Abstract: Catapult ankles and related methods are disclosed. An example ankle prosthesis for operation in a swing phase and in a stance phase includes a motor, wherein the motor is configured to store energy with a first spring during the swing phase and plantarflex the ankle prosthesis during a push off portion of the stance phase.

Abstract: An intraperitoneal cleaner to allow cleaning of a scope lens used in minimally invasive surgery is presented. Using existing super elastic alloys in combination with a standard spring, a purely mechanical cleaning action is provided, eliminating the reservoirs, vacuum pumps, or extra ports found in other cleaner designs. The scope body is inserted into the device prior to commencement of surgery, and the wiper of the cleaner rests just outside of the field of view of the lens of the scope. When debris or fluid obscures the field of view, a spring in the handle is compressed, allowing the cleaner to flex and provide a cleaning action. A cordless laparoscopic light source using LEDs and a pair of aspherical condensing lenses to focus the resulting light to a usable point is presented. By using battery power, the entire device is considerably smaller than the current xenon light source standard.