Infusion stopping clip device for indwelling needle

Abstract

The invention relates to an infusion stopping clip device for an indwelling needle. The infusion stopping clip device comprises an infusion stopping clip which is provided with a central through hole,an anti-counterflow through hole, a flushing through hole, and two elastic grooves. The infusion stopping clip sleeves an extension tube via the central through hole, and the anti-counterflow throughhole and the flushing through hole horizontally extend along both sides of the central through hole, respectively. The two elastic grooves are respectively arranged at both sides of the anti-counterflow through hole and along a same axial direction as the anti-counterflow through hole. The elastic grooves are deformed when being squeezed. The anti-counterflow through hole and the flushing throughhole have elongated cross sections. The width of the anti-counterflow through hole and the flushing through hole is less than the outer diameter of the extension tube. The width of the anti-counterflow through hole is greater than the width of the flushing through hole. According to the invention, when the infusion stops, the extension tube is squeezed by restoring deformation of the elastic grooves, so that trace amount of fluid is discharged out of a cannula, thereby achieving the purposes of preventing blood from flowing back. The extension tube moves into the flushing through hole, and due to moving of the extension tube, the extension tube is squeezed by the flushing through hole, thereby achieving automatic flushing with pressure.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to an indwelling needle liquid stop clip device. Background technique [0002] Venous indwelling needle is a common medical device in nursing work. It is easy to use and reduces the number of punctures for patients, thereby reducing repeated punctures during clinical infusion, reducing the pain of puncture for patients and the workload of clinical nurses. It has been widely used in clinical practice today. [0003] During the indwelling needle, the liquid flow channel must be blocked with a liquid stop clip. After closing the liquid stop clip, it is easy to cause negative pressure in the catheter during the non-infusion process. Even a slight negative pressure will cause blood to flow into the indwelling catheter. In the cannula of the needle, thrombus will soon form and block the cannula, causing harm to the human body. For this reason, in recent years, there have bee...

AI Technical Summary

Problems solved by technology

[0003] During the indwelling needle, the liquid flow channel must be blocked with a liquid stop clip. After closing the liquid stop clip, it is easy to cause negative pressure in the catheter during the non-infusion process. Even a slight negative pressure will cause blood to flow into the indwelling catheter. In the cannula of the needle, a thrombus will quickly form and block the cannula, causing harm to the human body

For this reason, in recent years, there have been many products of elastic hemostatic clips or positive pressure hemostatic clips, which have a positive effect on preventing blood backflow from forming thrombus. In the residual liquid of the tube, when a certain concentration is reached, a thrombus will be formed to block the tube

[0004] Therefore, when suspending the infusion treatment for indwelling, it is necessary to lock the tube with anticoagulant heparin, or flush the tube with normal saline, and repeat the flushing every 6 to 8 hours. However, this will increase the nursing workload, increase the chance of infection and increase the Medical expenses

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