| 摘要 |
Apparatus for visually indicating the degree of inflation of an inflatable cuff surrounding a catheter which is adapted to be inserted into a body passageway. The apparatus comprises a hollow-walled tubular member formed with a plurality of ridges and valleys and is selectively inflatable into a balloon-like shape in response to the pressure of air applied to the cuff by means of a passageway extending into the tubular member. The member is collapsible without occluding the fluid passageway extending into the indicator apparatus and thus without preventing the deflation of the cuff.
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