Abstract: In some embodiments, a system for scoring human endocardium tissue may include a first conduit and an activation system. The first conduit may include a first opening, a second opening, and a cutting device. The first opening may be positioned at a proximal end of the first conduit. The second opening may extend from adjacent to a closed distal end portion of the first conduit. The cutting device, when activated, may cut through a portion of a depth of endocardium tissue positioned adjacent the second opening. The cutting device may selectively cut or score the endocardium to a specified depth and length in the endocardium of a left ventricle of a human heart.

Abstract: In some embodiments, a method of ameliorating diastolic dysfunction may include positioning at least a distal end of a system for cutting a trabeculae carneae in a left ventricle of a human heart. The system may include an elongated member, a grip, an engaging portion, and a cutting device. A second end of the engaging portion may turn in upon the engaging portion towards a first end of the engaging portion while still allowing trabeculae carneae to enter through an opening between the first and second ends. The cutting device may be positioned within an inner diameter of the engaging portion. The method may include positioning at least one trabeculae carneae in the inner diameter of the engaging portion. The method may include severing the at least one trabeculae carneae. The method may include increasing left ventricular compliance of the human heart.

Abstract: In some embodiments, a method of ameliorating diastolic dysfunction may include positioning at least a distal end of a system for cutting a trabeculae carneae in a left ventricle of a human heart. The system may include an elongated member, a grip, an engaging portion, and a cutting device. A second end of the engaging portion may turn in upon the engaging portion towards a first end of the engaging portion while still allowing trabeculae carneae to enter through an opening between the first and second ends. The cutting device may be positioned within an inner diameter of the engaging portion. The method may include positioning at least one trabeculae carneae in the inner diameter of the engaging portion. The method may include severing the at least one trabeculae carneae. The method may include increasing left ventricular compliance of the human heart.

Abstract: In some embodiments, a system for scoring human endocardium tissue may include a first conduit and an activation system. The first conduit may include a first opening, a second opening, and a cutting device. The first opening may be positioned at a proximal end of the first conduit. The second opening may extend from adjacent to a closed distal end portion of the first conduit. The cutting device, when activated, may cut through a portion of a depth of endocardium tissue positioned adjacent the second opening. The cutting device may selectively cut or score the endocardium to a specified depth and length in the endocardium of a left ventricle of a human heart.

Abstract: Certain embodiments are directed to methods and apparatus for ultrafast MWP-OCT that is based on precise control of the OCT tunable-laser source combined with synchronization of the photothermal excitation laser emission. The invention is generally related to physics, biology, medicine, and imaging. In certain embodiments the field of the invention is directed to multiple wavelength photothermal optical coherence tomography.

Abstract: A method and a system for Uniform Frequency Sample Clocking to directly sample the OCT signal with a temporally-non-linear sampling clock derived from a k-space wavemeter on the external sample clock input port of a digitizer.