Transcatheter atrio-ventricular valve prosthesis

A method for implanting a transcatheter atrio-ventricular valve prosthesis in a connection channel for functional replacement of an atrio-ventricular valve, the connection channel having a circumferential connection channel wall structure, the transcatheter atrio-ventricular valve prosthesis being implanted between an atrial chamber and a ventricular chamber of a heart,

• the transcatheter atrio-ventricular valve prosthesis comprising an inner device and an outer device, and
• the method comprising:
• (a) providing the inner device in an interior of the connection channel,
• the inner device having a circumferential support structure, which is radially expandable, and a valve attached to the circumferential support structure, and
• the circumferential support structure of the inner device having an outer circumferential groove;
• and
• (b) providing the outer device on an exterior of the connection channel, wherein:
• the outer device at least partly extends around the inner device at a radial distance from the inner device, and
• the inner device and the outer device form a securing mechanism for securing the circumferential connection channel wall structure between the inner device and the outer device,
• in step (b), the providing of the outer device comprises:
• forwarding a catheter to the ventricular chamber of the heart;
• forwarding a wire through the catheter to the ventricular chamber;
• guiding the wire around the circumferential connection channel wall structure;
• forwarding a catching wire, provided with a catching mechanism, through the catheter to the ventricular chamber of the heart;
• catching a free end of the wire with the catching mechanism, and
• drawing the free end of the wire into the catheter to thereby allow the wire to form at least a partial loop that is contractible to form the outer device disposed around the circumferential connection channel wall structure;
• and
• in step (a), the providing of the inner device comprises:
• forwarding the inner device into the interior of the connection channel;
• radially expanding the inner device;
• and
• radially contracting the at least partial loop of the outer device in the outer circumferential groove of the inner device to secure the circumferential connection channel wall structure between the inner device and the outer device.