WO2013125536A1 - 自動分析装置 - Google Patents
自動分析装置 Download PDFInfo
- Publication number
- WO2013125536A1 WO2013125536A1 PCT/JP2013/054033 JP2013054033W WO2013125536A1 WO 2013125536 A1 WO2013125536 A1 WO 2013125536A1 JP 2013054033 W JP2013054033 W JP 2013054033W WO 2013125536 A1 WO2013125536 A1 WO 2013125536A1
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- WIPO (PCT)
- Prior art keywords
- liquid
- container
- flow path
- cleaning
- suction nozzle
- Prior art date
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/00584—Control arrangements for automatic analysers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/08—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a stream of discrete samples flowing along a tube system, e.g. flow injection analysis
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1004—Cleaning sample transfer devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/02—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations
- G01N35/04—Details of the conveyor system
- G01N2035/0401—Sample carriers, cuvettes or reaction vessels
- G01N2035/0412—Block or rack elements with a single row of samples
- G01N2035/0413—Block or rack elements with a single row of samples moving in one dimension
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/02—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations
- G01N35/04—Details of the conveyor system
- G01N2035/0439—Rotary sample carriers, i.e. carousels
- G01N2035/0443—Rotary sample carriers, i.e. carousels for reagents
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N2035/1027—General features of the devices
- G01N2035/1048—General features of the devices using the transfer device for another function
- G01N2035/1062—General features of the devices using the transfer device for another function for testing the liquid while it is in the transfer device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/02—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations
- G01N35/025—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations having a carousel or turntable for reaction cells or cuvettes
Definitions
- the present invention relates to an automatic analyzer for detecting a specific biological component or chemical substance contained in a sample.
- the suction nozzle and the syringe are connected by a flow path, the syringe is operated to suck the liquid into the suction nozzle, and the flow path (hereinafter referred to as the suction nozzle and the syringe) is connected.
- a flow cell type detector is provided in the middle of the detection flow path (see Patent Document 1). In this type, a reaction liquid obtained by reacting a sample and a reagent is sucked into a flow cell through a suction nozzle, and a specific biological component or chemical substance contained in the sucked reaction liquid is detected by a detector.
- the residual liquid in the liquid container When replacing the liquid in the liquid container, when discharging the old liquid remaining in the liquid container, the residual liquid in the liquid container may be sucked with a suction nozzle, and the sucked residual liquid may be discharged to the waste channel and discharged. is there.
- a suction nozzle When replacing the liquid in the liquid container, when discharging the old liquid remaining in the liquid container, the residual liquid in the liquid container may be sucked with a suction nozzle, and the sucked residual liquid may be discharged to the waste channel and discharged. is there.
- the amount of suction per time is limited to be less than the capacity of the flow path from the suction nozzle to the flow cell so that residual liquid does not enter the flow cell. I had to repeat it.
- the present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an automatic analyzer capable of speeding up processing by speeding up replacement of liquid in a liquid container, reducing analysis preparation time.
- the suction nozzle and the liquid feeding syringe are connected. Residual liquid is sucked into the flow path via the suction nozzle, and the sucked residual liquid is discharged to the waste section.
- the replacement of the liquid in the liquid container can be speeded up, the analysis preparation time can be shortened, and the processing speed can be increased.
- FIG. 3 is an enlarged view of a part III in FIG. 2 and a longitudinal sectional view of a liquid channel. It is a perspective view of the container holding member with which the automatic analyzer concerning a 1st embodiment of the present invention was equipped.
- FIG. It is a figure showing the structure of the container holding member with which the automatic analyzer which concerns on the 1st Embodiment of this invention was equipped, Comprising: The partially broken side surface of the container holding member which represents the reaction auxiliary liquid container and its peripheral part in a cross section.
- FIG. It is a flowchart showing the control procedure of the control apparatus regarding the detection operation of the specific component contained in a reaction liquid. It is a flowchart showing the control procedure by the control apparatus at the time of replacing the liquid in a liquid container and a liquid flow path. It is a figure showing a mode that the liquid in a reaction auxiliary liquid container is sucked. It is a figure showing a mode that the suck
- FIG. 1 is a plan view showing the overall configuration of an example of an automatic analyzer to which the present invention is applied.
- the analysis apparatus 100 includes a rack transport line 117 for transporting the rack 101, an incubator disk 104 for installing the reaction container 105, a sample dispensing tip / reaction container transport mechanism 106 for transporting the sample dispensing chip and the reaction container 105, and sample dispensing.
- Tests to detect specific biological components and chemical substances It has unit 116, and a control unit 119 for controlling the operation of these devices.
- the rack transport line 117 transports the rack 101 to the sample dispensing position by the sample dispensing nozzle 103 on the line.
- a plurality of sample containers 102 for holding samples (samples) can be installed on the rack 101.
- the configuration in which the sample is conveyed in a line is illustrated as described above, but a disk-shaped object that rotates and conveys the sample may be provided.
- the incubator disk 104 can have a plurality of reaction vessels 105 installed in a ring shape, and is rotated by a driving device (not shown) to move any reaction vessel 105 to a predetermined position such as a dispensing position by the sample dispensing nozzle 103. Can be made.
- the sample dispensing tip / reaction vessel transport mechanism 106 is movable in the three axial directions of XYZ, and each of the predetermined portions of the sample dispensing tip / reaction vessel holding member 107, the reaction vessel stirring mechanism 108 and the incubator disk 104, and the sample The sample dispensing tip / reaction vessel is transported between the dispensing tip / reaction vessel disposal hole 109 and the sample dispensing tip mounting position 110.
- the sample dispensing tip / reaction vessel holding member 107 includes a plurality of unused reaction vessels 105 and sample dispensing tips.
- the sample dispensing tip / reaction vessel transport mechanism 106 moves above the sample dispensing tip / reaction vessel holding member 107, descends, grasps an unused reaction vessel 105, and moves upward.
- the reaction vessel 105 is placed on the incubator disk 104 by moving upward above the position and descending. Further, the sample dispensing tip / reaction vessel transport mechanism 106 moves above the sample dispensing tip / reaction vessel holding member 107, descends, holds the unused sample dispensing tip, and moves up. It moves above the tip mounting position 110 and descends to place the sample dispensing tip at the sample dispensing tip mounting position 110.
- the sample dispensing nozzle 103 can be rotated and moved up and down.
- the sample dispensing nozzle 103 pivots and moves downward above the sample dispensing tip mounting position 110 and press-fits the sample dispensing tip into the tip of the sample dispensing nozzle 103. And put on.
- the sample dispensing nozzle 103 equipped with the sample dispensing tip moves down above the sample container 102 placed on the rack 101 and sucks a predetermined amount of the sample held in the sample container 102.
- the sample dispensing nozzle 103 that has sucked the sample moves above the incubator disk 104 and descends, and discharges the sample into an unused reaction container 105 held by the incubator disk 104.
- the sample dispensing nozzle 103 moves above the sample dispensing tip / reaction container disposal hole 109 and discards the used sample dispensing chip from the sample dispensing chip / reaction container disposal hole 109. .
- a plurality of reagent containers 118 are installed on the reagent disk 111.
- a reagent disk cover 112 (FIG. 1 is a partially broken view of the left portion) is provided on the upper part of the reagent disk 111, and the inside of the reagent disk 111 is kept at a predetermined temperature.
