About Us


Pre-operative planning in 3D improves the performance of surgeons and QOL of patients.

We strive to meet the demands of the medical industry with advanced technology.


Name LEXI Co., Ltd.
Founded 18 Jul 1988
Capital 10 million JPY
President Tetsuro Nishida
Headquarters 1-6, Yaesu 1-chome, Chuo-ku, Tokyo, 103-8284, JAPAN

Tel: +81 (0)3 3270 5091

Fax: +81 (0)3 3270 5092

Banks Sumitomo Mitsui Banking Corporation, Resona Bank, Limited, Asahi Shinkin Bank
Business Descriptions Development of medical software and hardware.
Medical Device Strategy Institute, Japan Medical Imaging and Radiological Systems Industries Association
Main Clients (alphabetical order) B. Braun Aesculap Japan Co., Ltd.
Johnson & Johnson K.K.
Keio University School of Medicine
Faculty of Medical Science, Kyushu University
MicroPort Orthopedics Japan K.K.
School of Medicine, Niigata University
Faculty of Medicine, Osaka University
Stryker Japan K.K.
Faculty of Medicine, The University of Tokyo
Zimmer Biomet G.K.


Jul 1988 Established LEXI Data Co., Ltd. in Shibuya with capital of 3 million JPY.
Started development of software for scientific visualization and simulation, and hardware for computer graphics.
Moved to Shiraoka-machi, Saitama.
Sep 1996 Renamed to LEXI Co., Ltd. Increased capital to 10 million JPY.
Moved to Waseda, Tokyo.
Jun 2000 Moved to Sugamo, Tokyo.
Sep 2001 Released ZedView.
Mar 2004 Released O-Gauge.
Apr 2004 Moved to Koishikawa, Tokyo.
Jan 2009 Released ZedHip.
Feb 2010 Moved to Sugamo, Tokyo.
Nov 2011 Released VEGA.
Dec 2012 Released HipCOMPASS.
Jan 2013 Released JIGEN.
Mar 2014 Obtained US FDA 510(k) clearance for ZedView.
Sep 2014 Obtained ISO 13485 certification for the quality system, and European CE mark certification for ZedView.
Sep 2015 Obtained Japanese medical device certification for ZedView.
Apr 2017 Separated business system division as Technical Design & Support Co., Ltd.
Jun 2017 Founded LEXI Europe GmbH in Germany as subsidiary.
Jul 2017 Became a group company of JSR Corporation.
May 2021 Obtained US FDA 510(k) clearance for ZedView Ver.14.
Mar 2023 Became a group company of TOYO Corporation.
Nov 2023 Moved to Yaesu, Tokyo.