Pacing system analyzer having three sensing and pacing channels

Abstract

A pacing system analyzer (PSA) having three or more individually controllable sensing and pacing channels provides for testing and measurement during an operation for implanting a pacemaker having three or more sensing and pacing channels. The PSA allows control and adjustment of pacing parameters including cross-channel pacing parameters relating activities between any two of the three or more channels, such as atrioventricular and interventricular pacing delays. The PSA is also capable of, among other things, displaying real-time cardiac signals, measuring amplitude and slew rate of cardiac depolarizations, and measuring lead impedance for each of the sensing and pacing channels, as well as measuring time intervals between cardiac depolarizations in two different sensing and pacing channels. In one embodiment, the PSA includes individually controllable atrial, right ventricular (RV), and left ventricular (LV) sensing and pacing channels.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a Divisional of U.S. application Ser. No. 11 / 124,985, filed May 9, 2005, which is incorporated herein by reference in its entirety.TECHNICAL FIELD[0002]This document generally relates to cardiac rhythm management (CRM) systems and particularly, but not by way of limitation, to a pacing system analyzer (PSA) including three or more independently controlled sensing and pacing channels.BACKGROUND[0003]An implantable pacemaker treats cardiac arrhythmias, heart failure, and / or other cardiovascular disorders by delivering electrical energy to the heart through one or more implantable leads. Before the implantation of the implantable pacemaker, an external (non-implantable) pacing and measuring device known as a pacing system analyzer (PSA) is used to ensure adequate lead placement, maintain basic cardiac functions, and / or evaluate pacing parameters for an initial programming of the implantable pacemaker. In one example of an...

AI Technical Summary

Benefits of technology

[0006]In one embodiment, a PSA includes first, second, and third sensing and pacing channels, a pacing control circuit, a housing, and a user interface. The first, second, and third sensing and pacing channels each include a sensing circuit to sense a cardiac signal indicative of cardiac events and a pacing circuit to deliver pacing pulses. The pacing control circuit controls the delivery of the pacing pulses using a plurality of pacing parameters including user-programmable pacing parameters. The first, second, and third sensing and pacing channels and the pacing control circuit are enclosed in the housing. The user interface is electrically connected to the pacing control circuit and includes a pacing parameter input and a presentation device. The pacing parameter input allows programming of the user-programmable pacing parameters. The presentation device includes a display screen that displays the first, second, and third cardiac signals in real time.

Problems solved by technology

As a consequence, programming an implantable CRM device has become an increasingly complicated task for healthcare professionals.

A known dual-chamber PSA capable of sensing electrograms from and delivering pacing pulses to two cardiac sites may not be able to accommodate desirable tests preparing for the implantation of a tri-chamber pacemaker.

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