The founding story: our journey begins

LEM Surgical AG was founded in Bern, Switzerland by Prof. Dr.-Ing. Stefan Weber, Prof. Dr. Andreas Raabe, Marco Matulic, Simon Michel, and Yossi Bar. The genesis of the company was rooted in their passion and vision to advance the field of robotic surgery and to help achieve superior surgical outcomes for patients.


Our executive teams bring deep experience and expertise in medical device R&D, Commercialization, Operations, and Finance.

Yossi Bar

Chief Executive Officer

Bruno Odermatt

Chief Financial Officer

Chris Prentice

Chief Commercial Officer

Arnold Vetterli

Vice President Operations

Board of directors

Led by visionaries, our board of directors combines strategic leadership with a deep understanding of medical technology.

Prof. Dr.-Ing. Stefan Weber

Chairman of the Board

CEO of CASCINATION AG and full professor for Image-guided therapies at the medical faculty of the University of Bern, Switzerland.

Mr. Simon Michel

Swiss National Council
CEO and Member of the Board of Directors Ypsomed Group

Board Member of Unitectra AG, sitem-insel AG, DCB Research AG and Forster Rohner AG. Board member of the Chamber of Commerce in the Cantons of Berne and Solothurn.

Mr. Yossi Bar

CEO Lem Surgical
Ex-Director R&D Mazor Robotics (Medtronic)

Innovative leader with diverse experience in design and commercialization of novel surgical robotic products. Lead the Mazor X platform by Mazor Robotics that was later sold to Medtronic.

Mr. Patrick Schär


Seasoned board member. Studied Business Administration and Economics at the University of Berne and trained as a banker. From 2010 to 2021 CEO of BV Group and since 2021 he is CEO of TecMed AG.

Mr. Marco Matulic

CTO of CAScination AG

Experienced medtech entrepreneur and engineer. Highly knowledgeable with design, development and commercialization of surgical robotic system.

Dr. Amir Belson

Serial entrepreneur and MedTech expert

Founder of multiple companies including Neoguide System (sold to Intuitive Surgical in 2009), Vascular Pathways (sold to C R Bard in 2014), Zipline Medical (sold to Stryker in 2019), Radiaction Medical, Emboline, Modular Surgical, Venocare and Follisave.

Alf Grunwald

Board member of Paragon 28, Realists GmbH, Starlight Cardiovascular, and Proprio.

From 2006 to 2016, Alf served as an Associate Professor for Corporate Finance and Entrepreneurship at the University of Applied Science Offenburg. Alf has served as partner at E.M. Warburg Pincus, was CEO and President of the Deloitte Consulting ICS Group, and founded T.L. Onyx Inc.

Gary Wells

Chairman of the Board for Wells Dairy, Inc.

Board member of the First National Bank of Le Mars, Harkers Distribution, Inc., International Ice Cream Association, International Dairy Food Association, and the Iowa Business Council. Member of the Advisory Board of the Federal Reserve Bank of Chicago.

Advisory board

Our advisory boards brings a deep understanding and expertise in neurosurgery, orthopaedics, and spine surgery.

Prof. Dr. Andreas Raabe

Chairman and Professor of Neurosurgery
University Hospital of Bern Inselspital, Switzerland

Recognized surgical expert with med tech focus. Proven track record in conception, development and commercialization of surgical devices for intraoperative navigation, diagnostics and protection of brain and spine function.

Dr. Alon Friedlander

Orthopedic Department Manager Sheba Medical Center, Israel

Extensive surgical experience in a wide variety of spine surgeries. Fellowship in France and Hong Kong. Holds on MBA from Bar-Ilan University. served as a medical advisor for Mazor Robotics.

PD Dr. Fabrice Külling

Chief Spine Surgeon Hirslanden Clinic
Senior Lecturer University Zurich, Switzerland

Recognized intenational spine surgeon with expertise in complex and lateral spine surgery. Advisor for Nuvasive, Medtronic and DePuy.

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A visionary mindset

The company name is an homage to Stanislaw Lem.

Stanislaw Lem

Stanisław Herman Lem (12 September 1921 – 27 March 2006) was a science fiction writer and authored essays on various subjects, including philosophy and futurology. Lem's books have been translated into more than 50 languages and have sold more than 45 million copies.


Lem is the author of the fundamental philosophical work Summa Technologiae, in which he anticipated the creation of virtual reality, artificial intelligence, artificial worlds, and developed the ideas of human auto-evolution.

Images from the start

LEM Surgical started as an idea, progressed to a rented room, and now is a growing company in Bern, Switzerland.