Browse Prior Art Database

PACING SYSTEM ANALYZER WITH PROGRAMMABLE HARDWARE AND SOFTWARE COMPONENTS

IP.com Disclosure Number: IPCOM000124916D
Publication Date: 2005-May-12
Document File: 3 page(s) / 26K

Publishing Venue

The IP.com Prior Art Database

Abstract

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 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 operation for implanting an implantable pacemaker into a patient, the patient's heart is electrically connected to the PSA through implantable sensing-pacing leads. Various pacing modes and/or parameters are evaluated to determine whether the leads are properly placed and to determine a set of suitable pacing parameters. The implantable pacemaker is then connected to the implantable sensing-pacing leads and subcutaneously implanted in the chest area. An external programmer is used to program the pacemaker via telemetry, using the set of suitable pacing parameters determined by using the PSA.

This text was extracted from a Microsoft Word document.
This is the abbreviated version, containing approximately 42% of the total text.

PACING SYSTEM ANALYZER WITH

PROGRAMMABLE HARDWARE AND SOFTWARE COMPONENTS

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 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 operation for implanting an implantable pacemaker into a patient, the patient's heart is electrically connected to the PSA through implantable sensing-pacing leads. Various pacing modes and/or parameters are evaluated to determine whether the leads are properly placed and to determine a set of suitable pacing parameters. The implantable pacemaker is then connected to the implantable sensing-pacing leads and subcutaneously implanted in the chest area. An external programmer is used to program the pacemaker via telemetry, using the set of suitable pacing parameters determined by using the PSA.
            Generally, a PSA includes multiple independently controllable sensing and pacing channels. The PSA provides for a pacing system testing during an operation for implanting a pacemaker having multiple sensing and pacing channels and allows for control and adjustment of pacing parameters. The PSA may also include a display screen to visually present real-time electrograms and event markers. In addition to its

sensing and pacing functions, the PSA may also perform various measurements.  Examples of such measurements include measurements of amplitude and slew rate associated with cardiac depolarizations detected in each sensing and pacing channel, measurements of lead impedance associated with each sensing and pacing channel, and measurements of time intervals between various sensed and paced events. The pacing system testing verifies proper placement of the implantable sensing-pacing leads and effects of the pacing parameters. For example, the lead impedance provides an indication of whether a lead is properly placed, with electrode(s) in the right place for proper sensing and/or efficient delivery of pacing pulses. The various measurements made with different pacing parameters allows for optimization of the pacing parameters based on their effects on the patient. The optimized parameter may be used for the initial programming of the implantable pacemaker.

After a PSA is released to the field for use by physicians and/or other caregivers, device updates are performed, for example, to upgrade the functionality of the PSA, to improve the performance of the PSA based on the field experience, and/or to accommodate pacing system testing for new implantable pacemaker models providing new therapeutic functions. By using field-programmable logic circuit technology...