CN202204706U - Integral sample collecting injection device - Google Patents

Abstract

The utility model discloses an integrated sample collection and filling device, which comprises a bracket, a capillary suction tube, a locking ring and a piston; the capillary suction tube is located The reagent box body of the piston, the bottom of the reagent box body is provided with a through hole, the piercing tip is a hollow structure, the front end of the piston is provided with a closed reagent chamber, and the piston is connected to the bracket by means of a locking ring; The reagent chamber, the piercing tip, the inner wall of the reagent box body and the through holes form a guide channel for the reagent. The utility model combines the capillary suction tube and the reagent box body, which can realize the integrated functions of accurate sampling, storage and quantitative addition of reagents, can effectively improve the precision of sampling and adding reagents, and reduce the difficulty of operation in the testing process.

Description

Integrated Sample Collection Injector

technical field

The utility model relates to a device for precise micro-sampling and quantitative addition of reagents, in particular to an integrated sample collection and filling device, which is used to complete the function of sampling and adding reagents in the process of biological, chemical and medical testing.

Background technique

In the process of biological, chemical, and medical testing, there are many collection operations of various samples. The current common practice is to add 500 uL of diluent to the cuvette, and then use a pipette to sample 2 uL (or 2.5, 5, 10uL, 15 ul, 20 ul, 25 ul, 30ul, etc.), after sampling, add the sample to the reaction cup, shake the reaction cup to mix the sample and diluent, then replace the pipette with a 50 uL or 100 uL range and add 50 uL of reagent to mix well to test. During the detection process, at least two pipettes with different ranges are required, and the operation process is complicated, especially for samples below 2 uL, the sampling error is large and the cost is high.

Utility model content

The technical problem to be solved by the utility model is to provide an integrated sample collection and filling device which is easy to operate and can improve the accuracy of sampling and reagent addition.

In order to solve the above technical problems, the technical solution adopted by the utility model is: an integrated sample collection and filling device, the key technology of which is: it includes a bracket, a capillary pipette, a locking ring and a piston; the capillary pipette is arranged on The front end of the bracket, the rear end of the bracket is provided with a piercing tip and a kit body capable of accommodating a piston, the bottom of the kit body is provided with a through hole, the piercing tip is a hollow structure, and the front end of the piston A closed reagent chamber is provided, and the piston is connected with the support by means of a locking ring; the reagent chamber, the piercing tip, the inner wall of the reagent box body and the through hole form a guide channel for the reagent.

The front end of the bracket is provided with two U-shaped slots side by side, and the capillary suction tube is snapped into the slots.

The capillary straw and the bracket are integrally formed by injection molding.

The support is provided with a sealing ring groove for matching with the cuvette, and the sealing ring groove is a straight groove or an arc-shaped groove.

The shape of the tail of the above-mentioned reagent chamber is matched with the shape of the piercing tip.

The beneficial effects produced by adopting the above technical scheme are: the utility model combines the capillary pipette and the kit body together, which can realize the integrated functions of accurate sampling, storage and quantitative addition of reagents, and can effectively improve the accuracy of sampling and adding reagents, Reduce the difficulty of operation during the test; through the set U-shaped card slot, the capillary straw can be easily clamped on the bracket, and because of the two card slots, capillary tubes of different specifications can be installed according to needs.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the explosion schematic diagram of Fig. 1;

The schematic diagram of Fig. 3 bracket part;

Fig. 4 is the schematic diagram of piston;

Among them, 1. Capillary pipette; 2. Card slot; 3. Sealing ring groove; 4. Kit body; 5. Locking ring; 6. Piston; 7. Snap button; 10. Bracket.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Referring to accompanying drawing 1～accompanying drawing 4, the utility model comprises support 10, capillary straw 1, locking ring 5 and piston 6; The top 8 and the kit body 4 that can accommodate the movement of the piston 6, the bottom of the kit body 4 is provided with a through hole, the piercing top 8 is a hollow structure, and the front end of the piston 6 is provided with a closed reagent chamber 9 , the piston 6 is connected with the reagent box body 4 on the bracket 10 by means of the locking ring 5, and the outer circle of the reagent box body 4 here is provided with an annular protrusion; the reagent chamber 9, piercing tip 8, reagent The inner wall and the through hole of the box body 4 form a guide channel for reagents. Capillary pipettes 1 of different specifications can be designed according to needs, such as 2.5ul, 5ul, 10ul, 15ul, 20ul, 25ul, 30ul.

