Patents by Inventor Sumiaki Matsuo
Sumiaki Matsuo 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: 11931498Abstract: A blood purification apparatus is provided in which waste liquid is prevented from flowing through an ultrafiltration pump during ultrafiltration so that the performance and accuracy of ultrafiltration can be maintained over a long period. The blood purification apparatus includes an ultrafiltration line one end of which is connected to a dialysate introduction line at a position on a downstream side with respect to a duplex pump. The ultrafiltration line is provided with the ultrafiltration pump. The ultrafiltration pump is capable of performing ultrafiltration by drawing dialysate in the dialysate introduction line through the ultrafiltration line such that the volume of the dialysate to be introduced into a dialyzer becomes smaller than the volume of waste liquid to be drained from the dialyzer.Type: GrantFiled: December 17, 2019Date of Patent: March 19, 2024Assignee: Nikkiso Company LimitedInventors: Fumihiko Ishizaki, Sumiaki Matsuo
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Patent number: 11911545Abstract: A dialysis base unit that is provided separately from a dialysate supply device for delivering dialysate and performs hemodialysis using the dialysate delivered from the dialysate supply device. The dialysis base unit includes a dialysate supply device identifying unit capable of identifying the dialysate supply device connected to the dialysis base unit. A dialysis system includes the dialysate supply device for delivering dialysate and the dialysis base unit.Type: GrantFiled: October 26, 2018Date of Patent: February 27, 2024Assignee: Nikkiso Co., Ltd.Inventors: Sumiaki Matsuo, Fumihiko Ishizaki, Hiroyuki Kawajiri
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Patent number: 11865292Abstract: A tube connector is configured to connect between a main tube and a peristaltically-actuated tube. The tube connector includes a first connection part configured to be connected to the main tube; a second connection part configured to be connected to the peristaltically-actuated tube; a communication part being provided between the first connection part and the second connection part and having a communication flow path for communicating between a first flow path through which fluid flows in the first connection part and a second flow path through which the fluid flows in the second connection part; and a main body section. The first flow path and the second flow path are formed to have a constant diameter and are formed so as to extend along the axial direction of the main body section. A diameter of the first flow path is smaller than a diameter of the second flow path. The communication flow path is formed so as to gradually enlarge in diameter from a first flow path side to a second flow path side.Type: GrantFiled: August 1, 2019Date of Patent: January 9, 2024Assignee: Nikkiso Co., Ltd.Inventor: Sumiaki Matsuo
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Publication number: 20230417784Abstract: To provide a control method of a sample pretreatment apparatus capable of maintaining measurement precision in a mass spectrometer without newly installing a component part and without largely changing a measurement process by an automatic analyzer. A control method of a sample pretreatment apparatus 1 of a sample inspection automation system to which a sample pretreatment apparatus applying pretreatment to a sample used in mass spectrometry, a mass spectrometer, and another automatic analyzer are connected, includes: determining serum information by referring to a measurement result of the sample by the other automatic analyzer or previous value information; determining conditions of a washing process of eliminating impurities contained in the sample at the time of the sample pretreatment based on the serum information; and dispensing a cleaning fluid into a reaction container for mixing the sample and a reagent based on the conditions.Type: ApplicationFiled: December 10, 2021Publication date: December 28, 2023Inventors: Akiko SUZUKI, Shinya MATSUOKA, Daisuke EBIHARA, Sumiaki MATSUO
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Patent number: 11413387Abstract: There is provided a blood purification apparatus with which the efficiency of dialysate purification can be improved and the reduction in the amount of electrolytes contained in dialysate and necessary for treatment can be suppressed. The blood purification apparatus includes a storage device capable of storing a predetermined amount of dialysate that is necessary for blood purification treatment, a dialysate circulation line through which the dialysate is allowed to circulate by introducing the dialysate in the storage device into the dialyzer and draining waste liquid from the dialyzer into the storage device, and the dialysate purification device that purifies the dialysate in the dialysate circulation line. A treatment state in which the dialysate is allowed to be introduced into the dialyzer without flowing through the dialysate purification device and a purification state in which the dialysate is allowed to be purified by the dialysate purification device are taken switchably.Type: GrantFiled: March 21, 2019Date of Patent: August 16, 2022Assignee: Nikkiso Company LimitedInventors: Satoru Kawarabayashi, Sumiaki Matsuo
