# US 12,758,374 B2 · 3D printed implant with internal channels > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,758,374 B2 - Document ID: US12758374B2 - Status: Granted - Kind: B2 - Application number: 18/800,265 - Filed: 2024-08-12 - Published: 2024-12-05 - Granted: 2026-10-13 - Earliest claimed: 2018-06-12 - Assignees: BellaSeno GmbH - Applicants: BellaSeno GmbH - Inventors: Mohit Prashant Chhaya; Arpita Desai; Navid Khani; Sara Lucarotti - Web page: https://patentgrep.com/patent/US12758374B2 ## CPC - A61F 2/0077: {Special surfaces of prostheses, e.g. for improving ingrowth (A61F2/30767 takes precedence)} - B29C 64/386: Data acquisition or data processing for additive manufacturing - B33Y 50/00: Data acquisition or data processing for additive manufacturing - B33Y 80/00: Products made by additive manufacturing - A61F 2002/0081: {directly machined on the prosthetic surface, e.g. holes, grooves (A61F2/30771 takes precedence)} - A61F 2/12: Mammary prostheses - A61F 2210/0004: bioabsorbable - A61F 2230/0019: rectangular - A61F 2240/002: Designing or making customized prostheses - B29L 2031/7532: {Artificial members, protheses} - B33Y 10/00: Processes of additive manufacturing - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) - 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 - B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES ## Abstract An implant for insertion into a patient is provided. The implant includes a three-dimensionally printed structure of layers. Each layer comprises an infill pattern of the three-dimensionally printed structure, the infill pattern of each layer comprising a set of infill lines. The implant includes a plurality of hollow channels. The layers are arranged on top of one another such that the plurality of hollow channels are formed within the implant, wherein the walls of each channel are formed by sections of the infill lines of a plurality of layers of the printed structure of layers. At least one hollow channel extends between a first outer surface of the implant and a second outer surface of the implant. At least one hollow channel is oriented in a direction which is tilted with respect to a reference axis perpendicular to the first outer surface of the implant. ## Claims ### Claim 1 A method of tissue reconstruction or tissue augmentation, the method comprising implanting into the body of a subject an implant, wherein the implant comprises: a three-dimensionally (3D) printed structure of layers, wherein each layer comprises an infill pattern of the three-dimensionally printed structure, the infill pattern of each layer comprising a set of infill lines, wherein the layers are arranged on top of one another such that a plurality of adjacent tilted hollow channels comprising walls are formed within the implant; wherein the adjacent tilted hollow channels are separated from one another by the walls, wherein a wall of a first tilted hollow channel is a wall of a second adjacent tilted hollow channel; and wherein each tilted hollow channel comprises slanted walls, wherein a slanted wall is formed by sections of the infill lines of a plurality of alternate layers of the printed structure of layers, wherein the sections of infill lines are oriented in a first direction, and arranged above one another with a lateral offset, wherein the lateral offset is a dimension in a direction parallel to a first outer surface of the implant, wherein the lateral offset is larger than zero and less than 50% of a lateral channel dimension, wherein the plurality of tilted hollow channels extends between a first outer surface of the implant and a second outer surface of the implant, wherein a tilted hollow channel is oriented in a direction which is tilted with respect to a reference axis perpendicular to the first outer surface of the implant. ### Claim 2 (depends on 1) The method of claim 1, wherein the method further comprises injecting fat into the implant. ### Claim 3 (depends on 2) The method of claim 2, wherein the implant is a breast implant. ### Claim 4 (depends on 3) The method of claim 3, wherein the method further comprises injecting fat into the breast implant. ### Claim 5 (depends on 4) The method of claim 4, wherein the fat is injected from under the breast fold (inframammary injection). ### Claim 6 (depends on 2) The method of claim 2, wherein the implant is inserted into the body and the fat is injected into the implant via the same incision. ### Claim 7 (depends on 1) The method of claim 1, wherein the first outer surface of the implant and the second outer surface are opposite-facing surfaces. ### Claim 8 (depends on 1) The method of claim 1, wherein the first outer surface is parallel to a two-dimensional plane formed by a first layer of the three-dimensional (3D) printed structure. ### Claim 9 (depends on 1) The method of claim 1, wherein the first outer surface is the largest planar surface of the implant. ### Claim 10 (depends on 1) The method of claim 1, wherein an angle between a longitudinal axis of a channel and the reference axis lies between 10 degrees and 85 degrees. ### Claim 11 (depends on 10) The method of claim 10, wherein the three-dimensionally (3D) printed structure of layers comprises a first batch of layers and a second batch of layers, wherein the first batch of layers comprises odd-numbered layers of the three-dimensionally (3D) printed structure of layers, and wherein the second batch of layers comprises even-numbered layers of the three-dimensionally (3D) printed structure of layers, wherein the infill lines of the first batch of layers are oriented in a first direction, and wherein the infill lines of the second batch of layers are oriented in a second direction different to the first direction, wherein portions of the infill pattern of the odd-numbered layer of the first batch of layers are shifted with respect to portions of the infill pattern of a first infill layer of the first batch of layers. ### Claim 12 (depends on 11) The method of claim 11, wherein portions of the infill pattern of the even-numbered layers of the second batch of layers are shifted with respect to portions of the infill pattern of a first infill layer of the second batch of layers. ### Claim 13 (depends on 12) The method of claim 12, wherein a lateral offset value between a first infill line of a first odd-numbered layer and a first infill line of a second odd-numbered layer lies between 0% and 50% of a distance between the first infill line of the first odd-numbered layer and a second adjacent infill line of the first odd-numbered layer. ### Claim 14 (depends on 12) The method of claim 12, wherein a lateral offset value between a first infill line of a first odd-numbered layer and a first infill line of a second odd-numbered layer lies between 50% and 100% of a distance between the first infill line of the first odd-numbered layer and a second adjacent infill line of the first odd-numbered layer. ### Claim 15 (depends on 12) The method of claim 12, wherein the plurality of hollow channels converges towards a predefined region at the first outer surface or at the second outer surface of the implant. ### Claim 16 (depends on 15) The method of claim 15, wherein the predefined region is a point of a convergence located beyond the first outer surface or beyond the second outer surface of the implant.