Pipetting device for fluorescence immunoassay analyzer
By introducing lateral and longitudinal shift mechanisms into the fluorescence immunoassay device, combined with the design of lifting motor and limiting through-slot, the problem of slow and unstable movement of the pipetting device is solved, and the rapid, stable and precise movement of the liquid aspiration needle is achieved, and the detection efficiency is improved.
Patent Information
- Application Number
- CN202422107652.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-08-28
AI Technical Summary
The existing pipetting devices move slowly and unstable in fluorescence immunoassays, and are prone to deviations.
The design includes a transverse shift mechanism, a longitudinal shift mechanism and a liquid suction mechanism is adopted. The lifting motor drives the lifting gear and rack, and combines the coordination of the limiting through groove and gear groove to achieve accurate lifting and translation of the liquid suction needle, ensuring movement stability and accuracy.
The rapid, stable and precise movement of the liquid aspiration needle is achieved, ensuring that the reagents or samples can be accurately transferred to the reaction cup, and the detection efficiency is improved.
Smart Images
Figure CN223144752U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of in vitro immunoassay, and particularly relates to a pipetting device for a fluorescence immunoassay analyzer. Background Art
[0002] The pipetting device is used to be installed in a fluorescence immunoassay analyzer. Its main function is to extract reagents and samples from different test tubes and transfer them to the same reaction cup for reaction. The existing pipetting device has a slow moving speed, is unstable, and is prone to deviation. Content of the Utility Model
[0003] In order to solve the above problems, the utility model provides a pipetting device for a fluorescence immunoassay analyzer, which has stable movement, accurate movement position, and is convenient to use.
[0004] The technical solution adopted by the utility model is to provide a pipetting device for a fluorescence immunoassay analyzer, which includes a transverse movement mechanism, a longitudinal movement mechanism arranged on the transverse movement mechanism, and a liquid suction mechanism arranged on the longitudinal movement mechanism. The liquid suction mechanism includes a liquid suction seat arranged on the longitudinal movement mechanism, a lifting motor arranged on the liquid suction seat, a lifting gear rotatably arranged on the liquid suction seat, a lifting rack slidably arranged up and down on the liquid suction seat, and a liquid suction needle arranged on the lifting rack. The lifting motor is in transmission connection with the lifting gear, the lifting gear is engaged with the lifting rack, the liquid suction needle has a degree of freedom of lifting by means of the drive of the lifting motor, and the liquid suction needle has degrees of freedom of transverse and longitudinal translation by means of the transverse movement mechanism and the longitudinal movement mechanism.
[0005] It further includes a limiting through groove vertically arranged on one side of the liquid suction seat, and a gear groove arranged on the liquid suction seat on the same side as and communicating with the limiting through groove. The width of the opening of the limiting through groove is smaller than the width inside the groove. The lifting rack is slidably inserted into the limiting through groove, the lifting gear is rotatably installed in the gear groove, and the lifting motor is arranged on the other side of the liquid suction seat and the output end of the lifting motor passes through the liquid suction seat and is in transmission connection with the lifting gear.
[0006] The transverse movement mechanism includes a front sliding rod and a rear sliding rod which are longitudinally arranged opposite to each other, a front sliding seat and a rear sliding seat which are respectively slidably arranged on the front sliding rod and the rear sliding rod, a first gear and a second gear which are spaced above or below the front sliding rod, a first belt which is arranged on the first gear and the second gear and is parallel to the front sliding rod, a third gear and a fourth gear which are spaced above or below the rear sliding rod, a second belt which is arranged on the third gear and the fourth gear and is parallel to the rear sliding rod, a transmission rod which is arranged between the first gear and the third gear, and a transverse movement motor which is in transmission connection with one end of the transmission rod. The first gear corresponds longitudinally to the third gear, the first belt corresponds longitudinally to the second belt, the second gear and the fourth gear correspond longitudinally, the first belt and the second belt are respectively parallel to the front sliding rod and the rear sliding rod, the front sliding seat and the rear sliding seat are respectively connected to the first belt and the second belt, and the longitudinal movement mechanism is arranged between the front sliding seat and the rear sliding seat.
