Positioning objective table structure of elisa plate
By designing a positioning stage structure and utilizing a combination of movable support columns and clamping tabs, the problems of easy displacement and inconvenient operation of ELISA plates during use were solved, achieving stable positioning and convenient operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN AISTRONDA MEDICAL TECHNOLOGY CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-05-05
AI Technical Summary
U-shaped bottom enzyme-labeled plates are prone to displacement due to accidental force during use, which can cause sample leakage. Furthermore, removing the enzyme-labeled strip requires the use of both hands, which is inconvenient.
A positioning stage structure was designed, which includes a positioning platform and components such as a fixed support column, a movable support column, a bidirectional threaded rod, a linkage back plate, and a pusher plate. The movable support column and pusher head, which move laterally and longitudinally, stably position the enzyme label plate, and the clamping plate provides downward pressure to ensure that the enzyme label plate is not easily displaced during use, and the enzyme label strip can be removed with one hand.
It achieves stable positioning of the ELISA plate, avoids sample leakage, and makes operation more convenient. The ELISA strip can be removed with one hand, improving efficiency.
Smart Images
Figure CN224203201U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of biological experimental carrier technology, and in particular to a positioning stage structure for an enzyme-linked immunosorbent assay (ELISA) plate. Background Technology
[0002] ELISA plates are the core consumables in enzyme-linked immunosorbent assays (ELISA). As a solid-phase carrier, they participate in the immune reaction. Their surface adsorbs biomolecules such as antigens and antibodies through hydrophobic bonds, ionic bonds, or covalent bonds, and is used to detect target proteins or molecules in samples. At present, there are many types of ELISA plates, such as flat-bottomed ELISA plates, U-shaped bottom ELISA plates, and V-shaped bottom ELISA plates. Among them, U-shaped bottom ELISA plates have a higher refractive index, which facilitates sample addition, aspiration, and mixing. Therefore, they are usually not placed on an ELISA reader and the color change is observed directly by visual inspection.
[0003] However, when using U-shaped bottom enzyme-labeled plates, it was found that they are usually placed directly on the test platform without any positioning device to restrict their position. This makes it easy for the entire plate to shift due to accidental force during sample addition, which can easily cause the sample to leak out. In addition, when removing the enzyme label, one hand needs to press down on the plate and the other hand needs to pry the enzyme label out, which is inconvenient due to the need for both hands to work together.
[0004] Therefore, it is necessary to provide a new positioning stage structure for ELISA plates to solve the above-mentioned technical problems. Utility Model Content
[0005] The purpose of this invention is to provide a positioning stage structure for an enzyme-labeled plate with good positioning effect, wide applicability, and easy removal of enzyme-labeled strips.
[0006] To solve the above-mentioned technical problems, the positioning stage structure of the enzyme-labeled plate provided by this utility model includes: a positioning stage and an enzyme-labeled plate disposed on the top of the positioning stage. Two fixed abutment columns are fixedly installed on the top of the positioning stage. A sliding plate is slidably installed on the positioning stage. Two movable abutment columns are fixedly installed on the side of the sliding plate near the fixed abutment columns. An internal cavity is formed on the positioning stage. A bidirectional threaded rod is rotatably installed in the internal cavity. One end of the bidirectional threaded rod extends outside the positioning stage, and two linkage back plates are threadedly installed on the bidirectional threaded rod. The tops of the two linkage back plates extend above the positioning stage and are slidably connected to the top of the positioning stage. Pushing pieces are fixedly installed on the tops of the two linkage back plates. Pushing heads are fixedly installed on the sides of the two pushing pieces that are close to each other. Ball bearings are movably embedded at the ends of the four pushing heads.
[0007] Preferably, the positioning platform has a through opening, the bottom of the sliding plate extends into the through opening, and two support bars are fixedly installed in the through opening. Both support bars pass through the sliding plate and are slidably connected to the sliding plate. A first fastening bolt is threaded on one side of the sliding plate, and the end of the first fastening bolt abuts against one of the support bars.
[0008] Preferably, a first rectangular slide plate is fixedly installed on the top of the positioning platform, a first downward pressure strip is slidably installed on the first rectangular slide plate, and a first clamping piece is fixedly installed at the bottom of the first downward pressure strip. A second rectangular slide plate is fixedly installed on the top of the sliding plate, a second downward pressure strip is slidably installed on the second rectangular slide plate, and a second clamping piece is fixedly installed at the bottom of the second downward pressure strip.
