Pipettor convenient to operate

Abstract

The utility model discloses a pipettor convenient to operate, which belongs to the technical field of experimental operation appliances and comprises a pipettor body, a pipetting cavity is arranged inside the lower end of the pipettor body, a piston is slidably connected inside the pipetting cavity, the upper end of the piston is fixedly connected with a connecting rod, the upper end of the connecting rod is fixedly connected with a movable block, and the movable block is fixedly connected with the pipettor body. A push handle is fixedly connected to one side of the movable block, a positioning groove is formed in the side, away from the push handle, of the movable block, a first spring is embedded in the inner side wall of the containing groove, a positioning block is fixedly connected to one end of the first spring, a pull rod is fixedly connected to one side of the positioning block, and a groove is formed in the top of the movable block. A second spring is arranged in the groove; through the arrangement of the pipetting cavity, the piston, the connecting rod, the movable block, the push handle, the positioning groove, the first spring and the positioning block, liquid leakage can be avoided during pipetting, through the pull rod and the second spring, liquid can be discharged without manual pressing, manpower is effectively saved, and fatigue is relieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical supplies, and in particular relates to a pipette which is easy to operate. Background Art

[0002] A pipette is a tool for transferring serum from one test tube containing serum to another test tube containing reagents.

[0003] The existing Chinese patent with announcement number CN203170350U discloses a pipette for medical testing, including an outer shell, a suction and discharge rod, and a tip unloading rod. The pipette is characterized in that an anti-slip thread is provided on the outer shell, a large arc-shaped push handle is provided on the rear end of the suction and discharge rod, and a small arc-shaped push handle is provided on the rear end of the tip unloading rod.

[0004] With respect to the above-mentioned related technologies, the inventors found that there are at least the following problems in the technology: during the pipetting process, in order to ensure that the liquid in the pipette does not leak, the push handle needs to be manually positioned to prevent the push handle from shaking, and during long-term work, the staff needs to repeatedly press the push handle to drain the liquid, which easily causes fatigue. Utility Model Content

[0005] The purpose of the utility model is to provide a pipette that is easy to operate, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pipette that is easy to operate, comprising a body, a pipetting chamber is provided inside the lower end of the body, a piston is slidably connected inside the pipetting chamber, the upper end of the piston is fixedly connected to a connecting rod, and the upper end of the connecting rod is fixedly connected to a movable block, the body is located above the pipetting chamber and is provided with a receiving groove, the movable block slides in the receiving groove, a push handle is fixedly connected to one side of the movable block, a positioning groove is provided on the side of the movable block away from the push handle, a first spring is embedded in the inner side wall of the receiving groove, one end of the first spring is fixedly connected to the positioning block, one side of the positioning block is fixedly connected to a pull rod, a groove is provided on the top of the movable block, a second spring is provided in the groove, and the upper end of the second spring abuts against the inner top wall of the receiving groove.

[0007] As a preferred implementation manner, an anti-skid plate is fixedly connected to the top of the device body.

[0008] As a preferred embodiment, a pipette is fixedly connected to the bottom of the body.

[0009] As a preferred embodiment, a scale bar is provided on one side of the body located at the pipetting chamber.

[0010] As a preferred embodiment, a sliding groove is provided on one side of the device body close to the push handle, and the push handle slides in the sliding groove.

[0011] As a preferred embodiment, a side of the positioning block facing the pipetting chamber is provided with an oblique angle.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The pipette suitable for medical examination has a pipette cavity, a piston, a connecting rod, a movable block, a push handle, a positioning groove, a first spring and a positioning block. When aspirating liquid, the pipette body can be held by hand, the thumb is placed on the anti-slip plate, and the index finger or the middle finger pushes the push handle upward, so that the movable block drives the piston upward through the connecting rod, and the liquid is sucked from the pipette into the pipette cavity. When the movable block drives the positioning groove to align with the positioning block, the first spring pushes the positioning block to be inserted into the positioning groove to fix the movable block, so that the piston can be kept stable and liquid leakage can be avoided.

[0014] The pipette suitable for medical examination has a pull rod and a second spring, and when liquid discharge is required, the pull rod only needs to be pulled to move the positioning block out of the positioning groove, and then the second spring pushes the movable block down, so that the piston can discharge the liquid in the liquid transfer chamber without manual pressing, which can effectively save manpower and relieve fatigue. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a side view structural schematic diagram of the utility model;

[0017] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the movable block of the utility model;

[0019] Figure 5 For this utility model Figure 3 Enlarged structural diagram at A in the middle.

[0020] In the figure: 1. body; 2. pipetting chamber; 3. piston; 4. connecting rod; 5. movable block; 6. receiving groove; 7. push handle; 8. positioning groove; 9. first spring; 10. positioning block; 11. pull rod; 12. groove; 13. spring; 14. anti-skid plate; 15. pipette; 16. scale bar; 17. slide groove. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the embodiments.

