Tympanic Membrane Drug Delivery via Passive Diffusion
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Solution Overview
Problem
Current treatments for inner ear disorders often require invasive methods such as injections, which are uncomfortable and carry risks like perforation and infection, and existing non-invasive methods still involve surgical interventions.
Innovation Solution
A pharmaceutical composition comprising an active agent and a pharmaceutically acceptable vehicle with diffusing and solubilizing agents, applied topically in the ear canal or on the tympanic membrane, allowing passive diffusion into the inner ear without perforation, using ingredients like vegetable oils, terpenes, and antioxidants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If invasive injection methods are used to treat inner ear disorders, then the active ingredient can be delivered directly to the inner ear, but patient discomfort and risks of perforation or infection increase
Solution Approach 1:
The tympanic membrane serves as an intermediary structure that allows passive diffusion of the pharmaceutical composition from the ear canal into the inner ear without requiring direct injection or perforation. This mediator approach eliminates the need for invasive procedures while maintaining effective drug delivery to the target site.
Solution Approach 2:
The patent replaces the mechanical injection system with a passive diffusion system. Instead of using needles and surgical intervention to force the drug into the inner ear, the composition is formulated to naturally diffuse through the tympanic membrane, substituting mechanical intrusion with a chemical/physical diffusion process.
2Reliability
If multiple injections are administered over several days, then the treatment effectiveness is maintained, but patient discomfort and treatment complexity increase
Solution Approach 1:
The pharmaceutical composition is formulated with properties that enable it to be administered once and remain effective, eliminating the need for repeated injections. The preliminary formulation includes appropriate solubilizing and diffusing agents that ensure sustained delivery of the active ingredient, reducing the treatment frequency from multiple days to a single administration.
3Reliability
If surgical intervention is used to access the inner ear, then direct drug delivery is achieved, but invasiveness and recovery time increase
Solution Approach 1:
The tympanic membrane is utilized as a natural intermediary pathway that provides direct access to the inner ear without requiring surgical intervention. This approach maintains the accuracy of drug delivery to the target site while eliminating the complexity and invasiveness of surgical procedures.
Solution Approach 2:
The patent replaces the surgical mechanical system with a passive diffusion system. Instead of using surgical instruments and incisions to deliver the drug, the composition is formulated to naturally diffuse through the tympanic membrane, substituting complex mechanical surgical procedures with a simpler chemical/physical diffusion process.
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
Enables non-invasive delivery of therapeutic agents directly to the inner ear, reducing discomfort and risks associated with invasive procedures while effectively treating inner ear and neurological disorders.
Implementation Method 1
passive diffusion into the inner ear without perforation
Implementation Method 2
pharmaceutically acceptable vehicle with diffusing and solubilizing agents
Data Source
AI summary
A pharmaceutical composition useful for the local administration onto the tympanic membrane and diffusion through the tympanic membrane without perforation of the membrane, for use in the treatment of an ear disorder or a neurological disorder such as hearing loss. Also, a device useful for the local administration onto the tympanic membrane of the pharmaceutical formulation of the invention.