External Access Targeting Device

Abstract/Technology Overview

External Access Targeting Device (EATD) is the world’s first non-active Class A sterilised surgical device and procedure to assist surgeons in precision fluoroscope or image-guided percutaneous access to stones, lesions and abscesses in deep organs such as kidney, liver, lung and spine etc. This device has wide applications in intervention radiology and minimally-invasive surgeries and biopsies that require precision needle access and targeting.

This device solves the problem of a needle puncture during minimally-invasive surgery and biopsy that were traditionally performed by surgeons, without the use of any tool or device, with only bare hands exposed under radiation from imaging device such as a fluoroscope.   

This new device and technology allows for systematic and precision adjustments, aiming and targeting of the needle during the needle puncturing procedure and supports both bi-planar and bull-eye methods, giving surgeons full control during the procedure.

Technology Features, Specifications and Advantages

EATD has been designed with the following new features in mind to make possible a more accurate, faster and safer needle puncture for many different percutaneous access procedures:

  • Integrating multiple degrees of freedom with systematic adjustment and aiming procedures to simplify 3D alignment of the needle
  • Needle held by compliant mechanism, allowing remote adjustment by the surgeon from outside the radioactive burn-field
  • Retaining the touch & feel of the insertion for the surgeon allowing confident judgment on the puncture
  • SOP that cuts short surgery time to reduce exposure to radiation and reduces surgery cost
  • Non-active and non-robotic mechanism, set up is simple and fast and enhances operational reliability and safety

Potential Applications

The first application of EATD is Percutaneous Nephrolithotomy (PCNL) in urology. It also potentially has very wide applications on intervention radiology and minimally-invasive surgical or biopsy procedures that requires a needle to target onto a stone or lesion using visual-guidance through an imaging system.

This new technology could be adapted to many different types of percutaneous access procedures to assist surgeons to target stones or lesions more accurately, quickly and safely. Potential applications include epidural procedures, orthopaedic surgeries such as percutaneous vertebroplasty and discectomy, as well as needle biopsy on thoracic, lung and bone lesions, etc.

Customer Benefit

EATD has many significant benefits of enhancing the efficacy, safety and efficiency of percutaneous access procedures:

  • ensuring more accurate, precise, safer and systematic puncture and reduces complication rate such as organ injury,
  • shortens surgery time, reduces operating theatre cost and cuts down surgeon fatigue, reduce radiation exposure from X‑ray for both surgeons and patients,
  • minimises chances of needlestick injury of surgeons,
  • cut short learning curve of the percutaneous access technique to allow more young and new surgeons to take up this difficult-to-master skill readily, and
  • purposefully designed and developed as a passive device and non-robotic to simplify and speed up its set up, operation and maintenance, while keeping overall operating cost low

Technology Owner

Elfa Amin


Technology Development Centre, ITE College Central

Technology Category
  • Medical Devices
Technology Status
  • Licensed but Available
Technology Readiness Level
  • TRL 6