Bioabsorbable Reduced-Pressure Manifold With Differential Absorption
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Solution Overview
Problem
Current reduced-pressure treatment systems for tissue sites face challenges in effectively delivering and maintaining reduced pressure while ensuring tissue integration and healing, as existing materials do not adequately address the need for controlled bio-absorption and mechanical support during and after treatment.
Innovation Solution
A reduced-pressure manifold system utilizing a barrier member formed from two bioabsorbable materials with different absorption rates, where the first material provides mechanical strength and the second material facilitates rapid absorption, allowing for controlled delivery of reduced pressure and subsequent tissue integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a single bioabsorbable material is used in the reduced-pressure manifold, then the device structure is simple, but it cannot provide both mechanical strength and rapid absorption post-treatment
Solution Approach 1:
The reduced-pressure manifold is constructed from multiple bioabsorbable materials with different absorption rates. The first material provides mechanical strength and structural integrity during treatment, while the second material absorbs more rapidly to facilitate post-treatment tissue integration. This composite approach resolves the contradiction by combining materials with complementary properties rather than relying on a single material to fulfill both requirements simultaneously.
Solution Approach 2:
The manifold is segmented into different material zones or layers, each with specific absorption characteristics. The first material forms the structural framework requiring slower absorption for sustained mechanical support, while the second material is positioned in areas requiring rapid absorption to clear the device quickly after treatment completion. This segmentation allows simultaneous optimization of both strength and absorption time.
2Productivity
If materials with rapid absorption are used, then post-treatment tissue integration is accelerated, but mechanical support during treatment is insufficient
Solution Approach 1:
By combining a slowly-absorbing material (providing mechanical support) with a rapidly-absorbing material (accelerating tissue integration), the composite structure ensures that mechanical integrity is maintained throughout treatment while post-treatment healing is accelerated. The rapid-absorbing material does not compromise structural support because it is complemented by the slowly-absorbing structural material.
Solution Approach 2:
Different regions of the manifold are assigned different material properties: areas requiring sustained mechanical support use slowly-absorbing material, while areas benefiting from rapid clearance use quickly-absorbing material. This local differentiation of material quality optimizes both healing acceleration and mechanical support in their respective zones.
3Reliability
If the manifold remains in place for extended periods to maintain mechanical support, then tissue integration is improved, but the treatment duration is prolonged
Solution Approach 1:
The differential absorption rates of the two materials create a staged degradation profile: the rapidly-absorbing material clears first to signal treatment completion and allow tissue integration, while the slowly-absorbing material maintains structural support throughout the entire treatment period. This resolves the contradiction by decoupling the timing of structural support termination from tissue integration completion.
Solution Approach 2:
The rapidly-absorbing material is designed to clear preliminarily before the slowly-absorbing material, creating a staged removal sequence. This preliminary action of rapid material absorption signals that the active treatment phase is complete while the structural material continues to provide support during the integration phase, optimizing both tissue integration and treatment 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 system effectively accelerates tissue healing by maintaining reduced pressure and promoting tissue integration by using materials with distinct absorption rates to ensure mechanical support during treatment and rapid absorption post-treatment, enhancing healing outcomes.
Implementation Method 1
The first material has a first bio-absorption term (BA1). The second material has a second bio-absorption term (BA2). The first bio-absorption term is different than the second bio-absorption term (BA1≠BA2). The first bio-absorption term may be greater than the second bio-absorption term.
Data Source
AI summary
A reduced-pressure treatment system includes an isolation device for isolating a tissue site from surrounding tissue for reduced-pressure treatment that is formed from a first material having a first bio-absorption term and at least a second material having a second and different bio-absorption term. The different materials allow the isolation device initially to function well for reduced-pressure treatment and then to experience degradation at a quicker pace which facilitates healing. In addition, a reduced-pressure manifold for treating a tissue site is presented that includes a flexible barrier member formed from a first material, which has a first bio-absorption term and formed with a first plurality of apertures; a second material, which has a second bio-absorption term, disposed within the plurality of apertures; wherein the first bio-absorption term is greater than the second bio-absorption term; and a reduced-pressure delivery member coupled to the barrier member for delivering reduced pressure to the second surface of the barrier member during reduced-pressure treatment.