Patent Grant
9335338
The present disclosure relates generally to automated diagnostic analyzers and, more particularly, to automated diagnostic analyzers having rear accessible track systems and related methods.
Healthcare diagnostics laboratories use diagnostic instruments for testing and analyzing specimens or samples. Known automated diagnostic analyzers employ multiple carousels and multiple pipetting mechanisms to automatically aspirate liquid from and dispense liquid to different areas in the analyzer to perform diagnostic analysis procedures. The carousels may include a carousel for reaction vessels and a carousel for reagents. By arranging multiple containers on the respective carousels, these known analyzers are capable of conducting multiple assays on multiple test samples as the carousels rotate. These analyzers typically include a pipetting mechanism that aspirates a sample from a sample container and dispenses the sample into one or more reaction vessels on one of the carousels. A robotic device is utilized to individually transport a single sample container at a time to a region near the sample pipetting mechanism for aspiration.
Certain examples are shown in the above-identified figures and described in detail below. In describing these examples, like or identical reference numbers are used to identify the same or similar elements. The figures are not necessarily to scale and certain features and certain views of the figures may be shown exaggerated in scale or in schematic for clarity and/or conciseness. Additionally, several examples have been described throughout this specification. Any features from any example may be included with, a replacement for, or otherwise combined with other features from other examples.
Diagnostics laboratories employ diagnostic instruments such as those for testing and analyzing specimens or samples including, for example, clinical chemistry analyzers, immunoassay analyzers and hematology analyzers. Specimens and biological samples are analyzed to, for example, check for the presence or absence of an item of interest including, for example, a specific region of DNA, mitochondrial DNA, a specific region of RNA, messenger RNA, transfer RNA, mitochondrial RNA, a fragment, a complement, a peptide, a polypeptide, an enzyme, a prion, a protein, an antibody, an antigen, an allergen, a part of a biological entity such as a cell or a viron, a surface protein, and/or functional equivalent(s) of the above. Specimens such as a patient's body fluids (e.g., serum, whole blood, urine, swabs, plasma, cerebra-spinal fluid, lymph fluids, tissue solids) can be analyzed using a number of different tests to provide information about the patient's health.
Generally, analysis of a test sample involves the reaction of test samples with one or more reagents with respect to one or more analytes. The reaction mixtures are analyzed by an apparatus for one or more characteristics such as, for example, the presence and/or concentration of a certain analyte in the test sample. Use of automated diagnostic analyzers improves the efficiency of the laboratory procedures as the technician (e.g., an operator) has fewer tasks to perform and, thus, the potential for operator or technician error is reduced. In addition, automated diagnostic analyzers also provide results much more rapidly and with increased accuracy and repeatability.
Automated diagnostic analyzers use multiple pipettes to move liquids between storage containers (e.g., receptacles such as open topped tubes) and containers in which the specimens are to be processed (e.g., reaction vessels). For example, a specimen may be contained in a tube that is loaded in a rack on an analyzer, and a head carrying a pipette moves the pipette into the tube where a vacuum is applied to extract a selected amount of the specimen from the tube into the pipette. The head retracts the pipette from the tube and moves the pipette to another tube or reaction vessel located at a processing station, depositing the extracted amount of the specimen from the pipette into the reaction vessel. A reagent is similarly acquired from a reagent supply.
In other examples, a track or positioner (e.g., a robotic device) is disposed at the front of an analyzer to move a sample tube or a sample carrier to a position near a pipette such that the pipette can aspirate from the sample tube. In such examples, a loading bay or rack is disposed on the front side of the analyzer to receive and hold multiple carriers, which may contain, for example, samples and/or reagents to be used in the diagnostic testing. To position samples for testing, the positioner retrieves the carrier from the loading bay and transfers the carrier to a location near an operating range of the sample pipette, which is also adjacent the front of the analyzer. After aspiration, the positioner transports the sample carrier back to the loading bay and reloads the sample carrier in a respective slot. The positioner may then retrieve a second carrier and likewise transfers the second carrier to the location near the sample pipette.
However, the pipetting mechanisms of these known analyzers are only able to aspirate samples from sample tubes that are positioned in a specific location by the positioner. In addition, because only one positioner is utilized, the positioner can only retrieve and hold one carrier at a time and, thus, there are increased time delays between aspirations from different carriers.
Additionally, for some diagnostic testing, some samples may have a higher priority for testing, some samples and/or reagents may need to be refrigerated and/or other samples and/or reagents may involve additional processing steps (e.g., centrifugation, incubation) prior to analysis. Some known laboratories use a laboratory automated system having a track to transport priority samples and other liquids (e.g., reagents, calibration fluids, control fluids, wash fluids, etc.) to the analyzers. In some known configurations, the track is located along a side of the analyzer and transports the priority samples to a location within the operating range of the sample pipetting mechanism. This arrangement increases the footprint of the analyzer particularly in configurations in which multiple analyzers (e.g., modules) are arranged next to each other. Also, the track system being disposed on the sides of the analyzers prevents the alignment (e.g., a side-by-side layout) of multiple modules, and in some examples, it may be desired to add multiple modules (e.g., analyzers) to increase throughput of a laboratory or facility utilizing the analyzers. In other known configurations, the track system is disposed along the front of the analyzers outside of the front loading bay. However, with this arrangement, additional robotic mechanisms and/or spurs are needed to move the carriers from the track system to the loading bay, and then from the loading bay into the analyzer. Additionally, with this arrangement, the track system blocks access to the front loading bay and, thus, an operator or technician is not able to manually load samples and/or reagents for diagnostic testing.
