Adjustment for hydrocephalus shunt valve

An implantable flow control device, comprising:

• a valve having a plurality of pressure settings;
• a connector assembly coupled to the valve and movable with respect to the valve to adjust a pressure setting for the valve;
• an adjustment circuit assembly comprising:
• a setting coil, and
• a resistive element electrically connected to the setting coil, the resistive element coupled to the connector assembly;
• a reading circuit assembly comprising:
• an antenna coil,
• a sensing coil electrically connected to the antenna coil,
• a movable member coupled to the connector assembly and moveable with respect to the sensing coil;
• and
• wherein inducement of current in the setting coil causes the resistive element to move the connector assembly relative to the valve and inducement of current in the antenna coil generates a signal indicative of the pressure setting.

A method of controlling flow of fluid in an implantable device, comprising:

• providing a valve in the device adjustable to a plurality of pressure settings;
• receiving an oscillating electromagnetic field resonant with an adjustment circuit assembly coupled with the valve;
• inducing current in a resistive element of the adjustment circuit assembly;
• adjusting a pressure setting of the device based on the current in the resistive element;
• and
• providing a reading circuit assembly that includes an antenna coil, a sensing coil and a member moveable with respect to the sensing coil, the member configured to alter a resonant frequency of the reading circuit assembly as a function of a position of the member with respect to the sensing coil.