Patent ID: 8038641

Claim:
A tool for reading and changing a setting of an implantable valve, the valve having an external cross section and an internal magnetic rotor with an associated magnetic field, the tool comprising: a locator-indicator having opposed upper and lower surfaces, a shaft extending from the upper surface, the shaft having a longitudinal axis oriented substantially perpendicular to the upper surface, the lower surface including a biased recess having an internal cross-section matingly complementary to the external cross section of the valve, the biased recess configured to be positioned in proximity to the valve in a unique rotational orientation about the axis, the axis extending through the rotor; a magnetic indicator rotatably mounted about the axis between the upper and the lower surface, the indicator being configured to rotate under influence of the magnetic field of the rotor of the valve and into orientation thereto; and a magnetic adjustor slidably mountable along the axis onto the shaft, the adjustor having a magnetic field configured to rotate the rotor about the axis in response to rotation of the adjustor about the axis, for changing the setting of the valve.