- the reagent disk cover 112 is provided with an opening 113 at a portion on the incubator disk 104 side.
- the reagent dispensing nozzle 114 can rotate and move up and down like the sample dispensing nozzle 103, rotates and moves down above the opening 113 of the reagent disk cover 112, and moves the tip of the reagent dispensing nozzle 114 to a predetermined position. A predetermined amount of reagent is aspirated by inserting into the reagent container 118. Next, the reagent dispensing nozzle 114 rises and rotates above a predetermined position of the incubator disk 104 to discharge the reagent into the reaction container 105 containing the sample to be mixed.
- the reaction container 105 from which the sample and the reagent have been discharged moves to a predetermined position by the rotation of the incubator disk 104 and is transported to the reaction container stirring mechanism 108 by the sample dispensing tip / reaction container transport mechanism 106.
- the reaction vessel stirring mechanism 108 agitates and mixes the sample and the reagent in the reaction vessel 105 by applying a rotational motion to the reaction vessel 105.
- the reaction container 105 is returned to a predetermined position of the incubator disk 104 by the sample dispensing tip / reaction container transport mechanism 106.
- the reaction container transport mechanism 115 can rotate and move up and down similarly to the sample dispensing nozzle 103, and after the dispensing and stirring of the sample and the reagent are completed, the reaction container is returned to the incubator disk 104 and a predetermined reaction time has elapsed. It moves upward above 105 and descends, grips and raises the reaction container 105, and conveys the reaction container 105 to the detection unit 116 by rotational movement.
- FIG. 2 is a schematic configuration diagram of the detection unit 116 and its vicinity.
- the detection unit 116 includes a suction nozzle 202, a liquid feeding syringe 203, a suction channel 205 connecting the suction nozzle 202 and the liquid feeding syringe 203, and a flow cell (detection) provided in the middle of the suction channel 205.
- Container) 201 a sample analysis detector 200 provided in the flow cell 201, and a unit main body 116 a in which the flow cell 201 and the detector 200 are accommodated.
- a waste flow path 205 a is branched from the suction flow path 205, and an electromagnetically driven flow path switching valve 204 is provided at a branch portion between the waste flow path 205 a and the suction flow path 205.
- the liquid feeding operation to the flow cell 201 and the liquid feeding operation to the disposal flow path 205a after the analysis are switched.
- the liquid feeding syringe 203 is connected to the suction flow path 205 side by the flow path switching valve 204 and the liquid feeding syringe 203 is aspirated, a reaction liquid, a reaction auxiliary liquid held in a reservoir unit 250 (described later), Various liquids such as cleaning liquid are sucked from the suction nozzle 202 and fed to the flow cell 201.
- the suction nozzle 202 of the detection unit 116 is always fixed at a fixed position without rotating and moving up and down like the sample dispensing nozzle 103. Therefore, a liquid transport mechanism for transporting each liquid container to a suction position by the suction nozzle 202 is installed below the detection unit 116. Since the suction nozzle 202 of the detection unit 116 is always fixed at a fixed position, the flow path continuous with the suction nozzle 202 ⁇ the flow cell 201 ⁇ the suction flow path 205 is deformed as the liquid is sucked and discharged by the suction nozzle 202. There is nothing to do.
- the liquid transport mechanism includes a reservoir unit 250 that moves each liquid container relative to the suction nozzle 202, a reaction auxiliary liquid supply system 251 that supplies a reaction auxiliary liquid and a cleaning liquid to the reservoir unit 250, and a cleaning liquid supply system 252, respectively.
- an air conditioner 212 is provided to bring the ambient temperature around the suction nozzle 202 to a certain temperature range.
- the reaction auxiliary liquid supply system 251 includes reaction auxiliary liquid bottles 215 and 216 and a reaction auxiliary liquid feeding syringe 228.
- the discharge flow paths of the reaction auxiliary liquid bottles 215 and 216 merge with the reaction auxiliary liquid flow path 271 and are connected to the reservoir unit 250 through the liquid temperature adjusting device 209.
- the reaction auxiliary liquid feeding syringe 228 is connected to the reaction auxiliary liquid flow path 271 through the connection flow path 273.
- An electromagnetic valve 226 is provided between the connection position of the connection flow path 273 in the reaction auxiliary liquid flow path 271 and the liquid temperature adjustment device 209, and opens and closes the flow path according to a command from the control device 119.
- a waste liquid flow path 275 is connected to the reaction auxiliary liquid flow path 271, and an electromagnetic valve 224 that opens and closes the flow path according to a command from the control device 119 is installed in the waste liquid flow path 275.
- a supply channel 230 for injecting system water (syringe channel water) is connected to the tube portion of the reaction auxiliary liquid feeding syringe 228.
- An electromagnetic valve 232 is provided between the reaction auxiliary liquid feeding syringe 228 and the supply flow path 230, and opens and closes the flow path according to a command from the control device 119.
- System water is always supplied by a liquid feed mechanism such as a pump when the apparatus is in operation, and system water supply is required for the reaction auxiliary liquid flow path 271 and the connection flow path 273, or dilution for reaction auxiliary liquid. Also used as a liquid.
- a liquid feed mechanism such as a pump when the apparatus is in operation
- system water supply is required for the reaction auxiliary liquid flow path 271 and the connection flow path 273, or dilution for reaction auxiliary liquid.
- one or three or more reaction auxiliary liquid bottles may be provided, even if one bottle runs out of liquid, the operation can be continued by switching the used bottle.
- the discharge flow paths of the reaction auxiliary liquid bottles 215 and 216 are respectively provided with electromagnetic valves 220 and 221 for opening and closing the flow paths, and liquids are respectively provided between the reaction auxiliary liquid bottles 215 and 216 and the electromagnetic valves 220 and 221.
- a cut sensor 219 is installed.
- the liquid shortage sensor 219 is a sensor that detects whether or not the reaction auxiliary liquid is properly sucked out of the reaction auxiliary liquid bottles 215 and 216 when the supply of the reaction auxiliary liquid is instructed. If so, the control device 119 issues an alarm and stops the analysis.
- the reaction auxiliary liquid bottles 215 and 216 are replaced by the operator.
- this liquid breakage sensor 219 is used in the flow path.
- a pressure sensor that detects a pressure change in the discharge flow path during suction or liquid feeding may be used. it can.
- the cleaning liquid supply system 252 has the same configuration as the reaction auxiliary liquid supply system 251. That is, the cleaning liquid supply system 252 includes cleaning liquid bottles 217 and 218 and a cleaning liquid feeding syringe 229. The discharge channels of the cleaning liquid bottles 217 and 218 merge with the cleaning liquid channel 272 and are connected to the reservoir unit 250 through the liquid temperature adjusting device 209. The cleaning liquid feeding syringe 229 is connected to the cleaning liquid flow path 272 via the connection flow path 274. An electromagnetic valve 227 is provided between the connection position of the connection flow path 274 in the cleaning liquid flow path 272 and the liquid temperature adjusting device 209, and opens and closes the flow path according to a command from the control device 119.
- a waste liquid flow path 276 is connected to the cleaning liquid flow path 272, and an electromagnetic valve 225 that opens and closes the flow path according to a command from the control device 119 is installed in the waste liquid flow path 276.
- a supply channel 230 for injecting system water (syringe channel water) is connected to the tube portion of the cleaning liquid feeding syringe 229.
