# US 11,443,851 B2 · Cancer test system and method for assessing cancer test > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,443,851 B2 - Document ID: US11443851B2 - Status: Granted - Kind: B2 - Application number: 15/769,682 - Filed: 2015-11-30 - Published: 2018-11-01 - Granted: 2022-09-13 - Earliest claimed: 2015-11-30 - Assignees: Hirotsu Bio Science Inc. - Applicants: Hirotsu Bio Science Inc. - Inventors: Minoru Sakairi; Masakazu Sugaya; Koichi Terada; Taku Nakamura; Norihito Kuno - Web page: https://patentgrep.com/patent/US11443851B2 ## CPC - G16H 50/20: for computer-aided diagnosis, e.g. based on medical expert systems - G01N 21/00: Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light (G01N3/00 - G01N19/00 take precedence) - G01N 33/48: Biological material, e.g. blood, urine (G01N33/02, G01N33/26, G01N33/44, G01N33/46 take precedence); Haemocytometers (counting blood corpuscules distributed over a surface by scanning the surface G06M11/02) - G01N 33/5029: {on cell motility} - G01N 33/5085: {of invertebrates} - G01N 33/575: for cancer - G01N 33/57585: {involving compounds identifiable in body fluids} - G01N 2333/4353: from nematodes - G16H: HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA - 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 In order to determine, in a cancer test using nematodes, whether or not the nematodes used in the cancer test are adequate, the present invention is characterized in that after a plate on which a urine from a subject and the nematode are set is placed, a cancer test apparatus performs imaging for quality assay of the nematode during the initial two minutes; an analysis apparatus determines a quality of the nematode using the imaging result; after taxis of the nematode is completed, the cancer test apparatus performs imaging for cancer test assay by the nematode; and the analysis apparatus determines the presence or absence of a cancer in the subject using the imaging result. ## Claims ### Claim 1 A cancer test device comprising: a first camera configured to capture a first image of nematodes on a taxis plate to assay a quality of the nematodes, urine from a subject being placed on the taxis plate; a second camera configured to capture a second image of the nematodes on the taxis plate to determine a cancer in the subject; a memory configured to store a program; and a processor programmed to: obtain a mobility of the nematodes by calculating an average distance of distances that the nematodes on the taxis plate have moved during an initial predetermined period of time based on the captured first image; determine whether the mobility of the nematodes is more than a predetermined value; determine whether a culture temperature at which the nematodes are cultured is within a first predetermined temperature range; determine whether a taxis temperature at which the nematodes move on the taxis plate is within a second predetermined temperature range; determine that the quality of the nematodes is acceptable when the processor determines that the mobility of the nematodes is more than the predetermined value, the culture temperature is within the first predetermined temperature range, and the taxis temperature is within the second predetermined temperature range; and determine a presence of the cancer in the subject when a taxis index of the nematodes from the captured second image is more than a predetermined threshold. ### Claim 2 (depends on 1) The cancer test device according to claim 1, wherein, before the processor is programmed to cause the first camera to capture the first image, the nematodes are arranged on the taxis plate along a first direction, the urine is spaced apart from the nematodes along a second direction on the taxis plate, and the first direction is perpendicular to the second direction, the processor is programmed to obtain the mobility of the nematodes by calculating an average component distance of components along the second direction of the distances that the nematodes on the taxis plate have moved during the initial predetermined period of time based on the captured first image, and the average distance of the distances that the nematodes on the taxis plate have moved during the initial predetermined period of time corresponds to the average component distance of the components along the second direction of the distances. ### Claim 3 (depends on 1) The cancer test device according to claim 1, wherein the processor is programmed to cause the second camera to capture the second image of the nematodes on the taxis plate after the processor obtains the mobility of the nematodes, and the initial predetermined period of time is in a range of 30 seconds to two minutes. ### Claim 4 (depends on 1) The cancer test device according to claim 1, wherein the processor is programmed to detect a weight of the taxis plate that is placed on an imaging stage, and the processor is programmed to cause the first camera to capture the first image of the nematodes on the taxis plate when the processor detects a change in the weight. ### Claim 5 (depends on 1) The cancer test device according to claim 1, wherein the processor is programmed to determine that the quality of the nematodes is acceptable when the processor determines that the mobility of the nematodes is more than 6 mm as the predetermined value and the taxis temperature is within 23° C.±0.5° C. as the second predetermined temperature range. ### Claim 6 (depends on 5) The cancer test device according to claim 5, wherein the processor is programmed to determine that the quality of the nematodes is acceptable when the processor determines that the culture temperature is within 20° C.±0.5° C. as the first predetermined temperature range. ### Claim 7 (depends on 1) The cancer test device according to claim 1, wherein the first camera is configured to capture a movie or time-lapse images as the first image, the processor is programmed to calculate a sum of the distances that the nematodes on the taxis plate have moved from an initial position to a current position for every frame of the movie or for every image of the time-lapse images during the initial predetermined period of time, and the processor is programmed to obtain the mobility of the nematodes by calculating a time average of the sum of the distances. ### Claim 8 (depends on 1) The cancer test device according to claim 1, wherein the first camera is configured to capture a movie or time-lapse images as the first image, the processor is programmed to calculate a sum of the distances in a horizontal direction that the nematodes on the taxis plate have moved from an initial position to a current position for every frame of the movie or for every image of the time-lapse images during the initial predetermined period of time, and the processor is programmed to obtain the mobility of the nematodes by calculating a time average of the sum of the distances. ### Claim 9 (depends on 1) The cancer test device according to claim 1, wherein the first camera is configured to continuously capture a plurality of static images as the first image, and the processor is programmed to obtain the mobility of the nematodes by calculating an average of a sum of a distance that each of the nematodes on the taxis plate has moved from an initial position to a current position for a fixed time during the initial predetermined period of time.