EP1458482B1 - Centrifugal filling of sample processing devices - Google Patents
Centrifugal filling of sample processing devices Download PDFInfo
- Publication number
- EP1458482B1 EP1458482B1 EP01992323A EP01992323A EP1458482B1 EP 1458482 B1 EP1458482 B1 EP 1458482B1 EP 01992323 A EP01992323 A EP 01992323A EP 01992323 A EP01992323 A EP 01992323A EP 1458482 B1 EP1458482 B1 EP 1458482B1
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- European Patent Office
- Prior art keywords
- sample processing
- processing device
- sample
- chambers
- loading
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- 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.)
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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
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
- B01L3/502738—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip characterised by integrated valves
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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
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5025—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures for parallel transport of multiple samples
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/06—Auxiliary integrated devices, integrated components
- B01L2300/0627—Sensor or part of a sensor is integrated
- B01L2300/0654—Lenses; Optical fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0809—Geometry, shape and general structure rectangular shaped
- B01L2300/0816—Cards, e.g. flat sample carriers usually with flow in two horizontal directions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0861—Configuration of multiple channels and/or chambers in a single devices
- B01L2300/0864—Configuration of multiple channels and/or chambers in a single devices comprising only one inlet and multiple receiving wells, e.g. for separation, splitting
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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
- B01L2400/00—Moving or stopping fluids
- B01L2400/04—Moving fluids with specific forces or mechanical means
- B01L2400/0403—Moving fluids with specific forces or mechanical means specific forces
- B01L2400/0409—Moving fluids with specific forces or mechanical means specific forces centrifugal forces
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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
- B01L2400/00—Moving or stopping fluids
- B01L2400/06—Valves, specific forms thereof
- B01L2400/0633—Valves, specific forms thereof with moving parts
- B01L2400/0655—Valves, specific forms thereof with moving parts pinch valves
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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
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
- B01L3/502707—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip characterised by the manufacture of the container or its components
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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
- B01L9/52—Supports specially adapted for flat sample carriers, e.g. for plates, slides, chips
- B01L9/527—Supports specially adapted for flat sample carriers, e.g. for plates, slides, chips for microfluidic devices, e.g. used for lab-on-a-chip
Definitions
- the present invention relates to the field of sample processing devices. More particularly, the present invention relates to sample processing devices and methods of distributing sample material in sample processing devices.
- One approach to reducing the time and cost of processing multiple samples is to use a device including multiple chambers in which different portions of one sample or different samples can be processed simultaneously. This approach, however, presents several issues related to distribution of sample materials to the multiple chambers in the devices. Other problems may be encountered in the migration of materials between chambers during processing, which may lead to erroneous test results due to cross-chamber contamination.
- Embodiments of the device have a membrane or its equivalent in a membrane chamber, a measurement chamber, and a channel connecting the two chambers.
- the device is configured with a plurality of measurement pathways with a corresponding plurality of membrane chambers and measurement chambers.
- the document US 6,319,469 B1 relates to methods and apparatus for performing microanalytic and microsynthetic analysis and procedures.
- a microsystem platform and a micromanipulation device is described for manipulating the platform that utilizes the centripetal force resulting from rotation of the platform to motivate fluid movement through microchannels.
- the document WO 94/26414 relates to devices and methods for carrying out an assay for the determination of nucleic acids.
- the document describes embodiments having a sample receiving chamber, a plurality of additional chambers, with additional chambers containing reagents for carrying out an assay for the determination of a nucleic acid.
- Analyte, if present, and particles in a medium are transported through chambers of the device.
- Reagents for conducting an amplification are combined with the transported medium, which is subjected to conditions for amplifying the analyte.
- the present invention provides methods for distributing sample material to a plurality of process chambers in a sample processing device by rotating the device about an axis of rotation.
- the process chambers are located along conduits extending from a loading chamber and, together, the loading chamber, conduits, and process chambers form process arrays that are aligned along a length of the sample processing devices.
- the process arrays are unvented, i.e., access to the interior volume of the process arrays is available only through the loading chamber.
- the sample processing devices may include conduits that can be sealed by deforming one or both sides of the sample processing device to restrict or completely close off the conduit. It may be advantageous if
- the sample processing device includes a pressure sensitive adhesive located between two major sides of the device to assist in sealing of the conduit during and after deformation.
- sample processing devices may include, for example, elongated processing chambers, feeder conduits leading to the process chambers that form feeder conduit angles with the main conduit of less than 90 degrees, etc.
- the process arrays in sample processing devices of the present invention may be capable of customization by selective opening and/or closing of fluid paths in the process arrays.
- centrifugal loading it may be desirable to compress the sample processing devices during rotation to significantly reduce or eliminate leakage from the conduits and/or process chambers as a result of the centrifugal forces. Compression may be particularly helpful when used in connection with centrifugal loading of sample processing devices constructed using pressure sensitive adhesives.
- the present specification also relates to an assembly of a carrier and a sample processing device attached to the carrier.
- the carrier may integral with the sample processing device, i.e., it may be provided as a single use article, or the carrier may be reusable.
- the carriers may advantageously include rails to support the main conduits of process arrays on the sample processing device, openings to allow for monitoring of process chambers on the sample processing devices, and other features.
- the present invention provides a method of distributing sample material in a sample processing device by providing a sample processing device with first and second opposing ends and at least one unvented process array including a loading chamber located proximate the first end, a main conduit extending towards the second end, and a plurality of process chambers distributed along the main conduit, wherein the main conduit is in fluid communication with the loading chamber and the plurality of process chambers.
- the method further includes loading sample material in the loading chamber of each of the process arrays, and transporting the sample material to at least some of the process chambers by rotating the sample processing device about an axis of rotation located proximate the first end of the sample processing device, wherein the process chambers are located further from the axis of rotation than the loading chambers.
- sample processing assembly including a sample processing device with first and second opposing ends and at least one unvented process array comprising a loading chamber located proximate the first end, a main conduit extending towards the second end, and a plurality of process chambers distributed along the main conduit, wherein the main conduit is in fluid communication with the loading chamber and the plurality of process chambers; and a carrier attached to a first major side of the sample processing device, the carrier including a carrier body spaced from at least a portion of the first major side of the sample processing device.
- the present specification relates to a sample processing device including first and second opposing ends; a plurality of unvented process arrays, each of the process arrays including a loading chamber located proximate the first end; a main conduit extending towards the second end; and a plurality of process chambers distributed along the main conduit, wherein the main conduit is in fluid communication with the loading chamber and the plurality of process chambers; and wherein each of the process chambers is in fluid communication with one of the main conduits through a feeder conduit, and wherein the feeder conduits form feeder conduit angles with the main conduits that are less than 90 degrees.
- the present invention provides a sample processing device that can be used in the processing of liquid sample materials (or sample materials entrained in a liquid) in multiple process chambers to obtain desired reactions, e.g., PCR amplification, ligase chain reaction (LCR), self-sustaining sequence replication, enzyme kinetic studies, homogeneous ligand binding assays, and other chemical, biochemical, or other reactions that may, e.g., require precise and/or rapid thermal variations. More particularly, the present invention provides sample processing devices in which sample material is delivered to the process chambers by rotating the devices. The methods may also include sealing of the sample processing devices after sample material distribution.
- desired reactions e.g., PCR amplification, ligase chain reaction (LCR), self-sustaining sequence replication, enzyme kinetic studies, homogeneous ligand binding assays, and other chemical, biochemical, or other reactions that may, e.g., require precise and/or rapid thermal variations.
- LCR ligase chain reaction
- the present invention provides sample processing devices in
- sample processing devices of the present invention may be manufactured according to the principles described in U.S. Provisional Patent Application Serial No. 60/214,508 filed on June 28, 2000 and titled THERMAL PROCESSING DEVICES AND METHODS; U.S. Provisional Patent Application Serial No. 60/214,642 filed on June 28, 2000 and titled SAMPLE PROCESSING DEVICES, SYSTEMS AND METHODS; and U.S. Provisional Patent Application Serial No. 60/237,072 filed on October 2, 2000 and titled SAMPLE PROCESSING DEVICES, SYSTEMS AND METHODS.
- sample processing devices that could be used to manufacture sample processing devices according to the principles of the present invention.
- adhesives e.g., pressure sensitive adhesives
- devices of the present invention could be manufactured using heat sealing or other bonding techniques.
- the sample processing device 10 includes at least one, and preferably a plurality of process arrays 20. Each of the process arrays 20 extends from proximate a first end 12 towards the second end 14 of the sample processing device 10.
- the process arrays 20 are depicted as being substantially parallel in their arrangement on the sample processing device 10. Although this arrangement may be preferred, it will be understood that any arrangement of process arrays 20 that results in their substantial alignment between the first and second ends 12 and 14 of the device 10 is sufficient.
- Alignment of the process arrays 20 between the first and second ends 12 and 14 is important because sample materials are distributed throughout the sample processing device by rotation about an axis of rotation proximate the first end 12 of the device 10. When so rotated, any sample material located proximate the first end 12 is driven toward the second end 14 by centrifugal forces developed during the rotation.
- Each of the process arrays 20 includes at least one loading chamber 30, at least one main conduit 40, and a plurality of process chambers 50 located along each main conduit 40. It may be preferred that each of the process arrays include only one loading chamber 30 and only one main conduit 40.
