Abstract: An implantable fluid pump system is disclosed for supporting or initiating flow inside a hollow organ through which fluid circulates, in particular the heart. The fluid pump system comprises an intracardiac module, which includes two separate fluid channels, each of which possesses an intracardiac fluid channel opening and, located opposite the latter, an extracardiac fluid channel opening, a fastening module, which provides a joining contour for purposes of joining onto the intracardiac module in a fluid-tight manner, and a fastening structure for purposes of intracorporeal fastening onto the hollow organ, and a pump module, which can be mounted in a releasable manner directly or indirectly onto the intracardiac module, and can be attached in a fluid-tight manner to the extracardiac fluid channel openings in order to produce a fluid-tight connection of both fluid channels.

Abstract: An implantable fluid pump system is disclosed for supporting or initiating flow inside a hollow organ through which fluid circulates, in particular the heart. The fluid pump system comprises an intracardiac module, which includes two separate fluid channels, each of which possesses an intracardiac fluid channel opening and, located opposite the latter, an extracardiac fluid channel opening, a fastening module, which provides a joining contour for purposes of joining onto the intracardiac module in a fluid-tight manner, and a fastening structure for purposes of intracorporeal fastening onto the hollow organ, and a pump module, which can be mounted in a releasable manner directly or indirectly onto the intracardiac module, and can be attached in a fluid-tight manner to the extracardiac fluid channel openings in order to produce a fluid-tight connection of both fluid channels.

Abstract: The catheter to be inserted into a vein (4) of the blood circulation, comprising a conduit (7) with at least one expandable anchoring element (13) at its distal end (8) for anchoring in the vein wall, and a tube-shaped jacket (sheet 14) that is pushed onto the conduit (7) and can be at least partially withdrawn in a proximal direction once the conduit (7) has been inserted into the vein (4), thereby releasing the at least one anchoring element (13), so that it can expand. The conduit (7) comprises a bottleneck (17) at the distal end of its lumen (8) and the catheter comprises a tube-shaped element (pusher 15) to be pushed onto a guiding wire (11). The front end of said element bearing against the bottleneck.