To provide an electromagnetic interference (EMI) tank filter assembly.
This tank filter is provided for a lead wire of an active medical device (AMD). This tank filter includes a capacitor in parallel with an inductor. The parallel capacitor and inductor are placed in series with the lead wire of the AMD, wherein values of capacitance and inductance are selected such that the tank filter is resonant at a selected frequency. A passageway through the tank filter permits selective slidable passage of a guide wire therethrough for locating the lead wire in an implantable position. The Q of the inductor may be relatively maximized and the Q of the capacitor may be relatively minimized to reduce the overall Q of the tank filter to attenuate current flow through the lead wire along a range of selected frequencies. In a preferred form, the tank filter is integrated into a TIP and/or RING electrode for an active implantable medical device.
FRYSZ CHRISTINE
DABNEY WARREN
BRENDEL RICHARD L
Fumiaki Otsuka
Takaki Nishijima
Hiroyuki Suda