| 摘要 |
A balloon cover (1) for contracting a once expanded balloon (4) in a balloon catheter which is provided with a compressible cover (2) as an inner tube to receive the balloon (4) and with an outer sheath (3) as an outer tube to receive the compressible cover (2) is provided. An inner diameter of the compressible cover (2) has a diameter such that the expanded balloon (4) is contracted therein to make a smaller profile, and an inner diameter of the outer sheath (3) is smaller than an outer diameter of said compressible cover (2). The balloon cover (1) comprises a primary reducing function that the compressible cover (2) receives the once expanded balloon (4) therein, and a secondary reducing function that the outer sheath (3) receives the compressible cover (2) and decreases the diameter of the compressible cover (2) including the balloon (4) therein. |