[0009] Preferably, a second fastening bolt is threaded onto the first lower pressure bar, the end of which abuts against the first rectangular sliding plate; and a third fastening bolt is threaded onto the second lower pressure bar, the end of which abuts against the second rectangular sliding plate.
[0010] Preferably, the top of the positioning platform has a transverse sliding opening, and the sliding plate passes through the transverse sliding opening and contacts the inner wall of the transverse sliding opening.
[0011] Preferably, the top of the positioning platform has two longitudinal movement openings, and the two linkage back plates respectively pass through the two longitudinal movement openings and contact the inner wall of the corresponding longitudinal movement opening.
[0012] Preferably, an anti-slip rotating rod is fixedly installed at one end of the bidirectional threaded rod outside the positioning platform, and a protruding plate is fixedly installed on one side of the positioning platform. A fourth fastening bolt is threaded onto the protruding plate, and the end of the fourth fastening bolt abuts against the anti-slip rotating rod.
[0013] Compared with related technologies, the positioning stage structure of the enzyme-labeled plate provided by this utility model has the following beneficial effects:
[0014] This invention provides a positioning stage structure for an enzyme-linked immunosorbent assay (ELISA) plate. Through a laterally movable abutment post and a longitudinally movable push head, it can position and hold ELISA plates of different outer dimensions. Simultaneously, a first and second clamping plate apply downward pressure to the ELISA plate from top to bottom, ensuring a stable positioning and holding state during use. This prevents displacement or shaking due to external forces, thus avoiding sample leakage. Furthermore, under the applied downward pressure, the ELISA strip can be easily removed with one hand, eliminating the need for the other hand and improving operational convenience. Attached Figure Description
[0015] Figure 1 A schematic diagram of a preferred embodiment of the positioning stage structure of the enzyme-labeled plate provided by this utility model;
[0016] Figure 2 This is a schematic diagram of the structure of this utility model without the enzyme-labeled plate placed;
[0017] Figure 3 This is a partial cross-sectional view of the through opening in this utility model;
[0018] Figure 4 This is a cross-sectional view of the built-in cavity in this utility model.
[0019] The following are the labels in the diagram: 1. Positioning platform; 2. Fixed abutment column; 3. Through opening; 4. Support bar; 5. Sliding plate; 6. Movable abutment column; 7. First fastening bolt; 8. First rectangular sliding plate; 9. First lower pressure bar; 10. First clamping piece; 11. Second fastening bolt; 12. Second rectangular sliding plate; 13. Second lower pressure bar; 14. Second clamping piece; 15. Third fastening bolt; 16. Internal cavity; 17. Bidirectional threaded rod; 18. Linkage back plate; 19. Pushing piece; 20. Push head; 21. Ball bearing; 22. ELISA plate. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please refer to the following: Figures 1-4 ,in, Figure 1 A schematic diagram of a preferred embodiment of the positioning stage structure of the enzyme-labeled plate provided by this utility model; Figure 2 This is a schematic diagram of the structure of this utility model without the enzyme-labeled plate placed; Figure 3 This is a partial cross-sectional view of the through opening in this utility model; Figure 4This is a cross-sectional schematic diagram of the built-in cavity in this utility model. The positioning stage structure of the ELISA plate includes: a positioning stage 1 and an ELISA plate 22 disposed on top of the positioning stage 1. The ELISA plate 22 can be placed on the positioning stage 1 during use. Four legs are fixedly installed at the bottom of the positioning stage 1 to fix it in a designated position. Two fixed abutment posts 2 are fixedly installed on the top of the positioning stage 1. A sliding plate 5 is slidably installed on the positioning stage 1, and two movable abutment posts 6 are fixedly installed on the side of the sliding plate 5 near the fixed abutment posts 2. The movable abutment posts 6 cooperate with the fixed abutment posts 2 to form a lateral positioning of the ELISA plate 22. An internal cavity 16 is formed in the positioning stage 1, and a bidirectional thread is rotatably installed in the cavity. The rod 17 has one end extending to the outside of the positioning platform 1, and two linkage back plates 18 are threadedly installed on the rod 17. The tops of the two linkage back plates 18 extend above the positioning platform 1 and slide to connect with the top of the positioning platform 1. Pushing pieces 19 are fixedly installed on the tops of the two linkage back plates 18. Pushing heads 20 are fixedly installed on the side of the two pushing pieces 19 that are close to each other. The ends of the four pushing heads 20 are movably embedded with balls 21. The four pushing heads 20 can form a longitudinal positioning of the enzyme label plate 22, which, together with the previous lateral positioning, finally fixes the enzyme label plate 22, facilitating subsequent experimental testing.
