| abstract |
(57) [Summary] (With correction) [PROBLEMS] For a battery implanted inside a human body or the like, the outer shape of the battery has not been designed to be suitable for the shape of the body to be implanted. For this reason, transplantation into the human body was not easy. Thus, there is provided a primary or secondary chemical battery housed in a casing having opposed main side walls having contours. A lithium battery is used for a medical device for transplantation such as a defibrillator and a drag pump, and a rechargeable lithium ion secondary battery is used as a power source for a hearing aid, an artificial heart and the like. Conventionally, these battery cases have been formed only with flat side walls. By forming the side walls into a curved case shape with a defined curvature, implantation into previously restricted body parts was facilitated. |