Miniature x-ray tube with voltage selective electrodes
AssigneeRadi Medical Technologies AB
InventorsLeif Smith, Lars Tenerz, Jonas Tiren, Pelle Rangsten
Life of this patent
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Abstract
A method and a system for x-ray treatment of, for example, cancer or restenosis prevention inside a living body is disclosed. A miniature x-ray tube (1) is provided with at least one pair of electrodes (6, 8), the electrodes alternatingly serving as anode and cathode, respectively. A power supply (13) is connected to the electrodes, and a switching unit of the power supply alternates the electrical potential across the electrodes. With the x-ray tube according to the invention the temperature increase at the site of treatment is limited, thereby providing an effective treatment without unduly prolonged treatment duration.
Claims15
A device for providing x-ray irradiation to a site for treatment inside a human body, comprising:
- an elongated guiding member having a distal and a proximal end, and electrical leads, wherein
- a miniaturized x-ray tube is mounted at the distal end of the elongated guiding member wherein said x-ray tube includes a first electrode and a second electrode, each one of the first and the second electrodes respectively being connectable to a high voltage source via the leads to alternatingly act as an anode and as a cathode.
A system for radiation treatment of a site inside a living body, comprising:
- an elongated guiding member having a distal and a proximal end and electrical leads, wherein in a miniaturized x-ray tube is mounted at the distal end of the elongated guiding member;
- said x-ray tube having at least two electrodes;
- and
- a power source connected to the electrodes via the leads, wherein
- the power source comprises a switching unit for providing a voltage of switching polarities across the electrodes, each electrode thereby acting as anode and cathode, alternately.
A method for treatment of diseases inside a living body, comprising the steps of:
- connecting a power source to a miniature x-ray tube for providing an electric potential across electrodes of the x-ray tube for creating x-ray radiation, and introducing the miniature x-ray tube into an area for treatment inside the living body, wherein
- the electrical potential is switched to alternatingly operate the electrodes as anodes and cathodes.
Dependencies are inferred from the claim text.