Abstract: A valve device for a catheter with a catheter hub. A tubular housing has one end provided with an outer cone for fitting into an inner cone of the catheter hub and has a valve body within acting as a locking member of an axial channel for the passage of an elongate object. The housing is provided with an axially directed protrusion forming a radial space together with the outer surface of the outer cone and has a locking member cooperating with a complementary member at the catheter hub projecting into the space so as to act as a disconnection lock. Thus, a valve device is provided that is suitable for use with a catheter system destined for venous applications according to the Seldinger method, and which ensures a reliable sealing of the extracorporal end of the catheter.

Abstract: A guide probe includes an electrically conductive wire having a straight, projection-free distal end over which a flexible catheter may be advanced into the vena cava. An electric contact element is provided with a clamping bushing that is clampingly set onto the distal end of the wire. The clamping bushing is provided with a connection piece for an ECG lead. This enables a safe positioning and positional adjustment of the guide probe under ECG control.