阅读说明：本技术 一种真空采血管取样结构 (Vacuum test tube sampling structure ) 是由 郝书顺 于 2019-12-19 设计创作，主要内容包括：本发明涉及一种真空采血管取样结构,其包括座体、设置在底座上用于刺破采血管的取样针、设置在座体上与取样针连通的充气管路、与充气管路连通的取样管路以及用于给充气管路和取样管路充气的气孔,在气孔与充气管路之间设置有充气橡胶阀,在气孔与取样管路之间设置有取样橡胶阀；本发明通过向采血管内充气产生压力差,利用压力差将采血管内的血液反向压出采血管内,实现自动从真空采血管内进行取样的操作。(The invention relates to a vacuum blood collection tube sampling structure, which comprises a seat body, a sampling needle, an inflation pipeline, a sampling pipeline and an air hole, wherein the sampling needle is arranged on the seat body and is used for puncturing a blood collection tube; the invention realizes the operation of automatically sampling from the vacuum blood sampling tube by inflating the blood sampling tube to generate pressure difference and reversely extruding the blood in the blood sampling tube out of the blood sampling tube by utilizing the pressure difference.)

1. The utility model provides a vacuum test tube sampling structure, its characterized in that it includes pedestal (1), set up sampling needle (9) that are used for puncturing the heparin tube on pedestal (1), set up inflation tube way (8) with sampling needle (9) intercommunication on pedestal (1), with the sample pipeline of inflation tube way (8) intercommunication and be used for giving inflation tube way (8) and sample pipeline gas pocket (3) of aerifing, be provided with between gas pocket (3) and inflation tube way (8) and aerify rubber valve (5), be provided with sample rubber valve (4) between gas pocket (3) and sample pipeline.

2. The evacuated blood collection tube sampling structure according to claim 1, wherein a sampling port (2) is provided at one end of the sampling tube.

3. The evacuated blood collection tube sampling structure according to claim 1, wherein the gas filling line (8) and the sampling line are communicated through a gas supply line (11), and the gas hole (3) is communicated with the gas supply line (11).

4. The vacuum blood collection tube sampling structure according to claim 1, wherein the sampling pipeline comprises an end pipeline (7) and a middle pipeline (6), and the sampling rubber valve (4) is arranged on the pipeline between the air hole (3) and the middle pipeline (6).

5. The evacuated blood collection tube sampling structure according to claim 4, wherein the central tube (6) has a continuous S-shape.

6. The vacuum blood collection tube sampling structure according to claim 1, wherein a blind hole (10) for placing a blood collection tube is arranged on the upper end face of the seat body (1), and the sampling needle (9) is arranged at the bottom of the blind hole (10).

7. The evacuated blood collection tube sampling structure according to claim 1, wherein a rubber air inlet is provided on the air hole (3).

Technical Field

The invention relates to a sampling structure of a vacuum blood collection tube.

Background

The vacuum blood collection tube is very common in modern medical treatment, is usually used for collecting human blood, then carries out a series of chemical examination detections, in the actual detection process, needs to take the blood sample in the blood collection tube many times, adopts the mode of manual blood collection at present, and this has just increased cross infection's risk.

Disclosure of Invention

The invention aims to provide a vacuum blood sampling tube sampling structure which can realize the discharge of blood from a vacuum blood sampling tube.

The technical scheme adopted by the invention is as follows: a vacuum blood collection tube sampling structure comprises a base body, a sampling needle arranged on the base body and used for puncturing a blood collection tube, an inflation pipeline arranged on the base body and communicated with the sampling needle, a sampling pipeline communicated with the inflation pipeline, and an air hole used for inflating the inflation pipeline and the sampling pipeline, wherein an inflation rubber valve is arranged between the air hole and the inflation pipeline, and a sampling rubber valve is arranged between the air hole and the sampling pipeline.

Furthermore, one end of the sampling pipeline is provided with a sampling port.

Further, the gas charging pipeline is communicated with the sampling pipeline through a gas supply pipeline, and the gas hole is communicated with the gas supply pipeline.

Further, the sampling pipeline comprises a tail end pipeline and a middle pipeline, and the sampling rubber valve is arranged on the pipeline between the air hole and the middle pipeline.

Further, the middle pipeline is in a continuous S shape.

Further, the up end of pedestal is provided with the blind hole that is used for placing the heparin tube, the sample needle sets up the bottom at the blind hole.

Further, a rubber air inlet is arranged on the air hole.

