A 3D printed smartphone adaptor for nasolaryngoscopy

Area of Science:

• Medical Devices
• 3D Printing Technology
• Otolaryngology

Background:

• Flexible nasolaryngoscopy (FNL) is crucial for examining the nasopharynx and larynx.
• Commercial smartphone adaptors for FNL are often expensive, limiting accessibility for junior clinicians.
• Generic adaptors may not provide an optimal fit for specific equipment.

Purpose of the Study:

• To develop a cost-effective, 3D-printed smartphone adaptor for flexible nasolaryngoscopy.
• To create an adaptor with a superior fit compared to generic options.
• To facilitate high-quality image and video capture for clinical and educational purposes.

Main Methods:

• Computer-aided design (CAD) was used to create the adaptor for an iPhone XS and Olympus Rhino-Laryngo Fibre Scope.
• Iterative design and experimentation with various 3D printing materials were performed.
• The adaptor was optimized to utilize the iPhone's built-in ×2 telescopic zoom lens for image acquisition.

Main Results:

• The 3D-printed adaptor successfully captured high-quality images and videos of the nasopharynx and larynx.
• The adaptor provides a significant cost saving ($29 AUD) compared to commercial alternatives.
• Recorded images are valuable for senior clinician review, medical education, telehealth, and electronic medical record integration.

Conclusions:

• 3D-printed smartphone adaptors are clinically valuable tools for flexible nasolaryngoscopy.
• This affordable adaptor enhances accessibility for junior clinicians.
• Freely available design files promote further modification and widespread adoption.