Sinus Ablation Guard Members for Bone Protection

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Solution Overview

Problem

Current endoscopic sinus surgery techniques are inadequate for treating persistent mucosal disease in sinuses, as they can lead to bone exposure and increased risk of infection, and do not effectively address chronic sinusitis, especially in the maxillary sinus, due to the lack of minimally invasive methods that protect surrounding bone and adjacent structures.

Innovation Solution

The development of minimally invasive sinus mucosal restorative techniques using guard members to maintain a safe distance between ablation electrodes and sinus bone, allowing for the removal of diseased mucosal tissue while preserving healthy tissue and facilitating healing, along with the use of expandable guard members and ablation electrodes to ensure precise tissue ablation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If endoscopic sinus surgery is performed to clear sinuses of chronic infection and inflammation, then sinus ventilation is restored and function is improved, but bone exposure occurs and risk of infection increases

Engineering Contradiction:

Improvesinus ventilation restorationVSAvoidbone exposure and infection risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

A protective barrier device is introduced as an intermediary between the ablation electrode and the sinus bone. This barrier prevents direct contact between the electrode and bone during ablation procedures, eliminating bone exposure while still allowing effective ablation of diseased mucosal tissue. The barrier acts as a mediator that enables the surgical procedure to proceed without causing the harmful side effect of bone exposure.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If powered endoscopic instrumentation is used to remove persistent mucosal disease, then tissue removal is achieved, but bone removal and exposure occur complicating healing

Engineering Contradiction:

Improvetissue removal efficiencyVSAvoidbone removal and healing complications

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The protective barrier serves as an intermediary that selectively allows diseased tissue to be removed while preventing contact with healthy bone. The barrier can be positioned to expose only the areas requiring ablation while shielding the bone, enabling efficient tissue removal without the harmful consequence of bone removal or exposure that complicates healing.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The protective barrier enables localized ablation by allowing the surgeon to target specific areas of diseased mucosa while protecting surrounding healthy bone structures. This localizes the therapeutic effect to where it is needed while preventing harmful effects in adjacent areas, achieving productive tissue removal without bone damage.

Inventive Principle:

Principle #3Local quality

3Reliability

If conventional endoscopic instruments are used to enlarge maxillary ostium, then ventilation is improved, but adjacent structures such as eye and brain are at higher risk for damage

Engineering Contradiction:

Improvesinus ventilationVSAvoiddamage to adjacent structures

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The protective barrier acts as an intermediary safety layer between surgical instruments and adjacent critical structures. When enlarging the maxillary ostium or performing ablation near the sinus walls, the barrier prevents inadvertent contact with the eye, brain, and other nearby structures, reducing the risk of damage while still allowing effective ventilation improvement.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 approach effectively removes persistent mucosal disease while minimizing the risk of bone damage and infection, improving sinus ventilation and function without compromising adjacent structures, thus providing a safer and more effective treatment for chronic sinusitis.

Implementation Method 1

ablation electrodes to ensure precise tissue ablation

Methodology Applied

Scientific EffectThermal ablation: Ablation

Implementation Method 2

ablation electrodes

Methodology Applied

Scientific EffectJoule heating: Joule Heating

Data Source

PatentUS8900227B2Sinus ablation devices, methods, and systems

Publication Date: 2014.12.02 STIERMAN KAREN

AI summary

An embodiment of the invention concerns systems, devices, and methods for minimally invasive sinus mucosal restorative techniques. Such an embodiment may remove persistent mucosal disease while protecting bony structures of sinus cavities from damage. For example, guard members may keep ablation electrodes a set distance away from sinus bone. This may preserve healthy tissue over the bone to thereby facilitate healing while ablating the disease tissue.