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Publication number: 20210346669Abstract: A tube connector is configured to connect between a main tube and a peristaltically-actuated tube. The tube connector includes a first connection part configured to be connected to the main tube; a second connection part configured to be connected to the peristaltically-actuated tube; a communication part being provided between the first connection part and the second connection part and having a communication flow path for communicating between a first flow path through which fluid flows in the first connection part and a second flow path through which the fluid flows in the second connection part; and a main body section. The first flow path and the second flow path are formed to have a constant diameter and are formed so as to extend along the axial direction of the main body section. A diameter of the first flow path is smaller than a diameter of the second flow path. The communication flow path is formed so as to gradually enlarge in diameter from a first flow path side to a second flow path side.Type: ApplicationFiled: August 1, 2019Publication date: November 11, 2021Applicant: Nikkiso Co., Ltd.Inventor: Sumiaki MATSUO
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Publication number: 20210060228Abstract: A dialysis base unit that is provided separately from a dialysate supply device for delivering dialysate and performs hemodialysis using the dialysate delivered from the dialysate supply device. The dialysis base unit includes a dialysate supply device identifying unit capable of identifying the dialysate supply device connected to the dialysis base unit. A dialysis system includes the dialysate supply device for delivering dialysate and the dialysis base unit.Type: ApplicationFiled: October 26, 2018Publication date: March 4, 2021Applicant: NIKKISO CO., LTD.Inventors: Sumiaki MATSUO, Fumihiko ISHIZAKI, Hiroyuki KAWAJIRI
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Publication number: 20200121844Abstract: A blood purification apparatus is provided in which waste liquid is prevented from flowing through an ultrafiltration pump during ultrafiltration so that the performance and accuracy of ultrafiltration can be maintained over a long period. The blood purification apparatus includes an ultrafiltration line one end of which is connected to a dialysate introduction line at a position on a downstream side with respect to a duplex pump. The ultrafiltration line is provided with the ultrafiltration pump. The ultrafiltration pump is capable of performing ultrafiltration by drawing dialysate in the dialysate introduction line through the ultrafiltration line such that the volume of the dialysate to be introduced into a dialyzer becomes smaller than the volume of waste liquid to be drained from the dialyzer.Type: ApplicationFiled: December 17, 2019Publication date: April 23, 2020Inventors: Fumihiko Ishizaki, Sumiaki Matsuo
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Publication number: 20190217001Abstract: There is provided a blood purification apparatus with which the efficiency of dialysate purification can be improved and the reduction in the amount of electrolytes contained in dialysate and necessary for treatment can be suppressed. The blood purification apparatus includes a storage device capable of storing a predetermined amount of dialysate that is necessary for blood purification treatment, a dialysate circulation line through which the dialysate is allowed to circulate by introducing the dialysate in the storage device into the dialyzer and draining waste liquid from the dialyzer into the storage device, and the dialysate purification device that purifies the dialysate in the dialysate circulation line. A treatment state in which the dialysate is allowed to be introduced into the dialyzer without flowing through the dialysate purification device and a purification state in which the dialysate is allowed to be purified by the dialysate purification device are taken switchably.Type: ApplicationFiled: March 21, 2019Publication date: July 18, 2019Inventors: Satoru Kawarabayashi, Sumiaki Matsuo
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Patent number: 10314961Abstract: A dialysate-extracting apparatus is provided in which scattering of dialysate that may occur when an opening-and-closing device is detached from a collecting port can be prevented and the cleanliness of the collecting port can be assuredly maintained. The dialysate-extracting apparatus includes a dialysate-extracting device connected to a dialysate flow route and having a collecting port from which dialysate flowing in the dialysate flow route is collectable, and an opening-and-closing device detachable from and attachable to the dialysate-extracting device in such a manner as to open and close the collecting port and including a seal portion that seals the collecting port in a closed state. When the opening-and-closing device is detached from the dialysate-extracting device, a part of the opening-and-closing device that is on an inner side with respect to the seal portion is bendable and displaceable toward the collecting port.Type: GrantFiled: December 20, 2016Date of Patent: June 11, 2019Assignee: Nikkiso Company LimitedInventors: Fumihiko Ishizaki, Sumiaki Matsuo, Tadashi Iwahori
