Resources Contact Us Home
Surgical system

Image Number 6 for United States Patent #7211084.

An electrosurgical cutting blade (1) comprises a first electrode (2), a second electrode (3), and an electrical insulator (4) separating the first and second electrodes. The first and second electrodes have dissimilar characteristics (cross-sectional area, thermal conductivity etc.) such that the first electrode (2) is encouraged to become an active electrode and the second electrode (3) is encouraged to become a return electrode. The spacing between the first and second electrodes (between 0.25 mm and 3.0 mm) and the peak voltage supplied to the electrodes (2 and 3) are both selected such that arcing does not occur directly between the electrodes, but between the first electrode and the tissue at the target site. The arrangement is such that, in use, a thermal differential of at least C. is established between the first and second electrodes (2 and 3), such that the second electrode is maintained below a temperature of C. This is achieved either by thermally insulating the second electrode from the first electrode, and/or by transferring heat away from the second electrode, e.g. by conduction, forced cooling, or by means of a heat pipe (27).

  Recently Added Patents
Encoding method, decoding method, encoding device, decoding device, program, and recording medium
Radio communication system, transmission apparatus, reception apparatus, and radio communication method in radio communication
Power generating apparatus of renewable energy type and method of attaching and detaching blade
Controlling a resource demand system
Mirror elements for EUV lithography and production methods therefor
Power management implementation in an optical link
Modular storage system
  Randomly Featured Patents
Cold start white smoke aftertreatment protection
MEMS tunable device
Method for controlling combustion in a multi-cylinder engine, and multi-cylinder engine
Eye viewing device
Implantable device for monitoring changes in analyte concentration
Ceiling fan housing
Method of producing biaxially oriented tubular polyetheretherketone films
Bedding assembly
Film formed from polyethylene-2,6-naphthalate resin, process for producing said film and package using said film
Electrical track and connector assembly