Straight-type indwelling needle

Abstract

A straight-type indwelling needle comprises an indwelling needle base and an indwelling needle hose. The lower portion of a cavity of the indwelling needle base is provided with a sealing plug made of soft elastic medical materials. The cavity of the indwelling needle is internally provided with a hard hollow liquid guiding rod which can penetrate through the sealing plug in an insertion mode, stretches into the bottom of the cavity of the indwelling needle base and is made of medical materials. The upper portion of the hard hollow liquid guiding rod is communicated with an externally-connected infusion device. According to the straight-type indwelling needle, due to the fact that the structure that the sealing plug is combined with the liquid guiding rod is ingeniously adopted, the sealing plug can be utilized for reliably sealing and isolating the indwelling needle hose and the bottom of the cavity of the indwelling needle base, it is ensured that the phenomenon that blood backflows to the exterior of the cavity of the indwelling needle base is avoided after a puncture needle is pulled out when puncturing is completed, cross infection of a medical worker and a patient is eliminated, the medical worker can pull out the puncture needle with one hand, labor intensity of the medical worker is reduced, and pressing pain and damage to blood vessels of the patient are relieved. The straight-type indwelling needle is simple and reliable in structure and high in practicability, and facilitates promotion and popularization.

Description

technical field [0001] The invention relates to an indwelling needle, in particular to a straight indwelling needle without an infusion needle, and belongs to the technical field of medical devices. Background technique [0002] There are two existing indwelling needles, one is a straight indwelling needle (or pen holder type indwelling needle), and the other is a Y-shaped indwelling needle. Among them, the straight indwelling needle has the following disadvantages in the infusion process: First, when connecting the infusion set, the infusion needle must be inserted into the bottom of the indwelling needle seat cavity, and the indwelling needle seat cavity is open, which is easy to contaminate the indwelling needle cavity Second, blood backflow will occur after the puncture needle is pulled out, which may easily cause cross-infection between medical staff and patients; third, it cannot be operated with one hand, and the blood vessel at the injection site must be pressed to p...

AI Technical Summary

Problems solved by technology

Among them, the straight indwelling needle has the following disadvantages in the infusion process: First, when connecting the infusion set, the infusion needle must be inserted into the bottom of the indwelling needle seat cavity, and the indwelling needle seat cavity is open, which is easy to contaminate the indwelling needle cavity Second, blood backflow will occur after the puncture needle is pulled out, which may easily cause cross-infection between medical staff and patients; third, it cannot be operated with one hand, and the blood vessel at the injection site must be pressed to prevent blood backflow, and the puncture needle is hard. Plastid, easy to damage and tender the patient's blood vessels; Fourth, anticoagulant should be used to lock the tube and must be done every eight hours, which is not suitable for patients with coagulation disorders; The infusion needle is inserted into the indwelling needle cavity. The "Nursing Management Standards" stipulate that after the sharps are contaminated, special sharps boxes need to be collected, which increases the work intensity of the nursing staff and the possibility of injuring the staff, and does not comply with the World Health Organization (WHO) requirements

Although the Y-shaped indwelling needle can meet the requirements of needle-free infusion, but because the Y-shaped indwelling needle is connected to a long infusion catheter, it not only affects the patient's limb activities, but the patient is prone to collision and involvement in daily activities. Painful, not easy to fix, easy to bend, causing siphon phenomenon, so that blood is sucked into the indwelling tube to form a thrombus, and when the blood flows back to the catheter, a long thrombus will be formed to block the tube, and the patient needs to be re-punctured, resulting in high medical costs , also increases the workload of nurses, and increases the risk of thrombus entering the patient's body, and when the blood returns to the catheter, it will cause psychological panic in the patient and increase the psychological burden of the patient

At the same time, more anticoagulants are used when locking the tube, which is not suitable for patients with problems with the coagulation mechanism

In addition, the material of the base of the Y-shaped indwelling needle is relatively hard, and the pressure on the local skin is relatively large, so it is not suitable for patients with edema

Images