received by the International Bureau on 08 January 2018 (08.01.2018)

1. Apparatus (1 ) for determining the abnormal electrical potential points from the ventricular myocardium that requires ablation, comprising: a module (2) for amplification and analogue filtering, an analogue - digital signal converter (5), a hardware device (6), such as a computer, microcontroller or any other equivalent device, for the digital processing of data, by means of a software (7), of the signals received from an EKG device (3) and from a catheter (4), a display (8) for displaying the signals received from the EKG device (3) and from the catheter (4), as well as the abnormal electrical potentials from the ventricular myocardium, identified by the software (7), characterized in that the software (7) is suitable for analyzing the signal received from the catheter, respectively the amplitude, duration,

synchronization with the QRS complex of the.signal coming from the EKG surface electrodes, as well as the spectral fragmentation (FFT analysis).

2. Apparatus (1 ), according to claim 1 , characterized in that it further comprises a device (9) for generating an acoustic or luminous visual signal when the catheter reaches a abnormal electrical potential from the ventricular myocardium.

3. Apparatus (1 ), according to claim 1 or 2, characterized in that it may connect to an EKG device (3) and a catheter (4).

4. Apparatus (1 ), according to claim 1 or 2, characterized in that it comprises a built- in EKG device (3) and a connection for a catheter (4).

5. Apparatus (1 ) according to claim 1 , characterized in that the software (7) is suitable for activating the exclusion condition for the eventual artifact signals, the signal being considered normal and the other search intervals being automatically ignored if the level of the catheter signal exceeds the first voltage threshold, in a search interval of up to 50 ms after the beginning of the QRS complex, the Q point respectively, and by that it activates the condition for the detection of the abnormal signal, if the level of the catheter signal has an amplitude over the second voltage threshold that was established, and is situated in a search interval of up to 50 ms before and up to 100 ms after the end of the QRS complex, the S point respectively.

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6. Apparatus (1), according to claim 5, characterized in that the reference for the search intervals for abnormal signals is adjustable and is singularized for each case.

7. Use of the apparatus (1 ) according to any of the previous claims, in the ventricular myocardium ablation procedure, the abnormal electrical potential points detected by the apparatus, being able to be simultaneously or latterly ablated.

8. Use of the apparatus (1 ) according to any of claims 1-6, together with a 2D or 3D mapping system (10), on cardiac level, or with any system that allows the

cartography and highlighting of the used signals.

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