Dr. Christoff Heunis is a biomedical and mechatronics engineer (PhD, University of Twente) and the founder & CEO of Flux Robotics, a University of Twente spin-off building a magnetically guided robotic system that steers a guidewire through the body from outside the patient. It started with a single phone call while he was an engineering student in South Africa — a best friend’s mother had a stroke, and there were only a handful of surgeons on an entire continent who could treat it.
In this conversation, Dr. Christoff Heunis reveals:
⬛ Why one phone call — a friend’s mother’s stroke, with “three neurovascular surgeons” for the whole African continent — set the course of his life
⬛ How an external robotic magnet can pull a guidewire around the tightest, most complex angles a surgeon’s hands can’t reach
⬛ Why surgeons say they don’t want to be replaced — yet “do want to press a button and then leave, and when I come back, the surgery is over”
⬛ The first real-world use case: misaligned fenestrations, CTOs and the angles no combination of guide catheters can make
⬛ How Flux got the FDA to confirm a 510(k) pathway — and why the predicate they found changes everything
⬛ What Stereotaxis acquiring Robocath signals about the commercial future of magnetic surgery
⬛ How he raised €3.2M in non-dilutive funding before giving up a single point of equity
Timestamps:
00:00 Intro — the “Afrikaans Slim Shady”
04:58 The stroke that started it all
06:29 Why a PhD in surgical robotics at Twente
11:17 The surgeon’s real bottleneck: navigation & radiation
15:42 How the magnetic guidewire actually works
20:02 “Press a button and the surgery is over”
24:58 The first use case: misaligned fenestrations
30:49 A carotid crossing, step by step
34:37 The surgeon’s new role: “PAD coach”
36:00 Company update & new CMO Dr. Rob Beasley
37:15 The 510(k) pathway, explained
40:31 Stereotaxis buys Robocath
50:04 Raising €3.2M non-dilutive
59:24 Live: the Afrikaans rap “Soms”
Follow Dr. Christoff Heunis:
LinkedIn — https://www.linkedin.com/in/christoff-heunis/
Flux Robotics — https://fluxrobots.com
Resources mentioned in this episode:
🏢 Flux Robotics — https://fluxrobots.com
🏢 Stereotaxis — https://www.stereotaxis.com
🔗 Stereotaxis acquires Robocath (announcement) — https://ir.stereotaxis.com/news-releases/news-release-details/stereotaxis-announces-definitive-agreement-acquire-robocath
🏢 Robocath — https://www.robocath.com/
🏢 Intuitive / da Vinci Surgical System — https://www.intuitive.com
🎓 University of Twente — https://www.utwente.nl/en/
🎓 Stellenbosch University — https://www.sun.ac.za/english
🏛 RVO — Netherlands Enterprise Agency — https://www.rvo.nl
🏛 NWO — Dutch Research Council — https://www.nwo.nl/en
🏛 Interreg (EU cross-border funding) — https://www.interreg.eu
💸 NextGen Ventures — https://www.nextgenventures.nl
💸 Future Tech Ventures — https://futuretechventures.nl
👤 Dr. Rob Beasley — CMO, Flux Robotics — https://www.linkedin.com/in/robert-beasley-138124145/
👤 David Fischel — Chairman & CEO, Stereotaxis — https://www.linkedin.com/in/davidfischel/
🎵 Eminem — “Lose Yourself” — https://open.spotify.com/track/5Z01UMMf7V1o0MzF86s6WJ
🎵 Coolio — “Gangsta’s Paradise” — https://open.spotify.com/track/1DIXPcTDzTj8ZMHt3PDt8p
🎵 “Soms” — Christoff’s Afrikaans rap single, with his brother Daniel (name only)
Life of Flow is hosted by Dr. Lucas Ferrer & Dr. Miguel Montero-Baker.
🌐 Website: https://lifeofflowpodcast.com
▶ YouTube: https://www.youtube.com/@LifeofFlowPodcast
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Connect with the hosts:
Dr. Lucas Ferrer — [Lucas LinkedIn]
Dr. Miguel Montero-Baker — https://www.linkedin.com/in/miguel-montero-baker-a44354214/
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