CN219150168U

CN219150168U - Micro-straw connecting device convenient for quantification

Info

Publication number: CN219150168U
Application number: CN202320281052.5U
Authority: CN
Inventors: 王婷婷; 王玉芳; 吴燕珍
Original assignee: Quanzhou Medical College
Current assignee: Quanzhou Medical College
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-06-09
Anticipated expiration: 2033-02-22

Abstract

The utility model discloses a convenient quantitative micropipette connecting device, which structurally comprises a connecting device, a suction device and a micropipette, wherein the suction device is movably arranged on the connecting device, the micropipette is fixedly arranged below the connecting device, the connecting device comprises a cavity, a chute, a first rubber plug and a second rubber plug, the first rubber plug is fixedly arranged above the connecting device, the chute and the connecting device are of an integrated structure, and the second rubber plug is fixedly arranged below the connecting device: 1. the liquid in the micropipette can be accurately quantified by moving the movable block up and down; 2. the control is convenient, and the pollution caused by liquid entering the emulsion suction head due to poor hand control and excessive hand loosening can be avoided; 3. a large amount of bubbles are not extruded in the liquid due to excessive extrusion of the emulsion suction head.

Description

Micro-straw connecting device convenient for quantification

Technical Field

The utility model relates to a convenient quantitative micropipette connecting device, and belongs to the field of medical appliances.

Background

The micropipette is mainly applied to quantitative liquid measurement, and is mainly applied to quantitative collection of blood samples in medical clinic.

The current commonly used micropipette using method comprises the following steps: the latex suction head (also called a rubber suction head) is connected, the latex suction head is extruded to produce negative pressure by a micropipette to suck liquid, and the latex suction head is extruded to discharge the liquid.

The prior art discloses the application number: a clinical laboratory blood collection tube of CN202220837178.1 comprises a main body tube, an upper cover body detachably arranged at the upper part of the main body tube and a lower cover body detachably arranged at the lower part of the main body tube; the lower end of the main body pipe is provided with a bulge, and the lower part of the bulge is internally provided with a concave cavity communicated with the outside; the main part intraductal suction vessel that is fixed with one end and cavity intercommunication, be equipped with the negative pressure portion that is used for producing the negative pressure on the suction vessel, but this prior art has following problem: 1. the latex suction head is not well controlled, the latex suction head is too loose to be opened by hands, and the latex suction head releases too much to cause the blood to enter the latex suction head to pollute; 2. if accurate quantification is needed, excessive blood is sucked, the required scale is adjusted back, and the residual blood on the tube wall causes inaccurate sampling; 3. if the latex suction head is not well controlled in the blood releasing process, a large amount of bubbles can be squeezed out, or diluent is sucked into the latex suction head to cause pollution.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide a convenient quantitative micropipette connecting device so as to solve the problems that emulsion suction heads are not well controlled, the emulsion suction heads are too loose to release, and the emulsion suction heads release too much to cause the blood to enter the emulsion suction heads to pollute; if accurate quantification is needed, excessive blood is sucked, the required scale is adjusted back, and the residual blood on the tube wall causes inaccurate sampling; if the latex suction head is not well controlled in the blood releasing process, a large amount of bubbles can be squeezed out, or the dilution liquid is sucked into the latex suction head to cause pollution.

In order to achieve the above object, the present utility model is realized by the following technical scheme: the utility model provides a convenient quantitative micropipette connecting device, its structure includes connecting device, suction means, micropipette, suction means movable mounting is on connecting device, micropipette fixed mounting is in the connecting device below, connecting device is including cavity, spout, first rubber buffer, second rubber buffer, first rubber buffer fixed mounting is in the connecting device top, spout and connecting device are integrated structure, second rubber buffer fixed mounting is in the connecting device below, cavity and connecting device are integrated structure, suction means is including movable block, linking bridge, rubber piston, the movable block laminating is on connecting device surface and fixed mounting on the linking bridge, linking bridge movable mounting is on the spout, rubber piston fixed mounting is on the linking bridge, rubber piston movable mounting is in the cavity and surface laminating mutually with connecting device internal surface, micropipette fixed mounting is in the second rubber buffer below.

Further, the micro-suction pipe penetrates through the second rubber plug and enters the cavity.

Further, the rubber piston is arranged above the micropipette.

Further, the micropipette is provided with a scale.

Further, the movable block is arranged on the side face of the chute.

Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that: 1. the liquid in the micropipette can be accurately quantified by moving the movable block up and down; 2. the control is convenient, and the pollution caused by liquid entering the emulsion suction head due to poor hand control and excessive hand loosening can be avoided; 3. a large amount of bubbles are not extruded in the liquid due to excessive extrusion of the emulsion suction head.

Drawings

Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:

FIG. 1 is a schematic view of a micropipette attachment device of the present utility model for convenient dosing;

FIG. 2 is a schematic cross-sectional view of a micropipette attachment device of the present utility model for convenient dosing.

