IMPLANTABLE MEDICAL DEVICES HAVING FLEXIBLE ELECTROMAGNETIC INTERFERENCE AND DUMP RESISTOR SHIELDS

摘要

Implantable medical devices comprising electromagnetic interference shields which incorporate a dump resistor and various enhancements to control high voltage arcing. Included are embodiments in which a dump resistor is provided in a flexible shield having first and second conductive layers, where the resistor is provided in a layer between the conductive layers. In additional examples the design of plated through-holes is done to avoid the potential for arcing while maintaining close spacing.

主权项

1. An implantable medical device comprising:
a battery; operational circuitry coupled to the battery including at least a ground reference and an electrical therapy circuit; a conductive housing containing both the battery and the operational circuitry; and a flexible shield separating the battery and operational circuitry from the conductive housing, the shield comprising a first conductive layer, a resistor layer, and a second conductive layer, the resistor layer being disposed between the first and second conductive layers.