Plasma Sinus Surgery Device Tissue Selectivity
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Solution Overview
Problem
Conventional sinus surgery tools lack tissue selectivity, causing damage to surrounding tissues and bone during the removal of polyps and biofilms, and fail to preserve the sinus lining, leading to scarring and ineffective treatment of chronic sinusitis.
Innovation Solution
A plasma device that generates chemically reactive species, including ions, radicals, and photons, is used to selectively remove specific tissues with minimal effect on adjacent tissues or underlying bone, utilizing tailored plasma conditions and specific electrode structures to deliver electrical energy and precursor feedstocks, allowing for precise treatment of sinus cavities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional mechanical cutting tools are used to remove tissue, then tissue removal is achieved, but surrounding tissues and bone are damaged due to lack of tissue selectivity
Solution Approach 1:
The patent changes the fundamental parameter of tissue interaction from mechanical cutting to plasma-based chemical reactions. By controlling plasma parameters (gas composition, power, pressure), the system achieves selective tissue removal based on chemical reactivity differences between tissue types, thereby improving precision while reducing damage to surrounding structures.
Solution Approach 2:
The invention replaces the mechanical cutting system with a plasma-based system that uses chemically reactive species (ions, radicals, photons) to selectively remove tissue through chemical reactions rather than mechanical force, eliminating the harmful mechanical cutting effects on surrounding tissues and bone.
2Productivity
If the sinus cavity is stripped of all mucosa to treat sinusitis, then the sinus cavity is cleared, but the sinus lining reforms from scar tissue rather than epithelial mucosa
Solution Approach 1:
The plasma system applies different treatment intensities and durations to different areas of the sinus cavity. By controlling plasma exposure locally, the system can selectively remove pathological tissue while preserving or stimulating healthy mucosa regeneration, ensuring that the sinus lining reforms from epithelial mucosa rather than scar tissue.
Solution Approach 2:
The plasma treatment can be applied in controlled periodic pulses, allowing for selective removal of pathological tissue while giving healthy tissue time to regenerate. This periodic application pattern helps preserve the sinus lining's ability to reform properly rather than creating widespread scarring.
3Manufacturing precision
If plasma is used to selectively remove tissue, then tissue selectivity is achieved, but device complexity increases due to plasma generation requirements
Solution Approach 1:
The plasma device is designed to perform multiple functions: generating plasma, delivering it to tissue, controlling treatment parameters, and monitoring treatment progress. By integrating these functions into a single system, the patent achieves tissue selectivity while managing device complexity through functional integration rather than separate components.
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 plasma device enables selective and precise removal of targeted tissues with minimal damage to surrounding structures, preserving the sinus lining and effectively treating sinusitis by controlling chemical pathways and reactivity, reducing the risk of perforation and heat-related damage.
Implementation Method 1
Electrical discharges in dense media, such as liquids and gases at or near atmospheric pressure, can, under appropriate conditions, result in plasma formation. Plasmas have the unique ability to create large amounts of chemical species, such as ions, radicals, electrons, excited-state (e.g., metastable) species, molecular fragments, photons
Implementation Method 2
Plasmas are also capable of generating photons including energetic ultraviolet photons that have sufficient energy to initiate photochemical and photocatalytic reaction paths in biological and other materials that are irradiated by the plasma photons
Implementation Method 3
Electrical discharges in dense media, such as liquids and gases at or near atmospheric pressure, can, under appropriate conditions, result in plasma formation
Implementation Method 4
The plasma species are capable of modifying the chemical nature of tissue surfaces by breaking chemical bonds, substituting or replacing surface-terminating species (e.g., surface functionalization) through volatilization, gasification or dissolution of surface materials (e.g., etching)
Data Source
AI summary
A method for treating a sinus cavity is provided. The method includes the steps of inserting a plasma applicator into a sinus cavity defined in a bone mass, positioning the plasma applicator adjacent a tissue formation, generating a selectively reactive plasma effluent at the plasma applicator and directing the selectively reactive plasma effluent at the tissue formation. The selective nature of the reactive plasma enables treatment of specific targets inside the sinus while minimizing the effect on other tissues. Such treatment includes, but not limited to, sterilization of bacterial colonies, vaporization of unwanted tissues or foreign masses, stimulation of tissues by enriching the content of reactive oxygen and nitrous oxide pathways, and combinations thereof.