A ventricular sense amplifier (30) for an implantable pulse generator has a digital logic (64) controlling the switching clock of switched capacitor bandpass filter (62) for minimization of transients during the period just preceding, during and following an atrial paced event. The timing is modified to discontinue switching during this period. This ensures that transients occurring as a result of functionally disconnecting and subsequently reconnecting the sensing lead with the sense amplifier are not propagated within the switched capacitor bandpass filter (62). An alternative approach is to increase the clocking rate during the blanked period to ensure that the transients created by the atrial pace or by disconnecting and reconnecting the sensing lead are rapidly processed by the switched capacitor bandpass filter and that processing is completed shortly following the atrial paced event. This alternative approach requires a gate at the sense amplifier output to disable propagation of any transients processed.
申请公布号
WO9110472(A1)
申请公布日期
1991.07.25
申请号
WO1991US00366
申请日期
1991.01.17
申请人
MEDTRONIC, INC.
发明人
PAGLIOLO, JOSEPH, P.;ANDERSON, RUSSELL, E.;WEISPFENNING, RICHARD, F.;BETZOLD, ROBERT, A.