a view from the luminal direction this strut is covered by a coating 20 containing at least one pharmaceutically active substance which spans a continuous opening 27 formed by strut 15 in each case sections of the same meshes are shown in fig5 a and 5 b wherein strut 15 with coating 20 depicted in fig5 a belongs to a non dilated implant while strut 15 shown in fig5 b was dilated with the corresponding implant coating 20 is elastic and can therefore assume both states without tearing fig6 shows a further embodiment of an implant according to the invention which substantially corresponds to the embodiment shown in fig2 the keyhole shaped openings are disposed in the opposite direction compared to the second embodiment furthermore coating 10 has a perforation line 22 extending approximately along a center line which is indicated using a dashed line is closed in the non dilated state see fig6 a and represents a predetermined breaking line interspaced holes are disposed in coating 10 and or coating 10 has a slightly smaller layer thickness along perforation line 22 during dilation of the implant after placement thereof at the site in the body to be treated the expansion of coating 10 is so great that perforation line 22 tears open and creates an opening 24 opening 24 is enclosed.