suprapubic cannula for puncture of body cavity spaces, with one outer casing and one inner casing, and kit with one cannula and catheter

摘要

suprapubic cannula for puncturing body cavity spaces, with an outer casing and an inner casing, and kit with a cannula and catheter The present invention relates to a cannula (1) for puncturing body cavity spaces with an outer casing ( 2) and an inner casing (3) in longitudinal section with proximal and distal ends. the inner casing is disposed within the outer casing longitudinally and can be displaced and can be rotated in the outer casing such that the longitudinal segment (7) of the inner casing is covered in a first rotational position by means of the outer casing and the longitudinal segments (6,7) are overlapped by the inner and outer casings in a second rotational position. the inner shell has at its distal end a puncture tip (9) which can be fully retracted into the outer shell when the inner shell is in the second rotational position where the inner and outer shell and / or both the handle segments 8a, 8b mutually lock in the second position, preferably indissolubly.