WO2009136085A2 - Dispositif et procede pour la formation de micro depots - Google Patents
Dispositif et procede pour la formation de micro depots Download PDFInfo
- Publication number
- WO2009136085A2 WO2009136085A2 PCT/FR2009/050631 FR2009050631W WO2009136085A2 WO 2009136085 A2 WO2009136085 A2 WO 2009136085A2 FR 2009050631 W FR2009050631 W FR 2009050631W WO 2009136085 A2 WO2009136085 A2 WO 2009136085A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tip
- needles
- reservoir
- tank
- needle
- Prior art date
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Classifications
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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
- B01L3/0241—Drop counters; Drop formers
- B01L3/0244—Drop counters; Drop formers using pins
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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
- B01L3/0241—Drop counters; Drop formers
- B01L3/0244—Drop counters; Drop formers using pins
- B01L3/0251—Pin and ring type or pin in tube type dispenser
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00277—Apparatus
- B01J2219/00351—Means for dispensing and evacuation of reagents
- B01J2219/00373—Hollow needles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00277—Apparatus
- B01J2219/00351—Means for dispensing and evacuation of reagents
- B01J2219/00387—Applications using probes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00277—Apparatus
- B01J2219/00497—Features relating to the solid phase supports
- B01J2219/00527—Sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/06—Valves, specific forms thereof
- B01L2400/0688—Valves, specific forms thereof surface tension valves, capillary stop, capillary break
-
- 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
- B01L3/5082—Test tubes per se
Definitions
- the present invention relates to the analysis of samples, and in particular methods and apparatus for forming multiple micro-deposits on surfaces from a sample. More specifically, the invention relates to a device for the formation of micro-deposits of a liquid sample, comprising a plurality of reservoirs and needles, providing controlled and regular formation of microdeposits in a defined pattern.
- micro-deposits of reagents on flat surfaces The possibility of carrying out several hundred multiplexed analyzes of the same sample, using micro-deposits of reagents on flat surfaces, is now widely demonstrated.
- the analysis of the genetic expression of the same sample makes particular use of micro-deposits of nucleotide sequences.
- Micro-antigen deposition also serves to highlight the antibodies of subjects in situations of infection or vaccination in the field of immunochemistry.
- Multiplexed sample analysis is currently confined to the field of research because of the cost and slowness of micro-deposit processes.
- a multiplexed analysis has many applications in the field of diagnosis.
- it is useful to be able to submit a multi-reagent sample.
- the same reagent must frequently be applied to a large number of separate samples.
- DNA is a small plate of glass, silicon or plastic, on which are deposited nucleic sequences which are characteristic of certain genes and which, in a mixture of molecules, by pairing with complementary nucleic sequences, make it possible to detect the presence of the same genes in cells under analysis.
- An apparatus for the manufacture of DNA chips has for example been described in the patent application EP 1618948.
- This apparatus comprises a tray with substrates, means for storing a solution and means for taking the solution and depositing it on these substrates.
- This document does not describe an apparatus comprising a plurality of reservoirs and needles and a raising-lowering device for penetration of the needles into the wells in the perpendicular direction, for the formation of micro-deposits of a liquid sample.
- micro-depositing machines are known for making DNA chips. These machines are designed to form deposition points or sample points on microscope slides. A number of glass slides in a microscope format (25 x 75 mm) are deposited on a tray. The solutions to be deposited are contained in a cell plate forming a reservoir. A depositing head sucks the solutions into the cell plate. The depositing head moves over the blades to pour the solutions there and is driven by a very precise X. Y. Z. mechanism.
- the diagnostic plate standard includes 96 wells distributed over eight rows and 12 columns with a pitch of 9 mm and a depth of 8 mm which makes it impossible to set up deposits with current machines.
- the size of the deposits is variable depending on the position of the blade.
- the decantation and evaporation of the solution to be deposited are not controlled, which causes the variation of its concentration.
- This machine performs repeated washing of the depositing head, which in practice leads to a loss of the order of 95% of the solution to be deposited.
- the invention aims to solve one or more of these disadvantages.
- the invention indeed provides methods and apparatus for micro-depositing a sample on a suitable support in a stable, reproducible and reliable manner.
- the invention makes it possible in particular to produce large series of micro-deposits and is applicable to any type of sample.
- the present invention relates to a device for forming micro-deposits of a liquid sample on a support (or on a surface), comprising a plurality of reservoirs and needles.