The example analyzers disclosed herein have a sample pipette (e.g., a pipetting mechanism) disposed near a rear side of the analyzer and one or more shuttle carriers to transport sample carriers from a front side of the analyzer to the rear side of the analyzer near the sample pipette. The sample pipette is positioned to aspirate sample liquid from sample tubes in the carriers and to dispense the sample liquid into one or more reaction vessels in the analyzer.
In some examples, the analyzer includes two carrier shuttles that operate independently of each other, which decreases time between aspirations and, thus, increases throughput of the analyzer. Additionally, by locating the sample pipette adjacent the rear side of the analyzer, a laboratory automated system (LAS) track can be disposed (e.g., mounted) at or along the rear side of analyzer without interfering with the layout of the laboratory. For example, multiple modules or analyzers may be aligned side-by-side, and the LAS track may traverse along the rear side of the modules for delivering additional samples (e.g., priority samples) and sample carriers to the individual analyzers. Therefore, the example analyzers may perform diagnostic testing according to traditional protocols or schedules that utilize the front loading bay and may also receive priority samples and other liquids (e.g., calibration/control liquids) from the LAS without interrupting normal operations of the analyzer. Additionally, the modularity of the example analyzers allows more or less analyzers (e.g., one, two, three, four or more) to be utilized depending on the demand (e.g., increased demand for immunoassay testing and/or clinical chemistry testing) of the laboratory or facility. In examples with multiple analyzers, the analyzers may be any combination of immunoassay or clinical chemistry analyzers. For example, there may be a laboratory system with three immunoassay analyzers coupled as modules with a clinical chemistry analyzer. In other examples, there may be two of each and/or other combinations are possible.
An example apparatus disclosed herein includes an analyzer to perform a diagnostic test, the analyzer having a first side and a second side opposite the first side. The example apparatus includes a loading bay disposed on the first side of the analyzer to receive a first carrier and a pipetting mechanism coupled to the analyzer adjacent the second side. The example apparatus also includes a first carrier shuttle to transport the first carrier from a first location adjacent the loading bay to a second location adjacent the pipetting mechanism. In addition, the example apparatus includes a track disposed adjacent the second side of the analyzer to transfer a second carrier to a third location adjacent the pipetting mechanism.
In some examples, the apparatus also includes a second carrier shuttle, wherein the loading bay is to receive a third carrier and the second carrier shuttle is to transport the third carrier from the first location adjacent the loading bay to the second location adjacent the pipetting mechanism. In some such examples, the first carrier shuttle and the second carrier shuttle are independently movable. In some examples, the apparatus also includes a positioner to transport the first carrier from a slot in the loading bay to the first carrier shuttle. In some such examples, the positioner is to transport the third carrier from a slot in the loading bay to the second carrier shuttle.
In some examples, the first carrier shuttle comprises a lead screw. In some examples, the first carrier shuttle comprises a conveyor belt.
In some examples, the first carrier shuttle is to move in a direction substantially perpendicular to the track. In some examples, the track comprises a spur to transport the first carrier to or from the third location.
In some examples, the apparatus also includes a motor to operate the first carrier shuttle, the motor being disposed at one of the first location or the second location. In some such examples, the apparatus also includes a sensor to detect movement in the first carrier shuttle, the sensor disposed at the other of the first location or the second location, opposite the motor.
In some examples, the analyzer comprises a rotatable plate having a plurality of reaction vessels, and the pipetting mechanism is to dispense liquid into one or more of the reaction vessels. In some such examples, the pipetting mechanism is to follow a first protocol of liquid transfer between at least one of the second location or the third location and the reaction vessels. In some examples, the first protocol to be suspended, the first carrier shuttle or a second carrier shuttle is to transport a third carrier from the loading bay to the second location, and the pipetting mechanism is to transfer liquid between the third carrier and at least one of the reaction vessels.
In some examples, the track is coupled to a refrigerated storage area. In some examples, the pipetting mechanism is to at least one of dispense or aspirate a sample from the second location and the third location.
Another example apparatus disclosed herein includes a first carousel, a second carousel, a first track on a first side of the first carousel, a second track on a second side of the first carousel parallel to the first track, a third track on a third side of the first carousel and a pipette to access the first carousel, the first track and the third track.
In some examples, the pipette is to pivot about a single axis to access each of the first carousel, the first track and the third track. In some examples, the third track is perpendicular to the first track. In some examples, the third track comprises a first shuttle to transport a carrier from a first position near the second track to a second position near the pipette. In some examples, the third track comprises a first shuttle and a second shuttle. In some examples, the first shuttle and second shuttle are independently movable. In some examples, the first carousel is to carry a reaction vessel and the second carousel is to carry a reagent container.
An example method is disclosed here that includes transporting a first carrier from a first side of an analyzer having a loading bay to a second side of the analyzer opposite the first side, aspirating a first liquid from the first carrier using a pipetting mechanism disposed adjacent the second side of the analyzer, and dispensing the first liquid, via the pipetting mechanism, into a first reaction vessel on the analyzer. The example method includes transporting a second carrier along a track to a position adjacent the pipetting mechanism, the track disposed along the second side of the analyzer, aspirating a second liquid from the second carrier using the pipetting mechanism, and dispensing the second liquid, via the pipetting mechanism, into a second reaction vessel on the analyzer.
In some examples, the first carrier is transported to the second side of the analyzer via a first carrier shuttle. In some such examples, the method includes transporting a third carrier from the first side of the analyzer to the second side of the analyzer. In some examples, the method includes aspirating a third liquid from the third carrier using the pipetting mechanism and dispensing the third liquid, via the pipetting mechanism, into a third reaction vessel on the analyzer. In some examples, the third carrier is transported to the second side of the analyzer via a second carrier shuttle. In some examples, the first carrier shuttle and the second carrier shuttle operate independently of each other. In some examples, one or more of the first carrier shuttle or the second carrier shuttle is a track comprising a lead screw. In some examples, one or more of the first carrier shuttle or the second carrier shuttle is a track comprising a conveyor belt. In some examples, one or more of the first carrier, the second carrier or the third carrier comprises at least one test sample tube.
