CN109507441B - Sample retesting device and retesting method thereof - Google Patents
Sample retesting device and retesting method thereof Download PDFInfo
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- CN109507441B CN109507441B CN201811252937.2A CN201811252937A CN109507441B CN 109507441 B CN109507441 B CN 109507441B CN 201811252937 A CN201811252937 A CN 201811252937A CN 109507441 B CN109507441 B CN 109507441B
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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
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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
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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
-
- 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
- G01N2035/0474—Details of actuating means for conveyors or pipettes
- G01N2035/0491—Position sensing, encoding; closed-loop control
Abstract
The invention discloses a sample retest device and a retest method thereof, wherein the sample retest device comprises a workbench and a test tube rack, a plurality of test tubes for storing samples are arranged on the test tube rack, and a sample suction device, a judgment device and a transmission device are arranged on the workbench; the transmission device is arranged at the bottom of the test tube rack and drives the test tube rack to reciprocate; the sample sucking device and the transmission device are both positioned on one side of the transmission device and correspond to the moving path of the test tube rack; the judging device is used for judging whether test tubes are stored in the corresponding positions on the test tube rack or not and judging whether the test tubes are consistent with sample test tubes needing to be tested back or not. The sample retesting device disclosed by the invention can automatically move the test tube rack, transport the tested sample back to the corresponding position again, judge whether the test tube is removed or replaced in the retesting process, improve the retesting precision and improve the retesting efficiency.
Description
Technical Field
The invention relates to the technical field of sample processing devices, in particular to a sample retest device and a retest method thereof.
Background
The test tube rack that has now has a plurality of test tube positions, and the test tube that will hold different samples leaves the test tube position one by one in, carry out retesting to certain test tube internal sample and carry out time measurement back promptly, often the tester is manual to be corresponding the test tube position and remove to inhaling appearance device below and carry out the test back, but the test back of sample both needs the tester to look for corresponding test tube position from the test tube rack, even if found corresponding test tube position, also can't confirm test tube in the current test tube position with test last time whether unanimous in this test tube position, the deviation appears easily, thereby lead to going back to test inefficiency.
Accordingly, there is a need for improvements and developments in the art.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method for solving the above mentioned defects of the prior art
A sample retest device and a retest method thereof aim to improve sample retest efficiency.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a sample retesting device comprises a workbench and a test tube rack, wherein the test tube rack is provided with a plurality of test tubes for storing samples, and the workbench is provided with a sample sucking device, a judging device and a transmission device; the transmission device is arranged at the bottom of the test tube rack and drives the test tube rack to reciprocate; the sample sucking device and the transmission device are both positioned on one side of the transmission device and correspond to the moving path of the test tube rack; the judging device is used for judging whether test tubes are stored in the corresponding positions on the test tube rack or not and judging whether the test tubes are consistent with sample test tubes needing to be tested back or not.
The sample return testing device comprises a transmission device, a sample return testing device and a sample return testing device, wherein the transmission device comprises a driving motor, a conveyor belt component, a support structure, a plurality of shifting forks and a plurality of rotating shafts, the plurality of rotating shafts are sequentially arranged on the support structure, and two ends of the conveyor belt component are respectively connected with the driving motor and the rotating shafts so as to drive the rotating shafts to rotate through the driving motor; the shifting fork is connected with one end of the rotating shaft; when the rotating shaft drives the shifting fork to rotate, the two ends of the shifting fork can be alternately inserted into the test tube rack and push the test tube rack to move.
The sample retest device, wherein, the last cell type opto-coupler that is provided with of supporting structure, deviate from in the pivot shift fork one end is provided with the opto-coupler separation blade, the opto-coupler separation blade follows the pivot rotates, the opto-coupler separation blade with the cell type opto-coupler cooperatees, be provided with two breachs that deviate from each other on the opto-coupler separation blade.
The sample return testing device is characterized in that the distances between two adjacent test tubes are equal.
The sample retest device is characterized in that a bar code which plays a role of unique identification is arranged on the outer side of each test tube; the judging device comprises an optical fiber sensor and a bar code scanner for scanning the bar code; the optical fiber sensor and the bar code scanner are respectively arranged on two opposite sides of the transmission device.
