Disposable heparin-coated deep venous infusion tube capped core

Abstract

The invention belongs to the technical field of medical appliances, and discloses a capped tube core of a deep vein infusion tube with a heparin coating for one-time use, which is provided with a heparin cap; Inserted into the deep vein infusion tube, the tip of the core is soft and blunt, and the tail is made of a slightly tougher material. The length of the core is slightly longer than the length of the deep vein infusion tube. After each infusion, use iodophor to repeatedly disinfect the outer port of the CVC, insert the tube core from the external port with sterile gloves, and then rotate the screw cap at the end of the tube core to tightly seal the external port of the infusion tube. When using it for the first time, turn the screw cap to pull it out, and then connect the infusion tube for infusion after the empty needle is drawn back to see fresh blood. The invention can effectively avoid the thrombus formation near the inner mouth of the catheter caused by long-term catheterization, resulting in CVC blockage, and the patency of the CVC is crucial to the survival of patients.

Description

technical field [0001] The invention belongs to the technical field of medical appliances, and in particular relates to a capped tube core of a disposable deep vein transfusion tube with heparin coating. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] Deep venous catheter (CVC) is a commonly used clinical infusion device, especially for cancer chemotherapy patients or surgical patients who need long-term parenteral nutrition. Thrombosis near the internal opening is the main cause of CVC occlusion, and concentrated heparin / citric acid lock can not significantly reduce CVC occlusion. [0004] In summary, the problems in the prior art are: [0005] (1) Thrombosis near the inner opening of the catheter due to long-term catheterization leads to CVC blockage. [0006] The difficulty of solving the above technical problems: [0007] 1. The inner diameter of the tube core must match the inner diameter of ...

AI Technical Summary

Problems solved by technology

[0007] 1. The inner diameter of the tube core must match the inner diameter of the CVC tube. It should not be too thin, which will cause blood backflow to cause thrombus formation, and it should not be too thick, which will result in the failure of smooth insertion and damage to the heparin coating during the insertion process;

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