| 摘要 |
PROBLEM TO BE SOLVED: To permit a sufficient fluid flow between a stylet and the inner wall of a Katheter by forming the thin, long and rectangular stylet which is arranged inside the Katheter from a flat base material where the longer measure of a cross section is close to the inner diameter of the Katheter or is smaller than it a little. SOLUTION: A rigidity giving member 502 if formed to have the rectangular cross section where the first measure or a first axis 508 is provided with length being at least about twice as long as that of the second measure or the second axis 506. Then, the rigidity giving member 502 is arranged inside the Katheter 500. For example, the cross section of the ridigity giving member 502 is made to occupy about 16.8% of the inner cavity cross section area of the Katheter 500. Then, configuration is executed so as to permit the first axis 508 to have the most of a bending rigidity in the ridigity giving member 502. A fluid flow are 504 being more than a half of the inner diameter of the Katheter 500 is formed in the Katheter 500 by the rigidity giving member 502. Therefore, activation is executed as the stylet, columnar strength is given to the Katheter 500 and Katheter insertion is assisted. |
