The present invention relates to a catheter for removing foreign material from a blood vessel. The catheter comprises an insertion pipe which is inserted in a blood vessel and has a foreign material discharging pipe branched in one side thereof； a moving pulverizing unit which is inserted in the blood vessel while being accommodated in the insertion pipe and pulverizes foreign material in the blood vessel after being discharged to the outside of the insertion pipe； a foreign material moving net which is coupled with the front end of the moving pulverizing unit, guides the pulverized foreign material into the side of the insertion pipe, and is formed in a wrapper tube shape having a diameter which becomes smaller from the opened front end to the rear end coupled with the moving pulverizing unit； and a pressurizing wire which has one end fixed to an inner wall in the front end of the foreign material moving net, has the other end extended to the outside thereof, and applies pressure to the top end of the foreign material moving net, and changes the shape of the foreign material moving net. The foreign material moving net comprises a feeding net which has an opened top end and feeds the foreign material therein； a flowing net which is connected with the feeding net and provides a path for moving the foreign material； and a discharging net which couples the flowing net with the moving pulverizing unit and discharges the foreign material into the insertion pipe. A coating layer for blocking the leakage of the foreign material to the outside is formed on the surface of the flowing net.본 발명은 혈관 이물질 적출용 카테터에 관한 것으로서, 혈관 내부에 삽입되며 일측에 이물질배출관이 분기되어 형성된 삽입관과； 상기 삽입관 내부에 수용된 상태로 상기 혈관 내부에 삽입되며, 상기 삽입관 외부로 배출된 후 상기 혈관 내부의 이물질을 파쇄하는 이동파쇄부와； 상기 이동파쇄부의 선단측에 결합되어 상기 파쇄된 이물질을 상기 삽입관 측으로 안내하며, 개방된 선단으로부터 상기 이동파쇄부와 결합된 후단으로 갈수록 점차 직경이 줄어드는 나팔관 형태로 구비되는 이물질이동망과； 일단이 상기 이물질이동망의 선단 내측벽에 고정되고, 타단이 외부로 연장형성되어 상기 이물질이동망의 선단에 압력을 작용해 상기 이물질이동망의 형상을 변화시키는 가압와이어를 포함하며, 상기 이물질이동망은, 선단이 개방형성되어 상기