[0022] In the above method, in order to position and hold the sliding plate 5 that has slid to the designated position, a through opening 3 is provided on the positioning platform 1. The bottom of the sliding plate 5 extends into the through opening 3. Two support bars 4 are fixedly installed in the through opening 3. Both support bars 4 pass through the sliding plate 5 and are slidably connected to the sliding plate 5. A first fastening bolt 7 is threaded on one side of the sliding plate 5. The end of the first fastening bolt 7 abuts against one of the support bars 4.
[0023] In this method, in order to position the ELISA plate 22 from top to bottom and prevent it from rising along with the ELISA strip when it is removed, a first rectangular slide plate 8 is fixedly installed on the top of the positioning stage 1. A first downward pressure strip 9 is slidably installed on the first rectangular slide plate 8, and a first clamping piece 10 is fixedly installed at the bottom of the first downward pressure strip 9. A second rectangular slide plate 12 is fixedly installed on the top of the sliding plate 5. A second downward pressure strip 13 is slidably installed on the second rectangular slide plate 12, and a second clamping piece 14 is fixedly installed at the bottom of the second downward pressure strip 13. The first clamping piece 10 and the second clamping piece 14 are used to clamp the ELISA plate 22. The ELISA plate 22 applies downward pressure, so that when removing the ELISA strip, it can be easily removed by simply lifting it upwards with one hand without any additional operation. Furthermore, a second fastening bolt 11 is threaded onto the first pressure strip 9, and the end of the second fastening bolt 11 abuts against the first rectangular sliding plate 8. A third fastening bolt 15 is threaded onto the second pressure strip 13, and the end of the third fastening bolt 15 abuts against the second rectangular sliding plate 12. The positioning of the second fastening bolt 11 and the third fastening bolt 15 ensures that the first clamping piece 10 and the second clamping piece 14 can be firmly pressed onto the ELISA plate 22.
[0024] In this method, in order to realize the lateral movement of the sliding plate 5 and the longitudinal movement of the linkage back plate 18, a lateral movement opening is provided on the top of the positioning platform 1. The sliding plate 5 passes through the lateral movement opening and contacts the inner wall of the lateral movement opening. In addition, two longitudinal movement openings are provided on the top of the positioning platform 1. The two linkage back plates 18 pass through the two longitudinal movement openings respectively and contact the inner wall of the corresponding longitudinal movement opening.
[0025] In this method, in order to facilitate the rotation of the bidirectional threaded rod 17, an anti-slip rotating rod is fixedly installed at one end of the bidirectional threaded rod 17 outside the positioning table 1. A protruding plate is fixedly installed on one side of the positioning table 1, and a fourth fastening bolt is threaded on the protruding plate. Its end abuts against the anti-slip rotating rod. By rotating the anti-slip rotating rod, the bidirectional threaded rod 17 can be rotated. Furthermore, the fourth fastening bolt is provided so that when the anti-slip rotating rod is not rotated, it can limit the anti-slip rotating rod and prevent it from rotating on its own.
[0026] The working principle of the positioning stage structure of the enzyme-labeled plate provided by this utility model is as follows:
[0027] Before use, the positioning stage 1 is fixed to the test table with screws to fix its bottom legs.
[0028] When the ELISA plate is to be used, first place it on the positioning stage 1, then tighten the fourth fastening bolt to separate it from the anti-slip rotating rod, and then rotate the anti-slip rotating rod to drive the bidirectional threaded rod 17 to rotate. At this time, the two linkage back plates 18 move towards each other until all four balls 21 are in contact with the ELISA plate 22. Stop rotating the anti-slip rotating rod, and then tighten the fourth fastening bolt again to make it contact the anti-slip rotating rod.
[0029] Then, rotate the first fastening bolt 7 in the opposite direction to separate it from the support bar 4. Then, move the sliding plate 5 towards the fixed abutment post 2. The sliding plate 5 will move horizontally with the movable abutment post 6. When it contacts one side of the enzyme labeling plate 22, the rolling performance of the ball bearing 21 will allow the enzyme labeling plate 22 to move accordingly until the other side of the enzyme labeling plate 22 contacts the fixed abutment post 2. This indicates that the four sides of the enzyme labeling plate 22 have been positioned and held. Then, tighten the first fastening bolt 7 to temporarily fix the sliding plate 5.
