| 摘要 |
The invention relates to a medical device that is in the form of a catheter (3) for supplying fluid to but in particular removing fluid from body cavities. The catheter head (1) on the proximal end (4) comprises an inlet (5) that is provided with one or more sealing and/or blocking elements (6, 7) and that is used to introduce a hollow or Verres needle (18) into the catheter (3). In the region between the sealing or blocking element(s) and the region of the catheter shaft (2) that is introduced into the body, a branch connection (8 ) is arranged, said branch connection being connected to a suction pump arrangement (10) via a branch tube (9 ). Said branch tube (9) leads to a suction valve (11) that enables a fluid to flow in the direction of the suction device, but blocks the flow in the counter direction. The outlet of the suction valve (11) opens into a forked area (12), from which one branch (16) leads to a suction device connection, in particular an injection connection (13) that is embodied, preferably, as a Luer-lock, and the other branch thereof (17) leads to a secretion bag connection (14). A non-return valve (15) that blocks the return flow of the secretion bag is arranged between said branch (17) and the secretion bag connection (14).
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