Bioactive Releasing Membrane for Implantable Sensor
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current implantable glucose monitoring devices face challenges in providing reliable data due to local tissue responses, leading to reduced sensor life and accuracy over time.
Innovation Solution
A bioactive releasing membrane is integrated with the device, containing releasable bioactive agents like dexamethasone, which modifies tissue responses, reducing immune reactions and extending sensor life by attenuating foreign body responses and maintaining signal accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If implantable glucose monitoring devices are used, then glucose levels can be detected, but local tissue responses reduce sensor life and accuracy
Solution Approach 1:
A bioactive releasing membrane is introduced as an intermediary layer between the sensor and the surrounding tissue. This membrane contains and releases bioactive agents that modify the tissue response, preventing direct harmful interaction between the sensor and the immune system, thereby extending sensor life while maintaining accuracy
Solution Approach 2:
The membrane modifies the local tissue environment by releasing bioactive agents that change the physiological parameters of the surrounding tissue, reducing immune reactivity and foreign body response, which allows the sensor to function reliably for extended periods
2Reliability
If bioactive agents are released to modify tissue response, then immune reactions are reduced, but device complexity increases
Solution Approach 1:
The bioactive releasing membrane is implemented as a thin film structure that encapsulates the bioactive agents. This thin film approach provides the necessary functionality for controlled release while minimizing the added complexity and volume of the device
Solution Approach 2:
The membrane serves multiple functions simultaneously: it acts as a barrier between the sensor and tissue, provides controlled release of bioactive agents, and modifies the local tissue environment. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity
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 bioactive releasing membrane effectively delays immune responses, maintaining glucose signal noise below 4 mg/dL for extended periods, thereby enhancing the longevity and reliability of glucose monitoring devices.
Implementation Method 1
a bioactive releasing membrane adjacent the sensor substrate, the bioactive releasing membrane comprising at least one releasable bioactive agent capable of modifying a tissue response of a subject
Data Source
AI summary
The present disclosure relates generally to bioactive releasing membranes utilized with implantable devices, such as devices for the detection of analyte concentrations in a biological sample. More particularly, the disclosure relates to novel bioactive releasing membranes, to devices and implantable devices including these membranes, methods for forming the bioactive releasing membranes on or around the implantable devices, and to methods for monitoring analyte levels in a biological fluid sample using an implantable analyte detection device.