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).

  • Patent number: 12146890
    Abstract: 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: Grant
    Filed: September 14, 2021
    Date of Patent: November 19, 2024
    Assignee: Hitachi High-Tech Corporation
    Inventors: Yuto Kazama, Masahiko Iijima, Chie Yabutani, Kenji Kogure
  • Publication number: 20240345110
    Abstract: Prior to dispensing a sample into a reaction vessel 1 and performing sample measurement, an automatic analyzer dispenses pure water into the reaction vessel to perform water blank measurement, corrects absorbance data of a reaction solution of the sample and a reagent measured by sample measurement with water blank absorbance data measured by the water blank measurement, and performs an analytical sequence that analyzes the sample based on the corrected absorbance data, and also determines a water quality abnormality of a reaction tank circulating water 112 based on the water blank absorbance data measured by the water blank measurement. Accordingly, water quality abnormality is detected in a reaction tank circulating water without adding a dedicated mechanism or confirmation operation.
    Type: Application
    Filed: August 3, 2022
    Publication date: October 17, 2024
    Inventors: Hiromi Hirama, Hikaru TAKIZAWA, Tetsuji KAWAHARA, Masahiko IIJIMA, Shinji AZUMA
  • Publication number: 20240319221
    Abstract: Provided are an automatic analysis device capable of suppressing the mixing in of a suspended matter in an upper layer sample to be dispensed from a specimen container to a reaction container; and a method for controlling the automatic analysis device. The automatic analysis device analyzes a specimen and comprises a specimen dispensing probe that dispenses the upper layer sample of a specimen which has been separated into the upper layer sample and a lower layer sample, from a specimen container containing the specimen to a reaction container; and a control unit that controls the operation of the specimen dispensing probe. The control unit causes the specimen dispensing probe to remove part of the surface layer of the upper layer sample and/or apply vibrations to the surface layer of the upper layer sample and then dispense the upper layer sample from the specimen container to the reaction container.
    Type: Application
    Filed: October 22, 2021
    Publication date: September 26, 2024
    Applicant: Hitachi High-Tech Corporation
    Inventors: Airi SASAKI, Masahiko IIJIMA, Kenichi TAKAHASHI, Tomotada OOTAKI, Nozomi SAGAE
  • Publication number: 20240272187
    Abstract: 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: Application
    Filed: April 23, 2024
    Publication date: August 15, 2024
    Inventors: Yuto KAZAMA, Masahiko IIJIMA, Sakuichiro ADACHI
  • Publication number: 20240272186
    Abstract: 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: Application
    Filed: April 25, 2024
    Publication date: August 15, 2024
    Inventors: Akihisa MAKINO, Hajime YAMAZAKI, Keiko YOSHIKAWA, Manabu ANDO, Masahiko IIJIMA
  • Publication number: 20240192238
    Abstract: There is provided a sample container capable of dispensing a sample with a high accuracy even when a diameter of a test tube varies. The sample container includes: a containing unit that contains a sample and is inserted into a test tube; and a flange portion that is provided at an upper end of the containing unit and mounted on an open end portion of the test tube, in which the containing unit has a tubular body portion and a cup-shaped bottom portion connected to the body portion, and in the bottom portion, an angle formed by an inner wall continuous from the body portion and a central axis has a gradient of less than 20 degrees.
    Type: Application
    Filed: February 18, 2022
    Publication date: June 13, 2024
    Inventors: Akihito WAKUI, Takamichi MORI, Hikaru TAKIZAWA, Masahiko IIJIMA, Nozomi SAGAE
  • Patent number: 12000849
    Abstract: 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: Grant
    Filed: November 19, 2021
    Date of Patent: June 4, 2024
    Assignee: HITACHI HIGH-TECH CORPORATION
    Inventors: Akihisa Makino, Hajime Yamazaki, Keiko Yoshikawa, Manabu Ando, Masahiko Iijima
  • Patent number: 11971425
    Abstract: 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: Grant
    Filed: April 28, 2023
    Date of Patent: April 30, 2024
    Assignee: HITACHI HIGH-TECH CORPORATION
    Inventors: Yuto Kazama, Masahiko Iijima, Sakuichiro Adachi
  • Patent number: 11971426
    Abstract: 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: Grant
    Filed: January 23, 2019
    Date of Patent: April 30, 2024
    Assignee: Hitachi High-Tech Corporation
    Inventors: Rei Konishi, Nobuhiko Sasaki, Masahiko Iijima
  • Publication number: 20230408537
    Abstract: 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: Application
    Filed: July 14, 2023
    Publication date: December 21, 2023
    Inventors: Chie YABUTANI, Takumi YAMADA, Masahiko IIJIMA
  • Publication number: 20230375580
    Abstract: 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: Application
    Filed: February 17, 2021
    Publication date: November 23, 2023
    Inventors: Aika NAKAJIMA, Masahiko IIJIMA, Kenta IMAI, Shunsuke SASAKI
  • Publication number: 20230375581
    Abstract: 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: Application
    Filed: February 10, 2021
    Publication date: November 23, 2023
    Inventors: Nozomi SAGAE, Masahiko IIJIMA
  • Patent number: 11747355
    Abstract: 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: Grant
    Filed: September 22, 2021
    Date of Patent: September 5, 2023
    Assignee: HITACHI HIGH-TECH CORPORATION
    Inventors: Chie Yabutani, Takumi Yamada, Masahiko Iijima
  • Publication number: 20230266352
    Abstract: 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: Application
    Filed: April 28, 2023
    Publication date: August 24, 2023
    Inventors: Yuto KAZAMA, Masahiko IIJIMA, Sakuichiro ADACHI
  • Patent number: 11692929
    Abstract: 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: Grant
    Filed: November 28, 2016
    Date of Patent: July 4, 2023
    Assignee: Hitachi High-Tech Corporation
    Inventors: Sakuichiro Adachi, Masahiko Iijima, Yuto Kazama
  • Patent number: 11674970
    Abstract: 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: Grant
    Filed: March 10, 2021
    Date of Patent: June 13, 2023
    Assignee: HITACHI HIGH-TECH CORPORATION
    Inventors: Yuto Kazama, Masahiko Iijima, Sakuichiro Adachi
  • Publication number: 20230069039
    Abstract: 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: Application
    Filed: January 18, 2021
    Publication date: March 2, 2023
    Inventors: Tomotada OOTAKI, Kenichi TAKAHASHI, Masahiko IIJIMA
  • Publication number: 20220326270
    Abstract: 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: Application
    Filed: March 9, 2020
    Publication date: October 13, 2022
    Inventors: Miki FURUYA, Emiko USHIKU, Masahiko IIJIMA
  • Patent number: D997383
    Type: Grant
    Filed: December 23, 2021
    Date of Patent: August 29, 2023
    Assignee: Hitachi High-Tech Corporation
    Inventors: Takamichi Mori, Akihito Wakui, Masahiko Iijima, Hikaru Takizawa, Nozomi Sagae
  • Patent number: D1000634
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: October 3, 2023
    Assignee: Hitachi High-Tech Corporation
    Inventors: Takamichi Mori, Masaru Miyazaki, Masahiko Iijima, Nozomi Sagae