EP4164800A1 - Dispositif de support de tubes utilisés pour l'analyse d'échantillons par des techniques d'amplification d'acides nucléiques et procédé d'utilisation d'un tel dispositif - Google Patents
Dispositif de support de tubes utilisés pour l'analyse d'échantillons par des techniques d'amplification d'acides nucléiques et procédé d'utilisation d'un tel dispositifInfo
- Publication number
- EP4164800A1 EP4164800A1 EP21736644.2A EP21736644A EP4164800A1 EP 4164800 A1 EP4164800 A1 EP 4164800A1 EP 21736644 A EP21736644 A EP 21736644A EP 4164800 A1 EP4164800 A1 EP 4164800A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cover
- plate
- tubes
- tray
- chimneys
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- B01L9/00—Supporting devices; Holding devices
- B01L9/06—Test-tube stands; Test-tube holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L9/00—Supporting devices; Holding devices
- B01L9/54—Supports specially adapted for pipettes and burettes
- B01L9/543—Supports specially adapted for pipettes and burettes for disposable pipette tips, e.g. racks or cassettes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/02—Adapting objects or devices to another
- B01L2200/026—Fluid interfacing between devices or objects, e.g. connectors, inlet details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/02—Adapting objects or devices to another
- B01L2200/028—Modular arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/16—Reagents, handling or storing thereof
-
- 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
- B01L2300/04—Closures and closing means
- B01L2300/041—Connecting closures to device or container
- B01L2300/042—Caps; Plugs
-
- 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
- B01L2300/04—Closures and closing means
- B01L2300/041—Connecting closures to device or container
- B01L2300/044—Connecting closures to device or container pierceable, e.g. films, membranes
-
- 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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- 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—Rigid containers without fluid transport within
- B01L3/5082—Test tubes per se
Definitions
- the present invention relates to the technical field of devices used to handle tubes receiving biological samples to be analyzed.
- the device according to the invention relates generally to the process of samples with a view to their analysis, in the field of microbiology. It finds particularly advantageous applications to help the handling of tubes receiving biological samples to be analyzed by nucleic acid amplification techniques such as the Polymerase Chain Reaction (or "PCR") and similar processes.
- nucleic acid amplification techniques such as the Polymerase Chain Reaction (or "PCR") and similar processes.
- the techniques for amplifying nucleic acids are techniques well known in the prior art. These techniques and in particular PCR implement various steps to prepare and analyze biological samples, in particular steps of rehydration of reagents, of mixing of reagents with the sample, of centrifugation, of amplification and of detection.
- This technique uses tubes which are pre-filled with reagents and each closed with a stopper. These tubes are intended to receive the biological samples to be analyzed. These tubes are handled by suitable devices in order to carry out the various stages of this technique.
- document CN 107868752 describes a device comprising a support plate for sample tubes to be analyzed, intended to be supported by a base provided with a positioning base in an analysis machine.
- This device also comprises a cover provided with tabs intended to be fixed in a magnetic manner to the base, so that the support plate for the tubes is immobilized between the base and the cover.
- this cover is provided with passage holes for a tip of a pipette, arranged in correspondence of the tubes.
- US Pat. No. 7,329,393 describes a device for supporting sample tubes to be analyzed, suitable for undergoing a centrifugation operation.
- a device comprises a cover intended to be fixed to a base by a screw assembly system and between which are interposed a tube receiving plate and a support block. If such a device allows efficient maintenance of the tubes when they undergo the centrifugation operation, the assembly and disassembly operations prove to be relatively long to carry out. It follows that the use of such a device is limited in practice to this centrifugation operation. Moreover, such a device does not provide a solution to the problem of depositing samples inside the tubes.
- Patent application US 2015/0132841 describes an assembly comprising a support for receptacles receiving samples to be analyzed and a cover provided with openings arranged in a similar distribution to the receptacles.
- the cover is assembled temporarily to the support using fixing elements such as elastically deformable arms rising from the support and coming to cooperate with projections carried by the cover.
- Such an assembly makes it possible to hold the containers in position.
- such an assembly does not provide a solution to the problem of depositing samples inside the containers.
- An object of the invention is to remedy the drawbacks of the prior art by providing a support device for tubes intended to receive the reagents necessary for an amplification reaction and biological samples to be analyzed, such a device being able to be implemented in a simple and efficient manner for various preliminary operations or during an amplification reaction.
