Patents by Inventor Kohei Kato
Kohei Kato 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: 6992312Abstract: A medical charged particle irradiation apparatus capable of irradiation from upward and horizontal directions and performing a preparing/ascertaining work without any separate device such as a moving capsule or the like comprising a patient's bed, on which a patient lies, a transport equipment for injecting and transporting charged particle beams toward the patient's bed, an irradiation field forming device for forming an irradiation field for the beams transported by the transport equipment, and a gantry provided to be rotatable about an axis of rotation, and wherein the irradiation field forming device is eccentrically arranged such that an axis of irradiation passes a position different from the axis of rotation, and the patient's bed is arranged on an opposite side of the transport equipment to a plane, which contains the axis of rotation and is substantially perpendicular to the axis of irradiation.Type: GrantFiled: April 2, 2004Date of Patent: January 31, 2006Assignee: Hitachi, Ltd.Inventors: Masaki Yanagisawa, Hiroshi Akiyama, Kohei Kato
-
Patent number: 6979832Abstract: A medical charged particle irradiation apparatus capable of irradiation from upward and horizontal directions and performing a preparing/ascertaining work without any separate device such as a moving capsule or the like comprising a patient's bed, on which a patient lies, a transport equipment for injecting and transporting charged particle beams toward the patient's bed, an irradiation field forming device for forming an irradiation field for the beams transported by the transport equipment, and a gantry provided to be rotatable about an axis of rotation, and wherein the irradiation field forming device is eccentrically arranged such that an axis of irradiation passes a position different from the axis of rotation, and the patient's bed is arranged on an opposite side of the transport equipment to a plane, which contains the axis of rotation and is substantially perpendicular to the axis of irradiation.Type: GrantFiled: April 2, 2004Date of Patent: December 27, 2005Assignee: Hitachi, Ltd.Inventors: Masaki Yanagisawa, Hiroshi Akiyama, Kohei Kato
-
Patent number: 6953943Abstract: A medical charged particle irradiation apparatus capable of irradiation from upward and horizontal directions and performing a preparing/ascertaining work without any separate device such as a moving capsule or the like comprising a patient's bed, on which a patient lies, a transport equipment for injecting and transporting charged particle beams toward the patient's bed, an irradiation field forming device for forming an irradiation field for the beams transported by the transport equipment, and a gantry provided to be rotatable about an axis of rotation, and wherein the irradiation field forming device is eccentrically arranged such that an axis of irradiation passes a position different from the axis of rotation, and the patient's bed is arranged on an opposite side of the transport equipment to a plane, which contains the axis of rotation and is substantially perpendicular to the axis of irradiation.Type: GrantFiled: September 25, 2002Date of Patent: October 11, 2005Assignee: Hitachi, Ltd.Inventors: Masaki Yanagisawa, Hiroshi Akiyama, Kohei Kato
-
Patent number: 6931100Abstract: The invention is intended to shorten a positioning time required for forming an irradiation area with high accuracy using a number of leaf plates, and to reduce physical and mental burdens imposed on patients. A multi-leaf collimator comprises leaf plate driving body each including a plurality of movable leaf plates and provided respectively on one side and the other side, the plurality of leaf plates of the leaf plate driver on one side and the plurality of leaf plates of the leaf plate driver on the other side being disposed in an opposing relation to form an irradiation field of a radiation beam between the opposing leaf plates. Each of the leaf plate driving body includes a motor provided in common to the plurality of leaf plates. Driving force of the motor can be transmitted to the plurality of leaf plates at the same time through a pinion gear, upper and lower air cylinders, and upper and lower guides. Also, the driving force can be cut off selectively for each leaf plate.Type: GrantFiled: October 12, 2004Date of Patent: August 16, 2005Assignee: Hitachi, Ltd.Inventors: Kohei Kato, Hiroshi Akiyama, Masaki Yanagisawa
-
