Fluid retention plates and analysis cartridges
11517898 · 2022-12-06
Assignee
Inventors
Cpc classification
B01L3/502792
PERFORMING OPERATIONS; TRANSPORTING
Y10T436/2575
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
B01L2200/16
PERFORMING OPERATIONS; TRANSPORTING
B01L2200/10
PERFORMING OPERATIONS; TRANSPORTING
B01L2300/0867
PERFORMING OPERATIONS; TRANSPORTING
B01L2400/0481
PERFORMING OPERATIONS; TRANSPORTING
B01L2400/0683
PERFORMING OPERATIONS; TRANSPORTING
B01L2300/044
PERFORMING OPERATIONS; TRANSPORTING
B01L3/502715
PERFORMING OPERATIONS; TRANSPORTING
B01L2300/0816
PERFORMING OPERATIONS; TRANSPORTING
B01L2300/087
PERFORMING OPERATIONS; TRANSPORTING
International classification
Abstract
Fluid storage containers and analysis cartridges for use in assay processes are presented. In addition, systems comprising such storage containers and analysis cartridges and methods of using such containers and cartridges are presented as well. In specific embodiments, fluid storage containers are configured to be coupled to analysis cartridges in a first stage and a second stage.
Claims
1. A method comprising: (a) adding a volume of a sample to a sample reservoir of a system, wherein the system comprises: (1) a first plate comprising: (i) a first side; (ii) a second side; (iii) a sample reservoir; (iv) a first port; (v) a channel connecting the sample reservoir and the first port; (vi) a sample dispensing channel opening onto the second side of the first plate, wherein the sample dispensing channel is in fluid communication with the sample reservoir; (2) a frangible blister coupled to the first side of the first plate and covering the first port; (3) a second plate comprising: (i) a first side; (ii) a second side; (iii) a conduit passing through the second plate from the first side of the second plate to the second side of the second plate; wherein the first side of the second plate is coupled to the second side of the first plate; and (4) a printed circuit board retained on the second side of the second plate; wherein the printed circuit board comprises an electrowetting surface; (b) lysing the sample in the first plate, wherein the lysing comprises actuating the frangible blister to transfer a lysis buffer from the frangible blister to the sample reservoir via the first port and the channel connecting the sample reservoir and the first port; and (c) transferring the lysed sample from the first plate to the electrowetting surface of the printed circuit board via the conduit passing through the second plate.
2. The method of claim 1, wherein the actuating of the frangible blister is performed manually.
3. The method of claim 1, wherein the printed circuit board comprises one or more heating elements.
4. The method of claim 1, where the first side of the second plate is coupled to the second side of the first plate prior to adding the volume of sample to the sample reservoir.
5. The method of claim 1, wherein: the first plate comprises: a plurality of protrusions extending from the second side of the first plate; and a plurality of pierceable seals, where each pierceable seal in the plurality of pierceable seals is coupled to one of the protrusions in the plurality of protrusions extending from the second side of the first plate; and the first side of the second plate is coupled to the second side of the first plate in a first stage with the pierceable seals intact prior to adding the volume of sample to the sample reservoir unit.
6. The method of claim 5, further comprising coupling the first side of the second plate to the second side of the first plate in a second stage, wherein at least one of the pierceable seals pierced.
7. The method of claim 1, wherein the first side of the second plate is coupled to the second side of the first plate after adding the volume of sample to the sample reservoir.
8. The method of claim 1, wherein: the second side of the first plate comprises a plurality of reagent reservoir units, each of which comprises a fluid displacement mechanism and a fluid volume; and the first side of the second plate comprises a plurality of bosses; and further comprising actuating the fluid displacement mechanism of at least one of the plurality of reagent reservoir units to deliver the volume of fluid in the reagent reservoir unit to the electrowetting surface of the printed circuit board via a conduit of one of the bosses.
