US 12,102,784 B2
Implant for local active ingredient release
Sebastian Vogt, Wehrheim (DE); and Thomas Kluge, Wehrheim (DE)
Assigned to Heraeus Medical GmbH, Wehrheim (DE)
Filed by Heraeus Medical GmbH, Wehrheim (DE)
Filed on Sep. 14, 2021, as Appl. No. 17/474,961.
Claims priority of application No. 20199745 (EP), filed on Oct. 2, 2020.
Prior Publication US 2022/0105325 A1, Apr. 7, 2022
Int. Cl. A61M 31/00 (2006.01); A61M 5/178 (2006.01); A61M 5/32 (2006.01)
CPC A61M 31/002 (2013.01) [A61M 5/1782 (2013.01); A61M 5/3286 (2013.01); A61M 2205/0216 (2013.01)] 15 Claims
OG exemplary drawing
 
1. 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.