- the invention relates to a device for forming micro-deposits of a liquid sample, characterized in that it comprises:
- a reservoir for receiving a liquid sample to be deposited the bottom of the tank being provided with a through hole, the hole being sized to maintain the sample in the tank by capillarity;
- a needle having a tip mounted movable to a position where it passes through the hole to protrude outside the tank and cause a fraction of the sample out of the tank;
- the invention advantageously relates to a device for the formation of micro-deposits of a liquid sample on a support, characterized in that it comprises:
- the device further comprises:
- a support (91) for example a plate
- wells (92) are formed
- the control member comprises a raising-lowering device for penetration of the needles into the wells (92); said plurality of needles and the support (91) being subject to perpendicular relative movements.
- said plurality of reservoirs and needles is arranged so as to reproduce the pattern of microdeposits to be made, during the displacement of the support or the plurality of needles.
- the device of the invention further comprises one or more of the following features: the tip (34) is mounted movably between a position where it is housed inside the tank and said position where it is protrusion outside the tank; the hole is circular in shape and has a diameter of between 0.3 and 0.6 mm; the tip (34) has a diameter of between 0.10 mm and 0.3 mm; the tip has several successive portions of increasing sections starting from the free end of the tip (34); the reservoir (11) has a capacity of between 5 and 100 microliters, preferably between 5 and 50 microliters; the reservoir has a cylindrical bore in its upper portion (13), and a conical bore in its lower portion (14) joining the cylindrical bore to the through hole; the outer portion of the reservoir surrounding the through hole is covered with a hydrophobic coating; the weight of the needle (3) drives the tip to the position where it protrudes outside the reservoir, and the control member comprises a motor (52) and a lever
- the device comprises several reservoirs and associated needles, the reservoirs being separated by a single step.
- the lever drives the tips of said needles to the position where these points are housed inside their associated reservoirs;
- the reservoirs are formed in the same monoblock component (1);
- the device comprises a guide (2), and the needle comprises a body (32,33) overhanging and integral with the tip, the body being guided in translation by the guide (2);
- the guide (2) is integral with the reservoir (11);
- the reservoir (11) has a cylindrical outer wall screwed into a lower bore of the guide (2);
- the guide forms a shoulder (23) projecting radially beyond the outer wall of the tank (11);
- the device comprises a plurality of needles grouped in a checkerboard reproducing the pattern of micro-deposits to perform, a plate (91) in which wells (92) are formed, a raising-lowering device for penetration of the needles in the well (92), the plurality of needles and
- Another subject of the invention concerns a device comprising:
- micro-sample deposition device as defined above, placed vertically above supports placed on the conveyor downstream of the loading device, the device forming deposits on the supports in a manner synchronized with the training by the conveyor;
- a unloading device for supporting the conveyor, arranged downstream of the deposition device.
- Another subject of the invention relates to a process for the formation of deposits of a liquid sample on a support, comprising the application of the deposits by means of a device as defined above.
- the invention also relates to the use of a device as defined above for forming micro-deposits of one or more liquid samples on a support.
- the invention also relates to a method for producing media comprising sample microdeposits, the method comprising the application of microdeposits by means of a device as defined above.
- FIG 1 is a side sectional view of a first embodiment of a micro-deposit machine
- FIG. 2 is a schematic view from above of a deposit line on glass slides, using the machine of FIG. 1;
- FIG. 3 is a view from above of a second embodiment of a micro-deposit machine during its operation;
- FIGS. 4A and 4B are sectional side views of needles of the machine of FIG. 3 during different operating steps;
- FIG. 5 is a sectional view of the machine of FIG. 3 during its operation
- FIG. 6 is a fluorescence image of deposits made with a machine according to the invention.
- the present application relates to methods and devices for the formation of micro-deposits (or deposition points) of one or more samples on the surface of a suitable support.
- the invention is applicable to any type of liquid sample, that is to say in particular any solution or suspension, for example aqueous.
- the sample may be of a varied nature, for example a sample of a polypeptide (peptides, polypeptides, proteins, antibodies, etc.), nucleic (DNA, RNA, etc.), cellular, viral, lipidic or biological nature, etc.
- the invention allows the formation of microdeposits, that is to say typically deposits having a volume less than 50 ni, typically between 0.01 and 10nI, this amount being adjustable by those skilled in the art.
