Patents by Inventor Masahiko Iijima
Masahiko Iijima has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11971426Abstract: An automatic analysis device that avoids carryover and prevents deterioration of analysis performance without controlling reaction cell position is provided with: a reaction cell in which a sample and a reagent are mixed and allowed to react; a light source that radiates light onto the mixed liquid of the sample and the reagent; a detector that detects the light radiated from the light source; and a cleaning mechanism that cleans the reaction cell. The cleaning mechanism includes an intake nozzle that draws in liquid from the reaction cell and a discharge nozzle that discharges the liquid into the reaction cell; the intake nozzle and the discharge nozzle can move vertically; and the intake nozzle is cleaned by lowering the intake nozzle into the reaction cell, in which a cleaning liquid or cleaning water have been accumulated, without drawing in the cleaning liquid or the cleaning water.Type: GrantFiled: January 23, 2019Date of Patent: April 30, 2024Assignee: Hitachi High-Tech CorporationInventors: Rei Konishi, Nobuhiko Sasaki, Masahiko Iijima
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Patent number: 11971425Abstract: An automatic analysis device has a plurality of types of photometers having different quantitative ranges, and an analysis control unit for quantifying the desired component in specimens based on measurement values of one or more photometers selected from among the plurality of types of photometers. The analysis control unit: sets a switching region in an overlap region of respective quantitative ranges of the plurality of types of photometers, said switching region having a greater width than does the variation in quantitative values of the desired component based on the measurement values of photometers having the same specimen; compares the quantitative value of a quantitative range portion that corresponds to the switching region and the quantitative values of the desired component based on the measurement values of the photometers; and selects a photometer to be used in quantitative output of the desired component from among the plurality of types of photometers.Type: GrantFiled: April 28, 2023Date of Patent: April 30, 2024Assignee: HITACHI HIGH-TECH CORPORATIONInventors: Yuto Kazama, Masahiko Iijima, Sakuichiro Adachi
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Publication number: 20230408537Abstract: An automatic analysis device is provided with: a sample disk for holding a sample container that accommodates a sample; a reagent disk for holding a reagent container that accommodates a reagent; at least two different measuring units that respectively perform different types of analyses; a control part that controls the measuring units; and a display part that displays: a work flow area in which the flow of operation of the two or more measuring units is displayed; and an overview area in which the usable or unusable states of the respective measuring units are displayed, wherein the overview area has a unit necessity-of-use selection part that can select whether using each of the measuring units is necessary, and the control part controls the display part so as to change the display of the work flow area on the basis of the information set in the unit necessity-of-use selection part.Type: ApplicationFiled: July 14, 2023Publication date: December 21, 2023Inventors: Chie YABUTANI, Takumi YAMADA, Masahiko IIJIMA
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Publication number: 20230375581Abstract: In an automatic analyzer, an operator can rapidly identify a cause for abnormality of measurement and improve the abnormality, by referring to sample measurement data; calculating a combination of values of factors based on reaction process data, the factors being predetermined variables or measured values representing characteristics of a reaction; and referring to a correspondence table including a distribution diagram and information regarding an abnormality cause candidate. The distribution diagram includes a normal range region and a plurality of abnormal range regions that are generated by a combination of normal/abnormal ranges of the plurality of factors, and the abnormality cause candidate is associated with each of the abnormal range regions.Type: ApplicationFiled: February 10, 2021Publication date: November 23, 2023Inventors: Nozomi SAGAE, Masahiko IIJIMA
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Publication number: 20230375580Abstract: The present invention provides a system that makes a recommendation, to an operator, of a countermeasure method considered appropriate from a precursory stage of abnormality. This recommended action notification system comprises: a plurality of automatic analyzers 51 that include a first automatic analyzer; and a learning device 52 that is connected to a network 53. The recommended action notification system is for making a recommendation to an operator for an action to be executed on the first automatic analyzer.Type: ApplicationFiled: February 17, 2021Publication date: November 23, 2023Inventors: Aika NAKAJIMA, Masahiko IIJIMA, Kenta IMAI, Shunsuke SASAKI
