A tissue expansion device, the device (300) comprising: (a) an expandable compartment (310) adapted for implanting in a body of a subject and (b) a gas source (210) adapted for implanting in a body of a subject and operably connected to said expandable compartment for inflation thereof by transfer of a gas thereto.Linvention concerne un dispositif dexpansion tissulaire, comprenant : (a) un compartiment expansible permettant limplantation dun corps chez un sujet et (b) une source de gaz permettant limplantation dun corps chez un sujet, reliée opérationnelle à ce compartiment aux fins de gonflage par transfert de gaz.
