Intranasal Electrical Stimulation for Tear Film Mucin Release
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Solution Overview
Problem
Current treatments for dry eye syndrome are palliative and have limited success in increasing mucin and tear protein levels, which are essential for maintaining a healthy ocular surface.
Innovation Solution
Intranasal electrical stimulation is used to deliver an electrical stimulus to the nasal mucosa, triggering the degranulation of conjunctival goblet cells to release ocular mucins and other tear proteins into the tear film, with feedback mechanisms to optimize the stimulation parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If palliative treatment approaches are used to supplement patient's natural tears or improve residence time of limited tear volume, then tear film residence time is improved, but mucin and tear protein levels remain insufficient
Solution Approach 1:
Instead of treating the eye directly to supplement tears or improve residence time, the invention applies electrical stimulation to the nasal mucosa, which is distant from the target ocular surface. This indirect approach triggers a physiological response that increases mucin and tear protein production, thereby resolving the contradiction between improving residence time and increasing substance quantity.
Solution Approach 2:
The nasal mucosa acts as an intermediary target for electrical stimulation. By stimulating the nasal mucosa, the invention indirectly triggers goblet cell degranulation and increases mucin production in the tear film, rather than directly applying treatments to the eye surface. This intermediary approach enables simultaneous improvement of both residence time and protein levels.
2Quantity of substance
If electrical stimulation is applied to nasal mucosa to trigger goblet cell degranulation, then mucin and tear protein release is increased, but treatment complexity increases
Solution Approach 1:
The electrical stimulation device is designed to be multifunctional, capable of delivering various waveforms (biphasic pulses, sinusoidal waves, direct current) and adjustable parameters (frequency, amplitude, pulse width) to treat different aspects of dry eye syndrome. This universality allows a single device to address multiple therapeutic needs without requiring multiple specialized devices, thereby managing complexity while achieving increased mucin and protein release.
Solution Approach 2:
The invention utilizes adjustable electrical stimulation parameters (frequency, amplitude, pulse width, waveform type) to optimize treatment efficacy. By changing these parameters, the device can effectively trigger goblet cell degranulation and increase mucin production without requiring complex mechanical or chemical mechanisms, thus achieving the desired biological effect with relatively simple device architecture.
3Reliability
If intranasal electrical stimulation is used to increase mucin release, then ocular surface health is improved, but measurement and feedback mechanisms are required
Solution Approach 1:
The invention incorporates feedback mechanisms that monitor the efficacy of electrical stimulation in real-time. By measuring parameters such as tear film stability, mucin concentration, or physiological responses, the system can adjust stimulation parameters to optimize treatment effectiveness. This feedback loop ensures reliable improvement of ocular surface health while providing objective measurement of treatment efficacy.
Solution Approach 2:
The invention replaces direct mechanical or chemical measurement of mucin release with electrical measurement techniques. By using electrical stimulation and measuring electrical or optical parameters (such as tear film breakup time, corneal fluorescence, or impedance changes), the system achieves reliable assessment of ocular surface health without complex mechanical measurement apparatus.
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
This method effectively increases mucin and tear protein levels, improving ocular surface health, reducing dry eye symptoms, and decreasing inflammatory mediators, offering a more effective treatment for dry eye syndrome.
Implementation Method 1
The devices may deliver electrical stimulation to the nasal mucosa to trigger degranulation of conjunctival goblet cells, which in turn releases secretory mucins into the tear fluid
Implementation Method 2
The intranasal stimulation may also trigger release of lysozyme, lactoferrin, and other tear proteins into the aqueous layer of the tear film
Data Source
AI summary
Described here are devices and methods for increasing ocular mucin and other tear protein release using intranasally delivered electrical stimulation. Generally, the devices may deliver electrical stimulation to the nasal mucosa. Intranasal stimulation may trigger degranulation of conjunctival goblet cells, which in turn releases secretory mucins into the tear fluid. The intranasal stimulation may also trigger release of lysozyme, lactoferrin, and other tear proteins into the aqueous layer of the tear film. The methods may further comprise obtaining feedback relating to the efficacy of the delivered electrical stimulation by measuring impedance or an electromyogram (EMG) signal.