Sensitive blood return indwelling needle

Abstract

The invention relates to a sensitive blood returning remaining needle, which comprises a steel needle, a flexible tube, a clockwise device, a soft sealing body and an outer casing body, wherein, a sensitive blood returning device is installed at the rear part of the outer casing body, the rear end of the flexible tube is inserted and installed at the front end of the outer casing body, the clockwise device ensures that the rear end of the flexible tube is tightly clamped and fixed with the inner wall of the outer casing body, the flexible sealing body is fixedly installed in the outer casing body, the steel needle penetrates the flexible sealing body, the front half section thereof is inserted and installed in the flexible tube, to expose the point of the steel needle, and the tail part of the steel needle is connected with the sensitive blood returning device; the sensitive blood returning device is composed of a gasbag external supporting part, a gasbag and a gasbag internal supporting part, the opening of the gasbag is supported by the gasbag internal supporting part, the gasbag and the gasbag internal supporting part are installed in the external supporting part together, and are tightly clamped and fixed. The sensitive blood returning remaining needle has the advantages that the blood returning condition can be judged quickly during the transfusion process by medical care personnel, to reduce the work strength, and relieve the pain of patients; the operation of the product is convenient, and is favorable for being promoted and used during the clinical work; the structure and the manufacturing process are simple, the cost is low, and the sensitive blood returning remaining needle has very wide market prospect.

Description

technical field [0001] The invention relates to a medical device, in particular to an indwelling needle with a sensitive blood return function. Background technique [0002] The most basic requirement for medical staff to deliver drugs to patients is to infuse safely. The existing disposable infusion needles are difficult to observe blood return during puncture, which makes it difficult for nurses to control the depth of puncture and quickly judge whether the needle tip penetrates into the patient. Intravascular, repeated punctures can cause pain to the patient. Contents of the invention [0003] In view of the above-mentioned shortcomings, the object of the present invention is to provide a sensitive blood return device with simple structure, which only needs to install a sensitive blood return device in the existing disposable indwelling needle, so as to quickly judge whether the needle tip penetrates into the blood vessel and solve the problem of accurate puncture. Cat...

AI Technical Summary

Problems solved by technology

[0002] The most basic requirement for medical staff to deliver drugs to patients is to infuse safely. The existing disposable infusion needles are difficult to observe blood return during puncture, which makes it difficult for nurses to control the depth of puncture and quickly judge whether the needle tip penetrates into the patient. Intravascular, repeated puncture will cause pain to the patient

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