- the process chambers 50 are in fluid communication with the main conduit 40 through feeder conduits 42.
- the loading chamber 30 in each of the process arrays 20 is in fluid communication with each on the process chambers 50 located along the main conduit 40 leading to the loading chamber 30.
- Each of the process arrays 20 depicted in Figure 1 also includes an optional drain chamber 22 located at the end of the main conduit 40.
- Each of the loading chambers 30 includes an inlet port 32 for receiving sample material into the loading chamber 30.
- the sample material may be delivered to port 32 by any suitable technique and/or equipment.
- a pipette 11 is depicted in Figure 1 , but is only one technique for loading sample material into the loading chambers 30.
- the pipette 11 may be operated manually or may be part of an automated sample delivery system for loading the sample material into loading chambers 30 a sample processing device 10.
- Each of the process arrays 20 in the sample processing devices 10 of the present invention are preferably unvented.
- an "unvented" process array is a process array in which the only ports leading into the volume of the process array are located in a loading chamber of the process array.
- sample materials must be delivered to the loading chamber through a port located in the loading chamber.
- any air or other fluid located within the process array before loading with sample material must also escape from the process array through a port or ports located in the loading chamber.
- a vented process array would include at least one opening outside of the loading chamber. That opening would allow for the escape of any air or other fluid located within the process array before loading during distribution of the sample material within the process array.
- the process chamber 50 defining a volume 52 that may include a reagent 54. It may be preferred that at least some, and preferably all, of the process chambers 50 in the devices 10 of the present invention contain at least one reagent before any sample material is distributed.
- the reagent 54 may be fixed within the process chamber 50 as depicted in Figure 2 .
- the reagent 54 is optional, i.e., sample processing devices 10 of the present invention may or may not include any reagents 54 in the process chambers 50.
- some of the process chambers 50 may include a reagent 54, while others do not.
- different process chambers 50 may contain different reagents.
- the major sides 16 and 18 of the device 10 may be manufactured of any suitable material or materials. Examples of suitable materials include polymeric materials (e.g., polypropylene, polyester, polycarbonate, polyethylene, etc.), metals (e.g., metal foils), etc.
- first and second major sides 16 and 18 be constructed of a material or materials that substantially transmit electromagnetic energy of selected wavelengths.
- one of the first and second major sides 16 and 18 be constructed of a material that allows for visual or machine monitoring of fluorescence or color changes within the process chambers 50.
- first and second major sides 16 and 18 be in the form of a metallic foil.
- the metallic foil may include a passivation layer on the surfaces that face the interiors of the loading chambers 30, main conduits 40, feeder conduits 42, and/or process chambers 50 to prevent contamination of the sample materials.
- the first major side 16 is preferably manufactured of a polymeric film (e.g., polypropylene) that is formed to provide structures such as the loading chambers 30, main conduit 40, feeder conduits 42, and process chambers 50.
- the second major side 18 is preferably manufactured of a metallic foil, e.g., an aluminum or other metal foil.
- the metallic foil is preferably deformable as discussed in more detail below.
- the first and second major sides 16 and 18 may be attached by any suitable technique or techniques, e.g., heat sealing, ultrasonic welding, etc. It may, however, be preferred that the first and second major sides 16 and 18 be attached using adhesive.
- the adhesive may preferably be provided in the form of a layer of adhesive 19. It may be preferred that the adhesive layer 19 be provided as a continuous, unbroken layer over the surface of at least one of the first and second major sides 16 and 18. It may, for example, be preferred that the adhesive layer 19 be provided on the metallic foil of major side 18.
- a variety of adhesives may be used, although any adhesive selected should be capable of withstanding the forces generated during processing of any sample materials located in the process chambers 50. Those forces may be large where, e.g., the processing involves thermal cycling as in, e.g., polymerase chain reaction and similar processes.
- the adhesives may include, e.g., hot melt adhesives, curable adhesives, pressure sensitive adhesives, etc.
- pressure sensitive adhesives that may be used in connection with the sample processing devices of the present invention are those that are resistant to high temperatures and humidity. It may, for example, be preferred to use silicone pressure sensitive adhesives.
- silicone-based pressure sensitive adhesives are silicone-polyurea compositions as described in, e.g., U.S. Patents 5,461,134 and 6,007,914 or International Publication No. WO 96/35458 that contain a sufficient level of tackifying resin to provide the desired tackiness to the composition.
- all features e.g., loading chambers 30, main conduit 40, feeder conduit 42, process chambers 50, and drain chambers 22, be formed in the first major side 16 while the second major side 18 is substantially flat.
- a flat second major side 18 may promote intimate contact with, e.g., a thermal block such as that used in thermal cycling equipment.
- features may be formed in both sides 16 and 18 of sample processing devices according to the present invention.
- FIG. 1 Another potential feature of the sample processing devices of the invention is isolation of the process chambers 50 by closing the fluid pathways in the devices 10.
- the process chambers 50 may be isolated after distribution of any sample materials by deforming the second major side 18 such that it extends into one or both of the main conduits 40 or the feeder conduits 42 in each of the process arrays 20.
- Figure 3 illustrates one such closure method where the second major side 18 is deformed into the main conduit 40, with the adhesive layer 19 located between the two sides.
- the desire to hermetically seal fluid pathways in the sample processing devices 10 of the present invention may lead towards the use of pressure sensitive adhesive for the adhesive layer 19.
- a pressure sensitive adhesive is present between the first and second major sides 16 and 18 of the device, deformation of the second major side 18 may result in adhesion between the first and second major sides 16 and 18 in the deformed area. That adhesion may enhance any sealing or closure produced by the deformation.
- the need for hermetic sealing may be more acute when the sample processing devices are to be used in thermal processing reactions such as, e.g., polymerase chain reaction, in which any liquids in the devices can exert high pressures on the seals due to thermal expansion.
- isolation of the process chambers 50 may involve deformation of the feeder conduits 42 and/or main conduits 40 within each of the process arrays 20.
- isolation of the process chambers 50 may involve plastic deformation of the metallic layer to close the main conduits 40 and/or feeder conduits 42.
- a pressure sensitive adhesive 19 is used to attach the first and second major sides 16 and 18 of the sample processing device together, that same pressure sensitive adhesive may improve the sealing of main conduits 40 and/or feeder conduits 42 by adhering the deformed first and second major sides 16 and 18 together.
- the process arrays 20 are closed after distribution of sample materials into process chambers 50, it may be necessary to deform only a portion of the main conduit 40 or, alternatively, the entire length of the distribution channel 40. Where only a portion of the main conduit 40 is deformed, it may be preferred to deform that portion of the main conduit 40 located proximate the loading chamber 30.
- Sealing all of the main conduit 40 by forcing the sides 16 and 18 together along the length of the conduit 40 may provide advantages such as driving any fluid located in the main conduit 40 back into the loading chamber 30.
- One potential advantage, however, of sealing only a portion of the main conduit 40 is that either none or only a small amount of any fluid material located in the main conduit 40 would be returned to the loading chamber 30.
- sample material may be delivered to the process chambers 50'of the process array 20' by rotating.
- sample processing device 10' includes only one process array 20' with a single loading chamber 30' connected to the process chambers 50' along two main conduits 40'.
- the amount of sample material delivered to each of the loading chambers on the devices 10' may vary. It may, however, be preferred that the volume of sample material delivered to each of the loading chambers is no greater than the combined volumes of any main conduits, feeder conduits, and process chambers in fluid communication with the loading chamber. Where an optional drain chamber (see, e.g., Figure 1 ) is located at the distal and of the process array, the amount of sample material delivery to each of the loading chambers may be increased to compensate for the additional volume of the process array downstream from the loading chamber.
- the distribution of sample material is effected by rotating the sample processing device 10' about an axis of rotation 15' located proximate the first end 12' of the sample processing device 10'. Rotation of the device 10' about the axis of rotation 15'when so oriented will result in centrifugal forces on any sample materials located within the loading chamber 30'. The centrifugal forces will drive the sample material out of the loading chamber 30' and into the main conduits 40' for delivery to the process chambers 50'.
- the sample processing device 10' is oriented such that the process chambers 50' are located further from the axis of rotation 15'than the loading chamber 30'.
- the sample processing device 10' is located on a platter 17' that rotates about the axis 15'.
- the platter 17' may preferably be capable of accepting more than one sample processing device 10' for simultaneous rotation about axis 15'.
- the orientation of the sample processing devices relative to the axis of rotation 15' is not critical, provided that the process chambers are located further from the axis of rotation 15' than the loading chambers.
- the edge of the first end 12' of the sample processing device 10' may be oriented substantially perpendicular to the axis of rotation as depicted in Figure 4 .
- the axis of rotation 15' may be substantially aligned with (e.g., parallel to) the edge of the first end 12' of the sample processing device 10.
- a multitude of orientations of the first end 12' relative to the axis 15' can be envisioned between parallel and perpendicular, all of which are acceptable as long as the process chambers are distal from the axis 15'relative to the loading chambers on the devices.
- the process arrays of sample processing devices according to the present invention are preferably unvented as described above, distribution of sample materials to the process chambers may be difficult due to the air or other fluids trapped within the process chambers.
