The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 31, 2017
Filed:
Apr. 27, 2012
Scott A. Sarkinen, Greenfield, MN (US);
Christopher Ambri, Mesa, AZ (US);
Charles Randall Rogers, Maple Grove, MN (US);
Naveed Alam, Gilbert, AZ (US);
Scott A. Sarkinen, Greenfield, MN (US);
Christopher Ambri, Mesa, AZ (US);
Charles Randall Rogers, Maple Grove, MN (US);
Naveed Alam, Gilbert, AZ (US);
Medtronic, Inc., Minneapolis, MN (US);
Abstract
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.