Patents by Inventor Wataru MATSUZAWA
Wataru MATSUZAWA 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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Publication number: 20240134509Abstract: An input interface receives a trigger signal. A processor displays a first screen or a second screen on a display device based on the trigger signal. The first screen provides first medical information for each of a plurality of subjects. The second screen provides, for at least one of the plurality of subjects, second medical information that is not included in the first medical information.Type: ApplicationFiled: October 12, 2023Publication date: April 25, 2024Inventors: Daisuke Horiguchi, Wataru Matsuzawa, Mitsuhiro Oura, Haruo Fujimoto, Shinichi Sato, Masashi Sato
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Patent number: 11737735Abstract: A physiological information system includes a patient monitor configured to acquire a vital sign based on a vital sign signal of a subject, and an ultrasonic measuring apparatus configured to acquire ultrasonic images based on ultrasonic waves transmitted toward the subject and received from the subject. The patient monitor includes a storage device configured to store measured data of the vital signs in association with measurement dates and times, and to store the ultrasonic images in association with image capture timings, and a controller configured to display a screen on a display section based on data, including the measured data and the ultrasonic images, stored in the storage device.Type: GrantFiled: November 13, 2018Date of Patent: August 29, 2023Assignee: NIHON KOHDEN CORPORATIONInventors: Mitsuhiro Oura, Sou Kumagai, Wataru Matsuzawa, Nobuyuki Yasumaru, Kazuya Nagase, Hiroshi Torigai, Naoki Fukushima
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Publication number: 20230094927Abstract: A fluid balance management system includes: a detection device configured to output a detection signal corresponding to a load applied to a bed in which a subject is present; a prediction device configured to acquire load variation information indicating a variation over time of the load based on the detection signal, and predict an event that causes variation in fluid balance of the subject from the load variation information; and an output device configured to output prediction information corresponding to a prediction result of the event.Type: ApplicationFiled: September 19, 2022Publication date: March 30, 2023Applicant: NIHON KOHDEN CORPORATIONInventors: Takuya KAWASHIMA, Wataru MATSUZAWA, Hiroto SANO, Katsuyoshi SUZUKI, Yoshihiro TAKAYANAGI
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Publication number: 20230082422Abstract: A physiological information acquisition apparatus that acquires physiological information of a subject includes a reception device configured to receive waveform data corresponding to a measurement waveform of the physiological information from a sensor, and to acquire values of a plurality of characteristic parameters associated with the measurement waveform based on the waveform data, a processing device configured to input the values of the plurality of characteristic parameters to a machine-learned model to acquire a prediction result for at least one of a plurality of classes into which the waveform data is classified, and to specify a level of importance of each of the plurality of characteristic parameters for the prediction result, and an output device configured to output an index indicating a name of at least one of the plurality of characteristic parameters and the level of importance specified for the at least one characteristic parameter.Type: ApplicationFiled: September 1, 2022Publication date: March 16, 2023Applicant: NIHON KOHDEN CORPORATIONInventors: Takuya UMEMOTO, Jun Motogi, Keiichi Sato, Wataru Matsuzawa
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Publication number: 20230049898Abstract: A method includes: receiving first data including physiological information obtained from a subject and a first result that a disease is developing; specifying a first time point at which the physiological information included in the first data is obtained; receiving second data including the physiological information obtained from the subject and a second result that the disease is not developing; specifying a second time point at which the physiological information included in the second data is obtained; upon determining that a time interval between the first time point and the second time point is smaller than a first predetermined value, assigning, to the second data, a first training label indicating that the disease is developing and a weighting index that is capable of taking a plurality of values according to the time interval; and performing machine learning of a model by using the second data as training data.Type: ApplicationFiled: July 28, 2022Publication date: February 16, 2023Applicant: NIHON KOHDEN CORPORATIONInventors: Takuya UMEMOTO, Jun Motogi, Keiichi Sato, Wataru Matsuzawa
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Publication number: 20220336105Abstract: A physiological information acquisition device configured to acquire physiological information of a subject includes: an input interface configured to receive waveform data corresponding to a measurement waveform of the physiological information from a sensor; a prediction unit configured to extract a feature from the waveform data using a convolutional neural network and predict a probability of the waveform data being classified into each of a plurality of classes; an importance specification unit configured to specify an importance of the feature with respect to a prediction result of the probability for at least one of the plurality of classes; and an output unit configured to output an indicator indicating the importance together with the measurement waveform.Type: ApplicationFiled: April 4, 2022Publication date: October 20, 2022Applicant: NIHON KOHDEN CORPORATIONInventors: Takuya KAWASHIMA, Wataru MATSUZAWA
