Wireless re-charge of an implantable medical device

US10881869B2 · kind B2 · utility

Assignee

• Cardiac Pacemakers, Inc. · US

Inventors

• Keith R. Maile · New Brighton, US
• William J. Linder · Golden Valley, US
• Michael J. Kane · Clinton, US
• Jeffrey E. Stahmann · Ramsey, US
• Jacob M. Ludwig · Isanti, US
• Brendan Early Koop · Ham Lake, US
• Daniel Joseph Landherr · Wyoming, US
• Greg Paul Carpenter · Centerville, US

Key dates

• Filing date: Nov 14, 2017
• Grant date: Jan 5, 2021
• Expiry date: Mar 5, 2039

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05K5/0091
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Near-field energy transmitters for charging a rechargeable power source of an implantable medical device (IMD). In some cases, the transmitter may include an output driver that may drive a transmit coil such that near-field energy is transmitted to the IMD at a determined frequency. In some cases, the IMD may include a receiving coil that may capture the near-field energy and then convert the near-field energy into electrical energy that may be used to recharge the rechargeable power source. Since the rechargeable power source does not have to maintain sufficient energy stores in a single charge for the entire expected life of the IMD, the power source itself and thus the IMD may be made smaller while still meeting device longevity requirements.