Patents by Inventor Shojiro Matsuda
Shojiro Matsuda 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: 8741969Abstract: An object of the present invention is to provide an anti-adhesion membrane that has no toxicity to a living body, has flexibility allowing itself to fit an affected part as a hydrated gel, is uniformly crosslinked, and is immediately absorbed in a living body after maintaining its shape in the living body for a certain period of time. The present invention provides anti-adhesion material, which comprises a thermally crosslinked gelatin film, and has a water content of 60 to 85% calculated by the following formula (1): water content (%)=[(Ws?Wd)/Ws]×100(%)??(1), in the formula (1), Ws representing a weight (wet weight) of the anti-adhesion material immersed in a phosphate buffered saline solution at a temperature of 25° C. for one hour, and Wd representing a weight (dry weight) of the anti-adhesion material dried completely using a vacuum drying apparatus.Type: GrantFiled: August 2, 2006Date of Patent: June 3, 2014Assignee: Gunze LimitedInventors: Hitoshi Otani, Shojiro Matsuda, Tsuguyoshi Taira, Noriyuki Morikawa
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Patent number: 8703627Abstract: An antiadhesive material that is excellent in biocompatibility and bioabsorbability, as well as excellent strength in suturing and bonding, is provided. A reinforcing material 12 made of a biodegradable polymer is placed in a gelatin solution so that the reinforcing material 12 is impregnated with the solution, and the gelatin is caused to gelate and dried. By so doing, an antiadhesive material in which a gelatin film 11 and the reinforcing material 12 are integrated is obtained. The reinforcing material 12 preferably is arranged in a portion of the gelatin film 11 to be subjected to suturing, and preferably is arranged along a periphery of the gelatin film 11. The gelatin film 11 preferably is a cross-linked gelatin film, and the reinforcing material 12 preferably is a nonwoven fabric.Type: GrantFiled: June 12, 2002Date of Patent: April 22, 2014Assignees: Gunze Limited, JMS Co., Ltd.Inventors: Shojiro Matsuda, Yoshimi Tanaka, Yoshito Ikada
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Patent number: 8496714Abstract: The present invention aims to provide a material for revascularization which enables the regeneration of a blood vessel at an extremely high efficiency by being transplanted into a defect of the blood vessel. The present invention provides a tubular material for revascularization comprising a foamed body comprising a bioabsorbable material, a reinforcing member comprising a bioabsorbable material for reinforcing the foamed body, and a reinforcing yarn comprising a bioabsorbable material for reinforcing the foamed body, wherein the reinforcing yarn and the reinforcing member are located at the center or outer face of the foamed body, the inner face thereof is the foamed body, the reinforcing yarn is wound around in a spiral-shaped, ring-shaped or X-shaped manner, and the reinforcing yarn comprises a glycolide-?-caprolactone copolymer.Type: GrantFiled: July 28, 2009Date of Patent: July 30, 2013Assignee: Gunze LimitedInventors: Goki Matsumura, Yoshito Ikada, Yuki Sakamoto, Shojiro Matsuda
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Patent number: 8372433Abstract: The scaffold for culturing a cardiovascular tissue of the present invention is a scaffold for culturing a cardiovascular tissue, which is tubular, and comprises a foamed polymer comprising a bioabsorbable material reinforced with a reinforcing material comprising a bioabsorbable material, the foamed polymer comprising lactide (D, L, DL isomer)-?-caprolactone copolymer containing lactide (D, L, DL isomer) in a content of 50 to 54 mole % and ?-caprolactone in a content of 50 to 46 mole %, and the reinforcing material being covered with the foamed polymer.Type: GrantFiled: January 18, 2008Date of Patent: February 12, 2013Assignee: Gunze LimitedInventors: Toshiharu Shinoka, Goki Matsumura, Yoshito Ikada, Shojiro Matsuda, Yuki Sakamoto, Tsuguyoshi Taira
