Neurosurgeon · Head of Neurosurgery, AZ Rivierenland

Built for the OR.
Tested against real surgery.
Advised by a practising surgeon.

I help MedTech, digital-health and OR-software teams check their product against how spine and brain surgery is actually performed: from concept and user research to workflow validation and clinical due diligence.

Practising at AZ Rivierenland · AZ Zeno Medical advisor OneBonsai
Head of NeurosurgeryAZ Rivierenland, since 2026
Neurosurgeon since 2019AZ Rivierenland · AZ Zeno
Consultant neurosurgeonUZA Antwerp, 2020–2024
English · Dutch · FrenchRemote across Europe, on site by arrangement

For whom

Teams whose product ends up in a surgeon’s hands

The most expensive mistakes in surgical technology are made early: a workflow nobody in the OR follows, an indication that is too broad, a feature surgeons will not change their habits for.

01

Surgical device companies

Spine implants, navigation, robotics and instruments: indication logic, surgical technique, how the device fits the existing OR set-up.

02

Digital health & OR software

Workflow tools, XR and simulation, surgical planning and imaging AI: user research, workflow mapping, feature priorities.

03

Investors

Clinical due diligence on surgical-technology companies: is the problem real, will surgeons adopt it, what does the evidence path look like.

04

Hospitals & innovation teams

OR organisation, department structure after mergers, and clinical input on technology adoption and procurement.

Services

Four ways to work together

Each engagement has a fixed scope and a written outcome. Fees on request.

Usual first stepExpert session

Two to three hours with your team, remote or on site. Problem framing, product walkthrough, open questions.

You receive
A written summary with prioritised recommendations
MonthlyAdvisory retainer

A fixed number of hours per month for product reviews, design sprints, user interviews and clinical sanity checks.

You receive
Review notes after each cycle; a direct line for quick questions
2–3 weeksClinical due diligence

For investors and acquirers assessing a surgical-technology company before they commit.

You receive
A report on clinical need, workflow fit, evidence and adoption risks
OngoingAdvisory board

A seat on a clinical or scientific advisory board, or input on study design and clinical evaluation.

Terms
Disclosed to hospitals and, where applicable, on betransparent.be

Clinical expertise

What I do in the operating room every week

Spine
  • Minimally invasive and endoscopic spine surgery
  • Microscopic decompression, midline-preserving
  • Cervical disc arthroplasty and laminoplasty
  • Lumbar fusion: ALIF, XLIF, PLIF
  • Spinopelvic alignment planning
  • Neuronavigation, 3D-printed patient-specific guides
Cranial
  • Neurosurgical oncology: glioma, meningioma, metastases
  • Neuronavigation and 5-ALA fluorescence-guided resection
  • Stereotactic biopsy
  • Hydrocephalus: shunt and endoscopic ventriculostomy
  • Neurotrauma and haemorrhage
Peripheral nerve
  • Entrapment neuropathies: carpal tunnel, ulnar, peroneal
  • Nerve tumours under neuromonitoring
  • Day-surgery pathways
OR & organisation
  • OR set-up, instrument and team workflow
  • Department governance after hospital mergers
  • Training of residents and OR staff
  • Military trauma surgery training (reserve officer)

Approach

How an engagement runs

Short, structured and in writing. Advisory work is planned around clinical duties, so timelines are agreed up front and kept.

  1. 1
    Intro call

    30 minutes, free. Your question, your stage and whether I am the right fit. NDA first if you need one.

  2. 2
    Scope and proposal

    Scope, timeline and fee in writing, agreed before any work starts.

  3. 3
    The work

    Sessions with your team, document and prototype reviews, and observation of surgical workflow where hospital rules allow.

  4. 4
    Written outcome

    Clear recommendations your team can act on and share internally.

Independent clinical judgement

Advice is only useful if it is honest. These rules apply to every engagement.

Advice, not endorsement

No promotional activity or product endorsements towards patients.

No patient data

Identifiable patient information is never shared, under medical confidentiality.

Publicly disclosed

Fees from pharma and MedTech companies are reported on betransparent.be under the Belgian Sunshine Act.

Conflicts declared

Relevant relationships are disclosed to clients, to my hospitals and when presenting.

Track record

Selected work

Medical advisor · ongoingOneBonsai

Clinical input on surgical workflow, MedTech and digital-health products for product and software teams.

Expert consultationsMarket research & strategic intelligence

Neurosurgical expert input for international market-research and strategic-intelligence firms on treatments, devices and clinical practice.

Medical expertiseMedical expert work

Independent medical expert assessments on neurosurgical and spine-related questions.

Research & publications

Publication · Acta Neurochirurgica · 2019

How I do it: operative nuances of multiple burr hole surgery for moyamoya disease and syndromeLavrysen E, Menovsky T. Acta Neurochir. 2019;161(1):171–175.Read the article →

Publication · World Neurosurgery · 2021

Polyvinyl alcohol sponges to facilitate cerebral bypass surgery: technical noteWorld Neurosurgery, 2021. Technical note.Read the article →

Publication · Tijdschrift voor Neurologie en Neurochirurgie · 2023

Het (g)lymfatisch systeem: ‘go with the flow’Bouttelgier RM, Lavrysen E. Tijdschr Neurol Neurochir. 2023;124(6):231–4. In Dutch.Read the article →

Master’s thesis · UZA · 2009–2012

Real-time cerebral blood flow monitoring in severe traumatic brain injury and subarachnoid haemorrhageUniversity of Antwerp, 2009–2012. Research within the IWT NeMo project on multimodal neuromonitoring at Antwerp University Hospital (UZA): real-time monitoring of cerebral blood flow in patients with severe traumatic brain injury and subarachnoid haemorrhage.View in the University of Antwerp library →
Portrait of Eno Lavrysen, MD

About

Eno Lavrysen, MD

Neurosurgeon and Head of Neurosurgery at AZ Rivierenland (Bornem, Willebroek, Rumst), and neurosurgeon at AZ Zeno (Knokke-Heist). Clinical focus on minimally invasive and endoscopic spine surgery, neurosurgical oncology and neurotrauma. Reserve officer with the Belgian Armed Forces, training in military trauma surgery.

  1. Head of Neurosurgery, AZ Rivierenlandsince 2026
  2. Neurosurgeon, AZ Zenosince 2023
  3. Consultant neurosurgeon, UZA2020–2024
  4. Neurosurgeon, AZ Rivierenlandsince 2019
  5. MD Antwerp University · Neurosurgery residency Ghent University2005–2012 · 2012–2019 (UZA, UZ Gent, ZNA Middelheim)

Questions

Before you get in touch

Do you sign NDAs?+

Yes, before any confidential information is shared. Mutual NDAs are standard.

How are fees structured?+

A session or day rate for expert sessions, a fixed fee for due diligence and a monthly fee for retainers. Rates on request.

Do you work with companies outside Belgium?+

Yes. Remote sessions in English, Dutch or French; on site in Europe by arrangement.

I am a patient. Can I ask a question here?+

No. This site is for advisory work only. For appointments and medical questions, see drlavrysen.be.

Contact

A product question that needs a surgeon’s view?

Book a free 30-minute intro call through my secretariat. A few lines about your product and your question help us prepare.

Julia Wrona, secretariat
Julia WronaSecretariat · bookings

Julia schedules intro calls and sessions, and answers practical questions about availability.