RETENTION BOLSTER FOR CORPOREAL ACCESS TUBE ASSEMBLY

摘要

This invention is a corporeal access tube assembly (10) including a tube segment (41) in which a coil spring (42) is embedded along a portion of the segment. A retention balloon (20) is secured to the tube segment around a portion which does not contain the spring coil. The balloon is inflated when in operation but its walls are not stretched to any noticeable extent. The tube segment extends through a split external bolster (21) which opens to permit positioning of the tube segment and closes to clamp the tube segment in place. A gauging system on the tube segment permits precise positioning of the bolster.