9. The method of claim 8, further comprising actuating two or more of the fluid displacement mechanisms simultaneously.
10. The method of claim 8, further comprising actuating two or more of the fluid displacement mechanisms sequentially.
11. The method of claim 8, wherein at least one of the plurality of reagent reservoir units comprises a volume of oil, and the fluid displacement mechanism of the at least one reagent reservoir unit comprising a volume of oil is actuated before actuating the fluid displacement mechanism of any of the other reagent reservoir units and before transferring the lysed sample from the first plate to the electrowetting surface of the printed circuit board.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) The following drawings illustrate by way of example and not limitation. For the sake of brevity and clarity, every feature of a given structure may not be labeled in every figure in which that structure appears. Identical reference numbers do not necessarily indicate an identical structure. Rather, the same reference number may be used to indicate a similar feature or a feature with similar functionality, as may non-identical reference numbers.
(2) The embodiments of the present fluid storage containers and analysis cartridges shown in
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DETAILED DESCRIPTION
(23) Various features and advantageous details are explained more fully with reference to the non-limiting embodiments that are illustrated in the accompanying drawings and detailed in the following description. It should be understood, however, that the detailed description and the specific examples, while indicating embodiments of the invention, are given by way of illustration only, and not by way of limitation. Various substitutions, modifications, additions, and/or rearrangements will become apparent to those of ordinary skill in the art from this disclosure.
(24) In the following description, numerous specific details are provided to provide a thorough understanding of the disclosed embodiments. One of ordinary skill in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the invention.
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(26) While container 10 and cartridge 20 may be sold or provided in system 5, they may also be sold or provided separately, as may other embodiments of the present systems, containers, and cartridges.
(27) As discussed in more detail below, fluid storage container 10 comprises a plurality of reservoir units that may be preloaded with liquid reagents, oils, or other fluids usable to perform an assay. Fluid storage container 10 may comprise reservoir units that contain assay components that are not in fluidic form, such as lyophilized, dried, or powdered reagents. In the embodiments shown, the fluid assay is performed by an analysis element, such as the printed circuit board (PCB) 800, which is coupled to analysis cartridge 20. In other embodiments, other suitable analysis elements may be used.
(28) For example, certain embodiments of the present fluid storage containers are configured to be coupled to an analysis cartridge in at least two stages. Turning to system 5 specifically, in the first or “fastened” stage, fluid storage container 10 is secured to analysis cartridge 20 such that fluid storage container 10 is not readily separable from analysis cartridge 20. In the second or “engaged” stage, fluid storage container 10 is secured to analysis cartridge 20 such that lances on cartridge 20 pierce seals on the reservoirs containing the fluids. A fluid-tight (or substantially fluid-tight) path is thereby created between each reservoir and the PCB. Each reservoir unit may be sequentially engaged such that fluid is forced from the reservoir, along the fluid path, and onto the PCB to perform a fluid assay.
(29) Fluid Storage Container
(30) As shown in
(31) As shown in
(32) Bulk fluids plate 100 also comprises a sample control reservoir 160 (see
(33) Sample control reservoir 160 is in fluid communication with sample reservoir 150 through lysis channel 165 and lysis port 167. Lysis channel 165 is sealed by blister layer 130.
(34) As shown in
(35) Fluid storage container 10 further comprises a plurality of reagent reservoirs. The illustrated embodiment comprises a first reagent reservoir unit 101, a second reagent reservoir unit 102, a third reagent reservoir unit 103, a fourth reagent reservoir unit 104, a fifth reagent reservoir unit 105, a sixth reagent reservoir unit 106, a seventh reagent reservoir unit 107, and an eighth reagent reservoir unit 108. Fluid storage container 10 may comprise a greater or fewer number of reagent reservoirs units in other embodiments depending on the assay parameters. Note that the term “reagent reservoir unit” and related terms are not strictly limited to reservoir units that contain reagents, which are substances for use in a chemical reaction; other fluids used in assay preparation may be contained within reagent reservoirs, such as oils that are used to displace air from cartridge 20.
