- The Detector guides the user to the target with lit arrows; a press of the button gently and temporarily marks the skin above the target
- Simplified user interface arrows greatly improve accuracy and require no training
- Improved the UI with ambidextrous ergonomics: soft rubberized grips make it a palmable, soft, friendly-looking product
- User feedback says the Detector is far easier and more intuitive to use when compared to the old product
- Eliminated 4 out of 5 steps, making the process quick, simple and effective
A single sensor embedded in the probe looked for a peak signal. This older product required four steps:
- It must be tuned
- It must then be calibrated by sweeping it across the chest
- The chest is slowly scanned until the device peaks as the two upper green LEDs come on, indicating the port location
- A pen is then passed through a narrow hole in the center to mark the skin
The design challenges were:
- To greatly simplify the device and win back the customers with a product that gave great confidence to users
- To devise a more reliable system for locating the port
- To make it easy to mark the port after it was found
- To make the device’s operation easy and self-evident without complex calibration issues
- To bring visual appeal and ergonomic comfort to the design
- To package the detector’s components compactly in a hand-held unit
- To create a detector that would be centered in the palm of the hand instead of having a “bicycle hand grip style” handle that introduced angular inaccuracy
- To make a product that would encourage doctors to use Mentor’s implant system rather than discouraging them
Bridge then asked a number of potential users to try out the interface and see how good they were at finding the port. Concept 1 (in the Flash demo here) is closest to the old product, and showed how hard it was to detect the port with only the limited “peak” information. Try detecting the port yourself by clicking on this window.
Bridge created other ideas including Concept 2 (in the Flash demo here) which was the favored idea for the new user interface. Here the user gets clear directional information (arrows indicate which way to move to find the port) and a positive signal (all arrows go green) when they are over the target. However, it did require that the unit had three sensors to give this information instead of one. But it was so strongly preferred and better understood by users that it was the clear winner and was therefore implemented in the product, even though it cost a little more.
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The design of the detector had to satisfy two divergent criteria: it needed to appeal to doctors and reassure patients. For patients it was desirable that the units have a soft and friendly feel, as it is used intimately across the skin of women who have already seen many medical instruments and unpleasant procedures. For doctors, with whom the detector itself is a sales tool for the implant procedure, the unit should look sophisticated, technical, and precise.
The solution shown here was a greatly simplified user interface that did not require any training or confusing calibration. Simple arrows direct the user to the port.
When the port is found, a well-placed plunger is depressed to gently mark the skin with a temporary dimple. Soft rubberized grips help make it a palmable, soft, friendly-looking product with superb ambidextrous ergonomics that both doctors and patients love. User feedback is that this product is far easier and more intuitive to use when compared to the old product.