Apparatus for and method of terminating a high frequency arrhythmic electric state of a biological tissue

摘要

For terminating a high frequency arrhythmic electric state of a biological tissue an electric signal representative of the present electric state of the biological tissue is obtained. From the electric signal a dominant frequency of the present electric state is determined, and from the dominant frequency it is determined whether the present electric state of the biological tissue is a high frequency arrhythmic electric state. Further, a dominance level indicative of how dominant the dominant frequency is in the high frequency arrhythmic electric state is determined from the electric signal. Depending on the at least one dominant frequency, at least one series of electric pulses at intervals is generated. The electric pulses are applied to the biological tissue starting at a point in time at which the dominance level exceeds a predefined threshold value for the biological tissue being in a determined high frequency arrhythmic electric state.

主权项

1. An apparatus for terminating a high frequency arrhythmic electric state of a biological tissue, the apparatus comprising:
at least one sensor for providing an electric signal representative of the present electric state of the biological tissue; a determination unit
which determines from the electric signal at least one dominant frequency of the present electric state of the biological tissue, andwhich determines from the at least one dominant frequency whether the present electric state of the biological tissue is a high frequency arrhythmic electric state; an electric pulse generator for generating at least one series of electric pulses at intervals depending on the at least one dominant frequency; and at least one electrode connected to the pulse generator for applying the electric pulses to the biological tissue; wherein the determination unit, for terminating a determined high frequency arrhythmic electric state of the biological tissue, determines from the electric signal a dominance level indicative of how dominant the at least one dominant frequency is in the high frequency arrhythmic electric state; and triggers the electric pulse generator to generate the at least one series of electric pulses starting at a point in time at which the dominance level exceeds a predefined threshold value.