| 摘要 |
A corporeal access tube assembly including a tube segment in which a coil spring is embedded along a portion of the segment. A retention balloon is secured to the tube segment around a portion which does not contain the coil spring. The balloon is inflated into a preformed shape when in operation but its walls are not stretched to any noticeable extent. A bolus on one end of the tube segment includes a stylet pocket in which a stylet is inserted to stretch the balloon axially and decrease its size radially for purposes of insertion and removal of the tube assembly.
|