- An object of the invention is to provide a support device for tubes receiving reagents necessary for an amplification reaction and biological samples to be analyzed, designed to immobilize the tubes in a simple and safe manner even during a centrifugation operation while making it possible to secure the deposition operation inside the tubes.
- the object of the invention aims to provide a device comprising:
- this plate for tubes receiving samples to be analyzed and in which the tip of a pipette is intended to be inserted, this plate comprising a plate having an upper face and a lower face and holes arranged according to a determined distribution opening out into these two faces and each adapted to receive a tube resting on the upper surface and with its bottom projecting from the underside of the plate, the plate of the plate being delimited by two longitudinal flanged edges parallel to each other and connected to each other by two transverse fallen edges parallel to each other;
- a cover comprising a plate having an upper face and a lower face, provided with chimneys arranged according to a distribution similar to the distribution of the holes in the plate and provided with stops limiting the indentation for pipette tips, the cover plate being delimited by two longitudinal flanged edges parallel to each other and connected between them by two transverse fallen edges parallel to each other;
- the tray and the cover comprising a removable assembly system comprising two elastically deformable tabs arranged in the flanged edges of the cover and each cooperating with a complementary housing provided in each of the flanged edges of the tray to achieve an elastic fitting, when the cover occupies a position of superposition above the plate and resting by its fallen edges on the plate to form a unitary assembly for retaining the tubes and positioning the stacks above the tubes to serve to guide the pipette tips entering the interior tubes and their stop by the stops so that the distal end of the tip of the pipette comes substantially to the inner wall of the bottom of the tubes.
- the cover is designed to occupy a position of superposition below the plate to place the chimneys so that they ensure the maintenance of the bottom of the tubes projecting from the underside of the plate.
- the device according to the invention may further include in combination at least one and / or the other of the following additional characteristics;
- the top and the cover are made of translucent or transparent materials
- the fallen edges of the cover and the fallen edges of the tray include interlocking parts intended to be nested together so that when the cover is assembled with the tray while being above the tray, the imprint of the cover delimited by its fallen edges is equal to the footprint of the tray delimited by its fallen edges; - Interlocking parts of the cover and of the tray are fitted with a keying system to ensure a mounting direction of the cover on the tray;
- the cover comprises, from its upper face, a centering system for the tray resting by its fallen edges on the cover, the height of the fallen edges of the tray being adapted to ensure the engagement of the chimneys over part of the height tubes from their bottom;
- the centering system is set back from the fallen edges of the cover to receive the fallen edges of the tray so that the imprint of the cover delimited by its fallen edges is equal to the imprint of the tray delimited by its fallen edges;
- the chimneys of the cover include stops for limiting the depression of the tips of the pipettes so that the tips come substantially to the inner wall of the bottom of the tubes;
- the chimneys each define an opening having, from the upper face of the cover, a section of frustoconical shape opening through its largest section, on the upper face of the cover to serve as a guide for the tip of the pipettes;
- the plate comprises support ribs projecting from the upper face of the plate to serve as a support for a support element of an analysis machine.
- Another object of the invention is to provide a method of using a device according to the invention in the context of a process carrying out amplification of nucleic acids.
- the object of the invention aims to provide a method of using a device according to the invention, in the context of a process carrying out an amplification of nucleic acids, implementing tubes intended for receiving biological samples for analysis, the process consisting of:
- tubes pre-filled with a lyophilized or liquid reagent pre-filled with a lyophilized or liquid reagent and each closed by a stopper provided with a slot allowing by elastic deformation, the passage of a tip of a pipette, the stopper resting on the upper surface of the plate;
- the method consists:
- a film capable of being perforated by a tip of a pipette is interposed between the caps and the cover, before the assembly between the plate and the cover, so as to serve as a filling indicator tubes with the aqueous solution.
- a film capable of being perforated by a tip of a pipette is placed on the upper surface of the chimneys of the cover.
- the unitary assembly for maintaining the tubes between the cover and the plate is introduced into a centrifugation machine, in particular vertical to ensure an operation of centrifugation of the contents of the tubes.
- the tray is placed in a position of superposition above the cover so as to engage the bottom of the tubes projecting from the underside of the tray in the chimneys of the cover so that they ensure the maintenance of the tubes;
- the tube caps are removed to be replaced by optical caps to allow an operation to amplify the nucleic acids contained in the tubes;
- the process consists of:
- Figure 1 is a perspective of the device according to the invention illustrated in a first configuration in which the tube support plate is located below a cover.
