Patents by Inventor Toshiyasu Nakamura

Toshiyasu Nakamura 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).

  • Artificial elbow joint
    Patent number: 8100980
    Abstract: An artificial elbow joint including a humeral component made of metal and an ulnar component made of resins for replacing an elbow joint. The humeral component of this artificial elbow joint is configured by a substantially cylindrical trochlea and a stem extending from the trochlea that is inserted into the humeral; and the ulnar component is configured by a joint surface member which receives the trochlea of humeral component in a rotatable manner and a stem which extends from the joint surface member and is inserted into the ulna. The stem of the humeral component is curved gently downward overall so as to comply with the lordotic shape of the humeral, and the trochlea is turnable about the centerline of the stem.
    Type: Grant
    Filed: May 10, 2006
    Date of Patent: January 24, 2012
    Assignee: Nakashima Propeller Co., Ltd.
    Inventors: Hiroyasu Ikegami, Yukio Horiuchi, Shinichiro Takayama, Shigeki Momohara, Atsuhito Seki, Toshiyasu Nakamura, Atsushi Tanji, Keitaro Yamamoto
  • Artificial elbow joint
    Publication number: 20090105839
    Abstract: An artificial elbow joint including a humeral component made of metal and an ulnar component made of resins for replacing an elbow joint. The humeral component of this artificial elbow joint is configured by a substantially cylindrical trochlea and a stem extending from the trochlea that is inserted into the humeral; and the ulnar component is configured by a joint surface member which receives the trochlea of humeral component in a rotatable manner and a stem which extends from the joint surface member and is inserted into the ulna. The stem of the humeral component is curved gently downward overall so as to comply with the lordotic shape of the humeral, and the trochlea is turnable about the centerline of the stem.
    Type: Application
    Filed: May 10, 2006
    Publication date: April 23, 2009
    Inventors: Hiroyasu Ikegami, Yukio Horiuchi, Shinichiro Takayama, Shigeki Momohara, Atsuhito Seki, Toshiyasu Nakamura, Atsushi Tanji, Keitaro Yamamoto