US 12,187,993 B2
Suspension maintenance method, suspension maintenance apparatus, and bio 3D printer including same
Kyoung Whee Jeon, Seoul (KR); Min Hyuck Kang, Seoul (KR); and Hyo Kyoung Bae, Gyeonggi-do (KR)
Assigned to CLECELL CO., LTD., Gyeonggi-do (KR)
Appl. No. 17/419,267
Filed by CLECELL CO., LTD., Gyeonggi-do (KR)
PCT Filed Jan. 10, 2020, PCT No. PCT/KR2020/000528
§ 371(c)(1), (2) Date Jun. 28, 2021,
PCT Pub. No. WO2020/184829, PCT Pub. Date Sep. 17, 2020.
Claims priority of application No. 10-2019-0029371 (KR), filed on Mar. 14, 2019; and application No. 2019-142280 (JP), filed on Aug. 1, 2019.
Prior Publication US 2022/0073849 A1, Mar. 10, 2022
Int. Cl. C12M 3/00 (2006.01); B29C 64/209 (2017.01); B29C 64/314 (2017.01); B33Y 30/00 (2015.01); B33Y 40/10 (2020.01); C12M 1/26 (2006.01)
CPC C12M 21/08 (2013.01) [B29C 64/209 (2017.08); B29C 64/314 (2017.08); B33Y 30/00 (2014.12); B33Y 40/10 (2020.01); C12M 33/04 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A suspension maintenance apparatus comprising:
a body detachably coupled to a syringe;
a vent formed inside the body in a longitudinal direction of the syringe;
a pipette fixture extending downward from the body and the pipette fixture having a tapered shape whose outer diameter decreases downwardly;
an air discharge port formed inside the pipette fixture, connected to the vent, and communicated into the syringe, wherein the air discharge port extends in a direction perpendicular to the longitudinal direction of the syringe, and is configured to eject air discharged through the air discharge port toward an inner wall of the syringe;
a syringe fixing arm protruding from the body in a direction perpendicular to the longitudinal direction of the syringe to surround an upper flange of the syringe and fixed to the syringe; and
a pipette coupled to the pipette fixture and the pipette having a hollow tapered shape, wherein an inner diameter of the pipette decreases downwardly and having a lower end positioned in an outlet of the syringe, and wherein the pipette has an upper portion coupled to the pipette fixture and completely sealed by the pipette fixture so that air is not injected into the pipette through the upper portion of the pipette.