- the invention makes it possible to form deposits on any type of suitable support. It is preferably supports comprising a substantially flat surface (such as a blade, a membrane, a filter, etc.). It may also be supports having one or more flat surfaces separated by partitions, or a flat surface in which are formed cells, for example a multi-well plate.
- the support may be of any suitable material (glass, plastic, any compatible polymer, metal, silica, ceramic, coral, etc.). This is typically a multiwell plate, such as a 12, 24 or 96 well plate, or more. It can also be a glass slide.
- the device according to the invention comprises:
- each needle being associated with a reservoir and having a tip (34) movably mounted to a position where it passes through the hole to protrude outside its associated reservoir (11) and cause a fraction of the sample out of the tank;
- control member controlling the movement of the tip to said position; said plurality of reservoirs and needles being arranged to reproduce the pattern of the microdeposits to be made, when moving the carrier or the plurality of needles.
- the device furthermore comprises:
- a support (91) for example a plate) in which wells (92) are formed; and - the control member comprises a raising-lowering device for penetration of the needles in the wells (92); said plurality of needles and the support (91) being subject to perpendicular relative movements.
- the device can include a variety of reservoirs and associated needles.
- the term plurality typically refers to a number between 2 and 50, preferably between 4 and 50, more preferably between 9 and 50.
- the device comprises 2, 4, 6, 8, 9, 12, 15, 25 or 36 associated reservoirs and needles.
- the reservoirs and the needles are arranged in checkerboard or according to a predefined geometric matrix (for example a square or rectangular matrix) making it possible to reproduce the profile of the microdeposits and an in-line arrangement along a continuous industrial production line. , leading to the maintenance of parallel alignment of deposits by several remote devices.
- a predefined geometric matrix for example a square or rectangular matrix
- the tanks and the needles are arranged in checkerboard according to a square matrix 6x6, 5x5, 4x4 or 3x3.
- the tip (34) is mounted movably between a position where it is housed inside the tank and said position where it projects outside the tank, and / or has a diameter of between 0.10 mm and 0.3 mm, and / or has several successive portions of increasing sections starting from the free end of the tip (34).
- the hole intended to hold the sample in the tank, is circular in shape and has a diameter of between 0.3 and 0.6 mm.
- the invention also relates to a device in which the reservoir (11) has a capacity of between 5 and 100 microliters, preferably between 5 and 50 microliters.
- the tank according to the invention may have a cylindrical bore in its upper part (13), and a conical bore in its lower part (14) joining the cylindrical bore to the through hole.
- the outer portion of the reservoir surrounding the through hole may be covered with a hydrophobic coating.
- a particular aspect of the invention relates to a dipositive, wherein the weight of the needle (3) drives the tip to the position where it projects outside the tank, and wherein the control member comprises a motor (52) and a lever (53) actuated by the motor driving the needle to the position where the tip (34) is housed inside the tank.
- the control member comprises a motor (52) and a lever (53) actuated by the motor driving the needle to the position where the tip (34) is housed inside the tank.
- Another aspect relates to a device comprising several reservoirs and associated needles, the tanks being separated by a single pitch, the lever driving the tips of said needles to the position where these points are housed inside their associated reservoirs.
- the reservoirs are formed in the same monoblock component (1).
- Another object of the invention relates to a device comprising a guide (2), integral with the reservoir (11), wherein the needle comprises a body (32,33) overhanging and integral with the tip, the body being guided in translation by the guide (2).
- Said tank (11) may have a cylindrical outer wall screwed into a lower bore of the guide (2) and said guide may form a shoulder (23) projecting radially beyond the outer wall of the tank (11).
- a particular object of the invention relates to a device in which the needle forms a bulge (35) projecting radially inside the guide (2) under a bearing (21).
- the device according to the invention may further comprise a member for placing and withdrawing a support directly above the tip (34).
- Said device may also comprise: a drive conveyor (7) of supports (6) in a treatment direction; a device for loading (81) supports on the conveyor (7); a sample micro-deposition device (85) as defined above, placed vertically above supports placed on the conveyor downstream of the loading device, the device forming deposits on the supports in a manner synchronized with the drive by the conveyor; and
- a unloading device for supporting the conveyor, arranged downstream of the deposition device.
- the device of the invention can be equipped, in place of reservoirs and needles, with a plurality of conventional pipette-like heads with piezoelectric stripping of drops (for example "Piezoarray” Perkin-Elmer) or by micro-boiling (for example according to the method described in US Patent 5,551, 883), arranged as described above.
