Rauland’s Concentric Call Cord

Help is just a press away.

A modern call to care

In a healthcare setting, every second counts. So, any patient call button needs to be so clear that it can be operated by unfamiliar users with instinct.

Rauland’s Concentrical Care Call Cord was developed with usability as a primary (and critical) goal. Featuring a tactile, backlit button, the device is accessible to a wide range of users, including those with limited dexterity or hand strength. The shape is also intuitive and comfortable, requiring no instruction and remaining fully usable with eyes closed.

Beyond its core functionality, the Concentric Call Cord is built to withstand the rigours of a hospital environment. It's resistant to repeated cleaning from harsh chemicals without degradation, meets IP67 ingress protection standards, and is durable enough to handle drops, cable strain and abuse. Its sleek, minimalist design not only looks good but also prevents the accumulation of germs and bacteria.

Cobalt's proven development process started by gaining a deep understanding of user needs and the harsh hospital environment. Through digital sketches, foam mock-ups, early DfM/A consideration, material testing and iterative prototyping, the team developed a durable, easy-to-use, and hygienic handset that meets the most stringent hospital requirements.

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Focus Areas

Human Factors and Ergonomics
User-Centred Design
Industrial Design
Mechanical Design
Surface CAD Modelling
Product Engineering
Prototyping
Product Visualisation
Tooling Liaison and Management

Year

2024

Client

Rauland

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Project Outcomes

Design Language

Accessibility

Construction & Finishes

Manufacturing

Safety & Durability

With Rauland's belief that beautiful objects drive sales, Cobalt had an invitation to think outside the box. The team took this opportunity to distinguish the handset from competing market offerings – incorporating both functionality and accessibility in a timeless design.

From the very beginning, we explored ways in which we could make it easier and more comfortable for a wide range of people to press the call button – considering factors such as culture, physiology, dexterity/strength and cognitive ability.

The polished front surfaces help to maintain a clean unit with the textured back providing a secure grip. We carefully selected materials that could withstand repeated cleaning – and confirmed this by testing with over 300 chemical wipe repetitions. The materials showed no degradation or discolouration.

Cobalt collaborated closely with Rauland’s production supplier to optimise the product for manufacture. Reviewing tool designs and off-tool samples, the team made refinements through multiple rounds of tooling trials to optimise part fit, function and appearance.

Exterior materials are ISO10993 biocompatible, ensuring safety for patients, even if the handset is misused (such as biting). Internal components are engineered to maintain structural integrity under abuse, such as being thrown, dropped, or yanking of the cable.