- an electromagnetic valve 234 is provided between the cleaning liquid feeding syringe 229 and the supply flow path 230, and opens and closes the flow path according to a command from the control device 119.
- the system water is constantly supplied by a liquid feed mechanism such as a pump when the apparatus is in operation, and is used as a cleaning liquid diluting liquid when the system water needs to be supplied to the cleaning liquid channel 272 and the connection channel 274. It is done.
- a liquid feed mechanism such as a pump when the apparatus is in operation
- cleaning liquid diluting liquid when the system water needs to be supplied to the cleaning liquid channel 272 and the connection channel 274. It is done.
- cleaning liquid bottles may be sufficient, even if one bottle runs out of liquid by providing multiple, a driving
- the discharge flow paths of the cleaning liquid bottles 217 and 218 are provided with electromagnetic valves 222 and 223 for opening and closing the flow paths, respectively, and the liquid breakage sensor is provided between the cleaning liquid bottles 217 and 218 and the electromagnetic valves 222 and 223, respectively.
- 219 is installed.
- the liquid shortage sensor 219 is a sensor that detects whether or not the cleaning liquid is properly sucked out from the cleaning liquid bottles 217 and 218 when the cleaning liquid supply is commanded.
- the control device 119 issues an alarm and stops the analysis.
- the installation purpose of the liquid shortage sensor 219 is the same as that provided in the reaction auxiliary liquid supply system 251, and the same sensor can be used.
- the cleaning liquid supply system 235 for cleaning the overflow section includes a cleaning liquid bottle 236, an anti-cleaning liquid feeding syringe 237, and an electromagnetic valve 238 provided in the discharge flow path of the cleaning liquid feeding syringe 237.
- the discharge channel of the cleaning liquid bottle 236 merges with the discharge channel of the cleaning liquid feeding syringe 237 and is connected to the reservoir unit 250 through the liquid temperature adjusting device 209.
- the electromagnetic valve 238 opens and closes the flow path according to a command from the control device 119.
- a supply channel 230 for injecting system water (syringe channel water) is connected to the tube portion of the cleaning liquid feeding syringe 237.
- the cleaning liquid bottle 236 may be one, but may be plural. Moreover, it can also be set as the structure which detects a liquid shortage with the liquid shortage sensor 219 like the reaction auxiliary liquid bottles 215 and 216.
- the reservoir unit 250 includes a container holding member 207 disposed below the suction nozzle 202, a holding member driving mechanism 206 that rotates and moves the container holding member 207, and liquid supplied to various liquid containers of the container holding member 207. And a tank 253 that receives the liquid discharged from the various liquid containers of the container holding member 207.
- the container holding member 207 holds a liquid container such as a reaction liquid, a reaction auxiliary liquid, and a cleaning liquid (described later).
- the holding member driving mechanism 206 rotates the container holding member 207 in accordance with the detection operation to appropriately move each container directly below the suction nozzle 202, and moves the container holding member 207 up and down to move the suction nozzle 202. Insert or remove relative to the liquid container.
- a waste channel 214 is connected to the tank 253, and the waste liquid guided to the tank 253 is discharged through the discard channel 214.
- FIG. 3 is an enlarged view of a part III in FIG. 2 and is a longitudinal sectional view of the liquid flow path 211.
- the liquid flow path 211 has a double pipe structure through the internal pipe 260, and has a supply flow path 265 and a drain flow path 264 inside the internal pipe 260.
- the drain channel 264 is connected to the tank 253.
- a reaction auxiliary liquid pipe 262 and a cleaning liquid pipe 263 pass through the internal pipe 260.
- the reaction auxiliary liquid pipe 262 and the cleaning liquid pipe 263 are respectively connected to the reaction auxiliary liquid flow path 271 of the reaction auxiliary liquid supply system 251 and the cleaning liquid flow path 272 of the cleaning liquid supply system 252 described above.
- a cleaning liquid supply system 235 for cleaning the overflow section is connected to a hollow portion 261 of the internal pipe 260 (a flow path inside the internal pipe 260 and outside the reaction auxiliary liquid pipe 262 and the cleaning liquid pipe 263).
- a cleaning liquid in this example, cleaning water
- This cleaning liquid is also adjusted to a predetermined temperature range via the liquid temperature adjusting device 209 in the same manner as the liquid flowing in the reaction auxiliary liquid pipe 271 and the cleaning liquid pipe 262, and the auxiliary auxiliary liquid and the cleaning liquid are kept warm in the internal pipe 260. Also plays a role.
- the drain channel 264 and the supply channel 265 are thermally insulated by a heat insulating material, and the thermal influence from the drain channel 264 is suppressed and the temperature fluctuation of the supply channel 265 is suppressed.
- FIG. 4 is a perspective view of the container holding member 207.
- the container holding member 207 includes a reaction auxiliary liquid supply nozzle 402, a cleaning liquid supply nozzle 403 and a pipe 410 connected to the reaction auxiliary liquid pipe 262, the cleaning liquid pipe 263, and the hollow portion 261, and a reaction container in which the reaction container 105 is installed.
- the reaction container installation unit 401, the cleaning tank 406, the reaction auxiliary liquid container 404, the cleaning liquid container 405, and the special cleaning liquid container 407 are annularly arranged around the liquid channel 211.
- the reaction auxiliary liquid container 404 and the cleaning liquid container 405 are detachable.
- the reaction auxiliary liquid supply nozzle 402 is connected to the reaction auxiliary liquid pipe 262 described above, and the cleaning liquid supply nozzle 403 and the pipe 410 are connected to the cleaning liquid pipe 263, respectively.
- the reaction auxiliary liquid supply nozzle 402 and the cleaning liquid supply nozzle 403 extend upward from the connection portion with the liquid flow path 211 and then fold back with the front ends thereof downward.
- the respective front end portions are the reaction auxiliary liquid container 404 and the cleaning liquid container. 405 respectively.
- the pipe 410 is connected to the cleaning tank 406.
- the reaction auxiliary liquid supply nozzle 402, the cleaning liquid supply nozzle 403, and the pipe 410 are held by the container holding member 207 or the holding member driving mechanism 207. Even if the container holding member 206 is rotated by the holding member driving mechanism 206, the reaction auxiliary liquid container 404, the positional relationship between the cleaning liquid container 405 and the cleaning tank 406 is the same.
- the special cleaning liquid container 407 holds a special cleaning liquid for cleaning the flow cell 201 and the like during maintenance.
- FIG. 5 is a partially broken side view of the container holding member 207 showing the reaction auxiliary liquid container 404 and its peripheral portion in cross section.
- the structure of the reaction auxiliary liquid container 404 and its peripheral part is shown, but the structure of the cleaning liquid container 405 and its peripheral part is the same, and the description thereof is the structure of the next reaction auxiliary liquid container 404 and its peripheral part. It replaces with description of.
- the reaction auxiliary liquid container 404 includes an overflow portion 502.
- This overflow part 502 is a part for overflowing the residual liquid of the reaction auxiliary liquid together with the diluent to the drain flow path 264 as a discarding part by supplying the dilution liquid from the reaction auxiliary liquid supply nozzle 402.
- the auxiliary liquid container 404 is formed in a bowl shape at a position lower than the upper edge portion of the reaction auxiliary liquid container 404 on the drain flow path 264 side.
- the maximum water level of the reaction auxiliary liquid container 404 is defined by the position of the overflow portion 502. Since it is formed in a bowl shape, the liquid is unlikely to stay in the overflow portion 502.