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Patent number: 11464496Abstract: A patient monitor that acquires and displays first vital sign information and second vital sign information of a subject includes an event detection unit that is configured to detect an activation start event for starting an activation process of biological information processing software which performs a process pertaining to the second vital sign information and an activating event for activating the biological information processing software and a software control unit that causes the biological information processing software to be in a standby state, in which a part of the activation process of the biological information processing software has been performed, when the activation start event is detected by the event detection unit, and causes the biological information processing software to be in an active state from the standby state when the activating event is detected by the event detection unit.Type: GrantFiled: December 6, 2016Date of Patent: October 11, 2022Assignee: NIHON KOHDEN CORPORATIONInventors: Mitsuhiro Oura, Sou Kumagai, Wataru Matsuzawa, Nobuyuki Yasumaru, Kazuya Nagase, Hiroshi Torigai, Naoki Fukushima
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Publication number: 20220284739Abstract: A method for generating a learned model applied to a prediction device that predicts a probability that a subject develops delirium based on a moving image in which the subject appears is provided. The method includes: acquiring first data corresponding to the moving image in which the subject appears; generating, based on the first data, second data corresponding to changes over time in relative positions of a plurality of feature points in a body of the subject in the moving image; generating third data indicating a determination result as to whether the subject develops delirium based on the moving image; and generating the learned model by causing a neural network to learn using the second data and the third data.Type: ApplicationFiled: February 22, 2022Publication date: September 8, 2022Applicant: NIHON KOHDEN CORPORATIONInventors: Hiroto SANO, Wataru Matsuzawa, Takuya Kawashima
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Patent number: 11312935Abstract: An object of the present disclosure is to provide a cell culture system, a cell culture environment evaluation device, and a program, capable of performing evaluation of a culture environment without causing an adverse effect on cell culture. An isolator is provided with a culture environment for housing a cell culture vessel having a culture solution containing cells to be cultured placed therein. A sensing unit measures the state of the culture environment and transmits the measurement result of the culture environment to the outside of the isolator. A control device receives the measurement result and performs evaluation in the culture environment based on the measurement result.Type: GrantFiled: December 26, 2017Date of Patent: April 26, 2022Assignee: Nihon Kohden CorporationInventors: Hodaka Makino, Wataru Matsuzawa
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Publication number: 20220117581Abstract: A patient monitor and physiological information measurement system are provided. The patient monitor for acquiring vital signals that are based on vital signs of a subject, and an ultrasonic image that is based on an ultrasonic wave which is transmitted to and received from the subject configured to be connectable to a plurality of displays, and includes a display controller that is configured to control the plurality of displays to display information including the vital signs in at least one of the displays.Type: ApplicationFiled: January 8, 2020Publication date: April 21, 2022Inventors: Mitsuhiro OURA, Sou KUMAGAI, Wataru MATSUZAWA, Nobuyuki YASUMARU, Kazuya NAGASE, Hiroshi TORIGAI, Naoki FUKUSHIMA
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Publication number: 20220015715Abstract: A processing device configured to process physiological information of a subject, the processing device includes a reception interface configured to receive first data corresponding to a measurement waveform of a first physiological parameter of the subject, and second data related to an acquisition environment of the first physiological parameter, an predictor configured to predict a first probability of correctly calculating a value of the first physiological parameter, based on the first data, and a processor configured to identify, of the first data, a part in which the first probability is higher than a first threshold under a circumstance where the first physiological parameter is determined to be abnormally acquired based on the second data.Type: ApplicationFiled: July 15, 2021Publication date: January 20, 2022Applicant: NIHON KOHDEN CORPORATIONInventors: Takuya KAWASHIMA, Hiroto SANO, Wataru MATSUZAWA
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Publication number: 20210315542Abstract: A physiological information measurement apparatus is configured to acquire a vital sign that is based on a physiological signal of a subject, and a captured image or a signal for generating the captured image that is acquired from an imaging device. The physiological information measurement apparatus includes a storage unit configured to store therein an electronic file, and a control unit configured to display at least one of the captured image and information of the vital sign on a display unit. At an image recording timing when an image recording instruction is provided, the control unit stores both the captured image and the information of the vital sign in the storage unit in an image format.Type: ApplicationFiled: July 26, 2019Publication date: October 14, 2021Applicant: NIHON KOHDEN CORPORATIONInventors: Mitsuhiro OURA, Sou KUMAGAI, Wataru MATSUZAWA, Nobuyuki YASUMARU, Kazuya NAGASE, Hiroshi TORIGAI, Naoki FUKUSHIMA
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Publication number: 20210150344Abstract: A method for generating a trained model is applied to an estimation apparatus configured to estimate a probability that a value of a predetermined physiological parameter is correctly calculated based on waveform data acquired from a subject being tested. The method includes: acquiring first data corresponding to a value of a first physiological parameter that has been correctly calculated from first waveform data; inputting second waveform data to an algorithm automatically calculating a value of a second physiological parameter acquired from input waveform data and to output second data; generating third data including a training label indicating whether the value of the second physiological parameter corresponding to the second data is a correct answer or an incorrect answer by comparing the second data with the first data; and training a neural network by using the second waveform data and the third data, to generate a trained model.Type: ApplicationFiled: November 3, 2020Publication date: May 20, 2021Applicant: Nihon Kohden CorporationInventors: Takuya KAWASHIMA, Wataru MATSUZAWA, Hiroto SANO