Also disclosed herein is an example system that includes multiple analyzers. For example, the example system includes a first analyzer to perform a first diagnostic test and a second analyzer to perform a second diagnostic test. The example first analyzer includes a first proximal side, a first distal side opposite the first proximal side, a first pipetting mechanism adjacent the first distal side and a first loading bay disposed on the first proximal side to receive a first carrier. The example analyzer also includes a first carrier shuttle to transport the first carrier from a first location adjacent the first proximal side to a second location adjacent the first pipetting mechanism. The example second analyzer includes a second proximal side, a second distal side opposite the second proximal side, a second pipetting mechanism adjacent the second distal side and a second loading bay disposed on the second proximal side to receive a second carrier. In addition, the example second analyzer includes a second carrier shuttle to transport the second carrier from a third location adjacent the second proximal side of the second analyzer to a fourth location adjacent the second pipetting mechanism. Also, the example system includes a track disposed along the first distal side and the second distal side. The example track includes a first sidetrack to transfer a third carrier to a fifth location adjacent the first pipetting mechanism.
In some example, the example track includes a second sidetrack to transfer the third carrier to a sixth location adjacent the second pipetting mechanism.
In some examples, the first carrier shuttle and the second carrier shuttle are substantially parallel. In some examples, the first carrier shuttle is substantially perpendicular to the track.
In some examples, the first diagnostic test is an immunoassay and the second diagnostic test is a clinical chemistry assay. Also, in some examples, the first diagnostic test is an immunoassay and the second diagnostic test is an immunoassay. In addition, in some examples, the first diagnostic test is a clinical chemistry assay and the second diagnostic test is a clinical chemistry assay.
In some examples, the example system also includes a positioner disposed along the first proximal side and the second proximal side of the second analyzer. In some examples, the positioner is to transfer the second carrier from the second loading bay to the first carrier shuttle on the first analyzer.
In example system also may include a third analyzer disposed next to one of the first analyzer or the second analyzer. The example third analyzer includes a third proximal side, a third distal side opposite the third proximal side, a third pipetting mechanism adjacent the third distal side and a third loading bay disposed on the third proximal side to receive a fourth carrier. In addition, the example third analyzer includes a third carrier shuttle to transport the fourth carrier from a sixth location adjacent the third proximal side of the third analyzer to a seventh location adjacent the third pipetting mechanism. In some examples, the example track of the example system also is disposed along the third distal side of the third analyzer.
Turning now to the figures, an example automated diagnostic analyzer 100 is shown in
In the example shown, the second carousel 104 is vertically distanced (e.g., spaced) above the first carousel 102 and at least a portion of the second carousel 104 is disposed above and over the first carousel 102. In other examples, the first carousel 102 and the second carousel 104 are disposed next to each other (e.g., coplanar) or may be arranged to be concentric with each other.
In the illustrated example of
The example automated diagnostic analyzers disclosed herein also include one or more pipetting mechanisms (e.g., probe arms, automated pipettes, pipettes, etc.) to aspirate and dispense liquids within the reaction vessels 108a-n on the second carousel 104. In the illustrated example shown in
In the example shown, the pipetting mechanism 110 is disposed outside of the first carousel 102 and outside of the second carousel 104, for example, coupled to the base 106 in a position at a distance from the center of the first carousel 102 and the center of the second carousel 104 that is greater than either a first diameter of the first carousel 102 or a second diameter of the second carousel 104. However, in other examples, the pipetting mechanism 110 is disposed above and over the first carousel 102 and/or adjacent the second carousel 104. In such examples, the pipetting mechanism 110 may be mounted to a platform that is disposed between the first carousel 102 and the second carousel 104. In still other examples, the pipetting mechanism 110 may be disposed over the first carousel 102 and over the second carousel 104.
In the example shown in
In
In the example shown, the RSH 118 includes a positioner 126, which may be a robotic device, to transport the carriers 124a-n and containers coupled thereto to and from the loading rack 120. The positioner 126 is movable along a positioner track 128 disposed along the length of the loading rack 120 and the first side 114 of the analyzer 100. The positioner 126 has an arm 130 to engage the carriers 124a-n loaded in the RSH 118. The positioner 126 and the arm 130 operate to remove the carriers 124a-n from their respective slots 122a-n and transport the carriers 124a-n to different locations along the positioner track 128.
In the example shown in
In the example shown, the positioner 126 transports the carriers 124a-n to and from the first carrier shuttle 134 and/or the second carrier shuttle 136. For example, in
In some examples, the positioner 126 includes a label reader such as, for example, a barcode reader, a radio frequency identification (RFID) reader and/or other type of reader, to read carrier and container information. The label reader reads the labels attached to the carriers, the sample tubes and/or reagent tubes as the positioner 126 passes the carriers by the reader. An example RSH and an example positioner are disclosed in U.S. patent application Ser. No. 12/106,755, titled “ASSAY TESTING DIAGNOSTIC ANALYZER,” filed on Apr. 21, 2008, which is incorporated herein by reference in its entirety.
In the illustrated example, the first and second carrier shuttles 134, 136 operate to move carriers (e.g., the carriers 124a-n) and/or containers between a first position near the first side 114 of the analyzer 100 (e.g., adjacent the rack 120 or the RSH 118) and a second position near the second side 116 of the analyzer 100 (e.g., near the pipetting mechanism 110). Specifically, the first and second carrier shuttles 134, 136 operate to transport carriers 124a-n to a position within the path of travel 112 of the pipetting mechanism 110, such that liquid (e.g., a sample, a specimen) within the containers on the carriers 124a-n can be aspirated from the containers via the pipetting mechanism 110. The pipetting mechanism 110 may then dispense the liquid at point A into one or more of the reaction vessels 108a-n on the second carousel 104 for testing.