A method for performing a back test based on the sample back test device as described in any of the above embodiments, the method comprising:
monitoring whether a retest instruction for retesting a first sample is received in real time;
when the retest instruction is received, the transmission device drives the test tube rack to move until the corresponding test tube displacement moves to the judgment position corresponding to the judgment device when the first sample is detected last time;
judging whether a test tube exists in the test tube position and whether the test tube is consistent with the test tube containing the first sample through a judging device;
if the test tube position has a test tube, and the test tube is consistent with the corresponding test tube in the last detection of the first sample, the transmission device drives the test tube position to move to the sample suction position, and the sample suction test is carried out.
The retest method, wherein when receiving the retest instruction, the transmission device drives the test tube rack to move, and moving the test tube rack corresponding to the first sample to the determination position corresponding to the determination device includes:
when the retest instruction is received, calculating the retest times that the groove-shaped optocoupler is not shielded when the test tube position moves from the current position to the judgment position;
The transmission device drives the test tube rack to move until the times that the groove-shaped optical coupler is not shielded are equal to the back test times, the test tube position corresponds to the judgment position, and the transmission device stops.
The retest method comprises the step of determining the retest instruction, wherein the retest instruction comprises the serial number of the test tube position where the test tube containing the first sample is located and the bar code information of the test tube containing the first sample.
The retest method, wherein, if the test tube position has the test tube, and this test tube is unanimous with the test tube that holds the first sample, transmission device drive the test tube position move to inhale the appearance position, and inhale the appearance test and specifically include:
if the test tube position has a test tube, the transmission device drives the test tube rack to move to the sample sucking position;
judging whether the test tubes in the test tube positions are consistent with the test tubes in the last detection of the first sample through the judging device;
and if the test tube position is consistent with the sample sucking position, the transmission device is closed when the test tube position moves to the sample sucking position, and a sample sucking test is carried out.
The retest method, wherein the distance between two adjacent test tube positions is smaller than the distance between the sample sucking position and the judging position.
Has the beneficial effects that: the sample retesting device can automatically move the test tube rack, transport the tested sample back to the corresponding position again, judge whether the test tube is moved away or replaced in the retesting process, improve the retesting precision and improve the retesting efficiency.
Drawings
FIG. 1 is a schematic diagram of a sample recovery apparatus according to the present invention;
FIG. 2 is a schematic view of the structure of the transfer device of the present invention;
FIG. 3 is a schematic view of the test tube rack of the present invention;
fig. 4 is a reference diagram of the use state of the test tube rack and the transmission device in the invention;
FIG. 5 is a schematic structural view of a light coupling baffle according to the present invention;
FIG. 6 is a reference view showing a state in which the fork is just inserted into the groove or about to be separated from the groove in the present invention;
FIG. 7 is a reference view of the turntable used to reset the fork of the present invention;
FIG. 8 is a flow chart of a preferred embodiment of the retest method of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Please refer to FIG. 1-FIG. 8. The invention provides a sample retesting device, which comprises a workbench 1 and a test tube rack 2, wherein the test tube rack 2 is provided with a plurality of test tubes for storing samples, and the workbench 1 is provided with a sample sucking device, a judging device and a transmission device 3; the transmission device 3 is arranged at the bottom of the test tube rack 2 and drives the test tube rack 2 to reciprocate; the sample sucking device and the transmission device 3 are both positioned on one side of the transmission device 3 and correspond to the moving path of the test tube rack 2; the judging device is used for judging whether test tubes are stored in the corresponding positions on the test tube rack 2 or not and judging whether the test tubes are consistent with sample test tubes needing to be tested back or not.
The transmission device 3 drives the test tube rack 2 to reciprocate; on the moving path of the test tube rack 2, the position corresponding to the sample sucking device is a sample sucking position 4, and the position corresponding to the judging device is a judging position 5. When a certain sample needs to be retested, the transmission device 3 transmits the test tube position corresponding to the previous sample detection to the judgment position 5, judges whether the test tube position has a test tube through the judgment device, judges whether the current test tube is consistent with the test tube containing the sample in the previous detection, and can ensure that the sample needing to be retested is not replaced only when the test tube position has the test tube and the test tube is consistent with the test tube containing the sample in the previous detection; after the judgment of the judging device is completed, the transmission device 3 drives the test tube position to move to the sample sucking position 4 for carrying out the return test.
