| 摘要 |
2072584 9109640 PCTABS00005 An angioplasty catheter has a one-piece, flexible elongated tube (12, 12a) in which a hollow proximal section (22, 22a) tapers to form a solid distal core (18, 18a) with a solid cross-section. The core (18, 18a) further tapers to form a safety wire (42, 42a) at the distal end of the catheter. An inflatable balloon (16, 16a) circumscribes the elongated tube (12, 12a) and the interior of the balloon (16, 16a) is in fluid communication with a lumen (26, 26a) defined by the hollow proximal section (22, 22a) of the tube (12, 12a) through at least one aperture (30, 30a) extending through the tube wall (31, 31a) and into the balloon interior (28, 28a). A coil spring (44, 44a) extends distally from the balloon (16, 16a) about the solid distal core (18, 18a) and safety wire (42, 42a), with the safety wire (42, 42a) secured to an end cap (43, 43a) of the coil spring (44, 44a).
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