Biodegradable Membrane for Pleural Adhesion
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Solution Overview
Problem
Current treatments for pleural abnormalities such as pneumothorax and pleural effusion, including surgical and chemical pleurodesis, often result in significant pain, infection risks, and high recurrence rates due to their invasive nature and side effects.
Innovation Solution
A biodegradable polymeric membrane made from FDA-approved materials like polycaprolactone, coated with fibronectin and/or hydrophilic polymers, is applied to pleural wounds to elicit fibronectin and promote fibrous adhesion, providing an air-tight seal without the need for additional surgeries or harsh chemicals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If surgical pleurodesis is performed to prevent pneumothorax recurrence, then adhesion between pleural surfaces is achieved, but patient experiences dramatic pain
Solution Approach 1:
The patent introduces a biodegradable polymeric membrane as an intermediary substance between the visceral and parietal pleura. This membrane promotes fibrous adhesion and prevents pneumothorax recurrence without requiring mechanical irritation of the pleural surfaces, thereby eliminating the dramatic pain associated with traditional surgical pleurodesis while maintaining the reliability of recurrence prevention
2Reliability
If chemical pleurodesis is used to treat pleural abnormalities, then adhesion is promoted, but infection risk increases
Solution Approach 1:
The biodegradable polymeric membrane serves as a physical intermediary that promotes adhesion through its material properties and fibronectin coating rather than through chemical irritation. This eliminates the need to introduce chemicals into the pleural cavity, thereby maintaining adhesion formation while significantly reducing infection risk
Solution Approach 2:
The polymeric membrane is designed to be biodegradable and temporary, serving its adhesion-promoting function during the critical healing period and then naturally degrading. This disposable approach avoids the need for permanent foreign bodies and reduces long-term infection risks associated with chemical agents
3Ease of operation
If invasive treatments are applied to treat pleural abnormalities, then immediate symptom relief is achieved, but recurrence rate increases
Solution Approach 1:
The patent applies the biodegradable polymeric membrane immediately during the initial treatment procedure to promote adhesion formation while the pleural surfaces are still apposed. This preliminary action ensures that fibrous adhesion develops during the critical early healing phase, providing both immediate symptom relief and effective recurrence prevention in a single intervention
4Reliability
If multiple procedures are performed to treat recurrent pleural abnormalities, then treatment effectiveness improves, but patient burden increases
Solution Approach 1:
The biodegradable polymeric membrane provides multiple functions in a single application: it promotes adhesion formation, prevents recurrence, reduces pain, and minimizes infection risk. This multi-functional approach consolidates what would traditionally require multiple separate procedures into a single treatment, thereby maintaining high effectiveness while significantly reducing patient burden and treatment time
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 membrane effectively reduces pain and infection risks by promoting strong, stable adhesion to prevent air or fluid leakage, eliminating the need for repeated procedures and minimizing side effects, while also allowing for the gradual release of medications like antibiotics and anticancer drugs.
Implementation Method 1
attaching a biodegradable polymeric membrane onto a pleural wound to elicit fibronectin from fibroblasts to cause fibrous adhesion
Implementation Method 2
coated with fibronectin and/or hydrophilic polymers
Data Source
AI summary
The invention relates to a method of treating pleural abnormalities in a subject in need thereof, comprising the steps of: (a) attaching a biodegradable polymeric membrane onto a pleural wound to elicit fibronectin from fibroblasts to cause fibrous adhesion; and (b) securing the membrane with securement products, including sutures, staples, and sealants. The present invention also relates to a biodegradable adhesion membrane used for treating pleural abnormalities, comprising: a biodegradable base material selected from the group consisting of polycaprolactone (PCL), polylactic acid or polylactide (PLA), polyhydroxybutyrate (PHB), poly(ethylene adipate), poly(butylene adipate) (PBA), chitosan, hyaluronic acid, and polyglycolic acid (PGA); wherein the thickness of the membrane is 0.1-1 mm.