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).

  • Patent number: 8741969
    Abstract: 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: Grant
    Filed: August 2, 2006
    Date of Patent: June 3, 2014
    Assignee: Gunze Limited
    Inventors: Hitoshi Otani, Shojiro Matsuda, Tsuguyoshi Taira, Noriyuki Morikawa
  • Patent number: 8703627
    Abstract: 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: Grant
    Filed: June 12, 2002
    Date of Patent: April 22, 2014
    Assignees: Gunze Limited, JMS Co., Ltd.
    Inventors: Shojiro Matsuda, Yoshimi Tanaka, Yoshito Ikada
  • Patent number: 8496714
    Abstract: 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: Grant
    Filed: July 28, 2009
    Date of Patent: July 30, 2013
    Assignee: Gunze Limited
    Inventors: Goki Matsumura, Yoshito Ikada, Yuki Sakamoto, Shojiro Matsuda
  • Patent number: 8372433
    Abstract: 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: Grant
    Filed: January 18, 2008
    Date of Patent: February 12, 2013
    Assignee: Gunze Limited
    Inventors: Toshiharu Shinoka, Goki Matsumura, Yoshito Ikada, Shojiro Matsuda, Yuki Sakamoto, Tsuguyoshi Taira
  • Publication number: 20110172757
    Abstract: 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: Application
    Filed: July 28, 2009
    Publication date: July 14, 2011
    Applicant: GUNZE LIMITED
    Inventors: Goki Matsumura, Yoshito Ikada, Yuki Sakamoto, Shojiro Matsuda
  • Publication number: 20110038911
    Abstract: 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: Application
    Filed: July 25, 2008
    Publication date: February 17, 2011
    Applicant: GUNZE LIMITED
    Inventors: Yuki Sakamoto, Shojiro Matsuda, Toshiharu Shinoka, Yuki Ichihara, Yoshito Ikada
  • Patent number: 7718556
    Abstract: 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: Grant
    Filed: December 8, 2003
    Date of Patent: May 18, 2010
    Assignees: Gunze Limited, JMS Co., Ltd.
    Inventors: Shojiro Matsuda, Hitoshi Ohtani, Yoshimi Tanaka, Hideki Tadokoro
  • Publication number: 20100055781
    Abstract: 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: Application
    Filed: January 18, 2008
    Publication date: March 4, 2010
    Applicant: GUNZE LIMITED
    Inventors: Toshiharu Shinoka, Goki Matsumura, Yoshito Ikada, Shojiro Matsuda, Yuki Sakamoto, Tsuguyoshi Taira
  • Publication number: 20100049250
    Abstract: 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: Application
    Filed: December 21, 2007
    Publication date: February 25, 2010
    Applicant: GUNZE LIMITED
    Inventors: Shojiro Matsuda, Yuki Sakamoto
  • Publication number: 20090099268
    Abstract: 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: Application
    Filed: August 2, 2006
    Publication date: April 16, 2009
    Applicant: GUNZE LIMITED
    Inventors: Hitoshi Otani, Shojiro Matsuda, Tsuguyoshi Taira, Noriyuki Morikawa
  • Publication number: 20080176206
    Abstract: 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: Application
    Filed: June 27, 2007
    Publication date: July 24, 2008
    Inventors: Toshiharu Shinoka, Goki Matsumura, Yoshito Ikada, Shojiro Matsuda, Yuki Sakamoto, Tsuguyoshi Taira
  • Publication number: 20060094318
    Abstract: 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: Application
    Filed: December 8, 2003
    Publication date: May 4, 2006
    Applicants: Gunze Limited, JMS Co., Ltd.
    Inventors: Shojiro Matsuda, Hitoshi Ohtani, Yoshimi Tanaka, Hideki Tadokoro
  • Publication number: 20040137179
    Abstract: 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: Application
    Filed: December 11, 2003
    Publication date: July 15, 2004
    Inventors: Shojiro Matsuda, Yoshimi Tanaka, Yoshito Ikeda