| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an dilation catheter, in which a liquid medicine is only administered to a desired region and reducing the catheter diameter is possible. <P>SOLUTION: The dilation catheter has a tube body 2 having a first lumen 3 and a second lumen 4 formed therein, and a shrinkable or foldable expanding body 6 provided at the distal end of the tube body 2. This expanding body 6 has a multiple structure consisting of at least the two layers of inner and outer layers 8 and 7 mutually in a close contact with each other. The first lumen 3 communicates with the interior of the inner layer 8. The outer layer 7 is provided with a liquid medicine release function to release the liquid medicine outward after its supply from the layer 7's side contacting the inner layer 8; and the inner and outer layers 8 and 7 are separated from each other by the pressure of the fluid flowing from the second lumen 4 to make this separated space between these two layers communicate with the second lumen 4. <P>COPYRIGHT: (C)2010,JPO&INPIT |
