| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a microcatheter having a guide wire with a favorable following property and exerting a favorable reaching property to an affected part. <P>SOLUTION: This medical microcatheter is characterized in that, when the short diameter of the cross section of the catheter subjected to a bending deformation at its distal end becomes 98.0% or less of the catheter initial external diameter, a curvature radius ratio (the curvature radius ratio is a ratio of a curvature radius to a catheter external radius) of an inside bending deformation curve is 9.0 or less. This medical microcatheter is characterized in consisting of a resin inner layer extending over the whole length of the catheter, a reinforcing layer existing on the resin inner layer and formed of a linear reinforcing material, and a resin outer layer covering the outside of the reinforcing layer. This medical microcatheter is characterized in that the number of reinforcing material wires per 1mm along the longitudinal direction of the catheter is 10 or more. This medical microcatheter is characterized in that the resin inner layer is composed of a fluorinated resin and the resin outer layer includes a polyamide elastomer. <P>COPYRIGHT: (C)2008,JPO&INPIT |
