The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 25, 1990
Filed:
Sep. 26, 1989
Shigeo Niwa, Aichi, JP;
Kazuhiko Sawai, Nagoya, JP;
Tomokazu Hattori, Aichi, JP;
Yasumasa Matsuda, Seto, JP;
Wataru Yagi, Nagoya, JP;
Masami Ishii, Toyota, JP;
Junichi Mita, Kariya, JP;
Masuo Yamada, Kariya, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
An artificial stem for femur of coxa in a human body comprises a stem element, a head and a neck connecting the both, each side surface of the stem element corresponding to the indise or outside of a human body being formed by a specific curved or straight line respectively, the cross section of the stem element having a specific shape, and scale-like step patterns being formed on both the front and back surfaces, thereby improving the fitness to the femur of a small body person like Japanese, the stability and the anti-twisting strength after insertion.