Intratympanic Injector Canal Guide for Precise Drug Delivery
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Solution Overview
Problem
Current methods for treating hearing loss, particularly SensoriNeural Hearing Loss (SNHL), face challenges in delivering therapeutic agents directly and effectively to the inner ear due to anatomical barriers and the need for precise placement, often resulting in variable efficacy and risk of adverse effects.
Innovation Solution
A system comprising a canal guide and needle assembly designed for intratympanic delivery, featuring a flexible shaft with a sharpened tip, adjustable alignment, and steerable components to facilitate precise penetration of the tympanic membrane and targeted delivery of therapeutics to the middle and inner ear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If direct intratympanic delivery is used to improve treatment efficacy, then therapeutic effect is improved, but risk of adverse effects increases
Solution Approach 1:
The patent introduces a canal guide as an intermediary device that mediates between the external injection system and the intratympanic space. The guide provides a controlled pathway with alignment features and depth markers, allowing precise drug delivery while minimizing direct manipulation risks to the tympanic membrane and middle ear structures.
Solution Approach 2:
The patent replaces manual blind needle insertion with a guided mechanical system featuring alignment fins, depth markers, and a structured canal guide. This systematic mechanical approach substitutes for imprecise manual techniques, providing controlled penetration depth and angle to reduce adverse effects while maintaining therapeutic efficacy.
2Manufacturing precision
If precise placement is achieved through complex guidance systems, then delivery accuracy is improved, but device complexity increases
Solution Approach 1:
The patent divides the delivery system into segmented components: an external injection mechanism, a canal guide with alignment features, and an intratympanic delivery element. This segmentation allows each component to perform a specific function with optimized simplicity, reducing overall device complexity while maintaining precise delivery accuracy through coordinated operation of the segments.
Solution Approach 2:
The patent applies local quality by providing guidance features only where needed in the ear canal pathway, rather than complex guidance throughout the entire device. Alignment fins and depth markers are placed locally at critical positions to provide sufficient accuracy without requiring elaborate guidance systems throughout the structure, thereby limiting device complexity.
3Duration of action of moving object
If repeated injections are administered to maintain therapeutic effect, then treatment duration is extended, but cumulative risk increases
Solution Approach 1:
The patent enables self-service by providing a patient-administerable intratympanic injection system that does not require repeated clinical visits. The simplified device allows patients to perform their own injections at home, extending treatment duration while actually reducing cumulative risk by eliminating exposure to clinical environment contaminants and reducing the need for multiple professional interventions.
Data Source
AI summary
A system for delivering one or more therapeutics to a region of the ear, the region being internal to a tympanic membrane. The system includes a canal guide configured to be inserted within and fittingly engaged with walls of the ear canal and needle assembly having a flexible shaft sized to extend through the canal guide. The canal guide provides alignment of the needle assembly within the ear canal relative to the tympanic membrane. The canal guide includes a viewing lumen extending between a proximal end to a distal-most end of the canal guide and is sized to remain external to the tympanic membrane. The canal guide includes a guide lumen extending to a distal opening near the distal-most end of the canal guide. The guide lumen curves from a first axis to a second axis. Related devices, systems, and methods are provided.