MAGNETIC CIRCUMFERENTIALLY COUPLED IMPLANTABLE PUMP

摘要

A magnetic circumferentially-coupled implantable pump is disclosed herein. A magnetically coupled implantable actuation system utilizes a magneticallyt-coupled drive mechanism configured to generate power for implantable medical devices. One variation generally comprise a drive magnet having a first radius and adapted to rotate about a longitudinal axis when urged, and a driven magnet defining a second radius, which is less than the first radius. This driven magnet is adapted to be implanted within a body rotate about the longitudinal axis when coaxially positioned within a receiving cavity defined by the drive magnet such that magnetic coupling occurs circurnferentially between the driven magnet and the drive magnet. Another variation utilizes elongate bar magnets configured to rotate about a pivot. An optional anchor can be used to secure the implanted driven magnet housing against any rotational forces or moments by securing the housing within the subcutaneous layer.