APPARATUS FOR BIOLOGICAL TISSUE TREATMENT UTILIZING HIGH FREQUENCY

Title:

APPARATUS FOR BIOLOGICAL TISSUE TREATMENT UTILIZING HIGH FREQUENCY

Document Type and Number:

WIPO Patent Application WO/1999/001077

Kind Code:

A1

Abstract:

An apparatus for biological tissue treatment utilizing high frequencies, which can dispense with counter electrode plates and treat biological tissues by means of discharge between a discharge electrode and the biological tissues and Joule heat generated by a current flowing locally through the biological tissues. The apparatus is provided with an electromagnetic radiation electrode (1) that radiates a strong electromagnetic wave from the tip thereof when a high-frequency current having at least high-band radio frequencies is supplied thereto. By utilizing not only an arc discharge (10) that takes place at the affected part (9) of a biological tissue (8) by locating the tip of the electrode (1) at such a position as to expose the biological tissue (8) in an electromagnetic field close to the tip of the electrode (1) but also Joule heat that is locally generated by a current flowing into the biological tissue (8) with the tissue (8) serving as the earth, the apparatus gives the biological tissue (8) various treatments, such as vaporization, dissection, and coagulation and hemostasis brought about by thermal denaturation.

Inventors:

WATANABE YASUO (JP)
ZHAO WEI (JP)

Application Number:

PCT/JP1998/002323

Publication Date:

January 14, 1999

Filing Date:

May 27, 1998

Export Citation:

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Assignee:

NIPPON MDM KK (JP)
WATANABE YASUO (JP)
ZHAO WEI (JP)

International Classes:

A61B18/12; A61B18/14; (IPC1-7): A61B17/39

Foreign References:

JPH07255738A	1995-10-09
JPH06191A	1994-01-11
JPH06209952A	1994-08-02

Other References: