Microwave radiator for warming therapy
AssigneeTokyo Keiki Co., Ltd.
InventorsKoichi Ito, Motomu Matsunaga, Satoru Kurokawa, Koji Ueno
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Abstract
This invention relates to a microwave radiator for warming therapy inserted into a human body to cure focuses of the body such as tumors. It has a first and second high-frequency coaxial cable. The second high-frequency coaxial cable has an inner conductor and a plurality of ring conductors disposed at the outer periphery of the inner conductor via a dielectric. The second high-frequency coaxial cable is inserted into the focuses of the body, and warming therapy can be conducted using radiated electromagnetic waves.
Claims17
A microwave radiator having an axially extending length, for therapeutic treatment, said radiator comprising:
- an inner conductor extending along the axial length of said radiator;
- a first high frequency coaxial cable, comprising an outer conductor and a portion of said inner conductor, said outer conductor being coaxially disposed about said inner conductor and extending along said portion of said inner conductor;
- a dielectric disposed between said inner conductor and said outer conductor and extending along the entire length of said inner conductor;
- and
- a second high frequency coaxial cable adjacent to said first coaxial cable, said second coaxial cable having spaced conductive rings disposed around said dielectric along a remaining portion of said inner conductor, whereby electromagnetic radiation may flow in between said rings, in a direction generally perpendicular to said axial length of said inner conductor.
A microwave radiator having an axially extending length, for therapeutic treatment, said radiator comprising:
- an inner conductor extending along the axial length of said radiator;
- a first high frequency coaxial cable, comprising an outer conductor and a portion of said inner conductor, said outer conductor being coaxially disposed about said inner conductor and extending along said portion of said inner conductor;
- a dielectric disposed between said inner conductor and said outer conductor and extending along the entire length of said inner conductor;
- a second high frequency coaxial cable adjacent to said first coaxial cable, said second coaxial cable having spaced conductive rings disposed around said dielectric along a remaining portion of said inner conductor, whereby electromagnetic radiation may flow in between said rings in a direction generally perpendicular to the axial direction of said inner conductor;
- and
- an end cap disposed at the end of the radiator and joining said inner conductor with a ring of said second high frequency coaxial cable, wherein said end cap has a characteristic frequency value substantially the same as the characteristic impedance value of the first high frequency coaxial cable.
A microwave radiator having an axially extending length, for therapeutic treatment, said radiator comprising:
- an inner conductor extending along the axial length of said radiator;
- a first high frequency coaxial cable, comprising an outer conductor and a portion of said inner conductor, said outer conductor being coaxially disposed about said inner conductor and extending along said portion of said inner conductor;
- a dielectric disposed between said inner conductor and said outer conductor and extending along the entire length of said inner conductor;
- a second high frequency coaxial cable adjacent to said first coaxial cable, said second coaxial cable having spaced conductive rings disposed about said dielectric along a remaining portion of said inner conductor, whereby electromagnetic radiation may flow in between said rings in a direction generally perpendicular to the axial direction of said inner conductor;
- and
- a skirt surrounding said outer conductor of said first high frequency coaxial cable, to alter the current flowing along the radiator.
Dependencies are inferred from the claim text.