Method for detecting the myocardial state of the heart and a measuring apparatus for performing this method
AssigneeBiotronik CRM Patent AG
InventorsOleg Anosov, Ildar Khassanov
Life of this patent
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Abstract
A method for detecting the myocardial state of a heart with a measuring apparatus which includes inserting a bipolar cardiological measuring electrode (4) into a heart division (8) at an acute attachment angle (9) on the myocardium (6) of less than 90°, measuring a cardiological stimulation signal such as an IEGM in sequential cardiac cycles, and in addition, determining the positive and negative maximum amplitudes Vp and Vn of the IEGM, ascertaining an asymmetry factor η of the stimulation signal (IEGM) of sequential cardiac cycles according to the equation η=(Vp−|Vn|)/(Vp+|Vn|) and storing the asymmetry factor η of sequential cardiac cycles for analysis.
Claims14
A method for detecting the myocardial state of a heart comprising:
- inserting a bipolar cardiological measuring electrode into a heart division and anchoring a tip of the electrode in a myocardium of the heart at an attachment angle of less than 90°, relative to a myocardial surface;
- measuring a signal of sequential cardiac cycles via intracardiac electrogram to collect measured signals with an implantable processing apparatus;
- determining positive and negative maximum amplitudes Vp and Vn of said signal of sequential cardiac cycles;
- ascertaining an asymmetry factor η of said signal of sequential cardiac cycles according to η=(Vp−|Vn|)/(Vp+|Vn|);
- and
- storing said asymmetry factor η of sequential cardiac cycles for analysis.
A measuring apparatus for detecting the myocardial state of a heart comprising:
- a bipolar cardiological measuring electrode configured to insert into a heart division and configured to anchor a tip of the electrode in a myocardium of the heart at an attachment angle of less than 90°, relative to a myocardial surface;
- an implantable processing apparatus configured to measure a signal of sequential cardiac cycles via intracardiac electrogram to collect measured signals;
- wherein the implantable processing apparatus is configured to:
- determine positive and negative maximum amplitudes Vp and Vn of said signal of sequential cardiac cycles;
- ascertain an asymmetry factor η of said signal of sequential cardiac cycles according to equation η=Vp−|Vn|)(Vp+|Vn|);
- and
- store said asymmetry factor n of sequential cardiac cycles for analysis.
A measuring apparatus for detecting the myocardial state of a heart comprising:
- a bipolar cardiological measuring electrode configured to insert into a heart division and configured to anchor a tip of the electrode in a myocardium of the heart at an attachment angle of less than 90° relative to a myocardial surface;
- an implantable processing apparatus configured to measure a signal of sequential cardiac cycles via intracardiac electrogram to collect measured signals;
- a transmitter coupled with said implantable processing apparatus;
- an external analysis station;
- wherein said transmitter is configured to transmit said measured signals to said external analysis station;
- wherein the external analysis station is configured to:
- determine positive and negative maximum amplitudes Vp and Vn of said signal of sequential cardiac cycles;
- ascertain an asymmetry factor η of said signal of sequential cardiac cycles according to equation η=(Vp−|Vn|)/(Vp+|Vn|) with said implantable processing apparatus;
- and
- store said asymmetry factor η of sequential cardiac cycles for analysis.
Dependencies are inferred from the claim text.