- Figure 2 is a perspective view showing the underside of the tube support plate of the device according to the invention.
- Figure 3 is a perspective view showing the underside of the cover of the device according to the invention.
- Figure 4 is a perspective of the device according to the invention illustrated in a first assembled position of superposition in which the cover is located above the support plate of the tubes.
- Figure 5 is an elevational sectional view taken substantially along the line V of Figure 4 and showing a detail of the unitary assembly constituted by the assembly of the cover and the support plate of the tubes.
- Figure 6 is a plan view of the device according to the invention illustrated in Figure 4 in the second assembled position of superposition and of which three pipette tips are introduced into tubes.
- Figure 7 is a sectional view of the device according to the invention in the second assembled position of superposition, taken substantially along the lines VII-VII of Figure 6.
- Figure 8 is a perspective of the device according to the invention illustrated in a second configuration in which the cover is located below the support plate for the tubes.
- Figure 9 is a perspective of the device according to the invention illustrated in a second assembled superimposed position in which the tube support plate is located above the cover.
- Figure 10 is a partially sectional perspective of the device according to the invention illustrated in the second assembled stacked position in which the tube support plate is located above the cover.
- the object of the invention relates to a device 1 intended to be used advantageously in the context of a nucleic acid amplification process such as a Polymerization Chain Reaction or analogue, implementing tubes 2 intended to receive biological samples to be analyzed and reagents necessary for an amplification reaction.
- Each tube 2 is pre-filled with a lyophilized reagent or a liquid reagent.
- reagent is meant any substance or mixture of substances necessary for the implementation of an amplification reaction.
- the reagents are enzymes, nucleotides, primers, probes and other components necessary for amplification.
- sample a small part or small amount separated from an entity by a subtractive act usually called sampling, for analysis purposes.
- the sample can be of human, animal, plant or environmental origin. It can correspond to a sample of biological fluid (whole blood, serum, plasma, urine, cerebrospinal fluid, organic secretion), a tissue sample or isolated cells. It can be of industrial origin, or, according to a non-exhaustive list, an air sample, a water sample, a sample taken from a surface, a part or a product being processed or manufactured, a product from food origin.
- This sample may optionally have undergone a preliminary treatment, involving for example lysis, mixing, dilution or even grinding steps, in particular if the starting entity is in the solid state.
- the sample deposited in the tubes can therefore be in liquid form.
- the biological sample analyzed is, in general, likely to - or suspected of - containing at least one target microorganism.
- Each tube 2 has a tubular body 2t, the lower part of which is closed so as to have a bottom 2f from this closed lower end.
- Each tube 2 has an upper part 2s adapted to be fitted with a plug 3 for sealing the tube.
- This stopper 3 is provided with a slot 4 adapted to allow, by elastic deformation, the passage of a tip 5 of a pipette for injecting a liquid solution inside the tube 2.
- the device 1 comprises a support plate 7 for the tubes 2 having an upper face 7s and a lower face 7i ( Figures 2 and 8).
- This plate 7 has holes 8 arranged to open into the upper face 7s and the lower face 7i.
- Each hole 8 is adapted to receive as illustrated in Figures 6, 7 and 10, a tube 2 inserted inside the hole 8 and resting on the upper surface 7s of the plate while the bottom 2f of the tube protrudes from the lower face 7i of plate 7 ( Figure 7).
- the holes 8 are arranged in the plate 7 according to a determined distribution.
- the holes 8 are arranged in rows and columns.
- the plate 7 comprises eight rows of holes 8 referenced from A to H and twelve columns of holes 8 referenced from 1 to 12, that is to say 96 holes.
- the device 1 also comprises a cover
- the cover 10 having an upper face 10s and a lower face 10i, and provided with chimneys 11 internally delimiting openings 12 each opening onto the upper surface 10s and the lower surface 10i of the cover ( Figures 1 and 3).
- These chimneys 11 or openings 12 are arranged according to a distribution similar to the distribution of the holes 8 of the plate 7 so that in position of superposition of the plate 7 and the cover 10, the holes 8 of the plate 7 coincide or are aligned with the openings 12 of the chimneys 11.