(36) In the illustrated embodiment, each reagent reservoir is a sealed space defined by a barrel comprising a reagent channel, the channel being sealed at the bottom end by a pierceable seal and sealably covered at the top by a flexible blister. Barrels are located on the bottom side of bulk fluids plate 100 (see
(37) The other reagent reservoirs comprise similar features and are configured in a similar manner. Second reagent reservoir unit 102 comprises second barrel 112 comprising a second reagent channel 122, a second pierceable seal 302 coupled to second barrel 112, and a second flexible blister 132 covering second reagent channel 122. Third reagent reservoir unit 103 comprises third barrel 113 comprising a third reagent channel 123, a third pierceable seal 303 coupled to third barrel 113, and a third flexible blister 133 covering third reagent channel 123. Fourth reagent reservoir unit 104 comprises fourth barrel 114 comprising a fourth reagent channel 124, a fourth pierceable seal 304 coupled to fourth barrel 114, and a fourth flexible blister 134 covering fourth reagent channel 124. Fifth reagent reservoir unit 105 comprises fifth barrel 115 comprising a fifth reagent channel 125, a fifth pierceable seal 305 coupled to fifth barrel 115, and a fifth flexible blister 135 covering fifth reagent channel 125. Sixth reagent reservoir unit 106 comprises sixth barrel 116 comprising a sixth reagent channel 126, a sixth pierceable seal 306 coupled to sixth barrel 116, and a sixth flexible blister 136 covering sixth reagent channel 126. Seventh reagent reservoir unit 107 comprises seventh barrel 117 comprising a seventh reagent channel 127, a seventh pierceable seal 307 coupled to seventh barrel 117, and a seventh flexible blister 137 covering seventh reagent channel 127. Eighth reagent reservoir unit 108 comprises eighth barrel 118 comprising an eighth reagent channel 128, an eighth pierceable seal 308 coupled to an eighth barrel 118, and an eighth flexible blister 138 covering eighth reagent channel 128.
(38) In a specific embodiment, first reagent reservoir unit 101 comprises about 70 uL of an imaging dilution buffer; second reagent reservoir unit 102 comprises about 70 uL of a wash buffer; third reagent reservoir unit 103 comprises about 70 uL of binding beads; fourth reagent reservoir unit 104 comprises about 0.6 mL of oil; fifth reagent reservoir unit 105 comprises about 0.5 mL of oil; sixth reagent reservoir unit 106 comprises about 280 uL of binding buffer; seventh reagent reservoir unit 107 comprises about 70 uL of wash buffer; and eighth reagent reservoir unit 108 comprises about 70 uL of rehydration buffer. In other embodiments, reagent reservoir units may comprise other fluids useful in performing a fluid assay. In addition, other embodiments may comprise reagent reservoirs capable of containing a larger or smaller volume of fluid. In specific embodiments, no reagent reservoir unit is configured to contain about (and in more specific embodiments, no more than) 2 mL of fluid. In other specific embodiments, each reagent reservoir unit is configured to contain more than about (and, in more specific embodiments, more than) 20 uL of fluid.
(39) As shown in
(40) As shown in
(41) In other embodiments not shown, a plurality of gaskets may be provided, such as equal in number to and corresponding to each barrel of bulk fluids plate 100.
