Cardiac Pacemakers, Inc.

Daniel Joseph Landherr

Keith R Maile

Niharika Varanasi

Jeffrey E Stahmann

William J Linder

Michael John Kane

Benjamin J Haasl

Brendan Early Koop

Masoud Ameri

Jacob M Ludwig

Greg Paul Carpenter

Brian D Allen

Jason Lahr

Ron A Balczewski

David A Chizek

John E Hansen

David P Stieper

James Blilie

Thao N Nguyen

Katherine Hauwiller

An implantable medical device may include each of a conductive canister, a printed circuit board assembly (PCBA), and a header. A feedthrough and ferrule couple the interior of the canister, where the PCBA is, to one or more elements contained in the header such as an antenna and/or a port for coupling to a lead. The ferrule may be directly attached to the conductive canister and the electronic circuit board. The electronic circuit board carries an RF transmitter for telemetry purposes, and has an RF ground plane layer therein. The ferrule is capacitively coupled to the RF ground plane the PCBA, and has a size and/or shape relative to the RF ground plane that provides sufficient capacitance to offer an improved RF ground plane path to the conductive canister at a desired telemetry frequency.

Implantable medical device with feedthrough antenna ground structure

A capacitively loaded loop antenna for an implantable medical device is disclosed comprising a feed extending from a conductive surface of an implantable housing, a radiating element having a cross section larger than the feed, and a return coupling the radiating element to a conductive surface of the implantable housing. The radiating element can have a height above the top surface of the implantable housing, creating a capacitance between the radiating element and the conductive surface of the implantable housing configured to counteract the inductance of the capacitively loaded loop antenna.

Capacitively loaded implantable loop antenna

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.

Wireless re-charge of an implantable medical device

Implantable medical device (IMD) such as leadless cardiac pacemakers may include a rechargeable power source. In some cases, the IMD may include a plurality of receiving coils that may capture a non-radiative near-field energy and then convert the near-field energy into electrical energy that may be used to recharge the rechargeable power source. Accordingly, 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 expectations.

Implantable medical device with recharge coil

An implantable medical device can include a device housing including a circuitry module and a header including a header core defining a bore configured to receive a distal end of a lead, an antenna, and a header shell disposed around the header core and the antenna. The antenna can be a closed loop antenna and arranged such that the antenna is positioned within two planes to maximize the area within the closed loop to increase the radiation characteristics of the antenna.

Bent loop antenna for implantable medical devices

In general, techniques are described for wirelessly transferring information using an implantable antenna. In one example, an apparatus includes an implantable medical device that includes a housing including an implantable telemetry circuit. The apparatus includes a dielectric compartment, mechanically coupled to the housing and including first and second substantially parallel face portions, and a third face portion extending between the first and second face portions, and an antenna assembly configured to be mechanically attached to the dielectric compartment and configured to be electrically coupled to the implantable telemetry circuit, the antenna assembly includes a spiral conductor comprising first, second, and third spiral conductor portions that extend adjacent the first, second, and third face portions, respectively, of the dielectric compartment, where the first, second, and third spiral conductor portions define an interior region, and where at least a portion of the third spiral conductor portion extends inwardly into the interior region.

Antennas for implantable medical devices

Growing community of inventors

Wyoming, MN, United States of America

Daniel Joseph Landherr