives and sends there the data relating to the analysis identified by the bar code of the identification label (83). of the proof cartridge (Car).
- the independent revealing and measuring device (160) can be equipped with a printer (193) and a keyboard (190) or can be directly connected to a computer by an input / output port (191).
- FIG. 8 schematically describes the operating method according to the invention of a multi-localized sensor (in two parts) of the type described in FIG. 19b.
- the first place of sampling (L1) and the second place of revelation (L2) are merged into a common place of sampling / revelation (L1 / L2).
- a mobile sampling and revelation device (121) by mobile test cartridge (Car) is adapted from the sampling gun (34) by adding at least one reservoir (122) of chemical and / or biological reagent .
- the reservoir (122) here a strip of reagents and washing solutions adapted from the well strip (50) described in FIG. 12a, is connected to the test cartridge (Car) by the upstream sampling opening (111) the sampling cylinder head (102) via a fluid movement pump (115).
- the mobile test cartridge (Car) is then transferred to the measurement location (L3) in an independent measurement device (151) shown diagrammatically in FIG. 8.
- the cartridge (Car) is inserted into the internal cylindrical measurement recess (Eme ) of the measuring cylinder head (Cme) of thickness (epcm).
- the measuring yoke (Cme) has a diameter (Dm) substantially equal to but strictly greater than the cartridge diameter (De).
- the lateral transducer system 5 for integral measurement (T) is carried out an integral measurement of the variations of said extensive state variable (E), through both the substantially cylindrical outer lateral surface (Secm) of the circumference of the measuring yoke (Cme), the lateral wall (Cpl) of the test cartridge (Car), and the impermeable lateral face (slat) of the chamber of reaction (Cre).
- a mobile sampling device 100
- the sampling gun 34
- 25 reagents are provided as for the independent revelation and measurement device (160) described in FIG. 10.
- a variant of the preferred embodiment of the method of the invention, in the form of a multi-localized sensor suitable for processing automated of a large number of samples is shown in Figure 15, 15a and 15b, 16a and
- a sampling device which may be the sampling gun (34) described above, is used for sampling the sample fluid (F) from a test cartridge (Car).
- a robotic sequential analysis device (171) after removal by mobile test cartridge (Car) is based on a carousel (182). he
- 35 includes a rigid cartridge holder (172), comprising in the specific example 20 yokes (173 a , 173 b , 173 C9 173d, ...), positioned on the periphery of the carousel (182), separated by an angle at the top equal ( ⁇ ), here equal to 18 °, which constitutes the constant step (p) of spacing of the cylinder heads.
- ⁇ the top of the carousel
- Each cylinder head has an active sealing means (156) after insertion of the cartridge
- a means of periodic displacement of the carousel (182) here an electric motor, displaces the multitude of cylinder heads (173 a , 173 b , 173 c , 173 d , ...) by a spacing (p ') equal to said constant pitch (p) facing the same multitude of stopping points (181 a , 181 b , 18 l c , ...) by periodic rotation of the carousel (182) by an angle ( ⁇ ).
- Twenty mobile test cartridges (Car a , Car b , Car c , Car, ...) each including a reaction chamber (Cre a , Cre b , Cre c , Cre d , ...) in multi-micro spray - monolithic tubular, are inserted inside the multitude of cylinder heads (173 a , 173 b , 173 c , 173 d , ).
- the carousel (182) is equipped with a liquid injection device (201 a , 201 b , 201 c , ...) located opposite the stop point (s) (181 a , 181 b , 181 c , .
- This device is equipped with several independent tanks (195 a , 195 b , 195 c , ...) washing solutions and suspensions of reagents usable for several types of analytes, for example Salmonella, Legionella, Cryptosporidium.
- the protocols and the choice of reagents to be multi-channeled are carried out according to the indications provided by the identification label (83) with barcode of the proof cartridge (Car).
- the device comprises at least one physical measurement receiver (Rmp !
- Rmp 2 , Rmp 3 , ..., Rmp p , ...) [such as a magnetic field receiver (13)], positioned at a point of stop (181 a , 181 b , 181 c , ...), periodically mobile perpendicular to the movement of the cartridge holder (172), and periodically encasing the test cartridge located in front of it, at the stop point (181 a , 181 b , 18 l c , ...), intimately surrounding its outer surface.
- the physical measurement receiver (Rmpi, Rmp 2 , Rmp 3 , ..., Rmp p , ...) is the active part of a lateral transducer for integral measurement (T ⁇ , T 2 , T 3 , ..., T p , ).
- FIGS. 13a to 13d Another operating mode for the multi-localized evaluation of the concentration of elements-analytes (aj) of an analyte (A) is described in FIGS. 13a to 13d.
- the mobile test cartridge (Car) is successively plunged inside a succession of wells (51, 52, 53, 54) containing different fluids (55) such as sample fluid (F) and / or reagents and washing solutions.
- the test cartridges (Car a , Car b , Car c , ...) are inserted inside this device (200) which can accommodate several for simultaneous treatment, typically 16. It is also introduced inside the device of the multi-well bars (50) of the type described above, in an identical quantity to the test cartridges (Car a , Car b , Car c , ...), typically 16.
