The present invention is directed to a radially expansive device for providing access into a patient's body, kits that contain the radially expansive device, as well as methods for providing minimally invasive access into a patient's body. The radially expansive device may be used in conjunction with...http://www.google.se/patents/US20070032703?utm_source=gb-gplus-sharePatent US20070032703 - Radially expansive surgical instruments for tissue retraction and methods for using the same