- the techniques that may be used to assist in distribution of the sample materials are selection of the materials used to construct the sample processing device, the addition of materials to the sample material (e.g., the addition of a surfactant to reduce surface tension in the sample material), manipulation of the viscosity of the sample material (e.g., by heating), etc.
- centrifugal loading of sample materials into process chambers is the ability to rotate the sample processing device and inspect the device after an initial period of rotation to determine whether sample material has been adequately distributed to the process chambers. If distribution is not satisfactory, the sample processing device can be rotated again until satisfactory sample material distribution is obtained.
- the methods of the present invention may also employ two or more acceleration/deceleration cycles to assist in distribution of sample materials from the loading chambers to the process chambers. Alternating acceleration and deceleration of the device during rotation may essentially burp the sample materials through main conduit and feeder conduits (if any) into process chambers. It may also be helpful if the acceleration and/or deceleration are rapid.
- the rotation may also preferably only be in one direction or it may be in opposite directions.
- the actual acceleration and deceleration rates may vary based on a variety of factors such as temperature, size of the sample processing device, size of the conduits and chambers, distance of the sample material from the axis of rotation, materials used to manufacture the devices, properties of the sample materials (e.g., viscosity), etc.
- a useful acceleration/deceleration cycle may include an initial acceleration to about 4000 revolutions per minute (rpm), followed by deceleration to about 1000 rpm over period of about 1 second, with oscillations in rotational speed of the device between 1000 rpm and 4000 rpm at 1 second intervals until a sample materials are distributed.
- the methods of the present invention may also include vibration of the sample processing device to assist in the distribution of sample materials into process chambers. Vibration, such as tapping, high frequency oscillations, etc., may assist in removal of entrapped air bubbles located within the conduits or process chambers. Vibration of the sample processing device may be employed before or after rotation, or it may be employed during rotation of the sample processing device about the axis of rotation.
- process chambers illustrated in device 10 of Figure 1 appear substantially circular in shape, it should be understood that the process chambers used in sample processing devices of the present invention may take any suitable shape.
- One example of an alternative shape is depicted in Figure 5 in which the process chambers 150 are in the form of oval shapes that are elongated along axis 151.
- the axis 151 is preferably generally aligned with the main conduit 140. As a result, the axis 151 will generally extend from the first end of the sample processing device to its second end, with the oval shapes of process chambers 150 having their largest dimension aligned between the first and second ends of the sample processing device.
- FIG. 5 also depicts feeder conduits 142 that are preferably angled off of the main conduit 140 and adjoin the process chambers 150 at one end. It may be further preferred that the feeder conduits 142 meet the process chambers 150 at the end closest to the first end of the sample processing device (which is, therefore, the end of the process chamber that is closest to the axis of rotation during loading). Entry of the feeder conduits 142 into the process chambers 150 at the end may facilitate removal of air within the chambers 150 during loading.
- the feeder conduit angle ⁇ i.e., the included angle formed between the feeder conduits 142 and the main conduit 140, may also enhance filling of the process chambers 150 by promoting the removal of the air. It may, for example, be preferred that the feeder conduit angle be less than 90 degrees, more preferably less than 75 degrees. The feeder conduit angle will always be measured between the side of the feeder conduit 142 facing away from the first end of the device and the main conduit 140.
- FIG. 5 Another potentially advantageous optional feature illustrated in Figure 5 is the longitudinal offset of the feeder conduits 142 on opposing sides of the main conduit 140 (as opposed to the cross-conduit alignment of the feeder conduits 42 in Figure 1 ). That offset between the points at which the opposing feeder conduits 142 join the main conduit 140 may assist in preventing cross-chamber contamination during filling and/or processing.
- Figures 6 and 7 in conjunction with Figure 5 , illustrate yet another optional feature of the sample processing devices of the present invention.
- Figure 6 is a cross-sectional view of Figure 5 taken along line 6-6 in Figure 5
- Figure 7 is a cross-sectional view of Figure 6 taken along line 7-7 in Figure 6 .
- the figures illustrate the smaller cross-sectional area of the feeder conduit 142 as compared to the main conduit 140.
- the different cross-sectional area of the conduits 140 and 142 is achieved, in the illustrated embodiment, by different heights and widths in the two conduits.
- Providing conduits with different cross-sectional areas may limit diffusion of sample material from the process chambers 150 into the main conduit 140 after and/or during filling. By limiting diffusion, cross-chamber contamination may also be reduced.
- Figure 8 is a schematic diagram illustrating another arrangement for process arrays 220 useful in sample processing devices.
- the staggered relationship between loading chambers 230 may improve the density or spacing between process chambers 250.
- Each of the loading chambers 230 also includes a loading port 232 and a vent port 234 which may facilitate rapid filling of the loading chambers 230 by providing a pathway separate from the loading port 232 for air to escape during filling of the loading chamber 230.
- FIG. 8 Another feature depicted in Figure 8 is the serial relationship between the process chambers 250 located along each of the main conduits 240. Each pair of successive process chambers 250 is in fluid communication with each other along main conduit 240. As a result, if any reagents or other materials are to be located within process chambers 250 before distribution of the sample material, then some mechanism or technique for preventing removal of those materials during distribution of the sample material must be provided.
- the reagents may be contained in a wax or other substance within each of the process chambers 250.
- FIG. 9 is a schematic diagram illustrating yet another arrangement of process arrays 320 that may be used in connection with sample processing devices of the present invention.
- Each of the process arrays 320 includes a loading chamber 330 that, in turn, includes a loading port 332 and a vent port 334.
- the loading chambers 330 are in fluid communication with a plurality of process chambers 350 through main conduits 340.
- valves 344 along the main conduits 340.
- Each of the main conduits 340 bifurcates to an individual subset of process chambers 350.
- the valves 344 By selectively opening or closing the valves 344 (which may be either closed or open when manufactured) the delivery of sample material to each subset of process chambers 350 may be enabled or prevented. For example, if one of the valves 344 is open while the other valve 344 is closed, delivery of sample material will be effected only to one subset of process chambers 350 (through the open valve 344).
- valves 344 may, however, provided the ability for automated control or customization of the sample processing device including process arrays 320.
- the valves 344 may take any suitable form, some examples of which are described in the patent applications identified above.
- valves 344 may be opened to increase the number of process chambers 350 to which sample material is delivered, thereby increasing the number of tests performed.
- FIG. 10 another optional feature of the present invention is separation of the loading chambers 430 from the remainder of the sample processing device 410. Separation of the loading portion of the sample processing device 410 from the portion containing the process chambers 450 may provide advantages such as, for example, reducing the size of the sample processing device 410, reducing the thermal mass of the sample processing device 410, removing any sample materials that may remain within the loading chambers 430 after distribution to process chambers 450, etc.
- Separation of the loading chambers 430 from the sample processing device 410 may involve, for example, cutting the sample processing device 410 along the separation line 413 as depicted in Figure 10 .
- the main conduits 440 be sealed across at least the separation line 413 to prevent leakage of the sample materials during and after the separation process.
- a pressure sensitive adhesive within the main conduits 440 may be particularly helpful to ensure adequate sealing of the main conduits.
- seal 444 may be provided, e.g., in the form of an adhesive coated foil or other material. Alternatively or in addition to the use of an adhesive to secure the seal 444, it may be desirable to, e.g., heat seal the seal 444 in place on the sample processing device 410.
- one alternative according to the background of the invention to physical separation of the loading chambers 530 from the remainder of the sample processing device 510 may include folding the sample processing device 510 along, e.g., separation line 513. That folding process may also close the main conduit 540 across the separation line 513 by crimping the main conduits 540, such that a desired level isolation may be achieved between the process chambers 550 without further deformation of any of the main conduits 540 or the feeder conduits 542.
- crimping areas 546 located at the intersections of the main conduits 540 with the folding line 513 that are wider and shallower than the surrounding portions of conduits 540 to facilitate crimping of the conduits 540 during folding.
- the wider, shallower crimping areas 546 do, however, preferably provide a cross-sectional area for fluid flow that is similar to the cross-sectional fluid flow area of the surrounding portions of the main conduits 540.
- the centrifugal forces developed during rotation of the sample processing devices to deliver the sample materials to process chambers may challenge the sealing of the process chambers and other fluid pathways in each of the process arrays.
- the challenges may be especially acute when the sample processing device is constructed using an adhesive to attach to layers together.
- the sample processing device 610 may, for example, be located within a compression device 660 (e.g., in the form of a clamshell or other suitable structure) that compresses the major sides of the sample processing device 610 together during rotation.
- the compression device 660 may, for example, include conformable material 662 in contact with one side of the sample processing device 610.
- the conformable material 662 may, for example be a resilient foam or similar composition.
- a base 664 in contact with the opposing side of the sample processing device 610. As the conformable material 662 and the base 664 are biased toward each other, the major sides of the sample processing device 610 are compressed. That compression may significantly reduce or prevent leakage of any sample materials out of the process chambers or other fluid pathways during rotation of the sample processing device 610.
- the conformable material 662 is preferably located in contact with the side of the device 610 that includes any structures such as process chambers or conduits protruding therefrom to avoid damaging those structures.
- the base 664 may be formed of any suitable material which may be rigid where no structures are protruding from the side of the device 610 facing the base 664.
