Claims
- 1. An intravascular medical device for providing radiation treatment with a preselected amount of a preselected radioisotope adsorbed from solution, comprising:an implantable component; a chelating coating attached to a preselected surface of said component, said chelating coating being selected to have a binding affinity for said radioisotope; and a treatment amount of said radioisotope adsorbed by said chelating coating and substantially equal to said preselected amount loaded from solution.
- 2. The medical device of claim 1, wherein said implantable component comprises an expandable stent.
- 3. The medical device of claim 1, further comprising a base layer attached to said preselected surface of said component and disposed below said chelating coating.
- 4. The medical device of claim 1, wherein said preselected amount of said radioactive isotope adsorbed by said chelating coating has radioactively decayed into said treatment amount.
- 5. The medical device of claim 1, wherein said radioactive isotope comprises a P-emitter.
- 6. The medical device of claim 5, wherein said β-emitter has a half-life of between 24 hours and 2 months.
- 7. The medical device of claim 6, wherein said β-emitter has a half-life of between 2 and 18 days.
Parent Case Info
This application is a continuation of U.S. Ser. No. 08/685,447 filed Jul. 29, 1996, now U.S. Pat. No. 5,871,436.
US Referenced Citations (22)
Continuations (1)
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Number |
Date |
Country |
Parent |
08/685447 |
Jul 1996 |
US |
Child |
09/247632 |
|
US |