- the cover 10 comprises eight rows of chimneys 11 referenced from A to H and twelve columns of chimneys 11 referenced from 1 to 12, that is to say 96 chimneys.
- the cover 10 and the plate 7 are adapted to cooperate together in a first stacking or stacking position and also, advantageously in a second stacking or stacking position, each suitable for placing implementation of specific steps in the process of analyzing the biological samples contained in the tubes.
- the cover 10 is designed to occupy at least one superimposed position above the tray 7 so as to be removably assembled to the tray to form a unitary assembly for retaining the tubes by the underside of the cover and to position the chimneys 11 at the top. -above the tubes to be used for guiding the pipette tips ( Figures 1, 4, 5, 6, 7).
- the cover 10 is designed to occupy a second position corresponding to a position of superposition of the cover 10 below the plate 7, in which the chimneys 11 are placed so as to ensure the maintenance of the bottom of the tubes. projecting from the underside 7i of the plate 7 ( Figures 8, 9, 10).
- the plate 7 and the cover 10 have a rectangular shape.
- the plate 7 comprises a plate 7p delimited by two longitudinal flanged edges 71 parallel to each other and connected to each other by two transverse flanged edges 7t parallel to each other ( Figure 2).
- the plate 7p of the tray is thus provided along its entire periphery, with dropped edges 71, 7t forming a continuous edge projecting from the lower face 7i of the tray.
- the plate 7 is intended to rest on a laying plane S by the rim of this continuous border so that advantageously, the height of the dropped edges 7t, 71 forming this border is substantially higher than the length of the tubes 2 making protrusion of the underside 7i of the tray when the tubes 2 are supported by the tray ( Figure 7).
- the plate 7 comprises support ribs 7n projecting from the upper face 7s of the plate to ensure a homogeneous support for a support element of an analysis machine. As will be explained in detail in the remainder of the description, these support ribs 7n serve as angular compensation when the distribution of the tubes 2 is heterogeneous on the plate 7. As illustrated in FIG. 8, the support ribs 7n protrude from the upper face 7s of the tray near and parallel to the two transverse flanged edges 7t of the tray.
- the cover 10 comprises a lOp plate delimited by two longitudinal flanged edges 101 parallel to each other and connected to each other by two transverse flattened edges parallel to each other ( Figures 1 and 3).
- the plate 10p of the cover 10 is thus provided along its entire periphery with flanged edges 101, the lut forming an edge projecting from the underside 10i of the cover.
- This edge delimited by the flanged edges 101, 10t has a lOr edge intended to bear on the upper face 7s of the plate 7 when the cover 10 occupies the position of superposition above the plate 7.
- the cover 10 is in support on the plate 7 by its fallen edges 101, 10t.
- the lower face lOi of the cover has a flat surface while the upper face 10s of the cover is provided with the chimneys 11.
- the chimneys 11 protrude from the plate 10p of the cover.
- the plate 10p of the cover has a constant thickness and each chimney 11 is formed by the wall delimiting the opening 12 and the height of which corresponds to the thickness of the plate 10p of the cover 10.
- each chimney 11 defines by its internal wall, a guide surface for the tip of a pipette during the operation of depositing a liquid inside the tube.
- Each opening 12 of a chimney 11 thus has a section and a shape adapted to ensure this guiding function.
- each opening 12 of a chimney 11 has from the upper face 10s of the cover, a frustoconical section 11a opening through its largest section, on the upper face 10s of the cover .
- this frustoconical section 11a is extended by a tubular section 11b opening onto the lower face 10i of the cover 10.
- the frustoconical section 11a of the chimneys is adapted to also ensure the engagement of the bottom of the tubes 2 which generally also has a frustoconical section (Figure 10).
- the chimneys 11 of the cover 10 include stops 11c for limiting the sinking of the tips 5 of the pipettes so that the tips come substantially to the inner wall of the bottom of the tubes ( Figure 7).
- the stops 11c are arranged on the cover 10 so that in the support position of the cover 10 on the plate 7, the distal end of the tip 5 of the pipette arrives, at the end of the stroke. engagement, near the bottom wall of the tube as shown in Figure 7.
- the position of the stops 11c relative to the bearing flange lOr is such that in position of superposition of the cover 10 above the plate 7, the distal end of the tip 5 of the pipette is located near the bottom wall of the tube.
- the stops 11c are formed by the upper rim of the ducts 11 on which the fins 5a of the tips 5 of the pipettes come into contact.
