An indwelling catheter micro-sustained release infusion device

Abstract

The invention belongs to the technical field of a medical instrument and belongs to an indwelling catheter trace slow-release transfusion device. According to the indwelling catheter trace slow-release transfusion device, a front joint, a positive pressure chamber and a back joint which are connected into a whole build a straight transfusion path and a slow-release path, wherein the straight transfusion path is used for normal transfusion, the slow-release path is used for realizing positive pressure slow-release transfusion by utilizing residual medicine liquid in a positive pressure chamber after a transfusion appliance is removed, in addition, the two transfusion paths are switched through a switching assembly, arranged in the positive pressure chamber, of the main body, the straight transfusion path is built when the transfusion appliance is connected with transfusion liquid, when the transfusion appliance is removed, the straight transfusion path is closed in a time delay way, and the slow-release path is switched and started to be used. On the basis, the residual medicine liquid realizes the slow transfusion through the arrangement of a slow-release valve for ensuring that an indwelling catheter maintains a positive pressure state for a long time, so the dual goals that the positive pressure pipe sealing is realized at the separation moment of the transfusion appliance, the indwelling catheter can effectively prevent blood from flowing back to the indwelling catheter for a long time and can effectively prevent the thrombus formation in the indwelling catheter indwelling period are reached.

Description

technical field [0001] The present invention relates to the technical field of medical devices, in particular to an indwelling catheter micro-indwelling catheter for preventing blood backflow when the indwelling catheter is separated from the infusion set when the indwelling needle is used for transfusion, and blood backflow during indwelling in the blood vessel to form thrombus or blockage. Release the infusion set. Background technique [0002] Indwelling needles, including PICCs, have been used clinically since 1958 as an excellent substitute for steel needles for intravenous infusion. Their advantages and disadvantages are extremely prominent, and their shortcomings are mainly reflected in the problems of blood coagulation and blockage of indwelling catheters. These problems It is serious and large-scale, and it is also recognized. Up to now, for the complications caused by the application of intravenous indwelling catheters and the elimination of the risks of their use...

AI Technical Summary

Problems solved by technology

[0004] The problem to be solved by the present invention is to provide a method that is easy to operate and can prevent "syringe-related blood return" and the phenomenon of blood return during indwelling, that is, it has the performance of existing positive pressure joints, and at the same time, it also has long-term prevention of blood return during indwelling. An indwelling catheter micro-volume slow-release infusion device that uses a catheter flusher to flush the catheter, and an indwelling catheter anti-thrombosis device that completely solves the phenomenon of coagulation, thrombus formation or blockage during the use of intravenous indwelling needles

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