Expandable Ear Canal Sealing Bladder for Acoustic Isolation
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Solution Overview
Problem
Current ear devices do not effectively utilize inflatable or expandable systems to achieve sound isolation and sealing, which can lead to poor fit, comfort, and inadequate consideration of ear anatomy and physiology.
Innovation Solution
An earpiece with an expandable sealing section, including an inflatable bladder and ambient sound microphone, is designed to acoustically seal the medial portion of the external auditory canal, providing improved sound isolation and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fixed sealing sections are used in earpieces, then the device structure is simple, but the sound isolation and sealing effectiveness are insufficient
Solution Approach 1:
The sealing section transitions from a fixed static structure to a dynamic inflatable structure. The bladder can be inflated and deflated to adapt to different ear canal shapes and sizes, providing effective sealing while maintaining structural simplicity through the use of a flexible membrane and air chamber system.
Solution Approach 2:
An inflatable bladder system is introduced into the sealing section, using pneumatic pressure to expand the sealing surface area against the ear canal wall. This pneumatic mechanism provides reliable sealing effectiveness without requiring complex mechanical adjustment components.
2Adaptability or versatility
If traditional fixed sealing sections are used, then the manufacturing process is simple, but the adaptability to varying ear anatomies is poor
Solution Approach 1:
The sealing section uses an inflatable bladder that can dynamically adjust its volume and shape to match different ear canal geometries. This dynamic adaptation capability is achieved through a simple inflatable membrane structure that can be manufactured using standard molding techniques, balancing manufacturability with high adaptability.
Solution Approach 2:
The sealing section utilizes changes in volumetric parameters through inflation and deflation of the bladder to adapt to varying ear canal dimensions. This parameter-based adaptation allows a single manufactured design to serve multiple ear anatomies, maintaining ease of manufacture while achieving versatility.
3Reliability
If inflatable systems are introduced to improve sealing, then sound isolation improves, but the device complexity increases
Solution Approach 1:
The sealing mechanism uses a pneumatic inflatable bladder system that provides effective sealing through air pressure. This pneumatic approach achieves reliable sealing effectiveness while keeping the overall mechanism relatively simple, avoiding the need for complex mechanical actuators or multiple sealing stages.
Solution Approach 2:
The sealing section employs a flexible inflatable bladder made of thin, compliant material that can conform to the ear canal surface. This flexible membrane approach provides effective sealing without requiring rigid or complex structural components, thereby limiting the increase in device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The expandable sealing system enhances sound isolation by effectively sealing the ear canal, improving comfort by accommodating varying ear anatomies, and providing efficient acoustic signal delivery.
Implementation Method 1
a sealing section, where the sealing section includes an expandable bladder
Data Source
AI summary
An insertion device includes a stent and a plurality of sealing elements where each sealing element is operatively rotationally attached to the stent.