Patent ID: 8753331

Claim:
A positioning tool for controlling a valve rotor with respect to a valve body in an implantable medical device, the device defining a direction of flow from an inlet to an outlet, comprising: a valve body position reader including at least one coil configured to excite a circuit on the valve body and sense energy from the circuit after the circuit is excited to determine an orientation of the direction of flow for the device with respect to the positioning tool; a valve rotor position reader including a magnetic sensor to sense a position of the valve rotor with respect to the positioning tool; a processor coupled to the valve body position reader and the valve rotor position reader and configured to determine a position of the valve rotor with respect to the valve body based on the orientation of the device and the position of the valve rotor with respect to the positioning tool; and a valve rotor position controller adapted to alter the position of the valve rotor with respect to the valve body.