| 摘要 |
An improvement in a balloon catheter (10) comprising a catheter (12) and an inflatable catheter balloon (14) carried by the catheter (12), wherein the catheter balloon (14) includes at least an inner portion (16) and an outer portion (18) over the inner portion (16). The outer portion (18) includes or is formed of a silicone, and the inner portion (16) is less porous to an inflation medium than is the outer portion (18). The balloon catheter (10) c an be configured as a condom catheter (20) for urinary collection, or as a Fole y catheter (22) for a variety of conventional purposes. The inner and outer portions (16 and 18) of the balloon (14) can each be discrete balloons, or o ne of the portions (16 or 18) can be a discrete balloon with the other portion (18 or 16) applied to it.
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