Biocompatible Adhesive Coating for Medical Device Tissue Fixation
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Solution Overview
Problem
Existing biocompatible adhesives and coatings for medical devices face challenges with adherence to both the device substrate and tissue, often resulting in delamination and inadequate tissue adhesion, which complicates the use of medical devices like hernia patches.
Innovation Solution
A biocompatible adhesive composition combining linear polyethylene glycol and multi-arm polyethylene glycol with a lactone component, applied as a coating on medical devices, providing enhanced adherence to tissue and allowing for temporary fixation and repositioning without additional fixation devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional adhesives and coatings are applied to medical devices, then the devices can be attached to tissue, but the coatings often delaminate from the substrate and fail to adhere properly to tissue
Solution Approach 1:
The patent employs a composite coating system consisting of multiple layers with distinct functions: a primer layer that chemically bonds to both the medical device substrate and the adhesive layer, and a top adhesive layer that provides tissue adhesion. This multi-layer composite structure resolves the delamination problem by ensuring strong interfacial bonding between each layer through optimized chemical compatibility and surface preparation protocols.
2Reliability
If strong adhesive coatings are applied to medical devices, then tissue adhesion is improved, but the ability to reposition the device before final placement is reduced
Solution Approach 1:
The adhesive coating is formulated with dynamic adhesion characteristics that evolve over time. Initially, the coating provides temporary, reversible adhesion that allows the medical device to be repositioned during the surgical procedure. As time progresses and physiological conditions change (such as moisture exposure and temperature stabilization), the adhesion strength increases to provide permanent fixation. This time-dependent adhesion behavior enables both repositioning capability and strong final attachment.
3Strength
If additional fixation devices are used to attach medical devices to tissue, then mechanical strength is improved, but the complexity of the procedure and additional invasive elements are introduced
Solution Approach 1:
The adhesive coating is designed to perform multiple functions that would traditionally require separate components: it provides both bonding to the medical device substrate and adhesion to tissue, acts as a protective barrier layer, and enables temporary fixation during positioning. This multi-functional adhesive system eliminates the need for additional fixation devices such as sutures, clips, or staples, thereby reducing procedural complexity and minimizing the number of foreign elements introduced into the patient's body.
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 adhesive composition ensures strong, temporary fixation of medical devices to tissue, enabling optimal placement and potential repositioning, while maintaining biocompatibility and mechanical properties necessary for medical applications.
Implementation Method 1
A biocompatible adhesive composition combining linear polyethylene glycol and multi-arm polyethylene glycol with a lactone component, applied as a coating on medical devices, providing enhanced adherence to tissue
Data Source
Figure 1~2
AI summary
The present disclosure relates to compositions suitable for use as medical devices and/or coatings thereon. In embodiments, the compositions may be used to adhere and/or seal tissue. In other embodiments, coatings may be used to at least temporarily affix a medical device to tissue. The coatings may affix a medical device to tissue without the need for additional fixation devices or, in embodiments, may be used with other fixation devices to affix a medical device to tissue.