Implant for local active ingredient release

An implant for local active ingredient release, the implant having an upper wall, wherein the upper wall is closed and disk-shaped and consists of a material which is pierceable with a medical injection cannula using a force of less than 100 N, is self-sealing and is elastically deformable, a lower wall, wherein the lower wall is arranged opposite the upper wall, is disk-shaped, is elastically deformable and the lower wall has at least one feed-through through the lower wall, wherein the at least one feed-through is liquid-permeable, a hollow space which is arranged between the upper wall and the lower wall, an impenetrable anti-piercing means, wherein the anti-piercing means is arranged between the upper wall and the lower wall and is disk-shaped, wherein the anti-piercing means consists of a material which is not pierceable with a medical injection cannula using a force of less than 100 N, wherein the anti-piercing means is at least as large as 50% of an interior surface of the lower wall which delimits the hollow space;

• and wherein the anti-piercing means has surface patterning on a side facing the lower wall such that the anti-piercing means is spaced apart from the lower wall thereby allowing liquid to flow between the anti-piercing means and the lower wall.