Tissue expanders and methods of use

1. A tissue expansion system, comprising:

an implantable tissue expander comprising an expandable chamber completely surrounding a compressed gas reservoir, wherein the expandable chamber is adapted to be a non-elastic chamber with a pre-formed breast shape when the expandable chamber is inflated with a gas from the compressed gas reservoir, wherein the pre-formed breast shape has a lower pole extension; and

an external controller adapted to wirelessly communicate with the implantable tissue expander to control the release of gas from the compressed gas reservoir into the expandable chamber to expand the expandable chamber.

2. The tissue expansion system of claim 1 wherein the expandable chamber comprises a generally flat posterior backing, and wherein the compressed gas reservoir is secured to the generally flat posterior backing.

3. The system of claim 1 wherein the expandable chamber comprises an anterior portion having the pre-formed breast shape with the lower pole extension.

4. The system of claim 3 further comprising a communication component secured to the anterior portion, the communication component adapted to communicate with the external controller.

5. The system of claim 4 wherein the expandable chamber comprises a generally flat posterior backing.

6. The system of claim 5 wherein the compressed gas reservoir is secured to the generally flat posterior backing.

7. The system of claim 5 wherein the generally flat posterior backing is secured to the anterior portion.

8. The system of claim 1 wherein the expandable chamber comprises a posterior backing, and wherein the compressed gas reservoir is secured to the posterior backing.

9. The system of claim 8 wherein the posterior backing is secured to an anterior portion having the pre-formed breast shape with the lower pole extension.

10. The system of claim 9 further comprising a communication component secured to the anterior portion, the communication component adapted to communicate with the external controller.

11. The system of claim 1 wherein the expandable chamber comprises a pressure relief valve adapted to release gas from the expandable chamber.