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Patent number: 11747355Abstract: An automatic analysis device is provided with: a sample disk for holding a sample container that accommodates a sample; a reagent disk for holding a reagent container that accommodates a reagent; at least two different measuring units that respectively perform different types of analyses; a control part that controls the measuring units; and a display part that displays: a work flow area in which the flow of operation of the two or more measuring units is displayed; and an overview area in which the usable or unusable states of the respective measuring units are displayed, wherein the overview area has a unit necessity-of-use selection part that can select whether using each of the measuring units is necessary, and the control part controls the display part so as to change the display of the work flow area on the basis of the information set in the unit necessity-of-use selection part.Type: GrantFiled: September 22, 2021Date of Patent: September 5, 2023Assignee: HITACHI HIGH-TECH CORPORATIONInventors: Chie Yabutani, Takumi Yamada, Masahiko Iijima
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Publication number: 20230266352Abstract: An automatic analysis device has a plurality of types of photometers having different quantitative ranges, and an analysis control unit for quantifying the desired component in specimens based on measurement values of one or more photometers selected from among the plurality of types of photometers. The analysis control unit: sets a switching region in an overlap region of respective quantitative ranges of the plurality of types of photometers, said switching region having a greater width than does the variation in quantitative values of the desired component based on the measurement values of photometers having the same specimen; compares the quantitative value of a quantitative range portion that corresponds to the switching region and the quantitative values of the desired component based on the measurement values of the photometers; and selects a photometer to be used in quantitative output of the desired component from among the plurality of types of photometers.Type: ApplicationFiled: April 28, 2023Publication date: August 24, 2023Inventors: Yuto KAZAMA, Masahiko IIJIMA, Sakuichiro ADACHI
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Patent number: 11692929Abstract: As a standard solution for evaluating a scattered light measuring optical system mounted on an automated analyzer, a standard solution containing an insoluble carrier at a concentration, at which transmittance is in a range of 10% to 50%, is used, and a light quantity of a light source is adjusted such that a scattered light detector outputs a predetermined value.Type: GrantFiled: November 28, 2016Date of Patent: July 4, 2023Assignee: Hitachi High-Tech CorporationInventors: Sakuichiro Adachi, Masahiko Iijima, Yuto Kazama
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Patent number: 11674970Abstract: An automatic analysis device has a plurality of types of photometers having different quantitative ranges, and an analysis control unit for quantifying the desired component in specimens based on measurement values of one or more photometers selected from among the plurality of types of photometers. The analysis control unit: sets a switching region in an overlap region of respective quantitative ranges of the plurality of types of photometers, said switching region having a greater width than does the variation in quantitative values of the desired component based on the measurement values of photometers having the same specimen; compares the quantitative value of a quantitative range portion that corresponds to the switching region and the quantitative values of the desired component based on the measurement values of the photometers; and selects a photometer to be used in quantitative output of the desired component from among the plurality of types of photometers.Type: GrantFiled: March 10, 2021Date of Patent: June 13, 2023Assignee: HITACHI HIGH-TECH CORPORATIONInventors: Yuto Kazama, Masahiko Iijima, Sakuichiro Adachi
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Publication number: 20230069039Abstract: Provided is an automatic analysis device in which a step for checking the progress of deterioration of a reagent can be automated and the expiration date of the reagent can be managed. Properties in absorption spectroscopic analysis pertaining to a standard liquid during implementation of calibration are used to calibrate the automatic analysis device so as to generate a standard curve N times for each lot. A series of action are repeated, with successive results in the implementation of calibration being updated while N is increased by 1 for each instance, until a first lot is completed. The final results are displayed in a dedicated screen image.Type: ApplicationFiled: January 18, 2021Publication date: March 2, 2023Inventors: Tomotada OOTAKI, Kenichi TAKAHASHI, Masahiko IIJIMA