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(43) Analysis Cartridge
(44) As shown in
(45) In the illustrated embodiment of
(46) The embodiment shown in
(47) Referring back to the embodiment of
(48) Furthermore, in the illustrated embodiment, the bosses are depicted as being substantially cylindrical in shape; in other words, the bosses have a substantially circular cross section. In other embodiments the bosses may not be cylindrical and may have substantially triangular, square, pentagonal, hexagonal, heptagonal, octagonal, or other polygonal cross sections, may be elliptical or partially rounded, or may have irregular cross sections. Each boss and corresponding barrel is configured to sealably mate with each other such that liquid can move from the barrel to the boss with substantially no liquid leaking out. In the depicted embodiment, this configuration is achieved by the boss having a chamber configured to receive a barrel. In other embodiments, this could also be achieved by the barrel having a channel that is configured to receive a boss. In at least some such other embodiments, the top edge of the boss could act as a piercing element (and thus would be one example of a piercing element associated with the boss), and the bottom of the boss's chamber could comprise a conduit through which liquid may pass that enters the chamber after flowing from the pierced barrel; in at least some other such embodiments, the boss could include a piercing element that extends upwardly from the bottom of the boss chamber to a location above the top edge of the boss (such a piercing element being yet another example of a piercing element associated with the boss), such that the piercing element is the first structure of the boss to contact the pierceable seal of the barrel. In embodiments where the barrel is configured to receive the boss, the shapes of the barrel channel and the outside of the boss could each be tapered and configured to fit tightly against each other to effect a substantial seal (where such taper decreases in size as the relevant protrusion extends from the relevant plate).
(49) In the illustrated embodiment, there are nine bosses that correspond to nine barrels—the eight reagent barrels 101-108 and one sample input barrel 109 of container 10. As shown in
(50) A cross section detail view of an embodiment of first boss 501 is shown in
(51) The illustrated embodiment of analysis cartridge 20 further comprises a plurality of oil-loading bosses 512 that are configured to be in fluid communication with PCB 800 and through which oil may be delivered to PCB 800. The illustrated embodiment of analysis cartridge 20 also comprise liophylized reagent bosses 511 that are configured to be in fluid communication with PCB 800 and through which liophylized reagent may be delivered to PCB 800.
(52) In the illustrated embodiment, retention plate 500 further comprises a plurality of vents 540 in fluid communication with PCB 800 and configured to vent gas, such as air from PCB 800 during use. Vents 540 are covered with membrane 300 which is configured to allow air to pass but not liquid. In the illustrated embodiment, membrane 300 is an adhesive-backed Versapor® 800 hydrophobic nylon mesh.
Embodiments of the Present Systems and Methods
(53) Embodiments of the present methods of using the illustrated embodiment of container 10 and cartridge 20 will be discussed with reference to
(54) In certain embodiments, sample input cap 151 may be removed from container 100 and a liquid sample introduced through sample input channel 152 into sample blister 153. Sample input cap 151 may then be replaced. In certain embodiments, sample input cap 151 may be removed and replaced manually by a user; in other embodiments, sample input cap 151 may be removed and replaced in an automated fashion.
(55) Container 10 may be coupled to cartridge 20 by aligning fastening tabs 182 and engagement tabs 184 of container 10 with slots 580 on cartridge 20. In a fastening step, force is applied to container 10, cartridge 20, or both, such that fastening tabs 182 slide into the corresponding slots 580 and container 10 is fastened to cartridge 20. Engagement tabs 184 remain outside their corresponding slots 580 and are not directly engaged with cartridge 20. None of the pierceable seals are pierced. This is known as the first stage, the first state, the fastened stage, or the fastened state.
(56) As shown in
(57) In an engaging step, further force is applied to container 10, cartridge 20, or both, such that engagement tabs 184 slide into the corresponding slots 580. This is known as the second stage, the engaged stage, the second state, or the engaged state.
(58) As shown in
(59) In certain embodiments, the fastening step may be accomplished manually while the engaging step may be performed by an analysis device configured to receive container 10 and cartridge 20. In other embodiments, both the fastening and engaging steps may be performed by an analysis device configured to receive container 10 and cartridge 20. In still other embodiments, both the fastening step and the engaging step may be performed manually.
(60) In a preferred embodiment, container 10 and cartridge 20 are introduced into an instrument at the fastened stage. For example, the instrument may comprise a Luminex MAGPIX® multiplexing platform (available from Luminex Corp., Austin, Tex.), though other suitable multiplexing or assay preparation instruments may be used.
