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1. 发明专利

JP2005204683A Magnetic field generator and magnetic resonance imaging apparatus using the same 审中-公开
标题翻译：磁场发生器和磁共振成像装置
公开(公告)号：JP2005204683A
公开(公告)日：2005-08-04
申请号：JP2004011290
申请日：2004-01-20
申请人： Hitachi Ltd , Hitachi Medical Corp , 株式会社日立メディコ , 株式会社日立製作所
发明人： YAMAMOTO TSUTOMU , WATANABE HIROYUKI , WADAYAMA YOSHIHIDE , WAKUTA TAKESHI , HONNA TAKAO , TAKESHIMA HIROTAKA , SAKAKIBARA KENJI
IPC分类号： G01R33/3815 , A61B5/05 , A61B5/055 , H01F6/00
摘要： PROBLEM TO BE SOLVED: To provide an open type magnetic force generator highly advancedly forming a uniform magnetic field in a measurement space even if it is impossible to form a magnetic passage for passing a magnetic flux into an axially symmetric shape and to provide a magnetic resonance imaging apparatus using the same. SOLUTION: The magnetic force generator is disposed with first and second annular magnetic field generating coils, first and second coil containers storing the magnetic field generating coils respectively, mutually separated from each other and oppositely disposed to each other, and a measuring magnetic field space formed between the disposed coil containers. First and second magnetic poles forming a magnetic circuit along with the first and second annular magnetic field generating coils are disposed, the position of a central line formed by connecting the central points of the first and second coil containers is deflected to the central line formed by connecting the central points of the first and second magnetic poles; or the first and the second coil containers are inclinedly constituted. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：即使不可能形成用于将磁通通过轴向对称形状的磁通道，提供在测量空间中高度前进地形成均匀磁场的开放式磁力发生器，并且提供使用该磁共振成像装置的磁共振成像装置。解决方案：磁力发生器设置有第一和第二环形磁场产生线圈，第一和第二线圈容器分别存储彼此相互分离并相对布置的磁场产生线圈，以及测量磁在设置的线圈容器之间形成的场空间。设置与第一和第二环形磁场产生线圈一起形成磁路的第一和第二磁极，通过连接第一和第二线圈容器的中心点形成的中心线的位置偏转到由连接第一和第二磁极的中心点; 或第一和第二线圈容器倾斜地构成。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2004236747A Magnet for open type magnetic resonance imaging apparatus 审中-公开
公开(公告)号：JP2004236747A
公开(公告)日：2004-08-26
申请号：JP2003027256
申请日：2003-02-04
申请人： Hitachi Ltd , Hitachi Medical Corp , 株式会社日立メディコ , 株式会社日立製作所
发明人： YAO TAKESHI , WAKUTA TAKESHI , KADOKAWA SHIGERU , YAMAMOTO TSUTOMU
IPC分类号： G01R33/3815 , A61B5/055 , G01R33/383 , H01F7/20
摘要： PROBLEM TO BE SOLVED: To solve the problem that a magnet for an open type magnetic resonance imaging apparatus in which asymmetrical magnetic circuits are formed causes magnetic pole pieces facing each other on both sides of static magnetic fields respectively working as photographing areas to be nonuniformly magnetized and, consequently, a uniformity of the static magnetic fields to drop, and the magnitude of an eddy current generated by an inclined magnetic field coil to vary at locations.
SOLUTION: The magnet for the open type magnetic resonance imaging apparatus is constituted so that the magnetic resistances of magnetic paths to the central part of a yoke which supports the magnetic pole pieces provided on one sides of facing first and second static magnetic field generating magnets by magnetically coupling the magnetic pole pieces with each other may become almost equal to each other in all respects to the facing surfaces of the pole pieces by interposing many voids or material with a low magnetic permeability or providing a plurality of magnetically separated magnetic paths in the courses of the magnetic paths.
COPYRIGHT: (C)2004,JPO&NCIPI