The sample retesting device not only can automatically move the test tube rack 2, and transport the tested sample back to the corresponding position (the sample sucking position 4) again, but also can judge whether the test tube is removed or replaced in the retesting process, so that the retesting precision is improved, and the retesting efficiency is improved.
As shown in fig. 2, the transmission device 3 includes a driving motor 301, a conveyor belt assembly, a support structure, a plurality of shifting forks 307 and a plurality of rotating shafts 308, the plurality of rotating shafts 308 are sequentially arranged on the support structure, and two ends of the conveyor belt assembly are respectively connected with the driving motor 301 and the rotating shafts 308, so that the rotating shafts 308 are driven to rotate by the driving motor 301; the shifting fork 307 is connected with one end of the rotating shaft 308; when the rotating shaft 308 drives the shifting fork 307 to rotate, the two ends of the shifting fork 307 can be alternately inserted into the test tube rack 2 and push the test tube rack 2 to move.
The number of the shifting forks 307 is equal to that of the rotating shafts 308, and the shifting forks 307 correspond to the rotating shafts 308 one by one; the shaft 308 is mounted on the frame structure and is rotatable relative to the frame structure; when driving motor 301 starts, driving motor 301's pivot drives pivot 308 for the supporting structure rotates, thereby drives shift fork 307 rotates, shift fork 307 rotates the in-process, and its both ends insert in turn 2 bottoms of test-tube rack, and through with the contact of test-tube rack 2 promotes 2 removal of test-tube rack. In a preferred embodiment, when the rotating shaft of the driving motor 301 rotates forward, the shifting fork 307 pushes the test tube rack 2 to move along the direction (forward direction) from the determination device to the sample sucking device; when the rotating shaft of the driving motor 301 rotates reversely, the shifting fork 307 pushes the test tube rack 2 to move reversely.
As shown in fig. 6 and 7, the test tube rack 2 includes a rack body 21, a plurality of accommodating cavities 22 provided on the rack body 21, and a plurality of grooves 23 provided at the bottom of the rack body 21. The accommodating cavity 22 forms test tube positions for accommodating test tubes, the grooves 23 correspond to the accommodating cavity 22 one by one, namely the grooves 23 correspond to the test tube positions one by one; the groove 23 is used for accommodating the shifting fork 307, when one end of the shifting fork 307 is inserted into the groove 23, the shifting fork 307 can be in contact with the side wall of the groove 23, and the driving force of the rotating shaft of the driving motor 301 pushes the test tube rack 2 to move.
The two sides of the groove 23 along the moving direction of the test tube rack 2 are used for contacting with the shift fork 307, in a preferred embodiment, when the rotating shaft of the driving motor 301 rotates forwards, the first end of the shift fork 307 is firstly inserted into the groove 23 and contacts with the side wall of the groove 23 facing the forward direction, the volume of the shift fork 307 inserted into the groove 23 is gradually increased along with the forward movement of the test tube rack 2, when the two ends of the shift fork 307 are in a vertical state, the volume of the shift fork 307 inserted into the groove 23 is maximum, and along with the movement of the test tube rack 2, the volume of the shift fork 307 located in the groove 23 is gradually reduced until the shift fork 307 is separated from the groove 23; along with the continuous positive rotation of the rotating shaft of the driving motor 301, the second end of the shifting fork 307 is inserted into the groove 23, contacts with the groove 23 towards the positive side wall, and pushes the test tube rack 2 to continue to move in the positive direction. Similarly, when the rotating shaft of the driving motor 301 rotates reversely, the two ends of the shifting fork 307 alternately contact with the groove 23 and face the opposite side walls, and the test tube rack 2 is pushed to move reversely.
