IMPROVED CLAMP ASSEMBLY FOR A NON-INVASIVE POSITIONING DEVICE SYSTEM

摘要

An improved clamp assembly for use with a non-invasive ankle distraction positioning system to accommodate arthroscopic procedures provides the ability to apply a wide range of distraction forces to the ankle joint, to hold the ankle in positions above the table in leg positions ranging from nearly horizontal to acutely flexed, and to even position the ankle below the level of the operating table to accommodate special needs and/or positions. The improved clamp assembly includes a base releasably secured to the table and a sleeve releasably secured to the base. The sleeve includes a first high-friction surface on one end adjacent the base that is releasably engagable with a resilient washer and second high-friction surface located on the base. The engagement of the respective high-friction surfaces with the washer and each another allows the distraction system to be fixed in an infinite number of angular positions with respect to the base.