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Publication number: 20110172757Abstract: The present invention aims to provide a material for revascularization which enables the regeneration of a blood vessel at an extremely high efficiency by being transplanted into a defect of the blood vessel. The present invention provides a tubular material for revascularization comprising a foamed body comprising a bioabsorbable material, a reinforcing member comprising a bioabsorbable material for reinforcing the foamed body, and a reinforcing yarn comprising a bioabsorbable material for reinforcing the foamed body, wherein the reinforcing yarn and the reinforcing member are located at the center or outer face of the foamed body, the inner face thereof is the foamed body, the reinforcing yarn is wound around in a spiral-shaped, ring-shaped or X-shaped manner, and the reinforcing yarn comprises a glycolide-?-caprolactone copolymer.Type: ApplicationFiled: July 28, 2009Publication date: July 14, 2011Applicant: GUNZE LIMITEDInventors: Goki Matsumura, Yoshito Ikada, Yuki Sakamoto, Shojiro Matsuda
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Publication number: 20110038911Abstract: It is an object of the invention to provide a prosthetic material for living organs, which can sufficiently withstand the arterial pressure and thereby can prevent leakage of blood or rupture of blood vessels, and which serves as a scaffold for vascular tissue regeneration, and does not necessitate repeated surgeries or the like. The invention is a prosthetic material for living organs, which comprises a laminate including a film layer and a porous layer, said film layer comprising a bioabsorbable material, said porous layer comprising a bioabsorbable material.Type: ApplicationFiled: July 25, 2008Publication date: February 17, 2011Applicant: GUNZE LIMITEDInventors: Yuki Sakamoto, Shojiro Matsuda, Toshiharu Shinoka, Yuki Ichihara, Yoshito Ikada
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Patent number: 7718556Abstract: A medical film that is excellent in biocompatibility and bioabsorbability and has an excellent strength in suturing and bonding is provided. A reinforcing material 12 made of a biodegradable polymer is placed in a gelatin solution so as to allow the solution to infiltrate in the reinforcing material 12 and then the gelatin is dried. This allows the gelatin that has infiltrated entirely in an internal part of the reinforcing material 12 to gel, thereby forming a gelatin film 11. Thus, a medical film 1 in which the reinforcing material 12 and the gelatin film 11 are integrated is obtained. The gelatin film 11 preferably is a cross-linked gelatin film.Type: GrantFiled: December 8, 2003Date of Patent: May 18, 2010Assignees: Gunze Limited, JMS Co., Ltd.Inventors: Shojiro Matsuda, Hitoshi Ohtani, Yoshimi Tanaka, Hideki Tadokoro
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Publication number: 20100055781Abstract: The scaffold for culturing a cardiovascular tissue of the present invention is a scaffold for culturing a cardiovascular tissue, which is tubular, and comprises a foamed polymer comprising a bioabsorbable material reinforced with a reinforcing material comprising a bioabsorbable material, the foamed polymer comprising lactide (D, L, DL isomer)-?-caprolactone copolymer containing lactide (D, L, DL isomer) in a content of 50 to 54 mole % and ?-caprolactone in a content of 50 to 46 mole %, and the reinforcing material being covered with the foamed polymer.Type: ApplicationFiled: January 18, 2008Publication date: March 4, 2010Applicant: GUNZE LIMITEDInventors: Toshiharu Shinoka, Goki Matsumura, Yoshito Ikada, Shojiro Matsuda, Yuki Sakamoto, Tsuguyoshi Taira
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Publication number: 20100049250Abstract: It is an object of the present invention to provide a suture reinforcement material for an automatic suturing device, which has excellent loadability into an automatic suturing device and excellent cuttability with a cutter. The present invention is a suture reinforcement material for an automatic suturing device, which comprises a tubular body comprising an inner layer and an outer layer, the inner layer comprising a nonwoven fabric, the outer layer comprising a foamed polymer, wherein the nonwoven fabric of the inner layer and the foamed polymer of the outer layer are integrated together.Type: ApplicationFiled: December 21, 2007Publication date: February 25, 2010Applicant: GUNZE LIMITEDInventors: Shojiro Matsuda, Yuki Sakamoto
