Next-Generation Hydrocortisone Sodium Phosphate Formulations and Delivery Systems
Legal Citation
Summary of the Inventive Concept
This inventive concept envisions a next-generation platform for hydrocortisone sodium phosphate formulations and delivery systems, offering improved efficacy, convenience, and patient compliance. It encompasses novel transdermal, topical, oral, and inhalation formulations, as well as innovative manufacturing processes, to address the limitations of current treatments.
Background and Problem Solved
The original patent disclosed an aqueous pharmaceutical formulation of hydrocortisone sodium phosphate and monothioglycerol. However, these formulations have limitations in terms of bioavailability, skin penetration, and patient convenience. The new inventive concept addresses these limitations by introducing novel formulations, delivery systems, and manufacturing processes that provide enhanced therapeutic outcomes and improved patient experience.
Detailed Description of the Inventive Concept
The new inventive concept comprises four main aspects: (1) a transdermal delivery system featuring a wearable patch with a hydrogel matrix containing monothioglycerol, (2) a topical formulation encapsulated in nanoparticles for enhanced skin penetration, (3) an oral formulation utilizing a hydrocortisone sodium phosphate prodrug and a monothioglycerol derivative to improve bioavailability, and (4) an inhalation device employing a liposomal carrier to deliver hydrocortisone sodium phosphate and monothioglycerol. Additionally, a novel manufacturing process involving lyophilization and reconstitution with a buffer solution enables the production of stable liquid formulations.
Novelty and Inventive Step
The new claims introduce novel formulations, delivery systems, and manufacturing processes that are not obvious from the original patent. The use of wearable patches, nanoparticles, prodrugs, and liposomal carriers, as well as the innovative manufacturing process, provide a significant departure from the prior art and demonstrate a non-obvious inventive step.
Alternative Embodiments and Variations
Alternative embodiments of the inventive concept could include variations in the hydrogel matrix composition, nanoparticle design, prodrug structure, and liposomal carrier formulation. Additionally, the manufacturing process could be adapted to accommodate different buffer solutions or lyophilization conditions.
Potential Commercial Applications and Market
The next-generation hydrocortisone sodium phosphate formulations and delivery systems have significant commercial potential in the pharmaceutical industry, particularly in the treatment of inflammatory skin conditions, allergic reactions, and other indications where hydrocortisone is currently used. The target market includes pharmaceutical companies, dermatology and allergy clinics, and patients seeking more effective and convenient treatments.
Section 103 Obviousness Analysis (PHOSITA)
Field of Art
Pharmaceutical formulations, specifically aqueous injectable and topical corticosteroid preparations with stabilizing agents, requiring advanced knowledge of pharmaceutical chemistry, drug delivery systems, and formulation techniques
Person of Ordinary Skill (PHOSITA) Profile
A pharmaceutical scientist or formulation engineer with advanced degree (PhD/MS) in pharmaceutical sciences, expertise in drug delivery systems, knowledge of corticosteroid chemistry, and experience in developing injectable and topical pharmaceutical compositions
Obviousness Rationale
A PHOSITA would recognize that the PTD's variations represent predictable extensions of the source patent's core hydrocortisone sodium phosphate and monothioglycerol formulation. The disclosed delivery systems and manufacturing processes leverage known pharmaceutical engineering techniques to improve drug administration and stability. The novel approaches represent incremental innovations using standard pharmaceutical design strategies that would be obvious to a skilled practitioner seeking to optimize drug delivery and patient compliance.
Obvious Combinations & Variations
Original Patent Information
| Patent Number | US 11,857,555 |
|---|---|
| Title | Aqueous pharmaceutical formulation of hydrocortisone sodium phosphate and monothioglycerol |
| Assignee(s) | Antares Pharma, Inc. |