Patents by Inventor Yusuke TOKIMIZU
Yusuke TOKIMIZU 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: 12268803Abstract: A blood purifier includes a porous molded body; exhibits an excellent blood compatibility wherein platelet adherence is inhibited and exhibits a good cytokine adsorption capacity and a low pressure loss before and after blood treatment; and can be safely used. A blood purifier includes a main vessel and a porous molded body housed in the main vessel. The porous molded body contains a hydrophobic polymer and a hydrophilic polymer. The amount of low-melting-point water per 1 g of dry weight of the porous molded body is 0.12 g to 2.00 g. The contact change ratio for the porous molded body is 0% to 0.2%. The ratio L/D is 1.00 to 2.30 where, for the region taken up by the porous molded body in the main vessel, L is the length in the flow direction and D is the circle-equivalent diameter of the cross section in the direction perpendicular to the flow direction.Type: GrantFiled: March 27, 2020Date of Patent: April 8, 2025Assignee: ASAHI KASEI MEDICAL CO., LTD.Inventors: Teruhiko Oishi, Yusuke Tokimizu, Keitaro Matsuyama, Naoki Morita
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Patent number: 11850346Abstract: Provided are beads for blood processing having porous beads and a polymer carried on the surface of the porous beads, wherein: the porous beads are configured from at least one resin selected from the group consisting of acrylic resins, styrene resins, and cellulose resins; and the polymer includes a specific monomer defined in the description as a monomer unit.Type: GrantFiled: June 27, 2019Date of Patent: December 26, 2023Assignee: ASAHI KASEI MEDICAL CO., LTD.Inventors: Yusuke Tokimizu, Satoru Inoue, Yoshihiro Hatanaka
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Patent number: 11850345Abstract: Provided are beads for blood processing having porous beads and a polymer carried on the surface of the porous beads, wherein: the porous beads are configured from at least one resin selected from the group consisting of acrylic resins, styrene resins, and cellulose resins; and the polymer includes a specific monomer defined in the description as a monomer unit.Type: GrantFiled: February 5, 2021Date of Patent: December 26, 2023Assignee: ASAHI KASEI MEDICAL CO., LTD.Inventors: Yusuke Tokimizu, Satoru Inoue, Yoshihiro Hatanaka
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Publication number: 20220168490Abstract: Provided is a blood purifier which has a porous molded body with good phosphorus adsorption, which has good cytokine adsorption performance, no hemolysis, and can be used safely. The blood purifier has a porous molded body having a low-melting-point moisture content per gram of dry weight of 0.12 g or more and 1.35 g or less. After three and six months from sealing of a saline solution for injection into the blood purifier, the number of microparticles greater than or equal to 10 ?m is 25 or less and the number of microparticles greater than or equal to 25 ?m is three or less in 1 mL of the saline solution for injection.Type: ApplicationFiled: March 27, 2020Publication date: June 2, 2022Applicant: ASAHI KASEI MEDICAL CO., LTD.Inventors: Teruhiko OISHI, Yusuke TOKIMIZU, Keitaro MATSUYAMA, Naoki MORITA
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Publication number: 20220111133Abstract: A blood purifier includes a porous molded body; exhibits an excellent blood compatibility wherein platelet adherence is inhibited and exhibits a good cytokine adsorption capacity and a low pressure loss before and after blood treatment; and can be safely used. A blood purifier includes a main vessel and a porous molded body housed in the main vessel. The porous molded body contains a hydrophobic polymer and a hydrophilic polymer. The amount of low-melting-point water per 1 g of dry weight of the porous molded body is 0.12 g to 2.00 g. The contact change ratio for the porous molded body is 0% to 0.2%. The ratio L/D is 1.00 to 2.30 where, for the region taken up by the porous molded body in the main vessel, L is the length in the flow direction and D is the circle-equivalent diameter of the cross section in the direction perpendicular to the flow direction.Type: ApplicationFiled: March 27, 2020Publication date: April 14, 2022Applicant: Asahi Kasei Medical Co., Ltd.Inventors: Teruhiko OISHI, Yusuke TOKIMIZU, Keitaro MATSUYAMA, Naoki MORITA
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Publication number: 20220105454Abstract: Provided is a blood purifier which includes a porous formed body and which has excellent blood compatibility, in which platelets are unlikely to adhere, has good cytokine adsorption capacity, and low pressure loss before and after treating blood, and can be safely used. Disclosed is a blood purifier having a body container, and a porous formed body accommodated in the body container. The porous formed body contains a hydrophobic polymer and a hydrophilic polymer, the low-melting-point water content per 1 g of dry weight of the porous formed body is 0.12-2.00 g, the rate of contact change of the porous formed body is 0-0.2%, and the adhering amount of platelets per 1 mL of blood is 0.400 billion/mL or less when brining the blood into contact with the porous formed body.Type: ApplicationFiled: March 27, 2020Publication date: April 7, 2022Applicant: ASAHI KASEI MEDICAL CO., LTD.Inventors: Teruhiko OISHI, Yusuke TOKIMIZU, Keitaro MATSUYAMA, Naoki MORITA
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Publication number: 20210205781Abstract: Provided are beads for blood processing having porous beads and a polymer carried on the surface of the porous beads, wherein: the porous beads are configured from at least one resin selected from the group consisting of acrylic resins, styrene resins, and cellulose resins; and the polymer includes a specific monomer defined in the description as a monomer unit.Type: ApplicationFiled: February 5, 2021Publication date: July 8, 2021Applicant: Asahi Kasei Medical Co., Ltd.Inventors: Yusuke TOKIMIZU, Satoru INOUE, Yoshihiro HATANAKA
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Publication number: 20210170362Abstract: Provided are beads for blood processing having porous beads and a polymer carried on the surface of the porous beads, wherein: the porous beads are configured from at least one resin selected from the group consisting of acrylic resins, styrene resins, and cellulose resins; and the polymer includes a specific monomer defined in the description as a monomer unit.Type: ApplicationFiled: June 27, 2019Publication date: June 10, 2021Applicant: Asahi Kasei Medical Co., Ltd.Inventors: Yusuke TOKIMIZU, Satoru INOUE, Yoshihiro HATANAKA