Iodinated Polyether Compounds for Biodegradable Medical Imaging
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Solution Overview
Problem
Current biodegradable radio-opaque polymers used in medical imaging and minimally invasive surgery lack visibility under medical imaging scanners and are associated with adverse effects due to hyper-osmolarity and instability, while existing solutions are expensive and have high rates of adverse events.
Innovation Solution
Development of oligomeric, hydrolytically stable, non-ionic, water-soluble radio-opaque compounds with iodine-rich domains that self-assemble in water, allowing for improved visibility in medical imaging and controlled drug delivery, using polyether-based compounds with iodinated xanthene moieties and cross-linkable proteins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional biodegradable radio-opaque polymers are used, then visibility in medical imaging is improved, but adverse effects occur due to hyper-osmolarity and instability
Solution Approach 1:
The patent changes the chemical parameters of the polymer by incorporating hydrolyzable bonds and specific functional groups that enable controlled degradation. This allows the polymer to maintain radio-opacity during the required time period while subsequently degrading into non-toxic products, eliminating hyper-osmolarity and instability issues associated with conventional polymers.
Solution Approach 2:
The patent creates a composite material system combining biodegradable polymer chains with radio-opaque iodinated moieties. This composite structure provides both the visibility needed for medical imaging and the biodegradability required for safe elimination, resolving the contradiction between visibility and safety.
2Illumination intensity
If existing radio-opaque solutions are used, then imaging quality is improved, but cost increases and adverse event rates increase
Solution Approach 1:
The patent employs a disposable, biodegradable polymer system that performs its function and then degrades harmlessly. This eliminates the need for expensive long-term management or removal procedures, reducing both cost and adverse events associated with permanent implants or repeated interventions.
Solution Approach 2:
By changing the temporal parameters of the polymer's presence in the body through controlled hydrolysis, the patent achieves imaging quality when needed while avoiding long-term complications and costs associated with persistent foreign materials.
3Duration of action of moving object
If biodegradable polymers are used for drug delivery, then controlled release is achieved, but visibility under medical imaging scanners is insufficient
Solution Approach 1:
The patent develops a composite material where radio-opaque iodinated moieties are integrated into the biodegradable polymer matrix. This allows the polymer to provide both controlled drug release through hydrolysis and sufficient visibility for real-time monitoring during the entire duration of action.
Solution Approach 2:
The patent applies local quality by concentrating radio-opaque iodine at specific sites within the polymer structure where it is needed for imaging, while maintaining the overall biodegradable properties for controlled release. This localized enhancement of radio-opacity ensures visibility without compromising the drug delivery function.
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 new compounds provide enhanced visibility in medical imaging and safe, controlled drug delivery with reduced adverse effects, as they are biodegradable, non-toxic, and maintain stability in aqueous environments, addressing the limitations of existing radio-opaque polymers.
Implementation Method 1
oligomeric, hydrolytically stable, non-ionic, water-soluble radio-opaque compounds with iodine-rich domains that self-assemble in water
Implementation Method 2
attenuation of soft tissue by x-ray radiation can be improved by exogenously administering a radio-opaque compound, which gets distributed in the tissue to be imaged. The infused compound preferentially absorbs x-ray radiation in the tissue
Implementation Method 3
Biodegradable is meant to denote a material that will degrade in a biological environment by either a biologically assisted mechanism, such as an enzyme catalyzed reaction or by a chemical mechanism which can occur in a biological medium, such as hydrolysis
Data Source
AI summary
Radio-opaque biodegradable compositions are formed by modifying terminal groups of synthetic and natural biodegradable polymers such as polylactones with iodinated moieties. The biodegradable property of the compositions renders them suitable for use in medical field such as drug delivery, imaging. Compounds disclosed in this invention exist as neat liquid. Certain compositions disclosed in this invention form hydrophobic iodine rich domains when dissolved in water, such domains provide better contrasting properties as well as ability to dissolve hydrophobic bioactive drugs. Certain iodinated moieties disclosed in the invention are capable of cross linking natural proteins in situ in presence of suitable catalysts and co-catalysts.