# US 2017/0285019 A1 · Target substance measurement kit, target substance measurement system, immunochromatography measurement kit, and immunochromatography measurement system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0285019 A1 - Document ID: US20170285019A1 - Status: Published application - Kind: A1 - Application number: 15/513,683 - Filed: 2015-08-17 - Published: 2017-10-05 - Earliest claimed: 2014-10-02 - Assignees: Sony Corporation - Applicants: Sony Corporation - Inventors: Masahiro Matsumoto - Web page: https://patentgrep.com/patent/US20170285019A1 ## CPC - G01N 33/54306: {Solid-phase reaction mechanisms} - G01N 21/78: producing a change of colour - G01N 33/54388: {based on lateral flow} - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) ## Abstract Provided is a target substance measurement kit for detecting a target substance sensitively in a convenient manner. Provided is a target substance measurement kit including a capturing unit that captures a target substance contained in a liquid and a flow rate control unit that controls the rate of flow of the liquid in the capturing unit. The flow rate control unit is provided downstream from the capturing unit in the flow direction of the liquid. ## Claims ### Claim 1 A target substance measurement kit comprising: a capturing unit that captures a target substance contained in a liquid; and a flow rate control unit that controls the rate of flow of the liquid in the capturing unit, the flow rate control unit being provided downstream from the capturing unit in the flow direction of the liquid. ### Claim 2 (depends on 1) The target substance measurement kit according to claim 1, further comprising, upstream from the capturing unit in the flow direction, a liquid introduction unit into which the liquid is introduced, wherein the thickness of the capturing unit in the direction transverse to the flow direction is smaller than the thickness of the liquid introduction unit in the transverse direction. ### Claim 3 (depends on 1) The target substance measurement kit according to claim 1, further comprising, downstream from the flow rate control unit in the flow direction, a liquid holding unit that absorbs the liquid, wherein the thickness of the capturing unit in the direction transverse to the flow direction is smaller than the thickness of the liquid holding unit in the transverse direction. ### Claim 4 (depends on 2) The target substance measurement kit according to claim 2, wherein the thickness of the capturing unit in the direction transverse to the flow direction is 0.01 mm or more and 0.10 mm or less. ### Claim 5 (depends on 2) The target substance measurement kit according to claim 2, wherein the longitudinal direction of the capturing unit extends in the flow direction. ### Claim 6 (depends on 1) The target substance measurement kit according to claim 1, wherein the flow rate control unit includes a porous body, and the average pore size of the porous body is smaller than the average pore size of a portion of the capturing unit through which the liquid flows. ### Claim 7 (depends on 1) The target substance measurement kit according to claim 1, wherein the thickness of the flow rate control unit in the direction transverse to the flow direction is smaller than the thickness of the capturing unit in the transverse direction. ### Claim 8 (depends on 1) The target substance measurement kit according to claim 1, wherein the flow rate control unit includes a filter having through pores formed therein, and the average pore size of the through pores is smaller than the average pore size of a portion of the capturing unit through which the liquid flows. ### Claim 9 A target substance measurement system comprising a target substance measurement kit and a target substance measurement device, the target substance measurement kit including: a capturing unit that captures a target substance contained in a liquid; and a flow rate control unit that controls the rate of flow of the liquid in the capturing unit, the flow rate control unit being provided downstream from the capturing unit in the flow direction of the liquid, the target substance measurement device including: a light irradiation unit that irradiates the capturing unit with light; and a light detection unit that detects light emitted from the capturing unit. ### Claim 10 (depends on 9) The target substance measurement system according to claim 9, wherein the target substance measurement kit includes, upstream from the capturing unit in the flow direction, a liquid introduction unit into which the liquid is introduced, and the target substance measurement device includes a liquid injection mechanism that injects the liquid into the liquid introduction unit. ### Claim 11 An immunochromatography measurement kit comprising: a capturing unit containing an antibody immobilized on a flow path through which a liquid containing a target substance flows; and a flow rate control unit containing a porous body disposed on the flow path, the flow rate control unit being provided downstream from the capturing unit in the flow direction of the liquid. ### Claim 12 An immunochromatography measurement system comprising an immunochromatography measurement kit and a target substance measurement device, the immunochromatography measurement kit including: a capturing unit containing an antibody immobilized on a flow path through which a liquid containing a target substance flows; and a flow rate control unit containing a porous body disposed on the flow path, the flow rate control unit being provided downstream from the capturing unit in the flow direction of the liquid, the target substance measurement device including: a light irradiation unit that irradiates the capturing unit with light; and a light detection unit that detects light emitted from the capturing unit.