- a cleaning liquid supply flow path 503 is formed in the plate thickness of the wall surface located between the reaction auxiliary liquid container 404 and the liquid flow path 211 at a position below the overflow portion 502.
- the cleaning liquid supply channel 503 is connected to the cleaning liquid supply system 235 for cleaning the overflow portion via the hollow portion 261 described above.
- the cleaning liquid discharge port 504, which is the discharge end of the cleaning liquid supply channel 503, is located immediately below the overflow portion 502, and the cleaning liquid 505 discharged from the cleaning liquid discharge port 504 interferes with the tip of the overflow portion 502, and the drain It is discharged into the flow path 264.
- This cleaning liquid discharge port 504 is similarly installed at the position of the cleaning liquid container 405.
- the container holding member 207 is accommodated in a semi-closed space partitioned by the lower surface of the detection unit 116 and the cover 208 or the like.
- the air conditioner 212 sends the temperature-adjusted air into the space from the circulating air outlet 213 and maintains the periphery of the container holding member 207 in a predetermined temperature range.
- the liquid temperature adjusting device 209 is positioned between the reaction auxiliary liquid supply system 251 and the cleaning liquid supply system 252 and the reservoir unit 240, and is connected to the reservoir unit 250 from the reaction auxiliary liquid supply system 251 and the cleaning liquid supply system 252. The supplied reaction auxiliary liquid and cleaning liquid are adjusted to a certain temperature range.
- FIG. 6 is a flowchart showing the control procedure of the control device 119 regarding the detection operation of the specific component contained in the reaction solution.
- Step 101 is a procedure for sucking the reaction solution and sending it to the flow cell 201.
- the control device 119 first instructs the incubator disk 104, the reaction container transport mechanism 115, and the holding member drive mechanism 206 to set the reaction container setting portion of the predetermined reaction container 105 container holding member 207 on the incubator disk 104.
- the container holding member 207 is rotated, and the reaction container 105 is moved directly below the suction nozzle 202. Thereafter, the container holding member 207 is raised and the suction nozzle 202 is inserted into the reaction container 105.
- the suction nozzle 202 is inserted up to the bottom surface of the reaction vessel 105, but the reaction vessel installation portion 401 is configured to move elastically downward with respect to the vessel holding member 207, and the suction nozzle 202 is at a predetermined pressure. It contacts the bottom surface of the reaction vessel 105.
- the control device 119 opens and discards the flow cell 201 side of the flow path switching valve 204 provided in the suction flow path 205 with the suction nozzle 202 inserted into the reaction container 105.
- the flow path 205a side is closed.
- the reaction liquid is fed into the flow cell 201 through the suction nozzle 202 by driving the liquid feeding syringe 203 in the suction direction (downward).
- a magnetic particle capturing magnet (not shown) is brought close to the flow cell 201.
- the magnetic particle complex containing the analyte in the reaction solution passing through the flow cell 201 and the detection label is magnetically captured in the flow cell 201.
- Step 102 is a procedure for cleaning the suction nozzle 202 and removing the reaction liquid adhering to the suction nozzle 202.
- the control device 119 moves to this procedure and instructs the holding container driving mechanism 206 to lower the container holding member 207 and pull out the suction nozzle 202 from the reaction container 105.
- the container holding member 207 is rotated to move the cleaning tank 406 directly below the suction nozzle 202, and then the container holding member 207 is moved upward to insert the suction nozzle 202 into the cleaning tank 406.
- cleaning water supplied from a cleaning liquid supply hole (not shown) is discharged toward the outer periphery of the suction nozzle 202, and the drain channel 264 is removed while removing the reaction liquid adhering to the outer periphery of the suction nozzle 202. To be discharged.
- Step 103 is a procedure for sucking the reaction auxiliary liquid with the suction nozzle 202 and feeding the reaction auxiliary liquid to the flow cell 201.
- the control device 119 shifts to this procedure, instructs the holding member drive mechanism 206 to lower the container holding member 207, and pulls out the suction nozzle 202 from the cleaning tank 406.
- the container holding member 207 is rotated to move the reaction auxiliary liquid container 404 directly below the suction nozzle 202, and the container holding member 207 is raised to insert the suction nozzle 202 into the reaction auxiliary liquid container 404.
- the container holding member 207 is configured such that when the reaction auxiliary liquid container 404 is directly below the suction nozzle 202, the reaction container installation unit 401 comes to the holding position of the reaction container transport mechanism 115, and the reaction auxiliary liquid container When moving 404 immediately below the suction nozzle 202, the reaction container transport mechanism 115 is instructed to hold the reaction container 105 and transferred from the reaction container installation unit 401 to the disposal reaction container installation unit on the incubator disk 104. . In this way, if the container holding member 207 is configured so that the reaction container transport mechanism 115 can access the reaction container installation unit 401 when the suction nozzle 202 is accessing the reaction auxiliary liquid container 404, the analysis time can be shortened. Can be planned.
- the control device 119 moves the magnetic particle capturing magnet (not shown) away from the flow cell 201, and detects and measures the detection label of the magnetic particle complex in the flow cell 201 by the detector 200. Quantify the object. The measurement result is transmitted to the control device 119.
- control device 119 instructs the reaction auxiliary liquid supply system 251 to perform the same as that in the current suction operation until the next suction of the reaction auxiliary liquid (for example, simultaneously with or immediately after the suction by the suction nozzle 202).
- An amount of reaction auxiliary liquid is replenished from the reaction auxiliary liquid nozzle 402 to the reaction auxiliary liquid container 404.
- the amount of liquid in the reaction auxiliary liquid container 404 is held at a minimum and constant volume, so that liquid spillage and foaming in each container during movement are suppressed, and the container holding member 207 rotates and moves up and down. Stabilization is expected, and analysis cycle efficiency and analysis performance are expected to improve.
- Step 104 is a procedure for sucking the cleaning liquid through the suction nozzle 202 and cleaning the flow cell 201.
- the control device 119 instructs the holding member drive mechanism 206 to lower the container holding member 207 and pulls out the suction nozzle 202 from the reaction auxiliary liquid container 404.
- the container holding member 207 is rotated to move the cleaning liquid container 405 directly below the suction nozzle 202, and the container holding member 207 is raised to insert the suction nozzle 202 into the cleaning liquid container 405.
- the washing liquid is sucked by the suction nozzle 202 in the same manner as described above, and the magnetic particles remaining in the flow cell 201 and the reaction auxiliary liquid are washed.
- the cleaning liquid supply nozzle has the same amount of cleaning liquid as is sucked by the suction nozzle 202 until the next cleaning liquid suction operation (for example, simultaneously with or immediately after the suction by the suction nozzle 202). It is supplied to the cleaning liquid container 405 via 403. As a result, the rotation and vertical movement of the container holding member 207 are stabilized, and analysis cycle efficiency and analysis performance are improved.
- Step 105 is a procedure relating to preparation for the next detection operation.
- the control device 119 instructs the holding member driving mechanism 206 to lower the container holding member 207 and pulls out the suction nozzle 202 from the cleaning liquid container 405.
- the container holding member 207 is rotated to move the reaction auxiliary liquid container 404 directly below the suction nozzle 202, and the container holding member 207 is raised to insert the suction nozzle 202 into the reaction auxiliary liquid container 404.
- the reaction auxiliary liquid is sucked through the suction nozzle 202 to replace the cleaning liquid remaining in the flow cell 201 with the reaction auxiliary liquid.
