An Ergonomic Neuroendoscopic Instrument Handle Design using 3D Printing

Area of Science:

• Neurosurgery
• Ergonomics
• Surgical Instrument Design

Background:

• Minimally invasive neurosurgery presents challenges due to confined workspaces, impacting surgical outcomes.
• Conventional ring handles for neuroendoscopic instruments cause ergonomic discomfort for surgeons.

Purpose of the Study:

• To design and validate a novel palm-grasping ergonomic handle for skull-base neuroendoscopic instruments.
• To improve surgeon performance and comfort in minimally invasive procedures.

Main Methods:

• A palm-grasping handle was designed to match hand contours and fabricated for biopsy forceps.
• Fifteen participants performed a ring transfer task on a surgical trainer with varying endoscope angles and plate tilts.
• Subjective feedback and objective video analysis were used to validate the handle's performance.

Main Results:

• Participants reported significant reductions in discomfort and pain when using the ergonomic handle.
• Video analysis revealed statistically significant improvements in task precision, including fewer errors and better manipulation.
• While not statistically significant, reductions in task time and instrument instability were observed.

Conclusions:

• The designed ergonomic handle offers significant advantages in comfort and performance for neuroendoscopic procedures.
• Objective validation confirms improved task execution on a surgical trainer, supporting its clinical utility.