Abstract: A medical device en-vivo positional determination system using a plurality of ultrasonic transducers for the time-of-flight (TOF) determination of absolute linear and angular positional information of the tool bit tip for the purposes of more accurate hand-held drilling, cutting, etc. on the work piece using digital code modulation schemes and digital signal processing (DSP) to provide a real-time display of the 3-linear position and 2-angular orientation of the tool bit (drill, scalpel).

Abstract: A self-massage apparatus includes opposed first and second rails, each having a first end, an opposed second end, and a length extending therebetween. A plurality of ball assemblies having opposed first and second ends spans the opposed rails and spaces the first and second rails apart from each other by a fixed distance. Each of the ball assemblies is one of an axle, or an axle, a ball mounted on the axle, and spacers flanking the ball, or an axle and balls mounted on the axle.

Abstract: A device holder includes a body having a receiving port and an arm having an engagement member. The engagement member has a plurality of teeth and is pivotally aligned with the receiving port. The device includes a button extending through a surface of the body pivotally coupled with a pawl positioned to releasably engage the teeth of the engagement member. A biasing member is located between an inner wall of the body and the pawl, biasing the pawl away from the inner wall. A lock located in the body and an actuator extending through a surface of the body is also included. The lock is positionable between a locked and an unlocked position.

Abstract: An integrated compact antenna device and method of aiming an electromagnetic signal using the integrated compact antenna device are described. The integrated compact antenna device be a vertically mounted cylinder enclosing an antenna, some electronic circuitry and most of the directional alignment mechanism. During alignment, the cylinder of the ICA rotates to provide azimuth. The cylinder is attached to a fixed base that remains stationary relative to the mounting structure.