Carpal tunnel syndrome (CTS) is a condition that occurs when the median nerve is compressed as it traverses the carpal tunnel, leading to entrapment neuropathy. The initial signs of CTS encompass pain, numbness, and paresthesias within the median nerve distribution. As CTS is a progressive condition in most patients, it can result in permanent loss of sensation and function in the hand if it is not adequately identified and treated (National Library of Medicine). For a patient with Carpal Tunnel, seemingly simple everyday tasks become impossible.

Dishwashing especially is seemingly impossible with CTS- the pinch hold on the sponge, the repeated movements and the pressure of holding heavy dishware strains the hand significantly.

Below is my process of developing a carpal Tunnel friendly sponge holder that reduces stress on the median nerve while reallocating the pressure.

Ideation and User testing

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User testing revealed that silicon is the best material for this project. It also revealed a design direction for the project. Users hated any kind of glove, since it would gather water. Users didn’t want to accidentally touch the sponge and also didn’t want a handle, which was less comfortable than a regular sponge.

Using a 3D peeler, a device that scans a surface and converts it into a 3D model, I created a prototype fitted to the average hand. Through trial and error, I found a way to accommodate both the 1st percentile hand size and the 99th percentile hand.

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SCRUB-EASE

Scrub-ease is a handheld sponge tool designed with one mission in mind: to make everyday cleaning easier and less painful for those living with carpal tunnel syndrome.

Unlike traditional sponges that demand a tight grip and repetitive wrist motions, Scrub-ease features an ergonomic, palm-support design that distributes pressure evenly across the hand—minimizing strain and allowing for a pain-free grip.

Scrub-ease transforms chores into an accessible, low-impact activity. Whether you’re washing dishes, wiping counters, or tackling bathroom tiles, Scrub-ease gives you control without the discomfort.

Scrubbing made simple. Scrub-ease.

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