US 11,738,121 B2
Biocompatible medical device visible in x-ray and method for manufacturing thereof
Juhana Kostamo, Vantaa (FI); Mikko Matvejeff, Espoo (FI); and Xiaopeng Wu, Helsinki (FI)
Assigned to PICOSUN OY, Espoo (FI)
Filed by Picosun Oy, Espoo (FI)
Filed on Mar. 27, 2020, as Appl. No. 16/832,518.
Claims priority of provisional application 62/826,568, filed on Mar. 29, 2019.
Prior Publication US 2020/0306417 A1, Oct. 1, 2020
Int. Cl. A61L 29/18 (2006.01); A61L 31/18 (2006.01); A61L 31/08 (2006.01); C23C 16/40 (2006.01); C23C 16/455 (2006.01); A61L 29/10 (2006.01)
CPC A61L 29/18 (2013.01) [A61L 29/106 (2013.01); A61L 31/088 (2013.01); A61L 31/18 (2013.01); C23C 16/40 (2013.01); C23C 16/45525 (2013.01); A61L 2420/02 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A medical device configured as a stent, an intravenous injection tube or a catheter, having at least one surface, wherein at least a part of said surface is coated with a biocompatible layer configured to provide visibility of said device in X-rays, wherein the biocompatible layer comprises at least one metal oxide, the metal oxide being a heavy metal oxide selected from the group consisting of HfO2, WO3, and tantalum oxide, and additionally the biocompatible layer comprises a tungsten carbide, and a metal nitride, selected from the group comprising hafnium nitride, tungsten nitride and tantalum nitride, wherein said tungsten carbide, hafnium nitride, tungsten nitride and tantalum nitride are deposited using plasma-enhanced ALD, wherein said biocompatible layer is an Atomic Layer Deposition (ALD) layer.