Clinical research of low invasion cochlea implant electrode.

Clinical research of low invasion cochlea implant electrode. - Clinical research of low invasion cochlea implant.

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000005867

Enrollment

Registered

2011-06-28

Start date

2011-06-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Bilateral profound sensorineural hearing loss

Interventions

The cochlea implantation is performed under general anesthesia. Same as standard cochlea implant surgeries, an antromastoidectomy is performed, followed by an atticotomy and posteriot tympanotomy and

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Bilateral profound sensorineural hearing loss.

Exclusion criteria

Exclusion criteria: Acute progressive hearing loss. Conductive hearing loss.

Design outcomes

Primary

Measure	Time frame
The therapeutic effects are evaluated at 6 month after the cochlea implant operation using free field audiometry. In free field audiometry test, marked recovery is defined as more than 40dB HL recovery in the mean hearing level of 500Hz, 1000Hz, 2000Hz	—

Countries

Japan

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026