Medical device with radiation source
First Claim
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1. A method for treating a body lumen comprising:
- (a) providing a non-radioactive member;
(b) activating the non-radioactive member to make an activated radiation source;
(c) attaching the activated radiation source about a distal portion of an elongate member; and
(d) percutaneously disposing the distal portion of the elongate member at a treatment site.
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Abstract
The appliance comprises radioactive radiation means formed by a coiled filament of radioactive material a proximal part of which is formed by a coiled filament having a pitch larger than that of the coiled filament. Coiled filament is for meshing with thread formed at the distal end of a guidewire.
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Citations
8 Claims
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1. A method for treating a body lumen comprising:
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(a) providing a non-radioactive member;
(b) activating the non-radioactive member to make an activated radiation source;
(c) attaching the activated radiation source about a distal portion of an elongate member; and
(d) percutaneously disposing the distal portion of the elongate member at a treatment site. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
(e) removing the radiation source from the elongate member after step (d).
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3. The method of claim 1 wherein step (c) is performed while the radiation source is disposed within a shielded housing.
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4. A method of claim 1 wherein the activated radiation source comprises a radioactive coil.
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5. The method of claim 1 wherein the elongate member is a guidewire.
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6. The method of claim 5 wherein the guidewire is adapted for insertion into a balloon catheter lumen.
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7. The method of claim 1 wherein the activated radiation source includes 90 Yttrium.
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8. The method of claim 4 wherein the coil is removably threaded at least partially about the distal portion of the elongate member.
Specification