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Patent number: 10300191Abstract: A blood purification apparatus comprising: a blood circuit including an arterial blood circuit and a venous blood circuit and that is capable of extracorporeally circulating blood of a patient from a distal end of the arterial blood circuit to a distal end of the venous blood circuit; a blood purification device provided between the arterial and the venous blood circuit of the blood circuit and that is capable of purifying the blood flowing in the blood circuit; a dialysate introduction line for introducing dialysate into the blood purification device and a dialysate drain line for discharging drain liquid from the blood purification device; a liquid delivery pump provided to the dialysate introduction line and that is capable of causing the dialysate in the dialysate introduction line to flow; a heating device that is capable of heating the dialysate to be introduced from the dialysate introduction line into the blood purification device; a temperature-detecting device that is capable of detecting a temperatType: GrantFiled: January 18, 2018Date of Patent: May 28, 2019Assignee: Nikkiso Company LimitedInventors: Hiroaki Mochizuki, Harutoshi Okabe, Sumiaki Matsuo
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Patent number: 10046104Abstract: A peristaltic pump includes a mounting concave section 8a on which a peristaltically-actuated tube connected to an arterial blood circuit is mountable; a roller which compresses the peristaltically-actuated tube mounted on the mounting concave section in a radial direction and causes the peristaltically-actuated tube to be peristaltically actuated in a longitudinal direction such that a liquid therein is flowable in the arterial blood circuit; a load sensor that is able to detect displacement of the peristaltically-actuated tube 1a mounted on the mounting concave section in the radial direction; and blockage detecting means that is able to detect a blockage of the arterial blood circuit based on the displacement detected by the load sensor.Type: GrantFiled: April 16, 2015Date of Patent: August 14, 2018Assignee: NIKKISO COMPANY LIMITEDInventors: Sumiaki Matsuo, Kunihiko Akita
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Publication number: 20180140766Abstract: A blood purification apparatus comprising: a blood circuit including an arterial blood circuit and a venous blood circuit and that is capable of extracorporeally circulating blood of a patient from a distal end of the arterial blood circuit to a distal end of the venous blood circuit; a blood purification device provided between the arterial and the venous blood circuit of the blood circuit and that is capable of purifying the blood flowing in the blood circuit; a dialysate introduction line for introducing dialysate into the blood purification device and a dialysate drain line for discharging drain liquid from the blood purification device; a liquid delivery pump provided to the dialysate introduction line and that is capable of causing the dialysate in the dialysate introduction line to flow; a heating device that is capable of heating the dialysate to be introduced from the dialysate introduction line into the blood purification device; a temperature-detecting device that is capable of detecting a temperatType: ApplicationFiled: January 18, 2018Publication date: May 24, 2018Inventors: Hiroaki Mochizuki, Harutoshi Okabe, Sumiaki Matsuo
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Patent number: 9951766Abstract: A pressure detection device of a liquid flow route includes; displacement detecting means that detects displacement of a peristaltically-actuated tube in the radial direction; pressure calculating means that is able to calculate blood removal pressure based on the displacement of the peristaltically-actuated tube; closed flow route forming means that is able to form a closed flow route which includes a portion at which the displacement detecting means is disposed; pressure changing means that is able to arbitrarily change the pressure in the closed flow route; pressure detection means that is able to detect pressure change in the closed flow route; and calibration curve acquiring means that is able to produce and acquire a calibration curve with which the displacement detecting means and the pressure calculating means are calibrated by a relationship between the pressure change detected by the pressure detection means and a detection value of the displacement detecting means.Type: GrantFiled: April 16, 2015Date of Patent: April 24, 2018Assignee: NIKKISO COMPANY LIMITEDInventors: Kunihiko Akita, Sumiaki Matsuo
