Abstract: A device (1) for fastening an electrode (2) in the pacemaker bed before the entry (6) of the electrode (2) into a vein (4) is provided, and includes a sheath (9) having two parts (7) and (8), with a hose (10) extending through their interior. The two parts (7) and (8) of the sheath (9) are profiled at the contacting edges of a common separating point (11) so that they are fixed in reference to one another in the rotational direction until a user pulls them apart beyond the axial extension of the profiling. In this pulled-apart position the parts of the sheath can be rotated in reference to one another under torsion of the hose and subsequently, due to the restoring force of the hose (10), be again guided together axially, which reduces the interior cross-section of the hose and allows a form-fitting grasping the electrode (2) extending therethrough.

Abstract: A surgical electrode which can be used as a temporary lead for cardiac pacing or monitoring purposes has two elongated conductors whose distal ends are provided with spaced-apart poles and are implanted in a single operation by means of a surgical needle which is separably secured to the distal end of one of the conductors. The proximal ends of the conductors are connected to an elongated extension which passes through and outwardly from the thorax to be connected to a pacemaker or to an instrument which makes electrocardiograms. The conductors are insulated from each other and that pole which is nearer to the needle is defined by one or more bare strands which have a zig-zag, undulate, helical and/or other shape allowing the strands to reduce the width of the respective pole during penetration into the heart wall.