Publication number: 20050063516Abstract: The invention is intended to shorten a positioning time required for forming an irradiation area with high accuracy using a number of leaf plates, and to reduce physical and mental burdens imposed on patients. A multi-leaf collimator comprises leaf plate driving body each including a plurality of movable leaf plates and provided respectively on one side and the other side, the plurality of leaf plates of the leaf plate driver on one side and the plurality of leaf plates of the leaf plate driver on the other side being disposed in an opposing relation to form an irradiation field of a radiation beam between the opposing leaf plates. Each of the leaf plate driving body includes a motor provided in common to the plurality of leaf plates. Driving force of the motor can be transmitted to the plurality of leaf plates at the same time through a pinion gear, upper and lower air cylinders, and upper and lower guides. Also, the driving force can be cut off selectively for each leaf plate.Type: ApplicationFiled: October 12, 2004Publication date: March 24, 2005Applicant: Hitachi, Ltd.Inventors: Kohei Kato, Hiroshi Akiyama, Masaki Yanagisawa
-
Publication number: 20050061996Abstract: A medical charged particle irradiation apparatus capable of irradiation from upward and horizontal directions and performing a preparing/ascertaining work without any separate device such as a moving capsule or the like comprising a patient's bed, on which a patient lies, a transport equipment for injecting and transporting charged particle beams toward the patient's bed, an irradiation field forming device for forming an irradiation field for the beams transported by the transport equipment, and a gantry provided to be rotatable about an axis of rotation, and wherein the irradiation field forming device is eccentrically arranged such that an axis of irradiation passes a position different from the axis of rotation, and the patient's bed is arranged on an opposite side of the transport equipment to a plane, which contains the axis of rotation and is substantially perpendicular to the axis of irradiation.Type: ApplicationFiled: November 5, 2004Publication date: March 24, 2005Inventors: Masaki Yanagisawa, Hiroshi Akiyama, Kohei Kato
-
Patent number: 6823045Abstract: The invention is intended to shorten a positioning time required for forming an irradiation area with high accuracy using a number of leaf plates, and to reduce physical and mental burdens imposed on patients. A multi-leaf collimator comprises leaf plate driving body each including a plurality of movable leaf plates and provided respectively on one side and the other side, the plurality of leaf plates of the leaf plate driver on one side and the plurality of leaf plates of the leaf plate driver on the other side being disposed in an opposing relation to form an irradiation field of a radiation beam between the opposing leaf plates. Each of the leaf plate driving body includes a motor provided in common to the plurality of leaf plates. Driving force of the motor can be transmitted to the plurality of leaf plates at the same time through a pinion gear, upper and lower air cylinders, and upper and lower guides. Also, the driving force can be cut off selectively for each leaf plate.Type: GrantFiled: October 2, 2003Date of Patent: November 23, 2004Assignee: Hitachi, Ltd.Inventors: Kohei Kato, Hiroshi Akiyama, Masaki Yanagisawa
-
Patent number: 6819743Abstract: The invention is intended to shorten a positioning time required for forming an irradiation area with high accuracy using a number of leaf plates, and to reduce physical and mental burdens imposed on patients. A multi-leaf collimator comprises leaf plate driving body each including a plurality of movable leaf plates and provided respectively on one side and the other side, the plurality of leaf plates of the leaf plate driver on one side and the plurality of leaf plates of the leaf plate driver on the other side being disposed in an opposing relation to form an irradiation field of a radiation beam between the opposing leaf plates. Each of the leaf plate driving body includes a motor provided in common to the plurality of leaf plates. Driving force of the motor can be transmitted to the plurality of leaf plates at the same time through a pinion gear, upper and lower air cylinders, and upper and lower guides. Also, the driving force can be cut off selectively for each leaf plate.Type: GrantFiled: October 2, 2003Date of Patent: November 16, 2004Assignee: Hitachi, Ltd.Inventors: Kohei Kato, Hiroshi Akiyama, Masaki Yanagisawa
-
