| 摘要 |
The present invention relates to minimally invasive surgery techniques. It provides a method for manufacturing an antenna for percutaneous acute hyperthermia microwave applications of the monopole or dipole co-axial type provided with trap, commonly called choke, for blocking the propagation of the backwards reflecting wave towards the generator. The miniaturization of the device allows a use minimally invasive for interstitial hyperthermia in medicine and surgery, in particular for oncology. The method of manufacturing the antenna provides a metal needle ( 1 ) for the introduction of the antenna ( 2,3,4 ) in the target tissue. On the external conductor ( 4 ) of the antenna ( 2 ) a metal collar 6 is connected in a predetermined position; a plastics sheath ( 5 ) is applied in order to cover the external conductor ( 2 ) in the portion between the feed ( 7 ) and the collar 6 ; the inner wall of the metal needle 1 wherein the antenna is inserted is then used for containing and guiding the collar 6 and the sheath 5 ; in particular, the collar 6 being in electrical contact with the inner wall of the metal needle 1 . An antenna is thus obtained with choke of variable length and with miniaturized diameter. A thermocouple can be introduced through the choke that protrudes the directly in the "feed" zone.
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