Anti-blocking and dredging auxiliary device for pipette tip

Abstract

The utility model discloses a pipette tip anti -blocking dredging auxiliary device, including handheld main part, the outside installation of handheld main part one end has antiskid rubber cover, the outside installation of handheld main part has power module, control button and water pump, the inside installation of handheld main part has control module and micro motor, control module is connected with power module, control button, micro motor and water pump electricity respectively, power module is connected with control button, micro motor and water pump electricity respectively, the output of micro motor is connected with the lead screw through the shaft coupling, the outside screw thread connection of lead screw has the moving link, the upper and lower both ends of moving link all are penetrated and are limited the rod, the inner wall connection of one end of limiting rod and handheld main part. This pipette tip anti -blocking dredging auxiliary device, adopts the conical structure design to dredging needle, is equipped with nanometer antiseize coating on the surface, is convenient for inserting the gun head and reduces the adhesion of the blockage, and the dredging effect is good.

Description

Technical Field

[0001] This utility model relates to the technical field of laboratory equipment auxiliary devices, specifically a pipette tip anti-clogging and unblocking auxiliary device. Background Technology

[0002] Pipettes are commonly used micro-liquid transfer tools in biological and chemical laboratories. They are used to aspirate and release liquids through matching pipette tips. During experiments, when transferring liquids containing precipitates, particles, or high viscosity, the tip of the pipette is prone to clogging, which can prevent the liquid from being transferred normally and affect the progress of the experiment. Current methods for dealing with pipette tip blockage mainly involve manual unblocking, such as manually puncturing the blockage with a fine needle or attempting to expel the blockage by squeezing the side wall of the pipette tip. However, manual unblocking has several drawbacks: First, the size of the fine needle is difficult to precisely match with pipette tips of different specifications, which can easily scratch the inner wall of the tip, leading to a decrease in the sealing performance of the tip and affecting the accuracy of subsequent pipetting. Second, it is difficult to control the force of manual operation; excessive force can easily cause the tip to break, while insufficient force will not effectively unblock the blockage. Third, the unblocking efficiency is low, especially when a large number of pipette tips are blocked, as manual processing is time-consuming and labor-intensive. Therefore, we propose a pipette tip anti-clogging and unblocking auxiliary device to solve the above-mentioned problems. Utility Model Content

[0003] The purpose of this invention is to provide an auxiliary device for preventing and clearing blockages in pipette tips, in order to solve the problems mentioned in the background art, such as low clearing efficiency and easy damage to pipette tips when they are blocked.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a pipette tip anti-clogging and unblocking auxiliary device, comprising a handheld body, an anti-slip rubber sleeve installed on the outside of one end of the handheld body, a power module, a control button and a water pump installed on the outside of the handheld body, and a control module and a micro motor installed inside the handheld body. The control module is electrically connected to the power module, the control button, the micro motor and the water pump respectively, and the power module is electrically connected to the control button, the micro motor and the water pump respectively. The output end of the micro motor is connected to a lead screw via a coupling. A moving rod is threaded onto the outer side of the lead screw. Limiting rods pass through both the upper and lower ends of the moving rod. One end of the limiting rod is connected to the inner wall of the handheld body. The end of the movable rod extending out of the hand-held body is threadedly connected to a needle seat, and a dredging needle is bolted to one side of the needle seat. A through hole is provided on the side wall of the dredging needle. A mounting bracket is installed at one end of the handheld body, a fixing ring is connected to one end of the mounting bracket, a rotating shaft is rotatably connected to the inner wall of the fixing ring, a positioning plate is installed on the outer side of the rotating shaft, and a spiral spring is connected to the end of the rotating shaft connected to the fixing ring. A water tank is installed on the outer wall of the handheld body. The water tank is connected to the inlet of the water pump. A hose is connected to the output of the water pump. One end of the hose is threaded to the needle seat.

[0005] Preferably, the movable rod can slide on the limiting rod, and the limiting rod and the lead screw are distributed parallel to each other.

[0006] Preferably, both the needle holder and the unblocking needle have hollow interiors, and the needle holder is connected to both the unblocking needle and the flexible tube.

[0007] Preferably, the unblocking needle is made of medical-grade stainless steel and has a nano-anti-stick coating on its surface. The diameter of the unblocking needle gradually decreases in the direction away from the needle hub.

[0008] Preferably, the positioning plate has a smooth arc-shaped structure, the positioning plate is distributed at equal angles with respect to the transverse center line of the fixing ring, and the positioning plate and the fixing ring form a rotating structure through a rotating shaft.

[0009] Preferably, the transverse centerline of the fixing ring coincides with the transverse centerline of the unclogging needle, and the outer diameter of the fixing ring is larger than the maximum outer diameter of the unclogging needle.

