Micro-fluidic flip type venous indwelling needle

Abstract

The invention belongs to the technical field of medical instruments, and discloses a micro-fluidic flip type venous indwelling needle which comprises a front tee joint, a rear tee joint, an infusion hose and a liquid stopping clamp, and the front tee joint and the rear tee joint are communicated through the infusion hose. A guide passage is arranged on the inner side of the liquid stopping clamp; the infusion hose penetrates through the liquid stopping clamp; the needle further comprises a flip type needle tip protection device. The flip type needle tip protection device is provided with a needle tip protection groove, and an anti-falling barb is arranged in the needle tip protection groove; an annular sliding groove is formed below the needle tip protection groove. The annular sliding groove is buckled and fixed with the puncture needle base. The indwelling needle can continuously prevent negative pressure from being formed, the problem of catheter embolism is effectively solved, the anti-acupuncture function of the indwelling needle is efficiently achieved, cross infection in a hospital is avoided, and the problem that the success rate of one-time puncture is influenced by a traditional anti-acupuncture technology is creatively solved; and a new efficient solution for preventing puncture, hospital infection and embolism of the indwelling needle is provided.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a microfluidic flip-top intravenous indwelling needle. Background technique [0002] Intravenous injections are one of the treatments people choose when they are sick, and they are usually infused through an indwelling needle. When using an intravenous indwelling needle, the catheter and the needle core are punctured into the blood vessel together. After the catheter has completely entered the blood vessel, the needle core is withdrawn, and only the soft catheter is left in the blood vessel for infusion therapy. The use of indwelling needles can facilitate clinical medication, rescue medication for acute and critically ill patients, reduce the workload of nurses, and reduce pain in patients. Therefore, intravenous indwelling needles are widely used clinically. [0003] However, during the use of existing venous indwelling needles, blood backflow often occurs due to vario...

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Problems solved by technology

[0003] However, during the use of existing venous indwelling needles, blood backflow often occurs due to various reasons, thereby forming embolism, and even causing blockage in severe cases, which greatly affects the health of patients and cannot meet the more refined infusion in clinical practice. At the same time, the existing indwelling needle anti-acupuncture technology is a technique of locking the needle tip, which seriously affects the one-time puncture success rate of the indwelling needle, and has not been widely promoted in clinical use. Therefore, the current clinical use of vein Most of the indwelling needles are non-needle-proof, and the risk of needle-stick injury seriously threatens the physical and mental health of medical staff

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