Self-Assembling Peptide Barrier for Adhesion Prevention
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Solution Overview
Problem
Current materials for preventing adhesions during and after surgery are ineffective due to rapid degradation and inability to form a sufficient barrier in fluid environments, particularly during bleeding and bodily fluid leakage.
Innovation Solution
Formulations of self-assembling materials, such as peptides and peptidomimetics, that can be applied as hydrogels, sprays, or powders to tissues to prevent adhesions by forming a stable barrier, which can include therapeutic agents and are designed to self-assemble under physiological conditions, allowing for tissue repair and minimizing fluid movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hydrogels are applied as solutions at the time of surgery, then adhesion prevention is attempted, but the materials degrade rapidly and fail to form a sufficiently thick barrier
Solution Approach 1:
The composition is applied to the tissue surface before the surgical procedure begins, allowing the barrier to form in advance. This preliminary application ensures the material is in place before bleeding and fluid leakage occur, enabling it to form a stable barrier that prevents adhesion formation while withstanding the surgical environment.
Solution Approach 2:
The composition combines multiple components including self-assembling peptides or peptidomimetics, thickening agents, and therapeutic agents in a controlled-release formulation. This composite structure provides both immediate barrier formation and sustained protection, resolving the contradiction between rapid degradation and insufficient barrier thickness by creating a multi-functional material system.
2Reliability
If materials are applied to prevent adhesions, then barrier formation is attempted, but the materials fail in highly fluid environments with bleeding and leakage
Solution Approach 1:
The composition undergoes parameter changes upon application, transitioning from a liquid or semi-liquid state to a gel or solid barrier through self-assembly of peptides and thickening agent activation. This parameter change allows the material to resist fluid penetration and maintain barrier integrity in highly fluid environments with bleeding and leakage, while remaining applicable as a solution during surgery.
Solution Approach 2:
The self-assembling peptides and thickening agents act as intermediaries between the applied solution and the tissue surface, forming a stable barrier layer that mediates the interaction between the composition and the fluid environment. This intermediary layer protects the underlying tissue from harmful fluids while allowing controlled release of therapeutic agents.
3Quantity of substance
If standard epidural steroid injections are used, then pain management is attempted, but adhesions in the epidural space prevent medication delivery to the target area
Solution Approach 1:
The composition specifically targets and addresses the adhesion barrier in the epidural space by applying the barrier-forming material directly to the affected area. This extraction approach removes the adhesion blockage problem by creating a controlled barrier that facilitates rather than prevents medication delivery, allowing the therapeutic agents to reach the target area effectively.
Solution Approach 2:
The composition serves multiple functions simultaneously: it forms a stable barrier to prevent adhesion formation, enables controlled release of therapeutic agents, and facilitates medication delivery through the epidural space. This multi-functionality resolves the contradiction by making the barrier material itself a delivery vehicle rather than an obstruction.
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 self-assembling materials effectively prevent adhesions and promote tissue repair by forming a stable barrier that remains effective in fluid environments, reducing the risk of complications such as bowel obstruction and improving the delivery of medications in interventional pain management.
Implementation Method 1
Compositions including materials which self-assemble under physiological conditions are formulated for application to tissues for prevention of adhesions
Implementation Method 2
Formulations of self-assembling materials, such as peptides and peptidomimetics, that can be applied as hydrogels, sprays, or powders to tissues to prevent adhesions by forming a stable barrier
Data Source
AI summary
A method has been developed of preventing or limiting formation of adhesions by administering to a site in need thereof, in the absence of or after bleeding or leakage of fluid has been substantially stopped, a self-assembling material which forms a barrier to formation of adhesions. In certain embodiments, the self assembling materials are peptidomimetics, nucleotidomimetics, di- and triblock copolymers, N-alkylacrylamides, or dendimers. These materials are also useful in a method for regeneration or repair of tissue or cells forming tissue.