Further, as shown in fig. 3, the distances between two adjacent test tubes are equal and are both L, that is, the distances between two adjacent test tube positions are both L; as shown in fig. 7, initially, the fork 307 is in a horizontal state, and a dotted circle in the figure indicates a rotation path of the fork 307; the shifting fork 307 rotates 180 degrees, and the forward or backward movement distance of the test tube rack 2 is equal to the distance L between two adjacent test tube positions. In the process that the shifting fork 307 rotates for 180 degrees, the front third stroke and the rear third stroke are idle strokes, in the preferred embodiment, the current position of the shifting fork 307 is the original point, when the shifting fork 307 rotates for 180 degrees positively, the shifting fork 307 rotates for 60 degrees from 0 degrees and rotates for 180 degrees from 120 degrees, and the shifting fork 307 is idle strokes, does not contact with the side wall of the groove 23, and cannot push the test tube rack 2 to move; when the shifting fork 307 moves from 60 degrees to 120 degrees, the shifting fork 307 is located in the groove 23 and pushes the test tube rack 2 to move.
In order to improve the stability of the test tube rack 2 during movement and prevent samples from being spilled out during the movement of the test tube rack 2, as shown in fig. 3, the number of the shift forks 307 and the number of the rotating shafts 308 are three, and the distances between two adjacent shift forks 307 are equal. The support structure comprises a first support 305 and a second support 306 which are arranged at intervals, and the driving motor 301 is positioned between the first support 305 and the second support 306; three shift forks, one of which is arranged on the first bracket 305 and the other two of which are arranged on the second bracket 306; the conveyor belt assembly comprises a first conveyor belt 302, a second conveyor belt 303 and a third conveyor belt 304; the first conveyor belt 302 connects the rotating shaft of the first support 305 with the rotating shaft of the driving motor 301, the second conveyor belt 303 connects the rotating shaft of the driving motor 301 with the rotating shaft of the second support 306, which is closest to the driving motor 301, and the third conveyor belt 304 connects the two rotating shafts of the second support 306, so that the transmission of the first conveyor belt 302 to the shift fork on the first support 305 and the transmission of the second conveyor belt 303 and the third conveyor belt 304 to the two shift forks on the second support 306 are realized. The first rack 305 and the second rack 306 are arranged in a straight line, and are parallel to the moving direction of the test tube rack 2.
Further, as shown in fig. 4 and 5, a groove-shaped optical coupler 6 is arranged on the support structure, the rotating shaft 308 deviates from one end of the shifting fork 307, an optical coupler blocking piece 7 is arranged at one end of the rotating shaft 308, the optical coupler blocking piece 7 follows the rotating shaft 308 to rotate, the optical coupler blocking piece 7 is matched with the groove-shaped optical coupler 6, and two gaps 71 which deviate from each other are formed in the optical coupler blocking piece 7. The optical coupling baffle 7 is fixedly connected with the rotating shaft 308 so as to rotate along with the rotation of the rotating shaft 308; work as during opto-coupler separation blade 7 rotates, two breach 71 in turn with cell type opto-coupler 6 is corresponding, does not shelter from cell type opto-coupler 6, through opto-coupler separation blade 7 does not shelter from cell type opto-coupler 6's number of times is judged the distance that 2 removal of test-tube rack, it is right to promote the accuracy that 2 removal of test-tube rack distance calculated. The opto-coupler separation blade 7 rotates a week, does not shelter from twice cell type opto-coupler 6, the distance that 2 removals of test-tube rack equals the twice of distance between two adjacent test-tube positions.
A bar code for unique identification is arranged on the outer side of each test tube; the determination means comprises an optical fiber sensor 8 and a bar code scanner 9 for scanning the bar code, as shown in fig. 1; the optical fiber sensor 8 and the bar code scanner 9 are respectively arranged on two opposite sides of the transmission device 3, so that the phenomenon of incomplete bar code reading caused by mutual interference between the optical fiber sensor 8 and the bar code scanner 9 is avoided. The optical fiber sensor 8 is used for sensing whether a test tube is arranged at the test tube position corresponding to the judgment position 5; the bar code scanner 9 is configured to scan and acquire the bar code information of the test tube at the determination position 5, so as to determine whether the bar code information is consistent with the test tube detected last time.
