9/29/2007 11:25:27 P.M. Pacific Daylight Time

Hey Kent!

The following US Patent apps do shed some light on the matter, as the device in question was originally intended for cancer therapy, the ignition of the saline solution being an "accident" of sorts,

1 US20050251233 System and method for RF-induced hyperthermia

An embodiment of a non-invasive RF system for inducing hyperthermia in a target area, and a corresponding non-invasive RF method for inducing hyperthermia in a target area are provided. The system includes an RF transmitter and transmiss...

2 US20060190063 Enhanced systems and methods for RF-induced hyperthermia

A method of inducing hyperthermia in at least a portion of a target area--e.g., a tumor or a portion of a tumor or targeted cancerous cells--is provided. Targeted RF absorption enhancers, e.g., antibodies bound to RF absorbing particles,...

3 US20050251234 Systems and methods for RF-induced hyperthermia using biological cells and nanoparticles as RF enhancer carriers

A method of inducing hyperthermia in at least a portion of a target area--e.g., a tumor or a portion of a tumor or targeted cancerous cells--is provided. Targeted RF absorption enhancers, e.g., tumor infiltrating lymphocytes (TILs) conta...

4 US20050273143 Systems and methods for combined RF-induced hyperthermia and radioimmunotherapy

A combined radiotherapy and hyperthermia therapy is provided, including inducing hyperthermia in at least a portion of a target area--e.g., a tumor or a portion of a tumor or targeted cancerous cells--is provided. Biomolecules labeled wi...

The frequencies are in the megahertz range, with a square wave modulation in the 300-400 Hz range, which might provide a key to the heating.

Hope this helps,