CN215004462U

CN215004462U - Small-capacity quantitative dripping and sucking pipe

Info

Publication number: CN215004462U
Application number: CN202120279787.5U
Authority: CN
Inventors: 李筱健; 齐青榕
Original assignee: Xiamen Huichuan Industry And Trade Co ltd
Current assignee: Xiamen Huichuan Industry And Trade Co ltd
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2021-12-03
Anticipated expiration: 2031-02-01

Abstract

The utility model provides a small-capacity quantitative drip tube, which comprises a drip tube, a hollow sleeve, a capillary tube and a connecting component for connecting the drip tube, the sleeve and the capillary tube; the connecting assembly is composed of a supporting plate which is arranged in the sleeve and is close to the axial center of the sleeve for connecting the dropper and two ribs which are symmetrically arranged below the supporting plate and are used for connecting the capillary tube. The utility model discloses a connection that burette, pipe box and capillary were realized to the ration pipette passes through coupling assembling, and wherein coupling assembling only comprises backup pad and two ribs, and overall structure is simple, and the mould die sinking of being convenient for of this structure, greatly reduced the manufacturing cost of ration pipette.

Description

Small-capacity quantitative dripping and sucking pipe

Technical Field

The utility model relates to a technical field of liquid sampling, especially a small capacity's ration is dripped straw.

Background

With the popularization of semi-automatic analyzers in the field of medical biochemical inspection, micro quantitative sampling becomes a key point for the accuracy of inspection results. Due to the micro-scale detection of the sample, the detection is completed by a micro quantitative dropping pipette for sampling and a dropping device.

However, most of the existing quantitative pipette has a complicated structure, so the molds used for producing the prior quantitative pipette are also complicated, and the cost of the prior quantitative pipette is high.

In view of the above, the present inventors have specifically designed a small-capacity pipette, and have resulted in this disclosure.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the technical scheme of the utility model is as follows:

a small-capacity quantitative pipette comprises a dropper, a sleeve pipe, a capillary pipe and a connecting component, wherein the inner part of the sleeve pipe is hollow, and the connecting component is used for connecting the dropper, the sleeve pipe and the capillary pipe;

the connecting assembly is composed of a supporting plate which is arranged in the sleeve and is close to the axial center of the sleeve for connecting the dropper and two ribs which are symmetrically arranged below the supporting plate and are used for connecting the capillary tube.

Further, the central axes of the sleeve, the dropper and the capillary are coincident.

Furthermore, the outer side walls of the two ribs are connected with the inner side wall below the sleeve.

Furthermore, the inner side walls of the two ribs are provided with arc surfaces with the inner diameter equal to that of the dropper.

Further, an annular step is arranged on the outer side wall of the opening at the upper end of the sleeve.

Furthermore, the outer side wall of the annular step is at least provided with two inwards concave grooves.

Further, the capacity of the capillary tube is 5-10 microliter.

The cup further comprises a cup cover, and a first step in interference fit with the cup cover is arranged at the upper end of the sleeve; the cup cover is internally provided with a second step which is in interference fit with the inner side wall of the dropper.

Further, still include the cup body, cup body and bushing lateral wall interference fit.

Furthermore, the dropper, the sleeve with a hollow inner part, the capillary tube and the connecting component are of an integrated structure and are made of medical plastics.

The utility model discloses a connection that burette, pipe box and capillary were realized to the ration pipette passes through coupling assembling, and wherein coupling assembling only comprises backup pad and two ribs, and overall structure is simple, and the mould die sinking of being convenient for of this structure, greatly reduced the manufacturing cost of ration pipette.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it.

Wherein:

FIG. 1 is a schematic structural view of the quantitative drip tube of the present invention;

FIG. 2 is a top view of the burette of the present invention;

FIG. 3 is a side view of the burette of the present invention;

fig. 4 is a cross-sectional view a-a of fig. 3 according to the present invention;

figure 5 is a half-sectional view of the burette of the present invention.

Description of reference numerals:

10. a dropper; 20. a sleeve; 30. a capillary tube; 40. a connecting assembly; 41. a support plate; 42. ribs; 421. arc shape

Kneading; 50. an annular step; 51. a groove; 60. a first step.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention clearer and more obvious, the following description of the present invention with reference to the accompanying drawings and embodiments is provided for further details. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1 to 5, a small-capacity pipette according to a preferred embodiment of the present invention includes a pipette 10, a hollow casing 20, a capillary 30, and a connecting assembly 40 for connecting the pipette 10, the casing 20, and the capillary 30, wherein the central axes of the casing 20, the pipette 10, and the capillary 30 are coincident.