Based on the sample recovery device in any of the above embodiments, the present invention further provides a recovery method, as shown in fig. 8, the recovery method includes:
and S10, monitoring whether a retest instruction for retesting the first sample is received in real time.
The step S10 is preceded by:
pasting a bar code on each test tube in advance, numbering each test tube position on the test tube in advance, wherein each bar code is used for uniquely identifying the sample in the test tube;
and acquiring the first direction of movement of the test tube rack 2 after sample suction.
Obtain first direction is favorable to judging when needs are gone back to a certain sample time, the direction of rotation of driving motor 301 pivot to do benefit to the calculation the distance that test-tube rack 2 returned. In a preferred embodiment, the first direction is a direction pointing from the determination bit 5 to the sample suction bit 4.
The retest instruction comprises a test tube position number where the test tube containing the first sample is located, bar code information of the test tube containing the first sample and the first direction.
And S20, when the retest instruction is received, the transmission device drives the test tube rack to move until the test tube corresponding to the first sample is detected last time moves to the judgment position 5 corresponding to the judgment device.
The step S20 specifically includes:
and S21, when the retest instruction is received, calculating the retest times when the test tube position moves from the current position to the judgment position, wherein the grooved optocoupler is not shielded.
When the return test instruction is received, calculating a distance (return test distance) between the test tube position and the determination position 5, and determining the rotation direction of the rotating shaft of the driving motor 301 during return according to the return test distance and the first direction: when the first direction is the forward direction, that is, before the retest instruction is received, the test tube rack 2 is far away from the judgment position 5 in the forward direction after sample suction is completed, and then the rotating shaft of the driving motor 301 needs to be rotated reversely during retest; when the first direction is the reverse direction (that is, before the return measurement instruction is received, the driving motor 301 reverses after sample suction is completed), and the return measurement distance is smaller than the distance between the sample suction position 4 and the judgment position 5, the rotating shaft of the driving motor 301 needs to continue to reverse to perform return measurement; when the first direction is the reverse direction and the return measurement distance is greater than the distance between the sample suction position 4 and the judgment position 5, the rotating shaft of the driving motor 301 needs to rotate forward to perform return measurement.
The following takes the first direction as the forward direction as an example, and the retest method is specifically described:
when the retest instruction is received, the test tube position number, the barcode information, and the first direction are acquired, the test tube position number (first test tube position number) currently located at the judgment position 5 is acquired, the absolute value of the difference between the first test tube position number and the test tube position number is calculated, the product of the absolute value and the distance between two adjacent test tube positions is calculated, the retest distance is acquired, and the retest times that the optical coupler groove type 6 is not blocked are calculated according to the retest distance.
In a preferred embodiment, the distance between two adjacent test tube positions is 20 mm; when the shift fork 307 rotates a week, the test tube rack 2 moves the distance and is 40mm, just the cell type opto-coupler 6 is not sheltered from the number of times and is 2 times, then the number of times of retching is the ratio of distance between the distance of retching and two adjacent test tube positions.
For example, test tube position serial number is 3, first test tube position serial number is 7, then the return survey distance is 80mm, the number of times that 6 groove type opto-couplers are not sheltered from is 4.
Further, in order to avoid inaccurate calculation of the return measurement distance due to displacement of the test tube rack 2 when touched before the return measurement and avoid spilling of a sample due to jumping of the test tube rack 2 caused by sudden reversing rotation of the rotating shaft of the driving motor 301, in the invention, when the return measurement instruction is received, the test tube rack 2 is stopped when moving in the first direction for a predetermined distance, and then the calculation of the return measurement distance is performed.
S22, the transmission device drives the test tube rack to move until the times that the grooved optocouplers are not shielded are equal to the back test times, the test tube position corresponds to the judgment position 5, and the transmission device stops.
Concretely, driving motor 301 pivot antiport, drive test-tube rack 2 orientation judge that position 5 removes, and the record the number of times that cell type opto-coupler 6 was not sheltered from, work as the number of times that cell type opto-coupler 6 was not sheltered from equals when returning the number of times of surveying, the test tube position with judge that position 5 corresponds, driving motor 301 stops, makes the test tube position stop judge position 5.
