Ventricular event filtering for an implantable medical device

• US 7,599,740 B2
• Filed: 05/15/2007
• Issued: 10/06/2009
• Est. Priority Date: 12/21/2000
• Status: Expired due to Fees

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Belk, Paul A., Sheldon, Todd J., Casavant, David A., Stroebel, John C., Betzold, Robert A., Mullen, Thomas J., Hornberger, Steven R., Peterson, Douglas A.
• Primary Examiner(s): Layno; Carl H.
• Assistant Examiner(s): MORALES, JON ERIC C
• Application Number:
  US11/748,659
• Publication Number:
  US 20070213777A1
• Time in Patent Office: 875 Days
• Field of Search: 607/9, 607/14, 607/27, 128/901
• US Class Current: 607/9
• CPC Class Codes: A61N 1/368 comprising more than one electrode co-operating with different heart regions A61N1/3622, A61N1/3627 take precedence
• CPC Class Codes: A61N 1/3688 configured for switching the pacing mode, e.g. from AAI to DDD
• CPC Class Codes: A61N 1/3702 Physiological parameters A61N1/365 takes precedence; evoked response A61N1/371

Abstract

Pacing parameters are provided to address cross talk and intrinsic ventricular events occurring within a predefined blanking period following an atrial event. The parameters are used in conjunction with protocol for minimizing or reducing ventricular pacing, wherein ignoring intrinsic ventricular events during the blanking period might otherwise affect the performance of the protocol.

Claims

1. A method of filtering far field sensing from intrinsic events occurring during an atrial blanking period that follows an atrial event, the method comprising:

monitoring a ventricular channel during the atrial blanking period for a first interval;

classifying a first sensed event on the ventricular channel during the atrial blanking period of the first interval as invalid;

monitoring the ventricular channel during the atrial blanking period of a second interval, subsequent to the first interval; and

reclassifying the first sensed event as valid if the atrial blanking period of the second interval transpires without a sense on the ventricular channel.

2. A method of filtering far field sensing from intrinsic events occurring during an atrial blanking period that follows an atrial event, the method comprising:

monitoring a ventricular channel during the atrial blanking period for a first interval;

classifying a first sensed event on the ventricular channel during the atrial blanking period of the first interval as valid;

monitoring the ventricular channel during the atrial blanking period of a second interval, subsequent to the first interval; and

classifying a second sensed event on the ventricular channel during the atrial blanking period of the second interval as invalid in response to the occurrence and classification of the first sensed event.