High-pressure contrast agent injection system

Abstract

The invention relates to a high-pressure contrast agent injection system which comprises: a bedside support arranged on the bedside, wherein a contrast agent bag is hung on the top of the bedside support; a rocker arm assembly which extends from the middle part of the bedside support to one side; an injection head which is arranged at the tip end of the rocker arm assembly, wherein a needle cylinder is arranged at the front end of the injection head; and a three-way pipeline with three ports, wherein the three ports of the three-way pipeline are respectively connected with the contrast agent bag, the needle cylinder and a micro catheter for inputting the contrast agent into a patient, wherein the injection head comprises an execution unit and a detection control unit, the detection control unit controls the execution unit to push and pull the rubber plug in the needle cylinder at the specified precision, medicine is continuously sucked from the contrast agent bag through the three-way pipeline, and the contrast agent is injected into the body of a patient. According to the invention, the contrast agent can be injected at a precisely controlled low flow rate and a small dosage, and the adverse effect of the contrast agent on a patient is reduced.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a high-pressure contrast medium injection system. Background technique [0002] Contrast agent is one of the most commonly used drugs in interventional radiology operations, mainly used for the display of blood vessels and body cavities to improve the accuracy of diagnosis. There are various types of contrast agents, and most of the contrast agents currently used in interventional radiology are iodine-containing preparations. Contrast medium consumption is an independent risk factor for contrast nephropathy. Cigarroa et al. proposed the formula for calculating the amount of contrast agent: 5ml×body weight (Kg) / Cr(mg / dl), and the maximum amount should not exceed 300 ml. Studies have shown that the incidence of contrast nephropathy is 21%-37% if the dosage exceeds the threshold, and 0%-2% if the threshold is not exceeded. The incidence and severity of physical-chemical r...

AI Technical Summary

Problems solved by technology

[0003] Traditional angiographic high-pressure injection systems use high-dose and high-flow injections in practical applications, and patients often have to ingest unnecessary excessive doses of contrast media

However, if low flow rate and small dose injection are used in conjunction with microcatheter, the angiography will often fail due to reasons such as control accuracy.

[0004] It can be seen that there is currently no high-pressure contrast medium injection system on the market that can inject contrast medium at a precisely controlled low flow rate and small dose.

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