PROBLEM TO BE SOLVED: To provide a catheter which can correspond to both of right and left coronary arteries by an operation which is not greatly different from that of a conventional catheter for a specified area.SOLUTION: This catheter has a linear first section P1, curved line-form second sections P2 to P4, and a third section P5. In this case, the linear first section P1 constitutes a section from the proximal end of the catheter to the proximal end of the distal end section which constitutes a specified range from the distal end of the catheter. The curved line-form second sections P2 to P4 are connected with the first section, and form a section from the proximal end of the distal end section to a vicinity of the distal end of the catheter. The third section P5 is connected with the second sections, and forms a distal end proximal section including the distal end. The second sections curve in the same direction as the whole, and include a plurality of sections having different radii of curvature. The third section has a returning section P51 which is connected with the distal ends of the second sections, and curves in the opposite direction from the second sections, and a linear section P52 which forms a section from the distal end of the returning section to the distal end of the catheter. The catheter has a shape in which the distal end of the catheter is located in a vicinity of the first section.COPYRIGHT: (C)2007,JPO&INPIT【課題】 従前の特定部位向けカテーテルと大きく異ならない操作により、左右の冠状動脈の両方に対応可能なカテーテルを提供すること。【解決手段】 カテーテルの近位端から、カテーテルの先端から所定の範囲を構成する先端部分の近位端までを構成する直線状の第1の部分P1と、第1の部分に接続され、先端部分の近位端から、カテーテルの先端近傍までを形成する曲線状の第2の部分P2~P4と、第2の部分に接続され、先端を含む先端近傍部分を形成する第3の部分P5とを有し、第2の部分が、全体として同一方向に湾曲していると共に、曲率半径の異なる複数の部分を含み、第3の部分が、第2の部分の遠位端に接続され、第2の部分とは逆方向に湾曲する返し部分P51と、当返し部分の遠位端からカテーテルの先端までを形成する直線部分P52とを有し、カテーテルの先端が、第1の部分の近傍に位置する形状を有する。【選択図】 図1
