Pressure-variable valve device and set-pressure adjusting device for the valve device

Abstract

A pressure-variable valve device which is adapted to be embedded in the human body and which is capable of changing a difference in pressure between an inlet-side and an outlet-side duct, the valve device including a rotating member capable of rotating around a central axis in directions to vary a set pressure for a valve, and a rotation control mechanism far controlling the rotation of the rotating member wherein the rotation control mechanism includes permanent magnet structure supported by the valve-device main body as to be capable of making a linear reciprocal translation in directions, and displacement transmission mechanisms, for rotating the rotating member in the direction corresponding to the direction of the translation of the permanent magnet structures. A set-pressure adjusting device includes a magnetic field generating mechanism which generates a magnetic field in which the permanent magnet structures cause the rotating member to rotate in the same direction.