Rupturable Membrane Array for Timed Tissue Access
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Solution Overview
Problem
Current methods for monitoring wound healing biomarkers and timed drug delivery lack biocompatibility and efficiency, requiring active user intervention and potentially aggravating wounds.
Innovation Solution
A device with an array of wells and rupturable membranes that uses mechanical vibrations to selectively access tissue for sensing or drug release, featuring membranes made from materials like graphene oxide and controlled by actuators to rupture at defined times, allowing for timed biosensing and drug delivery without direct contact with the tissue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing time-release technology (dissolvable tablets, thermal release, membrane melting) is used for sensing and drug delivery, then timed release function is achieved, but biocompatibility and efficiency are insufficient, and active user intervention is required which may aggravate wounds
Solution Approach 1:
The patent employs mechanical vibrations to rupture membranes at defined timepoints, enabling automated timed release of sensing agents and therapeutics. The actuator generates vibrations that selectively rupture membranes without requiring user intervention, thereby improving ease of operation while maintaining biocompatibility through non-invasive mechanical activation
Solution Approach 2:
The device performs self-service by automatically monitoring wound healing stages and delivering therapeutics at appropriate times without user intervention. The system autonomously determines when to rupture membranes based on pre-programmed timepoints and wound healing biomarker patterns, eliminating the need for active user monitoring and intervention
2Loss of time
If membranes are made ruptureable for timed access to tissue, then selective access at defined timepoints is achieved, but membrane debris may enter the bloodstream causing harmful effects
Solution Approach 1:
The patent uses thin film membranes that are designed to rupture at specific timepoints through mechanical vibration. These flexible thin films provide controlled access while minimizing debris generation compared to rigid structures. The thin film nature allows for clean rupture that reduces particulate contamination
Solution Approach 2:
The device incorporates porous membranes that can be configured to filter or trap potential debris while allowing fluid and biomarker passage. The porous structure provides a size-based filtration mechanism that prevents membrane fragments from entering the bloodstream while maintaining timed access functionality
3Measurement precision
If multiple biomarkers are monitored simultaneously for wound healing stages, then comprehensive wound assessment is achieved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The device divides the monitoring function into separate wells, each dedicated to detecting specific wound healing biomarkers. This segmentation allows for specialized sensor optimization in each well while simplifying the overall manufacturing process, as each well can be independently fabricated and then assembled into the complete device
Solution Approach 2:
The device employs a universal platform architecture with multiple wells that can detect various biomarkers using similar detection principles. This multi-functional design allows the same basic well structure and membrane rupture mechanism to serve multiple detection purposes, reducing manufacturing complexity while enabling comprehensive biomarker monitoring
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
Enables non-invasive, periodic monitoring of wound healing stages and controlled drug delivery, reducing user effort and minimizing wound aggravation, while preventing debris from entering the bloodstream.
Implementation Method 1
an actuator and electronics configured to control the actuator to supply a vibration through the substrate. The supplied vibration is configured to selectively rupture one of the plurality of membranes at a defined timepoint
Implementation Method 2
A membrane can comprise a sheet, e.g., a thin sheet, of liquid-proof material configured to resonate at a defined frequency when exposed to the vibration
Data Source
AI summary
Devices and methods for selectively accessing tissue for sensing or drug release are provided. A device includes an array of wells formed in a substrate supporting a plurality of membranes. Each membrane is disposed at a well opening of one of the wells of the array. The device further includes an actuator and electronics configured to control the actuator to supply a vibration through the substrate. The supplied vibration is configured to selectively rupture one of the plurality of membranes at a defined timepoint to selectively give access to tissue through a well opening.