| 摘要 |
The invention provides methods and devices for delivering low level radiation to inhibit neo-intimal hyperplasia following angioplasty or other intravascular procedures. In an exemplary method, a balloon (32) is inflated within a stenosed region of a blood vessel to produce a treated region. The balloon (32) is then deflated and a radioactive source (10) within a sleeve is aligned over the deflated balloon (32). The balloon (32) is again inflated at the treated region to engage the sleeve having the radioactive source (10) against the blood vessel within the treated region for from 1 minute to 40 minutes to deliver a sufficient dose of radiation to inhibit neo-intimal hyperplasia. |