Publication number: 20040183034Abstract: A medical charged particle irradiation apparatus capable of irradiation from upward and horizontal directions and performing a preparing/ascertaining work without any separate device such as a moving capsule or the like comprising a patient's bed, on which a patient lies, a transport equipment for injecting and transporting charged particle beams toward the patient's bed, an irradiation field forming device for forming an irradiation field for the beams transported by the transport equipment, and a gantry provided to be rotatable about an axis of rotation, and wherein the irradiation field forming device is eccentrically arranged such that an axis of irradiation passes a position different from the axis of rotation, and the patient's bed is arranged on an opposite side of the transport equipment to a plane, which contains the axis of rotation and is substantially perpendicular to the axis of irradiation.Type: ApplicationFiled: April 2, 2004Publication date: September 23, 2004Inventors: Masaki Yanagisawa, Hiroshi Akiyama, Kohei Kato
-
Publication number: 20040183035Abstract: A medical charged particle irradiation apparatus capable of irradiation from upward and horizontal directions and performing a preparing/ascertaining work without any separate device such as a moving capsule or the like comprising a patient's bed, on which a patient lies, a transport equipment for injecting and transporting charged particle beams toward the patient's bed, an irradiation field forming device for forming an irradiation field for the beams transported by the transport equipment, and a gantry provided to be rotatable about an axis of rotation, and wherein the irradiation field forming device is eccentrically arranged such that an axis of irradiation passes a position different from the axis of rotation, and the patient's bed is arranged on an opposite side of the transport equipment to a plane, which contains the axis of rotation and is substantially perpendicular to the axis of irradiation.Type: ApplicationFiled: April 2, 2004Publication date: September 23, 2004Inventors: Masaki Yanagisawa, Hiroshi Akiyama, Kohei Kato
-
Patent number: 6792078Abstract: The invention is intended to shorten a positioning time required for forming an irradiation area with high accuracy using a number of leaf plates, and to reduce physical and mental burdens imposed on patients. A multi-leaf collimator comprises leaf plate driving body each including a plurality of movable leaf plates and provided respectively on one side and the other side, the plurality of leaf plates of the leaf plate driver on one side and the plurality of leaf plates of the leaf plate driver on the other side being disposed in an opposing relation to form an irradiation field of a radiation beam between the opposing leaf plates. Each of the leaf plate driving body includes a motor provided in common to the plurality of leaf plates. Driving force of the motor can be transmitted to the plurality of leaf plates at the same time through a pinion gear, upper and lower air cylinders, and upper and lower guides. Also, the driving force can be cut off selectively for each leaf plate.Type: GrantFiled: August 31, 2001Date of Patent: September 14, 2004Assignee: Hitachi, Ltd.Inventors: Kohei Kato, Hiroshi Akiyama, Masaki Yanagisawa
-
Publication number: 20040062354Abstract: The invention is intended to shorten a positioning time required for forming an irradiation area with high accuracy using a number of leaf plates, and to reduce physical and mental burdens imposed on patients. A multi-leaf collimator comprises leaf plate driving body each including a plurality of movable leaf plates and provided respectively on one side and the other side, the plurality of leaf plates of the leaf plate driver on one side and the plurality of leaf plates of the leaf plate driver on the other side being disposed in an opposing relation to form an irradiation field of a radiation beam between the opposing leaf plates. Each of the leaf plate driving body includes a motor provided in common to the plurality of leaf plates. Driving force of the motor can be transmitted to the plurality of leaf plates at the same time through a pinion gear, upper and lower air cylinders, and upper and lower guides. Also, the driving force can be cut off selectively for each leaf plate.Type: ApplicationFiled: October 2, 2003Publication date: April 1, 2004Applicant: Hitachi, Ltd.Inventors: Kohei Kato, Hiroshi Akiyama, Masaki Yanagisawa
-
