Patent ID: 7963924
Filing Date: 2011-06-21
Classification: G09B,G16H

Abstract:
1. A heart simulator exhibiting an output simulated hemodynamic sensor whose temporal pattern reflects a heart characteristic which is optimal when pacing stimulations are optimal, the heart simulator comprising: an input device arranged to provide at least one input parameter; a bidirectional intra-cardiac electrogram path; an electrical heart model in communication with said bidirectional intra-cardiac electrogram path, said electrical heart model arranged to output the simulated intra-cardiac electrogram via the bidirectional intra-cardiac electrogram path responsive to said provided at least one input parameter and the pacing stimulations received via said bidirectional intra-cardiac electrogram path; and a hemodynamic sensor model in communication with said electrical heart model and comprising an atrioventricular (AV) timer, an optimal timer and a QT timer, said hemodynamic sensor model arranged to output a simulated hemodynamic sensor signal, said hemodynamic sensor model arranged to load said AV timer with an optimal AV delay responsive to an atrial event of said electrical heart model, to load said optimal timer with the optimal AV delay plus a QT interval and to load said QT timer with the QT interval, each of the optimal AV delay and the QT interval responsive to the provided at least one input parameter, said hemodynamic sensor model exhibiting a plurality of distinct simulated heart states, and wherein said output simulated hemodynamic sensor signal exhibits a particular predetermined change over time in each of the distinct simulated heart states, and wherein transition between each of the distinct simulated heart states is responsive to one of said AV timer, said optimal timer and said QT timer in relation to events output by said electrical heart model.