Patent ID: 8172872
Filing Date: 2012-05-08
Classification: A61B

Abstract:
1. A device ( 1 ) for closing an opening ( 2 ) in a septum ( 4 ) in a heart ( 3 ) between two heart chambers, the device including a closing element, comprising a feed catheter ( 5 ) for transvenous introduction of the closing element into an interior portion of the heart ( 3 ) and a puncture cannula ( 6 ) and a tool ( 7 ) or stylet for pushing the closing element out of a distal end of the puncture cannula ( 6 ) after the cannula penetrates an edge or neighboring region of the opening ( 2 ) in the heart septum ( 4 ), at least two individual elements are provided as closing elements having pulling members ( 8 ) or threads, which to close the opening ( 2 ), in a position of use, are pulled together, connected, or knotted, a first screw catheter, ( 10 ) having an interior feed channel ( 9 ) that is inserted into the feed catheter ( 5 ), and at a distal end at least one helical screw ( 11 ; 111 ), configured to be screwed into the edge region of the opening ( 2 ) in the heart septum ( 4 ), the first screw catheter ( 10 ) comprising a helical screw ( 11 ) being selected of such size that the puncture cannula ( 6 ), with an anchor ( 12 ) allocated to the closing element and included therein, is displaced in reference thereto and through its interior cross-section as well as through the at least one helical screw ( 11 ), a second screw catheter ( 110 ) is provided, which fits into the first screw catheter ( 10 ), is pushed through it and is rotational in reference thereto, the first screw catheter ( 10 ) having at least one helical screw ( 11 ) is screwed into the tissue flap ( 14 ) located close to the guiding catheter and subsequently the second screw catheter ( 110 ) is screwed through the first tissue flap ( 14 ) into the second tissue flap ( 15 ), with the lumen or the open interior cross-section of the second screw catheter ( 110 ) and the at least one second helical screw ( 111 ) being selected of such a size that the puncture cannula ( 6 ) and anchor ( 12 ) contained therein and allocated to the closing device ( 1 ) is displaceable in reference thereto through its interior cross-section and through the at least one second helical screw ( 111 ) into an area behind the second tissue flap ( 15 ).