Therapeutic member including a rail to resist movement...

A - Human Necessities – 61 – M

Patent

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Details

A61M 36/04 (2006.01) A61M 36/00 (2006.01) A61M 36/12 (2006.01) A61N 5/00 (2006.01)

Patent

CA 2753203

A therapeutic member for use in brachytherapy deliverable to an implant site by way of a needle comprises a single radioactive source encapsulated by a bio-absorbable material having an outer surface including one or more ribs encircling the single radioactive source, a leading edge endcap rib and a trailing edge endcap rib. The one or more ribs reduces a tendency of the member to migrate and rotate within a patient's body after implantation. The encapsulating material further includes a first rail formed from the bio-absorbable material extending at least from opposite sides of the outer surface of the encapsulating material along the longitudinal axis of the therapeutic member, and a second rail formed from the bio-absorbable material extending at least from opposite sides of the outer surface of the encapsulating material along the longitudinal axis of the therapeutic member, the second rail arranged in a plane substantially perpendicular to a plane in which the first rail is arranged.

L'invention porte sur un élément thérapeutique pour utilisation en curiethérapie, administrable à un site d'implant au moyen d'une aiguille, lequel élément thérapeutique comprend une source radioactive unique encapsulée par un matériau bioabsorbable ayant une surface extérieure comprenant une ou plusieurs nervures entourant la source radioactive unique, une nervure pour bouchon d'extrémité de bord d'attaque et une nervure pour bouchon de bord de fuite. La ou les nervures réduisent la tendance de l'élément à migrer et à tourner à l'intérieur du corps d'un patient après implantation. Le matériau d'encapsulation comprend en outre un premier rail formé à partir du matériau bioabsorbable en s'étendant au moins à partir des côtés opposés de la surface extérieure du matériau encapsulant le long de l'axe longitudinal de l'élément thérapeutique, et un second rail formé à partir du matériau bioabsorbable s'étendant au moins à partir des côtés opposés de la surface extérieure du matériau encapsulant le long de l'axe longitudinal de l'élément thérapeutique, le second rail étant disposé dans un plan sensiblement perpendiculaire au plan dans lequel le premier rail est disposé.

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