[0010] Compared with the prior art, the beneficial effects of this utility model are: (1) The pipette tip anti-clogging and unblocking auxiliary device drives the unblocking needle to perform reciprocating extension and retraction through the drive component to achieve mechanized unblocking. Compared with manual unblocking, the efficiency is significantly improved, and the force is controllable to avoid damage to the inner wall of the pipette tip and ensure the accuracy of subsequent pipetting. (2) The pipette tip anti-clogging and unblocking auxiliary device has a conical structure design for the unblocking needle, and the surface is coated with a nano anti-stick coating, which makes it easy to insert into the pipette tip and reduces the adhesion of blockages, resulting in a good unblocking effect; (3) The anti-clogging and unblocking auxiliary device for the pipette tip has a hollow design inside the unblocking needle. When the unblocking needle is inserted into the pipette tip, water is sprayed out from the through hole of the unblocking needle to flush and unblock the inside of the pipette tip, thereby improving the unblocking effect and increasing the cleanliness of the inside of the pipette tip. Attached Figure Description

[0011] Figure 1 This is a cross-sectional structural diagram of the present invention; Figure 2 This is a schematic diagram of the overall structure of this utility model; Figure 3 This is a schematic cross-sectional view of the needle seat structure of this utility model; Figure 4 This is a schematic diagram of the fixing ring structure of this utility model; Figure 5 This is a schematic diagram of the positioning plate structure of this utility model.

[0012] In the diagram: 1. Handheld main body; 2. Anti-slip rubber sleeve; 3. Power module; 4. Control button; 5. Control module; 6. Micro motor; 7. Lead screw; 8. Limiting rod; 9. Moving rod; 10. Needle seat; 11. Unclogging needle; 12. Through hole; 13. Mounting bracket; 14. Fixing ring; 15. Rotating shaft; 16. Positioning plate; 17. Scroll spring; 18. Water tank; 19. Water pump; 20. Hose. Detailed Implementation

[0013] 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.