- a motor ensures lateral movement of the cartridge support test (Car a , Car b , Car c , ...) to move them from one well to another. It also ensures the vertical movement of the test cartridges (Car a , Car b , Car c , ...) to suck and discharge the fluids (55).
- test cartridges Car a , Car b , Car c , .
- the test cartridges and the strips must therefore all be of the same type, for example for the detection of Cryptosporidium.
- the test cartridges Car a , Car, Car c , (7) are introduced thanks to the engine into the measurement heads of lateral integral measurement transducers (TT 2 , T 3 , ..., T p , ...) as described above.
- Another variant of the preferred embodiment for the multi-localized evaluation of the concentration of analyte elements (aj) of an analyte (A) relates to the mobile device for sampling the fraction of sample fluid ( F).
- the sampling gun (34) is replaced by a sampling syringe (210).
- This single-use syringe is equipped with a test cartridge (Car) through which the sample fluid is multi-channeled by suction when its piston (202) is actuated.
- the syringe can be equipped for sampling the sample fluid (F), either with a needle (39) in FIG. 18a, or with a sampling cone (80) in FIG. 18b.
- the test cartridge is then withdrawn from the syringe to be treated according to the preferred mode of implementation or its variants presented above.
- FIG. 21 Another preferred embodiment in the form of a monoblock multi-analyte biosensor is presented in FIG. 21.
- it is used to simultaneously search for bacteria Cryptosporidium, the analyte (Ai), Escherichia coli, the analyte (A 2 ), and Legionella, the analyte (A 3 ), in a sample fluid (F) [here the water present in distribution pipes].
- F sample fluid
- It consists of a multi-stage reactor pipe (90).
- reaction chambers (Crei, Cre 2 , Cre 3 ) each consisting of a spray (18) d 'a plurality of micro-tubular channels (c p ⁇ , c p2 , ..., c pk , ..., c pn ) cylindrical.
- a fraction of the sample fluid (F) is multi-channeled inside the multi-stage reactor tube.
- the analyte elements (a P j), here the bacteria Cryptosporidium, Escherichia coli, or Legionella, are fixed, if there are any, specifically on the test surface: Cryptosporidium of the reaction chamber (Crei), Escherichia coli from the reaction chamber (Cre 2 ), Legionella from the reaction chamber (Cre 3 ).
- the multi-stage reactor pipe (90) is then supplied with a pump (223) via a three-way tap (221) of a mixture (Rj, R 2 , R 3 ) of grafted antibodies of specific super-paramagnetic microspheres (sp j ), (Ri) of Cryptosporidium, (R 2 ) ⁇ Escherichia coli, (R 3 ) of Legionella contained in a multi-reagent reservoir (222).
- the grafted antibodies specifically bind, (Ri) in the reaction chamber (Crei), (R 2 ) in the reaction chamber (Cre 2 ), and (R 3 ) in the reaction chamber (Cre 3 ).
- the multi-stage reactor pipe (90) is washed by passing water (F) through through the three-way valve (221).
- the disturbance measured in each reaction chamber (Crei, Cre 2 , Cre 3 ) by each lateral transducer system of integral measurement (Ti, T 2 , T 3 ) is related to the concentration of Cryptosporidium bacteria for (T ⁇ , of Escherichia bacteria coli for (T 2 ), Legionella bacteria for (T 3 ), present in the sample fluid (F).
- a variant of the test cartridge (Car) can be used. It is a multi test cartridge -chambre (Carm) which is illustrated in FIGS.
- reaction chamber 17a and 17b in perspective and in section It comprises at least two reaction chambers (Crei, Cre 2 , ...) in multi-micro-tubular spray, of identical section, positioned in the axis (zz '). These reaction chambers are covered by a single protective case (19).
- the multi-chamber test cartridges (Carm) are used for the simultaneous detection of at least two different analytes (Ai, A 2 , ...) present in the sample fluid (F).
- Each reaction chamber (C re ! , Cre 2 , ...) is specific to an analyte.
- the mode of use of the multi-chamber test cartridges (Carm) is largely inspired by that of the multi-stage reactor pipe (90).
- MCS multi-chamber test cartridge
- MCarm formed of a plurality of test cartridges (Curry, Car 2 , Car 3 , ...) conforming to the general description, arranged end to end. in series along the same axis (zz ') and nested one inside the other two by two according to FIG. 17c.
- the revelation and / or measurement devices must be adapted for this type of multi-chamber cartridges while respecting the spirit of the invention as described above.
- the main aim of combining monolithic reaction chambers in multi-micro-tubular spray with integral lateral transduction is to concentrate a large number of recognition events in a very compact test volume, and thus to be able to acquire from the outside of the test volume a homogeneous and sufficiently strong signal.
- the advantages are as follows:
- the receptor elements and analyte elements have a very strong affinity with a thermodynamic constant K of the order of 10 30 .
- K thermodynamic constant
- their connection, of the “key-lock” type requires perfect alignment, at a short distance, of the specific reconnaissance sites. To reduce, on average over the entire population of elements, the activation energy of the bond, and make it possible under normal conditions of temperature and solvent, it is necessary to increase the probability of this alignment at short distance.
