Positive-pressure slow release joint

Abstract

The invention discloses a positive-pressure slow release joint. In use, an external infusion set is inserted into a sealed section, a piston is pushed to move downwards till the piston retreats to an active section, an external joint communicates with a positive-pressure chamber, and liquid in the external infusion set sequentially passes an input port, the sealed section, a diversion channel, the positive-pressure chamber, a liquid passing hole, a column channel and an output port. When infusion is completed, the external joint is pulled out to stop infusion, the piston is driven by an elastic part to block the positive-pressure chamber again, and at the same time, the liquid passing hole is also blocked by the piston; at the moment, the positive-pressure chamber is filled with liquid, and a micro-infiltration channel is formed in the joint, so that formation of thrombi when a venous indwelling needle stops infusion can be effectively prevented. Normal infusion can be realized, micro-infiltration can be formed in the joint when infusion is stopped, and thrombosis can be effectively prevented; furthermore, after the external infusion set is removed, the joint is automatically switched to the positive-pressure micro-infiltration state, so that blood return is reduced, additional operation of medical staff is not needed, and working intensity of medical staff is reduced greatly.

Description

technical field [0001] The invention relates to the technical field of medical machinery, in particular to a positive pressure slow release joint. Background technique [0002] With the continuous improvement of nursing technology and the continuous update of medical supplies, the indwelling needle has been recommended by the World Health Organization as the safest puncture tool. It is easy to operate, can reduce repeated punctures, protect blood vessels, relieve pain of patients, facilitate clinical medication and emergency rescue, and reduce the workload of nurses. It has been widely used in clinical practice. However, some new problems have appeared in the clinical work of intravenous indwelling needles. After each infusion, if the needle tube or the cone or the external connector of the infusion set are pulled out directly from the indwelling device, a cavity will be formed, resulting in negative pressure. , causing blood backflow into the indwelling device, forming thr...

AI Technical Summary

Problems solved by technology

During use, before the continuous positive pressure liquid supply device is installed on the three-way joint, the medical staff operate the continuous positive pressure liquid supply device to inhale the liquid, and then install the continuous positive pressure liquid supply device on the three-way joint to achieve continuous positive pressure. The liquid inside the pressure liquid supply device leaks out to the output port of the three-way joint under positive pressure, so as to prevent the formation of thrombus. After that, the positive pressure cannot be formed in the tee joint in time, causing blood backflow and affecting the medical effect

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