| 摘要 |
A balloon catheter is formed by a heat shrinkable tube. In the method, a rod member is inserted into the shrinkable tube, and parts of the shrinkable tube are heated so that the parts of the shrinkable tube shrink to thereby form end portions of at least one balloon portion while a portion away from the end portions does not shrink. Two end portions of the balloon portion are processed to have a small diameter. Then, the rod member is removed from the shrinkable tube, and a catheter shaft is inserted into the balloon portion to completely pass therethrough. Finally, the two end portions of the balloon portion are fixed onto the catheter shaft. Since the heat shrinkable tube with the constant thickness is used, high quality catheter can be formed without fail.
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