Abstract: An implantable cardiac rhythm management device capable of automatically detecting intrinsic and evoked response of a patient's heart and suitable for use during capture verification. The device of the present invention may operate in an automatic capture verification mode, wherein an electrocardiogram signal of a patient's heart is received and used by the device to determine whether a stimulation pulse evokes a response by the patient's heart. The device suspends the automatic capture verification mode and/or adjust the detection threshold dependent upon detected and/or measured noise, a determined amplitude of evoked response, a determined modulation in the evoked response, or detected and/or measured artifact. Further, the sensing circuit of the rhythm management device of the present invention reduces afterpotentials that result due to delivery of the stimulation pulses.

Abstract: A multi-coplanar, multi-layer capacitor array for use as an RFI filter associated with an electrical connector module having a pattern of pin and socket connections includes a multi-layer board structure of super imposed layers including ground plane layers and capacitor layers interleaved with one another. An array of apertures extend vertically through each of the layers forming a grid having a center-to-center spacing and pattern congruent with the apertures in the desired connector module and are configured to receive the conductor pins. The ground plane layers include a continuous conductive layer on top of a dielectric layer with clearance holes surrounding the apertures so as to be electrically insulated from the connector pins and the capacitors.