Patent ID: 11952669
Assignee: TECH MET, INC.
Field: Surface technology, coating (Chemistry)
Classification: CPC C  A | IPC A  C

Claim 0:
1. A composition for etching a nanoscale geometry into a surface of a body implantable device formed of a metal or metal alloy, the composition comprising:
1.2N-3.0N hydrochloric acid (HCl), 2.0N-4.0N nitric acid (HNO3), 0.1N-0.3N phosphoric acid (H3PO4), 0.1N-0.3N hydrofluoric acid (HF), and
component metals of the body implantable device, wherein the metal or metal alloy of the body implantable device comprises stainless steel, and the composition comprises 3.75 g/l-90 g/l of each of chromium (Cr), molybdenum (Mo), and nickel (Ni), and up to 225 g/l iron (Fe),
wherein the body implantable device is a bone-contacting device and the nanoscale geometry enhances osseointegration when the bone-contacting device is implanted adjacent living bone, or
wherein the body implantable device is a tissue-contacting device and the nanoscale geometry enhances endothelial attachment and proliferation when the tissue-contacting device is implanted adjacent tissue.