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Implant resonance for increased force transmission in passive transcutaneous bone conduction systems

IP.com Disclosure Number: IPCOM000243686D
Publication Date: 2015-Oct-12
Document File: 2 page(s) / 92K

Publishing Venue

The IP.com Prior Art Database

Abstract

The efficiency of vibrations transfer in passive transcutaneous bone conduction systems is inferior to percutaneous systems The transmission of vibrations is significantly attenuated through the skin in transcutaneous bone conduction solutions and this limits the degree of treatable hearing loss

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Title

Implant resonance for increased force transmission in passive transcutaneous bone conduction systems

Problem Addressed 

The efficiency of vibrations transfer in passive transcutaneous bone conduction systems is inferior to percutaneous systems.  The transmission of vibrations is significantly attenuated through the skin in transcutaneous bone conduction solutions, and this limits the degree of treatable hearing loss.

Known Solutions/Approaches

One current method adds a compliant component between the actuator and the skull to boost the high frequency performance.  Another solution shows a suspended magnet in an implant.

Novelty Statement

The novel solution is a method for suspending masses in the implant to create a resonance-boost of the output force at one or more desired frequencies.

Description (Components, Process)

Suspending a mass (e.g., magnet(s)) in the implant casing creates a resonance that increases the force transmission.  However, the suspended mass does not have to be magnetic.  The implant can also contain multiple resonant systems.  For example, two or more magnets can be suspended by springs of varying stiffness and/or the mass of the suspended components can vary.  This enables the creation of multiple resonance.

Figure 1: Components and design

Example Embodiment

Figure 2: Processing vibrations

Figure 3: Level of vibrations transmitted to cochlea (estimation, no tests are yet performed):

Benefits and Advantages

High frequencies occur when the...