- FIG. 15 and 16 A portion of an alternative compression device is depicted in Figures 15 and 16 in connection with a process chamber 650' and portion of a feeder conduit 642'.
- the alternative compression device is designed to provide pressure.
- the compression device includes a shaped compression die 662' that applies pressure along a discrete area or areas located about the periphery of the process chamber 650' and the feeder conduit 642'.
- the compression die 662' preferably acts against a base 664' located on the opposite side of the sample processing device. Departing from the design of the compression device depicted in Figure 14 , the compression die 662' may preferably be formed of a substantially rigid material
- Figure 17 is an exploded perspective view of an assembly including a sample processing device 710 of the present invention and a carrier 780. Because, in many instances, the sample processing devices 710 are manufactured from materials that are relatively thin, it may be desirable to attach the device 710 to a carrier 780 for a variety of reasons. Among those reasons are the need to provide an assembly having sufficient thickness to be processed in existing thermal processing equipment with a minimum of modification to that equipment.
- the thermal mass of the sample processing device 710 can be minimally affected as compared to manufacturing the entire sample processing device 710 with a thickness suitable for processing in conventional equipment.
- Another potential advantage of a carrier 780 is that the sample processing devices 710 may exhibit a tendency to curl or otherwise deviate from a planar configuration. Attaching the device 710 to a rigid carrier 780 can retain the sample processing device in a planar configuration for processing.
- the carrier 780 may be attached to the sample processing device 710 in a manner that allows for the carrier 780 to be reused with many different sample processing devices 710.
- each carrier 780 may be permanently attached to a single sample processing device 710 such that, after use, both the sample processing device 710 and the carrier 780 are discarded together.
- the sample processing device 710 may be manufactured as described above.
- the carrier 780 may include various features such as carrier openings 782 that are preferably aligned with the plurality of process chambers 750 in the device 710. By providing carrier openings 782, the process chambers 750 can be viewed from the side of the sample processing device 710 facing the carrier 780.
- One alternative to providing the plurality of carrier openings 782 is to manufacture the carrier 780 of a material (or materials) transmissive to electromagnetic radiation in the desired wavelengths. As a result, it may be possible to use a carrier 780 that is contiguous over the surface of the sample processing device 710, i.e., the carrier provides no openings for access to the process chambers 750.
- the carrier 780 illustrated in Figures 17 and 18 may also provide advantages in the sealing or isolation of the process chambers 750 after loading.
- Figure 18 illustrates the rails 783 in the carrier 780 that extend along the length of the main conduits 740 in the associated sample processing device 710.
- the rails 783 may, for example, provide a surface against which the main conduits 740 of the sample processing device 710 may be pressed while the conduit is deformed to isolate the process chambers 750 and/or seal the conduits 740 prior to separating the loading chambers 730 from the device 710.
- the rails 783 may also be relied on during, e.g., thermal processing to apply pressure to the conduits 740 (thereby potentially improving the seals formed along the main conduits 740). Furthermore, the use of rails 783 also provides an additional advantage in that they provide for significantly reduced contact between the sample processing device 710 and the carrier 780 while still providing the necessary support for sealing of the main conduits 740 on device 710. The importance of reducing contact between the carrier 780 and device 710 may be particularly important when the assembly is to be used in thermal processing of sample materials (e.g., polymerase chain reaction, etc.).
- the carrier 780 may be characterized including a carrier body that is spaced from the sample processing device 710 between the main conduits 740 when the rails 783 are aligned with the main conduits 740.
- the voids formed between the carrier body and the sample processing device 710 may be occupied by air or by, e.g., a resilient and/or thermally insulating material.
- FIG. 17 and 18 Various alignment features are also illustrated in Figures 17 and 18 , including structures that align the sample processing device 710 relative to the carrier 780, as well as structures that align the assembly of sample processing device 710 and carrier 780 relative to, e.g., a thermal processing system used to thermally cycle materials in the sample process chambers 750. Alignment may also be used in connection with a detection system for detecting the presence or absence of a selected analyte in the process chambers 750.
- the sample processing device 710 be aligned relative to the carrier 780 proximate a center of both of those articles (center 781 of carrier 780 being indicated in Figure 17 ). To prevent rotation of the sample processing device 710 relative to the carrier 780, at least two points of registration or contact are required. Because the device 710 and carrier 780 may be subjected to temperature extremes during processing, it may be desirable, for example, that the sample processing device 710 be fixedly connected to carrier 780 in the center of the two articles, while any additional points of attachment provide for differential expansion/contraction between the device 710 and carrier 780.
- the alignment structures used to align the assembly as a whole to, e.g., thermal cycling and/or detection equipment, include protrusions 774 that are preferably designed to extend through alignment openings 776 in the sample processing device 710.
- alignment of the assembly is based on structures found in carrier 780.
- One advantage to relying on the carrier 780 for alignment structures is that its construction will typically being more dimensionally stable and accurate as compared to the sample processing device 710.
- Figure 19 illustrates yet another optional feature of carriers used in connection with the present invention.
- the carrier 880 is depicted with an optical element 888, e.g., a lens, that may assist in focusing electromagnetic energy directed into the process chamber 850 or emanating from the process chamber 850.
- the optical element 888 is depicted as integral with the carrier 880, although it should be understood that the optical element 888 may be provided as a separate article that is attached to the carrier 880.
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Abstract
Description
- The present invention relates to the field of sample processing devices. More particularly, the present invention relates to sample processing devices and methods of distributing sample material in sample processing devices.
- Many different chemical, biochemical, and other reactions are performed on a variety of sample materials. Although it may be possible to process samples individually and obtain accurate sample-to-sample results, individual processing of samples can be time-consuming and expensive.
- One approach to reducing the time and cost of processing multiple samples is to use a device including multiple chambers in which different portions of one sample or different samples can be processed simultaneously. This approach, however, presents several issues related to distribution of sample materials to the multiple chambers in the devices. Other problems may be encountered in the migration of materials between chambers during processing, which may lead to erroneous test results due to cross-chamber contamination.
- The document
WO 01/07892 - The document
US 6,319,469 B1 relates to methods and apparatus for performing microanalytic and microsynthetic analysis and procedures. A microsystem platform and a micromanipulation device is described for manipulating the platform that utilizes the centripetal force resulting from rotation of the platform to motivate fluid movement through microchannels. - The document
WO 94/26414 - The present invention provides methods for distributing sample material to a plurality of process chambers in a sample processing device by rotating the device about an axis of rotation. The process chambers are located along conduits extending from a loading chamber and, together, the loading chamber, conduits, and process chambers form process arrays that are aligned along a length of the sample processing devices. The process arrays are unvented, i.e., access to the interior volume of the process arrays is available only through the loading chamber.
- The sample processing devices may include conduits that can be sealed by deforming one or both sides of the sample processing device to restrict or completely close off the conduit. It may be advantageous if
- the sample processing device includes a pressure sensitive adhesive located between two major sides of the device to assist in sealing of the conduit during and after deformation.
- Other aspects of the sample processing devices may include, for example, elongated processing chambers, feeder conduits leading to the process chambers that form feeder conduit angles with the main conduit of less than 90 degrees, etc.
- The process arrays in sample processing devices of the present invention may be capable of customization by selective opening and/or closing of fluid paths in the process arrays.
- In some methods of centrifugal loading, it may be desirable to compress the sample processing devices during rotation to significantly reduce or eliminate leakage from the conduits and/or process chambers as a result of the centrifugal forces. Compression may be particularly helpful when used in connection with centrifugal loading of sample processing devices constructed using pressure sensitive adhesives.
- The present specification also relates to an assembly of a carrier and a sample processing device attached to the carrier. The carrier may integral with the sample processing device, i.e., it may be provided as a single use article, or the carrier may be reusable. The carriers may advantageously include rails to support the main conduits of process arrays on the sample processing device, openings to allow for monitoring of process chambers on the sample processing devices, and other features.
- In one aspect, the present invention provides a method of distributing sample material in a sample processing device by providing a sample processing device with first and second opposing ends and at least one unvented process array including a loading chamber located proximate the first end, a main conduit extending towards the second end, and a plurality of process chambers distributed along the main conduit, wherein the main conduit is in fluid communication with the loading chamber and the plurality of process chambers. The method further includes loading sample material in the loading chamber of each of the process arrays, and transporting the sample material to at least some of the process chambers by rotating the sample processing device about an axis of rotation located proximate the first end of the sample processing device, wherein the process chambers are located further from the axis of rotation than the loading chambers.
- The following description also discusses and describes a sample processing assembly including a sample processing device with first and second opposing ends and at least one unvented process array comprising a loading chamber located proximate the first end, a main conduit extending towards the second end, and a plurality of process chambers distributed along the main conduit, wherein the main conduit is in fluid communication with the loading chamber and the plurality of process chambers; and a carrier attached to a first major side of the sample processing device, the carrier including a carrier body spaced from at least a portion of the first major side of the sample processing device.
- In another aspect, the present specification relates to a sample processing device including first and second opposing ends; a plurality of unvented process arrays, each of the process arrays including a loading chamber located proximate the first end; a main conduit extending towards the second end; and a plurality of process chambers distributed along the main conduit, wherein the main conduit is in fluid communication with the loading chamber and the plurality of process chambers; and wherein each of the process chambers is in fluid communication with one of the main conduits through a feeder conduit, and wherein the feeder conduits form feeder conduit angles with the main conduits that are less than 90 degrees.
