This creation is a kind of soft structure for crossing wire guide of related what,Its structure mainly includes the drainage catheter and a needle body of a pliability,And an accommodating space has been defined in drainage catheter,So that needle body is worn,And be defining a hard tip at what one end,And an at least support division has then been defined on needle body,Its support division system contradicts at drainage catheter and hard tip one end,Thereby,When be pierced into human body in Hou,Hard tip and contact drainage catheter inner wall are supported through support division,So that it will not inside contract the facts,And because using soft drainage catheter,Being pierced into Hou will not allow patient to generate sticky feeling,Another emphasis,Through soft drainage catheter,Also the advantages such as whether be inserted into position correct can be clearly learnt in the case where not drawn needle body.本創作為有關於一種軟質過針導管之結構，其結構主要包括一可撓性之引流導管及一針體，而引流導管內界定有一收容空間，以供針體穿設，且於一端處乃界定一硬尖端，而針體上則界定有至少一抵持部，其抵持部係抵觸引流導管及硬尖端一端處，藉此，當刺入人體內後，透過抵持部抵持硬尖端及接觸引流導管內壁，使其不會發生內縮情事，且因採用軟質的引流導管，刺入後不會讓病人產生不舒服感，另一重點，透過軟質引流導管，亦可在不抽針體的情況下明確得知所插入的位置是否正確等優勢。