- the control device 119 Instructs the reaction container transport mechanism 115 to transfer the predetermined reaction container 105 from the incubator disk 104 to the reaction container installation unit 401 and perform a preparation process for the next detection operation. Even in this procedure, the control device 119 replenishes the reaction auxiliary liquid container 404 with the reaction auxiliary liquid before the next suction of the reaction auxiliary liquid.
- This device efficiently performs a plurality of analyzes by repeatedly executing the above analysis procedures 101-105.
- two reaction auxiliary liquid bottles and two cleaning liquid bottles are provided. Each bottle can be switched.
- the liquid shortage sensor 219 provided in the reaction auxiliary liquid bottle 215 pipe
- the control device 119 closes the electromagnetic valve 220 and opens the electromagnetic valve 221 to switch the used bottle to the second reaction auxiliary liquid bottle 216. .
- the cleaning liquid The same applies to the cleaning liquid.
- the liquid shortage sensor 219 (provided in the conduit of the cleaning liquid bottle 217) is used.
- the control device 119 closes the electromagnetic valve 222 and opens the electromagnetic valve 223 to switch the used bottle to the second cleaning liquid bottle 218.
- FIG. 7 is a flowchart showing a control procedure by the control device 119 when replacing the liquid in the liquid container and the liquid flow path.
- Step 301 When the operator instructs the replacement of the liquid in the liquid container and the flow path by an operation unit (not shown) of the control device 119, the control device 119 causes each liquid inside the reaction auxiliary liquid container 404 and the cleaning liquid container 405 to be replaced.
- the reagent replacement start process 301 is executed for dilution, and the procedure is shifted to the diluent supply process 302.
- Step 302 When the procedure is shifted to the diluent supply process 302, the reaction auxiliary liquid supply system 251 and the cleaning liquid supply system 252 are commanded to supply the dilution liquid to the reaction auxiliary liquid container 404 and the cleaning liquid container 405, respectively. Specifically, it is as follows.
- the reaction auxiliary liquid supply system 251 by performing the suction operation of the liquid feeding syringe 228 with the electromagnetic valves 220, 221 and 226 closed and the electromagnetic valves 224 and 232 opened, the dilution liquid is supplied from the supply flow path 230.
- the system water is sucked into the liquid feeding syringe 228.
- the discharge operation of the liquid feeding syringe 228 is performed with the electromagnetic valves 220, 221, 224 closed and the electromagnetic valves 226, 232 opened, thereby allowing the reaction auxiliary liquid channel 271 and the reaction auxiliary liquid nozzle 402 to pass through.
- a diluent is supplied to the reaction auxiliary liquid container 404.
- This operation is repeated (or a specified number of times) until a specified volume of diluent is supplied, and the residual liquid (old reaction auxiliary liquid) in the reaction auxiliary liquid container 404 is diluted so as to be equal to or less than a predetermined dilution ratio.
- the cleaning liquid supply system 252 by performing the suction operation of the liquid feeding syringe 229 with the electromagnetic valves 222, 223, 227 closed and the electromagnetic valves 225, 234 opened, the system is used as a diluent from the supply flow path 230. Water is sucked into the liquid feeding syringe 229. Thereafter, the discharge operation of the liquid feeding syringe 229 is executed with the electromagnetic valves 222, 223, 225 closed and the electromagnetic valves 227, 234 opened, whereby the cleaning liquid container 405 is passed through the cleaning liquid channel 272 and the cleaning liquid nozzle 403. Supply diluent. This operation is repeated (or a specified number of times) until a specified volume of the diluted solution is supplied, and the remaining solution (old cleaning solution) in the cleaning solution container 405 is diluted so as to become a specified dilution ratio or less.
- the control device 119 moves the procedure to the in-channel liquid discharge process 303 and the in-container liquid discharge process 305 after completing the dilution liquid supply process 302.
- Step 303 When the procedure is shifted to the in-channel liquid discharge process 303, the control device 119 instructs the reaction auxiliary liquid supply system 251 and the cleaning liquid supply system 252 to enter the reaction auxiliary liquid flow path 271 and the cleaning liquid flow path 272. The remaining liquid is discharged.
- the suction operation of the liquid feeding syringe 228 is performed with the electromagnetic valves 220, 221, 224, 232 closed and the electromagnetic valve 226 opened.
- the liquid in the flow path is sucked into the flow path 228, and then the electromagnetic valve 226 is closed and the electromagnetic valve 224 is opened to execute the discharge operation, whereby the liquid in the flow path is discharged through the waste liquid flow path 275.
- the suction operation of the liquid feeding syringe 229 is executed with the electromagnetic valves 222, 223, 225, and 234 closed and the electromagnetic valve 227 opened, and the liquid feeding syringe 229 is in the flow path. Then, the liquid in the flow path is discharged through the waste liquid flow path 276 by closing the electromagnetic valve 227 and opening the electromagnetic valve 225 to execute the discharge operation.
- Step 304 When the in-channel liquid discharge process 303 is completed, the control device 119 executes the in-channel liquid filling process 304 and instructs the auxiliary reaction liquid supply system 251 and the cleaning liquid supply system 252 to output the auxiliary reaction liquid bottles 215 and 216. And the waste liquid flow path 275 and between the cleaning liquid bottles 217 and 218 and the waste liquid flow path 276 are filled with the reaction auxiliary liquid and the cleaning liquid, respectively.
- the discharge operation of the liquid feeding syringe 228 is executed in a state where the electromagnetic valves 221, 226, and 232 are closed and the electromagnetic valves 220 and 224 are opened, When 275 is filled with the reaction auxiliary liquid, the solenoid valve 224 is closed.
- the cleaning liquid supply system 252 the discharge operation of the liquid feeding syringe 229 is executed with the electromagnetic valves 223, 227, 234 closed and the electromagnetic valves 222, 225 opened, and the waste liquid flow path 276 is filled with the reaction auxiliary liquid. Then, the solenoid valve 225 is closed.
- Step 305 When the control device 119 finishes the previous diluent supply process 302, the controller 119 executes the in-container liquid discharge process 305 in parallel with the in-flow path liquid discharge process 303.
- the control device 119 instructs the flow path switching valve 204, the liquid feeding syringe 203, and the holding member drive mechanism 206 to discharge the liquid in the reaction auxiliary liquid container 404 and the cleaning liquid container 405.
- the holding member drive mechanism 206 is instructed to move the reaction auxiliary liquid container 404 directly below the suction nozzle 202 and raise it to the suction position.
- the flow path switching valve 204 is opened to the suction flow path 205 side, and the liquid feeding syringe 203 is commanded to suck the liquid in the reaction auxiliary liquid container 404 (see FIG. 8).
- the holding member drive mechanism 206 is lowered, the holding member drive mechanism 206 is rotated so that the cleaning tank 406 comes directly under the suction nozzle 202, and the discharge operation of the liquid feeding syringe 203 is executed to perform the cleaning tank 406.
- the liquid sucked from the container is discharged (see FIG. 9).
- the liquid discharged to the cleaning tank 406 is discharged through the drain channel 264.
- the suction nozzle 202 is also cleaned. If the liquid in the reaction auxiliary liquid container 404 cannot be completely discharged by one suction, the same operation is repeated.
- a cleaning liquid may be supplied to the cleaning tank 406 to replace the cleaning liquid in the tank.
