NCT00748540已完成不适用
Clinical Trial of the Vibrant Soundbridge as a Treatment for Conductive and Mixed Hearing Losses, Using Direct Round Window Cochlear Stimulation.
适应症
干预措施
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 50
- 试验地点
- 22
- 主要终点
- Speech Perception in Quiet (Monosyllables) in Patients Implanted With Vibrant Soundbridge
研究概览
简要总结
The purpose of this investigation is to collect feasibility data to assess the safety and efficacy of the Vibrant Soundbridge (VSB), a medical device designed to provide benefit in aided hearing thresholds, speech perception and sound quality to certain individuals with hearing loss with minimal changes in residual hearing. The VSB is currently indicated for adults with moderate-to-severe sensorineural hearing loss. Under the present investigation, adults with conductive and mixed hearing losses who are not successful users of traditional amplification will be assessed.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Adults, 18 years of age or older at time of implantation
- •English as the primary language
- •Appropriate motivation and expectation levels
- •Geographically and physically able to return to the investigational center for scheduled evaluations and follow-up appointments.
- •At least a 28-day unsuccessful hearing aid trial (within the past 24 months prior to enrolment).
- •Persons who after being informed that a different hearing aid than the one they currently have may provide improved hearing, still request an implant.
- •Ability to undergo general anesthesia
- •Audiological tests suggest either a conductive or mixed hearing loss. The non-implanted ear may fall outside these criteria; however, threshold levels may not be worse than severe sloping to profound.
- •Conductive Hearing Loss
- •Pure-tone bone-conduction threshold levels in the ear to be implanted shall fall at or within the levels stated below. There should be an air-bone gap of 15 dB HL or more at three or more of the frequencies 500, 1000, 1500, 2000, 3000, and 4000 Hz. Pure-tone air-conduction levels should indicate the presence of at least a moderate hearing loss of at least 41 dB HL. Air conduction levels are not limited on the upper end.
- •Upper Limits of Bone Conduction Thresholds for Conductive Hearing Loss Frequency (kHz) 0.5 1.0 1.5 2.0 3.0 4.0 Bone Conduction upper limit (dBHL) <25 <25 <25 <25 <25 <25
- •Mixed Hearing Loss
- •Pure-tone bone conduction threshold levels in the ear to be implanted shall fall at or within the levels stated below. There should be an air-bone gap of 15 dB HL or more at three or more of the frequencies 500, 1000, 1500, 2000, 3000, and 4000 Hz. Bone conduction thresholds at least three of the frequencies should be 26 dB or greater. Pure-tone air-conduction thresholds should be, on average, at least moderately impaired of 41 dB or greater. Air-conduction levels are not limited on the upper end.
- •Lower and Upper Limits of Bone Conduction Thresholds for Mixed Hearing Loss Frequency (kHz) 0.5 1.0 1.5 2.0 3.0 4.0 Bone Conduction lower limit (dBHL) 0 0 0 0 0 0 Bone Conduction upper limit (dBHL) 45 50 55 65 65 65
- •Good potential for aided speech recognition as indicated by a pre-operative monosyllabic word score of > 30% in the ear to be implanted as measured under headphones at 40 dB SL or at MCL
- •Hearing aid trial with appropriately fitted hearing aids of at least 28 days duration within the past 24 months, unless the subject is unable to wear hearing aids for medical reasons
- •Most recent audiometric data, if available, judged to be of good test-retest reliability.
排除标准
- •Hearing loss of purely sensorineural origin
- •Retrocochlear or central auditory disorders
- •Active middle ear infection
- •Tympanic membrane perforation, ears with previously reconstructed tympanic membranes may be included
- •Bone-conduction thresholds in the ear to be implanted that have demonstrated a recent fluctuation at two or more frequencies of 15 dB in either direction in the last 6 months, as demonstrated by serial audiograms.
- •History of post-adolescent, inner-ear disorders, such as vertigo or labyrinthitis
- •Chronic or non-revisable vestibular or balance disorders
- •Middle ear infections not responsive to medical treatment
- •Skin or scalp conditions that may preclude attachment of the Audio Processor or that may interfere with the use of the Audio Processor
- •Chronic pain in or around the head
- •Current or previous use of an active hearing implant in either ear.
- •Any known physical, psychological, or emotional disorder that may interfere with the completion of scheduled follow-up evaluations
- •Developmental delays or organic brain dysfunction
研究组 & 干预措施
Implanted
Experimental
Implanted with Vibrant Soundbridge
干预措施: Vibrant Soundbridge (Device)
结局指标
主要结局
Speech Perception in Quiet (Monosyllables) in Patients Implanted With Vibrant Soundbridge
时间窗: 6 months post initial activation
Percent correct on words in quiet at the preoperative interval compared to 6 month post operative interval.
次要结局
- Speech Perception in Noise (HINT Sentences) in Patients Implanted With Vibrant Soundbridge.(6 months post initial activation)
- Functional Gain Compared to Preoperative Unaided Condition in Patients Implanted With Vibrant Soundbridge.(6 months post initial activation)
- Residual Hearing in Patients Implanted With Vibrant Soundbridge(10 months post initial activation)
研究者
研究点 (22)
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