Radioactive radiation source for ophthalmic brachytherapy

A - Human Necessities – 61 – N

Patent

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A61N 5/10 (2006.01)

Patent

CA 2543544

The radioactive radiation source of the invention is suitable for brachytherapy and especially for ocular or ophthalmic brachytherapy such as in the treatment of macula degeneration, preferably age related macula degeneration (AMD). The radiation source of the invention comprises a radiation source for brachytherapy having an elongated radiation emitting element (1) within an elongated means for containment (2) preferably arranged such that the longitudinal axis of the radiation emitting element and the longitudinal axis of said means for containment are aligned. Said means for containment comprises a shielding section (3) and a radiation transition section (4). Said shielding section (3) covers said radiation emitting element at least partially to substantially attenuate any radiation emitted in the direction of said shielding section. Preferably the shielding section covers the element to about 30-90 %, preferably 40-70 % and more preferably 50-60 %.

L'invention concerne une source de rayonnement radioactif pour la curiethérapie, plus particulièrement pour la curiethérapie oculaire ou ophtalmique telle qu'elle est utilisée dans le traitement de la dégénération maculaire, de préférence la dégénération maculaire liée à l'âge (AMD). La source de rayonnement de l'invention comprend une source de rayonnement de radiothérapie, dotée d'un élément allongé d'émission de rayonnement (1) à l'intérieur d'un dispositif allongé de confinement (2), de préférences disposé de telle sorte que l'axe longitudinal de l'élément d'émission de rayonnement et l'axe longitudinal du dispositif de confinement sont alignés. Ce dispositif de confinement comporte une partie blindage (3) et une partie transition de rayonnement (4). La partie blindage (3) couvre l'élément d'émission de rayonnement au moins partiellement pour atténuer de manière substantielle tous rayonnements émis en direction de la partie blindage, laquelle couvre l'élément pour environ 30 à 90 %, de préférence 40-70 % et mieux encore 50-60 %.

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