- the control device 119 discharges the liquid in the cleaning liquid container 405 as in the case of the reaction auxiliary liquid container 404. That is, the holding member drive mechanism 206 is commanded to move the cleaning liquid container 405 directly below the suction nozzle 202 and raise it to the suction position. Thereafter, the liquid supply syringe 203 is commanded with the flow path switching valve 204 opened to the suction flow path 205 side, and the liquid in the cleaning liquid container 404 is sucked.
- the holding member drive mechanism 206 When a certain amount has been aspirated, the holding member drive mechanism 206 is lowered, the holding member drive mechanism 206 is rotated so that the cleaning tank 406 comes directly under the suction nozzle 202, and the discharge operation of the liquid feeding syringe 203 is executed to perform the cleaning tank 406.
- the liquid sucked from the container is discharged.
- the suction nozzle 202 is also cleaned.
- the liquid discharged to the cleaning tank 406 is discharged through the drain channel 264.
- the same operation is repeated.
- a cleaning liquid may be supplied to the cleaning tank 406 to replace the cleaning liquid in the tank. Note that the order of the reaction auxiliary liquid container 404 and the cleaning liquid container 405 may be reversed.
- Step 306 When both the in-channel liquid filling process 304 and the in-container liquid discharging process 305 are completed, the control device 119 moves the procedure to the in-container liquid filling process 306, and the reaction auxiliary liquid and the cleaning liquid are respectively transferred to the reaction auxiliary liquid container 404 and the cleaning liquid container 405. Fill. Specifically, in the reaction auxiliary liquid supply system 251 and the cleaning liquid supply system 252, the liquid delivery syringe 228 is closed with the electromagnetic valves 221, 223-225, 232, and 234 closed and the electromagnetic valves 220, 222, 226, and 227 opened.
- the reaction auxiliary liquid container 404 and the cleaning liquid container 405 are filled with the reaction auxiliary liquid and the cleaning liquid via the reaction auxiliary liquid channel 271 and the cleaning liquid channel 272, respectively.
- This operation may be executed while shifting the timing between the reaction auxiliary liquid supply system 252 and the cleaning liquid supply system 252, but the time can be shortened by executing them simultaneously.
- liquid filling operation is sequentially performed on the container holding member 207 of each reservoir unit 250. I will do it.
- the control device 119 ends this flow.
- the diluted liquid is supplied to the liquid container to leave the remaining liquid. Dilute the solution. That is, by thinning the residual liquid to such an extent that the influence on the analysis accuracy when placed in the flow cell 201 is negligible, the liquid in the liquid container can be sucked into the flow cell 201, and therefore, the flow cell 201 is supplied from the suction nozzle 202.
- the number of repetitions of suction and discharge required to finish discharging the liquid in the liquid container can be drastically reduced, thus speeding up the replacement of the liquid in the liquid container, shortening the analysis preparation time, and speeding up the processing. can do.
- the liquid is not simply supplied to the liquid container, but the liquid is supplied by actively supplying the diluent beyond the capacity of the liquid container, and actively overflowing the residual liquid from the liquid container.
- the residual liquid in the container can be diluted more efficiently.
- the liquid when the liquid (reaction auxiliary liquid or cleaning liquid) is excessively supplied to the liquid container, the excess is discharged from the overflow portion 502 to the drain channel 264.
- the amount of liquid When the amount of liquid is small, the liquid tends to stay in the overflow portion 502, and the staying liquid enters the drive portion of the holding member drive mechanism 206, so that the operation of the holding member drive mechanism 206 and the liquid in the liquid container There is a risk that defects in supply amount control and the like may occur, and the efficiency and analysis accuracy of the analysis cycle may be reduced.
- the cleaning liquid supply flow path 503 and the cleaning liquid discharge port 504 are installed, and the discharge end of the overflow portion 502 is cleaned with the cleaning liquid supplied through these, thereby suppressing the remaining liquid from adhering to the overflow portion 502. Therefore, it is possible to suppress an increase in efficiency of the analysis cycle and a decrease in analysis accuracy.
- the suction nozzle 202 does not move during the liquid suction / discharge, and the container holding member 207 is rotated and moved up and down to move each liquid container relative to the suction nozzle 202. Unlike the case where the suction nozzle 202 is moved with respect to the liquid container, deformation or expansion / contraction of the flow path from the suction nozzle 202 to the flow cell 201 can be avoided. Thereby, it is possible to suppress analysis failure factors such as a change in the flow velocity distribution of the liquid in the flow channel and a change in the adsorption / desorption state of the liquid component on the inner surface of the flow channel, thereby improving the analysis accuracy.
- the analysis is not performed for a certain period of time, the liquid container of the container holding member 207 and the liquid inside the flow path connected to this deteriorate due to the temperature or the like, and the liquid is used. If the analysis is performed, the analysis performance may be affected. However, the analysis accuracy is not affected by replacing the liquid in the liquid container and the flow channel with a new one as described above before the analysis is started.
- FIG. 10 is a partially broken side view of a container holding member provided in an automatic analyzer according to a second embodiment of the present invention, and corresponds to FIG.
- the container holding member 207A of the present embodiment includes a discharge port 602, a discharge port 602, and a drain channel 264 that is a disposal unit provided in the lower part of the liquid container such as the reaction auxiliary liquid container 404 and the cleaning liquid 405.
- a discharge flow path 603 to be connected and a control valve 601 provided in the discharge flow path 603 are provided.
- the control device 119 supplies the diluent to the liquid container and opens the control valve 601 in the diluent supply process 302 described above, and overflows the liquid from the liquid container, together with the diluent via the discharge port 602. Drain the remaining liquid from the liquid container.
- the cleaning liquid supply flow path 503 and the cleaning liquid discharge port 504 are not shown in FIG. 10, an overflow section cleaning mechanism can naturally be provided.
- Other configurations are the same as those of the first embodiment, and the same effects as those of the first embodiment can be obtained. Further, by discharging the residual liquid together with the diluent via the discharge port 602 while allowing the liquid to overflow from the liquid container, it is possible to effectively discharge the residual liquid and dilute the liquid in the liquid container. It can also contribute to speeding up the process.
- the liquid container (reaction auxiliary liquid container 404, cleaning liquid container 405, etc.) has been described as an example with respect to the suction nozzle 202 fixed at a fixed position.
- the suction nozzle 202 can also be configured to move relative to each other.
- the essential feature of the present invention is that the residual liquid is diluted with a diluent and the liquid is sucked into the flow cell 201 when the liquid in the liquid container is discharged. Yes, the same effect can be obtained.
- the liquid feeding syringe 228 , 229 and the connection flow paths 273 and 274 are provided with a reaction auxiliary liquid diluent bottle and a cleaning liquid dilution bottle, and between the connection flow paths 273 and 274 and the reaction auxiliary liquid dilution bottle and the cleaning liquid dilution bottle.
- the dilution liquid can be supplied to the reaction auxiliary liquid container 404 and the cleaning liquid container 405 to dilute the remaining liquid.
- the configuration in which the diluent is supplied to the reaction auxiliary liquid container 404 and the cleaning liquid container 405 via the reaction auxiliary liquid supply system 251 and the cleaning liquid supply system 252 has been described as an example. It is also possible to separately provide a supply system that supplies the diluent directly to the liquid container 404 and the cleaning liquid container 405, and to drive the supply system at the time of dilution to supply the diluent to the reaction auxiliary liquid container 404 and the cleaning liquid container 405. .
