Moon Surgical

Moon Surgical, formerly MastOR, is a pre-clinical stage medical device company focused on the development of a new platform dedicated to surgical assistance.

Moon Surgical aims to augment the surgeon with leaps forward in computer vision, haptics, and robotics.

MastOR was established in 2019 by Sofinnova MD Start III (Brice Gayet and Pierre Campredon). The company is headquartered in Paris, France, with an office in San Carlos, California.


Moon Surgical's Maestro System delivers this empowerment, resulting in improved operating room efficiency and surgical care for patients. Its surgical assistance platform broadens access to minimally invasive procedures for surgeons and optimizes resource utilization within the operating room.


Moon Surgical forged a new strategic partnership with King’s College London to develop Machine Learning applications for Computer-Assisted Surgery, which aims to strengthen surgical artificial intelligence (AI), data and analytics, and accelerate translation from King’s College London research into clinical usage.


Moon Surgical is backed by Sofinnova Partners, GT Healthcare Capital & Partners, JJDC, Cathay Health, BPI France, Yann Fleureau, Siddarth Satish, and others. The company raised $31.3M in Series A round on Jun 07, 2022. This brings Moon Surgical's total funding to $36.8M to date.



  • Year founded: 2019
  • Funding Info: $36.8M over 3 Rounds (Latest Funding Type: Series A)
  • Yearly Revenue: NA
  • Employee Size: 11-50
  • Business Valuation: NA
  • City/Town: Paris
  • State: Île-de-France
  • Country: France
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