| 摘要 |
A direct-access blood vessel occlusion device (30) comprises an elongated tubular member (34), and having a balloon member (32) coupled to a distal portion of the tubular member to provide an inflatable balloon (36). The device (30) is ideally suited for occluding a patient's aorta (54) during stopped-heart cardiac procedures. The width or length (L) of the balloon member's outer peripheral contact area, which contacts the inner wall of the blood vessel, is substantially narrower than the balloon member's diameter (D). The area of contact along the inner vessel wall, and the damage caused by such contact, is therefore reduced. The balloon member (32) is preferably made of a low compliance material which reduces the longitudinal and radial expansion of the balloon during the inflation process. In one embodiment, the balloon member (32) comprises multiple pairs of internal ribs (94) which interconnect opposing, inner walls of the balloon member (32) to further reduce expansion. The longitudinal ribs feature can also be used within other types of occlusive devices, including percutaneous catheters used for angioplasty procedures.
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