Non-contact, non-radiation device that accurately locates multiple body implants


In paediatric orthopaedic, assessment of 3D spatial changes of implants is needed. This invention “OI-GPS” is a contact- and radiation-free mobile sensing tech precisely visualize 3D location of implants.

  • Non-contact, non-radiation device that accurately locates multiple body implants
Commercialisation opportunities
Problem addressed

Children after spine surgery require frequent examination to monitor the surgery outcome. The common examinaiton used is x-ray which imposes a lot of radiation to the children which may be a hazard to their health.

  • The radiation-free, non-contact measuring device of the present invention can accurately locate multiple screws or implants in a patient's body
  • A system and devices provide accurate localization of orthopedic implants based on magnetic tracking approach (MTA) technology and without radiation.
Key impact
  • Free the children from regular x-ray exposure during clinical follow-up
  • giving surgeons the ability to modify treatment plans in real time during procedures, such as scoliosis correction, in order to enhance treatment effectiveness and improve safety
  • has a wide range of applications in complex fracture correction, intelligent prosthetic limbs, wearable devices and other scenarios
  • The International Exhibition of Inventions of Geneva: Silver Medals
  • Spine surgery
  • limb lengthening
  • fracture healing
The University of Hong Kong (HKU)

Founded in 1911, The University of Hong Kong (HKU) is the first and oldest institution of higher education in Hong Kong. For over a century, the University has dedicated itself to creating knowledge, providing education, and serving society. Today, HKU has an established worldwide reputation for being a research-led comprehensive University with ten Faculties and a strong commitment to intellectual freedom, liberty and diversity. HKU has a proud record of academic recognition in researches through honours and awards received from both local and international bodies.