In the example shown, the first carrier shuttle 134 includes a first track 142 and the second carrier shuttle 136 includes a second track 144. In some examples, the first track 142 and the second track 144 are conveyor belts that move to transport carriers placed on the respective tracks 142, 144 from one position to another position along the first and second tracks 142, 144. In other examples, the first and second tracks 142, 144 include other track devices such as, for example, a belt, a chain, a carriage, a lead screw, an air cylinder, and/or a linear motor or combinations thereof. In some examples, the first carrier shuttle 134 and the second carrier shuttle 136 comprise different types of tracks. In the example shown, the first carrier shuttle 134 includes a first motor 146 (e.g., an electric motor, a servo motor, a stepper motor, etc.) to drive the first track 142 and the second carrier shuttle 136 includes a second motor 148 to drive the second track 144. In this example, the first and second tracks 142, 144 are operated independently of each other. In other examples, the operations of the first and second tracks 142, 144 are coordinated. The first and second motors 146, 148 may be used to rotate one or more pulleys or gears, which, in turn, move the tracks 142, 144. In the example shown, the first and second motors 146, 148 are rotatable in either direction to move the first and second tracks 142, 144, respectively, in either direction.
In the example shown, the first and second motors 146, 148 are located closer to the second side 116 of the analyzer 100. In the example shown, the first and second carrier shuttles 134, 136 also include respective sensors 150, 152 such as, for example, a linear encoder and/or a transducer. The first and second sensors 150, 152 are located adjacent the first and second tracks 142, 144 to sense a position/movement of the respective tracks 142, 144. Thus, the first and second sensors 150, 152 provide feedback to the first and second motors 146, 148 to indicate whether the first and second tracks 142, 144 are actually moving when the first and second motors 146, 148 are operating. In the example shown, the first and second sensors 150, 152 are positioned on the first and second carrier shuttles 134, 136 opposite the first and second motors 146, 148 as a safety feature to ensure that the tracks 142, 144 are moving when the motors 146, 148 are operating. In some instances, the first and/or second tracks 142, 144 may become dislodged, misaligned or otherwise inoperative and, thus, will not properly transport the carriers. In such an instances, the first and second motors 146, 148 may continue to operate (e.g., spin, rotate, etc.) according to a programmed testing protocol. If the sensors 150, 152 were located adjacent the first and second motors 146, 148, the continued operation of the motors 146, 148 could interfere with the readings of the sensors 146, 148, and cause the sensors 150, 152 to erroneously indicate that the tracks 142, 144 were operating normally. By locating the sensors 150, 152 at the opposite end of the carrier shuttles 134, 136 than the motors 146, 148, the sensors 150, 152 can ensure the tracks 134, 136 are actually moving in accordance with the programming of the first and second motors 146, 148. In some examples, the motors 146, 148 are disposed at, near or closer to the second side 116 of the analyzer 100, and the sensors 150, 152 are at, near or closer to the first side 114 of the analyzer 100. In other examples, this configuration may be switched, such that the motors 146, 148 are disposed at, near or closer to the first side 114 of the analyzer 100, and the sensors 150, 152 are disposed at, near or closer to the second side 116 of the analyzer 100.
The use of multiple shuttle carriers 134, 136 enables the example analyzer 100 to perform sampling (e.g., aspirating and/or dispensing) from one carrier on one track while another carrier is being loaded onto the other track. For example, a first carrier 124a can be retrieved from the RSH 118 by the positioner 126 (
After the first carrier 124a is placed on the first track 142 of the first carrier shuttle 134, the first motor 146 operates to move the first carrier 124a, via the first track 142, from a first position near the first side 114 of the analyzer 100 to a second position near the second side 116 of the analyzer 100 and, thus, within the path of travel 112 of the pipetting mechanism 110. The pipetting mechanism 110 may aspirate from a container on the first track 142 along the first path of travel 112 at point B. The first motor 146 operates to position the first carrier 124a so that the first path of travel 112 intersects the appropriate container on the first carrier. After aspirating from a container, the pipetting mechanism 110 moves along its first path of travel 112 to dispense the liquid into one or more of the reaction vessels 108a-n on the second carousel 104 at point A.
While the pipetting mechanism 110 is aspirating from a container on the first carrier 124a, the positioner 126 can retrieve a second carrier 124b-n from the RSH 118 and load the second carrier 124b-n onto the second track 144 of the second carrier shuttle 136. The second motor 148 operates to move the second carrier 124b-n on the second track 144 from the first position near the first side 114 of the analyzer 100 to the second side 116 of the analyzer 100 near the pipetting mechanism 110. The second motor 148 operates to position the second carrier 124b-n along the first path of travel 112 of the pipetting mechanism 110 (e.g., the position shown in
When a carrier, e.g., the first carrier 124a, returns to the first position adjacent the first side 114 of the analyzer 100, the positioner 126 unloads the first carrier 124a and places the first carrier 124a within one of the slots 122a-n in the loading rack 120. The positioner 126 is then able to retrieve the first carrier 124a or another carrier 124b-n from the loading rack 120 and deposit that carrier 124a-n on the first track 144 of the first carrier shuttle 134. By employing two carrier shuttles 134, 136, one of the carrier shuttles 134, 136 can operate to hold a carrier near the second position for aspiration while another carrier can be loaded onto the other carrier shuttle 134, 136 for subsequent transportation to the second side 116 of the analyzer 100. Thus, the time between aspirations is reduced, which increases throughput of the example analyzer 100.