- These and other features and advantages of the present invention are described below in connection with various illustrative embodiments of the devices and methods according to the present invention.
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Figure 1 is a plan view of one sample processing device. -
Figure 2 is an enlarged partial cross-sectional view of one process array on a sample processing device. -
Figure 3 is an enlarged partial cross-sectional view of the process array ofFigure 2 depicting one method of sealing the main conduit. -
Figure 4 is a plan view of one centrifuge system for rotating sample processing devices. -
Figure 5 is a plan view of a portion of an alternative process array. -
Figure 6 is a cross-sectional view taken along line 6-6 inFigure 5 . -
Figure 7 is a cross-sectional view taken along line 7-7 inFigure 6 . -
Figure 8 depicts an alternative set of process arrays for a sample processing device. -
Figure 9 depicts an alternative set of process arrays for a sample processing device. -
Figure 10 is a perspective view of a sample processing device in which the loading chambers are being separated from the remainder of the sample processing device. -
Figure 11 is a perspective view of the sample processing device ofFigure 10 after sealing. -
Figure 12 is a plan view of another sample processing device according to the background of the invention. -
Figure 13 is a side view of the sample processing device ofFigure 12 after folding the device along a line separating the loading chambers from the process chambers. -
Figure 14 depicts a sample processing device located within a compression device. -
Figure 15 is a plan view of an alternative compression device. -
Figure 16 is a cross-sectional view taken along line 16-16 inFigure 15 . -
Figure 17 is an exploded perspective view of an assembly including a sample processing device and a carrier. -
Figure 18 is a perspective view of the carrier ofFigure 18 taken from the side of the carrier facing the sample processing device. -
Figure 19 is a partial cross-sectional view of a sample processing device and carrier including an optical element. - The present invention provides a sample processing device that can be used in the processing of liquid sample materials (or sample materials entrained in a liquid) in multiple process chambers to obtain desired reactions, e.g., PCR amplification, ligase chain reaction (LCR), self-sustaining sequence replication, enzyme kinetic studies, homogeneous ligand binding assays, and other chemical, biochemical, or other reactions that may, e.g., require precise and/or rapid thermal variations. More particularly, the present invention provides sample processing devices in which sample material is delivered to the process chambers by rotating the devices. The methods may also include sealing of the sample processing devices after sample material distribution.
- Although various constructions of illustrative embodiments are described below, sample processing devices of the present invention may be manufactured according to the principles described in
U.S. Provisional Patent Application Serial No. 60/214,508 filed on June 28, 2000 U.S. Provisional Patent Application Serial No. 60/214,642 filed on June 28, 2000 U.S. Provisional Patent Application Serial No. 60/237,072 filed on October 2, 2000 - The documents identified above all disclose a variety of different constructions of sample processing devices that could be used to manufacture sample processing devices according to the principles of the present invention. For example, although many of the sample processing devices described herein are attached using adhesives (e.g., pressure sensitive adhesives), devices of the present invention could be manufactured using heat sealing or other bonding techniques.
- One illustrative sample processing device manufactured according to the principles of the present invention is illustrated in
Figures 1 and2 . Thesample processing device 10 includes at least one, and preferably a plurality ofprocess arrays 20. Each of theprocess arrays 20 extends from proximate afirst end 12 towards thesecond end 14 of thesample processing device 10. - The
process arrays 20 are depicted as being substantially parallel in their arrangement on thesample processing device 10. Although this arrangement may be preferred, it will be understood that any arrangement ofprocess arrays 20 that results in their substantial alignment between the first and second ends 12 and 14 of thedevice 10 is sufficient. - Alignment of the
process arrays 20 between the first and second ends 12 and 14 is important because sample materials are distributed throughout the sample processing device by rotation about an axis of rotation proximate thefirst end 12 of thedevice 10. When so rotated, any sample material located proximate thefirst end 12 is driven toward thesecond end 14 by centrifugal forces developed during the rotation. - Each of the
process arrays 20 includes at least oneloading chamber 30, at least onemain conduit 40, and a plurality ofprocess chambers 50 located along eachmain conduit 40. It may be preferred that each of the process arrays include only oneloading chamber 30 and only onemain conduit 40. Theprocess chambers 50 are in fluid communication with themain conduit 40 throughfeeder conduits 42. As a result, theloading chamber 30 in each of theprocess arrays 20 is in fluid communication with each on theprocess chambers 50 located along themain conduit 40 leading to theloading chamber 30. Each of theprocess arrays 20 depicted inFigure 1 also includes anoptional drain chamber 22 located at the end of themain conduit 40. - Each of the
loading chambers 30 includes aninlet port 32 for receiving sample material into theloading chamber 30. The sample material may be delivered toport 32 by any suitable technique and/or equipment. A pipette 11 is depicted inFigure 1 , but is only one technique for loading sample material into theloading chambers 30. The pipette 11 may be operated manually or may be part of an automated sample delivery system for loading the sample material into loading chambers 30 asample processing device 10. - Each of the
process arrays 20 in thesample processing devices 10 of the present invention are preferably unvented. As used in connection with the present invention, an "unvented" process array is a process array in which the only ports leading into the volume of the process array are located in a loading chamber of the process array. In other words, to reach the process chambers within an unvented process array, sample materials must be delivered to the loading chamber through a port located in the loading chamber. Similarly, any air or other fluid located within the process array before loading with sample material must also escape from the process array through a port or ports located in the loading chamber. In contrast, a vented process array would include at least one opening outside of the loading chamber. That opening would allow for the escape of any air or other fluid located within the process array before loading during distribution of the sample material within the process array. - As seen in
Figure 2 , theprocess chamber 50 defining avolume 52 that may include areagent 54. It may be preferred that at least some, and preferably all, of theprocess chambers 50 in thedevices 10 of the present invention contain at least one reagent before any sample material is distributed. Thereagent 54 may be fixed within theprocess chamber 50 as depicted inFigure 2 . Thereagent 54 is optional, i.e.,sample processing devices 10 of the present invention may or may not include anyreagents 54 in theprocess chambers 50. In another variation, some of theprocess chambers 50 may include areagent 54, while others do not. In yet another variation,different process chambers 50 may contain different reagents. - Other features depicted in the
sample processing device 10 are a firstmajor side 16 and a secondmajor side 18, between which thevolume 52 ofprocess chamber 50 is formed. Also depicted inFigure 2 is a portion offeeder conduit 42 used to deliver sample material to theprocess chamber 50. Themajor sides device 10 may be manufactured of any suitable material or materials. Examples of suitable materials include polymeric materials (e.g., polypropylene, polyester, polycarbonate, polyethylene, etc.), metals (e.g., metal foils), etc. - It may be preferred that at least one of the first and second
major sides major sides process chambers 50. - It may also be preferred that at least one of the first and second
major sides loading chambers 30,main conduits 40,feeder conduits 42, and/orprocess chambers 50 to prevent contamination of the sample materials. - In the illustrative embodiment of the sample processing device depicted in
Figures 1 and2 , the firstmajor side 16 is preferably manufactured of a polymeric film (e.g., polypropylene) that is formed to provide structures such as theloading chambers 30,main conduit 40,feeder conduits 42, andprocess chambers 50. The secondmajor side 18 is preferably manufactured of a metallic foil, e.g., an aluminum or other metal foil. The metallic foil is preferably deformable as discussed in more detail below. - The first and second
major sides major sides Figure 2 , the adhesive may preferably be provided in the form of a layer ofadhesive 19. It may be preferred that theadhesive layer 19 be provided as a continuous, unbroken layer over the surface of at least one of the first and secondmajor sides adhesive layer 19 be provided on the metallic foil ofmajor side 18. - A variety of adhesives may be used, although any adhesive selected should be capable of withstanding the forces generated during processing of any sample materials located in the
process chambers 50. Those forces may be large where, e.g., the processing involves thermal cycling as in, e.g., polymerase chain reaction and similar processes. The adhesives may include, e.g., hot melt adhesives, curable adhesives, pressure sensitive adhesives, etc. - Among the pressure sensitive adhesives that may be used in connection with the sample processing devices of the present invention are those that are resistant to high temperatures and humidity. It may, for example, be preferred to use silicone pressure sensitive adhesives. Examples of some suitable silicone-based pressure sensitive adhesives are silicone-polyurea compositions as described in, e.g.,
