Patent ID: 8239026
Filing Date: 2012-08-07
Classification: A61N

Abstract:
1. An implantable medical device comprising: a hermetically sealed housing configured for implantation in a subject; an RF telemetry antenna carried by said housing; an RF telemetry circuit comprising an RF transmitter and receiver connected to said RF antenna via a conductive path; a control circuit connected to said RF telemetry circuit that operates said RF telemetry circuit to transmit and receive signals via said RF antenna; at least one of said RF telemetry circuit and said control circuit comprising an electrical component that is susceptible to damage or operational modification due to interaction with a voltage pulse having a voltage amplitude; and a feedthrough in said hermetically sealed housing for said conductive path, said feedthrough comprising a feedthrough housing and a capacitor element in said feedthrough housing, said capacitor element being connected in series with said RF telemetry circuit and said RF antenna, and said capacitor element comprising a first capacitor plate configuration connected in series with said RF antenna and a second capacitor plate configuration connected in series with said RF telemetry circuit, said capacitor element being dimensioned to block said voltage amplitude of said pulse.