Patent ID: 7594902

Claim:
A catheter head for introducing a fluid into an organic tissue, said catheter head comprising: a) a cannula casing comprising a cannula protruding on one side of said cannula casing and a passage channel running through the cannula casing and connected to said cannula; b) a connecting element which includes a fluid supply and can be connected to the cannula casing in such a way that said fluid supply is fluidly connected to said passage channel; c) guide formed jointly by the cannula casing and said connecting element, for positioning and guiding the connecting element relative to the cannula casing; d) a fixing means for detachably fixing the connecting element to the cannula casing; positioned in a rotational position, to the cannula casing in said selected rotational position, wherein the fixing mechanism forms a releasable clamping connection between the cannula casing and the connecting element; wherein said guide exhibits a plurality of selectable, discrete rotational positions about the longitudinal axis of the cannula; e) said passage channel of said cannula casing and said fluid supply of said connecting element are configured such that they are fluidly connected to each other at each of the plurality of selectable, discrete rotational positions; and f) the clamping connection is formed by: at least one elongated opening slit through the connecting element, by which at least one outer region is formed in the connecting element which can be moved towards a center of the connecting element; at least one first clamping element which is arranged on the cannula casing and which includes at least one first barb extending in a circumferential direction at least on a partial region on the cannula casing and directed towards the connecting element; and at least one second clamping element which is arranged on the connecting element and which includes at least one second barb, complementary to said first barb, which extends in the circumferential direction at least on a partial region on the outer region of the connecting element and is directed towards the cannula casing and which engages with the first barb to fix the cannula casing to the connecting element.