Patent ID: 8858628

Claim:
A method for promoting human tissue generation, comprising: providing a tissue expansion device, said tissue expansion device comprising an inner membrane, an outer membrane, and an inflatable spiral vessel, encased within the inner membrane and the outer membrane, 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; implanting the tissue expansion device between tissue layers of a patient while the vessel is in the deflated state such that the inner membrane interfaces a region of desired tissue growth; and inflating the vessel to the inflated state such that a convex void is formed between the region of desired tissue growth and the inner membrane and under the entire inner membrane such that the entire tissue expansion device is located outside of the convex void, thereby promoting tissue growth in the region of desired tissue growth.