Protection and Delivery of Multiple Therapeutic Proteins for Specialized Wound Healing

Publication ID: 24-11857631_0009_PTD
Published: October 28, 2025
Category:Specialized Variations & Niche Solutions

Legal Citation

pr1or.art Inc., “Protection and Delivery of Multiple Therapeutic Proteins for Specialized Wound Healing,” Published Technical Disclosure No. 24-11857631_0009_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857631_0009_PTD
This technical disclosure describes improvements that would be readily apparent to a Person Having Ordinary Skill In The Art (PHOSITA) when considered in combination with the foundational architecture disclosed in U.S. Patent No. 11,857,631.

Summary of the Inventive Concept

An innovative system for delivering multiple therapeutic proteins to wounds in specific, challenging environments, enhancing wound healing outcomes in extreme cold, high-altitude, disaster relief, and compromised immune system scenarios.

Background and Problem Solved

The original patent disclosed a composition for delivering multiple therapeutic proteins for wound healing. However, this composition may not be suitable for use in extreme or specialized environments. The present inventive concept addresses this limitation by adapting the original composition for use in these specific scenarios, ensuring effective wound healing in challenging conditions.

Detailed Description of the Inventive Concept

The new inventive concept comprises a hydrogel and a complex or coacervate of a polycationic polymer, a polyanionic polymer, fibroblast growth factor 2 (FGF-2), and stromal cell-derived factor 1 alpha (SDF-1α) embedded in the hydrogel. The polycationic polymer is specifically designed to remain stable in extreme temperatures (below 0°C or above 37°C) or to be biodegradable within a certain timeframe (7-10 days). The polyanionic polymer is heparin or heparan sulfate. The system is designed for use in wound healing in extreme cold environments, high-altitude environments, disaster relief situations, and for treating chronic wounds in patients with diabetes or compromised immune systems.

Novelty and Inventive Step

The new claims introduce novel and non-obvious adaptations of the original composition for use in specialized environments, including the use of thermoresponsive polymers, biodegradable polymers, and specific polyanionic polymers. These adaptations provide a significant advantage in wound healing outcomes in these challenging scenarios.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept could include the use of different polycationic or polyanionic polymers, varying the concentration of the therapeutic proteins, or incorporating additional components to enhance wound healing. Variations could also include adapting the system for use in other specialized environments, such as high-humidity or high-radiation settings.

Potential Commercial Applications and Market

The inventive concept has significant commercial potential in the wound care market, particularly in niches such as extreme environment wound care, disaster relief, and chronic wound treatment. The system could be marketed to hospitals, clinics, and emergency response organizations, offering a unique solution for wound healing in challenging scenarios.

CPC Classifications

SectionClassGroup
A A61 A61K47/36
A A61 A61K9/0019
A A61 A61K9/06
A A61 A61K35/16
A A61 A61K35/19
A A61 A61K38/177
A A61 A61K38/18
A A61 A61K38/1825
A A61 A61K38/195
A A61 A61K47/34
A A61 A61K47/42
A A61 A61L15/225
A A61 A61L15/40
A A61 A61L15/44
A A61 A61L27/18
A A61 A61L27/20
A A61 A61L27/225
A A61 A61L27/26
A A61 A61L27/3616
A A61 A61L27/52
A A61 A61L27/54
A A61 A61L27/56
A A61 A61L31/041
A A61 A61L31/042
A A61 A61L31/046
A A61 A61L31/145
A A61 A61L31/16
A A61 A61P9/10
A A61 A61L2300/25
A A61 A61L2300/252
A A61 A61L2300/414
A A61 A61L2300/418
A A61 A61L2400/04
A A61 A61L2430/20

Field of Art

Biomedical engineering, specifically biomaterials and protein delivery systems for wound healing and tissue repair, with expertise in polymer chemistry, protein stabilization, and controlled drug delivery mechanisms

Person of Ordinary Skill (PHOSITA) Profile

A researcher or engineer with advanced degrees in biomedical engineering or related fields, possessing knowledge of polymer synthesis, protein interactions, hydrogel formulations, and wound healing technologies

Obviousness Rationale

A person of ordinary skill would recognize that the source patent's fundamental composition of hydrogel-embedded protein complexes provides a clear technological foundation for adapting the delivery system to specialized environmental conditions. The PTD's variations represent predictable extensions of the original patent's core technology, utilizing known polymer modification techniques to address specific wound healing challenges. The modifications demonstrate standard engineering problem-solving by applying known polymer design principles to enhance the original composition's utility in extreme environments.

Obvious Combinations & Variations

Source Patent Element
Polycationic polymer with polyester backbone and pendant arginine groups
PTD Variation
Thermoresponsive polymer modification to maintain stability at extreme temperatures
Obviousness Reasoning
A PHOSITA would recognize that polymer chemistry allows predictable modifications to enhance temperature stability, using well-established techniques of polymer chain engineering and functional group modifications
Source Patent Element
Complex of polycationic and polyanionic polymers with therapeutic proteins
PTD Variation
Adaptation for specific wound healing environments like high-altitude or disaster relief
Obviousness Reasoning
Modifying delivery systems for specific environmental conditions is a routine design choice in biomedical engineering, representing a predictable solution to extend the original technology's applicability
Source Patent Element
Hydrogel composition with multiple therapeutic proteins
PTD Variation
Adding antibiotic agents for treating chronic wounds in immunocompromised patients
Obviousness Reasoning
Combining therapeutic agents is a standard approach in wound healing, with a finite and predictable set of potential modifications to address specific medical conditions
Source Patent Element
Polycationic polymer with specific structural characteristics
PTD Variation
Biodegradable polymer design with controlled 7-10 day degradation profile
Obviousness Reasoning
Designing polymers with controlled degradation is a known technique in biomaterials, representing an obvious extension of existing polymer engineering principles
35 U.S.C. § 103 Summary: Based on US Patent 11857631, the present publication demonstrates that the claimed variations in wound healing composition and delivery systems would have been obvious to a person of ordinary skill in the art at the time of invention. The modifications represent predictable extensions of known polymer and protein delivery technologies, utilizing standard engineering approaches to adapt the original composition for specialized medical environments.

Original Patent Information

Patent NumberUS 11,857,631
TitleProtection and delivery of multiple therapeutic proteins
Assignee(s)UNIVERSITY OF PITTSBURGH—OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION