Abstract: This application relates to methods, systems, and apparatus for replacing native heart valves with prosthetic heart valves and treating valvular insufficiency. In some implementations, a heart valve leaflet clipping mechanism includes a delivery apparatus and clipping arms. The clipping arms are coupled to the delivery apparatus. The clipping arms are movable between an open position and a closed position. The two clipping arms are biased to the closed position. The delivery apparatus is configured to hold the clipping arms in the open position. The delivery apparatus is configured to allow the clipping arms to move to the closed position to engage native heart valve leaflet tissue.

Abstract: A head-mountable display device includes a housing defining a front opening and a rear opening, a display screen disposed in the front opening, a display assembly disposed in the rear opening, a first securement strap coupled to the housing, the first securement strap including a first electronic component, a second securement strap coupled to the housing, the second securement strap including a second electronic component, and a securement band extending between and coupled to the first securement strap and the second securement strap.

Abstract: A split housing pillow block bearing assembly for use with a roll having a shaft. A bearing assembly including a bearing housing split along a parting line passing through the axis of the shaft into an upper housing and a lower housing, the lower housing having a foot portion extending therefrom, the foot portion being offset towards the roll whereby a portion of the bearing housing projects axially outward from the foot portion away from the roll, the lower housing and the upper housing each having an arcuate bearing receiving aperture; a spherical roller bearing positioned within the arcuate bearing receiving apertures, the spherical roller bearing having a inner bore extending therethrough, the inner bore being tapered; and a tapered sleeve mounted on the shaft, the tapered sleeve being received within the bearing inner bore, the foot portion of the bearing being attached to the frame.