| 摘要 |
A body implantable medical device (IMD) includes a first shell and a second shell. The outer surfaces of the first and second shells are fabricated from a material compatible with body fluids. The implantable medical device further includes a battery enclosure defined by a cover and all or a portion of the first shell of the IMD housing. The cover of the battery enclosure is dispos ed between the inner surfaces of the first and second shells. An electrochemica l cell, such as a flat liquid electrolyte battery, is provided in the battery enclosure. Electronic circuitry, which may be supported on a flexible wiring substrate, is provided between the inner surface of the second shell and the cover of the battery enclosure. A hermetic seal is provided between the cove r of the battery enclosure and all or the portion of the first shell. The hermetic seal is preferably a weld joint, such as a butt weld or a tumble we ld joint. The hermetic seal may also be established by a spanked weld joint between the cover and all or a portion of the first shell. The battery enclosure cover may include a coined edge and the hermetic seal is establish ed by a weld joint between the coined edge of the cover and all or a portion of the first shell. The battery enclosure cover may include a coined edge and t he hermetic seal is established by a weld joint between the coined edge of the cover and a peripheral edge along all or the potion of the first shell.</SDO AB>
|