- the distal end of the tip 5 of the pipette is located near the bottom wall of the tube, when the cover 10 occupies its first position of superposition resting on the plate 7
- the positioning of the distal end of the tip 5 of the pipette near the bottom wall of the tube thus makes it possible to secure the operation of depositing the liquid inside the tube 2.
- the plate 7 and the cover 10 are made of translucent or transparent materials.
- the plate 7 and the cover 10 are generally made of polycarbonate, but could also be of polypropylene, high density polyethylene.
- the plate 7 and the cover 10 comprise a removable assembly system 13 allowing the cover 10 and the plate 7 to be secured together to form a unitary assembly for retaining the tubes 2.
- the cover 10 occupies a position of superposition above the plate 7, with the cover 10 which rests on the plate 7 and with the plate 10p of the cover located above the plate 7p of the plate.
- the removable assembly system 10 is also suitable so that the cover 10 and the tray 7 can be easily detached so that they can be handled independently and positioned, for example, to occupy another stacked position.
- the removable assembly system 13 can be produced in any suitable manner. In the preferred embodiment illustrated in the drawings, the removable assembly system 13 is of the elastic fitting type.
- the plate 7 and the cover 10 comprise, as a removable assembly system 13, two tabs 13a arranged in the preferably transverse fallen edges 10t of the cover 10 and each cooperating with a complementary housing 14 provided in each of the transverse fallen edges 7t of the plate 7 to achieve an elastic fitting.
- each transverse flanged edge 10t of the cover 10 comprises two cutouts 10tf delimiting between them an elastically deformable tab 13a.
- Each tab 13a is provided at its free end, on its internal surface, with a rib 13b intended to engage in the complementary housing 14 which delimits a stop surface 14a for the rib 13b (FIG. 5).
- the flanged edges lOt, 101 of the cover 10 and the flanged edges 7t, 71 of the plate 7 comprise interlocking parts respectively lOtm, lOtf, 101m, lOlf and 7tm, 7tf, 71m, 7lf intended to be nested together so that, when the cover 10 is assembled with the plate 7 while being above the plate 7, the imprint of the cover 10 delimited by its fallen edges 10t, 101 is equal to the imprint of the plate 7 delimited by its fallen edges 7t, 71.
- the unitary assembly constituted by the cover 10 and the plate 7 is a solid parallelepiped with flat side surfaces formed by the fallen edges 10t, 101 of the cover aligned with the flanged edges 7t, 71 of the tray.
- each longitudinal flanged edge 71 of the plate 7 comprises two so-called female interlocking parts 7lf formed by housings formed in the longitudinal flanged edges 71 and produced on either side of a so-called interlocking part male 71m.
- Each longitudinal flanged edge 101 of the cover 10 has two so-called male interlocking parts 101m delimited on either side by a so-called female interlocking part lOlf produced by a cutout.
- the two male interlocking parts 101m and the female interlocking part 10lf of each longitudinal flanged edge 101 of the cover 10 are intended to interlock respectively in the two female interlocking parts 7lf and in the male interlocking part 71m of each transverse edge 7t of the plate 7.
- the female interlocking parts lOlf and the male interlocking parts 101m of the cover have shapes that are congruent or complementary respectively to the male interlocking parts 71m and to the female interlocking parts. 7lf tray 7.
- each transverse flanged edge of the cover 10 comprises two so-called female interlocking parts lOtf formed by the cutouts made on either side of a male interlocking part produced by the tab 13a, these cutouts 15 leaving up to each corner, a male interlocking part lOtm.
- the two female interlocking parts 10tf and the three male interlocking parts 13a, 10tm of each transverse flanged edge of the cover 10 are intended to interlock respectively in two male interlocking parts 7tm and in three interlocking parts 7tf females of each transverse flanged edge 7t of the plate 7.
- the three female interlocking parts 7tf of each transverse flanged edge 7t of the plate 7 are, for example, housings provided in these transverse fallen edges 7t of the plate 7.
- the parts female interlocking lOtf and the male interlocking parts 13a, lOtm of the cover 10 have shapes that are congruent or complementary respectively to the male interlocking parts 7tm and to the female interlocking parts 7tf of the plate 7.
