Abstract: A device for fixing a catheter assembly to a patient has a receiving unit for connection to a skin surface of the patient. A receiving recess is arranged on the receiving unit to receive a portion of the catheter assembly. A closure unit is movable relative to the receiving recess between an opened state, in which the receiving recess is open for receipt and/or removal of the portion of the catheter assembly, and a closed state, in which the receiving recess is at least partially closed by the closure unit. The closure unit is joined non-releasably to the receiving unit. The receiving unit, at least in part, has shape elasticity such that the closure unit is movable between the opened state and the closed state by elastic deformation of the receiving unit. The device can be used in infusion therapy.

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: An injection device (10) for administering a liquid has a barrel (12) with an outlet (20) for the liquid, and a piston (14) arranged in the barrel (12). The piston is designed to force the liquid out from the outlet (20) by displacement into the barrel (12). The injection device (10) has an overpressure protection with a sensor (24) and with an actuator (26). The sensor (24) detects the pressure of the liquid in the barrel (12) directly or indirectly. The actuator (26) prevents a further increase in the pressure of the liquid.

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: An improved medical tunnelling device for introducing and positioning a catheter in a patient with a longitudinally extended hollow tube, which has a distal and proximal open end, is characterized in that the distal end is provided with a rounded, rotationally symmetrical thickening.

Abstract: An injection device (10) for administering a liquid has a barrel (12) with an outlet (20) for the liquid, and a piston (14) arranged in the barrel (12). The piston is designed to force the liquid out from the outlet (20) by displacement into the barrel (12). The injection device (10) has a pressure relief means (16) with a sensor (24) and with an actuator (26). The sensor (24) detects the pressure of the liquid in the barrel (12) directly or indirectly. The actuator (26) prevents a further increase in the pressure of the liquid.

Abstract: A catheter set includes a flexible catheter which is placed over a guide wire according to the Seldinger technique. A clamp is provided which can be laterally applied to the guide wire for tapping electrical potential from the guide wire. The clamp is laterally applied and directly attached to the proximal end of the guide wire when the distal portion of the guide wire is surrounded by the catheter and the tip of the guide wire protrudes from the catheter tip.

Abstract: In a valve device in a connection piece, it is provided that the valve body is configured as a valve flap (20) with a closed surface, which valve flap is mounted in the connection piece via an elastic radial tongue (21) and rests against an annular supporting surface (26) in the closed position, and that the sliding member pivots the valve flap (20) in opening direction about the radial tongue (21) by pressure against its closed surface.

Abstract: A spinal cannula adapted for insertion into an epidural cannula that may be advanced up to the dura. In placing the end of the spinal cannula intrathecally, the dura is pierced by the spinal cannula. Then, a guide wire is advanced to that intrathecal position through the spinal cannula. After removal of the spinal cannula, a spinal catheter is advanced over the guide wire and within the epidural cannula. The epidural cannula imparts the necessary directional stability to the catheter upon its advancement and facilitates the passage through the dura already perforated by the spinal cannula.

Abstract: A coupling assembly for connecting a flexible catheter to the hub cone of a sheath for inserting the catheter into a punctured body cavity consists of a housing having two separable housing halves which jointly form a passage for the catheter and have their patient-proximal front end provided with a tip for insertion into the hub cone of the sheath. In the passage, there is arranged shaped sealing formed as a hollow cylinder of an elastic material, provided as a tube tightly surrounding the catheter and having a thickened head portion. The outer diameter of the head portion is adapted to the outer diameter of the tip of the housing, and the tube is inserted into a widened portion of the passage such that the head portion of the tube abuts against the front face of the tip. Such a shaped sealing acts as a closing stopper which prevents that blood can travel rearward between the separating slits of the housing halves and escape to the outside.