US 11,857,695 B2
Anti-microbial coating for objects such as prosthetic implants
Firas Awaja, Galway (IE); and Giorgio Speranza, Madrano (IT)
Assigned to National University of Ireland, Galway, Galway (IE)
Appl. No. 17/787,786
Filed by National University of Ireland, Galway, Galway (IE)
PCT Filed Dec. 16, 2020, PCT No. PCT/EP2020/086584
§ 371(c)(1), (2) Date Jun. 21, 2022,
PCT Pub. No. WO2021/122854, PCT Pub. Date Jun. 24, 2021.
Claims priority of application No. 19218838 (EP), filed on Dec. 20, 2019.
Prior Publication US 2023/0043372 A1, Feb. 9, 2023
Int. Cl. A61L 27/30 (2006.01); A61L 27/06 (2006.01); A61L 27/54 (2006.01)
CPC A61L 27/303 (2013.01) [A61L 27/06 (2013.01); A61L 27/54 (2013.01); A61L 2300/404 (2013.01); A61L 2400/18 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method of providing an anti-microbial coating on an object, comprising the steps of:
pre-treating the object in a first oxygen plasma to graft oxygen-based functional groups on the surface of the object by plasma enhanced chemical vapour deposition;
coating the pre-treated object with a suspension of particulate graphene oxide to provide a graphene oxide coating on the object;
treating the object in a hydrocarbon plasma to deposit an amorphous hydrocarbon film on the graphene oxide coating by plasma enhanced chemical vapour deposition; and
treating the object in a second oxygen plasma configured to etch and flatten the coatings on the surface of the object.