Tjellström A, Lindström J, Hallén O, Albrektsson T, Brånemark P I
Am J Otol. 1981 Apr;2(4):304-10.
The purpose of this study is to investigate the possibilities for attaching a new type of direct bone conduction hearing aid. Using a gentle surgical technique, titanium screws were inserted into the temporal bone of fourteen patients suffering from hearing impairment. The implants became integrated with the living bone tissue and have remained so for a follow-up period of, at present, two to four years. It is therefore concluded that titanium implants may be osseointegrated in the temporal bone in a similar manner to that previously described for long bones. The bone-anchored titanium screws were connected to a permanently skin-penetrating abutment, which in turn was used for attachment to a hearing aid. In this way a direct bone conduction without obstructing soft tissue layers is secured. The permanent skin penetration caused no adverse soft tissue effects. The new system has improved pure-tone hearing threshold by about 15 dB. Further research is aimed at the construction of a new hearing aid that is better adapted to the impedance situation existing in the directly bone-anchored cases.
本研究的目的是探讨植入新型直接骨传导助听器的可能性。采用温和的外科技术，将钛螺钉植入14名听力受损患者的颞骨。植入物与活骨组织融合，并在目前两到四年的随访期内一直保持这种状态。因此得出结论，钛植入物在颞骨中可能以与先前描述的长骨类似的方式实现骨整合。骨锚定钛螺钉连接到一个永久穿透皮肤的基台，该基台又用于连接助听器。通过这种方式确保了直接骨传导而不会阻碍软组织层。永久穿透皮肤未引起不良软组织影响。新系统使纯音听力阈值提高了约15分贝。进一步的研究旨在构建一种更适合直接骨锚定情况下存在的阻抗情况的新型助听器。
