Thin wall catheter having enhanced torqueability characteristics

(57) The catheter for summary diagnosis (10) has a tubular main part (12), The internal layer (28) which consists of 100% polyamide which has the metal wire sleeve (30) which this tubular main part (12) knit in the upper part, It is formed from the tubular main part (12) which has the external layer (32) formed as a blend of PEBA which has the blend with polyamide, PEBA, and a suitable roentgenopaque filler, or a different durometer. Receive to the stem component (34) directly fixed to this main part (12) to the end of the main part (12) of a pipe of the above, and the soft tip member (40) is attached, This soft tip member (40) is formed from the blend of PEBA, and this PEBA has the hardness in which a catheter (10) comes to have an attereau horse tic tip part. This catheter (10) has the outstanding torque characteristic and pillar-shaped strength property, and offers the comparatively large diameter lumen for a predetermined outer diameter.