Embolization catheter

Abstract

Abstract Translated from Japanese (57)【要約】 【目的】 血管内壁を傷つけないで、血管内壁に付着し た塞栓を効率よく切除することができるカテ−テルを提 供すること。 【構成】 側壁に開口部を有し、先端が有底の管状部材 からなる細長いチュ−ブ内に回転部材が内挿され、該回 転部材の先端側で該チュ−ブの開口部に対応する位置に 塞栓を切除するための切除部材が設けられ、後端側で連 結した回転駆動軸を回転させることによって、前記切除 部材が塞栓を切除するカテ−テルであって、開口部付近 のチュ−ブ外壁を血管内壁方向に移行させるための伸縮 手段と、真空源と接続し、塞栓を排出するためのポ−ト とが設けられた塞栓切除カテ−テルの切除部材が、円筒 状部材の外面に少なくとも１の内面が湾曲空洞化した突 起物が設けられ、その基面に小孔が形成されてなる塞栓 切除カテ−テルである。 (57) [Summary] [Object] To provide a catheter capable of efficiently excising an embolus attached to an inner wall of a blood vessel without damaging the inner wall of the blood vessel. A rotating member is inserted in an elongated tube having a tubular member having an opening on a side wall and a bottom end, and the rotating member is inserted on the distal end side of the rotating member to correspond to the opening of the tube. A cutting member for cutting off the embolus is provided at a position, and the cutting member is a catheter for cutting off the embolus by rotating the rotary drive shaft connected at the rear end side. The cutting member of the embolus excision catheter provided with the expansion and contraction means for moving the outer wall of the tube toward the inner wall of the blood vessel and the port for discharging the embolus is the outer surface of the cylindrical member. Is an embolus-cutting catheter having at least one protrusion having a curved hollow on the inner surface and having a small hole formed on the base surface thereof.

Inventors

• 👤 Makiko Kuwabara
• 👤 真紀子 桑原
• 👤 Yuko Utsunomiya
• 👤 優子 宇都宮
• 👤 Masao Horie
• 👤 政雄 堀江

Bibliographic Details