Safety and Efficacy of a Drug Eluting Slim Modiolar Electrode Array

Launched by COCHLEAR · Sep 16, 2024

Keywords

ClinConnect Summary

This clinical trial is studying a new type of cochlear implant called CI632D, which is designed to help people with hearing loss. This implant slowly releases a medication called dexamethasone, which helps reduce inflammation and tissue damage after surgery. The goal is to see if this new implant can improve hearing better than standard cochlear implants by minimizing negative reactions in the ear after the procedure. The trial is open to adults aged 65 to 74 who have moderate to profound sensorineural hearing loss, meaning their inner ear or nerve that sends sound signals to the brain is damaged.

Participants in the study will receive the CI632D implant and will undergo hearing tests to evaluate how well the implant is working. To be eligible, candidates should have specific levels of hearing loss and be able to understand the language used in the trial. It's important for potential participants to know that certain medical conditions, like active ear infections or specific ear surgeries, would prevent them from joining the study. Overall, this trial aims to find out if this innovative implant can provide better hearing outcomes for those affected by hearing loss.

Gender

ALL

Eligibility criteria

• Inclusion Criteria:
• • 18 years or older, at time of consent.
• • Postlinguistic moderately severe to profound sensorineural hearing loss, defined by a four frequency (500, 1000, 2000, 4000 Hz) pure-tone average unaided threshold (PTA4) ≥ 60 decibels hearing level (dB HL), in the ear to be implanted (For this study, moderately severe is defined by a four-frequency, pure-tone average threshold (PTA4) over the range 500 through 4000 Hz of more than 55 dB HL through 70 dB HL, inclusive. Profound is defined by a PTA4 of more than 90 dB HL).
• • Pure-tone average unaided threshold (500 through 4000 Hz) ≥ 30 dB HL, in the contralateral ear.
• • Preoperative aided word score ≤ 40% correct in the ear to be implanted.
• • Evidence of pneumococcal vaccination (e.g., Pneumovax) according to local guidelines.
• • Candidate is proficient in the language used to assess speech perception performance.
• • Willing and able to provide written informed consent.
• Exclusion Criteria:
• • Intra-axial (within the brain) lesions or deafness due to lesions of the acoustic nerve affecting the ear to be implanted.
• • Middle ear infection (including acute otitis media, chronic otitis media, suppurative otitis media, or serous drainage) in the ear to be implanted either at the time of surgery or within 3 months prior to enrolment.
• • Active autoimmune disease or active immunosuppressive therapy.
• • Presence of a tympanic membrane perforation or a history of otologic surgery within 3 months prior to enrolment, in the ear to be implanted.
• • Previously reported diagnosis of auditory neuropathy, in the ear to be implanted.
• • Previously reported diagnosis, in the ear to be implanted, of Large Vestibular Aqueduct Syndrome (LVAS), Meniere's disease, or cochlear hydrops.
• • Ossification, otosclerosis, malformation or any other cochlear anomaly, such as common cavity, that might prevent complete insertion of the electrode array, in the ear to be implanted.
• • Current cerebrospinal fluid (CSF) shunts or drains, existing perilymph fistula, skull fracture or CSF leaks.
• • Previously reported diagnosis of bacterial meningitis.
• • Known allergic reaction or contraindication to dexamethasone or corticosteroids.
• • Severe, or poorer, bilateral sensorineural hearing loss prior to 5 years of age, as reported by the subject. (For this study, severe is defined by a PTA4 of more than 70 dB HL through 90 dB HL, inclusive).
• • Severe, or poorer, sensorineural hearing loss for more than 20 years, as reported by the subject, in the ear to be implanted.
• • Prior cochlear implantation in either ear.
• • Medical plan for cochlear implantation during the clinical investigation, contralateral to the ear to be implanted.
• • Medical or psychological conditions that contraindicate general anaesthesia, surgery, or participation in the clinical investigation as determined by the Investigator.
• • Unrealistic expectations on the part of the subject regarding the possible benefits, risks, and limitations inherent to the surgical procedure(s) and prosthetic devices, as determined by the Investigator.
• • Women who are pregnant.
• • Additional disabilities that may affect the subject's participation or safety during the clinical investigation.
• • Unable or unwilling to comply with all the requirements of the clinical investigation as determined by the investigator.
• • Investigator site personnel directly affiliated with this study and/or their immediate families. Immediate family is defined as spouse, parent, child, or sibling.
• • Cochlear employees or employees of Contract Research Organisations or contractors engaged by Cochlear for the purposes of this investigation.
• • Current participation, or participation in another interventional clinical study/trial in the past 30 days, involving an investigational drug or device unless Cochlear sponsored and determined by Investigator or Sponsor to not impact this investigation.