The present disclosure relates to implantable medical devices including swellable tissue gripping elements and methods of forming such devices. The implantable medical device may comprise a biocompatible substrate having a surface comprising at least one swellable grip member. The implantable medical device may take on the form of a surgical mesh, patch, buttress, or pledget and the swellable member may comprise spikes and/or spiked naps. The implantable medical device may also contain a bioactive agent.
