| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent the concentration of a tensile load on an adhesion part between a shaft and a distal end tube, when pulling the catheter to a proximal side via the shaft after surgery and remove it to the outside of the body. <P>SOLUTION: The shaft 2 and the distal end tube 4 are formed of synthetic resin tubular members formed by extrusion, and the tubular members are hardened by drawing orientation and crystallization during the extrusion. In a part adjacent to the adhesion part between the shaft 2 and the distal end tube 4, both or either one of them is locally heat-treated to remove or reduce the hardening, or either one tubular member of both having superior elongation characteristic to the other is inserted into the adhesion part 5, to set an elongation part 7. The elongation part 7 set in the catheter is elongated, when the tensile load of its yield point load value or more is impressed from the shaft 2, and mitigates the direct impression of the tensile load to the adhesion part. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
