# US 10,501,651 B2 · Radio-opaque 3D printing ink > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,501,651 B2 - Document ID: US10501651B2 - Status: Granted - Kind: B2 - Application number: 15/750,253 - Filed: 2016-12-05 - Published: 2018-11-29 - Granted: 2019-12-10 - Earliest claimed: 2015-12-03 - Applicants: L. Stephen Buchanan - Inventors: L. Stephen Buchanan - Web page: https://patentgrep.com/patent/US10501651B2 ## CPC - C09D 11/38: characterised by non-macromolecular additives other than solvents, pigments or dyes - B29C 64/112: using individual droplets, e.g. from jetting heads - B33Y 10/00: Processes of additive manufacturing - B33Y 70/00: Materials specially adapted for additive manufacturing - B33Y 80/00: Products made by additive manufacturing - C09D 11/10: based on artificial resins - G09B 23/28: for medicine - G09B 23/30: Anatomical models {(G09B23/281 - G09B23/288 take precedence)} - C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D) - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - G09B: EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS (devices for psychotechnics or for testing reaction times A61B5/16; games, sports, amusements A63; projectors, projector screens G03B) ## Abstract A 3D printing ink comprising a radio-opaque additive and a polymer ink and a method for 3D printing of anatomic replicas using the 3D printing ink are described. The radio-opaque additive is bismuth neodecanoate, and the amount of bismuth neodecanoate in the printing ink may range from about 6% to about 20% by weight. The polymer ink may be transparent or opaque. X-rays of anatomic replicas created with the 3D printing ink appear very similar to x-rays of organic hard tissues, thereby enhancing procedural training for health care professionals. ## Claims ### Claim 1 A 3D printing ink comprising a radio-opaque additive and a transparent polymer ink, wherein the radio-opaque additive is bismuth neodecanoate, in a range of about 6% to about 20% by weight. ### Claim 2 (depends on 1) A 3D printing ink according to claim 1, wherein the 3D printing ink contains about 12% bismuth neodecanoate by weight. ### Claim 3 A method for 3D printing of an anatomic replica using a 3D printing ink comprising a radio-opaque additive and a polymer ink, the radio-opaque additive including bismuth neodecanoate. ### Claim 4 (depends on 3) A method according to claim 3, wherein the 3D printing ink contains bismuth neodecanoate in a range of about 6% to about 20% by weight. ### Claim 5 (depends on 3) A method according to claim 3 wherein the polymer ink is transparent. ### Claim 6 (depends on 3) A method according to claim 3 wherein the polymer ink is opaque. ### Claim 7 A 3D printing ink comprising a radio-opaque additive and a polymer ink, wherein the radio-opaque additive contains bismuth neodecanoate in a range of about 6% to about 20% by weight. ### Claim 8 (depends on 7) A 3D printing ink according to claim 7, wherein the 3D printing ink contains about 12% bismuth neodecanoate by weight. ### Claim 9 (depends on 7) A 3D printing ink according to claim 7, wherein the polymer ink is transparent. ### Claim 10 (depends on 7) A 3D printing ink according to claim 7, wherein the polymer ink is opaque. ### Claim 11 A 3D printing ink comprising a radio-opaque additive and opaque polymer ink, wherein the radio-opaque additive is bismuth neodecanoate in a range of about 6% to about 20% by weight. ### Claim 12 (depends on 11) A 3D printing ink according to claim 11, wherein the 3D printing ink contains about 12% bismuth neodecanoate by weight. ### Claim 13 A 3D printing ink comprising: a radio-opaque additive including bismuth neodecanoate; and a polymer ink. ### Claim 14 (depends on 13) The 3D printing ink of claim 13 wherein bismuth neodecanoate is 6% to 12% by weight. ### Claim 15 (depends on 13) The 3D printing ink of claim 13 wherein bismuth neodecanoate is 12% to 20% by weight. ### Claim 16 (depends on 13) The 3D printing ink of claim 13 wherein the polymer ink is selected from the group consisting of transparent polymer ink and opaque polymer ink. ### Claim 17 A 3D printed anatomic replica comprising: a radio-opaque additive including bismuth neodecanoate; and a polymer ink. ### Claim 18 (depends on 17) The 3D printed anatomic replica of claim 17 wherein the bismuth neodecanoate is 6% to 20% by weight. ### Claim 19 (depends on 17) The 3D printed anatomic replica of claim 17, wherein the bismuth neodecanoate is in a range of 6% to 12% by weight. ### Claim 20 (depends on 17) The 3D printed anatomic replica of claim 17, wherein the bismuth neodecanoate is in a range of 12% to 20% by weight. ### Claim 21 (depends on 17) The 3D printed anatomic replica of claim 17, the polymer ink is selected from the group consisting of transparent polymer ink and opaque polymer ink.