RestorEar is at the forefront of cold therapy research. Between our devices to support hearing health after noise exposure (ReBound), our cooling probe currently being studied in first-in-human trials for cochlear implant surgeries (ReSurg), and our multiple tinnitus projects, we are constantly studying innovative ways to better improve health with cooling. Now, new research from RestorEar co-founder Dr. Suhrud Rajguru’s laboratory shows another potential target for cold therapy: the vestibular system.
In a new paper published in Otology & Neurotology, researchers from Dr. Rajguru’s laboratory developed an innovative device to provide cooling to the vestibular system—a sensory system located in the inner ears that helps us maintain our sense of balance. Cooling, or mild therapeutic hypothermia (MTH), has already shown promise in protecting the cochlea (the part of the inner ear responsible for hearing), especially after loud noise exposure or during invasive procedures like cochlear implant surgery. Scientists believe cooling might also help preserve vestibular function.
Because of this, the research team developed a device that uses gentle cooling delivered through the ear canal, aiming to protect these sensitive structures from inflammation and cellular stress. The key innovation? It cools both the hearing and balance structures of the inner ear without getting in the way of surgery.
Testing this device on human cadaver heads showed promising results:
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Temperatures in critical inner ear areas (like the cochlea and semicircular canals) dropped by 4–6°C during a 30-minute treatment.
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Core body temperature, measured via the nasopharynx, stayed stable, indicating safe localized cooling without whole-body effects.
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A computer model confirmed that the temperature reductions were accurate and effective.
This technique could lead to safer ear surgeries and better protection against inner ear trauma, all through a noninvasive and easy-to-use cooling device. It’s a step forward in making inner ear protection more practical in real-world clinical settings.
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Read the full research article here.