A safety cannula assembly, comprising:
- a cannula configured to puncture human or animal tissue, wherein a distal end section of the cannula is provided with a tip;
- a sliding body including a distal end section including the cannula and a proximal end section including a flexible tube, wherein a flow connection between the tip of the cannula and a proximal end of the flexible tube runs through the sliding body;
- a main body in which the sliding body is displaceable from an operating position where the tip of the cannula is arranged outside of the main body into a safety position where the tip of the cannula is arranged inside the main body, wherein the main body is assembled from at least three main body parts, including
- a first main body part configured sleeve shaped and enveloping a distal end section of the sliding body in the operating position of the sliding body,
- a second main body part adjoining the first main body part in the proximal direction and connected with the first main body part, wherein the second main body part has a U-shaped, L-shaped, C-shaped, or lid-shaped cross section,
- a third main body part joinable with the second main body part to form a hollow body that is open at two opposite faces, wherein the third main body part is configured lid-shaped, C-shaped, L-shaped, or U-shaped and connected by a film hinge with the second main body part or the first main body part;
- an actuation element arranged between the main body and the sliding body and configured to displace the sliding body from the operating position to the safety position;
- and
- a trigger mechanism arranged at the main body and configured to trigger a displacement of the sliding body from the operating position to the safety position, wherein the trigger mechanism includes at least one trigger member loadable with a radially oriented compressive force or a torque by a person using the safety cannula assembly, and at least one locking element displaceable by loading with the pressure force or the torque from a locking position where the locking element engages the sliding body and locks the sliding body in the operating position to a trigger position, where the locking element does not engage the sliding body so that the sliding body moves into the safety position,
- wherein the actuation element is supported at a support surface of the first main body part with a distal end of the actuation element.