3. 发明专利

JP2009172085A Superconductive magnet device, magnetic resonance imaging apparatus using the same, and nuclear magnetic resonance apparatus 有权
标题翻译：超导磁体装置，使用其的磁共振成像装置和核磁共振装置
公开(公告)号：JP2009172085A
公开(公告)日：2009-08-06
申请号：JP2008012558
申请日：2008-01-23
申请人： Hitachi Ltd , Hitachi Medical Corp , 株式会社日立メディコ , 株式会社日立製作所
发明人： KUSAKA HIROTO , ABE MITSUJI , YAMAMOTO TSUTOMU
IPC分类号： A61B5/055 , G01R33/3815 , H01F6/00
CPC分类号： H01F6/06 , H01F6/02
摘要： PROBLEM TO BE SOLVED: To control the voltage generated in a leakage magnetic field and a coil at the time of rapid demagnetization within an allowable range and to miniaturize a superconductive magnet device. SOLUTION: The superconductive magnet device comprises a plurality of pairs of coils which are annularly formed around a center axis Z passing through a magnetic field space and which are disposed to face each other in the direction of the center axis Z, and a plurality of pairs of good conductors. The plurality of pairs of coils comprise superconductive main coils 10A and 10B and a superconductive shield coil 20 disposed with a space on the outside in the radial direction of the superconductive main coils 10A and 10B as seen from the center axis Z. The plurality of pairs of good conductors include a first good conductor 11 and a second good conductor 21. The first good conductor 11 is disposed on the outer side in the radial direction of the superconductive main coil 10A, or between a pair of superconductive main coils 10A in such a state that at least part of the first good conductor overlaps on the superconductive main coil 10A as seen from the center axis Z. The second good conductor 21 is disposed on the inner side in the radial direction of the superconductive shield coil 20. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：将快速退磁时的漏磁场和线圈中产生的电压控制在允许范围内并使超导磁体装置小型化。解决方案：超导磁体装置包括多个线圈，它们围绕通过磁场空间的中心轴线Z环形地形成，它们沿着中心轴线Z的方向彼此相对设置，并且多对好导体。多对线圈包括超导主线圈10A和10B以及超导屏蔽线圈20，该超导屏蔽线圈20在从中心轴线Z观察时在超导主线圈10A和10B的径向上具有在外侧的空间。多对良导体包括第一良导体11和第二良导体21.第一良导体11设置在超导主线圈10A的径向外侧或者一对超导主线圈10A之间，说明从中心轴线Z看，第一良好导体的至少一部分与超导主线圈10A重叠。第二良导体21设置在超导屏蔽线圈20的径向内侧。版权所有（C）2009，JPO＆INPIT