(61) Once introduced into the instrument, force is applied to container 10, cartridge 20, or both such that container 10 and cartridge 20 are in the engaged stage such that each lance 531-539 pierces the foil 301-309 on the corresponding barrel 111-119.
(62) Frangible lysis blister 161 is actuated, releasing the lysis buffer contained within. The lysis buffer rehydrates the sample control located in sample control reservoir 160. In addition, the lysis buffer travels into sample reservoir 150, lysing the sample.
(63) In some embodiments, fourth flexible blister 134 and fifth flexible blister 135 are actuated, which dispense the oil contained within fourth reagent reservoir 134 and fifth reagent reservoir 135 to cartridge 20, thereby displacing any air contained within cartridge 20.
(64) Then, in some embodiments, first flexible blister 131, second flexible blister 132, third flexible blister 133, sixth flexible blister 136, seventh flexible blister 137, and eighth flexible blister 138 are actuated to dispense the fluid contained within each of the corresponding reagent reservoirs 101, 102, 103, 106, 107, and 108 to dispensing reservoirs 531, 532, 533, 536, 537, and 538 in cartridge 20.
(65) In some embodiments, sample blister 153 is then engaged, distributing the lysed sample through sample dispensing channel 192 to cartridge 20.
(66) These steps may be performed in the order listed in some embodiments, but may not be in other embodiments. Moreover, in other embodiments, not all the steps discussed above are performed. For example, fewer than all flexible blisters may be actuated.
(67) An alternative embodiment comprising system 445 including fluid storage container 410 and analysis cartridge 420 will be discussed further with reference to
(68) In the embodiment shown, sample input caps 438, 439 may be removed from pistons 431, 434 and a liquid sample introduced into the sample reservoirs 451 and 454. In certain embodiments, sample input caps 438 and 439 may be removed and replaced manually by a user; in other embodiments, sample input caps 438, 439 may be removed and replaced in an automated fashion. As shown in
(69) Container 410 may be coupled to cartridge 420 by aligning coupling members 475, 476 on container 410 to threaded holes 471, 472 on cartridge 420. In a fastening step, torque can be applied to coupling members 475, 476 to thread coupling members 475, 476 into threaded holes 471, 472. In this scenario seals 419 (also visible in
(70) In this state, system 445 is configured such that gasket 485 will prevent substantially any fluid from leaking out of container 410 or cartridge 420. More specifically, such a configuration is achieved at least in part by the configuration of first protrusion 411 contacting first floor 403, first lance 491 being inside first reagent channel 421 such that first conduit 492 is in fluid communication with sample reservoir 455, and 485 sealably engaging a portion of first protrusion 411 and first boss 401 such that substantially any fluid is prevented from leaking out of container 410 or cartridge 420 (that is, a substantially leak-proof seal is formed between container 410 and cartridge 420). As shown in
(71) Referring now to
(72) In one embodiment, container 410 and cartridge 420 are introduced into an instrument at the fastened stage. For example, the instrument may comprise a Luminex MAGPIX® multiplexing platform (available from Luminex Corp., Austin, Tex.), though other suitable multiplexing or assay preparation instruments may be used.
(73) After container 410 and cartridge 420 are loaded into the appropriate instrument, oil piston 436 can be actuated to release oil from reservoir 461 into cartridge 420 thereby displacing air within cartridge 420.
(74) In some embodiments, sample pistons 431 and 434 are actuated, which can dispense samples from sample reservoirs 455 and 458 into cartridge 420. In addition, pistons 432 and 433 can be actuated to dispense reagents contained within each reagent reservoirs 456 and 457 into cartridge 20. Furthermore, piston 435 can be actuated to dispense magnetic particles from reservoir 459 into cartridge 420.