In the example shown, the first and second carrier shuttles 134, 136 are aligned substantially parallel to one another and are disposed along the third side 138 of the analyzer 100. However, in other examples, the first and second carrier shuttles 136, 136 may be positioned other locations and/or not parallel to one another. In the example shown, the first and second carrier shuttles 134, 136 are disposed over a portion of the first carousel 102. In other examples, the first and/or second carrier shuttles 134, 136 are disposed outside of the first carousel 102 (i.e., next to the first carousel 102).
In some examples, test orders are programmed by an operator or downloaded via a lab information system or any network. A test order may require a plurality of assays. Once a sample is loaded, a programmable computer determines the order (e.g., scheduling, protocols) of the different sample tests based on factors including, for example, number of tests to be conducted, types of reagents to be used, number of reagents to be used, an incubation period, scheduled priority and other factors. In the example shown, the positioner 126, the first track 142, the second track 144, the first motor 146, the second motor 148 and other components are controlled in response to commands from the programmable computer.
In the illustrated example shown in
In the example shown, the LAS 154 transports carriers (e.g., sample carriers) or containers to a position near the analyzer 100 and, more specifically, to a position within the first path of travel 112 of the pipetting mechanism 110. For illustrative purposes, a carrier 124c is depicted on the first subtrack or spur 158. In operation, the carrier 124c is transported along the main track 156 of the LAS 154 and when the carrier 124c arrives at the first spur 158, the carrier 124c may continue down the main track 156 or may be diverted to the first spur 158 to be sent to the position adjacent the pipetting mechanism 110. As shown, the path of travel 112 of the pipetting mechanism 110 extends beyond the second side 116 of the analyzer 110. In the example shown, the pipetting mechanism 110 may aspirate a liquid (e.g., a sample) from a container on the carrier at the first spur 158 at point D. In the example shown, the main track 156 and the spur 158 of the LAS 154 are substantially parallel to the second side 116 of the analyzer 100 and are substantially perpendicular to the first and second carrier shuttles 134, 136.
In the example shown, the pipetting mechanism 110 is located near the second side 116 of the analyzer 100 and has access (e.g., can aspirate from and/or can dispense to) to the reaction vessels 108a-n on the second carousel 104 at point A, a carrier on the first track 142 of the first carrier shuttle 134 at point B, a carrier the second track 144 of the second carrier shuttle 136 at point C and/or a carrier on the spur 158 of the LAS 154 at point D. Therefore, the pipetting mechanism 110 has access to carriers loaded in the RSH 118 at the first side 114 (e.g., the front side) of the analyzer 110 (via one or more of the carrier shuttles 134, 136) and carriers transported along the track 156 of the LAS 154 on the second side 116 (e.g., the back side) of the analyzer 100. Continuous access to carriers at different locations around the pipetting mechanism 110 points allows the pipetting mechanism 110 to aspirate from multiple sample containers more efficiently and with less idle or down time and, as a result, increases the throughput of the example analyzer 100.
In the example shown, the first analyzer 202 further includes a first carrier shuttle 222 and a second carrier shuttle 224 located along a third side 226 (e.g., the left side) of the first analyzer 202, opposite a fourth side 228 (e.g., the right side) of the first analyzer 202. In the example shown, each of the first and second carrier shuttles 222, 224 has a respective track 230, 232 (e.g., lead screw) and a respective carriage 234, 236 (e.g., shuttles). The first and second tracks 230, 232 operate to move the respective carriages 234, 236 from a first position near the first side 214 of the first analyzer 202 to a second position near the second side 216 of the first analyzer 202 and within the first path of travel 220 of the first pipetting mechanism 218. In the example shown, the first and second carriages 234, 236 are platforms for holding a carrier. As the first and second tracks 230, 232 operate (e.g., rotate), the first and second carriages 234, 236 move along the longitudinal axes of the respective track 230, 232.
In the example shown, the second analyzer 204 includes similar components as the first analyzer 202 such as, for example, a third carousel 238 (e.g., a reagent carousel), a fourth carousel 240 (e.g., a reaction carousel), a second RSH 242, a first side 244 (e.g., a front side) opposite a second side 246 (e.g., a rear side), a third side 248 (e.g., a left side) opposite a fourth side 250 (e.g., a right side), a second pipetting mechanism 252 with a second path of travel 254, a third carrier shuttle 256, a fourth carrier shuttle 258, a third track 260 (e.g., a third lead screw), a fourth track 262 (e.g., a fourth lead screw), a third carriage 264 and a fourth carriage 266. The third and fourth carrier shuttles 256, 258 of the second analyzer 204 operate to transport carriers from a first position adjacent the first side 244 of the second analyzer 204 to a second position adjacent the second side 246 of the second analyzer 204 and within the second path of travel 254 of the second analyzer 204.
In the example shown, a positioner 268 is movable along a positioner path 270 between the first and second RSH 212, 242 and along the first sides 214, 244 of the first and second analyzers 202, 204. In this example, only one positioner 268 is utilized to transport carriers among the first RSH 212, the second RSH 242, the first track 230, the second track 232, the third track 260 and/or the fourth track 262. In some examples, the positioner 268 is substantially similar to the positioner 126 disclosed above in connection with
In the example shown, a first plurality of carriers 272a-n are loaded in the first RSH 212, and a second plurality of carriers 274a-n are loaded in the second RSH 242. In operation, the positioner 268 is to retrieve one of the first or second plurality of carriers 272a-n, 274a-n and is to place (e.g., position, deposit, transport) the carrier on one of the first, second, third or fourth carrier shuttles 222, 224, 256, 258. The carriers 272a-n, 274a-n may then be transported via one of the carriages 234, 236, 264, 266 and tracks 230, 232, 260, 262 to a position near the second side 216, 246 of one of the analyzers 202, 204.
