Scott A. Sarkinen,Christopher Ambri,Charles Randall Rogers,Naveed Alam
申请号：
US13458150
公开号：
US09555188B2
申请日:
2012.04.27
申请国别(地区):
US
年份:
2017
代理人:
摘要：
An implantable infusion device includes a pump, a charge storage unit, and a charging circuit configured to supply current to the charge storage unit from a battery in preparation for actuating the pump. The implantable infusion device also includes a pump actuator circuit configured to actuate the pump using energy from the charge storage unit, and a voltage boost circuit configured to provide a boosted battery voltage generated from the battery. The charging circuit is configured to supply current to the charge storage unit from the voltage boost circuit instead of directly from the battery in response to (i) a comparison of a voltage of the battery with a predetermined threshold and (ii) a comparison of a voltage of the charge storage unit with the voltage of the battery.
