Indwelling needle set for collecting blood or administering drugs in real time

Abstract

An indwelling needle set for collecting blood or administering drugs in real time comprises a needle body; the needle body is provided with two indwelling needles connected through an extension tube, the extension tube is provided with a blood storage cavity and a peristaltic pump, the blood storage cavity is an elastic instant-recovery device provided with a blood collecting hole, an automatic sampler is connected to the blood collecting hole, the peristaltic pump is connected with a power supply through an electric lead, and the electric lead is provided with a switch. The indwelling needle set is reasonable in structural design, allows real-time collection of blood or administration of drugs, is simple to operate, allows optimal blood collection or drug administration under sampling and time relevancy and is suitable for clinical popularization.

Description

technical field [0001] The invention relates to a medical device, in particular to an indwelling needle capable of collecting blood or administering medicine in real time. Background technique [0002] Indwelling needles have become a more commonly used medical device in hospital nursing work. They have the advantages of reducing the number of punctures for patients, reducing the pain of punctures, and reducing the workload of medical staff. The existing indwelling needle device is generally single-end punctured into the blood, and the other end is a semi-closed blood collection system. The semi-closed system is in a closed state when no blood is collected, and a certain amount of anticoagulant is injected into the closed end to prevent coagulation. When blood is collected, the blood is drawn out through a negative pressure system such as a syringe to form a transient passage to obtain the required blood. Similarly, the semi-closed system is also in a closed state when...

AI Technical Summary

Problems solved by technology

[0003] The general disadvantages of the existing indwelling needles are: 1. There is a dead volume in the semi-closed system, that is, the lumen of the existing indwelling needle will always be filled with the remaining blood and anticoagulation from the previous operation during the next blood collection or drug administration operation. Agent, this part of blood and anticoagulant will affect the next operation

Especially when measuring blood drug concentration and other indicators, when the blood drug concentration rises, the blood and anticoagulant in the dead volume of the lumen will dilute the blood at the next time point, resulting in a low measured result; otherwise, the result will be biased. high

This situation will lead to the deviation of the obtained results from the true value and affect the comprehensive evaluation results of the drug.

2. If the sampling is related to time, the blood indicators collected by the semi-closed system cannot accurately reflect the actual blood indicators at that time point

If the blood in the dead volume is discarded in advance, it will increase the workload and waste a lot of blood resources

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