Abstract: A catheter assembly is provided having a working lumen and a guide. The guide is configured to position a fragmentizing device within the working lumen. The guide is configured to prevent or minimize any unintended movement of a distal section of the fragmentizing device within the working lumen when the distal section of the fragmentizing device is positioned at a distal end of the working lumen.

Abstract: Kidney stone removal system is disclosed having components including a handle mechanism, a nozzle tip, and a guiding device. The handle mechanism employs a trigger that enables control of irrigation and vacuum/suction. Depression of a trigger in the trigger mechanism conveys status of vacuum/suction and irrigation to a user by providing increased resistance at different points of depression. When the trigger is in a home (undepressed) position, irrigation and vacuum/suction are turned off. When the trigger is in a fully depressed position, irrigation and vacuum/suction are turned on. When the trigger is in an intermediate position, irrigation may be turned on, while vacuum/suction remains turned off. The nozzle includes one or more irrigation ports positioned at a distal end of the nozzle and having an irrigation port departure angle of 30 to 60 degrees for directing irrigation fluid forward and laterally from the distal end of the nozzle.

Abstract: A disk drive having spindle resonance tuning and damping for improved disk drive performance. The disk drive has slots in the top cover which reduces rocking resonant frequency of the spindle to allow a previously interacting spindle to no longer interact. A constrained-layer damper can be added over the top cover to dampen existing or interacting frequencies which can further improve performance.

Abstract: Method and apparatus for compensating for different gram loads and actuator arm resonances by positioning z-height of outer actuator arm at an optimum height. Specifically, an actuator arm driven by a closed loop servo motor system for a disc drive system is configured so that the outer upper and lower actuator arms are positioned at an optimum distance, called optimum z-height, from the disc surface. At the optimum z-height position, the resonances of the outer actuator arms are shifted as near as possible to the resonances of the inner actuator arms. At the optimum z-height, the gram loads on the head gimbal assemblies of the inner and outer actuator arms are closest for all z-heights measured. Accordingly, degradation of the performance of the servo motor system will be reduced.

Abstract: A limit stop for defining the extremes of the range of motion of a disc drive actuator, and a magnetic latch which may be incorporated into the limit stop for holding the actuator at one of the extremes of its range of motion. Both the limit stop and limit stop with incorporated magnetic latch allow compliance to be determined based on material selection and dimensions. The magnetic latch includes a flux concentrator mounted on a limit stop and a magnetically permeable striker mounted on the moving portion of the actuator, and derives magnetic force for latching from the permanent magnet in the voice coil motor of the actuator.