Patent ID: 11932947
Assignee: TECH MET, INC.
Field: Medical technology (Instruments)
Classification: CPC C  A  B | IPC A  B  C

Claim 0:
1. A composition for etching a cobalt chromium surface, the composition comprising:
hydrochloric acid (HCl), 0.05N-0.8N nitric acid (HNO3), and hydrofluoric acid (HF); and
at least 3 g/l chromium (Cr), and at least 0.5 g/l molybdenum (Mo),
wherein the composition etches a nanoscale surface geometry into the cobalt chromium surface of a body implantable device at a rate of 0.1 to 1 mil/minute, and
wherein the body implantable device is a bone-contacting device and the nanoscale surface 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 surface geometry enhances endothelial attachment and proliferation when the tissue-contacting device is implanted adjacent tissue.