Stem Cell Delivery via Simple Carriers for Wound Healing
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Solution Overview
Problem
Current wound healing treatments are limited in effectively promoting tissue regeneration and are prone to complications such as infection and scarring, particularly for chronic wounds, due to the lack of functional skin substitutes and efficient cell delivery methods.
Innovation Solution
The method involves administering stem cells topically or intradermally using a pharmaceutically acceptable carrier, without attachment to a functionalized substrate, to promote wound healing by accelerating re-epithelialization, angiogenesis, and tissue remodeling, using carriers like gels, sponges, or membranes to enhance cell delivery and retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If stem cells are delivered using a functionalized substrate, then cell delivery and retention are improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent extracts the essential function of cell delivery from the complex functionalized substrate system. By using simple pharmaceutically acceptable carriers without requiring functionalization, the invention removes the unnecessary complexity while maintaining effective cell delivery and retention at the wound site.
Solution Approach 2:
The invention applies local quality by using simple carriers that provide the necessary cell delivery function specifically at the wound site without requiring complex functionalization elsewhere. The carrier materials are selected for their biocompatibility and ability to retain cells locally where needed.
2Reliability
If complex functionalized substrates are used for cell delivery, then cell retention is improved, but ease of manufacture deteriorates
Solution Approach 1:
The invention extracts the critical cell retention function from the complex manufacturing process of functionalized substrates. By using simple pharmaceutically acceptable carriers that naturally retain cells through their physical properties rather than requiring complex surface functionalization, the manufacturing process becomes significantly easier while maintaining effective cell retention.
Solution Approach 2:
The invention changes the parameters of the delivery system from complex functionalized substrates to simple carriers with appropriate physical properties (viscosity, gelling temperature, etc.). This parameter change simplifies manufacturing while maintaining the essential cell retention function through the carrier's natural characteristics rather than artificial functionalization.
3Ease of operation
If simple carriers are used for stem cell delivery, then ease of operation is improved, but cell delivery efficiency may deteriorate
Solution Approach 1:
The invention optimizes the parameters of simple pharmaceutically acceptable carriers to ensure they provide adequate cell delivery efficiency. By carefully selecting carriers with appropriate viscosity, gelling temperature, and release characteristics, the invention maintains high cell delivery efficiency while preserving the ease of operation benefits of simple carriers.
Solution Approach 2:
The pharmaceutically acceptable carrier acts as an intermediary that facilitates efficient cell delivery despite its simplicity. The carrier mediates between the stem cells and the wound site, ensuring proper cell release and retention through its inherent properties rather than requiring complex functionalization, thus maintaining both ease of operation and delivery efficiency.
Data Source
AI summary
The present invention provides a method for treating wounds by applying cells as described in this application. In one aspect the method provides treatment for cutaneous wounds. In general embodiments the cells are delivered to the wound without being attached to a functionalized substrate in the delivery vehicle.