Antibacterial PTCA dilatation catheter

Abstract

The invention relates to a dilatation catheter used for treatment, in particular to an antibacterial PTCA dilatation catheter which comprises a sacculus, a far-end tube body part, a near-end tube body part that are sequentially connected and communicated with each other. The antibacterial PTCA dilatation catheter is prepared by the steps of: mixing one, two or three in ciprofloxacin powder, rifampicin powder and metal tungsten powder according to a certain proportion; fully mixing the prepared antibacterial powder with plastic master batch for milling; and finally, precisely extruding and blow molding for shaping, wherein the antibacterial powder accounts for 1-50% of the total weight ratio of the dilatation catheter, and the plastic master batch is prepared by one in poly-fluorinated ethylene propylene, polyfluortetraethylene, polyvinyl chloride, polyethylene, polyurethane, fluoro-polymer and thermoplastic elastomer. The antibacterial PTCA dilatation catheter has simple production technique, realizes long-acting antibacterial function, and greatly improves the safety factor of operation.

Description

technical field [0001] The invention relates to a balloon catheter for interventional therapy, in particular to an antibacterial PTCA balloon catheter. Background technique [0002] During the PTCA operation, the operator inserts a special balloon catheter and stent into the patient's coronary artery through percutaneous puncture of the patient's peripheral artery, expands the stenotic lesion, releases the metal mesh structure stent, and the PTCA balloon catheter is removed from the body . However, due to the particularity of the interventional medical catheter itself, it often causes infection due to bacterial adsorption and other reasons during the treatment process, causing various vascular inflammations, and even causing other fatal complications. For the balloon catheter inserted into the blood vessel, its antibacterial property is very important, and it is directly related to the success or failure of the treatment. [0003] The existing balloon catheters do not have...

AI Technical Summary

Problems solved by technology

This does have the effect of sterilizing and inhibiting the growth of bacteria, and achieves a certain antibacterial effect. However, due to many unpredictable factors during the interventional operation, or the operation itself is very difficult, this requires the PTCA balloon catheter to stay in the body for a long time. It is relatively long, and after the antibacterial material coating of ordinary PTCA balloon catheters is in contact with blood for a long time, the antibacterial power begins to drop significantly, and what’s more, the coating peels off, which makes the antibacterial properties of PTCA balloon catheters Poor persistence, which makes it impossible to achieve its antibacterial purpose, and may even affect the realization of the purpose of diagnosis and treatment

At the same time, the production method of applying the antibacterial coating to the inner and outer surfaces of the pipe body by infiltration must be completed through another process after the pipe is extruded and blow-molded, and the production efficiency is low and the cost is high.

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