Abstract: A device for releasably holding and positioning a heart valve prosthesis includes a handle having a first end, a second end and a super elastic shaft interconnecting the first and second ends. A connector is positioned at the second end of the handle and includes a plug portion having a pair of raised members and diametrically opposed guide slots. A low profile pusher-rotator is releasably engaged with the plug portion and includes diametrically opposed guide tabs engaged with the guide slots. A manually flexible release portion of the pusher-rotator includes a pair of engagement members engaged in a snap fit with the raised members. The release portion can be manually distorted to release the engagement members and the raised members for separation of the handle and the pusher-rotator.

Abstract: A heart valve prosthesis which incorporates a substantially permanently implantable abutment structure which is surgically attached to a native heart valve annulus through utilization of a resilient metal substructure having an attachment portion which moves into engagement with a native heart annulus upon being released from a retracted orientation. The system employs a positioning instrument which locates the abutment structure and associated heart valve prosthesis at the proper location for releasing the attachment components. Mechanical heart valve components including an occluder function are removably attached to the abutment structure using sutures, such that the valve function itself may be subsequently replaced.

Abstract: A device for positioning during surgery, a heart valve prosthesis having a general annular configuration with an inside diameter that includes a handle and a introducer/rotator. The handle has a proximal end and a distal end. The introducer/rotator is attached to the distal end of the handle and has a length in operative relates to the inside diameter of the valve prosthesis. The introducer/rotator has a width that is less than the length, which facilitates intercostal insertion through a patient's ribs.