Pipette

Abstract

The utility model relates to the technical field of inspection equipment, in particular to a transfer pipette, which has the characteristic of improving practicability and comprises a transfer pipette and a plurality of telescopic plates, a sealing device is arranged at the upper part of the transfer pipette, a fixing ring is arranged at the lower part of the transfer pipette, sliding blocks are respectively arranged on two sides of the fixing ring, a fixing pipe is arranged among the telescopic plates, and the telescopic plates are arranged on the fixing pipe. A top plate is arranged on the upper portion of the fixing pipe, a plurality of springs are arranged on the lower portion of the top plate, a sliding pipe is arranged on the lower portions of the springs, a plurality of sliding grooves are formed in the sliding pipe, the sliding grooves and the sliding blocks are arranged in a sliding mode, through grooves are formed in the two sides of the top plate respectively, and the through grooves and the sliding blocks are arranged in a penetrating mode. A through hole is formed in the middle of the bottom plate and penetrates through the pipette.

Description

Technical Field

[0001] The utility model relates to the technical field of testing equipment, in particular to a pipette. Background Art

[0002] As we all know, the laboratory department is a bridge between clinical medicine and basic medicine, including branch disciplines such as clinical chemistry, clinical microbiology, clinical immunology, hematology, fluidology, and blood transfusion. During their work, staff need to use pipettes to extract liquids to be tested.

[0003] In real life, the staff needs to manually hold the long pipette, keep the lower part of the pipette stably below the liquid level of the flask or bottle containing the liquid, and as the liquid level decreases, the staff needs to steadily move the pipette down. During the entire operation process, the staff needs to keep the arm muscles tense at all times. After working for a long time, the arms are easily fatigued, and it is inevitable that the pipette will shake and collide with the flask or bottle containing the liquid and be damaged. Common pipettes do not have a support device to relieve the fatigue of the staff's arms, so the practicality is not very good. Secondly, when the staff uses the ear bulb to absorb the liquid and pulls out the ear bulb, the fingers need to quickly and accurately block the upper tube mouth of the pipette. When the staff works for a long time and their hands become tired, the time interval when the fingers block the tube mouth of the pipette is long, which can easily cause part of the liquid in the pipette to flow back, resulting in certain errors. Therefore, the practicality is not very good and there is room for improvement. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the utility model provides a pipette having the characteristic of improving practicality.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a pipette, comprising a pipette and several telescopic plates, wherein a sealing device is provided at the upper portion of the pipette, a fixing ring is provided at the lower portion of the pipette, sliders are provided on both sides of the fixing ring, a fixed tube is provided between the several telescopic plates, a top plate is provided at the upper portion of the fixed tube, several springs are provided at the lower portion of the top plate, a sliding tube is provided at the lower portion of the several springs, several sliding grooves are provided inside the sliding tube, and are all slidably arranged with the slider, through grooves are provided on both sides of the top plate, and are penetrated by the slider, a bottom plate is provided at the lower portion of the fixed tube, a through hole is provided in the middle portion of the bottom plate, and is penetrated by the pipette.

[0008] Furthermore, the sealing device includes a shell, a sealing gasket is slidably connected to the interior of the shell, a sealing plate is provided on the left side of the sealing gasket, and a push rod is provided on the left side of the sealing plate.

[0009] Furthermore, the area of ​​the sealing gasket is larger than the cross-sectional area of ​​the pipette, and the shell is made of a transparent material.

[0010] Furthermore, the inner wall of the fixing ring is in contact with the outer wall of the sliding tube, and the outer wall of the sliding tube is in contact with the inner wall of the fixing tube.

[0011] Preferably, one end of each of the telescopic plates is provided with an adjusting bolt, and the lower portion of each of the telescopic plates is provided with an anti-slip pad.

[0012] Preferably, a space is provided between the pipette and the plurality of springs.

