Cardiac Pacemakers, Inc.

Karen M Lent

Thomas J Harris

Allan Thomas Koshiol

Joseph E Bange

Paul Jeffrey Holmquist

Scott Thomas Mazar

Jeffrey Allen Von Arx

David J Yonce

William J Linder

Mark D Amundson

Ronald A Balczewski

A telemetry system is presented for enabling radio-frequency (RF) communications between an implantable medical device and an external device in a manner which reduces the power requirements of the implantable device by duty cycling its RF circuitry.

System and method for RF transceiver duty cycling in an implantable medical device

A telemetry system is presented for enabling radio-frequency (RF) communications between an implantable medical device and an external device in a manner which reduces the power requirements of the implantable device by duty cycling its RF circuitry. A wakeup scheme for the implantable device is provided in which the external device transmits a data segment containing a repeating sequence of special wakeup characters in order to establish a communications session with the implantable device. The wakeup scheme may be designed to operate in the context of a handshaking protocol for collision avoidance.

System and method for RF wake-up of implantable medical device

An implantable medical device includes a radio-frequency (RF) telemetry circuit connected to an energy source through a power connection module to obtain power when a user initiates an RF telemetry session. After the session is completed, the power connection module shuts off the at least one portion of the RF telemetry circuit. Power-on examples include a wireless telemetry activation signal received by a low power radio receiver in the implantable device, a physical motion detected by an activity sensor therein, an activation of an inductive telemetry circuit therein, a magnetic field detected by a magnetic field detector therein, and/or a telemetry activation signal detected by a sensing circuit included therein. Power-off examples include a wireless termination signal received by the implantable device, a delay timeout after the session, and/or a signal received by an inductive telemetry circuit in the implantable device.

Methods and apparatuses for implantable medical device telemetry power management

A system and method for transmitting telemetry data from an implantable medical device to an external device. A connection-oriented protocol is used to transmit data at a higher data rate while a burst mode protocol is used to transmit data a lower data rate. The lower data rate may be used for remote communications where the received signal is of lower power.

Adaptive telemetry system and method for an implantable medical device

An implantable medical device includes a radio-frequency (RF) telemetry circuit and a power connection module through which the RF telemetry circuit is connected to an energy source such as a battery. The power connection module connects power from the energy source to at least one portion of the RF telemetry circuit when a user initiates an RF telemetry session. After the RF telemetry session is completed, the power connection module shuts off the at least one portion of the RF telemetry circuit. Power-on examples include a wireless telemetry activation signal received by a low power radio receiver in the implantable device, a physical motion detected by an activity sensor in the implantable device, an activation of an inductive telemetry circuit in the implantable device, a magnetic field detected by a magnetic field detector in the implantable device, and/or a telemetry activation signal detected by a sensing circuit included in the implantable device. Power-off examples include a wireless termination signal received by the implantable device, a delay timeout following the RF telemetry session, and/or a signal received by an inductive telemetry circuit in the implantable device.

A security system for programmable medical devices is provided. Such devices have a variety of features at least some of which are only enabled if a proper password is provided. Different levels of security are provided to protect the patent from inadvertent or unintended reprogramming or from deliberate, but unauthorized efforts to reprogram the device.

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Stillwater, MN, United States of America

Karen M Lent