System of implantable devices for monitoring and/or affecting body parameters

A system control unit configured for controlling and monitoring the operation of one or more other implantable addressable controllable devices wherein each of said controllable devices is contained within a sealed elongate housing having an axial dimension of less than 60 mm and a lateral dimension of less than 6 mm suitable for injection into a patient's body and wherein at least one of said devices is configurable as a stimulator to modify at least one parameter of the patient's body and at least one of said devices is configurable as a sensor to sense at least one parameter of the patient's body, said system control unit comprising:

• a control unit housing;
• a data signal transmitter for wireless transmission of command data signals to selectively addressed controllable devices;
• a data signal receiver for wireless reception of status data signals from selectively addressed controllable devices;
• a controller capable of accepting status data signals from said data signal receiver from one or more of said selectively addressed controllable devices operating as sensors and sending addressable command data signals to said data signal transmitter in response thereto to selectively control the operation of one or more of said selectively addressed controllable devices operating as stimulators to thereby operate in a closed loop manner for modifying at least one parameter of the patient's body;
• program storage for specifying the operation of said controller;
• and wherein
• said data signal transmitter, data signal receiver, said controller, and said program storage are disposed within said control unit housing.