Abstract: This application relates to methods, systems, and apparatus for replacing native heart valves with prosthetic heart valves and treating valvular insufficiency. In a representative embodiment, a support frame configured to be implanted in a heart valve comprises an annular main body formed by a plurality of angled struts, the main body including a plurality of peaks formed by the intersection of respective adjacent struts. The support frame further comprises one or more leaflet-engaging mechanisms configured to engage leaflets of the heart valve. The support frame can be radially expandable and collapsible.

Abstract: This application relates to methods, systems, and apparatus for replacing native heart valves with prosthetic heart valves and treating valvular insufficiency. In a representative embodiment, a support frame configured to be implanted in a heart valve comprises an annular main body formed by a plurality of angled struts, the main body including a plurality of peaks formed by the intersection of respective adjacent struts. The support frame further comprises one or more leaflet-engaging mechanisms configured to engage leaflets of the heart valve. The support frame can be radially expandable and collapsible.

Abstract: A guard for use with a surgical cutting system. The guard includes a housing and wiring. The housing defines a longitudinal passageway, and is configured for releasable attachment to an instrument handpiece. The wiring is coupled to the housing and includes an electrically conductive wire and an insulative material. The wire defines opposing, first and second ends, with the first end being positioned within the passageway. The insulative material covers the wire apart from the first end such that the first end of the wire is exposed within the passageway. The first end of the wire establishes an electrical connection with a cutting tool shank upon placement within the passageway.

Abstract: A surgical cutting instrument for use with a drive motor, and related system and method, is described. The surgical cutting instrument includes an elongated drive member, a cutting tip secured to the drive member, a non-conductive coupling body adapted for connection to a motor assembly, a housing maintaining the coupling body, and an electrical connector for connection to a stimulating energy source. The electrical connector is in electrical communication with the cutting tip via an electrical pathway.

Abstract: A surgical cutting instrument including an outer tube having a bearing sleeve disposed within a lumen thereof, along with an inner wire assembly extending through the outer tube and the bearing sleeve. A cutting tip is connected to the inner wire assembly distal the outer tube. Conversely, a coupling chuck is connected to a proximal section of the inner wire assembly, with a housing maintaining the outer tube and the coupling chuck. When mounted to a motor, the inner wire assembly is rotated to effectuate a surgical cutting procedure at the cutting tip, with the bearing sleeve supporting the inner wire assembly relative to the outer tube during rotation.

Abstract: A radiation detector (30) for a computed tomography scanner (12) includes a plurality of radiation detector modules (32). Each detector module (32) includes an anti-scatter module, at least one radiation absorbing mask (120) and a detector subassembly module (100). The anti-scatter module (32) includes radiation absorbing anti-scatter plates (80). The detector sub-assembly module (100) includes a substrate (102) and an array (104) of detector elements. The radiation absorbing mask (120) is a photoetched grid, formed of a radiation absorbing material and is positioned between the anti-scatter module (78) and the detector elements of array (104). The strip of the grid, that is parallel to the anti-scatter plates (80), is wider than each anti-scatter plate (80). The detector module (32) is aligned with a spatial focus (74) by inserting the alignment pins (160) into the alignment openings (128) of the radiation absorbing mask (120) and the alignment openings (162) of the detector subassembly module (100).

Abstract: A surgical cutting instrument including an outer tube, inner wire assembly, cutting tip, coupling chuck, and housing. The outer tube includes a lumen extending from a proximal end to a distal end. The inner wire assembly is received within the lumen. Preferably, the outer tube and inner wire assembly form a longitudinally curved segment. The cutting tip is connected to a distal section of the inner wire assembly. The coupling chuck is secured to a proximal section of the inner wire assembly. The housing maintains the outer tube and the coupling chuck. A rotating journal bearing, preferably a rotating-hydrodynamic bearing, is established between the inner wire assembly and the inner surface of the outer tube, allowing nominal rotational speeds of 80,000 RPM. Preferred embodiments of the surgical cutting instrument enhance surgeon visibility, minimize heat build-up, and provide improved stiffness and thermal protection.