Mediceon Needle Guide – Phase 4 Prototype This repository documents the latest development stage of a low-cost, open-source needle guidance system designed for CT-assisted medical procedures. The project focuses on improving precision in needle targeting during biopsies, ablations, and drug delivery, especially in under-resourced clinical environments. The current design is fully mechanical, requires no electronics, and supports 3D printing using medical-grade PETG and silicone.

The final prototype offers three degrees of control—slice, tilt, and depth—via a spherical-coordinate-inspired structure. Each axis is mechanically restricted to improve targeting consistency and reduce user error. A custom-molded silicone base provides anatomical conformity, while integrated levels ensure proper alignment with the patient’s skin.

All .STL files are downloadable in the folder: Guided_Syringe_Prototype_04.zip The video linked below includes step-by-step tutorials for constructing each part of the device, assembling the full system, and simulating the motion and stress analysis results.

Watch the Build and Simulation Video https://www.youtube.com/watch?v=0nuLlYW7PKY

Chapters:

0:00 – Base Plate Construction

5:45 – Rotator Track Construction

17:37 – Sliding Track Rotator Construction

29:22 – Syringe Clip Construction

34:39 – Assembly Tutorial

50:25 – Physics Simulations

50:44 – Motion Simulations