The present invention relates to a thrombus filter including a sheath, a thrombus capture network with a capture port, a first insertion instrument, and a control knob, an umbrella cloth having a convergent memory shape, a second insertion instrument, An umbrella stand connected to the umbrella cloth, a leakage prevention umbrella whose direction of the umbrella tip coincides with the direction of the capture port and is covered on the outside of the thrombus trapping network, and a leakage prevention umbrella placed in the sheath And a second insertion instrument for insertion / removal, and when capturing a thrombus, the tip of the leakage prevention umbrella is expanded by the thrombus capture network, and after the capture is completed, the thrombus capture network Discloses a thrombus filter that is drawn into a leak-proof umbrella and the tip of the umbrella is converged to the center of the thrombus capture network to completely cover the capture port. By pressing the sheath, the leakage prevention umbrella is pulled into the sheath, and the thrombus capture network is recovered. The thrombus filter effectively collects the calcified block in the blood vessel by the thrombus capture network, and the leak prevention umbrella can effectively prevent the thrombus from leaking in the case of pulling back after the thrombus capture. [Selection] Figure 7本発明は、シースと、捕捉口付きの血栓捕捉網と、第１挿入器具と、制御ノブと、を含む血栓フィルターにおいて、傘先が収束の記憶形状となる傘布と、第２挿入器具及び傘布と接続する傘スタンドと、を含み、傘先の方向が捕捉口の方向と一致し、血栓捕捉網の外側に覆設される漏れ防止傘と、シース内に置かれ、漏れ防止傘を挿入・引抜くための第２挿入器具と、が更に設けられ、血栓を捕捉する場合、漏れ防止傘の傘先は血栓捕捉網により広げられ、捕捉終了後、血栓漏れを防ぐために、血栓捕捉網が漏れ防止傘に引き込み、傘先は血栓捕捉網の中心部に収束され、捕捉口を完全に覆い包むことになる血栓フィルターを開示する。シースを押し付けることにより、漏れ防止傘をシース内に引き込み、血栓捕捉網の回収を実現する。前記血栓フィルターは、血栓捕捉網によって血管中の石灰化ブロックを効果的に回収し、漏れ防止傘は血栓捕捉後の引き戻しの場合に、血栓の漏れを効果的に防ぐことができる。【選択図】図７
