Blood drawing device for collecting blood samples

Abstract

The present invention discloses a blood drawing device for collecting blood samples. The blood drawing device comprises a barrel body, an upper end and a lower end of the barrel body are respectivelyfixedly connected with an upper blocking cap and a lower blocking cap, an upper surface of the upper blocking cap is fixedly connected with a flow distribution block, a flow distribution cavity is formed in the flow distribution block, a blood inlet of the flow distribution cavity is movably connected with a first hose, each blood outlet of the flow distribution cavity is movably connected with athird hose, lower ends of the third hoses penetrate through a side wall of the upper blocking cap, extend into chamber cavities and are fixedly connected with puncture needles, lower ends of the puncture needles movably insert into blood collecting tubes, a plurality of sliding grooves are formed in an inside of the upper blocking cap, and flow stop rods are slidably connected in the sliding grooves. Processes of pulling out a drainage device and replacing the drainage device after blood collection of the blood collecting tubes are eliminated, a risk of frequent contact of an end part of the blood collection device with air is avoided, and the blood drawing device prevents occurrence of blood contamination problems and improves accuracy of blood testing.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a blood drawing device for collecting blood samples. Background technique [0002] Blood drawing is one of the routine physical examination items. Various diseases can be tested through blood test, which can reflect the health status of the human body in detail. At the same time, doctors provide necessary auxiliary information for formulating treatment plans through blood test results. Generally, blood collection tubes are used to collect blood. At present, multiple bottles of blood samples need to be drawn during the blood drawing process. The specific method is to use a blood collection and drainage device to collect enough samples from one blood collection tube, and then pull it out and insert it into another blood collection tube. , and this blood collection method will cause frequent contact between the end of the blood collection device and the air, which may cause ...

AI Technical Summary

Problems solved by technology

[0002]Blood drawing is one of the routine physical examination items. Various diseases can be detected through blood drawing tests, which can reflect the health status of the human body in detail. At the same time, the doctor The results of blood tests provide necessary auxiliary information for formulating treatment plans. Clinically, blood collection tubes are generally used for blood collection. At present, multiple bottles of blood samples need to be drawn during the blood drawing process. After collecting enough samples, pull out and insert it on another blood collection tube, and this blood collection method will cause the end of the blood collection device to come into frequent contact with the air, which may cause contamination of the collected blood and reduce the accuracy of the blood test. We propose a blood-drawing device for collecting blood samples

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