Resorbable Polymer Membrane for Implant Adhesion Prevention
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Solution Overview
Problem
Existing medical devices and implants face issues with post-surgical adhesions, foreign body reactions, and substance leakage or migration, with current bioresorbable barrier materials either resorbing too quickly or too slowly, leading to inflammation and increased manufacturing complexity.
Innovation Solution
Anti-adhesion membranes made from resorbable polymers, such as lactide copolymers, are applied to implants before surgery to prevent tissue adhesions and foreign body reactions, using methods like wrapping or spray-coating, and are engineered to resorb slowly, reducing adverse effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bioresorbable barrier materials are used to prevent adhesions, then adhesion prevention is improved, but the materials may resorb too quickly causing drops in local pH levels and inflammation
Solution Approach 1:
The patent changes the chemical composition parameters of the barrier material by incorporating basic substances (such as calcium carbonate, magnesium oxide, or sodium bicarbonate) into the bioresorbable polymer matrix. This compositional modification allows the material to neutralize acidic byproducts during resorption, maintaining local pH levels and preventing inflammation while the material performs its adhesion prevention function.
Solution Approach 2:
The patent creates composite barrier materials by combining bioresorbable polymers with basic substances. This composite structure allows the material to simultaneously provide adhesion prevention through the polymer matrix while the embedded basic substances neutralize acidic resorption byproducts, resolving the contradiction between effective barrier function and avoidance of pH-related inflammation.
2Reliability
If barrier materials are used to prevent adhesions, then adhesion prevention is improved, but manufacturing complexity and cost increase due to complex chemical formulations
Solution Approach 1:
The patent simplifies manufacturing by changing the formulation approach from complex multi-component chemical systems to a simpler composite of bioresorbable polymer and basic substances. This parameter change in material composition reduces the number of synthesis steps and quality control requirements, thereby decreasing manufacturing complexity and cost while maintaining effective adhesion prevention.
3Reliability
If barrier materials are used to prevent adhesions, then adhesion prevention is improved, but the materials may take too long to resorb or be insufficiently malleable
Solution Approach 1:
The patent controls the resorption duration by selecting specific bioresorbable polymers with known degradation rates and adjusting the composition ratios of polymer to basic substances. This parameter control allows optimization of the barrier material to provide adequate protection during the critical healing period while ensuring complete resorption within an appropriate timeframe, preventing both premature failure and excessive duration.
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 membranes effectively reduce post-surgical adhesions and inflammation, providing a protective barrier for implants while resorbing within 24 months, thus minimizing side effects and simplifying manufacturing processes.
Implementation Method 1
engineered to resorb slowly, reducing adverse effects
Data Source
AI summary
An anti-adhesion membrane is placed onto an implant introduced into a surgical site of a patient to prevent post-surgical adhesions between the implant and surrounding tissue. The implant may comprise either biological material, whcu as a transplanted organ, or non-biological material such as a medical device. The membrane may be applied in a variety of ways. In one example, a membrane according to the present invention is shrink-wrapped around a pace-maker. In another example, a breast implant is spray-coated or dipped with the membrane material.