Middle Ear Implant Surgery by Prof. Dr. Thomas Lenarz

Middle ear implant surgery by Prof. Dr. Thomas Lenarz represents a sophisticated surgical option for patients who cannot benefit from conventional hearing aids due to chronic ear canal infections, malformations, or the occlusion effect of a plugged ear canal. Unlike a cochlear implant that replaces the inner ear’s function, a middle ear implant, such as the Vibrant Soundbridge, works by mechanically stimulating the ossicles, the tiny bones responsible for transmitting sound. Prof. Lenarz utilizes a high-precision fixation technique to attach a floating mass transducer directly to the incus or the round window membrane. This direct mechanical drive eliminates the feedback and distortion common in external devices, providing a sound quality that patients frequently describe as more natural and vibrant, particularly in the high-frequency range essential for understanding speech. The clinical superiority of the middle ear implant under Prof. Lenarz’s direction is supported by extensive longitudinal data from the Hannover Medical School. Research indicates that patients undergoing this procedure achieve significantly greater functional gain than those using top-tier conventional hearing aids, especially in noisy social settings. For individuals with mixed hearing loss or localized middle-ear damage, the surgery provides a bypass of the conductive barrier. Using a specialized 3D surgical microscope, the doctor can navigate the delicate tympanic cavity with sub-millimeter accuracy, ensuring the implant is positioned to maximize mechanical vibration without damaging the sensitive structures of the inner ear. Studies have shown that this precision leads to a stable hearing threshold over time, with a very low rate of secondary adjustments. A unique feature of this surgical package is the integration of intraoperative laser Doppler vibrometry, a technology that allows the surgical team to measure the actual vibrations of the ear bones once the implant is attached. This real-time verification ensures that the device is functioning at peak efficiency before the procedure is finalized. Furthermore, the pre-operative high-resolution CT scan of the temporal bone allows Prof. Lenarz to select the ideal "coupling" method for the patient’s specific anatomy, whether that involves a clip on the long process of the incus or a specialized mold for a malformed middle ear.