VisionTech Nasal Speculum, medical product design and engineering for VisionTech

The challenge

An ENT examination needs two things at once: a speculum to open the nostril and light where the clinician is looking. In practice that means a head lamp or a hand-held torch, a second hand, and an instrument that has looked the same for a century. VisionTech wanted a speculum that brings its own light, can be held in one hand, survives the autoclave and looks less intimidating to the patient.

Our role

RAAK took the product from strategy through industrial design and mechanical engineering to manufacturing support: concept and ergonomics, the light module architecture, the enclosed spring mechanism, material selection for sterilisation, and preparation of the instrument for production.

Key decisions

• 01Light at the tip, electronics in the handle. An LED sits at the end of a channel that runs up the inside of the handle, so the light lands exactly where the clinician looks, without a separate lamp.
• 02A removable light module. The LED, battery and electronics are one module that clicks out of the handle, so the metal instrument can go through repeated autoclave cycles while the electronics stay dry.
• 03A fully enclosed spring. The return spring sits inside the sculpted handle instead of between the blades, which gives a precise, predictable grip and a calmer appearance for the patient.
• 04One-handed operation. Handle geometry and spring force were tuned so the speculum opens, holds and lights with one hand, leaving the other free for the examination.

Constraints

• 01Sterilisation: every reusable part has to withstand repeated autoclave cycles, which rules out most plastics and adhesives and drives the split between sterilisable body and removable electronics.
• 02Clinical ergonomics: blade geometry and opening force follow established ENT practice; the instrument had to feel familiar to a clinician on the first use.
• 03Packaging a light source, battery and switch inside a handle that still fits a hand and balances correctly.
• 04A low-volume, high-precision medical supply chain, with suppliers qualified for medical-grade materials and finishes.

The result

A new generation of nasal speculum that lights the examination from the instrument itself, operates with one hand and separates into a sterilisable body and a removable electronics module. The project ran from first concept to production preparation and was featured by Core77.