| 摘要 |
An improved stent coating holder for application of coatings to stents is provided. In a first embodiment, a center rod (18) is passed through the stent (19), which is held at its ends by lower and upper crossbars (20,24) affixed respectively to the center rod and to a center rod guide (23). A locking pin (27) inserted through the center rod and guide tube fixes the stent between the crossbars, precluding stent movement during coating and minimizing holder shadowing. In a second embodiment, one end of a pre-formed wire is passed through the center of a stent, which is placed over pre-formed bends in the wire, and then the wire is permitted to expand to contact the inner diameter in at least two locations to hold the stent in place during coating, minimizing radial or longitudinal movement of the stent and stent holder shadowing. In a third embodiment, v-shaped stent holding projections affixed to opposing sides of tstent holding frame apply a compressive force to the ends of the stent to firmly locate the stent during the stent coating process. |
