US 11,696,832 B2
Method and system for fabricating object featuring properties of a hard tissue
Daniel Dikovsky, Ariel (IL); Blake Zachary Courter, Reading, MA (US); and Ben Klein, Tel-Aviv (IL)
Assigned to Stratasys Ltd., Rehovot (IL)
Appl. No. 16/632,548
Filed by Stratasys Ltd., Rehovot (IL)
PCT Filed Jul. 27, 2018, PCT No. PCT/IL2018/050843
§ 371(c)(1), (2) Date Jan. 21, 2020,
PCT Pub. No. WO2019/021295, PCT Pub. Date Jan. 31, 2019.
Claims priority of provisional application 62/538,026, filed on Jul. 28, 2017.
Prior Publication US 2020/0155321 A1, May 21, 2020
Int. Cl. B29C 64/393 (2017.01); B33Y 50/02 (2015.01); A61F 2/30 (2006.01); B29C 64/112 (2017.01); B29C 64/336 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 70/00 (2020.01); B33Y 80/00 (2015.01)
CPC A61F 2/3094 (2013.01) [B29C 64/112 (2017.08); B29C 64/336 (2017.08); B29C 64/393 (2017.08); A61F 2002/30985 (2013.01); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12); B33Y 70/00 (2014.12); B33Y 80/00 (2014.12)] 24 Claims
OG exemplary drawing
 
1. A method of additive manufacturing an object featuring properties of a hard bodily tissue, the method comprising:
dispensing and solidifying a plurality of non-biological material formulations to sequentially form a plurality of hardened layers in a configured pattern corresponding to a shape of the object, wherein for at least a portion of said layers, wherein said dispensing comprises:
forming voxel elements containing different material formulations at interlaced locations to form a three-dimensional textured region spanning over said portion and comprising a plurality of texture elements each comprising an interior portion surrounded by a wall portion, wherein said interior and said wall portions are made of different material formulations and wherein said material formulations and said interlaced locations are selected such that said textured region exhibits, once hardened, a stress variation of at most ±20% over a strain range of from about 0.1% to about 0.3%; and
dispensing at least one of said material formulations to form a shell at least partially surrounding said textured region.