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Publication number: 20200359999Abstract: A physiological information system includes a patient monitor configured to acquire a vital sign based on a vital sign signal of a subject, and an ultrasonic measuring apparatus configured to acquire ultrasonic images based on ultrasonic waves transmitted toward the subject and received from the subject. The patient monitor includes a storage device configured to store measured data of the vital signs in association with measurement dates and times, and to store the ultrasonic images in association with image capture timings, and a controller configured to display a screen on a display section based on data, including the measured data and the ultrasonic images, stored in the storage device.Type: ApplicationFiled: November 13, 2018Publication date: November 19, 2020Inventors: Mitsuhiro OURA, Sou KUMAGAI, Wataru MATSUZAWA, Nobuyuki YASUMARU, Kazuya NAGASE, Hiroshi TORIGAI, Naoki FUKUSHIMA
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Publication number: 20200275908Abstract: An ultrasonic measurement system includes a display device configured to display an ultrasonic image and an ultrasonic probe electrically connectable to the display device. The ultrasonic probe includes an image capturing unit joined to or detachably attached to a first cable, the image capturing unit comprising a first optical lens to capture an image of a nearby object, and a probe head joined to or detachably attached to the first cable, the probe head being configured to transmit an ultrasonic beam toward a body surface of a subject and to receive a reflected wave from the body surface.Type: ApplicationFiled: November 9, 2018Publication date: September 3, 2020Inventors: Mitsuhiro OURA, Sou KUMAGAI, Wataru MATSUZAWA, Nobuyuki YASUMARU, Kazuya NAGASE, Hiroshi TORIGAI, Naoki FUKUSHIMA, Masashi SATO, Takuya AIZAWA
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Publication number: 20180371396Abstract: An object of the present disclosure is to provide a cell culture system, a cell culture environment evaluation device, and a program, capable of performing evaluation of a culture environment without causing an adverse effect on cell culture. An isolator is provided with a culture environment for housing a cell culture vessel having a culture solution containing cells to be cultured placed therein. A sensing unit measures the state of the culture environment and transmits the measurement result of the culture environment to the outside of the isolator. A control device receives the measurement result and performs evaluation in the culture environment based on the measurement result.Type: ApplicationFiled: December 26, 2017Publication date: December 27, 2018Applicant: NIHON KOHDEN CORPORATIONInventors: Hodaka Makino, Wataru Matsuzawa
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Publication number: 20180353160Abstract: A patient monitor that acquires and displays first vital sign information and second vital sign information of a subject includes an event detection unit that is configured to detect an activation start event for starting an activation process of biological information processing software which performs a process pertaining to the second vital sign information and an activating event for activating the biological information processing software and a software control unit that causes the biological information processing software to be in a standby state, in which a part of the activation process of the biological information processing software has been performed, when the activation start event is detected by the event detection unit, and causes the biological information processing software to be in an active state from the standby state when the activating event is detected by the event detection unit.Type: ApplicationFiled: December 6, 2016Publication date: December 13, 2018Applicant: NIHON KOHDEN CORPORATIONInventors: Mitsuhiro OURA, Sou KUMAGAI, Wataru MATSUZAWA, Nobuyuki YASUMARU, Kazuya NAGASE, Hiroshi TORIGAI, Naoki FUKUSHIMA
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Publication number: 20180296188Abstract: A patient monitor (10) acquires a vital sign that is based on a physiological signal of a subject, and an ultrasonic image that is based on a reflected wave of an ultrasonic wave which is irradiated onto the subject. A display section (16) displays information of the subject. A control section (14) switches between a first mode in which a screen containing information of the vital sign is displayed on the display section (16), and a second mode in which a screen containing the ultrasonic image is displayed on the display section (16).Type: ApplicationFiled: October 5, 2016Publication date: October 18, 2018Applicant: NIHON KOHDEN CORPORATIONInventors: Mitsuhiro OURA, Sou KUMAGAI, Wataru MATSUZAWA, Naoki KOBAYASHI, Hiroto SANO, Takashi MORI, Nobuyuki YASUMARU, Kazuya NAGASE
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Publication number: 20170014075Abstract: A support tool is mounted on a finger of a subject on whom a sensor is mounted to support acquisition of biological information. A first support is disposed on a nail side of the subject's finger. A second support is disposed on a ventral side of the subject's finger. The relative position of the second support with respect to the first support does not change. A bag is formed with a material softer than the first support and second support, and is disposed along an inner peripheral face of the first support. A ventilation tube forms a ventilation channel communicating with an inside of the bag. The sensor includes a light emission part and a light reception part. The light emission part is disposed between the subject's finger and the bag. The light reception part is disposed between the subject's finger and the second support.Type: ApplicationFiled: February 27, 2015Publication date: January 19, 2017Inventors: Naoto MORIMURA, Naoki KOBAYASHI, Katsuyuki HORIE, Hideaki HIRABARA, Katsuyoshi SUZUKI, Wataru MATSUZAWA, Sou KUMAGAI, Katsuhide TONE, Kenichi NOMURA