About Medichanical Engineering

Medichanical Engineering ApS (ME) was founded as a consequence of a new invention – X-pander – made by Poul Torben Nielsen (PTN); chief surgeon in orthopedics and responsible for hip and knee arthroplasties (implants) in Northern Jutland, Denmark. The idea for the invention emerged from existing challenges in the everyday work of PTN and other orthopedic surgeons, challenges regarding fixation of the pelvic component (the cup) of a hip implant.

For the early development of X-pander, PTN teamed up with engineers Eske W. Petersen (EWP) and Søren G. Buch (SGB) and together they developed the first prototypes of X-pander. After CE certification X-pander was launched in Denmark in 2016 and following subsequent FDA registration surgeons started using
X-pander in the United States in 2020.





Eske W. Petersen

Co-founder and CEO


Eske W Petersen


For 15 years Eske has gained experience as project manager, consultant and CEO within the med-tech field. As a young entrepreneur he was winning prestigious prizes in various national entrepreneurial contests. Today his main functions are to scale the medichanical business, secure funding and ensure strategic business development.


Career & education:
• CEO, Medichanical Engineering
• Board member at Life Science Innovation North Denmark
• Business development consultant and owner of Team-Mediconsult
• Business development & entrepreneurship with SEA
• Engineer – Manufacturing technology – Aalborg University



Søren G. Buch

Co-founder and COO
QA/RA responsible


Søren G. Buch


By developing a price winning organization that manages and commercializes public Healthcare innovation (Ideklinikken at Aalborg University Hospital) Søren Buch has experience in the fields of strategy development, business development, project management, technology scouting, user-driven innovation and law.


Career & education:
• COO and head of QA/RA, Medichanical Engineering
• Compliance & Quality Manager at DESMI Ocean Guard A/S
• Business Developer & Project Manager, The Northern Region of Denmark
• Technology Scout, The Ideas Clinic – Aalborg University Hospital
• MBA Århus University
• Engineer - Manufacturing technology – Aalborg University



Poul T. Nielsen

Co-founder and Chief Medical Officer

Poul T. Nielsen


Poul T. Nielsen has more than 30 years of experience as an orthopedic surgeon inserting artificial hip joints. Today (since 2003) he holds the title as Clinical Director and Chief Orthopaedic Surgeon, Hip and Knee Arthroplasty, Northern Orthopaedic Devision, Aalborg University Hospital. Since 1998 he has been Ph.D-adviser on several projects and his bibliography of scientific papers on hip and knee science is extensive. Since 1993 he has been a member of the Org. Community of the National Danish Hip and Knee Arthroplasty Registers.




Danny Marrel

General Manager of Medichanical USA Inc.

Danny Merrell


Experienced Chief Executive Officer with a demonstrated history of success in the medical device industry. Skilled in the Reconstructive, Biologic, Oncological Orthopedics space, primarily focused on surgeon and hospital based advocacy. Strong healthcare industry business development professional. Development of disruptive value based business models driving value in evidenced based healthcare.






Board of Directors


Claus Hansen

Board Chairman

Claus Hansen


Claus Hansen is a seasoned serial entrepreneur, serial investor and venture builder with vast experience within Orthopedics. Claus started his career with the Danish Biomet distributor in 1993 and established his own Nordic distributor business in 2002, Ortoconcept Scandinavia, which was acquired by ArthroCare in 2008. Since 2015 Claus has worked as a venture builder and been involved in a number of successes in the Medical Device Industry i.e. 3Dintegrated, WARD 24/7 and Cystotech. Claus works as a active and involved partner to the daily operational team with the focus on company strategy, business development/partnering, funding and organizational build-up.




Renaat Vermeulen

Board member


Renaat Vermeulen


Renaat Vermeulen is a 33-year veteran of the orthopaedic industry. Renaat started his career with a Belgian distributor and joined Biomet, a global leader in orthopedics, in 1994. He held general management positions in Belgium, France, Germany and Spain and became President EMEA of Biomet in 2010. Currently, and since Biomet was acquired by Zimmer in June 2015, Renaat does business through his private consulting firm. He has been a Board member of MedTech Europe, the European Trade Association of Medical Devices for 4 years.




Michael Tandrup

Board Member

Michael Tandrup


With 30+ years in tech & IT, Michael has participated in several build-ups, turnarounds, mergers, acquisitions, and exits. Michael is Co-founder and Partner in the Danish venture fund Nordic Eye. He has been in IT & Tech for most of his career. Building up and turning-around has become a strong expertise during his career. For 13 years as CEO of TOPdesk Danmark, Michael turned the Service Management solutions company around and grew it to exit. Michael has been an active Business Angel since 2004, where he, due to his investments, has held several boards- and chairman positions. He has participated in several mergers, acquisitions, and exits. Michael possesses in-depth IT and tech knowledge, as well as a capacity for
entrepreneurship, business strategy, sales management, and B2B.