+64 21 582 199 info@caliberdesign.co.nz

About Us

Spinal Traction Limited (STL) was established in New Zealand in 2013. The company is a joint venture between its two major shareholders Caliber Design Ltd and Singhal Medical Ltd.

Dr Raj Singhal

Spinal Rehabilitation Specialist, Canterbury District Health Board  |  Director, Spinal Traction Ltd

MBBS, FRCS, CCT Rehabilitation Medicine (UK), FAFRM (RACP)


Who We Are

Dr Raj Singhal is the clinical director of the Burwood Spinal Unit, Christchurch, New Zealand. He works in the field of Spinal injuries and specialises in acute management of Spinal cord injuries as well as the rehabilitation phase of these individuals. Dr Singhal worked in United Kingdom before coming to New Zealand. He trained at the world renowned National Spinal Injuries Centre at Stoke Mandeville Hospital in UK.

Dr Singhal is involved in various multi-centre trials focusing on improved outcomes for patients with spinal injuries. He also is involved in setting up charitable community-based spinal clinic and workshop in Samoa. He is a committee member for external relationship committee for ISCoS (International Spinal Cord Society), and represents  for the South Pacific Region. He is the President of ANZSCoS (Australia New Zealand Spinal Cord Society).

Jonathan Prince

Director, Caliber Design Ltd  |  Director, Spinal Traction Ltd

BE Mech (Hons) NZCE (Mech) 

Jonathan has a highly successful track record delivering world leading, sustainable, breakthrough product. He is passionate about applying engineering rigour to help our clients develop better quality products, achieve a better time to market, and net a greater return on investment.

Jonathan has had the privilege of working for some of New Zealand’s leading design companies and has extensive experience in mechanical engineering, as well as sales, business development, and management.

Business is a passion for Jonathan, not just a job. He has a strong focus on product commercialisation, the design process, and sustainable design. His experience with business start-ups and strategic business development gives him a solid background for working with companies of all sizes. Jonathan has a genuine desire to help New Zealand businesses innovate.

Great products don’t just happen. Jonathan is an expert in the process of developing them. By taking the time to thoroughly understand he voice of the customer (their latent/unmet needs), revolutionary products are borne. Two of Jonathan’s career highlights are the internationally successful LIFE Chair and Humanware low vision aids. Both products were the result of rigorous customer research programs, which resulted in products that were wildly different from the competition and met the specific needs of the client.

Jonathan has significant experience in project management of multidisciplinary teams across many industries. This extends to mentoring and reviewing engineering projects and teams, both internally within his organisations and externally for clients. He regularly presents for National bodies and local Government organisations on design and engineering project management.

Jonathan has earned the reputation of being an effective business leader. He enjoys building collaborative teams across companies and as a vast network of contacts throughout the industry.

Development Team

An experienced team of experts developed Dr Singhal’s idea from concept through to fully functioning and thoroughly tested prototype:

  • Dr Raj Singhal provided the intellectual property and ward-level medical industry knowledge.
  • Ossis Ltd provided certification and product knowledge.
  • Caliber Design provided project management, engineering, and production services. See the Spinal Traction Unit case study for more details. Caliber Design are a Joint Venture Partner in the project.
  • Howard Wright Ltd provided valuable industry knowledge and strong support for the device to integrate with its innovative hospital beds.
  • NZ Health Innovation Hub (NZHIH) and the Canterbury District Health Board (CDHB), through Via Innovations, provided investment funds and validation advise to see the first two production prototypes into service in the New Zealand health system.


Contact Us

E   raj.singhal@cdhb.health.nz
C   +64 272 136 224

TECHNICAL CONTACT  |  Jonathan Prince
E  jonathan.prince@caliberdesign.co.nz
C  +64 21 582 199

© Spinal Traction Ltd

Street Address

41C Birmingham Drive
Middleton, Christchurch 8041

Postal Address

PO Box 29488, Riccarton
Christchurch 8440

Spinal Traction Ltd