Cardiac stimulator with lead failure detector and warning...

Details Cardiac stimulator with lead failure detector and warning... Cardiac stimulator with lead failure detector and warning...

A - Human Necessities

61

N

A61N 1/37 (2006.01)

Patent

CA 2284798

A method and apparatus (62) for detecting failure or impending failure of a lead (19) connected to a cardiac stimulator (10) and for providing a warning to a patient or a patient's physician. The impedance of the lead is repeatedly measured (158) and maximum and minimum impedance limits are calculated (160, 164). Repeated impedance measurements are compared with the calculated impedance limits. If the measured impedance falls outside of these impedance limits, an alarm may be given to the patient, or a warning may be given to the patient's physician.

Ce procédé et cet appareil (62) permettent, non seulement de détecter la défaillance avérée ou imminente d'un fil d'électrode (19) connecté à un stimulateur cardiaque, mais également d'en avertir le patient ou son médecin. Le principe est de mesurer de façon répétitive (158) l'impédance du fil d'électrode et de calculer les maxima et minima (160, 164) de l'impédance, et de comparer les mesures d'impédance aux maxima et minima calculés. AInsi, si l'impédance calculée dépasse les limites, il est possible d'avertir le patient ou son médecin.

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