| 摘要 |
<p>A device for dissipating electrical energy from a surgical device is provided. The electrical energy is induced on the surgical device when a charge-inducing instrument, e.g. an unipolar electrocautery device, is energized in proximity thereto. The induced energy is dissipated by conveying the energy along an electrically conductive element 34 to an energy dissipation region. In a preferred embodiment of the invention, the surgical device is a cannula 26 fabricated from a dielectric material, e.g., fiberglass, and induced electrical energy is dissipated by contacting the energy dissipation 36 region, e.g., a conductive band 36 around the periphery of the cannula, with the body wall of the patient. An alternative means for grounding is achieved by providing an electrical fitting on a cannula housing which remains external to the patient's body, and securing a grounding wire thereto. <IMAGE></p> |