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Patent number: 9662433Abstract: A pressure detection device of a liquid flow route is provided which detects a pressure of an arterial blood circuit consisting of a flexible tube, a portion of which is connected to a peristaltically-actuated tube that can cause an internal liquid to flow by being compressed in a radial direction and being peristaltically actuated in a longitudinal direction in a roller of a blood pump, and which enables a predetermined liquid to be circulated. The pressure detection device includes a load sensor that detects radial displacement of the peristaltically-actuated tube.Type: GrantFiled: February 21, 2014Date of Patent: May 30, 2017Assignee: NIKKISO COMPANY LIMITEDInventors: Sumiaki Matsuo, Kazumi Yokoyama, Kunihiko Akita
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Publication number: 20170100530Abstract: A dialysate-extracting apparatus is provided in which scattering of dialysate that may occur when an opening-and-closing device is detached from a collecting port can be prevented and the cleanliness of the collecting port can be assuredly maintained. The dialysate-extracting apparatus includes a dialysate-extracting device connected to a dialysate flow route and having a collecting port from which dialysate flowing in the dialysate flow route is collectable, and an opening-and-closing device detachable from and attachable to the dialysate-extracting device in such a manner as to open and close the collecting port and including a seal portion that seals the collecting port in a closed state. When the opening-and-closing device is detached from the dialysate-extracting device, a part of the opening-and-closing device that is on an inner side with respect to the seal portion is bendable and displaceable toward the collecting port.Type: ApplicationFiled: December 20, 2016Publication date: April 13, 2017Inventors: Fumihiko Ishizaki, Sumiaki Matsuo, Tadashi Iwahori
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Publication number: 20150238677Abstract: A pressure detection device of a liquid flow route includes; displacement detecting means that detects displacement of a peristaltically-actuated tube in the radial direction; pressure calculating means that is able to calculate blood removal pressure based on the displacement of the peristaltically-actuated tube; closed flow route forming means that is able to form a closed flow route which includes a portion at which the displacement detecting means is disposed; pressure changing means that is able to arbitrarily change the pressure in the closed flow route; pressure detection means that is able to detect pressure change in the closed flow route; and calibration curve acquiring means that is able to produce and acquire a calibration curve with which the displacement detecting means and the pressure calculating means are calibrated by a relationship between the pressure change detected by the pressure detection means and a detection value of the displacement detecting means.Type: ApplicationFiled: April 16, 2015Publication date: August 27, 2015Inventors: Kunihiko Akita, Sumiaki Matsuo
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Publication number: 20150217040Abstract: A peristaltic pump includes a mounting concave section 8a on which a peristaltically-actuated tube connected to an arterial blood circuit is mountable; a roller which compresses the peristaltically-actuated tube mounted on the mounting concave section in a radial direction and causes the peristaltically-actuated tube to be peristaltically actuated in a longitudinal direction such that a liquid therein is flowable in the arterial blood circuit; a load sensor that is able to detect displacement of the peristaltically-actuated tube 1a mounted on the mounting concave section in the radial direction; and blockage detecting means that is able to detect a blockage of the arterial blood circuit based on the displacement detected by the load sensor.Type: ApplicationFiled: April 16, 2015Publication date: August 6, 2015Inventors: Sumiaki Matsuo, Kunihiko Akita
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Publication number: 20140219829Abstract: A pressure detection device of a liquid flow route is provided which detects a pressure of an arterial blood circuit consisting of a flexible tube, a portion of which is connected to a peristaitically-actuated tube that can cause an internal liquid to flow by being compressed in a radial direction and being peristaltically actuated in a longitudinal direction in a roller of a blood pump, and which enables a predetermined liquid to be circulated. The pressure detection device includes a load sensor that detects radial displacement of the peristaltically-actuated tube.Type: ApplicationFiled: February 21, 2014Publication date: August 7, 2014Applicant: Nikkiso Company LimitedInventors: Sumiaki Matsuo, Kazumi Yokoyama, Kunihiko Akita