Telemetry optimization in an implantable medical device system to achieve equal and maximal distances in bidirectional communications

摘要

Methods for optimizing telemetry in an implantable medical device system are disclosed, with the goal of equating and maximizing the communication distances between devices in the system, such as the external controller and the Implantable Pulse Generator (IPG). The method involves computerized simulation of maximum communication distances in both directions between the two devices while varying at least two parameters of the telemetry circuitry, such as the number of turns in the telemetry coils in the two devices. This results in a simulation output comprising a matrix in which each element comprises the bidirectional distance values. An element is determined for which the distances are equal (or nearly equal) and maximized (or nearly maximized), and the optimal values for the parameters are then chosen on that basis, with the result that the communication distance in one direction equals the communication distance in the other direction, and is maximized.

主权项

1. A method for optimizing wireless communications between first and second devices in an implantable medical device system, the first and second devices having first and second telemetry circuitries respectively, the method comprising:
(a) performing a simulation in a computer system to determine an element, wherein the element comprises:
a first maximum distance of wireless communications transmitted from a first antenna of the first telemetry circuitry and received at a second antenna of the second telemetry circuitry, anda second maximum distance of wireless communications transmitted from the second antenna of the second telemetry circuitry and received at the first antenna of the first telemetry circuitry,wherein the simulation occurs for a first parameter of the first telemetry circuitry and a second parameter of the second telemetry circuitry; (b) repeating step (a) to determine different elements at different values for the first parameter and the second parameter; (c) compiling the elements in a matrix in the computer system, with each element in the matrix comprising a first and second maximum distance for particular first and second parameters; and (d) determining optimal values for the first and second parameters by determining at least one element in the matrix for which the first and second maximum distances in the at least one element are closest to matching and maximized.