Middle Ear Fixation Structure for Cochlear Implant Positioning
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Solution Overview
Problem
Cochlear implant systems face challenges in stabilizing electronic sensors and electrodes in the middle ear without disrupting existing implants or interfering with middle ear functions, particularly in young children where measuring comfortable electric stimulation levels is difficult due to the tight space and risk of displacing inserted electrodes.
Innovation Solution
An implantable fixation structure featuring a C-shape bone fixation clip and connecting bar with a coupling clip to securely attach cochlear implant elements like sensors, actuators, and microphones to the middle ear, allowing for precise positioning and adjustment without displacing existing electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If cochlear implant elements are placed in the middle ear cavity, then measurement of electrically evoked stapedius reflex threshold is enabled, but the tight space and risk of displacing inserted electrodes occurs
Solution Approach 1:
The patent introduces a fixation structure as an intermediary device that mediates between the cochlear implant elements and the middle ear structures. This fixation structure provides a stable mounting platform for sensors and electrodes while physically separating them from vulnerable positions, thereby enabling measurements without compromising the stability of inserted electrodes.
2Reliability
If fixation structure is added to hold cochlear implant elements, then stable attachment is achieved, but device complexity increases
Solution Approach 1:
The fixation structure is divided into distinct functional segments: a bone fixation clip for anchoring to the skull, a connecting bar for structural support and positioning, and a coupling clip for attaching cochlear implant elements. This segmentation allows each component to be optimized for its specific function while maintaining overall stability.
Solution Approach 2:
The fixation structure serves multiple functions simultaneously: it provides stable anchoring to bone, maintains precise positioning of cochlear implant elements, prevents displacement during surgery and recovery, and enables measurement capabilities. This multi-functionality reduces the need for separate devices for each purpose.
Data Source
AI summary
An implantable fixation structure includes a c-shape bone fixation clip adapted to fit over and attach to a bony bridge element in the middle ear of a patient. A c-shape electrode fixation clip is adapted to fit over and attach to an electrode array element in the middle ear of the patient. A connecting bar has a first end connected to the bone fixation clip and a second end connected to the electrode fixation clip. A coupling clip is connected to the connecting bar between the first end and the second end and adapted to fit over and attach to a cochlear implant element and hold the cochlear implant element in a desired position relative to the middle ear of the patient.