[0022] The following examples are used to illustrate the present invention, but cannot be used to limit the scope of protection of the present invention. The conditions in the examples can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0023] See also Figure 1-5 The utility model provides a pipette that is easy to operate, including a body 1, a non-slip plate 14 is fixedly connected to the top of the body 1, a pipette 15 is fixedly connected to the bottom of the body 1, a pipette cavity 2 is provided inside the lower end of the body 1, a scale bar 16 is provided on the side of the body 1 located at the pipette cavity 2, a piston 3 is slidably connected inside the pipette cavity 2, a connecting rod 4 is fixedly connected to the upper end of the piston 3, a movable block 5 is fixedly connected to the upper end of the connecting rod 4, a receiving groove 6 is provided on the body 1 above the pipette cavity 2, the movable block 5 slides in the receiving groove 6, a push handle 7 is fixedly connected to one side of the movable block 5, a slide groove 17 is provided on the side of the body 1 close to the push handle 7, the push handle 7 slides in the slide groove 17, and a positioning groove 8 is provided on the side of the movable block 5 away from the push handle 7 A first spring 9 is embedded in the inner wall of the accommodating groove 6, and a positioning block 10 is fixedly connected to one end of the first spring 9. The positioning block 10 is provided with an oblique angle on the side facing the pipetting chamber 2. Through the arrangement of the pipetting chamber 2, the piston 3, the connecting rod 4, the movable block 5, the push handle 7, the positioning groove 8, the first spring 9 and the positioning block 10, when aspirating liquid, the device body 1 can be held by hand, the thumb is placed on the anti-slip plate 14, and the index finger or middle finger pushes the push handle 7 to move up, so that the movable block 5 drives the piston 3 to move up through the connecting rod 4, and the liquid is sucked into the pipette 2 from the pipette 15. When the movable block 5 drives the positioning groove 8 to align with the positioning block 10, the first spring 9 pushes the positioning block 10 to be inserted into the positioning groove 8 to fix the movable block 5, so that the piston 3 can remain stable and liquid leakage can be avoided.

[0024] Among them, a pull rod 11 is fixedly connected to one side of the positioning block 10, a groove 12 is opened on the top of the movable block 5, and a second spring 13 is arranged in the groove 12. The upper end of the second spring 13 abuts against the inner top wall of the accommodating groove 6. Through the arrangement of the pull rod 11 and the second spring 13, when liquid discharge is required, it is only necessary to pull the pull rod 11 to move the positioning block 10 out of the positioning groove 8, and then push the movable block 5 down through the second spring 13, so that the piston 3 can discharge the liquid in the pipetting chamber 2, without manual pressing, which can effectively save manpower and relieve fatigue.

[0025] When the piston 3 is in the liquid-absorbing chamber 2, the piston 3 is moved upward by the index finger or the middle finger, and the movable block 5 is driven by the connecting rod 4 to move the piston 3 upward, and the liquid is sucked into the liquid-absorbing chamber 2 from the pipette 15. When the movable block 5 drives the positioning groove 8 to align with the positioning block 10, the first spring 9 pushes the positioning block 10 to be inserted into the positioning groove 8 to fix the movable block 5, so that the piston 3 can be kept stable to avoid liquid leakage. When the pull rod 11 and the second spring 13 are set, when liquid discharge is needed, it is only necessary to pull the pull rod 11 to move the positioning block 10 out of the positioning groove 8, and then push the movable block 5 down by the second spring 13, so that the piston 3 can discharge the liquid in the liquid-absorbing chamber 2. No manual pressing is required, which can effectively save manpower and relieve fatigue.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A convenient-to-operate pipette, comprising a body (1), characterized in that: A transfer chamber (2) is provided inside the lower end of the device body (1), a piston (3) is slidably connected inside the transfer chamber (2), a connecting rod (4) is fixedly connected to the upper end of the piston (3), a movable block (5) is fixedly connected to the upper end of the connecting rod (4), a receiving groove (6) is provided on the device body (1) above the transfer chamber (2), the movable block (5) slides in the receiving groove (6), a push handle (7) is fixedly connected to one side of the movable block (5), and the movable block (5) is fixedly connected to the upper end of the connecting rod (4). 5) A positioning groove (8) is provided on the side away from the push handle (7), a first spring (9) is embedded in the inner wall of the receiving groove (6), one end of the first spring (9) is fixedly connected to a positioning block (10), one side of the positioning block (10) is fixedly connected to a pull rod (11), a groove (12) is provided on the top of the movable block (5), a second spring (13) is provided in the groove (12), and the upper end of the second spring (13) is in contact with the inner top wall of the receiving groove (6).

2. A convenient-to-operate pipette according to claim 1, characterized in that: An anti-skid plate (14) is fixedly connected to the top of the device body (1).

3. A convenient-to-operate pipette according to claim 1, characterized in that: The bottom of the body (1) is fixedly connected with a liquid suction tube (15).

4. A convenient-to-operate pipette according to claim 1, characterized in that: The body (1) is provided with a scale bar (16) on one side of the liquid transfer chamber (2).

5. A convenient-to-operate pipette according to claim 1, characterized in that: A sliding groove (17) is provided on one side of the device body (1) close to the push handle (7), and the push handle (7) slides in the sliding groove (17).

6. A convenient-to-operate pipette according to claim 1, characterized in that: The side of the positioning block (10) facing the liquid transfer chamber (2) is provided with an oblique angle.

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