Strontium sealed source
AssigneeQsa Global, Inc.
InventorsMark G. SHILTON, Mark W. VOSE, Jason W. BOURN
Life of this patent
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Abstract
The disclosure pertains to a strontium-90 sealed radiological or radioactive source, such as may be used with treatment of the eye or other medical or industrial processes. The sealed radiological source includes a radiological insert within an encapsulation. The encapsulation may include increased shielding in the center thereof.
Claims19
A radiological insert with an upper convex surface and a lower concave surface, wherein a radius of curvature of the lower concave surface is shorter than a radius of curvature of the upper convex surface.
A radiological assembly including an encapsulation with a cavity therein, the cavity including a radiological source comprising a plurality of microbeads.
A radiological assembly including a plurality of disk-like sub-elements arranged in a circular pattern, wherein the disk-like sub-elements include strontium-90.
A radiological assembly including a first layer of a first plurality of disk-like sub-elements arranged in a circular pattern, and a second layer of a second plurality of disk-like sub-elements arranged in a circular pattern, wherein the first and second layers are positioned adjacent to each other, with a common longitudinal axis, wherein the disk-like sub-elements include strontium-90.
A toroidal disk for use as a radioactive insert in a radiation source containing strontium-90, wherein the strontium-90 is contained in a material or compound selected from the group consisting of a strontium ceramic, a strontium glass, SrF2, Sr2P2O7, SrTiO3, SrO, Sr2TiO4, SrZrO3, SrCO3, Sr(NbO3)2, SrSiO3, 3SrO.Al2O3, SrSO4, SrB6, SrS, SrBr2, SrC2, SrCl2, SrI2 and SrWO4.
A method of making a radioactive insert for use in a strontium-90 radiation source of materials chosen from the group consisting of hydroxides of copper, silver or gold, oxides of copper or silver or mixtures of these, by precipitation from solution followed by a step of forming, molding or pressing the material into porous disks, followed by a step of absorbing Strontium-90 from solution, followed by a step of evaporating to dryness, followed by step of processing to produce a sintered cermet containing at least one insoluble strontium compound, mixed and immobilized within a metal chosen from the group consisting of copper, silver, gold, and mixtures thereof.
A method of making a radioactive insert for use in a strontium-90 radiation source of materials chosen from the group consisting of hydroxides of copper, silver or gold, oxides of copper or silver, or mixtures of these, by precipitation from solution followed by a step of forming, molding or pressing the material into porous disks, followed by a step of absorbing Sr-90 from solution, followed by a step of evaporating to dryness, followed by step of processing to produce a sintered cermet containing at least one insoluble strontium compound, mixed and immobilized within a material chosen from the group consisting of copper oxide, silver oxide, copper hydroxide, silver hydroxide, gold hydroxide and mixtures thereof.
A method of making a radioactive insert for use in a strontium-90 radiation source of materials chosen from the group consisting of hydroxides of copper, silver or gold or oxides of copper or silver or mixtures thereof, by precipitation from solution followed by a step of forming, molding or pressing the material into disks, followed by a step of absorbing strontium-90 from solution, followed by a step of evaporating to dryness, followed by step of processing to produce a sintered cermet containing at least one insoluble strontium compound, mixed and immobilized within a decomposable compound of copper, silver, gold or mixtures thereof.
A method of mixing strontium-90 with metal chosen from the group consisting of copper, silver, gold, and mixtures thereof, by coprecipitation of hydroxides from solution followed by mechanical and thermal processing to form a cermet containing at least one insoluble strontium compound, mixed and immobilized within said metal.
A toroidal disk for use as a radioactive insert in a radiation source containing strontium-90, wherein the strontium-90 is contained in strontium-flouride (90SrF2) which is incorporated or mixed with aluminum.
Dependencies are inferred from the claim text.