- a plurality of conventional pipette-like heads with piezoelectric stripping of drops for example "Piezoarray” Perkin-Elmer
- micro-boiling for example according to the method described in US Patent 5,551, 883
- Another subject of the invention relates to processes for the formation of deposits of a liquid sample on a support, which comprise the application of the deposits by means of a device according to the invention.
- the invention relates to devices for the formation of deposits from a liquid sample (for example an aqueous solution) contained in a reservoir.
- a feature of the devices of the invention lies in the fact that a through hole is formed in the bottom of the tank, the hole being sized to maintain the liquid sample in the tank by capillarity.
- the device comprises a needle tip adapted to drive the sample through the hole.
- the deposit forming device illustrated in FIG. 1 comprises a strip 7 for conveying glass slides 6.
- the successive blades 6 are arranged on the strip 7 with a predefined pitch, for example 35 mm.
- the blades 6 may for example be positioned in X. and Y. by means of a template.
- Two perpendicular faces of a blade 6 are in contact with two respective faces of a template.
- the strip 7 drives the blades 6 in the direction X.
- the device comprises a plate 1 overhanging the strip 7.
- Several tanks 11 are formed in the plate 1 and have a hole opening in their bottom. These tanks 11 are filled with solutions 12 to deposit in the form of deposits. Each hole is sized to maintain the solution in the tank 11 by capillarity.
- the reservoirs typically have a capacity of between 5 and 100 microliters, preferably between 5 and 50 microliters, even if this can be adapted by those skilled in the art, and variable from one reservoir to another.
- the plate 1 is overhung by a plate 4 which serves as a cover and a guide.
- the plate 4 is fixed in a detachable manner on the plate 1, for example to carry out maintenance operations or to facilitate the filling of the tanks 11.
- the plate 4 has threaded bores arranged vertically in line with respective reservoirs 11 of the plate 1.
- Guiding supports 2 are fixed in the bores of the plate 4.
- Needles 3 are guided in translation along the Z axis by the guiding support 2.
- the needles 3 have a tip 34 at their lower end, arranged at a distance from inside a respective tank 11 in the illustrated position.
- the device further comprises a lever 53 defining the travel in translation of the tip 34.
- this tip By lowering a tip 34 in the Z direction, this tip causes a fraction of the solution 12 present in the tank 11 through the opening hole, to deposit it on the glass plate 6 lying vertically.
- the invention makes it possible to produce a large number of deposits with a high rate of the solution 12 present in the tank 11, by limiting the evaporation of this solution 12.
- the tip 34 forms a piston passing through the hole of the tank 11 and thus avoids clogging.
- the tip 34 guarantees a high reproducibility of the formed deposits.
- solutions and needles 3 are isolated from the outside which eliminates the risk of contamination.
- the plate 1 has several reservoirs 11 intended to receive solutions 12 to be deposited on the glass slides 6. These tanks 11 may be made by machining a same metal plate. The tanks 11 are arranged with a pitch corresponding to the steps between the successive blades 6 on the strip 7.
- the tanks 11 and the strip 7 can be moved relative to one another in the direction Y, so as to form several deposits in the largest dimension of a glass plate 6.
- the plate 1 can in particular be motorized to be moved along the X and Y axes relative to the strip 7. Glass slides 6 each having up to 18 deposition zones surrounded by hydrophobic boundaries may be used.
- a bore is formed in each reservoir 11 and has an upper portion 13 of cylindrical shape, and a lower portion 14 of conical shape forming the bottom of the reservoir 11.
- the through hole is formed in the lower portion 14.
- the reservoir 11 will typically have a height of several millimeters, for example between 2 and 4 millimeters.
- the upper portion 13 will have a diameter of several millimeters.
- the opening hole in the lower part 14 advantageously has a diameter of between 0.3 and 0.6 millimeters. Such a diameter is sufficient to allow the passage of the particles present in the solution 12. For most solutions to be deposited, such a diameter of the hole keeps the solution 12 in the tank 11 without flowing, because of the capillary force. Thus, it is not necessary to resort to a complex mechanism of restraint of the solution.
- the lower part 14 of the reservoir 11 is advantageously covered by a hydrophobic coating, for example silicone or polytetrafluoroethylene.
