Patent ID: 8838244
Filing Date: 2014-09-16
Classification: A61N

Abstract:
1. A device comprising: a battery; a first circuit for supplying an electric signal to a heart; a second circuit for monitoring a voltage of the battery and converting the voltage into a digital signal; an antenna for receiving a wireless signal transmitted from an external device; a rectifying and smoothing circuit converting the wireless signal received by the antenna into direct current; a charge circuit for generating current based on an electric power of the rectifying and smoothing circuit and charging the battery, the charge circuit comprising a constant current source and a switch circuit; a charge control circuit for monitoring the voltage of the battery; and a modulation circuit for modulating the digital signal, the modulation circuit connected to the second circuit and the antenna, wherein the modulated wireless signal is transmitted to the external device through the antenna, wherein the battery is connected to the first circuit, the second circuit, the charge circuit, and the charge control circuit, wherein a first terminal of the switch circuit is electrically connected to the constant current source, wherein a second terminal of the switch circuit is electrically connected to the battery, wherein the charge control circuit outputs low to a third terminal of the switch circuit so that the first terminal of the switch circuit is electrically connected to the second terminal of the switch circuit when the battery is not overcharged, wherein the charge control circuit outputs high to the third terminal of the switch circuit so that the first terminal of the switch circuit is not electrically connected to the second terminal of the switch circuit when the battery is overcharged, and wherein the voltage of the battery is confirmed by transmitting the modulated signal through the antenna.