Perimodiolar Implant Performance in Adults With Low-Frequency Residual Hearing

NCT ID: NCT04741009

Last Updated: 2025-07-18

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 10 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2021-12-16
• Study Completion Date: 2025-06-16

Brief Summary

The purpose of the feasibility study is to investigate hearing performance (audiometry and speech perception) using the CI632 in a group of adults (n=15) with low-frequency residual hearing who meet inclusion criteria.

Conditions

Sensorineural Hearing Loss; Low-Frequency Residual Hearing

Study Design

• Allocation Method: NA
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: DEVICE_FEASIBILITY
• Blinding Strategy: NONE

Study Groups

CI632 Slim Modiolar Electrode

Group Type: EXPERIMENTAL

CI632 Slim Modiolar Electrode

Intervention Type: DEVICE

Cochlear Ltd CI632 cochlear implant with Slim Modiolar Electrode

Interventions

CI632 Slim Modiolar Electrode

Cochlear Ltd CI632 cochlear implant with Slim Modiolar Electrode

Intervention Type: DEVICE

Eligibility Criteria

Inclusion Criteria

1. 18 years-of-age or older at the time of surgery.

2. Low-frequency threshold at 500 Hz ≤ 50 dB HL and high-frequency pure-tone average (PTA), 2000-8000 Hz ≥ 65 dB HL in the ear to be implanted.

3. Pure-tone average (PTA) (0.5k, 1k, 2k Hz) > 30 dB HL in the contralateral ear.

4. CNC word recognition scores (mean of two lists) ≤ 60% in the ear to be implanted and ≤ 80% in the contralateral ear.

5. English spoken as a primary language.

6. Willing and able to provide written informed consent.

Exclusion Criteria

1. Individuals greater than or equal to 70 years at the time of surgery.

2. Duration of severe to profound sensorineural hearing loss > 20 years per self-report.

3. Onset of sensorineural hearing loss, for the purpose of this study, prior to 5 years-of-age.

4. Ossification or any other cochlear anomaly that might prevent complete insertion of the electrode array.

5. Conductive overlay of 15 dB or greater at two or more frequencies, in the range of 250 through 1000 Hz in the ear to be implanted.

6. Hearing loss of neural or central origin.

7. Diagnosis of Auditory Neuropathy.

8. Active middle-ear infection.

9. Medical or psychological conditions that contraindicate undergoing surgery as determined by the Investigator.

10. Unrealistic expectations on the part of the subject, regarding the possible benefits, risks, and limitations that are inherent to the device and/or procedure, as determined by the Investigator.

11. Additional handicaps that would prevent or restrict participation in the audiological evaluations as determined by the Investigator.

12. Unable or unwilling to comply with the requirements of the clinical investigation as determined by the Investigator.

13. Investigator site personnel directly affiliated with this study and/or their immediate family (spouse, parent, child, or sibling).

14. Cochlear employees or employees of a Contract Research Organization (CRO) or contractors engaged by Cochlear for the purposes of this investigation.

15. Currently participating, or has participated in the last 30 days, in another interventional clinical investigation/trial involving an investigational drug or device.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 69 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Cochlear

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

UMass Memorial Medical Center

Worcester, Massachusetts, United States

Midwest Ear Institute

Kansas City, Missouri, United States

Cleveland Clinic

Cleveland, Ohio, United States

University Hospitals

Cleveland, Ohio, United States

Countries

United States

Other Identifiers

CAM5776

Identifier Type: -

Identifier Source: org_study_id