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Publication number: 20220326270Abstract: The present invention comprises: an ISE measurement unit 32 that measures the electrolyte concentration of a sample; a spectrophotometer 14 that measures biochemical parameters of a sample; a pH measurement mechanism 34 that measures the pH of a sample; sample dispensing mechanisms 21, 22 that dispense the sample for measurement in the ISE measurement unit 32 or the spectrophotometer 14 from a container that contains the sample; and a conveyance mechanism 27 that conveys the container. The conveyance mechanism 27, the sample dispensing mechanisms 21, 22, and the pH measurement mechanism 34 are disposed such that the dispensing of the sample by the pH measurement mechanism 34 for pH measurement, or pH measurement, is performed after the dispensing of the sample by the sample dispensing mechanisms 21, 22.Type: ApplicationFiled: March 9, 2020Publication date: October 13, 2022Inventors: Miki FURUYA, Emiko USHIKU, Masahiko IIJIMA
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Publication number: 20220074959Abstract: A high-throughput automatic analyzer integrates a biochemical analysis section and a blood coagulation analysis section. The analyzer is capable of achieving a reduction in size, system cost, and lifecycle cost. The automatic analyzer includes: a reaction disk; a first reagent dispensing mechanism that dispenses a reagent to reaction cells on the reaction disk; a photometer that irradiates a reaction solution in the reaction cell with light; a reaction cell cleaning mechanism; a reaction vessel supply unit that supplies a disposable reaction vessel for mixing and reacting a sample and a reagent with each other; a second reagent dispensing mechanism that dispenses a reagent to the disposable reaction vessel; a blood coagulation time measuring section that irradiates a reaction solution in the disposable reaction vessel with light to detect transmitted or scattered light; and a sample dispensing mechanism that dispenses a sample to the reaction cell and the disposable reaction vessel.Type: ApplicationFiled: November 19, 2021Publication date: March 10, 2022Inventors: Akihisa MAKINO, Hajime YAMAZAKI, Keiko YOSHIKAWA, Manabu ANDO, Masahiko IIJIMA
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Patent number: 11231432Abstract: Addressing the problem of preventing contamination, the present invention is characterized by being provided with a reagent nozzle (H) for discharging a reagent (M1) at a predetermined discharge pressure to a reaction vessel (V) in which a specimen (M2) is accommodated, a control unit for controlling the horizontal position of the reagent nozzle (H) in accordance with the liquid amount of the reagent (M1) and the viscosity of the reagent (M1), a dispensing unit for dispensing the reagent (M1) into the reaction vessel (V), and a photometer for detecting light radiated to a mixture of the specimen (M2) and the reagent (M1), the control unit setting the horizontal position of the reagent nozzle (H) to the center position of the reaction vessel (V) when the liquid amount of the reagent (M1) is greater than the amount of the specimen (M2) and the viscosity of the reagent (M1) is equal to the viscosity of the specimen (M2) or lower than the viscosity of the specimen (M2).Type: GrantFiled: February 27, 2018Date of Patent: January 25, 2022Assignee: HITACHI HIGH-TECH CORPORATIONInventors: Hiroki Akase, Masahiko Iijima, Chie Yabutani, Takanori Sawada, Rei Konishi
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Publication number: 20220003794Abstract: An automatic analysis device is provided with: a sample disk for holding a sample container that accommodates a sample; a reagent disk for holding a reagent container that accommodates a reagent; at least two different measuring units that respectively perform different types of analyses; a control part that controls the measuring units; and a display part that displays: a work flow area in which the flow of operation of the two or more measuring units is displayed; and an overview area in which the usable or unusable states of the respective measuring units are displayed, wherein the overview area has a unit necessity-of-use selection part that can select whether using each of the measuring units is necessary, and the control part controls the display part so as to change the display of the work flow area on the basis of the information set in the unit necessity-of-use selection part.Type: ApplicationFiled: September 22, 2021Publication date: January 6, 2022Inventors: Chie YABUTANI, Takumi YAMADA, Masahiko IIJIMA
