Abstract: A system for implanting a flow modifying device in a heart comprises a flow modifying device comprising a tubular body comprising first and second openings located at first and second ends of the tubular body and a neck positioned between the first opening and the second opening, and a guide catheter comprising a flexible elongate shaft comprising a proximal portion comprising a fitting for receiving an insertion instrument and distal portion comprising an enlarged distal tip to prevent the flexible elongate shaft from passing through the flow modifying device. A guide catheter for cannulating a coronary sinus from a superior vena cava comprises a pre-formed distal portion comprising a proximal straight zone, a proximal curved zone extending along a first curved path, a distal straight zone extending along a straight path and a distal curved zone extending along a second curved path. The guide catheter can have different stiffnesses.

Abstract: A flow modifying apparatus may include a plurality of struts coupled together to form a radially expandable frame having a proximal end and a distal end. The proximal and distal ends may be radially expandable into expanded proximal and distal ends. A reduced diameter portion of the expandable frame may be disposed between the expanded proximal and distal ends and the reduced diameter portion may comprise a fluid flow through passage. A cover may be disposed over at least a portion of the radially expandable frame. The reduced diameter portion modifies fluid flow therethrough immediately upon implantation thereof and forms a pressure gradient between the inflow end and the reduced diameter portion.

Abstract: A flow modifying apparatus may include a plurality of struts coupled together to form a radially expandable frame having a proximal end and a distal end. The proximal and distal ends may be radially expandable into expanded proximal and distal ends. A reduced diameter portion of the expandable frame may be disposed between the expanded proximal and distal ends and the reduced diameter portion may comprise a fluid flow through passage. A cover may be disposed over at least a portion of the radially expandable frame. The reduced diameter portion modifies fluid flow therethrough immediately upon implantation thereof and forms a pressure gradient between the inflow end and the reduced diameter portion.

Abstract: A prosthetic delivery system may include a plurality of concentric shafts and an actuator mechanism for actuating one or more of the concentric shafts. A stop mechanism may be coupled to the actuator mechanism. The stop mechanism prevents advancement or retraction of at least some of the shafts beyond a predetermined position unless the stop mechanism is released. A second stop mechanism may be included in the system for controlling another of the shafts. A plurality of filaments may be coupled to a prosthesis carried by the delivery system and actuation of the filaments may be used to control deployment or retrieval of the prosthesis.

Abstract: Described herein are devices, systems, and methods for modifying blood flow and improving tissue oxygenation in an individual. More specifically, described herein are flow modifying implants, delivery systems, and methods of treatment using flow modifying implants. Also described herein are methods for preventing reperfusion injury in an individual using a flow modifying implant to prevent the reperfusion injury.

Abstract: A flow modifying apparatus may include a plurality of struts coupled together to form a radially expandable frame having a proximal end and a distal end. The proximal and distal ends may be radially expandable into expanded proximal and distal ends. A reduced diameter portion of the expandable frame may be disposed between the expanded proximal and distal ends and the reduced diameter portion may comprise a fluid flow through passage. A cover may be disposed over at least a portion of the radially expandable frame. The reduced diameter portion modifies fluid flow therethrough immediately upon implantation thereof and forms a pressure gradient between the inflow end and the reduced diameter portion.