There are two ways to connect the capillary 1 to the bracket 10 : first, two U-shaped slots 2 are arranged side by side at the front end of the bracket 10 , and the capillary 1 is snapped into the slot 2 . Alternatively, the capillary pipette 1 and the bracket 10 are injection molded into an integral structure.

The support 10 is provided with a seal ring groove 3 for matching with the cuvette, the seal ring groove 3 can prevent the liquid in the cuvette from leaking out, and the shape of the seal ring groove 3 is designed according to the shape of the cuvette mouth, which can be It is a straight groove or an arc groove.

The shape of the tail of the reagent chamber 9 matches the shape of the piercing tip 8. When the piston is pushed in, the space in the reagent chamber 9 is completely occupied, so that all the reagents flow into the cuvette smoothly.

During manufacture, the diameter of the inner hole of the bracket 10 is generally 5 mm to 20 mm; the inner hole size of the capillary straw 1 is 0.36 mm to 1.8 mm in diameter; the inner hole size of the piston is 2.8 mm to 15 mm in diameter. In this way, the effect of use is better, and different sizes can also be set according to the needs of use, so as to meet the use requirements.

Use the quantitative capillary pipette 1 instead of the pipette to complete accurate sampling, insert the sampled device into the reaction cup filled with the diluent, shake the reaction cup, and mix the sample in the capillary pipette with the diluent in the reaction cup. Quantitative reagents are stored in the reagent chamber 9 of the piston 6, and the sealing film of the reagent chamber is punctured by the piercing tip of the support tail by pressing the piston 6. When the piston 6 is continued to be pressed, the reagent in the reagent chamber 9 passes through the support 2 The center hole of the nozzle flows into the reaction cup, and the quantitative reagent is added into the reaction cup.

Adopting the utility model can be effectively applied in biological, chemical and medical testing processes, and can greatly improve the testing precision that requires both accurate sampling and precise addition of reagents.

The above description of the disclosed embodiments enables those skilled in the art to realize or use the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (5)

1. integrated sample collection charging point, it is characterized in that: it comprises support (10), capillary syring (1), binding ring (5) and piston (6); Said capillary syring (1) is located at the front end of support (10); The rear end of said support (10) is provided with the reagent box body (4) that punctures top (8) and can hold piston (6); The bottom of said reagent box body (4) is provided with through hole; Saidly puncture top (8) for hollow structure, the front end of said piston (6) is provided with the reagent storehouse (9) of sealing, and said piston (6) connects with support (2) by binding ring (5); Said reagent storehouse (9), the inwall that punctures top (8), reagent box body (4) and through hole form the water conservancy diversion runner of reagent.

2. integrated sample collection charging point according to claim 1 is characterized in that: said support (10) front end is provided with two draw-in grooves (2) that are the U type side by side, and said capillary syring (1) is installed on the draw-in groove (2).

3. integrated sample collection charging point according to claim 1 is characterized in that: said capillary syring (1) is the integrated injection molding structure with support (10).

4. according to claim 1,2 or 3 described integrated sample collection charging points, it is characterized in that: said support (10) is provided with and is used for the closure gasket groove (3) that cooperates with reaction cup, and said closure gasket groove (3) is straight trough or arc-shaped slot.

5. integrated sample collection charging point according to claim 4 is characterized in that: the tail shape in said reagent storehouse (9) matches with the shape that punctures top (8).

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