PURPOSE: A medical needle assembly is provided to prevent damage of treatment and easily supply fluid to surgical operating region. CONSTITUTION: A flexible body(200) combined to the inner diameter of needle detachable and has soft property to be bent. Rear end portion of the flexible body(200) has a flexible body herb(210). A flexible body herb(210) combined to inner side of a needle herb(110) and steadily binds together when flexible body(200) is equipped to an inner diameter of the needle(100). A fluid port(110) combined rear end portion of a needle(100) is connected to inner diameter of a needle(100). A fluid path is formed according to gap between an inner diameter of needle(100) and external diameter of flexible body(200). Fluid is injected to front of the needle.본 발명은 내시경이나 전극체 같은 시술 장치를 신체 내부로 삽입될 수 있도록 안내하는 의료용 니들 결합체에 관한 것으로서 보다 상세하게는, 안내되는 시술 장치의 손상을 방지하고 별도의 니들 삽입 없이 약물 주입이 가능한 의료용 니들 결합체에 관한 것이다.