In the figure: the device comprises a connecting device-1, a suction device-2, a micropipette-3, a cavity-101, a chute-102, a first rubber plug-103, a second rubber plug-104, a movable block-201, a connecting bracket-202 and a rubber piston-203.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

Referring to fig. 1 and 2, the present utility model provides a technical solution for a micropipette connection device with convenient quantification: the structure of the suction device comprises a connecting device 1, a suction device 2 and a micropipette 3, wherein the suction device 2 is movably arranged on the connecting device 1, the micropipette 3 is fixedly arranged below the connecting device 1, the connecting device 1 comprises a cavity 101, a sliding groove 102, a first rubber plug 103 and a second rubber plug 104, the first rubber plug 103 is fixedly arranged above the connecting device 1, the sliding groove 102 and the connecting device 1 are of an integrated structure, the second rubber plug 104 is fixedly arranged below the connecting device 1, the cavity 101 and the connecting device 1 are of an integrated structure, the suction device 2 comprises a movable block 201, a connecting support 202 and a rubber piston 203, the movable block 201 is attached to the outer surface of the connecting device 1 and is fixedly arranged on the connecting support 202, the connecting support 202 is movably arranged on the sliding groove 102, the rubber piston 203 is fixedly arranged on the connecting support 202, the rubber piston 203 is movably arranged in the cavity 101, the outer surface is attached to the inner surface of the connecting device 1, and the micropipette 3 is fixedly attached to the lower part of the second rubber plug 104.

More preferably, the micropipette 3 is inserted into the cavity 101 through the second rubber plug 104, the rubber piston 203 is disposed above the micropipette 3, the micropipette 3 is provided with scales, and the movable block 201 is disposed on the side of the chute 102.

Examples (example)

Referring to fig. 1-2, when in use, the second rubber plug 104 at the bottom of the connecting device 1 is connected with the micropipette 3, the movable block 201 is used to push the rubber piston 203 to the bottom to discharge air, then the micropipette 3 is driven by the movable block 201 to go deep under the liquid surface, the connecting bracket 202 is driven by the movable block 201 to move the rubber piston 203 along the cavity 101 to the top, so that the liquid can be sucked into the micropipette 3, and meanwhile, the micropipette 3 is provided with scales, and when the scales are needed, the movable block 201 is used to push the rubber piston 203 to the bottom, so that the liquid can be blown out and released.

The utility model solves the problems that 1, the latex suction head is not well controlled, the latex suction head is too much released by hands, and the latex suction head can cause pollution when blood enters the latex suction head; 2. if accurate quantification is needed, excessive blood is sucked, the required scale is adjusted back, and the residual blood on the tube wall causes inaccurate sampling; 3. if the latex suction head is not well controlled in the blood releasing process, a large amount of bubbles can be extruded, or the diluting liquid is sucked into the latex suction head to cause pollution, the utility model has the following beneficial effects compared with the prior art through the mutual combination of the components: 1. the liquid in the micropipette 3 can be accurately quantified by moving the movable block 201 up and down; 2. the control is convenient, and the pollution caused by liquid entering the emulsion suction head due to poor hand control and excessive hand loosening can be avoided; 3. a large amount of bubbles are not extruded in the liquid due to excessive extrusion of the emulsion suction head.

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. A convenient quantitative micropipette connecting device, its characterized in that: the structure of the device comprises a connecting device (1), a suction device (2) and a micropipette (3), wherein the suction device (2) is movably arranged on the connecting device (1), the micropipette (3) is fixedly arranged below the connecting device (1), the connecting device (1) comprises a cavity (101), a sliding groove (102), a first rubber plug (103) and a second rubber plug (104), the first rubber plug (103) is fixedly arranged above the connecting device (1), the sliding groove (102) and the connecting device (1) are of an integrated structure, the second rubber plug (104) is fixedly arranged below the connecting device (1), the cavity (101) and the connecting device (1) are of an integrated structure, the suction device (2) comprises a movable block (201), a connecting bracket (202) and a rubber piston (203), the movable block (201) is attached to the outer surface of the connecting device (1) and is fixedly arranged on the connecting bracket (202), the connecting bracket (202) is movably arranged on the sliding groove (102), the rubber piston (203) is fixedly arranged on the connecting bracket (203) and is fixedly arranged on the inner surface of the connecting device (101) and is attached to the inner surface of the connecting device (101), the micropipette (3) is fixedly arranged below the second rubber plug (104).

2. The micropipette attachment device of claim 1, wherein: the micro-suction pipe (3) penetrates through the second rubber plug (104) and enters the cavity (101).

3. The micropipette attachment device of claim 1, wherein: the rubber piston (203) is arranged above the micropipette (3).

4. The micropipette attachment device of claim 1, wherein: the micro-suction tube (3) is provided with a scale.

5. The micropipette attachment device of claim 1, wherein: the movable block (201) is arranged on the side face of the sliding groove (102).