- the guide support 2 is in the form of a hollow cylinder. It supports the upper and lower guide bearings of the needle, which are either machined in the mass or consist of inserts rings.
- the guide support is secured to the reservoir.
- the lower portion of the guide support is threaded and the reservoir is threaded. This mode is particularly suitable for the formation of microwall on multiwell plates, for example on 96-well plates. Indeed, with this type of support it is advantageous that the tank can move upwards to enter the well, which is obtained for example by suspending the needle.
- the outer surface of the lower portion of the guide support 2 is threaded and the reservoir is surmounted by a threaded bore.
- the lower part of the guide support is screwed into the corresponding threaded bore of the plate 4.
- the radial positioning and the translational guidance of the needle 3 are provided by means of the upper bearing 21 formed in the guide support and via the lower bearing 22 formed in the plate 4.
- the upper bearing 21 is produced in a shoulder formed in the upper portion of the guide support 2.
- the lower bearing 22 is formed in a shoulder formed in the bottom of a tapped bore of the plate 4. It could also be envisaged to make the lower bearing 22 in the support of This shoulder also forms a lid for the tank 11.
- the upper 21 and lower 22 bearings are separated by a distance of about 20 mm.
- the lower and upper bearings may be provided with a cylindrical ring of polytetrafluoroethylene.
- the needle 3 has a point 34 immersed in the solution 12 and whose lower end is intended to bring a fraction of this solution in contact with the glass slide 6.
- the tip 34 advantageously has a diameter of between 0.1 and 0.3 mm.
- the lower part of the tip 34 is preferably polished.
- the tip 34 is surmounted by a first translational guide portion 33.
- the tip 34 may have an increasing section between its free end and its junction with the first guide portion 33, to increase the agitation of the solution 12 and thus ensuring the homogeneity of this solution for the different deposits made.
- the tip 34 may also have several sections of different diameters and increasing starting from the free end to the first guide portion 33.
- the tip may include a particular section with a diameter of 0.3 mm joining the end
- This guiding portion 33 has a diameter of about 1 mm and is mounted in a sliding fit relative to the bearing 22.
- the first guide portion 33 is surmounted by a second guiding portion. in translation 32.
- the guide portion 32 has a diameter of about 4 mm and is mounted in a sliding fit relative to the bearing 21 of the guide support 2.
- the second guide portion 32 is surmounted by a stop 31 having a diameter greater than this second guide portion 32.
- the needle 3 may be made of stainless steel and have a weight of between 4 and 6 grams approximately.
- the needle 3 may have a height of between 30 and 50 mm.
- the surfaces of the needle 3 guided in translation by the bearings 21 and 22 are advantageously polished to limit friction. The friction forces during the translation of the needle 3 will advantageously be less than 0.01 N. Tests have been implemented with a needle 3 having the following dimensions:
- a tip 34 provided with a free end with a diameter of 0.15 mm and a height of 0.8 mm, and provided with a connecting part with a diameter of 0.3 mm and with a height of 3.2 mm; a first guide portion 33 having a diameter of 1 mm and a height of 17 mm;
- a second guide portion 32 having a first section of 2.32 mm diameter and 8.02 mm at the second and a section of 4 mm in diameter and 8 mm high;
- Such a needle 3 has proved very accessible and easily removable for cleaning.
- the accuracy of the centering of the needle 3 relative to the guide support 2, and the centering accuracy of the guide support 2 relative to the plate 4 maintains a clearance between the tip 34 and the through hole of the associated reservoir.
- This game will preferably be less than 100 ⁇ m. Proper centering of the needle will allow the position of the deposit to be defined with an accuracy of 50 ⁇ m.
- the device may comprise an agitator of the liquid sample to be deposited.
- a lever 53 defines the travel in translation of the needles 3. This lever 53 is pivotally mounted about two axes 51.
- the lever 53 is driven by a motor 52 associated with a cam.
- the cam has an eccentric projecting portion, supporting the lever 53. During a rotation of the protruding portion, the lever 53 will lower under the effect of its own weight. It will also be possible to use a ball bearing mounted to rotate eccentrically with respect to its axis, in order to limit wear.
- the motor 52 will limit the descent rate of the needle 3 to about 10 to 20 mm per second.
- the motor 52 may be controlled so as to ensure a contact time between the tip 34 and the glass plate 6 between 0.05 and 0.15 seconds.
- the contact time may in particular be defined by the difference between the stroke of the end of the lever 53 and the stroke of the needle 3.