And S30, judging whether a test tube is in the test tube position and whether the test tube is consistent with the test tube containing the first sample through a judging device.
S40, if the test tube position has a test tube, and the test tube is consistent with the corresponding test tube when the first sample is detected last time, the transmission device drives the test tube position to move to the sample suction position 4, and a sample suction test is carried out.
The step S40 specifically includes:
s41, if the test tube position has a test tube, the transmission device drives the test tube rack to move to the sample sucking position;
s42, judging whether the test tube in the test tube position is consistent with the test tube in the last detection of the first sample through the judging device;
And S43, if the test tube position is consistent with the sample suction position, closing the transmission device when the test tube position moves to the sample suction position, and performing a sample suction test.
Further, the distance between two adjacent test tube positions is smaller than the distance between the sample sucking position 4 and the judging position 5; preferably, the distance between the sample suction position 4 and the judgment position 5 is 40 mm.
Specifically, the optical fiber sensor 8 is turned on, whether a test tube is in the test tube position is sensed by the optical fiber sensor 8, and if the test tube is in the test tube position, the bar code scanner 9 is turned on; if the test tube position does not have the test tube, then report to the police, just driving motor 301 closes, test-tube rack 2 stops at the present position.
If the test tube position has a test tube, starting the bar code scanner 9, starting the driving motor 301, and simultaneously controlling the rotating shaft of the driving motor 301 to rotate forwards; the test tube position moves from the judging position 5 to the sample sucking position 4, and meanwhile, the bar code scanner 9 scans the bar codes of the test tubes in the test tube position in the moving process of the test tube rack 2 and acquires first bar code information; because the distance between two adjacent test tube positions is smaller than the distance between the sample sucking position 4 and the judging position 5, when the first bar code information is scanned, the test tube positions are not moved to the sample sucking position 4.
If the first bar code information is consistent with the bar code information in the retest instruction, the test tube in the test tube position is not replaced, the sample can be retested, and the rotating shaft of the driving motor 301 continuously rotates forwards until the test tube position reaches the sample suction position 4, so that the sample suction retest is performed; if the first barcode information is inconsistent with the barcode information in the retest command, the driving motor 301 stops rotating and gives an alarm.
In summary, the present invention provides a sample return test apparatus and a return test method thereof, which includes a workbench and a test tube rack, wherein the test tube rack is provided with a plurality of test tubes for storing samples, and the workbench is provided with a sample suction device, a determination device and a transmission device; the transmission device is arranged at the bottom of the test tube rack and drives the test tube rack to reciprocate; the sample sucking device and the transmission device are both positioned on one side of the transmission device and correspond to the moving path of the test tube rack; the judging device is used for judging whether the test tube is stored in the corresponding position on the test tube rack or not and judging whether the test tube is consistent with a sample test tube needing to be tested back or not. The sample retesting device disclosed by the invention can automatically move the test tube rack, transport the tested sample back to the corresponding position again, judge whether the test tube is removed or replaced in the retesting process, improve the retesting precision and improve the retesting efficiency.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. A sample retesting device comprises a workbench and a test tube rack, wherein the test tube rack is provided with a plurality of test tubes for storing samples, and the sample retesting device is characterized in that the workbench is provided with a sample sucking device, a judging device and a transmission device; the transmission device is arranged at the bottom of the test tube rack and drives the test tube rack to reciprocate; the judging device and the sample sucking device are both positioned on one side of the transmission device and correspond to the moving path of the test tube rack; the judging device is used for judging whether a test tube is stored in a position corresponding to the test tube rack or not and judging whether the test tube is consistent with a sample test tube needing to be tested back or not; on the moving path of the test tube rack, the position corresponding to the sample sucking device is a sample sucking position, and the position corresponding to the judging device is a judging position; when a certain sample needs to be tested back, the transmission device transmits the corresponding test tube position when the sample is tested last time to the judgment position, judges whether the test tube position has a test tube through the judgment device, judges whether the current test tube is consistent with the test tube containing the sample in the last test, and judges that the sample needing to be tested back is not replaced only if the test tube position has the test tube and the test tube is consistent with the test tube containing the sample in the last test; and after the judgment of the judging device is finished, the transmission device drives the test tube position to move to the sample sucking position for carrying out retesting.
