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Electrode with anti-spring back component

A technology of electrodes, electrode devices, applied in the field of medical implants, capable of solving problems such as imperfect solutions

Active Publication Date: 2016-09-21
MED EL ELEKTROMEDIZINISCHE GERAETE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All of these efforts have various problems that make them imperfect solutions

Method used

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  • Electrode with anti-spring back component
  • Electrode with anti-spring back component
  • Electrode with anti-spring back component

Examples

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Embodiment Construction

[0026] Embodiments of the present invention are directed to a cochlear implant electrode having an anti-recoil retraction limiter structure at the electrode opening into the cochlea that resists postoperative retraction of the inserted electrode out of the electrode opening.

[0027] image 3 Structural details of an electrode device portion with a retraction limiter 301 according to one embodiment of the invention are shown. Similar to most conventional cochlear implant electrode devices, there is an extra-cochlear electrode lead 109 having a proximal end couplable to an implanted signal processor (not shown) and an electrode that enters into the outer surface of the implanted cochlea. Open lead distal end 306 . Electrode leads 109 are made of an elastomeric carrier material known in the art that contains electrode wiring for conducting one or more cochlear stimulation signals. The intracochlear electrode array 110 has an array proximal end attached to the lead distal end 3...

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Abstract

An implantable electrode arrangement for a cochlear implant system is described that prevents post-surgical retraction of the electrode. The arrangement includes at least one retraction limiter having an extracochlear portion located at a distal end of the extracochlear electrode lead and an intracochlear portion located at a proximal end of the intracochlear electrode array and made at least in part of a swellable material that expands in response to fluid contact. The intracochlear portion of the retraction limiter is adapted for deformation away from an outer surface of the array proximal end in response to exposure of the swellable material to perilymph fluid within the cochlea after surgical insertion of the electrode array into the implanted cochlea so as to form an anti-retraction projection preventing post-surgical retraction of the array proximal end back through the electrode opening in the outer surface of the implanted cochlea.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Patent Application 61 / 938,308, filed February 11, 2014, and U.S. Provisional Patent Application 61 / 987,568, filed May 2, 2014, both of which are incorporated by reference in their entirety In this article. technical field [0003] The present invention relates to medical implants, and more particularly to implantable electrode assemblies for cochlear implant systems. Background technique [0004] normal ears such as figure 1 Sound is shown transmitting through the outer ear 101 to the eardrum (ear drum) 102 which moves the bones of the middle ear 103 , which in turn vibrate the oval and round window openings of the cochlea 104 . The cochlea 104 is a long, narrow tube that spirals about its axis about two and a half weeks. The cochlea 104 includes an upper channel called the scala vestibular and a lower channel called the scala tympani, which are connected by the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N1/05
CPCA61N1/0541
Inventor 阿卜杜拉曼·阿卜杜拉·哈格尔阿南德汉·达纳辛格克劳德·乔利罗兰·赫斯勒
Owner MED EL ELEKTROMEDIZINISCHE GERAETE GMBH
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