4. 发明专利

JP2005168772A Magnetic generator and magnetic resonance imaging apparatus using the same 审中-公开
标题翻译：磁性发生器和磁共振成像装置
公开(公告)号：JP2005168772A
公开(公告)日：2005-06-30
申请号：JP2003412669
申请日：2003-12-11
申请人： Hitachi Ltd , Hitachi Medical Corp , 株式会社日立メディコ , 株式会社日立製作所
发明人： YAMAMOTO TSUTOMU , WATANABE HIROYUKI , WADAYAMA YOSHIHIDE , WAKUTA TAKESHI , HONNA TAKAO , TAKESHIMA HIROTAKA
IPC分类号： G01R33/3815 , A61B5/055
摘要： PROBLEM TO BE SOLVED: To generate a uniform magnetic field in a measuring space without increasing the dimensions of a ferromagnetic yoke in an open type magnetic generator and a magnetic resonance imaging apparatus using the same.
SOLUTION: In a super-conductive magnet which forms a magnetic circuit by a ferromagnetic body yoke, by using a pair of super-conductive coils as a magnetic field generation source, in order to control magnetic field component, not only a shape on the side of a pole plane but also the shape of the anti-pole plane of the yoke is designated to be a shape having 3 or more refractions or 2 or more inflection points, thereby magnetization in a yoke volume is controlled. Thus, even in a magnetic circuit where axisymmetricality is very poor in view from the center of a magnetic field, uniformity of the magnetic field can be improved. In addition, the side of a magnetic field space of the cross section shape of a ferromagnetic pillar is narrowed for the purpose of improving opening property, and the position of the smallest part of a yoke cross section is deviated to a position other than a symmetrical surface for the purpose of improving operability.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了在测量空间中产生均匀的磁场，而不增加开放型磁性发生器中的铁磁轭的尺寸和使用其的磁共振成像装置。解决方案：在通过铁磁体磁轭形成磁路的超导体磁体中，通过使用一对超导线圈作为磁场产生源，为了控制磁场分量，不仅形状在磁极平面的一侧，也将磁轭的反极面的形状称为具有3个以上折射或2个以上拐点的形状，从而控制轭体积的磁化。因此，即使在从磁场的中心观察轴对称性非常差的磁路中，也能够提高磁场的均匀性。此外，铁磁柱的截面形状的磁场空间的一侧变窄以改善开口性，并且磁轭横截面的最小部分的位置偏离到对称的位置表面，以提高可操作性。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2014000346A Superconducting electromagnet device and magnetic resonance imaging apparatus 审中-公开
标题翻译：超导电磁装置和磁共振成像装置
公开(公告)号：JP2014000346A
公开(公告)日：2014-01-09
申请号：JP2012139387
申请日：2012-06-21
申请人： Hitachi Medical Corp , 株式会社日立メディコ
发明人： MURATA YUKIHIRO , YAMAMOTO TSUTOMU , KOGA YASUNORI , AOKI MANABU
IPC分类号： A61B5/055 , H01F6/02 , H01F6/04
摘要： PROBLEM TO BE SOLVED: To provide a superconducting electromagnet device capable of quickly consuming stored magnetic energy.SOLUTION: The superconducting electromagnet device comprises: superconducting coils 2a, 2b, 3a, 3b, 4a and 4b; a permanent current switch 6 that is serially connected to the superconducting coils 2a, 2b, 3a, 3b, 4a and 4b to constitute a first closed circuit C1 and applies a permanent current Ip to the superconducting coils 2a, 2b, 3a, 3b, 4a and 4b; diodes D1-D6 that are, separately from the first closed circuit C1, serially connected to the superconducting coils 2a, 2b, 3a, 3b, 4a and 4b to constitute second closed circuits C21-C23; and a heat transmission path 9 that, separately from the second closed circuit C21-C23, transmits heat generated in the diodes D1-D6 to the superconducting coils 2a, 2b, 3a, 3b, 4a and 4b. The heat transmission path 9 has: a heat transmission member, one end of which is thermally connected to the diode D1 and the other end of which is thermally connected to the superconducting coil 4a; and a heat insulation member provided at a lateral face of the heat transmission member.
摘要翻译：要解决的问题：提供能够快速消耗储存的磁能的超导电磁体装置。解决方案：超导电磁体装置包括：超导线圈2a，2b，3a，3b，4a和4b; 串联连接到超导线圈2a，2b，3a，3b，4a和4b的永久电流开关6，以构成第一闭合电路C1，并向超导线圈2a，2b，3a，3b，4a施加永久电流Ip 和4b; 与第一闭合电路C1分开地串联连接到超导线圈2a，2b，3a，3b，4a和4b的二极管D1-D6构成第二闭合电路C21-C23; 以及与第二闭合回路C21〜C23分开地将发生在二极管D1-D6中的热量传递给超导线圈2a，2b，3a，3b，4a，4b的热传递路径9。传热路径9具有：热传递构件，其一端热连接到二极管D1，另一端与超导线圈4a热连接; 以及设置在所述传热部件的侧面的隔热部件。

6. 发明专利

JP2008130744A Superconducting magnet device, and magnetic resonance imaging apparatus 有权
标题翻译：超级磁铁装置和磁共振成像装置
公开(公告)号：JP2008130744A
公开(公告)日：2008-06-05
申请号：JP2006312907
申请日：2006-11-20
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ANDO TATSUYA , ABE MITSUJI , YAMAMOTO TSUTOMU , CHIBA TOMOO
IPC分类号： H01F6/04 , A61B5/055 , F25B9/00 , F25B9/14 , G01R33/3815 , H01L39/04
CPC分类号： G01R33/3815 , G01R33/3804 , G01R33/3806 , G01R33/421
摘要： PROBLEM TO BE SOLVED: To provide a superconducting magnet device and a magnetic resonance imaging apparatus in which a dynamic magnetic field generated as a result of operation of a chiller for reliquefying vaporized refrigerant for cooling a superconducting coil has no impact on imaging. SOLUTION: The superconducting magnet device comprises a container (35) containing refrigerant for cooling a superconducting coil generating a magnetostatic field, a vacuum container (37) for holding the refrigerant container (35) under vacuum state, a radiation shield (36) arranged between the outer circumferential surface of the refrigerant container (35) and the inner circumferential surface of the vacuum container (37). The chiller (20) has a first cold storage member (21) reciprocating between the outer circumferential surface of the refrigerant container (35) and the inner circumferential surface of the radiation shield (36) wherein dynamic magnetic field shielding members (61, 62) of good electrical conductor are arranged around the axis of the reciprocal shaft (P) of the first cold storage member (21), and the reciprocal shaft (P) of the first cold storage member (21) substantially coincides with the direction of the magnetostatic field. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题：提供一种超导磁体装置和磁共振成像装置，其中，作为用于再液化的制冷机的运行而产生的动态磁场用于冷却超导线圈的蒸发制冷剂对成像没有影响。解决方案：超导磁体装置包括容纳冷却产生静磁场的超导线圈的制冷剂的容器（35），用于将制冷剂容器（35）保持在真空状态的真空容器（37），辐射屏蔽（36））配置在制冷剂容器（35）的外周面与真空容器（37）的内周面之间。制冷装置（20）具有在制冷剂容器（35）的外周面与辐射屏蔽（36）的内周面之间往复运动的第一冷藏部件（21），其中动态磁场屏蔽部件（61,62）的良导体布置在第一冷藏部件（21）的往复轴（P）的轴线的周围，第一冷藏部件（21）的往复轴（P）大致与静磁方向一致领域。版权所有（C）2008，JPO＆INPIT