U.S. Patents 5,461,134 and6,007,914 or International Publication No.WO 96/35458 - It may be preferred that all features, e.g.,
loading chambers 30,main conduit 40,feeder conduit 42,process chambers 50, and drainchambers 22, be formed in the firstmajor side 16 while the secondmajor side 18 is substantially flat. By locating all of the features in one side of thesample processing device 10, the need for aligning the two sides together before attaching them may be eliminated. Furthermore, a flat secondmajor side 18 may promote intimate contact with, e.g., a thermal block such as that used in thermal cycling equipment. Alternatively, however, it will be understood that features may be formed in bothsides - Another potential feature of the sample processing devices of the invention is isolation of the
process chambers 50 by closing the fluid pathways in thedevices 10. Referring now toFigures 2 and 3 , theprocess chambers 50 may be isolated after distribution of any sample materials by deforming the secondmajor side 18 such that it extends into one or both of themain conduits 40 or thefeeder conduits 42 in each of theprocess arrays 20.Figure 3 illustrates one such closure method where the secondmajor side 18 is deformed into themain conduit 40, with theadhesive layer 19 located between the two sides. - The desire to hermetically seal fluid pathways in the
sample processing devices 10 of the present invention may lead towards the use of pressure sensitive adhesive for theadhesive layer 19. Where a pressure sensitive adhesive is present between the first and secondmajor sides major side 18 may result in adhesion between the first and secondmajor sides - After distribution of sample materials into the
process chambers 50 is completed, it may be desirable to isolate theprocess chambers 50 from each other. Isolation may be accomplished in a variety of manners. For example, isolation of theprocess chambers 50 may involve deformation of thefeeder conduits 42 and/ormain conduits 40 within each of theprocess arrays 20. - For those sample processing devices that include a metallic layer, isolation of the
process chambers 50 may involve plastic deformation of the metallic layer to close themain conduits 40 and/orfeeder conduits 42. If, for example, a pressuresensitive adhesive 19 is used to attach the first and secondmajor sides main conduits 40 and/orfeeder conduits 42 by adhering the deformed first and secondmajor sides - It should be understood, however, that complete sealing of the deformed portions of the
sample processing device 10 may not be required. For example, it may only be required that the deformation restrict flow, migration or diffusion through a conduit or other fluid pathway sufficiently to provide the desired isolation. - In one method in which the
process arrays 20 are closed after distribution of sample materials intoprocess chambers 50, it may be necessary to deform only a portion of themain conduit 40 or, alternatively, the entire length of thedistribution channel 40. Where only a portion of themain conduit 40 is deformed, it may be preferred to deform that portion of themain conduit 40 located proximate theloading chamber 30. - Sealing all of the
main conduit 40 by forcing thesides conduit 40 may provide advantages such as driving any fluid located in themain conduit 40 back into theloading chamber 30. One potential advantage, however, of sealing only a portion of themain conduit 40 is that either none or only a small amount of any fluid material located in themain conduit 40 would be returned to theloading chamber 30. - Methods of distributing sample materials by rotating a sample processing device according to the present invention will now be described with reference to
Figure 4 . After providing a sample processing device 10' that includes first and second opposing ends 12' and 14' with at least one process array 20' aligned between the ends 12' and 14' of the device 10', sample material may be delivered to the process chambers 50'of the process array 20' by rotating. It should be noted that the sample processing device 10' includes only one process array 20' with a single loading chamber 30' connected to the process chambers 50' along twomain conduits 40'. - The amount of sample material delivered to each of the loading chambers on the devices 10' may vary. It may, however, be preferred that the volume of sample material delivered to each of the loading chambers is no greater than the combined volumes of any main conduits, feeder conduits, and process chambers in fluid communication with the loading chamber. Where an optional drain chamber (see, e.g.,
Figure 1 ) is located at the distal and of the process array, the amount of sample material delivery to each of the loading chambers may be increased to compensate for the additional volume of the process array downstream from the loading chamber. - After the loading chambers contain the desired sample material, that sample material must be transported to the process chambers within each of the process arrays. Referring to
Figure 4 , the distribution of sample material is effected by rotating the sample processing device 10' about an axis of rotation 15' located proximate the first end 12' of the sample processing device 10'. Rotation of the device 10' about the axis of rotation 15'when so oriented will result in centrifugal forces on any sample materials located within the loading chamber 30'. The centrifugal forces will drive the sample material out of the loading chamber 30' and into themain conduits 40' for delivery to the process chambers 50'. - The sample processing device 10' is oriented such that the process chambers 50' are located further from the axis of rotation 15'than the loading chamber 30'. The sample processing device 10' is located on a platter 17' that rotates about the axis 15'. The platter 17' may preferably be capable of accepting more than one sample processing device 10' for simultaneous rotation about axis 15'.
- The orientation of the sample processing devices relative to the axis of rotation 15' is not critical, provided that the process chambers are located further from the axis of rotation 15' than the loading chambers. For example, where the sample processing device 10' is in the form of a substantially flat card-like article, the edge of the first end 12' of the sample processing device 10' may be oriented substantially perpendicular to the axis of rotation as depicted in
Figure 4 . Alternatively, the axis of rotation 15' may be substantially aligned with (e.g., parallel to) the edge of the first end 12' of thesample processing device 10. A multitude of orientations of the first end 12' relative to the axis 15' can be envisioned between parallel and perpendicular, all of which are acceptable as long as the process chambers are distal from the axis 15'relative to the loading chambers on the devices. - Because the process arrays of sample processing devices according to the present invention are preferably unvented as described above, distribution of sample materials to the process chambers may be difficult due to the air or other fluids trapped within the process chambers. Among the techniques that may be used to assist in distribution of the sample materials are selection of the materials used to construct the sample processing device, the addition of materials to the sample material (e.g., the addition of a surfactant to reduce surface tension in the sample material), manipulation of the viscosity of the sample material (e.g., by heating), etc.
- One advantage of centrifugal loading of sample materials into process chambers is the ability to rotate the sample processing device and inspect the device after an initial period of rotation to determine whether sample material has been adequately distributed to the process chambers. If distribution is not satisfactory, the sample processing device can be rotated again until satisfactory sample material distribution is obtained.
- In addition to, or in place of, a sequential rotate-inspect-rotate approach, the methods of the present invention may also employ two or more acceleration/deceleration cycles to assist in distribution of sample materials from the loading chambers to the process chambers. Alternating acceleration and deceleration of the device during rotation may essentially burp the sample materials through main conduit and feeder conduits (if any) into process chambers. It may also be helpful if the acceleration and/or deceleration are rapid. The rotation may also preferably only be in one direction or it may be in opposite directions.
- The actual acceleration and deceleration rates may vary based on a variety of factors such as temperature, size of the sample processing device, size of the conduits and chambers, distance of the sample material from the axis of rotation, materials used to manufacture the devices, properties of the sample materials (e.g., viscosity), etc. one example of a useful acceleration/deceleration cycle may include an initial acceleration to about 4000 revolutions per minute (rpm), followed by deceleration to about 1000 rpm over period of about 1 second, with oscillations in rotational speed of the device between 1000 rpm and 4000 rpm at 1 second intervals until a sample materials are distributed.
- In addition to constant speed rotation and acceleration/deceleration cycling during rotation, the methods of the present invention may also include vibration of the sample processing device to assist in the distribution of sample materials into process chambers. Vibration, such as tapping, high frequency oscillations, etc., may assist in removal of entrapped air bubbles located within the conduits or process chambers. Vibration of the sample processing device may be employed before or after rotation, or it may be employed during rotation of the sample processing device about the axis of rotation.