The connecting assembly 40 is composed of a supporting plate 41 which is arranged in the sleeve 20 and is close to the axial center of the sleeve 20 and is used for connecting the dropper 10, and two ribs 42 which are symmetrically arranged below the supporting plate 41 and are used for connecting the capillary 30; the upper ends of the two preferred ribs 42 are fixedly arranged on the lower end face of the support plate 41, and the outer side wall is fixedly connected to the inner side wall below the sleeve 20, so that the structure is simple, the stability is high, and the whole structure is firm. The inner side walls of the two ribs 42 are provided with arc surfaces 421 with the inner diameter equal to that of the dropper 10, so that the liquid in the capillary 30 can be conveniently dropped into the dropper 10.

The outer side wall of the upper opening of the sleeve 20 is provided with an annular step 50, and the outer side wall of the annular step 50 is at least provided with two inwards concave grooves 51, so that a quantitative dripping and sucking pipe can be conveniently grabbed.

The capacity of the capillary tube 30 of the present invention is 5-10 microliters, specifically, the inner diameter of the capillary tube 30 is not changed, and the length of the capillary tube is utilized to increase and decrease the capacity.

The embodiment also comprises a cup cover, wherein the upper end of the sleeve 20 is provided with a first step 60 in interference fit with the cup cover; the second step is arranged in the inner side wall of the dropper 10 in interference fit in the cup cover, the first step 60 is in interference fit with the cup cover, and the second step is in interference fit with the dropper 10, so that the cup cover can be firmly and detachably fixed; still include the cup body, cup body and sleeve pipe 20 lateral wall interference fit, the leakproofness can be guaranteed in the cooperation use of bowl cover and cup body. The cup cover and the cup body in the embodiment are of the existing structure and are not described in detail herein.

The dropper 10, the hollow interior cannula 20, the capillary tube 30 and the connection assembly 40 are of one-piece construction and are made of medical grade plastic.

When the quantitative drip and suction pipe of the utility model is used, the cup body is firstly pulled out, and the capillary 30 is used for sampling the sampling liquid; then inserting the end of the capillary tube 30 into the cup body filled with the quantitative reagent; when the sampling liquid needs to be taken out, the cup cover is pulled out, the cup body is squeezed, the liquid is dripped out from the burette 10, the operation time is greatly shortened, and the working efficiency is improved.

To sum up, the utility model discloses a ration drips the straw and passes through coupling assembling and realize the connection of burette, pipe box and capillary, and wherein coupling assembling only comprises backup pad and two ribs, and overall structure is simple, and the mould die sinking of being convenient for of this structure, greatly reduced the manufacturing cost of ration drip straw.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without modification to the method and technical solution of the present invention, or the present invention can be directly applied to other occasions without modification, all within the scope of the present invention.

Claims

1. A small-volume quantitative pipette is characterized by comprising a dropper (10), a sleeve (20) with a hollow interior, a capillary tube (30) and a connecting assembly (40) for connecting the dropper (10), the sleeve (20) and the capillary tube (30);

the connecting component (40) is composed of a supporting plate (41) which is arranged in the sleeve (20) and is close to the axial center of the sleeve (20) and used for connecting the dropper (10) and two ribs (42) which are symmetrically arranged below the supporting plate (41) and used for connecting the capillary tube (30).

2. A small volume burette tube according to claim 1, wherein the central axes of said sleeve (20), said burette tube (10) and said capillary tube (30) coincide.

3. A low volume burette as claimed in claim 1, wherein the outer side walls of said ribs (42) are connected to the inner side walls of the lower portion of the sleeve (20).

4. A small volume burette tube according to claim 1, wherein the inner side walls of said ribs (42) are provided with an arc-shaped surface (421) having an inner diameter equal to the inner diameter of the burette (10).

5. A low volume burette straw as claimed in claim 1, wherein said sleeve (20) is provided with an annular step (50) on the outer side wall of its upper end opening.

6. A low volume burette according to claim 5, wherein said annular step (50) is provided with at least two inwardly concave recesses (51) on the outer side wall.

7. A small volume burette according to claim 5, wherein the capillary tube (30) has a volume of 5-10 microliters.

8. The small-capacity burette straw of claim 1, further comprising a cap, wherein a first step (60) in interference fit with the cap is arranged at the upper end of the sleeve (20); the cup cover is internally provided with a second step which is in interference fit with the inner side wall of the dropper (10).

9. A low volume burette according to claim 1 further comprising a cup body, said cup body being in interference fit with an outer sidewall of the sleeve (20).

10. A small volume burette tube according to claim 1, wherein the burette (10), the internally hollow sleeve (20), the capillary tube (30) and the connecting assembly (40) are of unitary construction and are made of a medical grade plastic.