[0013] (3) Beneficial effects

[0014] Compared with the prior art, the present invention provides a pipette with the following beneficial effects:

[0015] The pipette is inserted into the fixed tube and the fixed ring is installed in the sliding tube, so that the sliding tube, the spring and the fixed tube cooperate to support the pipette, so that the staff does not need to hold the pipette in the air with their hands. They only need to press the pipette downward to control the lower nozzle of the pipette to be below the liquid level at all times, thereby alleviating arm fatigue and preventing the pipette from shaking due to arm fatigue and colliding with the flask or bottle body containing the liquid and being damaged. Secondly, when the liquid is extracted, it is only necessary to push the push rod to drive the sealing plate and the sealing gasket to move into the shell to block the nozzle of the pipette, so as to seal the pipette. There is no need to quickly and accurately block the upper nozzle of the pipette with fingers when pulling out the ear bulb. There is no time interval generated during the sealing work, so there is no error, thereby improving practicality to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0017] Figure 2 It is a structural diagram of the utility model;

[0018] Figure 3 It is a three-dimensional schematic diagram of the cooperation of the pipette, fixing ring and housing of the utility model;

[0019] Figure 4 This is an enlarged structural diagram of the fixed tube, spring, and sliding tube of the present invention;

[0020] Figure 5 For this utility model Figure 1A schematic diagram of the structure of the local enlargement shown in FIG;

[0021] Figure 6 For this utility model Figure 2 A schematic diagram of the structure of the local enlargement of point B shown in FIG;

[0022] Figure 7 For this utility model Figure 2 A schematic diagram of the structure of the local enlargement of point C is shown in FIG.

[0023] In the figure: 1. Pipette; 2. Telescopic plate; 3. Through hole; 4. Fixed ring; 5. Slider; 6. Fixed tube; 7. Top plate; 8. Spring; 9. Sliding tube; 10. Slide groove; 11. Through groove; 12. Bottom plate; 13. Housing; 14. Sealing gasket; 15. Sealing plate; 16. Push rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-7The utility model provides a pipette, comprising a pipette 1 and several telescopic plates 2. The pipette 1 is used to absorb the test liquid. A sealing device is provided on the upper part of the pipette 1. The sealing device comprises a shell 13. A sealing gasket 14 is slidably connected to the interior of the shell 13. A sealing plate 15 is provided on the left side of the sealing gasket 14. A push rod 16 is provided on the left side of the sealing plate 15. When the liquid in the pipette 1 is extracted, the staff only needs to push the push rod 16 to drive the sealing plate 15 and the sealing gasket 14 to slide in the shell 13. When one end of the sealing gasket 14 rests on the inner wall of one side of the shell 13 and no longer moves, the sealing gasket 14 seals the pipette 1, and the medical staff no longer need to quickly block the pipette 1 with their fingers. At the top of the pipe opening, the area of ​​the sealing gasket 14 is larger than the cross-sectional area of ​​the pipette 1, so that the sealing gasket 14 can cover the pipette 1. The shell 13 is made of a transparent material, which is convenient for viewing the moving position of the sealing gasket 14. A fixing ring 4 is provided at the lower part of the pipette 1, and sliders 5 are provided on both sides of the fixing ring 4. A fixing tube 6 is provided between the several telescopic plates 2. An adjusting bolt is provided at one end of the several telescopic plates 2. By loosening the adjusting bolt, the length of the telescopic plate 2 can be adjusted, and then the distance from the lower part of the fixing tube 6 to the desktop can be adjusted. Then, flasks or bottles containing liquids of different heights can be placed under the fixed tube 6. The lower parts of the several telescopic plates 2 are provided with anti-slip pads to improve the distance between the telescopic plate 2 and the desktop. Friction, improve stability, the upper part of the fixed tube 6 is provided with a top plate 7, the lower part of the top plate 7 is provided with several springs 8, the lower part of the several springs 8 is provided with a slide tube 9, the interior of the slide tube 9 is provided with several slide grooves 10, and they are all set to slide with the slider 5. Insert the pipette 1 into the fixed tube 6, so that the sliders 5 on both sides of the pipette 1 slide into the slide grooves 10 of the slide tube 9. At this time, the fixed tube 6 cooperates with the slide tube 9 to support the pipette 1. The inner wall of the fixed ring 4 and the outer wall of the slide tube 9 fit together to improve the stability between the two. The outer wall of the slide tube 9 fits together with the inner wall of the fixed tube 6 to improve the stability between the two. Through grooves 11 are respectively provided on both sides of the top plate 7, and are set through with the slider 5. The two sides of the fixed ring 4 The side slider 5 passes through the through groove 11 of the top plate 7 and enters the fixed tube 6. The lower part of the fixed tube 6 is provided with a bottom plate 12, and the middle part of the bottom plate 12 is provided with a through hole 3, and is arranged through the pipette 1. The lower part of the pipette 1 passes through the through hole 3 of the bottom plate 12 and enters the liquid in the flask or bottle below. As the liquid decreases, the staff can grasp the side wall of the pipette 1 and press downward to drive the slide tube 9 to move downward in the fixed tube 6. At this time, the lower part of the pipette 1 continues to move into the depth of the liquid, so that the staff does not need to hold the pipette 1 by hand and stabilize it in the air. A gap is provided between the pipette 1 and several springs 8 to prevent the pipette 1 from rubbing against the springs 8 when moving.