7. 发明专利

JP2007061474A Magnet system 有权
标题翻译：磁铁系统
公开(公告)号：JP2007061474A
公开(公告)日：2007-03-15
申请号：JP2005253327
申请日：2005-09-01
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ANDO TATSUYA , ABE MITSUJI , NAKAYAMA TAKESHI , YAMAMOTO TSUTOMU
IPC分类号： A61B5/055 , G01R33/389 , G01R33/42 , H01F6/00
CPC分类号： G01R33/421 , G01R33/3806
摘要： PROBLEM TO BE SOLVED: To effectively suppress an external magnetic field which enters an imaging space of a static magnetic field formed of a pair of main coils arranged opposing each other. SOLUTION: The magnet system is provided with: the pair of main coils 9 and 10 arranged opposing each other to form the static magnetic field 3; and external magnetic field shielding coils arranged coaxially with the main coils. The external magnetic field shielding coils have a first group 11 of coils, whose coupling factor is small and a second group 12 of coils, whose coupling factor is larger than that of the first group 11 of coils, and the first group of coils and the second group of coils are connected in series. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：有效地抑制进入由彼此相对布置的一对主线圈形成的静磁场的成像空间的外部磁场。解决方案：磁体系统设置有：一对主线圈9和10彼此相对布置以形成静磁场3; 以及与主线圈同轴布置的外部磁场屏蔽线圈。外部磁场屏蔽线圈具有耦合系数小的第一组线圈11和耦合系数大于线圈的第一组11的线圈的第二组12，第一组线圈和第二组线圈串联连接。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2009004693A Superconductive magnet device and magnetic resonance imaging device 有权
标题翻译：超导磁体装置和磁共振成像装置
公开(公告)号：JP2009004693A
公开(公告)日：2009-01-08
申请号：JP2007166317
申请日：2007-06-25
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KOGA YASUNORI , WATANABE HIROYUKI , TAKAYAMA KUNIHIRO , YAMAMOTO TSUTOMU
IPC分类号： H01F6/00 , A61B5/055 , H01F6/04 , H01F7/20
摘要： PROBLEM TO BE SOLVED: To provide a reliable superconductive magnet device and a magnetic resonance imaging device, in which structure is simple, and a persistent current of a superconductive coil can be stably retained for the long term. SOLUTION: A superconductive magnet device 1 includes: a pair of coil containers 4 and 4 which accommodate a circularly-shaped superconductive coil 2 with a cooling medium; a pair of vacuum containers 1A and 1B which accommodate coil containers 4 and 4, respectively; a connecting tube 1C which supports the vacuum containers 1A and 1B, while opposing them to each other in the vertical direction, using a space between the vacuum containers 1A and 1B as a magnetic field space; a superconductive wire 2A which is connected between the superconductive coil 2 and 2 of a pair of the coil containers 1A and 1B through the connecting tube 1C; and a permanent current switch 7 which is connected to the superconductive wire 2A and passes permanent current to the superconductive coil 2. The permanent current switch 7 is arranged in the connecting tube 1C. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：解决的问题：提供可靠的超导磁体装置和磁共振成像装置，其结构简单，并且可以长期稳定地保持超导线圈的持续电流。解决方案：超导磁体装置1包括：一对线圈容器4和4，其容纳具有冷却介质的圆形超导线圈2; 分别容纳线圈容器4和4的一对真空容器1A和1B; 连接管1C，其使用真空容器1A和1B之间的空间作为磁场空间来支撑真空容器1A和1B，同时在垂直方向上彼此相对; 超导线2A，其通过连接管1C连接在一对线圈容器1A和1B的超导线圈2和2之间; 以及永磁电流开关7，其连接到超导线2A并将永久电流通过至超导线圈2.永磁电流开关7设置在连接管1C中。版权所有（C）2009，JPO＆INPIT