2. The sample back-testing device according to claim 1, wherein the transmission device comprises a driving motor, a conveyor belt assembly, a support structure, a plurality of shifting forks and a plurality of rotating shafts, the plurality of rotating shafts are sequentially arranged on the support structure, and two ends of the conveyor belt assembly are respectively connected with the driving motor and the rotating shafts so as to drive the rotating shafts to rotate through the driving motor; the shifting fork is connected with one end of the rotating shaft; when the rotating shaft drives the shifting fork to rotate, two ends of the shifting fork can be alternately inserted into the test tube rack and push the test tube rack to move.
3. The sample reconnaissance device of claim 2, wherein the bracket structure is provided with a groove-shaped optocoupler, one end of the rotating shaft, which is far away from the shifting fork, is provided with an optocoupler catch, the optocoupler catch rotates along with the rotating shaft, the optocoupler catch is matched with the groove-shaped optocoupler, and the optocoupler catch is provided with two notches which are far away from each other.
4. The apparatus according to claim 3, wherein the distance between two adjacent test tubes is equal.
5. The sample testing device according to claim 4, wherein a bar code for unique identification is arranged on the outer side of each test tube; the judging device comprises an optical fiber sensor and a bar code scanner for scanning the bar code; the optical fiber sensor and the bar code scanner are respectively arranged on two opposite sides of the transmission device.
6. A method for testing back based on the sample testing device according to any one of claims 3-5, wherein the method for testing back comprises:
monitoring whether a retest instruction for retesting a first sample is received in real time;
when the retest instruction is received, the transmission device drives the test tube rack to move until the corresponding test tube displacement moves to the judgment position corresponding to the judgment device when the first sample is detected last time;
judging whether a test tube exists in the test tube position and whether the test tube is consistent with the test tube containing the first sample through a judging device;
if the test tube position has a test tube, and the test tube is consistent with the corresponding test tube in the last detection of the first sample, the transmission device drives the test tube position to move to the sample suction position, and the sample suction test is carried out.
7. The method according to claim 6, wherein, when receiving the test-back instruction, the transmission device drives the test tube rack to move until the test tube rack corresponding to the first sample is moved to the determination position corresponding to the determination device last time, specifically comprises:
when the retest instruction is received, calculating the retest times that the groove-shaped optocoupler is not shielded when the test tube position moves from the current position to the judgment position;
The transmission device drives the test tube rack to move until the times that the groove-shaped optical coupler is not shielded are equal to the back test times, the test tube position corresponds to the judgment position, and the transmission device stops.
8. The method according to claim 6, wherein the retest instruction comprises a test tube level number of a test tube containing the first sample, and bar code information of the test tube containing the first sample.
9. The method according to claim 6, wherein if the test tube station has a test tube that is identical to the test tube containing the first sample, the transferring device drives the test tube station to move to the sample sucking station, and the sample sucking test comprises:
if the test tube position has a test tube, the transmission device drives the test tube rack to move to the sample sucking position;
judging whether the test tube in the test tube position is consistent with the test tube in the last time of detecting the first sample through the judging device;
and if the test tube position is consistent with the sample sucking position, the transmission device is closed when the test tube position moves to the sample sucking position, and a sample sucking test is carried out.
10. The method of claim 6, wherein the distance between two adjacent test tube positions is smaller than the distance between the sample aspirating position and the determining position.
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| CN201811252937.2A CN109507441B (en) | 2018-10-25 | 2018-10-25 | Sample retesting device and retesting method thereof |
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| CN110208560A (en) * | 2019-06-26 | 2019-09-06 | 迈克医疗电子有限公司 | Test tube detecting device and test tube detection method |
| CN117214453B (en) * | 2023-11-07 | 2024-04-05 | 长春迈克赛德医疗科技有限公司 | Sample suction needle system and sample suction method |
| CN117554313B (en) * | 2024-01-10 | 2024-04-02 | 绍兴君鸿智能科技有限公司 | Automatic detection system and automatic detection method |
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