[0026] To sum up, when using the pipette, the staff loosens the adjusting bolt according to the height of the flask or bottle containing the liquid, adjusts the extended length of the telescopic plate 2, adjusts the distance between the lower part of the fixed tube 6 and the flask or bottle containing the liquid below, and then tightens the adjusting bolt to fix the telescopic plate 2. The staff passes one end of the pipette 1 through the top plate 7 of the fixed tube 6, and makes the sliders 5 on both sides of the fixed ring 4 pass through the through grooves 11 and enter the fixed tube 6. When the fixed ring 4 enters the slide tube 9 and the sliders 5 enter the slide grooves 10 of the slide tube 9, they move downward. When the lower part of the fixed ring 4 contacts the bottom of the slide tube 9, the pipette 1 is supported by the slide tube 9. At this time, the lower part of the pipette 1 passes through the through hole 3 of the bottom plate 12 of the fixed tube 6 and enters the liquid in the flask or bottle containing the liquid. , then insert the ear bulb into the upper part of the pipette 1 to perform the liquid aspiration work. As the liquid inside the flask or bottle containing the liquid decreases, the staff can press the pipette 1 downward so that the lower tube mouth of the pipette 1 continues to extend into a certain depth of the liquid. After the liquid in the pipette 1 is extracted, the staff pushes the push rod 16 to drive the sealing plate 15 and the sealing gasket 14 to slide in the shell 13. When one end of the sealing gasket 14 rests on the inner wall of one side of the shell 13 and no longer moves, the sealing gasket 14 seals the pipette 1. Then the pipette 1 is pulled out of the fixed tube 6 and moved to the designated test tube containing the liquid. The push rod 16 is pulled to drive the sealing plate 15 and the sealing gasket 14 to move to the left part of the shell 13. After the pipette 1 is no longer sealed, the liquid in the pipette 1 flows into the test tube.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipette comprising a pipette (1) and a plurality of telescopic plates (2), characterized in that: The upper part of the pipette (1) is provided with a sealing device, the lower part of the pipette (1) is provided with a fixing ring (4), and sliders (5) are respectively provided on both sides of the fixing ring (4). A fixing tube (6) is provided between the plurality of telescopic plates (2), the upper part of the fixing tube (6) is provided with a top plate (7), the lower part of the top plate (7) is provided with a plurality of springs (8), and the lower part of the plurality of springs (8) is provided with a sliding tube (9), and the interior of the sliding tube (9) is provided with a plurality of sliding grooves (10), and all of them are slidably arranged with the slider (5), and through grooves (11) are respectively provided on both sides of the top plate (7), and are arranged to penetrate the slider (5), and the lower part of the fixing tube (6) is provided with a bottom plate (12), and a through hole (3) is provided in the middle of the bottom plate (12), and is arranged to penetrate the pipette (1).

2. A pipette according to claim 1, characterized in that: The sealing device comprises a shell (13), a sealing gasket (14) is slidably connected to the interior of the shell (13), a sealing plate (15) is provided on the left side of the sealing gasket (14), and a push rod (16) is provided on the left side of the sealing plate (15).

3. A pipette according to claim 2, characterized in that: The area of ​​the sealing gasket (14) is larger than the cross-sectional area of ​​the pipette (1), and the housing (13) is made of a transparent material.

4. A pipette according to claim 3, characterized in that: The inner wall of the fixed ring (4) and the outer wall of the sliding tube (9) are in contact with each other, and the outer wall of the sliding tube (9) and the inner wall of the fixed tube (6) are in contact with each other.

5. A pipette according to claim 4, characterized in that: One end of each of the telescopic plates (2) is provided with an adjusting bolt, and the lower portion of each of the telescopic plates (2) is provided with an anti-slip pad.

6. A pipette according to claim 5, characterized in that: A gap is provided between the pipette (1) and the plurality of springs (8).

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