- the needle 3 is driven downwards by its own weight.
- the lever 53 is then used to control the rate of descent of the needle 3.
- the lever 53 retains the needle 3 via the stop 31.
- the downward movement of the lever 53 can continue beyond the contact between the tip 34 and the glass slide 6, the contact force being then only defined by the weight of the needle 3, ensuring a great regularity of the support force on the glass slide 6.
- the translation stroke of the tip 34 will for example be between 4 and 7 mm.
- the lever 53 holds the tip 34 in the reservoir 11 until a deposit order.
- the lever 53 pivots to allow the descent of the tip 34 to come into contact with a glass slide 6.
- the tip 34 causes a drop of the solution 12 and then deposits it on the glass slide 6.
- the motor 52 continues its stroke so as to pivot the lever 53 in the opposite direction, so that the needle 3 is driven upwards via the stop 31 .
- the lever 53 is secured to the needle 3 by means of a spring. If the lever 53 is driven after the tip 34 has come into contact with the glass slide 6, the spring limits the contact force transmitted between the lever 53 and the tip 34.
- the head of the needle relies on the lever 53 by a conical support, so that the guide of the needle is provided by said lever 53, making unnecessary the guide support 2 which is then removed.
- the descent of the needle 3 can be defined by other control mechanisms.
- the descent can in particular be defined by means of a stepping motor, by means of a cam transforming a circular motion in linear motion, by a rack, or a worm gear device. It is possible to use a motor 52 of the step-by-step type with identification of the origin. According to one variant, a motor 52 of the asynchronous type is used, with the same position identification.
- FIG. 2 is a schematic view from above of a formation line 8 of deposits on glass slides 6, using a machine of the type detailed in FIG. 1.
- the deposition line 8 comprises a conveyor belt 7 traveling in a direction direction in which the glass slides 6 undergo treatments.
- the deposition line 8 comprises a device 81 for placing the glass slides 6 on the strip 7.
- the device 81 comprises cylinders 82 placing the glass slides 6 on the strip 7 at regular intervals.
- a washing ramp 83 is arranged in the race of the glass slides 6 between the device 81 and the strip 7.
- a drying device 84 is arranged downstream above the strip 7, so as to eliminate the residual water deposited by the washing ramp 83 on the glass slides 6.
- the deposit line 8 further comprises several depot depositing machines 85, of the type detailed previously.
- Each deposition machine 85 comprises a lever 53 pivotally mounted about an axis 51 and a motor 52 controlling the raising or lowering of the lever 53.
- Each lever 53 controls the ascents or descents of six needles 3 aligned in the direction of scrolling of the conveyor, as detailed previously.
- a template not shown in Figure 2, which blocks the blades to the exact position desired for the deposit.
- the deposition line 8 may have the number of needles necessary to deposit different solutions on a blade 6.
- a control member 86 analyzes the compliance of the deposits formed on the glass slides 6 downstream of the deposition machines 85.
- a handling device 87 comprises a cylinder 88 downstream of the control member 86.
- the cylinder 88 places the glass slides 6 in a housing storage unit 89 for receiving a multitude of glass slides 6.
- the strip 7 is driven to move the glass slides 6 in increments of distance corresponding to the pitch between the plates 6.
- the belt 7 of the conveyor can be replaced by a rigid, clawed or notched conveyor, which picks up and releases the blades in a cyclic motion, making them step and depositing them in a fixed jig where they will be held in a suitable position.
- Fig. 3 is a top view of another embodiment of a deposition machine using standard diagnostic plates.
- Diagnostic plates 91 comprise 96 wells 92 distributed over eight rows and twelve columns with a pitch of 9 mm, in accordance with the standards.
- the diagnostic plates 91 are arranged on a conveyor 94 capable of driving them in the X direction.
- the machine also comprises two rails 93 oriented in the Y direction.
- a head 95 is slidably mounted on the rails 93.
- An unillustrated motor positions the head 95 in the direction Y.
- the head 95 supports a plurality of reservoirs and needles 3 guided and arranged in a square matrix of 6 x 6 for example, so-called checkerboard layout.
- the needles 3 illustrated by solid circles are descended in vertical direction Z in wells 92.
- the needles 3 illustrated by empty circles have not descended into wells.
- the arrangement of the needles and the associated reservoirs reproduces the same pattern as that to be made for micro-deposits at
- Figures 4a and 4b show a needle 3 in two operating positions.
