US 12,072,308 B2
Culture device
Ryota Fujioka, Kyoto (JP)
Assigned to SCREEN HOLDINGS CO., LTD., Kyoto (JP)
Filed by SCREEN HOLDINGS CO., LTD., Kyoto (JP)
Filed on Jun. 27, 2022, as Appl. No. 17/850,287.
Claims priority of application No. 2021-116675 (JP), filed on Jul. 14, 2021.
Prior Publication US 2023/0018813 A1, Jan. 19, 2023
Int. Cl. G01N 27/04 (2006.01); G01N 33/483 (2006.01)
CPC G01N 27/04 (2013.01) [G01N 33/4833 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A culture device applicable to measurement of an electrical resistance of a culture, the culture device comprising:
a measurement chamber longer in a first direction than in a second direction intersecting said first direction;
a permeable layer partitioning said measurement chamber into a first chamber on a first side and a second chamber on a second side as seen in a third direction, said third direction intersecting said first and second directions, said permeable layer being permeable to liquid;
a first-side working electrode disposed on the first side as seen in said third direction with respect to said measurement chamber, and having an electrode portion longer in said first direction than in said second direction;
a second-side working electrode disposed on the second side as seen in said third direction with respect to said measurement chamber, and having an electrode portion longer in said first direction than in said second direction; and
a first-side reference electrode disposed on the first side as seen in said third direction with respect to said measurement chamber, and having an electrode portion longer in said first direction than in said second direction,
wherein said first-side working electrode includes:
a first first-side working electrode portion including a first end portion and a second end portion such that the first first-side working electrode extends in said first direction from the first end portion to the second end portion;
a second first-side working electrode portion including a third end portion and a fourth end portion such that the second first-side working electrode extends in said first direction from the third end portion to the fourth end portion, the second first-side working electrode being spaced from said first first-side working electrode portion in said second direction; and
a first-side working bus portion extending in said second direction and electrically connected to the first end portion of said first first-side working electrode portion and to the third end portion of said second first-side working electrode portion,
wherein said first-side reference electrode is disposed between said first first-side working electrode portion and said second first-side working electrode portion in said second direction,
wherein said first-side reference electrode has a width smaller than widths of said first first-side working electrode portion and said second first-side working electrode portions, and
wherein said first first-side working electrode portion and said second first-side working electrode portion extend in said second direction to said outside of said measurement chamber.