[0007] There are two sets of the first gear, the second gear, the first belt, the third gear, the fourth gear, and the second belt longitudinally corresponding. The front sliding seat and the rear sliding seat are transversely arranged in two sets and are respectively connected to different sets of the first belt and the second belt. There are two transmission rods and two transverse movement motors. One transmission rod is connected to the first gear and the third gear of the first group and passes through the first gear and the second gear of the second group. The other transmission rod is connected to the third gear and the fourth gear of the second group and passes through the third gear and the fourth gear of the first group. The transverse movement motors are respectively in transmission connection with different transmission rods.
[0008] The longitudinal movement mechanism includes a longitudinal movement motor arranged on the front sliding seat or the rear sliding seat, a fifth gear and a sixth gear rotatably arranged on the front sliding seat and the rear sliding seat, a third belt arranged on the fifth gear and the sixth gear, and a longitudinal sliding rod arranged between the front sliding seat and the rear sliding seat. The liquid suction seat is slidably mounted on the longitudinal sliding rod and one end thereof is connected to the third belt.
[0009] The beneficial effect of the present utility model is to provide a pipetting device for a fluorescence immunoassay analyzer. The lifting motor drives the lifting gear to drive the lifting rack to perform uniform lifting. The lifting process is stable, the lifting speed is fast, and there is no deviation during the lifting process, so that the liquid suction needle can be accurately inserted into the corresponding test tube. Description of the Drawings
[0010] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;
[0011] Figure 2 is a structural schematic diagram of the liquid suction needle of the present utility model.
[0012] In the attached drawings, 1 is a liquid suction seat, 2 is a lifting motor, 3 is a lifting gear, 4 is a lifting rack, 5 is a liquid suction needle, 6 is a limiting through groove, 7 is a gear groove, 8 is a front sliding rod, 9 is a rear sliding rod, 10 is a front sliding seat, 11 is a rear sliding seat, 12 is a first gear, 13 is a second gear, 14 is a first belt, 15 is a third gear, 16 is a fourth gear, 17 is a second belt, 18 is a transmission rod, 19 is a lateral movement motor, 20 is a longitudinal movement motor, 21 is a third belt, and 22 is a longitudinal sliding rod. Detailed implementation manners
[0013] As Figure 1-2 shown, the present utility model provides a pipetting device for a fluorescence immunoassay analyzer, which includes a lateral movement mechanism, a longitudinal movement mechanism arranged on the lateral movement mechanism, and a liquid suction mechanism arranged on the longitudinal movement mechanism. The liquid suction mechanism includes a liquid suction seat 1 arranged on the longitudinal movement mechanism, a lifting motor 2 arranged on the liquid suction seat 1, a lifting gear 3 rotatably arranged on the liquid suction seat 1, a lifting rack 4 slidably arranged up and down on the liquid suction seat 1, and a liquid suction needle 5 arranged on the lifting rack 4. The lifting motor 2 is in transmission connection with the lifting gear 3, the lifting gear 3 meshes with the lifting rack 4, the liquid suction needle 5 has the freedom of lifting driven by the lifting motor 2, and the liquid suction needle 5 has the freedom of lateral and longitudinal translation by means of the lateral movement mechanism and the longitudinal movement mechanism.
[0014] The liquid suction needle 5 is used to extract the reagent or sample in the test tube. The liquid suction needle 5 moves to the upper part of the test tube to be extracted through the lateral movement mechanism and the longitudinal movement mechanism. The lifting motor 2 drives the lifting gear 3 to rotate, driving the lifting rack 4 to move downward. The liquid suction needle 5 on the lifting rack 4 moves downward synchronously until the liquid suction needle 5 is inserted into the test tube and extracts the reagent or sample in the test tube. After extraction, the lifting motor 2 drives the lifting gear 3 to reverse, driving the lifting rack 4 to move upward. The liquid suction needle 5 on the lifting rack 4 moves upward synchronously, and then moves to the upper part of the reaction cup through the lateral movement mechanism and the longitudinal movement mechanism, repeating the lifting action, and injecting the extracted reagent or sample into the reaction cup to complete pipetting. In this design, the lifting motor 2 drives the lifting gear 3 to drive the lifting rack 4 to lift evenly. The lifting process is stable, the lifting speed is fast, and there will be no deviation during the lifting process.
