Are special tools or techniques required to fit the ReSound Verso IIC?
In developing the IIC, it was important to us that the process of impression taking fit into the professionals’ current workflow and did not require any special processes, techniques or impression materials. We also have learned that dispensers and their patients don’t really enjoy taking deep impressions. We wanted to avoid this if we could.
Back in 2006 we did a field study to help us understand what comprised a really good impression, or what we call the ReSound TRUFIT™ impression. We define it by the following the 16/4 rule: an impression with a canal length of 16 millimeters, or about 4 mm past the second bend. Following this guideline usually provides adequate ear geometry and sufficient information so that we can determine the canal direction also provide best physical fit and acoustic performance. Based on this data, we have an ear light tool available with a 16 millimeter mark on the tip. It serves as a depth gauge for the placement of the otoblock. Once the otoblock is placed using this depth gauge, the clinician can be confident that the resulting impression will be sufficient to build a good-fitting custom product, including Verso IIC. So now no special technique is required to take an impression for an IIC. It just has to be a high integrity impression. Additionally, since most patients could be candidates for Verso, there isn’t really a need for a special tool. However, we have one available if a professional would prefer to have one on hand.