The invention has the positive effects that: according to the invention, the gas charging pipeline with a valve and the sampling pipeline are communicated with the sampling needle, and the gas charging hole is arranged for charging gas into the blood sampling pipe, firstly, the sampling rubber valve of the sampling pipeline is closed, the gas charging rubber valve is opened to charge gas into the blood sampling pipe through the gas hole, so that the pressure in the blood sampling pipe is increased, the gas charging is stopped after the gas charging is carried out for a period of time, then, the sampling rubber valve and the gas charging rubber valve are simultaneously opened, the blood in the blood sampling pipe flows back to the gas charging pipeline and the sampling pipeline under the action of pressure intensity, then, the gas charging rubber valve is closed, the sampling rubber valve is opened, the gas charging is carried out through the gas. The blood sampling device has the advantages that the pressure difference is generated by inflating the blood sampling tube, the blood in the blood sampling tube is reversely extruded out of the blood sampling tube by the pressure difference, the operation of sampling from the vacuum blood sampling tube is realized, the automatic blood sampling is realized through equipment, the manual operation is reduced, and the cross infection is effectively prevented.

Drawings

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

FIG. 2 is a schematic view of a sampling pipe structure according to the present invention;

FIG. 3 is a schematic view of a blind via structure according to the present invention.

Detailed Description

As shown in fig. 1-3, the blood sampling tube holder comprises a holder body 1 and a blind hole 10 located at the top of the holder body 1 and used for placing a vacuum blood sampling tube, wherein a sampling needle 9 is arranged in the blind hole 10, the blood sampling tube is inversely inserted into the blind hole 10, and the sampling needle 9 pierces the blood sampling tube to enter the interior of the blood sampling tube.

Be provided with the gas tube way 8 that communicates with sampling needle 9 and the sample pipeline that communicates with gas tube way 8 through air supply line 11 on pedestal 1, the intercommunication has gas pocket 3 on air supply line 11, and gas pocket 3 links to get into gas in the pipeline with the air pump, and the air pump should guarantee that gas pocket 3 department has certain pressure all the time, flows into in the air pump when preventing the blood refluence. The two ends of the air supply pipeline 11 are respectively communicated with the air charging pipeline 8 and the sampling pipeline, an air charging rubber valve 5 is arranged on the pipeline of the air hole 3 communicated with the air charging pipeline 8, and a sampling rubber valve 4 is arranged on the pipeline of the air hole 3 communicated with the sampling pipeline.

In order to improve the tightness of the air hole 3, a rubber air inlet is arranged on the air hole 3, and the tightness is better when the air hole is connected with an air pump.

The sampling pipeline comprises a continuous S-shaped middle pipeline 6 and a tail end pipeline 7, one end of the tail end pipeline 7 is communicated with the middle pipeline 6, the middle pipeline 6 is connected with the air supply pipeline 11, and a sampling port 2 is arranged at the other end of the tail end pipeline 7.

When the blood sampling tube is used, a blood sampling tube is inversely inserted into the blind hole 10, and the sampling needle 9 is inserted into the blood sampling tube. And opening the air inflation rubber valve 5, closing the sampling rubber valve 4, inflating the air hole 3 by using the air pump, communicating the air hole 3, the air supply pipeline 11 and the inflation pipeline 8 at the moment, and inflating the blood sampling tube through the sampling needle 9, so that the pressure intensity in the blood sampling tube 9 is greater than the external air pressure to form a pressure intensity difference. And then stopping inflating, opening the sampling rubber valve 4, forming a passage by the air supply pipeline 11, the inflation pipeline 8 and the sampling pipeline at the moment, communicating the inside of the blood sampling pipe with the external atmosphere, and allowing the blood in the blood sampling pipe to flow into the inflation pipeline 8, the air supply pipeline 11 and the sampling pipeline through the sampling needle 9 under the action of pressure. Be provided with the liquid level detection mouth at the lower extreme of middle part pipeline 6, it has the sensor to correspond at the liquid level detection mouth, when blood reachd the liquid level detection mouth, close inflatable rubber valve 5 to open sample rubber valve 4, open the air pump once more and aerify in to gas pocket 3, gas pocket 3 this moment, air supply line 11 and sample pipeline form the route, and the blood in air supply line 11 and the sample pipeline just can be followed sample mouth 2 discharges, accomplishes the sample work of vacuum test tube.

The invention discharges blood from the blood sampling tube by using pressure difference, and can control sample preparation amount in a certain range by controlling the pressure filled in the blood sampling tube, thereby realizing automatic blood sampling.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.