05919219 is referenced by 368 patents and cites 73 patents.

A method for tightening a surface of a skin with an underlying collagen containing tissue applies RF energy through the skin to underlying collagen tissue without substantially modifying melanocytes and other epithelial cells in the epidermis. A porous membrane is adapted to receive an electrolytic solution and become inflated to substantially conform a contacting exterior surface of the membrane to a skin layer. The membrane includes a cooling lumen for receiving cooling fluid. One or more thermal electrodes positioned in the membrane and transfers thermal energy to the electrolytic solution. The electrolytic solution and cooling fluid creates a reverse thermal gradient from the skin surface to the underlying collagen tissue. A thermal power source is coupled to the thermal electrodes, and a source of electrolytic solution is coupled to the membrane.

Title
Method for controlled contraction of collagen tissue using RF energy
Application Number
435822
Publication Number
5919219
Application Date
August 19, 1997
Publication Date
July 6, 1999
Inventor
Edward W Knowlton
Danville
CA, US
Agent
Wilson Sonsini Goodrich & Rosati
Assignee
Thermage
CA, US
IPC
A61F 2/00
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