| 摘要 |
<p>Catheter for viewing in a duct, particularly of the human body, comprising an annular lighting fibre optic (2) and an observation fibre optic (8) coaxial to the preceding fibre optic and equipped at its end with a lens (10), characterised in that the lens (10) is fixed to the end of the observation fibre (8) by crimping with the aid of a set of two concentric metal rings (14, 16), the first of which, or central ring (14), is of cylindrical annular shape and is crimped on the lens (10) and the end of the observation fibre (8), and the second (16) of which, also annular, is crimped, at the same longitudinal level as the first ring, on the annular lighting fibre optic (2) arranged around the observation fibre (8), this second ring (16) having a shoulder (18) directed towards the rear of the catheter and intended to hold the outer plastic sheath (12) of the catheter in translation. <IMAGE></p> |