- the male interlocking portions 101m of the longitudinal flanged edges and the male interlocking portions 13a, lOtm of the transverse flanged edges 10t of the cover 10 protrude from from the edge lOr of the flanged edges and over only part of the width of this edge so that the rim lOr remains in line with the male interlocking parts (Figure 3).
- the cover 10 thus presents by its fallen edges, a flange lOr extending so substantially continuous over the entire periphery of the plate 10p making it possible to obtain a stable support of the cover 10 on the plate 7.
- the interlocking parts of the cover 10 and of the plate 7 are fitted with a keying system to ensure a mounting direction of the cover on the plate.
- the two female fitting parts 7lf of a longitudinal flanged edge of the plate 7 and consequently the two corresponding male fitting parts 101m of the cover are arranged asymmetrically.
- the length taken along a longitudinal edge of a female engagement part 7lf of the plate is different from the length of the other.
- female interlocking part 7lf of the plate (respectively of the other male interlocking part 101m).
- Such an asymmetrical embodiment of the interlocking parts allows the cover 10 to be mounted on the support 7 in one direction only.
- the cover 10 is designed to occupy a second stacking position corresponding to a position of superposition of the cover 10 below the plate 7 ( Figures 8, 9 and 10).
- the plate 7 bears on the upper face 10s of the cover 10, by the rim of its flanged edges 7t, 71.
- the cover 10 has from its upper face 10s, a centering system 17 for the plate 7 so that the cover 10 and the plate 7 are secured together at least in a horizontal plane.
- the centering system 17 is arranged so that the imprint of the cover 10 delimited by its fallen edges lout, 101 is equal to the imprint of the plate 7 delimited by its fallen edges 7t, 71.
- the longitudinal flanged edges 101 and transverse 10t of the cover 10 are located directly above or in the extension, respectively, of the longitudinal 71 and transverse flanged edges 7t of the plate.
- the centering system 17 is recessed from the flanged edges of the cover 10 to receive the flanged edges of the tray 7 so that the flanged edges 10t, 101 of the cover 10 are aligned with the flanged edges 7t, 71 of the tray 7.
- the centering system 17 comprises a groove 17a formed from the upper face 10s of the cover 10, opening at the periphery of the plate 10p of the cover to allow the engagement of the flanged edges longitudinal 71 and transverse 7t of the plate.
- This groove 17a thus defines a centering rim 17b for the longitudinal 71 and transverse 7t flanged edges of the plate.
- this centering rim 17b can be extended at times, at the level of each corner of the cover 10, by centering studs 17c projecting from the upper face of the cover 10.
- the centering rim 17b of the cover 10 can have a section adapted to achieve, with the section delimited by the internal surface of the fallen edges of the plate 7, a tight fit leading to complete securing of the plate 7 with the cover 10.
- the tray 7 and cover 10 thus form a unitary assembly in this second stacking position.
- the height of the fallen edges 7t, 71 of the plate 7 is adapted to ensure the engagement of the chimneys 11 of the cover over part of the height of the tubes 2 from their bottom ( Figure 10).
- the engagement of the tubes 2 by their bottom inside the openings 12 of the chimneys 11 ensures a centering of the tubes avoiding their tilting, in particular during the execution of various interventions on the tubes and / or the plugs, as will be explained in detail in the rest of the description.
- the device 1 according to the invention comprises two separate elements which can be secured together in two different stacking positions to allow the handling of the tubes with a view to ensuring the accomplishment of various stages of treatment of biological samples, contained in these tubes. It should be noted that such devices 1 can be stacked or stacked on top of each other in one or the other stacking position.
- the device 1 according to the invention is particularly suitable for use in the context of a process carrying out an amplification of nucleic acids such as the Polymerization Chain Reaction or the like, using tubes 2 intended for receive biological samples for analysis. Each tube 2 can be pre-filled with a lyophilized or liquid reagent.
- each tube 2 may also have undergone one or more processing steps, such as a lyophilization operation.
- Each tube 2 thus pre-filled is closed using a stopper 3 provided with a slot 4 allowing, by elastic deformation, the passage of a tip 5 of a pipette.
- the method of implementing the device 1 consists of:
- the tubes 2 pre-filled with a reagent and each closed by a stopper 3 provided with a slot and resting on the upper surface 7s of the plate 7;
- the assembly of the cover 10 to the plate 7 is carried out in a simple manner by bringing the cover 10 closer to the plate 7.
