US Patent No. 11,027,134

ACTIVE IMPLANTABLE MEDICAL DEVICE SUCH AS A CARDIAC RESYNCHRONISER WITH DYNAMIC ADAPTATION OF AN ATRIOVENTRICULAR DELAY DEPENDING ON A DETECTED AND QUANTIFIED DEGREE OF FUSION


Patent No. 11,027,134
Issue Date June 08, 2021
Title Active Implantable Medical Device Such As A Cardiac Resynchroniser With Dynamic Adaptation Of An Atrioventricular Delay Depending On A Detected And Quantified Degree Of Fusion
Inventorship Paola Milpied, Paris (FR)
Delphine Feuerstein, Issy les Moulineaux (FR)
Assignee Sorin CRM SAS, Clamart (FR)

Claim of US Patent No. 11,027,134

1. An active implantable medical device of the cardiac resynchronizer type, comprising:a pulse generator comprising a memory having instructions stored thereon and a processor configured to execute the instructions to produce pacing pulses intended to be delivered to at least a left ventricle of a patient carrying the active implantable medical device;
at least one detection electrode, the pulse generator configured to detect atrial and ventricular events via signals received from the at least one detection electrode; and
at least one stimulation electrode;
wherein the processor is further configured by the instructions to:
apply an atrioventricular delay (AVD) between a sensed or stimulated atrial event and a delivery of a ventricular pacing pulse;
quantify a degree of fusion between the delivery of a pacing pulse to a cavity, left or right, and a spontaneous contraction of another cavity which is opposite, respectively right or left, and calculate a fusion rate value between two extreme values respectively corresponding to a full capture situation and to a spontaneous depolarization situation of said cavity; and
modify a value of the AVD applied to the delivery of said ventricular pacing pulse, as a function of a comparison made between i) a current value of the fusion rate calculated by processor, and ii) a target value of the fusion rate.