Patent ID: 6496729
Filing Date: 2002-12-17
Classification: A61N

Abstract:
An implantable medical device of the type having an energy source and providing a therapy to a patient's body and/or monitoring a physiologic condition of the body, comprising:a clock source that draws energy from the energy source to develop a clock signal having a clock frequency defining a clock cycle between successive clock signals; timing control means for sequentially defining a sequence of predetermined time periods during which a medical device function is performed including one of delivering a therapy or monitoring physiologic events representative of a physiologic condition and providing a physiologic signal, wherein each predetermined time period extends between a prior predetermined time period and a subsequent predetermined time period; at least one circuit that performs a function related to the provision of a therapy or monitoring a physiologic condition during at least one of the defined predetermined time periods, the circuit requiring a predetermined number of clock signals to perform the function; and means for operating the clock source during the predetermined time period to provide a clock signal at a clock frequency providing the predetermined number clock signals to operate the circuit over the predetermined time period; such that substantially the entire predetermined time period is used to perform the function, wherein the function is completed just prior to the subsequent time period and the number of clock signals applied to the circuit is minimized to conserve energy drawn from the energy source.