- the micro-tubular geometry precisely minimizes the average test distance of the elementary portions of the flux to the test surface, and on the other hand, makes it possible to reduce the average test speed of the elementary portions of the flux to increase their stay near the test area;
- sample types can include various fluids such as blood, plasma, urine, saliva, milk, wine, beer, chemicals, liquid effluents, course water of water or taken from distribution channels, public or private.
- the sample can be prepared before analysis. If it is initially complex, solid, very viscous or gaseous, it can first be extracted, dissolved, diluted, in order to give it the physical characteristics compatible with its multi-channeling in the reaction chamber, and the chemical characteristics compatible with the stability of the test surface and of the recognition complexes (for example a pH of between 5 and 9).
- analytes can be detected using the methods and devices of the invention. These are all the analytes capable of being recognized and of forming a pair with a specific receptor.
- the analyte can be an antigen, even an antibody, or a hapten for smaller molecules like certain hormones. It can also be a nucleic acid (DNA or RNA) or an oligonucleotide, capable of hybridizing with the complementary nucleotide. It can also be an enzyme specific to certain substrates.
- antibiotics include food additives; microorganisms such as yeasts, single-cell algae, bacteria, viruses, prions, rickettsiae; toxins, dyes, pathogenic markers present in biological fluids, antibodies, active principles of drugs, cytokines, cell membrane surface proteins, etc.
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Abstract
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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CA002531237A CA2531237A1 (fr) | 2003-07-04 | 2004-07-01 | Procede et dispositif d'analyse chimique ou biologique par senseur a chambre monolithique en gerbe multi-micro-tubulaire et transducteur lateral de mesure integrale |
JP2006518278A JP4818912B2 (ja) | 2003-07-04 | 2004-07-01 | マルチマイクロチューブアレーの形態のモノリシックチャンバーと積分測定用ラテラルトランスデューサーを備えるセンサーによる化学的又は生物学的分析方法及び装置 |
EP04767549A EP1641565B1 (fr) | 2003-07-04 | 2004-07-01 | Procede et dispositif d'analyse chimique ou biologique par senseur a chambre monolithique en gerbe multi-micro-tubulaire et transducteur lateral de mesure integrale |
US10/563,055 US20060257956A1 (en) | 2003-07-04 | 2004-07-01 | Method and device for chemical or biological analysis by a sensor with a monolithic chamber in the form of a multi-microtubular sheaf and a lateral integration measuring transducer |
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FR03/08227 | 2003-07-04 | ||
FR0308227A FR2857099B1 (fr) | 2003-07-04 | 2003-07-04 | Procede et dispositif d'analyse chimique ou biologique par senseur a chambre monolithique en gerbe multi-micro-tubulaire et transducteur lateral de mesure integrale |
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WO2005011866A1 true WO2005011866A1 (fr) | 2005-02-10 |
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PCT/FR2004/001707 WO2005011866A1 (fr) | 2003-07-04 | 2004-07-01 | Procede et dispositif d’analyse chimique ou biologique par senseur a chambre monolithique en gerbe multi-micro-tubulaire et transducteur lateral de mesure integrale |
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US (1) | US20060257956A1 (fr) |
EP (1) | EP1641565B1 (fr) |
JP (1) | JP4818912B2 (fr) |
CN (1) | CN1845791A (fr) |
CA (1) | CA2531237A1 (fr) |
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CA3163215A1 (fr) * | 2019-12-30 | 2021-07-08 | Bradley Drews | Ensembles cuve a circulation t et vannes de selection de reactifs associees |
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CN113682317B (zh) * | 2021-03-05 | 2024-04-12 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | 一种电动汽车横向稳定性预测方法 |
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- 2004-07-01 EP EP04767549A patent/EP1641565B1/fr not_active Expired - Lifetime
- 2004-07-01 CA CA002531237A patent/CA2531237A1/fr not_active Abandoned
- 2004-07-01 WO PCT/FR2004/001707 patent/WO2005011866A1/fr active Application Filing
- 2004-07-01 CN CNA2004800250209A patent/CN1845791A/zh active Pending
- 2004-07-01 US US10/563,055 patent/US20060257956A1/en not_active Abandoned
- 2004-07-01 JP JP2006518278A patent/JP4818912B2/ja not_active Expired - Fee Related
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WO2002010761A1 (fr) * | 2000-07-28 | 2002-02-07 | Large Scale Proteomics Corporation | Microreseaux et leur fabrication par tranchage |
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Also Published As
Publication number | Publication date |
---|---|
JP4818912B2 (ja) | 2011-11-16 |
CA2531237A1 (fr) | 2005-02-10 |
JP2007516419A (ja) | 2007-06-21 |
FR2857099A1 (fr) | 2005-01-07 |
US20060257956A1 (en) | 2006-11-16 |
FR2857099B1 (fr) | 2005-10-07 |
EP1641565B1 (fr) | 2012-09-12 |
EP1641565A1 (fr) | 2006-04-05 |
CN1845791A (zh) | 2006-10-11 |
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