Continuous positive pressure indwelling needle and installation and using method thereof

Abstract

The invention provides a continuous positive pressure indwelling needle and an installation and using method thereof. The continuous positive pressure indwelling needle is formed by assembling a continuous positive pressure device and an indwelling needle body into a whole. The continuous positive pressure device comprises a screw fitting, a protective cover, a supporting cylinder, a silica gel liquid storage bag and one or more layers of hollow nanometer films. The hollow nanometer films are placed into an inner cavity of the adhesive end of the supporting cylinder and fixed together through a sealing object. The supporting cylinder and the screw fitting are adhesively connected and fixed. The opening ends of the hollow nanometer films are opposite to a liquid outlet of the screw fitting. The supporting cylinder is sleeved with the silica gel liquid storage bag. The upper closed end of the silica gel liquid storage bag is installed in a liquid adding hole in the upper end of the protective cover. The screw fitting and the protective cover are welded into a whole. According to the continuous positive pressure indwelling needle, continuous positive pressure can be achieved for a long time, the positive pressure state can be kept for a long time after liquid is added one time, and liquid can be added repeatedly, so that blood entering an indwelling needle catheter flows slowly, the amount of blood entering the catheter is decreased, and then the phenomenon that thrombi block a vessel is avoided.

Description

technical field [0001] The invention belongs to the field of disposable medical devices, in particular to a continuous positive pressure indwelling needle in an infusion set and its installation and use method. Background technique [0002] After the 21st century, indwelling needles have been widely used and gradually replaced traditional metal venous needles. The superiority of indwelling needles has been recognized by doctors and patients. With the popularization of indwelling needles, its own problems gradually emerged, and gradually attracted attention, which troubled doctors and patients. The main cause of trouble is that the indwelling needle catheter is left in the blood vessel for a long time. Due to the exclusion mechanism of the human body, blood coagulation will occur on the surface of the catheter, which will eventually cause the problem of thrombus blocking the catheter. This brings new problems to clinical application. In order to reduce the occurrence of thr...

AI Technical Summary

Problems solved by technology

[0003] At present, major medical institutions are adopting regular flushing and sealing tube measures to prevent the occurrence of thrombus blockage. When using a syringe to suck blood clots, some blood will also be sucked into the syringe and discarded together, and some precious blood will be lost.

There are many steps in the implementation of flushing and sealing tubes, which have stricter requirements for medical staff and increase the work intensity of medical staff

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