9. 发明专利

JP2009099635A Current-limiting device having superconductive thin film, and its manufacturing method 审中-公开
标题翻译：具有超薄膜的电流限制器件及其制造方法
公开(公告)号：JP2009099635A
公开(公告)日：2009-05-07
申请号：JP2007267343
申请日：2007-10-15
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HASEGAWA HARUHIRO , YAMAMOTO TSUTOMU , WADAYAMA YOSHIHIDE , SAITO KAZUO , OKADA MICHIYA , NINOMIYA TAKANORI
IPC分类号： H01L39/16
摘要： PROBLEM TO BE SOLVED: To provide a structure of a current-limiting device having a superconductive thin film, which can firmly connect an input/output part to a superconductive thin film thin wire with high repeatability.
SOLUTION: A metal tape is interposed between the input/output part and the superconductive thin film thin wire, and the metal tape and the superconductive thin film thin wire are connected to each other by ultrasonic bonding.
COPYRIGHT: (C)2009,JPO&INPIT

10. 发明专利

JP2009039183A Active shield superconducting electromagnetic apparatus and magnetic resonance imaging apparatus 有权
标题翻译：主动屏蔽超导电磁装置和磁共振成像装置
公开(公告)号：JP2009039183A
公开(公告)日：2009-02-26
申请号：JP2007204909
申请日：2007-08-07
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HIGUCHI YOSHIYA , ABE MITSUJI , ANDO TATSUYA , YAMAMOTO TSUTOMU , HONDA TAKURO
IPC分类号： A61B5/055 , G01R33/3815 , H01F6/02 , H01F7/20
CPC分类号： G01R33/3815 , G01R33/288 , G01R33/3806 , G01R33/421 , H01F6/02
摘要： PROBLEM TO BE SOLVED: To provide an active shield superconducting electromagnetic apparatus inhibiting the flow of a large current into a superconducting current limiter if quench occurs in a main coil or shield coil. SOLUTION: The active shield superconducting electromagnetic apparatus comprises a main open/close circuit in which a first main coil 1a, a second main coil 1b, a first shield coil 2a, a second shield coil 2b and a first superconducting permanent current switch 5b are connected in series; a subordinate open/close circuit, in which a bypass circuit 6 in which the superconducting current limiter 4 and a second superconducting permanent current switch 5a are connected in series, is connected in parallel to a series circuit of the first main coil 1a and the second main coil 1b; a first closed circuit 7a in which at least one of the first main coil 1a and the first shield coil 2a is connected to a first quench protection circuit 8a in series; and a second closed circuit 7b in which at least one of the second main coil 1b and the second shield coil 2b is connected to a second quench protection circuit 8b in series. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种主动屏蔽超导电磁装置，如果在主线圈或屏蔽线圈中发生淬火，则阻止大电流流入超导限流器。主动屏蔽超导电磁装置包括主开闭电路，其中第一主线圈1a，第二主线圈1b，第一屏蔽线圈2a，第二屏蔽线圈2b和第一超导永久电流开关 5b串联连接; 其中超导限流器4和第二超导永久电流开关5a串联连接的旁路电路6并联连接到第一主线圈1a和第二主线圈1a的串联电路的从属开/闭电路主线圈1b; 第一闭合电路7a，其中第一主线圈1a和第一屏蔽线圈2a中的至少一个串联连接到第一骤冷保护电路8a; 以及第二闭合电路7b，其中第二主线圈1b和第二屏蔽线圈2b中的至少一个串联连接到第二骤冷保护电路8b。版权所有（C）2009，JPO＆INPIT

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