- the cleaning liquid supply system 235 for cleaning the overflow portion is provided separately from the cleaning liquid supply system 252 that supplies the cleaning liquid to the cleaning liquid container 405 and the cleaning tank 406
- the cleaning liquid supply nozzle 403 and the cleaning tank are provided.
- a flow path branched from a flow path (for example, pipe 410) connected to 406 is connected to the cleaning liquid supply flow path 503, and a part of the cleaning liquid supplied to the cleaning tank 406 is supplied to the cleaning liquid supply flow path 503.
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Abstract
Description
(1)装置構成
図1は本発明の適用対象となる自動分析装置の一例の全体構成を表す平面図である。
図6は反応液に含まれる特定成分の検出動作に関する制御装置119の制御手順を表すフローチャートである。
ステップ101は反応液を吸引しフローセル201に送液する手順である。この手順において、制御装置119は、まず、インキュベータディスク104、反応容器搬送機構115及び保持部材駆動機構206に指令して、インキュベータディスク104上の所定の反応容器105容器保持部材207の反応容器設置部401に移載し、容器保持部材207を回転させて吸引ノズル202の直下に反応容器105を移動させる。その後、容器保持部材207を上昇させて吸引ノズル202を反応容器105に挿入する。このとき、吸引ノズル202は反応容器105の底面まで挿入されるが、反応容器設置部401は容器保持部材207に対して下方向に弾性的に可動する構成としてあり、吸引ノズル202は所定圧力で反応容器105の底面に接する。
ステップ102は吸引ノズル202を洗浄して吸引ノズル202に付着した反応液を除去する手順である。吸引ノズル202による反応液の吸引作業が終了したら、制御装置119はこの手順に移行して保持容器駆動機構206に指令し、容器保持部材207を下降させて吸引ノズル202を反応容器105内から引き抜く。次いで容器保持部材207を回転さて洗浄槽406を吸引ノズル202の直下へと移動させた後、容器保持部材207を上方移動させて吸引ノズル202を洗浄槽406に挿入する。洗浄槽406では洗浄液供給孔(図示せず)から供給される洗浄水が吸引ノズル202の外周部に向けて吐出され、吸引ノズル202の外周部に付着した反応液を除去しつつドレイン流路264に排出される。
ステップ103は、吸引ノズル202で反応補助液を吸引し、フローセル201に反応補助液を送液する手順である。吸引ノズル202の洗浄が終了したら、制御装置119この手順に移行して保持部材駆動機構206に指令して容器保持部材207を下降させ、吸引ノズル202を洗浄槽406から引き出す。次いで、容器保持部材207を回転移動させて反応補助液容器404を吸引ノズル202の直下へ移動させ、容器保持部材207を上昇させて吸引ノズル202を反応補助液容器404に挿入する。なお、容器保持部材207は、反応補助液容器404が吸引ノズル202の直下にあるときに反応容器設置部401が反応容器搬送機構115の把持位置に来るように構成されており、反応補助液容器404を吸引ノズル202の直下に移動させる際に、反応容器搬送機構115に指令して反応容器105を把持し、反応容器設置部401からインキュベータディスク104上の廃棄用反応容器設置部へ移載する。このように、吸引ノズル202が反応補助液容器404にアクセスしているときに反応容器搬送機構115が反応容器設置部401にアクセスできるように容器保持部材207を構成しておけば分析時間の短縮が図れる。
ステップ104は、吸引ノズル202を介して洗浄液を吸引し、フローセル201を洗浄する手順である。検出動作を終えてこの手順に移行したら、制御装置119は、保持部材駆動機構206に指令して容器保持部材207を下降させ、吸引ノズル202を反応補助液容器404から引き出す。次いで、容器保持部材207を回転させて洗浄液容器405を吸引ノズル202の直下に移動させ、容器保持部材207を上昇させて吸引ノズル202を洗浄液容器405に挿入する。その後、先と同様にして吸引ノズル202で洗浄液を吸引し、フローセル201内に残留する磁性粒子と反応補助液を洗浄する。反応補助液の補充と同じように、次回の洗浄液の吸引動作まで(例えば、吸引ノズル202による吸引と同時又はその直後)に、吸引ノズル202によって吸引される容量と同量の洗浄液が洗浄液供給ノズル403を介して洗浄液容器405に供給される。これによって容器保持部材207の回転及び上下移動の安定化が図られ、分析サイクル効率と分析性能の向上が実現される。
ステップ105は、次回の検出作業の準備に係る手順である。洗浄液の吸引を終えてこの手順に移行したら、制御装置119は、保持部材駆動機構206に指令して容器保持部材207を下降させ、吸引ノズル202を洗浄液容器405から引き出す。次いで、容器保持部材207を回転させて反応補助液容器404を吸引ノズル202の直下に移動させ、容器保持部材207を上昇させて吸引ノズル202を反応補助液容器404に挿入する。そして吸引ノズル202を介して反応補助液を吸引してフローセル201内部に残留する洗浄液を反応補助液で置換し、また、反応補助液容器404が吸引ノズル202の直下にある間に、制御装置119は、反応容器搬送機構115に指令してインキュベータディスク104から反応容器設置部401に所定の反応容器105を移載して次の検出作業の準備工程を実施する。なお、この手順でも、制御装置119は次回の反応補助液の吸引までに反応補助液容器404に反応補助液を補充する。
続いて、反応補助液の入れ替えに伴って反応補助液容器404や洗浄液容器405、反応補助液流路262、洗浄液流路263等の液体を置換する動作について説明する。なお、以下の動作は、洗浄液容器405や洗浄液流路263等の液体を置換する場合にも適用できる。
液体容器及び流路内の液体の入れ替えが制御装置119の操作部(図示せず)でオペレータによって指示されると、制御装置119は、反応補助液容器404及び洗浄液容器405の内部の各液を希釈すべく試薬置換開始処理301の処理を実行し、希釈液供給処理302に手順を移す。
希釈液供給処理302に手順を移すと、反応補助液供給系統251及び洗浄液供給系統252に指令して、反応補助液容器404及び洗浄液容器405にそれぞれ希釈液を供給する。具体的には、次の通りである。
流路内液体排出処理303に手順を移したら、制御装置119は、反応補助液供給系統251及び洗浄液供給系統252に指令して、反応補助液流路271及び洗浄液流路272等の流路内に残存する液体を排出する。具体的には、反応補助液供給系統251においては、例えば、電磁弁220,221,224,232を閉じて電磁弁226を開けた状態で送液シリンジ228の吸引動作を実行して送液シリンジ228に流路内の液体を吸引し、その後、電磁弁226を閉じ電磁弁224を開けて吐出動作を実行することにより、廃液流路275を介して流路内の液体を排出する。一方、洗浄液供給系統252においては、例えば、電磁弁222,223,225,234を閉じて電磁弁227を開けた状態で送液シリンジ229の吸引動作を実行して送液シリンジ229に流路内の液体を吸引し、その後、電磁弁227を閉じ電磁弁225を開けて吐出動作を実行することにより、廃液流路276を介して流路内の液体を排出する。
