Patent ID: 6889084

Claim:
An implantable medical device operable to perform a therapeutic and/or monitoring function comprising: a housing having a housing side wall and inner and outer wall surfaces of a predetermined contour enclosing a hermetically sealed chamber; a battery enclosed within said hermetically sealed chamber; and an electronic module powered by said battery having a volumetric form factor dimensioned to fit within said hermetically sealed chamber along with said battery, said electronic module comprising a module substrate board, a plurality of discrete components and at least one integrated circuit IC chip; said module substrate having a predetermined module substrate thickness with a well formed in said module substrate extending from a module substrate surface through at least a portion of said module substrate thickness, and at least one module bonding pad formed on the electronic module substrate surface, said IC chip having a predetermined IC chip substrate thickness, at least one IC bonding pad formed on an exposed IC chip surface, and said IC chip mounted within said well of said electronic module substrate thereby reducing the form factor of the electronic module, and a conductor extending between said module bonding pad and said IC bonding pad.