Our Approach

What makes us different in the orthopedic device market

Patient-Focused Design

We understand the challenges faced by movement disorder patients because we've experienced them ourselves. This first-hand knowledge drives our commitment to developing truly effective solutions.

Functionality First

We prioritize functionality over all else. Our focus is on creating orthotic devices that deliver exceptional performance, comfort, and durability for daily use.

User Requirements

We focus on all user requirements, not just the basics. From ease of use to aesthetic design, we consider every aspect that impacts the patient's quality of life.

Our Team

Meet the people behind Rezolve Medical

Lennart Zielstra
Lennart Zielstra

Co-Founder

After personal experience with drop foot, Lennart founded Rezolve Medical with a vision to create better orthotic solutions.

Joris Zielstra
Joris Zielstra

Co-Founder

Joris joined as a full-time co-founder in March 2025 and is responsible for general operations, compliance, finance and legal.

Pim Brouwer
Pim Brouwer

Thesis Intern

Currently completing his biomedical engineering degree at TU Delft, Pim is contributing to research and development.

Our Story

Rezolve Medical was founded in 2023 by Lennart Zielstra. After rehabilitating from an accident in the Austrian Alps in 2014, he was left with a drop foot and experienced first-hand the limitations of current ankle-foot orthoses on the market.

After graduating from Delft University of Technology with a bachelor's degree in applied physics and a master's degree in biomedical engineering, he set out on a mission to improve the quality of life for movement disorder patients like himself and founded Rezolve Medical.

In March 2025, Joris Zielstra joined the company as a full-time co-founder, after previously serving as a part-time advisor. Joris has 4+ years of experience working as a lawyer at a Big Four firm. He has also set up multiple businesses. His experience with regulations and compliance combined with his entrepreneurial spirit are a valuable asset for Rezolve. Together, they're working to revolutionize the AFO market with innovative solutions.

Rezolve team