[0014] Please see Figures 1-5 This utility model provides the following technical solution: a pipette tip anti-clogging and unblocking auxiliary device, including a handheld body 1, an anti-slip rubber sleeve 2 installed on the outside of one end of the handheld body 1, a power module 3, a control button 4 and a water pump 19 installed on the outside of the handheld body 1, a control module 5 and a micro motor 6 installed inside the handheld body 1, the control module 5 being electrically connected to the power module 3, the control button 4, the micro motor 6 and the water pump 19 respectively, the power module 3 being electrically connected to the control button 4, the micro motor 6 and the water pump 19 respectively; the output end of the micro motor 6 is connected to a lead screw 7 through a coupling, a moving rod 9 is threaded to the outside of the lead screw 7, both the upper and lower ends of the moving rod 9 are penetrated by limit rods 8, one end of the limit rod 8 is connected to the inner wall of the handheld body 1; Furthermore, the movable rod 9 can slide on the limiting rod 8. The limiting rod 8 and the lead screw 7 are distributed parallel to each other, which can limit the movement of the movable rod 9 and ensure the stable movement of the movable rod 9. The end of the moving rod 9 extending out of the handheld body 1 is threadedly connected to a needle seat 10. A drain needle 11 is bolted to one side of the needle seat 10. A through hole 12 is opened on the side wall of the drain needle 11. A water tank 18 is installed on the outer wall of the handheld body 1. The water tank 18 is connected to the water inlet of the water pump 19. The output end of the water pump 19 is connected to a hose 20. One end of the hose 20 is threadedly connected to the needle seat 10. Furthermore, both the needle holder 10 and the unblocking needle 11 have hollow interiors. The needle holder 10 is connected to the unblocking needle 11 and the hose 20, respectively, so that water can be smoothly delivered into the needle holder 10 and the unblocking needle 11 to achieve water delivery and rinsing of the nozzle. Furthermore, the unblocking needle 11 is made of medical-grade stainless steel and has a nano-anti-stick coating on its surface. The diameter of the unblocking needle 11 gradually decreases in the direction away from the needle seat 10, which makes it easier for the unblocking needle 11 to be inserted into the gun head for unblocking and avoids the unblocking needle 11 from damaging the inner wall of the gun head. A mounting bracket 13 is installed at one end of the handheld body 1. A fixing ring 14 is connected to one end of the mounting bracket 13. A rotating shaft 15 is rotatably connected to the inner wall of the fixing ring 14. A positioning plate 16 is installed on the outer side of the rotating shaft 15. A spiral spring 17 is connected to the connecting end of the rotating shaft 15 and the fixing ring 14. Furthermore, the positioning plate 16 has a smooth arc-shaped structure. The positioning plate 16 is distributed at equal angles with respect to the transverse center line of the fixing ring 14. The positioning plate 16 and the fixing ring 14 form a rotating structure through the rotating shaft 15, and the positioning plate 16 is used to position the gun head. Furthermore, the transverse center line of the fixing ring 14 coincides with the transverse center line of the unblocking needle 11, and the outer diameter of the fixing ring 14 is larger than the maximum outer diameter of the unblocking needle 11, which can ensure the smooth movement of the unblocking needle 11 and its smooth insertion into the gun head. Specifically, when using this pipette tip anti-clogging and unblocking auxiliary device, select an unblocking needle 11 that matches the specifications of the clogged pipette tip. Connect the needle holder 10 threadedly to the end of the moving rod 9 to adapt the unblocking needle 11. Then, thread one end of the tubing 20 onto the needle holder 10 to connect it. Align the tip of the pipette tip with the tip of the unblocking needle 11. At this point, the tip of the pipette tip passes between the positioning plates 16. Adapting to the external dimensions of the pipette tip, the positioning plates 16 rotate via the rotating shaft 15, driving the spiral spring 17 to rotate and store force. Utilizing the elasticity of the spiral spring 17, the positioning plates 16 position the pipette tip, ensuring that the pipette tip and the unblocking needle 11 are at the same level. Hold the positioning plate 16 with one hand to fix the pipette tip, and hold the anti-slip rubber sleeve 2 of the handheld body 1 with the other hand. Press the control button 4, and the control module 5 controls the micro... When motor 6 starts, the micro motor 6 rotates forward, thereby controlling the lead screw 7 to rotate forward. The lead screw 7 drives the threaded moving rod 9 to move. At this time, the moving rod 9 slides on the limit rod 8 to ensure the stable movement of the moving rod 9, which in turn drives the needle seat 10 to move the unblocking needle 11 towards the gun head, pushing the gun head to unclog. At the same time, the water pump 19 is connected to the power supply, and the water in the water tank 18 is delivered to the needle seat 10, then enters the unblocking needle 11, and finally sprays out from the through hole 12 to flush and unclog the inside of the gun head. After unblocking, the micro motor 6 is controlled to reverse, thereby controlling the lead screw 7 to reverse, which in turn drives the moving rod 9 to move the needle seat 10 and the unblocking needle 11 in the opposite direction, removing the unblocking needle 11 from the gun head. The device is then turned off, and the gun head is removed. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0015] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pipette tip anti-clogging and unblocking auxiliary device, comprising a handheld body (1), characterized in that: The handheld body (1) is equipped with an anti-slip rubber sleeve (2) on one end. The handheld body (1) is equipped with a power module (3), a control button (4) and a water pump (19) on the outside. The handheld body (1) is equipped with a control module (5) and a micro motor (6) inside. The control module (5) is electrically connected to the power module (3), the control button (4), the micro motor (6) and the water pump (19) respectively. The power module (3) is electrically connected to the control button (4), the micro motor (6) and the water pump (19) respectively. The output end of the micro motor (6) is connected to a lead screw (7) via a coupling. A moving rod (9) is threaded onto the outer side of the lead screw (7). Both the upper and lower ends of the moving rod (9) are connected to a limit rod (8). One end of the limit rod (8) is connected to the inner wall of the handheld body (1). The movable rod (9) is threaded to a needle seat (10) at one end extending out of the handheld body (1). A dredging needle (11) is bolted to one side of the needle seat (10). A through hole (12) is provided on the side wall of the dredging needle (11). One end of the handheld body (1) is equipped with a mounting bracket (13), one end of the mounting bracket (13) is connected to a fixing ring (14), a rotating shaft (15) is rotatably connected to the inner wall of the fixing ring (14), a positioning plate (16) is installed on the outer side of the rotating shaft (15), and a spiral spring (17) is connected to the connecting end of the rotating shaft (15) and the fixing ring (14). A water tank (18) is installed on the outer wall of the handheld body (1). The water tank (18) is connected to the water inlet of the water pump (19). The output end of the water pump (19) is connected to a hose (20). One end of the hose (20) is threadedly connected to the needle seat (10).

2. The pipette tip anti-clogging and unblocking auxiliary device according to claim 1, characterized in that: The movable rod (9) can slide on the limiting rod (8), and the limiting rod (8) and the lead screw (7) are distributed parallel to each other.

3. The pipette tip anti-clogging and unblocking auxiliary device according to claim 1, characterized in that: The needle seat (10) and the unblocking needle (11) are both hollow structures. The needle seat (10) is connected to the unblocking needle (11) and the hose (20) respectively.

4. The pipette tip anti-clogging and unblocking auxiliary device according to claim 1, characterized in that: The unblocking needle (11) is made of medical stainless steel and has a nano anti-stick coating on its surface. The diameter of the unblocking needle (11) gradually decreases in the direction away from the needle seat (10).

5. The pipette tip anti-clogging and unblocking auxiliary device according to claim 1, characterized in that: The positioning plate (16) is a smooth arc-shaped structure. The positioning plate (16) is distributed at equal angles with respect to the transverse center line of the fixing ring (14). The positioning plate (16) and the fixing ring (14) form a rotating structure through the rotating shaft (15).

6. The pipette tip anti-clogging and unblocking auxiliary device according to claim 1, characterized in that: The transverse centerline of the fixing ring (14) coincides with the transverse centerline of the unblocking needle (11), and the outer diameter of the fixing ring (14) is greater than the maximum outer diameter of the unblocking needle (11).

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