| 摘要 |
A dilation device (1) for dilating an opening into a human/animal body part comprises an axially hollow flexible tubular body (2) with a tapered end (2a), forming a guide, which can be inserted in the opening; the tubular body (2) comprises a plurality of coaxial cylindrical elements (3, 4, 5, 6) with at least one tapered end (3a, 4a, 5a, 6a); at least one of these coaxial cylindrical elements (3, 4, 5, 6) being slidably arranged and movable towards the tapered end (2a) of the tubular body (2) to gradually dilate the opening made.
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