[0015] As Figure 1-2 shown, it further includes a limiting through groove 6 vertically arranged on one side of the liquid suction seat 1, and a gear groove 7 arranged on the liquid suction seat 1 and on the same side as and communicating with the limiting through groove 6. The width of the opening of the limiting through groove 6 is smaller than the width inside the groove. The lifting rack 4 is slidably inserted into the limiting through groove 6, the lifting gear 3 is rotatably installed in the gear groove 7, and the lifting motor 2 is arranged on the other side of the liquid suction seat 1 and the output end of the lifting motor 2 passes through the liquid suction seat 1 and is in transmission connection with the lifting gear 3.
[0016] The limit through slot 6 is a reduced-opening through slot structure extending vertically. The lifting rack 4 is inserted into the limit through slot 6 and can slide up and down. The limit through slot 6 limits and guides the lifting rack 4 to further ensure the accuracy during lifting, so that the liquid suction needle 5 will not deviate during the lifting process. The gear slot 7 is used to install the lifting gear 3, which is convenient for installation and positioning, and at the same time plays a protective role for the lifting gear 3.
[0017] As Figure 1-2 shown, the transverse movement mechanism includes a front slide bar 8 and a rear slide bar 9 arranged longitudinally opposite to each other, a front slide seat 10 and a rear slide seat 11 slidably arranged on the front slide bar 8 and the rear slide bar 9 respectively, a first gear 12 and a second gear 13 arranged at intervals above or below the front slide bar 8, a first belt 14 arranged on the first gear 12 and the second gear 13 and parallel to the front slide bar 8, a third gear 15 and a fourth gear 16 arranged at intervals above or below the rear slide bar 9, a second belt 17 arranged on the third gear 15 and the fourth gear 16 and parallel to the rear slide bar 9, a transmission rod 18 arranged between the first gear 12 and the third gear 15, and a transverse movement motor 19 drivingly connected to one end of the transmission rod 18. The first gear 12 and the third gear 15 are longitudinally corresponding, the first belt 14 and the second belt 17 are longitudinally corresponding, the second gear 13 and the fourth gear 16 are longitudinally corresponding, the first belt 14 and the second belt 17 are respectively parallel to the front slide bar 8 and the rear slide bar 9, the front slide seat 10 and the rear slide seat 11 are respectively connected to the first belt 14 and the second belt 17, and the longitudinal movement mechanism is arranged between the front slide seat 10 and the rear slide seat 11.
[0018] The first gear 12, the second gear 13, the first belt 14, the third gear 15, the fourth gear 16, and the second belt 17 are all located above or below the front slide bar 8 and the rear slide bar 9. The first gear 12 and the third gear 15 are installed on the transmission rod 18. One end of the transmission rod 18 is connected to the driving end of the transverse movement motor 19. The transverse movement motor 19 drives the transmission rod 18 to rotate, driving the first gear 12 and the third gear 15 to rotate. The second gear 13 and the fourth gear 16 are driven, thereby driving the first belt 14 and the second belt 17 to perform circular motion, driving the front slide seat 10 and the rear slide seat 11 on the front slide bar 8 and the rear slide bar 9 to perform transverse translation. Among them, the front slide bar 8 and the rear slide bar 9 play a role of guiding and supporting the front slide seat 10 and the rear slide seat 11, and the first belt 14 and the second belt 17 play a driving role for the front slide seat 10 and the rear slide seat 11. This design has stable translation, fast speed, uniform force, and the moving distance can be accurately controlled, making it very convenient to use.
