Radioactive transition metal stents
AssigneeMobeta, Inc.
InventorsMichelangelo Delfino, Mary Elizabeth Day
Life of this patent
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Abstract
A radioactive transition metal stent, comprising one or more transition metals, wherein the transition metal stent surface is chemically bound to a radioactive material; and a method for producing the radioactive transition metal stent wherein the radioisotope is chemically bound to, and is uniformly confined to the transition metal stent surface without affecting the metallurgical properties of the transition metal stent is disclosed.
Claims16
A method of producing a radioactive transition metal stent, comprising one or more transition metals, wherein the transition metal stent surface is chemically bound to a radioactive material, comprising:
- (i) providing a solution of dehydrated phosphorus-32 enriched metaphosphoric acid;
- (ii) mixing the phosphorus-32 enriched metaphosphoric acid with an inert polymer to form an emulsion;
- (iii) stabilizing the emulsion;
- (iv) immersing a transition metal stent in the stabilized emulsion;
- (v) removing the stent from the emulsion;
- (vi) washing and drying the stent to obtain the radioactive transition metal stent;
- and
- (vii) immersing the stent from step (vi) in a suitable non-polar solvent with a low dielectric constant to remove the residual polymer.
Dependencies are inferred from the claim text.