Elongated oval battery assembly for canal hearing device

A metal-air battery assembly associated with a canal hearing device, said battery assembly comprising:

• an anode can cylindrically elongated and medially tapered with length (L) along the longitudinal axis of an ear canal when said hearing device is positioned within the ear canal, said anode can having an oval cross section with a long diameter (DL) and short diameter (DS) across its cross section, said length (L) being greater than said short diameter (DS), said anode can laterally comprising a base end having an opening therein forming a cavity within said anode can;
• a cathode cup covering said opening of said anode can, said cathode cup comprising one or more air holes for air access into said battery assembly;
• and
• a sealing element comprising an insulator material inserted in a sealing manner between said base end of said anode can and said cathode cup;
• said cathode cup being concentrically positioned within said base end of said anode can and secured therein partially by an inward ledge within said base end of said anode can.

A hearing device incorporating a battery assembly, said battery assembly comprising:

• a cylindrically elongated metal shell medially tapered with lateral base having an opening therein forming a cavity within said shell,
• a metal base cap covering said opening of said shell, and
• a sealing element made of an electrically insulating material inserted in a sealing manner between said base cap and said shell,
• said battery assembly being elongated with length (L) along the longitudinal axis of an ear canal when said battery assembly is positioned therein, and oval in cross section having a short diameter (DS), said length (L) being greater than said short diameter (DS),
• said battery assembly being cylindrically elongated and having oval cross section resembling the shape of said ear canal to maximize the energy capacity of said battery assembly and to optimize the fit and comfort of said battery assembly within said ear canal.