Patent Document ID: 20140058467
Application ID: 13948790
Patent Flag: 0

Claim One:
1. An implantable medical device for use in a body, comprising: a battery; a battery monitoring circuit coupled to the battery, the battery monitoring circuit configured to monitor an energy level of the battery and produce a battery status parameter indicative of the energy level; a neural stimulation circuit configured to deliver neural stimulation for modulating neural activities; a control circuit coupled to the battery monitoring circuit and the neural stimulation circuit, the control circuit including: a power controller configured to set a current power mode of the implantable medical device to a first reduced-power operation mode of a plurality of power modes in response to the battery status parameter indicating that the energy level has fallen below a first energy level threshold of a plurality of energy level thresholds; and a neural stimulation controller configured to control the delivery of the neural stimulation using neural stimulation parameters and to adjust one or more parameters of the neural stimulation parameters within the first reduced-power operation mode such that an intensity of the neural stimulation is reduced within the first reduced-power operation mode according to a specified power reduction schedule.