Abstract: A heart valve sizer and sizer cover are provided for determining the size of a heart valve annulus. The valve sizer can include a handle, a shaft extending distally from the handle, a sizing element coupled to the distal end of the shaft, the sizing element being movable between a first retracted position and a second expanded position, and a sizer cover. The sizer cover can be formed from a continuous sheet of material configured to surround at least a portion of the sizing element of the heart valve sizer so as to guard against entanglement of the sizing element with structures of a human heart.

Abstract: An illuminated flying toy with an improved propeller that can bring the flying toy to high altitude. The illuminated flying toy provides a dazzling and fantastic effect when played at night. The illuminated flying toy mainly contains a propeller and a launcher. The propeller contains an outer ring, a transparent base plate, a cover and plural blades. The transparent base plate has an illuminating device thereon, a power device thereon for supplying electric power to the illuminating device. The cover is used for covering topside of the transparent base plate. The plural blades radially extend from edges of the transparent base plate to the outer ring. The launcher is adapted to the transparent base plate for launching the propeller. The illuminating device can alternatively be installed on the blades and controlled by a chip installed on the transparent base plate to display various patterns shown at night.

Abstract: An illuminated flying toy with an improved propeller that can bring the flying toy to high altitude. The illuminated flying toy provides a dazzling and fantastic effect when played at night. The illuminated flying toy mainly contains a propeller and a launcher. The propeller contains an outer ring, a transparent base plate, a cover and plural blades. The transparent base plate has an illuminating device thereon, a power device thereon for supplying electric power to the illuminating device. The cover is used for covering topside of the transparent base plate. The plural blades radially extend from edges of the transparent base plate to the outer ring. The launcher is adapted to the transparent base plate for launching the propeller. The illuminating device can alternatively be installed on the blades and controlled by a chip installed on the transparent base plate to display various patterns shown at night.