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Publication number: 20210405079Abstract: An automated analyzer includes two or more types of photometers to obtain suitable output of the measurement results of the plurality of photometers and suitable data alarm output even if there is an abnormality, or the like, at the time of measurement. The automated analyzer includes, for example, two types of photometers having different quantitative ranges and an analysis control unit for controlling analysis that includes measurement of a given sample using the two types of photometers. If two types of data alarms corresponding to abnormalities, or the like, during measurement have been added to the two types of measurement results from the two types of photometers, the analysis control unit selects measurement result and data alarm output corresponding to the combination of the two types of data alarms and outputs the same to a user as analysis results.Type: ApplicationFiled: September 14, 2021Publication date: December 30, 2021Inventors: Yuto Kazama, Masahiko IIJIMA, Chie YABUTANI, Kenji KOGURE
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Patent number: 11209448Abstract: A high-throughput automatic analyzer integrates a biochemical analysis section and a blood coagulation analysis section. The analyzer is capable of achieving a reduction in size, system cost, and lifecycle cost. The automatic analyzer includes: a reaction disk; a first reagent dispensing mechanism that dispenses a reagent to reaction cells on the reaction disk; a photometer that irradiates a reaction solution in the reaction cell with light; a reaction cell cleaning mechanism; a reaction vessel supply unit that supplies a disposable reaction vessel for mixing and reacting a sample and a reagent with each other; a second reagent dispensing mechanism that dispenses a reagent to the disposable reaction vessel; a blood coagulation time measuring section that irradiates a reaction solution in the disposable reaction vessel with light to detect transmitted or scattered light; and a sample dispensing mechanism that dispenses a sample to the reaction cell and the disposable reaction vessel.Type: GrantFiled: July 24, 2019Date of Patent: December 28, 2021Assignee: HITACHI HIGH-TECH CORPORATIONInventors: Akihisa Makino, Hajime Yamazaki, Keiko Yoshikawa, Manabu Ando, Masahiko Iijima
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Patent number: 11187712Abstract: The present invention makes it possible for an automated analyzer including two or more types of photometers to obtain suitable output of the measurement results of the plurality of photometers and suitable data alarm output even if there is an abnormality, or the like, at the time of measurement. This automated analyzer includes, for example, two types of photometers having different quantitative ranges and an analysis control unit for controlling analysis that includes measurement of a given sample using the two types of photometers. If two types of data alarms corresponding to abnormalities, or the like, during measurement have been added to the two types of measurement results from the two types of photometers, the analysis control unit selects measurement result and data alarm output corresponding to the combination of the two types of data alarms and outputs the same to a user as analysis results.Type: GrantFiled: September 6, 2018Date of Patent: November 30, 2021Assignee: Hitachi High-Technologies CorporationInventors: Yuto Kazama, Masahiko Iijima, Chie Yabutani, Kenji Kogure
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Patent number: 11156625Abstract: An automatic analysis device is provided with: a sample disk for holding a sample container that accommodates a sample; a reagent disk for holding a reagent container that accommodates a reagent; at least two different measuring units that respectively perform different types of analyses; a control part that controls the measuring units; and a display part that displays: a work flow area in which the flow of operation of the two or more measuring units is displayed; and an overview area in which the usable or unusable states of the respective measuring units are displayed, wherein the overview area has a unit necessity-of-use selection part that can select whether using each of the measuring units is necessary, and the control part controls the display part so as to change the display of the work flow area on the basis of the information set in the unit necessity-of-use selection part.Type: GrantFiled: February 15, 2018Date of Patent: October 26, 2021Assignee: HITACHI HIGH-TECH CORPORATIONInventors: Chie Yabutani, Takumi Yamada, Masahiko Iijima
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Patent number: D997383Type: GrantFiled: December 23, 2021Date of Patent: August 29, 2023Assignee: Hitachi High-Tech CorporationInventors: Takamichi Mori, Akihito Wakui, Masahiko Iijima, Hikaru Takizawa, Nozomi Sagae
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Patent number: D1000634Type: GrantFiled: August 19, 2021Date of Patent: October 3, 2023Assignee: Hitachi High-Tech CorporationInventors: Takamichi Mori, Masaru Miyazaki, Masahiko Iijima, Nozomi Sagae