In the example shown, the first pipetting mechanism 218 of the first analyzer 202 may aspirate from a container in a first carrier on the first carriage 234 at point A and may aspirate from another container in a second carrier on the second carriage 236 at point B, which are both along the first path of travel 220. Similarly, the second pipetting mechanism 252 may aspirate from a container in a third carrier on the third carriage 264 at point C and may aspirate from another container in a fourth carrier on the fourth carriage 266 at point D, both of which are along the second path of travel 254 of the second pipetting mechanism 252. The first pipetting mechanism 218 may access one or more reaction vessels on the second carousel 210 at point E, and the second pipetting mechanism 252 may access one or more reaction vessels on the fourth carousel 240 at point F.
In the example system shown in
Although only two analyzers 202, 204 are shown in this example, more (e.g, three or four) or fewer analyzers may be added to the laboratory system 200, and the track 276 of the LAS 206 may be configured to traverse along or near the analyzers to supply the analyzers with access to additional carriers. The LAS 206 transports carriers having additional liquids such as, for example, priority samples for testing, calibration and control liquids, additional reagents (including, for example, liquids with microparticles), etc. In some examples, the LAS 206 is tied to additional equipment such as, for example, a refrigerated storage area 282, a centrifuge 284 and/or an aliquoter 286.
In some example tests, such as clinical chemistry tests, a body liquid may be analyzed, such as, for example, serum or plasma. Serum is the yellow, watery part of blood that is left after blood has been allowed to clot and all blood cells have been removed such as, for example, via centrifugation, which packs the denser blood cells and platelets to the bottom of a centrifuge tube and leaves the liquid serum fraction resting above the packed cells. Plasma is similar to serum but is obtained by centrifuging blood without clotting. The LAS 206 of example system 200 enables sample liquids such as, for example, serum or plasma to be processed in the centrifuge 284 and then transported to one or more of the first and second analyzers 202, 204 for diagnostic testing. In other examples, the LAS 206 allows priority samples to be loaded onto carriers and sent along the track 276 to a position within the first and/or second paths of travel 220, 254 of the respective pipetting mechanisms 218, 252. By disposing the pipetting mechanisms 218, 252 near the second sides 216, 246 of the analyzers 202, 204, and by providing the carrier shuttles 222, 224, 256, 258 to transport carrier to and from the first and second sides 214, 244, 216, 246 of the analyzers 202, 204, the analyzers 202, 204 may receive samples in a traditional operating manner through the first sides 214, 244 and/or may receive samples from the LAS 206 at the second sides 216, 246. Additionally, by disposing the pipetting mechanisms 218, 252 near the second sides 216, 246 of the analyzers, the analyzers 202, 204 can be arranged in a side-by-side configuration without interfering with operations of the respective analyzers 202, 204 and, thus, laboratory floor space is decreased.
The example processing system 300 includes a pipette controller 304. In some examples, an analyzer utilizes one or more pipettes (e.g., automated pipetting mechanisms, probe arms, etc.) to aspirate a fluid from one location and dispense the fluid into another location. In some examples, an analyzer has multiple pipettes such as, for example, a first pipette for dispensing a sample into a reaction vessel, a second pipette for dispensing a first reagent into a reaction vessel, a third pipette for dispensing a second reagent into a reaction vessel, etc. The pipette controller 306 operates to control the pipettes such as, for example, the movement of the pipettes, the vacuum applied to the pipettes for aspirating, the pressure applied to the pipettes for dispensing, etc. In the example analyzer 100 disclosed above, the analyzer 100 includes the pipetting mechanism 110, which moves a pipette along the path of travel 112 to aspirate and dispense fluid such as, for example, sample. In some examples, the example pipetting mechanism 110 dispenses sample into the reaction vessels 108a-n on the second carousel 104 at point A. The pipette controller 304 is used to control the pipetting mechanism 110.
The example processing system 300 includes a reader controller 306. In some examples, a reader (e.g., an analyzer) is disposed along the inside or the outside of the reaction carousel, such that as the reaction carousel rotates, the reader may analyze the contents of the respective reaction vessels. In some examples, a reaction vessel is held stationary in front of the reader for a predetermined time and a reading is taken. In other examples, one or more reaction vessels may be passed continuously in front of the reader, and the reader takes a plurality of individual readings corresponding to each reaction vessel. The reader controller 306 operates to control when the readings are taken.
The reader controller 306 may also be used to control other readers. For example, a reader positioned near the RSH 118 may be operated to read an RFID tag, a bar code, a QR code or other machine readable code to gather information about the identity of or other data related to the contents of a carrier 124a-n and/or a container coupled to the carrier 124a-n.
The example processing system 300 also includes a positioner controller 308 and a shuttle controller 310. In some examples, an analyzer includes a loading bay for receiving containers, carriers having containers and/or trays of carriers. The containers may include reagents, samples, controls, calibrations, etc. In some examples, the loading bay is disposed on a first side or front side of the analyzer. In some examples, a positioner (e.g., a robotic mechanism) retrieves the carriers from the loading bay and transports the carriers to different areas of the analyzer for testing and retesting. The positioner controller 308 controls the movement of the positioner to engage and move carriers in the analyzer. In the example analyzer 100 disclosed above, the positioner 126 translates along the track 128 on the first side 114 of the analyzer 100. The positioner 126 also has the arm 130 that rotates to engage carriers in the RSH 118. The positioner controller 308 may be used, for example, to control the movement of the positioner 126 and the arm 130 along the track 128.