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Publication number: 20090099268Abstract: An object of the present invention is to provide an anti-adhesion membrane that has no toxicity to a living body, has flexibility allowing itself to fit an affected part as a hydrated gel, is uniformly crosslinked, and is immediately absorbed in a living body after maintaining its shape in the living body for a certain period of time. The present invention provides anti-adhesion material, which comprises a thermally crosslinked gelatin film, and has a water content of 60 to 85% calculated by the following formula (1): water content (%)=[(Ws?Wd)/Ws]×100(%)??(1), in the formula (1), Ws representing a weight (wet weight) of the anti-adhesion material immersed in a phosphate buffered saline solution at a temperature of 25° C. for one hour, and Wd representing a weight (dry weight) of the anti-adhesion material dried completely using a vacuum drying apparatus.Type: ApplicationFiled: August 2, 2006Publication date: April 16, 2009Applicant: GUNZE LIMITEDInventors: Hitoshi Otani, Shojiro Matsuda, Tsuguyoshi Taira, Noriyuki Morikawa
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Publication number: 20080176206Abstract: The substrate for culturing a cardiovascular tissue of the present invention is a substrate for culturing a cardiovascular tissue, which is tubular, and comprises a foam comprising a bioabsorbable material reinforced with a reinforcing material comprising a bioabsorbable material, the foam comprising lactide (D, L, DL isomer)-?-caprolactone copolymer containing lactide (D, L, DL isomer) in a content of 50 to 54 mole % and ?-caprolactone in a content of 50 to 46 mole %, and the reinforcing material being covered with the foam.Type: ApplicationFiled: June 27, 2007Publication date: July 24, 2008Inventors: Toshiharu Shinoka, Goki Matsumura, Yoshito Ikada, Shojiro Matsuda, Yuki Sakamoto, Tsuguyoshi Taira
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Publication number: 20060094318Abstract: A medical film that is excellent in biocompatibility and bioabsorbability and has an excellent strength in suturing and bonding is provided. A reinforcing material 12 made of a biodegradable polymer is placed in a gelatin solution so as to allow the solution to infiltrate in the reinforcing material 12 and then the gelatin is dried. This allows the gelatin that has infiltrated entirely in an internal part of the reinforcing material 12 to gel, thereby forming a gelatin film 11. Thus, a medical film 1 in which the reinforcing material 12 and the gelatin film 11 are integrated is obtained. The gelatin film 11 preferably is a cross-linked gelatin film.Type: ApplicationFiled: December 8, 2003Publication date: May 4, 2006Applicants: Gunze Limited, JMS Co., Ltd.Inventors: Shojiro Matsuda, Hitoshi Ohtani, Yoshimi Tanaka, Hideki Tadokoro
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Publication number: 20040137179Abstract: An antiadhesive material that is excellent in biocompatibility and bioabsorbability, as well as excellent strength in suturing and bonding, is provided. A reinforcing material 12 made of a biodegradable polymer is placed in a gelatin solution so that the reinforcing material 12 is impregnated with the solution, and the gelatin is caused to gelate and dried. By so doing, an antiadhesive material in which a gelatin film 11 and the reinforcing material 12 are integrated is obtained. The reinforcing material 12 preferably is arranged in a portion of the gelatin film 11 to be subjected to suturing, and preferably is arranged along a periphery of the, gelatin film 11. The gelatin film 11 preferably is a cross-linked gelatin film, and the reinforcing material 12 preferably is a nonwoven fabric.Type: ApplicationFiled: December 11, 2003Publication date: July 15, 2004Inventors: Shojiro Matsuda, Yoshimi Tanaka, Yoshito Ikeda