(75) These steps may be performed in the order listed in some embodiments, but may not be in other embodiments. Moreover, in other embodiments, not all the steps discussed above are performed. For example, fewer than all pistons may be actuated. It is understood that the embodiments of
(76) Materials of Disclosed Embodiments
(77) Non-limiting materials used to construct the illustrated embodiments of the present systems, containers, cartridges, and elements of these are discussed below. Other suitable materials known to a person of ordinary skill in the art may be used instead.
(78) In the illustrated embodiment, bulk fluids plate 100 comprises polycarbonate. In other embodiments bulk fluids plate 100 may comprise other semi-rigid plastics or hard plastics, which may include polyurethanes, polyesters, epoxy resins and phenolic resins; polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), and polyethylene terephthalate (PET or PETE). In still other embodiments, bulk fluids plate 100 may comprise one or more metals, such as aluminum.
(79) In the illustrated embodiment, retention plate 500 comprises polycarbonate. In other embodiments retention plate 500 may comprise other semi-rigid plastics or hard plastics, which may include polyurethanes, polyesters, epoxy resins and phenolic resins; polyethylene (PE), polypropylene (PP) and polyvinyl chloride (PVC), polyethylene terephthalate (PET or PETE). In still other embodiments, retention plate 500 plate may comprise metals such as aluminum.
(80) Frangible lysis blister 161 is a Thinxxs 500 uL frangible blister in the embodiment shown. However, lysis blister may comprise other flexible and/or frangible polymers in other embodiments.
(81) Blister layer 130, flexible blisters 131-139, and sample blister 153 comprise LDPE in the illustrated embodiment. In other embodiments, these blisters may comprise other flexible polymers.
(82) Adhesive layers 140 and 141 comprise adhesive transfer tape (3M, 9485PC adhesive transfer tape) in the illustrated embodiment, though other forms of adhesive may be used.
(83) In the illustrated embodiment, gasket 200 comprises polyurethane. In specific embodiments, gasket 200 comprises a 0.06″ sheet of polyurethane that has been die-cut and coupled to bulk fluids plate 100 with adhesive transfer tape. Other suitable materials for gasket 200, such as polymers, may be used.
(84) Seals 301-309 in the illustrated embodiments comprise aluminum foil backed with bi-axially oriented polypropylene film (BOPP) (such as 0.001″ aluminum foil backed with 0.002″ BOPP film).
(85) It should be understood that the present devices and methods are not intended to be limited to the particular forms disclosed. Rather, they are to cover all modifications, equivalents, and alternatives falling within the scope of the claims. For example, certain embodiments of the container 10 and cartridge 20 discussed above are shown configured for use with an assay preparation module. However, container 10 and cartridge 20 are suitable for use in any small space where precise dispensation of fluids in a specified order may be required.
(86) The above specification and examples provide a complete description of the structure and use of an exemplary embodiment. Although certain embodiments have been described above with a certain degree of particularity, or with reference to one or more individual embodiments, those skilled in the art could make numerous alterations to the disclosed embodiments without departing from the scope of this invention. As such, the illustrative embodiment of the present devices is not intended to be limited to the particular forms disclosed. Rather, they include all modifications and alternatives falling within the scope of the claims, and embodiments other than the one shown may include some or all of the features of the depicted embodiment. For example, components may be combined as a unitary structure and/or connections may be substituted. As another example, one of ordinary skill in the art would understand that, in alternate embodiments, fastening tabs 182 and engagement tabs 184 may be located on cartridge 20 while slots 580 may be located on container 10. Further, where appropriate, aspects of any of the examples described above may be combined with aspects of any of the other examples described to form further examples having comparable or different properties and addressing the same or different problems. Similarly, it will be understood that the benefits and advantages described above may relate to one embodiment or may relate to several embodiments.
(87) The claims are not to be interpreted as including means-plus- or step-plus-function limitations, unless such a limitation is explicitly recited in a given claim using the phrase(s) “means for” or “step for,” respectively.