Abstract: A catheter set for forming catheter arrangements includes a capillary with a capillary tube and a capillary attachment joined to the capillary tube, a cannula with a cannula tube insertable into the capillary tube, a cannula attachment joined to the cannula tube and connectable to the capillary attachment, a catheter hose advanceable through the capillary tube, a catheter coupling for fastening to the catheter hose, and a fluid admission line with a hose and at least one fluid connector joined to the hose and which is connectable to the capillary attachment. A first catheter arrangement, which has the catheter hose and catheter coupling fastened to the catheter hose, is configured for dispensing anaesthetic via the catheter hose. A second catheter arrangement, which has the capillary and the fluid admission line, is connected to the capillary attachment by the fluid connector and configured for dispensing anaesthetic via the capillary tube.

Abstract: A catheter arrangement for use in peripheral regional anaesthesia includes a capillary with a capillary tube, a capillary attachment joined to the capillary tube, and a catheter hose which is pushed through the capillary attachment into the capillary tube. An end of the catheter hose protrudes from an end of the capillary tube by an axial length. A fixing device includes an actuation element and a clamping element mounted on the capillary attachment. The actuation element is mounted on the capillary attachment movably relative to the capillary attachment and operatively connected to the clamping element in a force-transmitting and/or movement-transmitting manner. The clamping element can be transferred between a clamping configuration, in which an axial mobility of the catheter hose is fixed, and an enabling configuration, in which the action is cancelled and the axial mobility of the catheter hose is enabled.

Abstract: A catheter coupling has a tubing and two jaws extending in the longitudinal direction of the tubing which form a channel having an orifice to accommodate an end section of a catheter when the jaws abut against each other. The jaws are interconnected at a respective jaw end via a jaw joint having a joint axis extending transversely to the tubing. The other jaw end includes a snap-in locking member and a counter snap-in locking member, respectively, interacting therewith to form a snap-in locking arrangement. In the engagement position, the tubing is deformed by at least one jaw deformation component to securely accommodate the catheter. The coupling has at least one inspection window that allows a stop in the tubing for the end section of the catheter to be visually inspected to prevent an end section of the catheter from being introduced into the tubing if it is too short.

Abstract: A catheter coupling has a tubing and two jaws extending in the longitudinal direction of the tubing which form a channel having an orifice to accommodate an end section of a catheter when the jaws abut against each other. The jaws are interconnected at a respective jaw end via a jaw joint having a joint axis extending transversely to the tubing. The other jaw end is in each case provided with a snap-in locking member and a counter snap-in locking member, respectively, interacting therewith to form a snap-in locking arrangement. In the engagement position, the tubing is deformed by at least one jaw deformation component to securely accommodate the catheter end section. The catheter coupling has at least one inspection window in a base body. The inspection window allows a stop in the tubing for the end section of the catheter to be visually inspected. As a result, a catheter coupling is obtained which prevents an end section of the catheter from being introduced into the tubing if said end section is too short.

Abstract: To further improve, under ultrasonic observation, the visibility of a medical instrument with at least one portion of the instrument that can be inserted into body tissue of a patient and has a surface structure reflecting ultrasound waves, wherein the surface structure comprises a number of reflection elements, it is proposed that at least three, and at most nine, reflection elements which are arranged in a defined way in relation to one another define a reflection element group and that the surface structure comprises at least two reflection element groups.