Medical anti-thrombosis infusion connector

Abstract

The invention discloses a medical anti-thrombosis infusion connector, which comprises a spiral cap, a filter plug, a spiral tube, a spiral rod and a Luer taper, wherein the spiral cap and the spiral tube are connected; the spiral cap and the spiral rod are connected; the spiral rod is arranged in the spiral tube; a sealing plug is connected to one end of the spiral rod; and the spiral tube and the Luer taper are fixedly connected. The infusion connector provided by the invention is simple in structure and easy to operate; infusion can be conducted as a scalp needle is inserted from a spiral cap through hole and runs through the sealing plug; the sealing plug is of a structure comprising multiple layers of sealing rings, so that the sealing property of an infusion space in the spiral tube is guaranteed and the formation of thrombosis is effectively prevented; after the infusion, the scalp needle is pulled out and then the spiral cap is rotated, so that the spiral rod and the sealing plug advance towards the Luer taper; and since a passage in the spiral tube is sealed by virtue of the sealing plug, liquid is permitted to flow towards the Luer taper only when the sealing plug is propelled, even though liquid in an entire retaining needle infusion pipeline is propelled into a blood vessel in the travel of the sealing plug, so that the problem that blood flows back into the infusion pipeline due to negative pressure which is instantaneously formed in the retaining needle infusion needle when the scalp needle is pulled out is solved.

Description

technical field [0001] The invention relates to medical equipment, in particular to an antithrombotic transfusion joint used for connecting with an indwelling needle external catheter. Background technique [0002] In clinical medicine, when patients need multiple infusions, indwelling catheters are usually used in vitro, and the connection methods between indwelling catheters and infusion sets are divided into needle connection and needleless connection. In the prior art, there is a connection method with a needle. The medical infusion connector is composed of a connecting seat and a connector body affixed thereto. This connector body is usually also called a heparin cap. The needle tube of the infusion set is inserted through the sealing rubber plug on the top of the connector body. At the end of the infusion, when the needle tube of the infusion set is pulled out, the space occupied by the needle tube is close to a vacuum, which creates negative pressure in the indwellin...

AI Technical Summary

Problems solved by technology

This kind of operation is cumbersome and there will still be a space that cannot be filled by the sealing fluid, and negative pressure will still be generated. In order to make up for this deficiency, it is customary to put the stop clip on after clamping the extension tube. The catheter assembly slides in the direction, so that the extension tube is gradually squeezed, and the liquid in the extension tube is squeezed into the lumen of the indwelling catheter to drive out the backflow blood. However, when the stop clip and the extension tube are clamped, the sliding resistance is large. The extension tube is elongated and thinner. During the indwelling period, the catheter assembly is pulled out many times. In severe cases, the extension tube will be broken and cause bleeding. In addition, the catheter assembly is stuck on the patient's body. The length of the extension tube is limited. Inadvertently, the catheter assembly will be pulled away from the patient's body. In order to avoid the above-mentioned accidents, the medical staff should be cautious when operating. Sometimes the length of the stop clip is not enough to completely drive the blood out of the catheter. Therefore, this operation method Invisibly increase the workload and psychological burden of medical staff

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