Micro-positive pressure needle-avoided medical connector

Abstract

A micro-positive pressure needle-avoided medical connector comprises a sleeve, an elastic valve body and a connection seat, wherein the sleeve is formed by a body and a female Luer tapper; the width of the body is 1.15 to 1.2 times of the width of the female Luer tapper; the length of the body is 2.4 to 2.7 times of the length of the female Luer tapper; the elastic valve body is formed by a base and a head part; and the connection seat is formed by a base seat, a conduit and an insertion part. Therefore, the micro-positive pressure needle-avoided medical connector can be easily fixed on a patient hand, causes no movements of the hand, reduces discomfort of the patient, and reduces residual amount of medicament, nutrition or blood in a cavity and waste of the medicament, the nutrition or the blood; the elastic valve can only produce micro-positive pressure during the restoration; instant negative pressure can be avoided in the sleeve; and blood of the patient returning to the cavity canbe avoided.

Description

technical field [0001] The present invention relates to a needle-free medical connector, in particular to a micro-positive pressure needle-free medical connector for repeatedly injecting medicine, nutrition, blood transfusion or drawing blood for patients and preventing blood backflow. Background technique [0002] The existing positive pressure needle-free medical connector includes a sleeve, an elastic valve body and a connecting seat. A female Luer tapper of the sleeve is arranged on the top of the body of the sleeve, a connecting seat is arranged on the bottom of the body of the sleeve, and an elastic valve body is arranged on the connecting seat and is located inside the sleeve. Wherein, the connecting seat is provided with an air hole, and the air hole is connected between the cavity of the elastic valve body and the external space. [0003] However, the size of the body of the sleeve of the existing positive pressure needle-free medical connector is too large, and th...

AI Technical Summary

Problems solved by technology

[0003] However, the size of the body of the sleeve of the existing positive pressure needle-free medical connector is too large, and the size of the elastic valve body and the connecting seat will also be too large due to the size of the body of the sleeve, resulting in the size of the sleeve. The volume of the main body, the elastic valve body and the connecting seat are too large, which causes the following problems: first, it is difficult to fix on the patient's hand; second, even if it is barely fixed on the patient's hand, it is easy to affect the patient's The movement of the hands of the sleeve makes the patient uncomfortable; thirdly, a large amount of medicaments, nutritional products or transfused blood tends to remain in the chamber of the sleeve, resulting in waste of medicaments, nutrient products or transfused blood; Fourth, after the injection syringe is pulled out, the elastic valve body is in the process of restoring its shape, and because of its large volume, the momentary positive pressure generated is also large, causing the medicine to flow quickly to the human body, causing discomfort to the patient

However, the outer peripheral surface of the body of the sleeve body of the existing positive pressure needle-free medical connector is very smooth, and the user's fingers are easy to slip and it is difficult to hold it tightly. Difficulty of the female Luer connector

Images