[0019] As Figure 1-2As shown, there are two sets of the first gear 12, the second gear 13, the first belt 14, the third gear 15, the fourth gear 16, and the second belt 17 arranged longitudinally in correspondence. There are two sets of the front sliding seat 10 and the rear sliding seat 11 arranged transversely and are respectively connected to different sets of the first belt 14 and the second belt 17. There are two driving rods 18 and two transverse movement motors 19. One driving rod 18 is connected to the first gear 12 and the third gear 15 of the first set and passes through the first gear 12 and the second gear 13 of the second set. The other driving rod 18 is connected to the third gear 15 and the fourth gear 16 of the second set and passes through the third gear 15 and the fourth gear 16 of the first set. The transverse movement motors 19 are respectively in transmission connection with different driving rods 18.
[0020] The first gear 12, the second gear 13, and the first belt 14 are arranged in two sets longitudinally corresponding above or below the front sliding rod 8. The third gear 15, the fourth gear 16, and the second belt 17 are installed in two sets longitudinally corresponding above or below the rear sliding rod 9 and are longitudinally corresponding to the above two sets in sequence.
[0021] The first gears 12 and the third gears 15 of the two sets are both installed on one driving rod 18. The connection mode between the first gear 12 and the third gear 15 of one set and the driving rod 18 is fixed to achieve synchronous rotation. The first gear 12 and the third gear 15 of the other set are installed on the driving rod 18 through bearings and do not rotate synchronously. One end of the driving rod 18 is connected to the transverse movement motor 19.
[0022] The second gears 13 and the fourth gears 16 of the two sets are both installed on another driving rod 18. The connection mode between the second gear 13 and the fourth gear 16 of one set and the driving rod 18 is fixed to achieve synchronous rotation, and it is a different set from the one where the first gear 12 and the third gear 15 are fixedly connected to the driving rod 18. The second gear 13 and the fourth gear 16 of the other set are installed on the driving rod 18 through bearings and do not rotate synchronously. One end of the driving rod 18 is connected to another transverse movement motor 19.
[0023] Among them, the transverse movement motor 19 drives the first gear 12 and the third gear 15 of one set to rotate through the driving rod 18. Another transverse movement motor 19 and another driving rod 18 drive the second gear 13 and the third gear 15 of the other set to rotate. In this way, the front sliding seat 10 and the rear sliding seat 11 of different sets can be respectively driven to translate on the front sliding rod 8 and the rear sliding rod 9, so that the horizontal and vertical translations of the two liquid suction needles 5 can be respectively controlled independently. The structure design is concise, the cost is low, it is easy to install, the liquid transfer efficiency is greatly improved, and the detection time required is reduced.
[0024] As Figure 1-2As shown, the longitudinal movement mechanism includes a longitudinal movement motor 20 provided on the front sliding seat 10 or the rear sliding seat 11, a fifth gear and a sixth gear rotatably provided on the front sliding seat 10 and the rear sliding seat 11, a third belt 21 provided on the fifth gear and the sixth gear, and a longitudinal sliding rod 22 provided between the front sliding seat 10 and the rear sliding seat 11. The liquid suction seat 1 is slidably mounted on the longitudinal sliding rod 22 and one end thereof is connected to the third belt 21.
[0025] The longitudinal movement motor 20 drives the fifth gear and the sixth gear to rotate, drives the third belt 21 to move in a circular motion, and drives the liquid suction seat 1 connected to the third belt 21 to perform longitudinal translation. The longitudinal sliding rod 22 plays a role in guiding and supporting the liquid suction seat 1. This design has a simple structure, stable translation, and convenient use.
Claims
1. A pipetting device for a fluorescence immunoassay analyzer, comprising a transverse movement mechanism, a longitudinal movement mechanism arranged on the transverse movement mechanism, and a liquid suction mechanism arranged on the longitudinal movement mechanism, characterized in that: The liquid suction mechanism includes a liquid suction seat (1) arranged on the longitudinal movement mechanism, a lifting motor (2) arranged on the liquid suction seat (1), a lifting gear (3) rotatably arranged on the liquid suction seat (1), a lifting rack (4) slidably arranged up and down on the liquid suction seat (1), and a liquid suction needle (5) arranged on the lifting rack (4). The lifting motor (2) is in transmission connection with the lifting gear (3), the lifting gear (3) meshes with the lifting rack (4), the liquid suction needle (5) has the freedom of lifting driven by the lifting motor (2), and the liquid suction needle (5) has the freedom of horizontal and longitudinal translation by means of the transverse movement mechanism and the longitudinal movement mechanism.