In some examples, an analyzer includes one or more shuttle carriers to transport carriers from one side of the analyzer to the other side of the analyzer. In some examples, the pipette is disposed along a second side or rear side of the analyzer and the carrier shuttle(s) transports the carriers from the front of the analyzer adjacent the loading bay to a position near the back side of the analyzer and within the range of the pipette. In some examples, the carrier shuttles are operated by motors (e.g., electric motors, servo motors, stepper motors, etc.). In some examples, the shuttle carriers utilize a track system such as, for example, a conveyor belt or a lead screw, to transport the carriers. The carrier shuttle controller 310 operates to control the movement of the one or more carrier shuttles to transport carriers along the carrier shuttle(s). The carrier shuttle controller 310 may be used, for example, to control the motors 146, 148 of the respective carrier shuttles 134, 136.
The example processing system 300 includes sensors 312 communicatively coupled to the shuttle carrier controller 310. In some examples, one or more sensors (e.g., transducers, encoders, etc.) are used to sense movement of the carrier shuttles to determine whether the carrier shuttles are operating in accordance with their instructions from the carrier shuttle controller 310. In some examples, the sensors 312 are disposed at an opposite end of the carrier shuttles than the motors. In the example analyzer 100 disclosed above, the sensors 150, 152 are disposed along the tracks 142, 146 of the respective carrier shuttles 134, 136 to determine whether the tracks 142, 146 of the respective shuttle carriers 134, 136 are operating effectively and that the tracks 142, 146 are not dislodged, misaligned or otherwise inoperable.
The example processing system 300 includes a laboratory automation system (LAS) controller 314. In some examples, a laboratory automation system includes a system of tracks and instruments to transport carriers around a laboratory. Some samples, reagents, and other liquids used in diagnostic testing, require additional processing steps and/or refrigeration. The LAS may connect to various instruments and, when time for processing, the LAS may transport the liquid (e.g., a priority sample), via a carrier, to the back side of the analyzer for aspirating by the pipette. In some examples, the main track of the LAS includes a subtrack or spur to transport a carrier to the rear side of the analyzer, such that the carrier is not held stationary on the main track. The LAS controller 314 controls operation of the LAS including, for example, the main track, the spurs, and/or any equipment or instruments attached thereto. For example, the example LAS 154 disclosed above includes the main track 156 and the spur 158 to transport a carrier (e.g., 124c) to a location adjacent the rear side of the analyzer 100, such that the pipetting mechanism 110 may aspirate from the contents of the carrier.
The example processing system 300 also includes a processor 316 and a database 318. The processor interfaces with the controllers and sensors 302-314 of the processing system 300 to control the various operations of each of the components. The processor 316 is programmable to operate in accordance with desired testing protocol(s). The database 318 may be used to store, for example, information regarding tests that have occurred, are to occur, and/or are occurring, testing protocol(s), information regarding the individual samples and/or reagents data gathered from the reader(s), position(s) of the carrier(s), postioner(s), carrier shuttle(s), pipetting mechanism(s), LAS, and/or carousel(s), and/or other information.
In the example shown, the processing system components 302-318 are communicatively coupled to other components of the example system 300 via communication links 320. The communication links 320 may be any type of wired connection (e.g., a databus, a USB connection, etc.) or a wireless communication mechanism (e.g., radio frequency, infrared, etc.) using any past, present or future communication protocol (e.g., Bluetooth, USB 2.0, USB 3.0, etc.). Also, the components of the example system 300 may be integrated in one device or distributed over two or more devices.
While an example manner of implementing the analyzers 100, 202, 204 and/or the LAS 154, 206 of
A flowchart representative of an example method 400, at least some of which are machine readable, for implementing the example analyzers 100, 202, 204, the example LAS 154, 206 and/or the example processing system 300 is shown in
As mentioned above, at least some of the elements of the process of
The example process 400 also includes transporting a first carrier to a first carrier shuttle (block 404). For example, the example analyzer 100 disclosed above includes a first carrier shuttle 134 and a second carrier shuttle 136 to transport carriers from the first side 114 of the analyzer 100 to the second side 116 of the analyzer 100. In some examples, a positioner is located along the loading bay to retrieve carriers from respective slots and transfer the carriers to other locations in the analyzer including, for example, to a carrier shuttle.
The example process 400 includes transporting the first carrier from the first side of the analyzer to the second side of the analyzer (block 406). In some examples, the first carrier shuttle includes a conveyor belt and a motor to transport the first carrier. In other examples, the first carrier shuttle comprises a lead screw and a carriage, such that the first carrier may be placed in the carriage and the first lead screw operates (e.g., rotates) to move the carriage (and the first carrier) from the first side of the analyzer to the second side of the analyzer. In some examples, the first carrier shuttle has a sensor (e.g., an encoder, a transducer) to sense movement of the conveyor belt, as a safety feature.
The example process 400 also includes aspirating a liquid from the first carrier (block 408). For example, the example analyzer 100 disclosed above locates the pipetting mechanism 110 adjacent the second side 116 of the analyzer 100. The first carrier shuttle 134 is to transport the first carrier from a first location near the first side 114 of the analyzer 100 to a second location near the second side 116 of the analyzer and, more specifically, within an access range (e.g., the path of travel 112, a horizontal arc path, etc.) of the pipetting mechanism 110, to enable the pipetting mechanism 110 to aspirate from the first carrier. After aspiration, the liquid is dispensed into a first reaction vessel (block 410). In some examples, the pipetting mechanism 110 has an axis of rotation and a probe arm with a pipette disposed on the distal end of the probe arm. The probe arm rotates to access liquids along a path of travel (e.g., a horizontal arc path) and dispenses the aspirated liquid into the first reaction vessel on the reaction carousel 104.
The example process includes determining whether there is a second carrier shuttle (412). In some examples, the analyzer employs only one carrier shuttle. In the example analyzers 100, 202, 204 disclosed above, a second carrier shuttle is utilized to reduce turnaround time and increase throughput. The second carrier shuttle is independently operated. Therefore, one or more of the operations of the second carrier shuttle and/or components related thereto (e.g., blocks 314, 316, 318, 320) may occur independently and/or simultaneously relative to the one or more of the operation of the first carrier shuttle and/or components related thereto (e.g., blocks 304, 306, 308, 310).