[0030] Then, the second fastening bolt 11 and the third fastening bolt 15 are rotated in reverse, causing the first lower pressure strip 9 and the second lower pressure strip 13 to lose their positioning effect and thus automatically descend, eventually bringing the first clamping piece 10 and the second clamping piece 14 into contact with the top of the ELISA plate 22. Then, a downward force is applied to the first clamping piece 10 and the second clamping piece 14, and then the second fastening bolt 11 and the third fastening bolt 15 are tightened again, thereby forming a downward clamping force on the ELISA plate 22, and then subsequent experimental testing can be carried out.
[0031] Compared with related technologies, the positioning stage structure of the enzyme-labeled plate provided by this utility model has the following beneficial effects:
[0032] This invention provides a positioning stage structure for an enzyme-linked immunosorbent assay (ELISA) plate. Through the horizontally movable abutment post 6 and the vertically movable push head 20, ELISA plates 22 of different outer dimensions can be positioned and held. Simultaneously, the first clamping piece 10 and the second clamping piece 14 apply downward pressure to the ELISA plate 22 from top to bottom, ensuring a stable positioning and holding state during use. This prevents displacement or shaking due to external interference, thus avoiding sample leakage. Furthermore, under the applied downward pressure, the ELISA strip can be easily removed with one hand, eliminating the need for the other hand and improving operational convenience.
[0033] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, those skilled in the art who understand the principle of the above utility model can clearly understand the specific details of its power mechanism, power supply system and control system.
[0034] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A positioning stage structure for an ELISA plate, comprising a positioning stage and an ELISA plate disposed on top of the positioning stage, characterized in that, Two fixed abutment columns are fixedly installed on the top of the positioning platform. A sliding plate is slidably installed on the positioning platform. Two movable abutment columns are fixedly installed on the side of the sliding plate near the fixed abutment columns. An internal cavity is opened on the positioning platform. A bidirectional threaded rod is rotatably installed in the internal cavity. One end of the bidirectional threaded rod extends outside the positioning platform, and two linkage back plates are threadedly installed on the bidirectional threaded rod. The tops of the two linkage back plates extend above the positioning platform and are slidably connected to the top of the positioning platform. Push plates are fixedly installed on the tops of the two linkage back plates. Push heads are fixedly installed on the sides of the two push plates that are close to each other. Ball bearings are movably embedded at the ends of the four push heads.
2. The positioning stage structure of the enzyme-labeled plate according to claim 1, characterized in that, The positioning platform has a through opening, and the bottom of the sliding plate extends into the through opening. Two support bars are fixedly installed in the through opening. Both support bars pass through the sliding plate and are slidably connected to the sliding plate. A first fastening bolt is threaded on one side of the sliding plate, and the end of the first fastening bolt abuts against one of the support bars.
3. The positioning stage structure of the enzyme-labeled plate according to claim 1, characterized in that, A first rectangular slide plate is fixedly installed on the top of the positioning platform, a first downward pressure strip is slidably installed on the first rectangular slide plate, and a first clamping piece is fixedly installed at the bottom of the first downward pressure strip. A second rectangular slide plate is fixedly installed on the top of the sliding plate, a second downward pressure strip is slidably installed on the second rectangular slide plate, and a second clamping piece is fixedly installed at the bottom of the second downward pressure strip.
4. The positioning stage structure of the enzyme-labeled plate according to claim 3, characterized in that, The first lower pressure bar is threaded with a second fastening bolt, the end of which abuts against the first rectangular sliding plate. The second lower pressure bar is threaded with a third fastening bolt, the end of which abuts against the second rectangular sliding plate.
5. The positioning stage structure of the enzyme-labeled plate according to claim 2, characterized in that, The top of the positioning platform has a transverse sliding opening, and the sliding plate passes through the transverse sliding opening and contacts the inner wall of the transverse sliding opening.
6. The positioning stage structure of the enzyme-labeled plate according to claim 1, characterized in that, The top of the positioning platform has two longitudinal movement openings, and the two linkage back plates pass through the two longitudinal movement openings respectively and contact the inner wall of the corresponding longitudinal movement opening.
7. The positioning stage structure of the enzyme-labeled plate according to claim 1, characterized in that, An anti-slip rotating rod is fixedly installed at one end of the bidirectional threaded rod outside the positioning platform. A protruding plate is fixedly installed on one side of the positioning platform. A fourth fastening bolt is threaded onto the protruding plate, and the end of the fourth fastening bolt abuts against the anti-slip rotating rod.