- the elastic tabs 13a are elastically deformed outwardly until the ribs 13b of the elastic tabs 13a penetrate into the housings 14 to be blocked by the stop surfaces 14a of the plate 7. It should be noted that during this assembly operation, the cover 10 is guided in sliding on the plate 7 by the cooperation of the interlocking parts of the cover 10 with the interlocking parts of the plate 7.
- the lower face lOi of the plate lOp of the cover 10 is positioned above the caps of the tubes 2 supported by the plate 7 to hold them in position.
- the cover 10 rests on the plate 7, by the rim lOr of its fallen edges 101, 10t.
- the tubes 2 are immobilized or blocked, between the plate 7 and the cover 10 and the chimneys 11 of the cover 10 are positioned above the tubes 2 ( Figure 7).
- the next step in the preparation of a sample for a Polymer Chain Reaction or the like consists in introducing the tip 5 of a pipette for injecting a liquid through the ducts 11 of the cover and the slots 4 of the plugs 3 so as to open inside the tubes 2 ( Figures 6 and 7).
- the ducts 11 guide the operator to correctly position the tip of the pipette to ensure its introduction inside the tubes 2, Indeed, the operator introduces into the opening 12 of the tubes.
- chimneys 11, the nozzle 5 which is guided throughout its travel, namely in approach of the stopper 3 by the frustoconical portion 11a, during its penetration into the slot 4 of the stopper which is elastically deformed, and at the inside of tube 2.
- the stroke of the pipette is limited by the stops 11c of the stacks 11 so that the distal end of the tip of the pipette is located near, or even in contact with, the wall of the bottom of the tube.
- the tip of the pipette is ideally positioned near the wall of the tube so as to ensure the operation of depositing the liquid inside the tube 2. This deposit operation which is a delicate operation to carry out since the liquid to be deposited is generally a drop of small volume, typically 5 to 10 microliters, is thus secured.
- the operator After having delivered the liquid in the tubes 2 using the pipette, the operator removes the tip of the pipette, the tubes 2, the caps 3 and the stacks 11.
- the liquid delivered is the sample .
- a reagent necessary for amplification can also be added.
- a film capable of being perforated by a tip of a pipette is placed on the cover 10 so as to serve as an indicator of the filling of the tubes 2 with the liquid.
- This film can be placed on the upper surface of the chimneys 11 of the cover 10.
- a film capable of being perforated by a tip of a pipette can be interposed between the caps 3 and the cover 10, so to serve as an indicator of the filling of the tubes 2 with the liquid.
- This film not shown in the drawings, can be deposited directly on the upper surface 7s of the plate provided with the stoppers 3.
- This unitary assembly with the tubes 2 immobilized between the cover 10 and the plate 7 can be introduced into a centrifugation machine of all types known per se to ensure a centrifugation operation of the contents of the tubes 2.
- the device 1 can be loaded into a vertical centrifugation machine without risk of leaks from the tubes.
- the compact nature of the device 1 facilitates the loading and unloading operations of the device 1.
- the content of the tubes 2 is intended to undergo a reaction for amplifying the nucleic acids contained in the tubes using an analysis machine of all types known per se , conventionally a thermal cycler.
- the plugs 3 closing off the tubes 2 are replaced by optical plugs before the operation of analyzing the contents of the tubes.
- the cover 10 is separated from the plate 7 and deposited on a laying plane S.
- This operation is relatively easy to carry out since it suffices to remove the elastic tabs 13a to release the ribs 13b of the housing 14 and lifting in a translational movement, the cover 10 relative to the plate 7.
- the plate 7 is placed in a superimposed position above the cover 10 so as to engage the bottom of the tubes projecting from the underside of the tray in the chimneys 11 of the cover so that they ensure the maintenance of the tubes.
- each bottom of the tubes 2 is engaged in the opening 12 of the chimneys 11 avoiding any tilting movement during the operation of removing the caps replaced by optical caps for the carrying out the operation of analyzing the contents of the tubes. It should be noted that the operation of analyzing the contents of the tubes can be carried out without changing the caps 3 provided with a slot and initially sealing the tubes.
- the unitary assembly consisting of the support plate 7 for the tubes 2 assembled with the cover 10 is loaded into the analysis machine.
- the plate 7 is released from the cover 10 so that the cover 10 can be placed above the plate 7 and secured together using the removable assembly system. 13 as already explained.