The example process 400 includes transporting a second carrier to the second carrier shuttle (block 414). For example, as mentioned above, the positioner 126 of the analyzer 100 retrieves the second carrier 124b-n from a slot 122b-n in the loading bay 120 and transports the second carrier 124b-n to the second carrier shuttle 136.
The example process 400 also includes transporting the second carrier from the first side of the analyzer to the second side of the analyzer (block 416). In some examples, the second carrier shuttle includes a conveyor belt or a lead screw. The second carrier shuttle operates to transport the second carrier from the first location near the first side of the analyzer to the second location adjacent the second side of the analyzer and, more specifically, to a location within the path of travel of the pipetting mechanism.
The example process 400 includes aspirating a liquid from the second carrier (block 418) and dispensing the liquid into a second reaction vessel on the reaction carousel (420).
In addition, the example process 400 includes transporting a third carrier to the second side of the analyzer (block 422). For example, the example analyzer 100 may include the laboratory automation system (LAS) 154. The LAS 154 has a track system 156 to transport carriers and/or containers of diagnostic testing liquid around a laboratory, and a portion of the track (e.g., 158) is disposed adjacent the second side of the analyzer. The transport of the third carrier is independent of the transport of the first and/or second carriers. Therefore, one or more of the operations of the first and second carrier shuttle and/or components related thereto (e.g., blocks 304, 308, 310, 312, 314, 316, 318, 320) may occur independently and/or simultaneously relative to the one or more of the operation of the LAS 154 and/or components related thereto (e.g., blocks 322, 324, 326).
The example process 400 also includes aspirating a liquid from the third carrier (block 424). For example, the LAS 154 includes the spur 158 that directs the third carrier 124c from the main track 156 to a position within the path of travel 112 of the pipetting mechanism 110 to enable access for aspirating the liquid from the third carrier 124c. The example process 300 also includes dispensing the liquid into a third reaction vessel on the reaction carousel (block 426). For example, the pipetting mechanism 110 may move in the path of travel 112 and dispense aspirated liquid into a reaction vessel on the second carousel 104.
The example process includes determining whether additional tests are to be performed (block 428). If further testing is desired, then the example process includes transporting the first carrier, via the first shuttle carrier, from the second location to the first location adjacent the first side of the analyzer (block 430). In some examples, the positioner removes the first carrier from the first carrier shuttle and places the first carrier in an empty slot in the loading bay. The example process may then continue with loading or transporting another carrier (block 404) onto the first carrier shuttle (i.e., as the “first” carrier in the illustrated example process 400), and the example process 400 proceeds as disclosed above. If further testing is not desired and/or needed (bock 428), then the example process 400 ends (block 432).
The processor platform 500 of the illustrated example includes a processor 512. The processor 512 of the illustrated example is hardware. For example, the processor 512 can be implemented by one or more integrated circuits, logic circuits, microprocessors or controllers from any desired family or manufacturer.
The processor 512 of the illustrated example includes a local memory 513 (e.g., a cache). The processor 512 of the illustrated example is in communication with a main memory including a volatile memory 514 and a non-volatile memory 516 via a bus 518. The volatile memory 514 may be implemented by Synchronous Dynamic Random Access Memory (SDRAM), Dynamic Random Access Memory (DRAM), RAMBUS Dynamic Random Access Memory (RDRAM) and/or any other type of random access memory device. The non-volatile memory 516 may be implemented by flash memory and/or any other desired type of memory device. Access to the main memory 514, 516 is controlled by a memory controller.
The processor platform 500 of the illustrated example also includes an interface circuit 520. The interface circuit 520 may be implemented by any type of interface standard, such as an Ethernet interface, a universal serial bus (USB), and/or a PCI express interface.
In the illustrated example, one or more input devices 522 are connected to the interface circuit 520. The input device(s) 522 permit(s) a user to enter data and commands into the processor 512. The input device(s) can be implemented by, for example, an audio sensor, a microphone, a camera (still or video), a keyboard, a button, a mouse, a touchscreen, a track-pad, a trackball, isopoint and/or a voice recognition system.
One or more output devices 524 are also connected to the interface circuit 520 of the illustrated example. The output devices 524 can be implemented, for example, by display devices (e.g., a light emitting diode (LED), an organic light emitting diode (OLED), a liquid crystal display, a cathode ray tube display (CRT), a touchscreen, a tactile output device and/or a light emitting diode (LED). The interface circuit 520 of the illustrated example, thus, typically includes a graphics driver card, a graphics driver chip or a graphics driver processor.
The interface circuit 520 of the illustrated example also includes a communication device such as a transmitter, a receiver, a transceiver, a modem and/or network interface card to facilitate exchange of data with external machines (e.g., computing devices of any kind) via a network 526 (e.g., an Ethernet connection, a digital subscriber line (DSL), a telephone line, coaxial cable, a cellular telephone system, etc.).
The processor platform 500 of the illustrated example also includes one or more mass storage devices 528 for storing software and/or data. Examples of such mass storage devices 528 include floppy disk drives, hard drive disks, compact disk drives, Blu-ray disk drives, RAID systems, and digital versatile disk (DVD) drives.
Coded instructions 532 to implement the method of
This application claims the benefit under 35 U.S.C. §119(e) to U.S. Provisional Application 61/794,311 titled “AUTOMATED DIAGNOSTIC ANALYZERS HAVING REAR ACCESSIBLE TRACK SYSTEMS AND RELATED METHODS,” filed Mar. 15, 2013, which is incorporated herein by this reference in its entirety.
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