Patents Assigned to Mizuho Ika Kogyo Kabushiki Kaisha
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Patent number: 8303588Abstract: An external skeletal fixation device includes first and second pin clamp units fixedly holding rodlike members inserted, respectively, into a first part and a second part of a bone on the opposite sides, respectively, of a virtual hinge point corresponding to a center of rotational angulation, a center on opposite sides of a fracture site of the bone or a part of the osteotomy site for deformity correction are turned, or a center about which a joint turns. A connecting mechanism connecting the first and second pin clamp units has first and second arms pivotally connected to the first and second pin clamp units, respectively. The respective axes of rotary joints respectively connecting the first pin clamp unit and the first arm, the second pin clamp unit and the second arm, and the first arm and the second arms extend toward the virtual hinge point.Type: GrantFiled: March 3, 2005Date of Patent: November 6, 2012Assignees: Sunmedix Co., Ltd., Mizuho Ika Kogyo Kabushiki KaishaInventors: Kozo Nakamura, Isao Ohnishi, Masahiko Bessho, Satoru Oohashi, Tsuneo Aoki, Mitsuo Sato, Tatsuko Sato, legal representative, Ryojiro Asano, Kazuo Watanabe, Hiroshi Matsuzawa, Toshiro Uehara, Yoshiharu Saito
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Patent number: 6258096Abstract: An extramedullary femoral clamp guide system enables cutting a portion of the distal end of a femur perpendicularly to an ideal weight bearing axis of the femur as viewed in an antero-posterior image of the femur and cutting the frontal surface of a distal end part of the femur in parallel to the frontal surface of the distal end part of the femur.Type: GrantFiled: April 5, 2000Date of Patent: July 10, 2001Assignee: Mizuho Ika Kogyo Kabushiki KaishaInventor: Takahiro Seki
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Patent number: 6004351Abstract: A prosthetic knee joint enabling high-angle flexion includes the following members (a)-(c).Type: GrantFiled: September 15, 1997Date of Patent: December 21, 1999Assignee: Mizuho Ika Kogyo Kabushiki KaishaInventors: Naohide Tomita, Eijiro Ishikawa, Yoshiharu Asai
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Patent number: 5807394Abstract: To ensure continuous incising or coagulating technique without adhesion of carbonized body tissue proteins and fats which may be produced by thermal action of an arc discharge or Joule heat attendant on the electrotomy or electrocoagulation, at least a part of a surgical instrument, such as an electric knife or a forceps, is formed of a C/C composite material.Type: GrantFiled: January 26, 1996Date of Patent: September 15, 1998Assignee: Mizuho Ika Kogyo Kabushiki KaishaInventors: Junya Sakai, Heiji Yoshinaka, Masaru Ohyama, Kenji Sumiya, Takashi Nemoto
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Patent number: 5603714Abstract: For the purpose of facilitating correction of front-to-back and lateral vertebra curvature in scoliosis and the like, vertebra screws are passed through vertebra plates with spikes that dig into the sides of vertebrae and are screwed into each vertebra. The vertebra screws have rod passage holes in their heads, respectively, which holes are partially open on the side. A screw hole is provided at the top surface of each head. Rods are inserted into and passed through all the rod passage holes via the side openings in the heads of all the vertebra screws, the set-screws being each screwed into screw hole formed in the top surface of the head of the vertebra screw for the purpose of fixing the rods to the vertebra screws.Type: GrantFiled: December 12, 1994Date of Patent: February 18, 1997Assignee: Mizuho Ika Kogyo Kabushiki KaishaInventors: Kiyoshi Kaneda, Shoichi Takahashi, Yoshiharu Asai, Takao Shimizu
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Patent number: 5312426Abstract: A cerebral aneurysm clip used for clamping an intercerebral blood vessel during a surgical operation. The clip has a pair of opposite clamping blades or arms for clamping a blood vessel, semi-circular engagement portions integrally connected to the proximal ends of the clamping arms, and a resilient wire portion integrally connecting the two engagement portions for exerting a resilient clamping force to the clamping arms via the engagement portions. The clamping arms are opened and closed by manipulating forceps which has at its tip engagement protrusions engaging the engagement portions from the inside. In order to prevent a blood vessel from passing excessively beyond the region between the opposite clamping arms, a U-shaped wire element is attached to the clip. The wire element has a transverse section passed through and across the proximal ends of the clamping arms for preventing ingress of the blood vessel into the space between the engagement portions.Type: GrantFiled: March 12, 1993Date of Patent: May 17, 1994Assignee: Mizuho Ika Kogyo Kabushiki KaishaInventors: Hiromu Segawa, Satoshi Sasaoka
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Patent number: 4360023Abstract: A metal wire guide member consisting of two leg portions and a straight guide portion connecting the two leg portions is secured to a cerebral anurysm clip with clamping jaws which are opened and closed by operating resilient arms supporting the jaws, in such a manner that the leg portions are fixedly embedded in the proximal portion of one of the jaws and in the supporting arm of the same jaw, respectively, and the straight guide portion is in pressing sliding contact with the other arm to guide the same along and press the same against the one arm whereby the jaws are correctly engaged with each other.Type: GrantFiled: March 22, 1977Date of Patent: November 23, 1982Assignee: Mizuho Ika Kogyo Kabushiki KaishaInventors: Keiichiro Sugita, Gunji Nemoto
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Patent number: 4101120Abstract: In a surgical operation table having an upper structure for supporting the body of a patient, separably supported by a lower structure on a part vertically movable relative to the remaining parts thereof and rotatable around the longitudinal and transverse axes of the table, a guiding device comprising a guiding pin and a guiding bush combined respectively with mating halves of an electric connector and a locking device comprising an electrically driven locking screw and a nut are provided on the engaging surfaces of the upper structure and the above mentioned part of the lower structure, which are driven through a two-line electric circuit of a reduced voltage.Type: GrantFiled: May 4, 1977Date of Patent: July 18, 1978Assignee: Mizuho Ika Kogyo Kabushiki KaishaInventor: Kensuke Seshima