- Although the process chambers illustrated in
device 10 ofFigure 1 appear substantially circular in shape, it should be understood that the process chambers used in sample processing devices of the present invention may take any suitable shape. One example of an alternative shape is depicted inFigure 5 in which theprocess chambers 150 are in the form of oval shapes that are elongated alongaxis 151. Theaxis 151 is preferably generally aligned with themain conduit 140. As a result, theaxis 151 will generally extend from the first end of the sample processing device to its second end, with the oval shapes ofprocess chambers 150 having their largest dimension aligned between the first and second ends of the sample processing device. -
Figure 5 also depictsfeeder conduits 142 that are preferably angled off of themain conduit 140 and adjoin theprocess chambers 150 at one end. It may be further preferred that thefeeder conduits 142 meet theprocess chambers 150 at the end closest to the first end of the sample processing device (which is, therefore, the end of the process chamber that is closest to the axis of rotation during loading). Entry of thefeeder conduits 142 into theprocess chambers 150 at the end may facilitate removal of air within thechambers 150 during loading. - The feeder conduit angle β, i.e., the included angle formed between the
feeder conduits 142 and themain conduit 140, may also enhance filling of theprocess chambers 150 by promoting the removal of the air. It may, for example, be preferred that the feeder conduit angle be less than 90 degrees, more preferably less than 75 degrees. The feeder conduit angle will always be measured between the side of thefeeder conduit 142 facing away from the first end of the device and themain conduit 140. - Another potentially advantageous optional feature illustrated in
Figure 5 is the longitudinal offset of thefeeder conduits 142 on opposing sides of the main conduit 140 (as opposed to the cross-conduit alignment of thefeeder conduits 42 inFigure 1 ). That offset between the points at which the opposingfeeder conduits 142 join themain conduit 140 may assist in preventing cross-chamber contamination during filling and/or processing. -
Figures 6 and 7 , in conjunction withFigure 5 , illustrate yet another optional feature of the sample processing devices of the present invention.Figure 6 is a cross-sectional view ofFigure 5 taken along line 6-6 inFigure 5 and Figure 7 is a cross-sectional view ofFigure 6 taken along line 7-7 inFigure 6 . The figures illustrate the smaller cross-sectional area of thefeeder conduit 142 as compared to themain conduit 140. The different cross-sectional area of theconduits process chambers 150 into themain conduit 140 after and/or during filling. By limiting diffusion, cross-chamber contamination may also be reduced. -
Figure 8 is a schematic diagram illustrating another arrangement forprocess arrays 220 useful in sample processing devices. Among the features depicted in connection withprocess arrays 220 are the staggered relationship betweenloading chambers 230. Such a staggered relationship may improve the density or spacing betweenprocess chambers 250. - Each of the
loading chambers 230 also includes aloading port 232 and avent port 234 which may facilitate rapid filling of theloading chambers 230 by providing a pathway separate from theloading port 232 for air to escape during filling of theloading chamber 230. - Another feature depicted in
Figure 8 is the serial relationship between theprocess chambers 250 located along each of themain conduits 240. Each pair ofsuccessive process chambers 250 is in fluid communication with each other alongmain conduit 240. As a result, if any reagents or other materials are to be located withinprocess chambers 250 before distribution of the sample material, then some mechanism or technique for preventing removal of those materials during distribution of the sample material must be provided. For example, the reagents may be contained in a wax or other substance within each of theprocess chambers 250. -
Figure 9 is a schematic diagram illustrating yet another arrangement ofprocess arrays 320 that may be used in connection with sample processing devices of the present invention. Each of theprocess arrays 320 includes aloading chamber 330 that, in turn, includes aloading port 332 and avent port 334. Theloading chambers 330 are in fluid communication with a plurality ofprocess chambers 350 throughmain conduits 340. - One feature illustrated in connection with
Figure 9 is the addition ofvalves 344 along themain conduits 340. Each of themain conduits 340 bifurcates to an individual subset ofprocess chambers 350. By selectively opening or closing the valves 344 (which may be either closed or open when manufactured) the delivery of sample material to each subset ofprocess chambers 350 may be enabled or prevented. For example, if one of thevalves 344 is open while theother valve 344 is closed, delivery of sample material will be effected only to one subset of process chambers 350 (through the open valve 344). - It may be possible to achieve the same result, i.e., enabling or preventing delivery of sample material to a subset of
process chambers 350, by sealing themain conduit 340 at an appropriate location after the bifurcation point. The use ofvalves 344 may, however, provided the ability for automated control or customization of the sample processing device includingprocess arrays 320. Thevalves 344 may take any suitable form, some examples of which are described in the patent applications identified above. - By using
customizable process arrays 320, it may be possible to provide sample processing devices that are tailored at the point of use for particular testing needs. Other advantages may be found in the ability to reduce the volume of sample material needed by reducing the number ofprocess chambers 350 to which that sample material may be delivered. Alternatively, where a higher level of confidence is required, thevalves 344 may be opened to increase the number ofprocess chambers 350 to which sample material is delivered, thereby increasing the number of tests performed. - Referring now to
Figure 10 , another optional feature of the present invention is separation of theloading chambers 430 from the remainder of thesample processing device 410. Separation of the loading portion of thesample processing device 410 from the portion containing theprocess chambers 450 may provide advantages such as, for example, reducing the size of thesample processing device 410, reducing the thermal mass of thesample processing device 410, removing any sample materials that may remain within theloading chambers 430 after distribution to processchambers 450, etc. - Separation of the
loading chambers 430 from thesample processing device 410 may involve, for example, cutting thesample processing device 410 along theseparation line 413 as depicted inFigure 10 . Where theloading chambers 430 are to be physically separated from the remainder of thesample processing device 410, it is typically preferable that themain conduits 440 be sealed across at least theseparation line 413 to prevent leakage of the sample materials during and after the separation process. - The use of a pressure sensitive adhesive within the main conduits 440 (see, e.g.,
Figures 2 and 3 ) may be particularly helpful to ensure adequate sealing of the main conduits. In addition to, or in place of, pressure sensitive adhesives within theconduits 440, it may be desirable to further seal themain conduits 440 by, e.g., the application of heat and/or pressure to bond the conduit closed. - If additional sealing is required, it may also be helpful to cover the ends of the main conduits with a
seal 444 as illustrated inFigure 11 . The seal may be provided, e.g., in the form of an adhesive coated foil or other material. Alternatively or in addition to the use of an adhesive to secure theseal 444, it may be desirable to, e.g., heat seal theseal 444 in place on thesample processing device 410. - Referring now to
Figures 12 and 13 , one alternative according to the background of the invention to physical separation of theloading chambers 530 from the remainder of thesample processing device 510 may include folding thesample processing device 510 along, e.g.,separation line 513. That folding process may also close themain conduit 540 across theseparation line 513 by crimping themain conduits 540, such that a desired level isolation may be achieved between theprocess chambers 550 without further deformation of any of themain conduits 540 or thefeeder conduits 542. - It may be desirable to provide crimping
areas 546 located at the intersections of themain conduits 540 with thefolding line 513 that are wider and shallower than the surrounding portions ofconduits 540 to facilitate crimping of theconduits 540 during folding. The wider, shallower crimpingareas 546 do, however, preferably provide a cross-sectional area for fluid flow that is similar to the cross-sectional fluid flow area of the surrounding portions of themain conduits 540. - The centrifugal forces developed during rotation of the sample processing devices to deliver the sample materials to process chambers may challenge the sealing of the process chambers and other fluid pathways in each of the process arrays. The challenges may be especially acute when the sample processing device is constructed using an adhesive to attach to layers together.
- To assist with the sealing of the process chambers and other fluid pathways on the sample processing devices during rotation, it may be advantageous to compress the major sides of the sample processing devices together during rotation. Referring to
Figure 14 , thesample processing device 610 may, for example, be located within a compression device 660 (e.g., in the form of a clamshell or other suitable structure) that compresses the major sides of thesample processing device 610 together during rotation. Thecompression device 660 may, for example, includeconformable material 662 in contact with one side of thesample processing device 610. Theconformable material 662 may, for example be a resilient foam or similar composition. - Also included in the
compression device 660 is a base 664 in contact with the opposing side of thesample processing device 610. As theconformable material 662 and the base 664 are biased toward each other, the major sides of thesample processing device 610 are compressed. That compression may significantly reduce or prevent leakage of any sample materials out of the process chambers or other fluid pathways during rotation of thesample processing device 610. - The
conformable material 662 is preferably located in contact with the side of thedevice 610 that includes any structures such as process chambers or conduits protruding therefrom to avoid damaging those structures. The base 664 may be formed of any suitable material which may be rigid where no structures are protruding from the side of thedevice 610 facing thebase 664. - A portion of an alternative compression device is depicted in
Figures 15 and 16 in connection with a process chamber 650' and portion of a feeder conduit 642'. The alternative compression device is designed to provide pressure. The compression device includes a shaped compression die 662' that applies pressure along a discrete area or areas located about the periphery of the process chamber 650' and the feeder conduit 642'. The compression die 662' preferably acts against a base 664' located on the opposite side of the sample processing device. Departing from the design of the compression device depicted inFigure 14 , the compression die 662' may preferably be formed of a substantially rigid material -
Figure 17 is an exploded perspective view of an assembly including asample processing device 710 of the present invention and acarrier 780. Because, in many instances, thesample processing devices 710 are manufactured from materials that are relatively thin, it may be desirable to attach thedevice 710 to acarrier 780 for a variety of reasons. Among those reasons are the need to provide an assembly having sufficient thickness to be processed in existing thermal processing equipment with a minimum of modification to that equipment. - By providing a
carrier 780 that is separate from thesample processing device 710, the thermal mass of thesample processing device 710 can be minimally affected as compared to manufacturing the entiresample processing device 710 with a thickness suitable for processing in conventional equipment. Another potential advantage of acarrier 780 is that thesample processing devices 710 may exhibit a tendency to curl or otherwise deviate from a planar configuration. Attaching thedevice 710 to arigid carrier 780 can retain the sample processing device in a planar configuration for processing. - The
carrier 780 may be attached to thesample processing device 710 in a manner that allows for thecarrier 780 to be reused with many differentsample processing devices 710. Alternatively, eachcarrier 780 may be permanently attached to a singlesample processing device 710 such that, after use, both thesample processing device 710 and thecarrier 780 are discarded together. - The
sample processing device 710 may be manufactured as described above. Thecarrier 780 may include various features such ascarrier openings 782 that are preferably aligned with the plurality ofprocess chambers 750 in thedevice 710. By providingcarrier openings 782, theprocess chambers 750 can be viewed from the side of thesample processing device 710 facing thecarrier 780. One alternative to providing the plurality ofcarrier openings 782 is to manufacture thecarrier 780 of a material (or materials) transmissive to electromagnetic radiation in the desired wavelengths. As a result, it may be possible to use acarrier 780 that is contiguous over the surface of thesample processing device 710, i.e., the carrier provides no openings for access to theprocess chambers 750. - The
carrier 780 illustrated inFigures 17 and18 may also provide advantages in the sealing or isolation of theprocess chambers 750 after loading.Figure 18 illustrates therails 783 in thecarrier 780 that extend along the length of themain conduits 740 in the associatedsample processing device 710. Therails 783 may, for example, provide a surface against which themain conduits 740 of thesample processing device 710 may be pressed while the conduit is deformed to isolate theprocess chambers 750 and/or seal theconduits 740 prior to separating theloading chambers 730 from thedevice 710. - In addition to their use during deformation of the
main conduits 740, therails 783 may also be relied on during, e.g., thermal processing to apply pressure to the conduits 740 (thereby potentially improving the seals formed along the main conduits 740). Furthermore, the use ofrails 783 also provides an additional advantage in that they provide for significantly reduced contact between thesample processing device 710 and thecarrier 780 while still providing the necessary support for sealing of themain conduits 740 ondevice 710. The importance of reducing contact between thecarrier 780 anddevice 710 may be particularly important when the assembly is to be used in thermal processing of sample materials (e.g., polymerase chain reaction, etc.). As such, thecarrier 780 may be characterized including a carrier body that is spaced from thesample processing device 710 between themain conduits 740 when therails 783 are aligned with themain conduits 740. The voids formed between the carrier body and thesample processing device 710 may be occupied by air or by, e.g., a resilient and/or thermally insulating material. - Various alignment features are also illustrated in
Figures 17 and18 , including structures that align thesample processing device 710 relative to thecarrier 780, as well as structures that align the assembly ofsample processing device 710 andcarrier 780 relative to, e.g., a thermal processing system used to thermally cycle materials in thesample process chambers 750. Alignment may also be used in connection with a detection system for detecting the presence or absence of a selected analyte in theprocess chambers 750. - It may be preferred that the
sample processing device 710 be aligned relative to thecarrier 780 proximate a center of both of those articles (center 781 ofcarrier 780 being indicated inFigure 17 ). To prevent rotation of thesample processing device 710 relative to thecarrier 780, at least two points of registration or contact are required. Because thedevice 710 andcarrier 780 may be subjected to temperature extremes during processing, it may be desirable, for example, that thesample processing device 710 be fixedly connected tocarrier 780 in the center of the two articles, while any additional points of attachment provide for differential expansion/contraction between thedevice 710 andcarrier 780. - The alignment structures used to align the assembly as a whole to, e.g., thermal cycling and/or detection equipment, include
protrusions 774 that are preferably designed to extend throughalignment openings 776 in thesample processing device 710. As a result, alignment of the assembly is based on structures found incarrier 780. One advantage to relying on thecarrier 780 for alignment structures is that its construction will typically being more dimensionally stable and accurate as compared to thesample processing device 710. -
Figure 19 illustrates yet another optional feature of carriers used in connection with the present invention. Thecarrier 880 is depicted with anoptical element 888, e.g., a lens, that may assist in focusing electromagnetic energy directed into theprocess chamber 850 or emanating from theprocess chamber 850. Theoptical element 888 is depicted as integral with thecarrier 880, although it should be understood that theoptical element 888 may be provided as a separate article that is attached to thecarrier 880.
