Medtronic, Inc.

John P Tardiff

Rajesh V Iyer

Susan A Tettemer

Shawn D Knowles

Michael G Marinkov

A filtered feedthrough assembly having at least one terminal pin therethrough is provided. The feedthrough assembly comprises a ferrule having a cavity therethrough for receiving the terminal pin, and insulating structure having an upper surface. The insulating structure is disposed within the cavity and around the terminal pin for electrically isolating the pin from the ferrule. A capacitor is disposed around the pin and electrically coupled thereto. The capacitor has a lower surface that is disposed proximate the upper surface, and at least one washer is disposed between the upper surface and the lower surface. To attach the capacitor to the insulating structure, a body of epoxy is substantially confined between the upper surface and the lower surface by the ferrule, the insulating structure, the capacitor, and the at least one washer.

Filtered feedthrough assembly and method of manufacture

A method for coupling a capacitor to a feedthrough assembly that includes a ferrule and a terminal pin therethrough is provided. The method comprises dispensing an epoxy onto an outer surface of the feedthrough assembly. A capacitor, which has an opening therethrough for receiving the terminal pin and cooperates therewith to form a cavity, is placed over the ferrule to contact the epoxy. A weight is placed on the capacitor to position it with respect to the terminal pin, and the epoxy is cured.

A method for attaching a capacitor to the feedthrough assembly of a medical device having a terminal pin comprises threading a first washer over the terminal pin, and placing a body of epoxy in contact with the first washer. The capacitor is positioned over the terminal pin such that the first washer and the body of epoxy are between the lower surface of the capacitor and a support surface. The body of epoxy is cured to couple the capacitor to the insulating structure. During curing, the body of epoxy is substantially confined between the upper surface and the lower surface by the ferrule, the insulating structure, the capacitor, and the first washer.

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Corcoran, MN, United States of America

John P Tardiff