Medical-grade polyvinyl chloride is adopted and stainless steei wire is wound up inside the catheter so it has smooth and round inner and outer walls ,unblocked drainage,which is safe and effective .

• 采用医用级聚氯乙烯塑料、管壁中内绕不锈钢丝制成。具有内外壁光滑、圆整，引流通畅，安全，有效。