Patent ID: 8480735
Filing Date: 2013-07-09
Classification: A61B,A61F,A61H,A61P

Abstract:
1. An implantable tissue expander device for promoting tissue growth in a breast of a human being, the device comprising: an inner membrane; an outer membrane; wherein the inner membrane and the outer membrane define a thin-walled pressure vessel which forms an inner surface and an outer exterior surface of the device respectively; and an inflatable hollow cylindrical vessel in the form of a spiral, encased within the outer membrane and the inner membrane and the vessel being expandable upon inflation thereof between a substantially planar deflated state and an inflated state in the form of a dome having a vertex with the outer membrane positioned external to the dome and the inner membrane positioned internal to the dome, with a concave region being formed below the vertex and external to the inner membrane, said tissue expander being structured to form a void within breast tissue and external to the device when the device is implanted in a breast and inflated.