- the tip 34 is housed inside the tank 11 and is immersed in the solution 12.
- the tip 34 protrudes out of the tank 11 and causes a fraction. of the solution 12 to carry out a micro-deposit on a support.
- the needle 3 is slidably mounted in a guide support 2, similarly to Figure 1.
- the guide support 2 has in its lower part a threaded bore.
- the reservoir 11 has a cylindrical outer shape. The outer surface of the tank 11 is threaded. The reservoir 11 is screwed into the threaded bore of the guide support 2.
- the tanks 11 may have an outer diameter less than or equal to 8 mm.
- the stroke of the tip 34 beyond the through hole may for example be limited to 2 mm.
- the lower portion of the guide support 2 forms a shoulder 23 with respect to the outer surface of the reservoir 11. This shoulder 23 is used as a stop to limit the descent of the reservoir 11 inside a cell 92.
- the shoulder in which the lower bearing 22 is formed forms a cover above the tank 11.
- the needle 3 has a bulge 35 adapted to drive the upper shoulder when the needle 3 is raised.
- the needle 3, its guide and the through-hole may be slightly off-center with respect to the axis of the well so as to obtain a adequate spacing between deposits.
- FIG. 5 is a sectional view of the machine at wells 92 of a diagnostic plate 91.
- a deposition substrate such as a transparent sheet of glass or plastic 96 is placed in abutment against the bottom of the plate. 91.
- the substrate 96 is surmounted by a grid in which the wells 92 are formed.
- the machine has a control plate 54 provided with electromagnets 55a to 55e.
- the electromagnets 55a to 55e make it possible to retain or release respectively the needles 3a to 3e.
- the upper end of the needles 3a to 3e is held by the control plate 54.
- the upper end of the needles 3a to 3e is supported by a control plate 56.
- the reservoirs of the needles 3b to 3e are then arranged in the wells 92.
- the upper portion 97 of the grid is at a predefined height, and forms a stop for the shoulder 23 during the descent of the needles 3.
- the control plate 56 is vertically movable between an upper position shown in dashed lines, and a low position illustrated in solid lines. In its low position, the control plate 56 allows the descent of the needles until a tip 34 extends beyond the hole opening in its reservoir and forms a deposit on the substrate 96.
- the needle 3a is disposed outside the grid area, and the reservoir associated therewith is above a peripheral surface 98 of the plate 91. Moreover, the needle 3a and the 3rd needle are held in position raised by the electromagnet 55a. The shoulder 23 of the needle guides 3b to 3d is in abutment against the upper portion 97 of the grid plate. The reservoir and the guide of these needles are thus immobilized vertically. A descent control of the control plate 56 having been applied, the tip 34 of the needles 3b to 3d protrudes from their reservoir and comes into contact with the substrate 96 so as to form a micro-deposit. As in the example of Figure 1, the needles 3 come into contact with the substrate 96 under the effect of their own weight.
Landscapes
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2009245602A AU2009245602A1 (en) | 2008-04-11 | 2009-04-09 | Device and process for the formation of microdepositions |
CA2721047A CA2721047A1 (fr) | 2008-04-11 | 2009-04-09 | Dispositif et procede pour la formation de micro depots |
EP09742283A EP2276560A2 (fr) | 2008-04-11 | 2009-04-09 | Dispositif et procede pour la formation de micro depots |
JP2011503481A JP2011516875A (ja) | 2008-04-11 | 2009-04-09 | マイクロ堆積物を形成するための装置およびプロセス |
US12/936,959 US20110132109A1 (en) | 2008-04-11 | 2009-04-09 | Device and process for the formation of microdepositions |
IL208611A IL208611A0 (en) | 2008-04-11 | 2010-10-11 | Device and process for the formation of microdepositions |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0852466A FR2929859B1 (fr) | 2008-04-11 | 2008-04-11 | Dispositif et procede pour la formation de micro depots. |
