US 11,719,701 B2
Blood glucose level measuring chip and blood glucose level measuring device set
Fumihiko Chai, Yamanashi (JP); and Takeyuki Moriuchi, Yamanashi (JP)
Assigned to TERUMO KABUSHIKI KAISHA, Tokyo (JP)
Filed by TERUMO KABUSHIKI KAISHA, Tokyo (JP)
Filed on Dec. 17, 2019, as Appl. No. 16/717,383.
Application 16/717,383 is a continuation of application No. PCT/JP2018/021676, filed on Jun. 6, 2018.
Claims priority of application No. 2017-137932 (JP), filed on Jul. 14, 2017.
Prior Publication US 2020/0124610 A1, Apr. 23, 2020
Int. Cl. C12Q 1/32 (2006.01); G01N 33/66 (2006.01); G01N 21/78 (2006.01)
CPC G01N 33/66 (2013.01) [C12Q 1/32 (2013.01); G01N 21/78 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A blood glucose level measuring chip attachable on a blood glucose level measuring device of a blood glucose level in blood, the chip comprising:
a supply port through which the blood is supplied;
a flow path having the supply port formed at one end of the flow path; and
a blood glucose level measuring reagent disposed on an inner wall defining the flow path,
wherein the blood glucose level measuring reagent contains an aromatic hydrocarbon having at least one sulfonic acid group, and
an A/B ratio is in a range of 3.7 mmol/L to 184.8 mmol/L, wherein A (in mmol) represents a total molar number of aromatic hydrocarbons contained in the blood glucose level measuring reagent, and B (in L) represents a volume of a region in which the blood glucose level measuring reagent and the blood are mixed or the reagent is dissolved in the blood, wherein the region consists of a gap between a surface on which the reagent layer is formed and an opposing surface facing the reagent layer in the thickness direction of the reagent layer, on the inner wall defining the flow path, wherein the volume of the region is calculated as follows:
volume of the region=(reagent length L2)×(width W)×(thickness t2)
wherein the reagent length L2 consists of a length of the blood glucose level measuring reagent, the width W consists of a width of the gap between the surface on which the reagent layer is formed and the opposing surface facing the reagent layer in the thickness direction of the reagent layer, such that the width is the total width of the flow path, and the thickness t2 consists of a thickness of the gap between the surface on which the reagent layer is formed and the opposing surface facing the reagent layer in the thickness direction of the reagent layer.