Publication number: 20040062353Abstract: The invention is intended to shorten a positioning time required for forming an irradiation area with high accuracy using a number of leaf plates, and to reduce physical and mental burdens imposed on patients. A multi-leaf collimator comprises leaf plate driving body each including a plurality of movable leaf plates and provided respectively on one side and the other side, the plurality of leaf plates of the leaf plate driver on one side and the plurality of leaf plates of the leaf plate driver on the other side being disposed in an opposing relation to form an irradiation field of a radiation beam between the opposing leaf plates. Each of the leaf plate driving body includes a motor provided in common to the plurality of leaf plates. Driving force of the motor can be transmitted to the plurality of leaf plates at the same time through a pinion gear, upper and lower air cylinders, and upper and lower guides. Also, the driving force can be cut off selectively for each leaf plate.Type: ApplicationFiled: October 2, 2003Publication date: April 1, 2004Applicant: Hitachi, Ltd.Inventors: Kohei Kato, Hiroshi Akiyama, Masaki Yanagisawa
-
Publication number: 20030163015Abstract: A medical charged particle irradiation apparatus capable of irradiation from upward and horizontal directions and performing a preparing/ascertaining work without any separate device such as a moving capsule or the like comprising a patient's bed, on which a patient lies, a transport equipment for injecting and transporting charged particle beams toward the patient's bed, an irradiation field forming device for forming an irradiation field for the beams transported by the transport equipment, and a gantry provided to be rotatable about an axis of rotation, and wherein the irradiation field forming device is eccentrically arranged such that an axis of irradiation passes a position different from the axis of rotation, and the patient's bed is arranged on an opposite side of the transport equipment to a plane, which contains the axis of rotation and is substantially perpendicular to the axis of irradiation.Type: ApplicationFiled: September 25, 2002Publication date: August 28, 2003Inventors: Masaki Yanagisawa, Hiroshi Akiyama, Kohei Kato
-
Publication number: 20020101959Abstract: The invention is intended to shorten a positioning time required for forming an irradiation area with high accuracy using a number of leaf plates, and to reduce physical and mental burdens imposed on patients. A multi-leaf collimator comprises leaf plate driving body each including a plurality of movable leaf plates and provided respectively on one side and the other side, the plurality of leaf plates of the leaf plate driver on one side and the plurality of leaf plates of the leaf plate driver on the other side being disposed in an opposing relation to form an irradiation field of a radiation beam between the opposing leaf plates. Each of the leaf plate driving body includes a motor provided in common to the plurality of leaf plates. Driving force of the motor can be transmitted to the plurality of leaf plates at the same time through a pinion gear, upper and lower air cylinders, and upper and lower guides. Also, the driving force can be cut off selectively for each leaf plate.Type: ApplicationFiled: August 31, 2001Publication date: August 1, 2002Inventors: Kohei Kato, Hiroshi Akiyama, Masaki Yanagisawa
-
Publication number: 20020030164Abstract: A charged particle beam irradiation equipment enable to reduce the cost in case of irradiating the beam to the target object in plural directions.Type: ApplicationFiled: September 12, 2001Publication date: March 14, 2002Applicant: Hitachi, Ltd.Inventors: Hiroshi Akiyama, Koji Matsuda, Kazuo Hiramoto, Kohei Kato, Kazumichi Suzuki
-
Patent number: 5481064Abstract: A method is disclosed for solidification of waste fluids such as used antifreeze solutions, thereby facilitating disposal of said waste fluids. The method is applicable to aqueous waste fluids, which may be formed by addition of appropriate amounts of water, if necessary, to the original waste fluids. The method comprises mixing an ion adsorption agent with the aqueous waste fluid, followed by addition of a water-absorbent acrylic polymer material. Following agitation or stirring of the aqueous waste fluid/ion adsorption agent/water-absorbent polymer mixture, solidification is achieved. The solidified mixture is readily handled for disposal such as by incineration.Type: GrantFiled: March 3, 1994Date of Patent: January 2, 1996Assignee: Sanko Motor Chemical Co., Ltd.Inventors: Kohei Kato, Tohru Yoshioka