2. The pipetting device for a fluorescence immunoassay analyzer according to claim 1, characterized in that: It further includes a limiting through groove (6) vertically arranged on one side of the liquid suction seat (1), and a gear groove (7) arranged on the liquid suction seat (1) on the same side as and communicating with the limiting through groove (6). The width of the opening of the limiting through groove (6) is smaller than the width inside the groove. The lifting rack (4) is slidably inserted into the limiting through groove (6), the lifting gear (3) is rotatably installed in the gear groove (7), and the lifting motor (2) is arranged on the other side of the liquid suction seat (1) and the output end of the lifting motor (2) passes through the liquid suction seat (1) and is in transmission connection with the lifting gear (3).
3. The pipetting device for a fluorescence immunoassay analyzer according to claim 1, characterized in that: The transverse movement mechanism includes a front sliding rod (8) and a rear sliding rod (9) arranged longitudinally opposite to each other, a front sliding seat (10) and a rear sliding seat (11) slidably arranged on the front sliding rod (8) and the rear sliding rod (9) respectively, a first gear (12) and a second gear (13) arranged at intervals above or below the front sliding rod (8), a first belt (14) arranged on the first gear (12) and the second gear (13) and parallel to the front sliding rod (8), a third gear (15) and a fourth gear (16) arranged at intervals above or below the rear sliding rod (9), a second belt (17) arranged on the third gear (15) and the fourth gear (16) and parallel to the rear sliding rod (9), a transmission rod (18) arranged between the first gear (12) and the third gear (15), and a transverse movement motor (19) in transmission connection with one end of the transmission rod (18). The first gear (12) corresponds longitudinally to the third gear (15), the first belt (14) corresponds longitudinally to the second belt (17), the second gear (13) corresponds longitudinally to the fourth gear (16), the first belt (14) and the second belt (17) are respectively parallel to the front sliding rod (8) and the rear sliding rod (9), the front sliding seat (10) and the rear sliding seat (11) are respectively connected to the first belt (14) and the second belt (17), and the longitudinal movement mechanism is arranged between the front sliding seat (10) and the rear sliding seat (11).
4. A pipetting device for a fluorescence immunoassay analyzer, characterized in that: There are two sets of the first gear (12), the second gear (13), the first belt (14), the third gear (15), the fourth gear (16), and the second belt (17) arranged longitudinally in correspondence. There are two sets of the front sliding seat (10) and the rear sliding seat (11) arranged transversely and respectively connected to different sets of the first belt (14) and the second belt (17). There are two drive rods (18) and two transverse movement motors (19). One drive rod (18) is connected to the first gear (12) and the third gear (15) of the first set and passes through the first gear (12) and the second gear (13) of the second set. The other drive rod (18) is connected to the third gear (15) and the fourth gear (16) of the second set and passes through the third gear (15) and the fourth gear (16) of the first set. The transverse movement motors (19) are respectively in driving connection with different drive rods (18).
5. The pipetting device for a fluorescence immunoassay analyzer according to claim 3, characterized in that: The longitudinal movement mechanism includes a longitudinal movement motor (20) arranged on the front sliding seat (10) or the rear sliding seat (11), a fifth gear and a sixth gear rotatably arranged on the front sliding seat (10) and the rear sliding seat (11), a third belt (21) arranged on the fifth gear and the sixth gear, and a longitudinal sliding rod (22) arranged between the front sliding seat (10) and the rear sliding seat (11). The liquid suction seat (1) is slidably mounted on the longitudinal sliding rod (22) and is connected to the third belt (21) at one end.