Welcome to Cochlear™ Quick Tips. The purpose behind Quick Tips is to give you “bite-sized” information that you can use when working with our products. In this first edition, we will discuss Cochlear™ Nucleus® Depth Gauges.
What is a depth gauge?
- Depth gauges are surgical components that utilize the same materials and have the same handling characteristics as “live” electrode arrays
When should a Depth Gauge be considered?
- To aid in assessing the patency of the cochlea lumen if pre-operative imaging is inconclusive or unavailable
- To assess if insertion depth is adequate
- To assist in determining the most appropriate implant model
- During explant/re-implant procedures
What Depth Gauges are available?
- Cochlear has two types of depth gauges: the Contour Advance Depth Gauge and Straight Depth Gauge
- The Contour Advance Depth Gauge is more commonly used of the two depth gauge options. This is due to its benefits in obstruction/fibrosis/ossification, common cavity, incomplete partition, and cochlear hypoplasia cases
Can I see an example of how this can be used?
Anything else I should know?
- Depth gauges are not approved for use as an implant or stent.
- Monopolar electrocautery should not be performed with a depth gauge in position.
- The Straight Depth Gauge DOES NOT have the same the same dimensions or handling characteristics as the Slim Straight electrode and does not have a smooth lateral surface or basal support. Size differential between slim straight and straight electrode arrays may create false-positive or false-negative feedback with use.
- For more information, please reach out to your local Cochlear representative or call Cochlear’s Surgical-on-Call at (877) 279-5411.
To learn more about Cochlear™ Nucleus® Implants, visit our website.