Kanülenanordnung

摘要

The invention relates to a cannular arrangement (1) with a tubular casing, having a front and a rear end. A slider (6) is arranged in the casing (7), moving between a rear and a front end position. The rear end of a cannula (3) is solidly connected to the slider (6). The front end (4) of said cannula has a tip to pierce biological tissue, extending into the front end of the casing (7) when the slider (6) is located in the rear end position. Means are provided to move the cannula (3) back. A catheter (2) is fixed to the rear end of the casing (7) in the opposite direction to piercing, extending at least partially through the slider (6) into the cannula (3), preferably as far as the front end thereof, when the slider (6) is located in the front end position and the cannula (3) protrudes from the front end of the casing (7). The advantage of the inventive cannular arrangement is that the tip of the catheter can be closed and can be multi-luminal without impeding tightness at any given point.