An apparatus for excising and removing a clip or suture attached to a heart valve, the clip or suture forming a tissue bridge in the heart valve, the apparatus comprising: an elongate shaft defining a hollow interior, the elongate shaft having a first end and a second end; a handle attached to the second end of the elongate shaft; an elongate clamping member for engaging and securing the clip or suture, the elongate clamping member being attached to the first end of the elongate shaft, the elongate clamping member having a second end attached to the elongate shaft and a first end; a blade located in the hollow interior of the elongate shaft and being moveable longitudinally in the elongate shaft between the second end of the elongate shaft and the first end of the elongate clamping member, the blade being configured to completely encompass the clip and the tissue bridge for cutting the tissue bridge when the elongate clamping member is engaged to the tissue bridge; a clamping member actuating member attached to the handle, the clamping member actuating member being coupled to the elongate clamping member for actuating the elongate clamping member between an open position and a closed position; a blade actuating member attached to the handle, the blade actuating member being coupled to the blade for actuating the blade from the second end of the elongate shaft to the first end of the elongate clamping member for cutting the tissue bridge; characterized in that the apparatus further comprises guidewire entry ports (12, 78) and guidewire exit ports (14, 80) for receiving guidewires, the guidewire entry ports (12, 78) being formed in the first end of the elongate clamping member and the guidewire exit ports (14, 80) being formed in the second end of the elongate clamping member; the elongate clamping member further comprising guidewire lumina extending therethrough to receive guidewires, wherein when guidewires are introduced into the heart valve adjacent to the tissue bridge, the guidewires may be introduced through the guidewire lumina, the apparatus being configured to be introduced over the guidewires to bring the elongate clamping member into proximity to the tissue bridge. an elongate shaft defining a hollow interior, the elongate shaft having a first end and a second end; a handle attached to the second end of the elongate shaft; an elongate clamping member for engaging and securing the clip or suture, the elongate clamping member being attached to the first end of the elongate shaft, the elongate clamping member having a second end attached to the elongate shaft and a first end; a blade located in the hollow interior of the elongate shaft and being moveable longitudinally in the elongate shaft between the second end of the elongate shaft and the first end of the elongate clamping member, the blade being configured to completely encompass the clip and the tissue bridge for cutting the tissue bridge when the elongate clamping member is engaged to the tissue bridge; a clamping member actuating member attached to the handle, the clamping member actuating member being coupled to the elongate clamping member for actuating the elongate clamping member between an open position and a closed position; a blade actuating member attached to the handle, the blade actuating member being coupled to the blade for actuating the blade from the second end of the elongate shaft to the first end of the elongate clamping member for cutting the tissue bridge; characterized in that the apparatus further comprises guidewire entry ports (12, 78) and guidewire exit ports (14, 80) for receiving guidewires, the guidewire entry ports (12, 78) being formed in the first end of the elongate clamping member and the guidewire exit ports (14, 80) being formed in the second end of the elongate clamping member; the elongate clamping member further comprising guidewire lumina extending therethrough to receive guidewires, wherein when guidewires are introduced into the heart valve adjacent to the tissue bridge, the guidewires may be introduced through the guidewire lumina, the apparatus being configured to be introduced over the guidewires to bring the elongate clamping member into proximity to the tissue bridge.