- This unitary assembly makes it possible to load easily and in complete safety all the tubes 2 into the analysis machine.
- the cover 10 of the device 1 is removed from the plate 7 so as to allow the heating of the tubes 2 and the analysis operation.
- a support element of the analysis machine such as its cover maintains the tubes 2 against the plate 7 while ensuring good contact of the tubes with the heating block of the analysis machine and in particular with the wells. reception of the tubes arranged in the heating block.
- the cover of the analysis machine comes into contact with the support ribs 7n of the plate 7. The operation of amplifying the nucleic acids contained in the tubes 2 can therefore be carried out by the analysis machine. .
- the tubes 2 are clamped in the heating block by the support element of the analysis machine. At the end of the cycle, it is possible to unload from the analysis machine, the tubes 2 thanks to the plate 7. This thus makes it possible to simultaneously and easily remove all the tubes 2 which have undergone the reaction.
Landscapes
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Sampling And Sample Adjustment (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
- Devices For Use In Laboratory Experiments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2006165A FR3111355B1 (fr) | 2020-06-12 | 2020-06-12 | Dispositif de support de tubes utilisés pour l’analyse d’échantillons par des techniques d’amplification d’acides nucléiques et procédé d’utilisation d’un tel dispositif |
| PCT/FR2021/051049 WO2021250360A1 (fr) | 2020-06-12 | 2021-06-11 | Dispositif de support de tubes utilisés pour l'analyse d'échantillons par des techniques d'amplification d'acides nucléiques et procédé d'utilisation d'un tel dispositif |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4164800A1 true EP4164800A1 (fr) | 2023-04-19 |
| EP4164800B1 EP4164800B1 (fr) | 2025-04-30 |
Family
ID=73013530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21736644.2A Active EP4164800B1 (fr) | 2020-06-12 | 2021-06-11 | Dispositif de support de tubes utilisés pour l'analyse d'échantillons par des techniques d'amplification d'acides nucléiques et procédé d'utilisation d'un tel dispositif |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20230211348A1 (fr) |
| EP (1) | EP4164800B1 (fr) |
| FR (1) | FR3111355B1 (fr) |
| WO (1) | WO2021250360A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP1726558S (ja) * | 2021-11-03 | 2022-10-05 | ラベル | |
| USD1021135S1 (en) * | 2022-05-31 | 2024-04-02 | Tecan Trading Ag | Tray for pipetting tips |
| CN115231113B (zh) * | 2022-08-11 | 2024-10-11 | 宋虎成 | 一种畜牧兽医用的检疫抽血样本保存装置及其保存方法 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6436351B1 (en) * | 1998-07-15 | 2002-08-20 | Deltagen Research Laboratories, L.L.C. | Microtitre chemical reaction system |
| US6395235B1 (en) * | 1998-08-21 | 2002-05-28 | Argonaut Technologies, Inc. | Devices and methods for accessing reaction vessels |
| WO2004034026A2 (fr) | 2002-10-10 | 2004-04-22 | Irm, Llc | Dispositif de modification de la capacite, support et procedes de traitement d'echantillons |
| US7658887B2 (en) * | 2004-09-02 | 2010-02-09 | Scientific Specialties, Inc. | Pipette tip grid with lock mechanism |
| US9186677B2 (en) * | 2007-07-13 | 2015-11-17 | Handylab, Inc. | Integrated apparatus for performing nucleic acid extraction and diagnostic testing on multiple biological samples |
| US9358543B2 (en) * | 2013-11-08 | 2016-06-07 | Covaris, Inc. | Vessel holder and cap assembly |
| CN107868752B (zh) | 2017-12-19 | 2024-01-05 | 广东顺德墨赛生物科技有限公司 | 夹具 |
-
2020
- 2020-06-12 FR FR2006165A patent/FR3111355B1/fr active Active
-
2021
- 2021-06-11 EP EP21736644.2A patent/EP4164800B1/fr active Active
- 2021-06-11 WO PCT/FR2021/051049 patent/WO2021250360A1/fr not_active Ceased
- 2021-06-11 US US18/000,866 patent/US20230211348A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021250360A1 (fr) | 2021-12-16 |
| FR3111355A1 (fr) | 2021-12-17 |
| US20230211348A1 (en) | 2023-07-06 |
| FR3111355B1 (fr) | 2024-08-09 |
| EP4164800B1 (fr) | 2025-04-30 |
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