Claims (5)
- A method of distributing sample material in a sample processing device, the method comprising:providing a sample processing device that comprises first and second opposing ends and at least one unvented process array comprising a loading chamber located proximate the first end, a main conduit extending towards the second end, and a plurality of process chambers distributed along the main conduit, wherein the main conduit is in fluid communication with the loading chamber and the plurality of process chambers, and wherein access to the interior volume of the at least one process array is available only through the loading chamber; loading sample material in the loading chamber of each of the process arrays; andtransporting the sample material to at least some of the process chambers by rotating the sample processing device about an axis of rotation located proximate the first end of the sample processing device, wherein the process chambers are located further from the axis of rotation than the loading chambers;physically separating the loading chambers from the sample processing device after transporting the sample material to the process chambers.
- A method according to claim 1, further comprising closing the main conduits between the loading chambers and the plurality of process chambers after transporting the sample material and before separating the loading chambers.
- A method according to claim 1, further comprising vibrating the sample processing device while rotating the sample processing device about the axis of rotation located proximate the first end of the sample processing device.
- The method according to claim 1, wherein each of the process chambers is in fluid communication with the main conduit through a feeder conduit, and further wherein the feeder conduits from feeder conduit angels with the main conduit that are less than 90 degrees.
- A method according to claim 1, wherein the rotating during transporting the sample material comprises at least two acceleration/deceleration cycles.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2001/050114 WO2003057369A1 (en) | 2001-12-21 | 2001-12-21 | Centrifugal filling of sample processing devices |
Publications (2)
Publication Number | Publication Date |
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EP1458482A1 EP1458482A1 (en) | 2004-09-22 |
EP1458482B1 true EP1458482B1 (en) | 2012-03-14 |
Family
ID=21743162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP01992323A Expired - Lifetime EP1458482B1 (en) | 2001-12-21 | 2001-12-21 | Centrifugal filling of sample processing devices |
Country Status (6)
Country | Link |
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EP (1) | EP1458482B1 (en) |
JP (1) | JP4181046B2 (en) |
AT (1) | ATE549084T1 (en) |
AU (1) | AU2002232786A1 (en) |
CA (1) | CA2470350C (en) |
WO (1) | WO2003057369A1 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
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US7460223B2 (en) | 2003-09-19 | 2008-12-02 | Applied Biosystems Inc. | Inverted orientation for a microplate |
JP3910208B2 (en) * | 2005-01-24 | 2007-04-25 | 松下電器産業株式会社 | Liquid feeding device and liquid feeding method |
TW200712495A (en) * | 2005-08-02 | 2007-04-01 | 3M Innovative Properties Co | Apparatus and method for detecting an analyte |
TW200714898A (en) | 2005-08-02 | 2007-04-16 | 3M Innovative Properties Co | Apparatus and method for detecting an analyte |
ATE432125T1 (en) * | 2006-02-09 | 2009-06-15 | Hoffmann La Roche | 3D STRUCTURES BASED ON 2D SUBSTRATES |
EP1878497A1 (en) | 2006-07-14 | 2008-01-16 | Roche Diagnostics GmbH | Disposable for analyzing a liquid sample by nucleic acid amplification |
AU2009240461A1 (en) | 2008-04-24 | 2009-10-29 | 3M Innovative Properties Company | Analysis of nucleic acid amplification curves using wavelet transformation |
JP5131538B2 (en) * | 2008-05-07 | 2013-01-30 | セイコーエプソン株式会社 | Reaction liquid filling method |
US8546129B2 (en) | 2009-03-31 | 2013-10-01 | Toppan Printing Co., Ltd. | Sample analysis chip, sample analyzer using sample analysis chip, sample analysis method, and method of producing sample analysis chip |
TWI523950B (en) | 2009-09-30 | 2016-03-01 | 凸版印刷股份有限公司 | Nucleic acid analysis apparatus |
JP2013542445A (en) * | 2010-11-10 | 2013-11-21 | ベーリンガー インゲルハイム マイクロパーツ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Blood filtration equipment |
CN102886280B (en) * | 2012-08-28 | 2014-06-11 | 博奥生物有限公司 | Microfluidic chip and application thereof |
EP3447117B1 (en) * | 2016-04-20 | 2020-12-02 | Sysmex Corporation | Nucleic acid analysis device and nucleic acid analysis method |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6319469B1 (en) * | 1995-12-18 | 2001-11-20 | Silicon Valley Bank | Devices and methods for using centripetal acceleration to drive fluid movement in a microfluidics system |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US4390499A (en) * | 1981-08-13 | 1983-06-28 | International Business Machines Corporation | Chemical analysis system including a test package and rotor combination |
US5288463A (en) * | 1992-10-23 | 1994-02-22 | Eastman Kodak Company | Positive flow control in an unvented container |
WO1994026414A1 (en) * | 1993-05-17 | 1994-11-24 | Syntex (U.S.A.) Inc. | Reaction container for specific binding assays and method for its use |
US5639428A (en) * | 1994-07-19 | 1997-06-17 | Becton Dickinson And Company | Method and apparatus for fully automated nucleic acid amplification, nucleic acid assay and immunoassay |
JP2002503331A (en) * | 1995-12-05 | 2002-01-29 | ガメラ バイオサイエンス コーポレイション | Apparatus and method for using centripetal acceleration to drive liquid transfer in a microfluidic device engineering system with onboard information science |
WO2001007892A1 (en) * | 1999-07-27 | 2001-02-01 | Esperion Therapeutics, Inc. | Method and device for measurement of cholesterol efflux |
-
2001
- 2001-12-21 CA CA2470350A patent/CA2470350C/en not_active Expired - Fee Related
- 2001-12-21 WO PCT/US2001/050114 patent/WO2003057369A1/en active Application Filing
- 2001-12-21 AU AU2002232786A patent/AU2002232786A1/en not_active Abandoned
- 2001-12-21 JP JP2003557716A patent/JP4181046B2/en not_active Expired - Fee Related
- 2001-12-21 AT AT01992323T patent/ATE549084T1/en active
- 2001-12-21 EP EP01992323A patent/EP1458482B1/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6319469B1 (en) * | 1995-12-18 | 2001-11-20 | Silicon Valley Bank | Devices and methods for using centripetal acceleration to drive fluid movement in a microfluidics system |
Also Published As
Publication number | Publication date |
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WO2003057369A1 (en) | 2003-07-17 |
JP2005537911A (en) | 2005-12-15 |
ATE549084T1 (en) | 2012-03-15 |
AU2002232786A1 (en) | 2003-07-24 |
EP1458482A1 (en) | 2004-09-22 |
CA2470350A1 (en) | 2003-07-17 |
CA2470350C (en) | 2010-11-09 |
JP4181046B2 (en) | 2008-11-12 |
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