Surgical robotics operating room

Architecting the Future of
Surgical Intelligence

Sigma Capital backs the technologies and platforms redefining surgical care — where AI, robotics, and data converge to improve outcomes at global scale.

Founded by Bjoern von Siemens, Sigma Capital builds on a 175-year family legacy in industrial engineering and healthcare technology to shape the next frontier of AI-native surgery.

Our Philosophy

Invest in Infrastructure

Sigma invests selectively across the surgical AI value chain, focusing on the infrastructure layers where long-term strategic advantage is created — including data capture, workflow integration, connectivity systems, and enabling robotics platforms.

Evergreen Ownership Model

As an evergreen investment platform, Sigma deploys capital flexibly across platform formation, growth-stage scaling, and strategic acquisition opportunities. Rather than operating within fixed fund cycles, Sigma takes ownership positions ranging from strategic minority stakes to control and co-control investments where infrastructure ownership is critical.

Surgical precision

What Sets Us Apart

Deep Sector Expertise & Access

Backed by a European industrial family with global reach across software, automation, energy, and healthcare, Sigma Capital combines strong ties to leading academic institutions with access to key EU and US healthcare stakeholders. Beyond capital, Sigma brings clinical networks, regulatory expertise, operational know-how, leadership talent, and medtech distribution access.

Global Platform Architecture

With offices in Abu Dhabi, Berlin, Chicago, London, and San Francisco, Sigma unites Europe's industrial and clinical strength, US innovation and capital markets, Middle Eastern long-term capital, and Asia's manufacturing scale in one integrated global platform.

Proven Track Record

Sigma brings over 15 years of surgical and AI investing and operating experience, with over $300 million deployed across the ecosystem, including early positions in Intuitive Surgical and Auris Health, and the founding platform behind Caresyntax.

Leadership

Bjoern von Siemens

Bjoern von Siemens

Founder & Managing Partner
Rabbi Avraham Berkowitz

Rabbi Avraham Berkowitz

Chair, Ethical Surgery Foundation
Jia-Yi Har

Jia-Yi Har

Senior Advisor
Teresa Nguyen

Teresa Nguyen

Senior Advisor
Ruchi Dass

Ruchi Dass

Senior Advisor
Tiffany Xingyu Wang

Tiffany Xingyu Wang

Senior Advisor

Portfolio

$300M+ deployed across the surgical and health AI ecosystem

From early-stage platforms to global category leaders, Sigma's portfolio reflects over a decade of focused conviction in surgical and health data infrastructure.

Caresyntax
Siemens Healthineers
Intuitive Surgical
Auris Health
Huma
Ada Health
Neteera
LillianCare
Applied AI Corp (AAICO)
DasLab
roclub
XO Life
hi.health
Endoquest Robotics
Capstan Medical
FidoCure
Puma VC

Includes direct investments and fund investments made through Sigma Capital and surgical.ai vehicles.

Insights & News

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Surgical AI
Institutional Report

The Surgical AI Supercycle: A Generational Allocation Shift

How artificial intelligence is transforming surgical outcomes from specialised skill to industrial standard — and what this means for institutional capital allocation.

Read Article
Surgical.ai
Digital Framework

Surgical.ai: Sigma's Legacy Platform & Track Record

Ethical Surgery Foundation
Ethics & Governance

Founding the Ethical Surgery Foundation

Ecosystem

Sigma's ecosystem spans leading healthcare providers, medtech companies, and institutional partners — united by a shared commitment to advancing surgical innovation, patient safety, and long-term value in healthcare — extending into governance, research, and philanthropic initiatives that shape the future of surgical care.

Strategic Partners
Governance Ethical Surgery Foundation

Advancing AI safety, governance, and ethical frameworks in surgical intelligence.

Philanthropy Werner Siemens-Stiftung

Sigma contributes to WSS to support breakthrough research addressing critical challenges—from quantum computing and sustainable energy to advanced medical technologies.

Principal Bjoern von Siemens

Research, philanthropy, and long-term initiatives across healthcare and society.

Infrastructure Surgical.ai

Sigma's legacy surgical AI investment platform, representing a foundational part of the firm's long-term portfolio and track record in the sector.