PROBLEM TO BE SOLVED: To safely and securely irradiate the lesion part with RF waves in an RF irradiation element for cancer lesions by using RF waves which has a function to necrotize cancer lesions by irradiating the lesion part with the RF waves.SOLUTION: The RF irradiation element has an RF oscillation source 1, a transformer 2 whose secondary side of the output side has a grounded center part arranged in the output side of the RF oscillation source 1, and an electric path between both end parts in the secondary side through the tip end of which the RF waves are irradiated. The irradiation part comprises a first irradiation end 11a and a second irradiation end 11b and a lesion is positioned between both ends. The first and second irradiation ends 11a, 11b have umbrella shape antennas 11d, 11c. Additionally, an irradiation element formed as a probe is provided.COPYRIGHT: (C)2008,JPO&INPIT【課題】RF波を使っての癌病巣の治療照射素子は、RF波を癌病巣に照射することで壊死せしめる機能を持つ。このRF波照射素子において、安全で確実に病巣部への照射を可能にしたい。【解決手段】このRF照射素子は、RF発振源1と、RF発振源の出力例に設けた二次側中点接地のトランス2と、この二次例の両端を介した電気経路の先端に設けた照射部からRF波を送出せしめる。照射部は第1照射端11aと、第2照射端11bより成り、この両端の間に病巣を位置せしめる。第1、第2照射端11a、11bは、傘骨状アンテナ11d、11cを持つ。更にプローブ化した照射素子を提供する。【選択図】図1