流路内液体排出処理303を終えたら、制御装置119は、流路内液体充填処理304を実行し、反応補助液供給系統251及び洗浄液供給系統252に指令して、反応補助液ボトル215,216と廃液流路275との間、及び洗浄液ボトル217,218と廃液流路276との間に、それぞれ反応補助液及び洗浄液を充填する。具体的には、反応補助液供給系統251においては、例えば、電磁弁221,226,232を閉じて電磁弁220,224を開けた状態で送液シリンジ228の吐出動作を実行し、廃液流路275が反応補助液で満たされたところで電磁弁224を閉じる。一方、洗浄液供給系統252においては、電磁弁223,227,234を閉じて電磁弁222,225を開けた状態で送液シリンジ229の吐出動作を実行し、廃液流路276が反応補助液で満たされたところで電磁弁225を閉じる。
制御装置119は、先の希釈液供給処理302を終えたら、上記流路内液体排出処理303と並行して容器内液体排出処理305を実行する。この処理において、制御装置119は、流路切替弁204、送液シリンジ203、保持部材駆動機構206に指令して反応補助液容器404及び洗浄液容器405内の液体を排出する。具体的には、まず、保持部材駆動機構206に指令して反応補助液容器404を吸引ノズル202の直下に移動し吸引位置まで上昇させる。その後、流路切替弁204を吸引流路205側に開放し、送液シリンジ203に指令して反応補助液容器404内の液体を吸引する(図8参照)。一定量を吸引したら保持部材駆動機構206を下降させて、吸引ノズル202の直下に洗浄槽406が来るよう保持部材駆動機構206を回転させ、送液シリンジ203の吐出動作を実行して洗浄槽406内に容器から吸引した液体を排出する(図9参照)。洗浄槽406に排出された液体はドレイン流路264を介して排出される。吸引ノズル202の洗浄も実施する。1回の吸引で反応補助液容器404内の液体を排出し切れない場合には同様の動作を繰り返す。この液体吐出の際又は液体吐出の後、洗浄槽406に洗浄液を供給して槽内の洗浄液を入れ替えるようにしても良い。
流路内液体充填処理304と容器内液体排出処理305をともに終えたら、制御装置119は容器内液体充填処理306に手順を移し、反応補助液容器404及び洗浄液容器405にそれぞれ反応補助液及び洗浄液を充填する。具体的には、反応補助液供給系統251及び洗浄液供給系統252において、電磁弁221,223-225,232,234を閉じて電磁弁220,222,226,227を開けた状態で送液シリンジ228,229の吸引・吐出動作を実行することで、反応補助液流路271及び洗浄液流路272を介して反応補助液容器404及び洗浄液容器405に反応補助液及び洗浄液を充填する。
この動作は、反応補助液供給系統252と洗浄液供給系統252とでタイミングをずらして実行しても良いが、同時に実行することで時間を短縮することができる。また、各1つの反応補助液供給系統251と洗浄液供給系統252に対して検出ユニット116及びリザーバユニット250を複数設置する場合、各リザーバユニット250の容器保持部材207に対して順次液体充填動作を実行していく。この容器内液体充填処理306が完了したら、制御装置119はこのフローを終了する。
本実施の形態によれば、吸引ノズル202で吸引する液体容器(反応補助液容器404や洗浄液容器405)の残液を排出するに当たって、液体容器に希釈液を供給して残液を希釈する。すなわち、フローセル201に入れた場合の分析精度への影響が無視できる程度に残液を薄めることによって、液体容器内の液体を吸引してフローセル201に入れることができるので、吸引ノズル202からフローセル201までの流路容積に制限されることがなく、1回の吸引動作でより多くの液体を吸引して洗浄槽406に吐出することができる。したがって、液体容器内の液体を排出し終えるまでに要する吸引・吐出の繰り返し回数を大幅に減じることができるので、液体容器の液体の入れ替えを迅速化し、分析準備時間を短縮して処理を高速化することができる。
図10は本発明の第2の実施の形態に係る自動分析装置に備えられた容器保持部材の一部破断側面図であり、先の図5に対応する図である。
なお、上記の各実施の形態においては、オーバーフロー部502を洗浄するのに洗浄液供給流路503及び洗浄液吐出口504から吐出させた洗浄液を用いる場合を例に挙げて説明したが、洗浄液の代わりに空気を吹き付けてオーバーフロー部502に残った液体を取り除く構成とすることもできる。
119 制御装置
200 検出器
201 フローセル
202 吸引ノズル
203 送液シリンジ
205 吸引流路
251 反応補助液供給系統(希釈液供給手段)
252 洗浄液供給系統(希釈液供給手段、オーバーフロー部洗浄系統)
262 反応補助液配管(希釈液供給手段)
263 洗浄液配管(希釈液供給手段、オーバーフロー部洗浄系統)
264 ドレイン流路(廃棄部)
402 反応補助液ノズル(希釈液供給手段)
403 洗浄液ノズル(希釈液供給手段)
404 反応補助液容器(液体容器)
405 洗浄液容器(液体容器)
406 洗浄槽(廃棄部)
502 オーバーフロー部
503 洗浄液供給流路(オーバーフロー部洗浄系統)
504 洗浄液吐出口(オーバーフロー部洗浄系統)
601 制御弁
602 排出口
603 排出流路
Claims (6)
- 吸引ノズルと、
送液手段と、
前記吸引ノズル及び前記送液手段を接続する流路と、
前記流路の途中に設けたフローセルと、
前記フローセルに設けた試料分析用の検出器と、
前記吸引ノズルで吸引する液体を貯留する液体容器と、
前記液体容器に希釈液を供給する希釈液供給手段と、
前記液体容器内の残液を廃棄する廃棄部と、
前記液体容器から残液を排出する際、前記希釈液供給手段を駆動して前記液体容器に希釈液を供給した後、前記送液手段を駆動して前記吸引ノズルを介して前記フローセルに希釈された残液を吸引し、吸引した残液を前記廃棄部に吐出させる制御装置と
を備えたことを特徴とする自動分析装置。 - 請求項1の自動分析装置において、
前記制御装置は、前記希釈液供給手段を駆動して前記液体容器に希釈液を供給し、希釈液とともに前記残液を前記液体容器から前記廃棄部に溢出させることを特徴とする自動分析装置。 - 請求項2の自動分析装置において、
液体容器は、希釈液及び残液を前記廃棄部に溢出させるオーバーフロー部を備えていることを特徴とする自動分析装置。 - 請求項3の自動分析装置において、
前記溢出部を洗浄液で洗浄するオーバーフロー部洗浄系統を備えていることを特徴とする自動分析装置。 - 請求項3又は4の自動分析装置において、
前記液体容器の下部に設けた排出口と、
前記排出口及び前記廃棄部を接続する排出流路と、
前記排出流路に設けた制御弁とを備えており、
前記制御装置は、前記希釈液供給手段を駆動して前記液体容器に希釈液を供給するとともに前記制御弁を開放し、前記排出口を介して希釈液とともに前記残液を前記液体容器から排出することを特徴とする自動分析装置。 - 吸引ノズルと、送液手段と、前記吸引ノズル及び前記送液手段を接続する流路と、前記流路の途中に設けたフローセルと、前記フローセルに設けた試料分析用の検出器と、前記吸引ノズルで吸引する液体を貯留する液体容器とを備えた自動分析装置の液体排出方法において、
前記液体容器から残液を排出する際、前記液体容器に希釈液を供給した後、前記送液手段を駆動して前記吸引ノズルを介して前記フローセルに希釈された残液を吸引し、吸引した残液を廃棄部に吐出する
ことを特徴とする液体排出方法。
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