Patent ID: 9011376
Filing Date: 2015-04-21
Classification: A61B,A61M

Abstract:
1. A drug delivery device comprising: a drug reservoir chamber containing a substance to be delivered, said drug reservoir chamber in fluid connection with a drug administration element, and a control chamber comprising a battery, said battery comprising a housing, electrodes and an electrolyte, said housing surrounding said electrodes and said electrolyte, said battery being configured such that the combined volume of said electrodes and electrolyte changes upon the discharge of said battery, and a mechanical coupling element coupling said battery to said drug reservoir chamber, the arrangement being such that a change in said combined volume during discharging of said battery displaces a portion of the housing, and said displacement of the housing is mechanically conveyed by said mechanical coupling element to said drug chamber resulting in expulsion of said substance from said drug reservoir chamber towards said drug administration element.