FR0852466 | 2008-04-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2009136085A2 true WO2009136085A2 (fr) | 2009-11-12 |
WO2009136085A3 WO2009136085A3 (fr) | 2009-12-30 |
Family
ID=39929636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2009/050631 WO2009136085A2 (fr) | 2008-04-11 | 2009-04-09 | Dispositif et procede pour la formation de micro depots |
Country Status (8)
Country | Link |
---|---|
US (1) | US20110132109A1 (fr) |
EP (1) | EP2276560A2 (fr) |
JP (1) | JP2011516875A (fr) |
AU (1) | AU2009245602A1 (fr) |
CA (1) | CA2721047A1 (fr) |
FR (1) | FR2929859B1 (fr) |
IL (1) | IL208611A0 (fr) |
WO (1) | WO2009136085A2 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2854768C (fr) | 2011-11-10 | 2021-08-17 | David E. Jones | Chargement de flacons |
JP2018140336A (ja) * | 2017-02-27 | 2018-09-13 | Ntn株式会社 | 液体塗布ユニットおよび液体塗布装置 |
CN112534107B (zh) * | 2018-08-08 | 2022-06-10 | 盛势达技研株式会社 | 涂敷工具 |
JP2022074911A (ja) * | 2020-11-05 | 2022-05-18 | 国立大学法人浜松医科大学 | イムノクロマト検査キットの製造方法 |
EP4242657A1 (fr) * | 2020-11-05 | 2023-09-13 | National University Corporation Hamamatsu University School Of Medicine | Kit de dosage immunochromatographique |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5551487A (en) * | 1995-03-10 | 1996-09-03 | Hewlett-Packard Company | Micro-dispenser for preparing assay plates |
WO2000054883A1 (fr) * | 1999-03-15 | 2000-09-21 | Pe Corporation (Ny) | Dispositif et procede permettant de deposer des taches sur un substrat |
US20020173048A1 (en) * | 2001-04-26 | 2002-11-21 | Touji Nakazawa | Microarraying head and microarryer |
WO2002102514A1 (fr) * | 2001-06-19 | 2002-12-27 | B.C. Cancer Agency | Distributeur de microvolume de liquide conçu pour des micro-reseaux et procedes associes |
EP1618948A2 (fr) * | 1999-08-09 | 2006-01-25 | Thk Co. Ltd. | Dispositif de fabrication de micro-réseaux |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US196747A (en) * | 1877-11-06 | Improvement in stencil-pens | ||
US5516564A (en) * | 1993-04-28 | 1996-05-14 | Costar Corporation | Sterile irradiated hydrophobic pipette tip |
-
2008
- 2008-04-11 FR FR0852466A patent/FR2929859B1/fr not_active Expired - Fee Related
-
2009
- 2009-04-09 WO PCT/FR2009/050631 patent/WO2009136085A2/fr active Application Filing
- 2009-04-09 US US12/936,959 patent/US20110132109A1/en not_active Abandoned
- 2009-04-09 JP JP2011503481A patent/JP2011516875A/ja not_active Withdrawn
- 2009-04-09 EP EP09742283A patent/EP2276560A2/fr not_active Withdrawn
- 2009-04-09 CA CA2721047A patent/CA2721047A1/fr not_active Abandoned
- 2009-04-09 AU AU2009245602A patent/AU2009245602A1/en not_active Abandoned
-
2010
- 2010-10-11 IL IL208611A patent/IL208611A0/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5551487A (en) * | 1995-03-10 | 1996-09-03 | Hewlett-Packard Company | Micro-dispenser for preparing assay plates |
WO2000054883A1 (fr) * | 1999-03-15 | 2000-09-21 | Pe Corporation (Ny) | Dispositif et procede permettant de deposer des taches sur un substrat |
EP1618948A2 (fr) * | 1999-08-09 | 2006-01-25 | Thk Co. Ltd. | Dispositif de fabrication de micro-réseaux |
US20020173048A1 (en) * | 2001-04-26 | 2002-11-21 | Touji Nakazawa | Microarraying head and microarryer |
WO2002102514A1 (fr) * | 2001-06-19 | 2002-12-27 | B.C. Cancer Agency | Distributeur de microvolume de liquide conçu pour des micro-reseaux et procedes associes |
Also Published As
Publication number | Publication date |
---|---|
JP2011516875A (ja) | 2011-05-26 |
WO2009136085A3 (fr) | 2009-12-30 |
FR2929859B1 (fr) | 2012-10-19 |
EP2276560A2 (fr) | 2011-01-26 |
IL208611A0 (en) | 2010-12-30 |
AU2009245602A1 (en) | 2009-11-12 |
US20110132109A1 (en) | 2011-06-09 |
FR2929859A1 (fr) | 2009-10-16 |
CA2721047A1 (fr) | 2009-11-12 |
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