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1. WO2004101066 - UTILISATION D'UN SIGNAL D'ACCELEROMETRE POUR AUGMENTER UNE DETECTION D'ARYTHMIE VENTRICULAIRE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

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CLAIMS

1. An implantable medical device, comprising:
a plurality of electrodes detecting electrical signals of a patient;
a sensor sensing mechanical activity of the patient;
a controller controlling therapy delivered by the device to the patient in response to the electrical signals and the mechanical activity.

2. The device of claim 1, wherein the controller coπelates the electrical signals and the mechanical activity and utilizes additional information from the electrical signals and the mechanical activity to determine an aπhythmia in response to the electrical signals and the mechanical activity not being approximately equal.

3. The device of claim 1 , wherein the controller determines that an aπhythmia is present in response to a fast electrical event rate occurring with mechanical activity that is one of absent, low amplitude, and eπatic.

4. The device of claim 1, wherein the mechanical activity coπesponds to cardiac wall displacement.

5. The device of claim 4, further comprising a filter matching a low frequency component of the cardiac wall displacement coπesponding to displacement.

6. The device of claim 1, wherein the sensor is positioned along the left ventricle of the patient.

7. The device of claim 1, further comprising a coronary sinus lead, wherein the sensor is positioned along the coronary sinus lead.

8. The device of claim 1, further comprising a cross-check sensor detecting the mechanical activity, wherein the controller rejects non-cardiac related motion information sensed by the sensor and the cross-check sensor.

9. A method for detecting aπhythmias in an implantable medical device, comprising: detecting electrical signals of a patient;
sensing mechanical activity of the patient;
controlling therapy delivered by the device to the patient in response to the electrical signals and the mechanical activity.

10. The method of claim 9, wherein the controller coπelates the electrical signals and the mechanical activity and utilizes additional information from the electrical signals and the mechanical activity to determine an aπhythmia in response to the electrical signals and the mechanical activity not being approximately equal.

11. The method of claim 9, wherein the controlling comprises determining that an aπhythmia is present in response to a fast electrical event rate occuπmg with mechanical activity that is one of absent, low amplitude, and eπatic.

12. The method of claim 9, wherein the mechanical activity coπesponds to cardiac wall displacement.