Eeg-Olofsson Måns, Håkansson Bo, Reinfeldt Sabine, Taghavi Hamidreza, Lund Henrik, Jansson Karl-Johan Fredén, Håkansson Emil, Stalfors Joacim
*Department of Otorhinolaryngology, Head and Neck Surgery, Sahlgrenska University Hospital, Sahlgrenska Academy, University of Gothenburg; †Department of Signals and Systems, Chalmers University of Technology; and ‡Clinic of Oral and Maxillofacial Radiology, Department of Oral and Maxillofacial Radiology, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Otol Neurotol. 2014 Apr;35(4):679-85. doi: 10.1097/MAO.0000000000000203.
To report on preoperative assessment, surgery, and audiologic outcome of the first patient implanted with the bone conduction implant (BCI).
The BCI is a bone conduction hearing device with an intact skin solution where the transducer is implanted close to the ear canal opening. By avoiding a percutaneous screw attachment to the skull, the BCI is anticipated to reduce complications associated with the Bone-Anchored Hearing Aid (BAHA) solution.
The first patient to receive a BCI was a 42-year-old woman with a unilateral mixed hearing loss due to tympanosclerosis. Preoperative and postoperative cone beam computed tomography and a virtual planning tool for 3D reconstruction were used to optimize and control the position of the BCI in the mastoid. The transducer was placed in a 5-mm deep seating in the mastoid and secured with a titanium bar. Free field tone and speech audiometry were conducted to evaluate the audiologic outcome at baseline (1 month postoperatively) and 1 month after baseline.
The BCI was placed in the position according to the preoperative 3D planning. On average, the tone thresholds improved by 30 dB, speech reception thresholds by 25.5 dB and speech signal-to-noise ratio by 9.7 dB. The surgical procedure was considered simple and safe.
The BCI can be implanted by a safe and easy surgical procedure. 3D preoperative planning can be helpful to optimize the BCI position. The BCI is a realistic alternative to the BAHA.
报告首例植入骨传导植入物（BCI）患者的术前评估、手术过程及听力结果。
BCI是一种具有完整皮肤解决方案的骨传导听力装置，其换能器植入靠近耳道开口处。通过避免经皮颅骨螺钉固定，预计BCI可减少与骨锚式助听器（BAHA）解决方案相关的并发症。
首例接受BCI植入的患者为一名42岁女性，因鼓室硬化症导致单侧混合性听力损失。术前和术后使用锥形束计算机断层扫描及三维重建虚拟规划工具，以优化和控制BCI在乳突中的位置。将换能器置于乳突内5毫米深的位置，并用钛棒固定。在基线（术后1个月）和基线后1个月进行自由声场纯音和言语听力测试，以评估听力结果。
BCI按照术前三维规划放置。平均而言，纯音阈值提高了30分贝，言语接受阈值提高了25.5分贝，言语信噪比提高了9.7分贝。手术过程被认为简单且安全。
BCI可通过安全简便的手术程序植入。术前三维规划有助于优化BCI位置。BCI是BAHA的一种切实可行的替代方案。
