Electrode for implantation into cochlea

专利名称：Electrode for implantation into cochlea发明人：Hansen, Carl Christian,Lauridsen, Ole Mork申请号：EP78101419.6申请日：19781121公开号：EP0002226A1公开日：19790613

专利附图：

摘要：An electrode for implantation into cochlea. The purpose is to establishelectrical communication to the acoustic nerves of the human ear, substantially in thearea of cochlea containing the acoustic nerves pertaining to that part of the audiblespectrum, which is relevant to the intelligibility of speech. The rpblem is that the

electrode has to be inserted into about two turns of cochlea, which implies a risk ofdamaging het interior walls of cochlea and possibly the acoustic nerves too because thetip of the electrode will act like a chisel. An improved electrode is designed as a forkhaving two prongs (5, 6) and an shank (8), each prong having a length, which correspondsessentially to the length of the turn in cochlea, into which it is to be inserted. Further,each prong terminates in a bevelled guiding surface (16). The prongs of shorter lengththan prior art electrodes, which are to be inserted through individual openings tocochlea, now have to pass through only a single turn of cochlea and are during thisinsertion prevented from cutting into the walls of cochlea due to the presence of thebevelled guiding surface. The guiding surface (16) is made up of an attached, drop-shaped pilot member or by bending the outermost end of a support member to form aneyelet. The two prongs have uneven lengths due to different lengths of the turns ofcochlea.

申请人：Hansen, Carl Christian,Lauridsen, Ole Mork

地址：Sadolinsgade 114 B DK-5000 Odense DK,Kärvej 13 DK-3520 Farum DK

国籍：DK,DK

代理机构：Fleck, Thomas, Dr.

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