Adaptive Hinged Articulating Spacer Systems for Revision Knee Arthroplasty in Specialized Environments

Publication ID: 24-11857424_0004_PTD
Published: October 28, 2025
Category:Specialized Variations & Niche Solutions

Legal Citation

pr1or.art Inc., “Adaptive Hinged Articulating Spacer Systems for Revision Knee Arthroplasty in Specialized Environments,” Published Technical Disclosure No. 24-11857424_0004_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857424_0004_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. 11,857,424.

Summary of the Inventive Concept

The present disclosure relates to a family of hinged articulating spacer systems for revision knee arthroplasty tailored to specific operational environments, including high-altitude, disaster relief, high-security, limited medical resources, and extreme cold settings.

Background and Problem Solved

The original patent for hinged articulating spacer systems for revision knee arthroplasty has limitations in addressing the unique challenges of specific operational environments. The present inventive concept adapts the original system to meet the demands of these environments, ensuring effective revision knee arthroplasty in diverse settings.

Detailed Description of the Inventive Concept

The new claims encompass four distinct embodiments of hinged articulating spacer systems for revision knee arthroplasty, each tailored to a specific environment. The high-altitude embodiment incorporates materials and design features to withstand extreme weather conditions. The disaster relief embodiment prioritizes ease of use and rapid deployment. The high-security embodiment integrates tamper-evident features to prevent unauthorized access. The limited medical resources embodiment streamlines the system for minimal maintenance and ease of use. The extreme cold embodiment incorporates specialized materials to withstand temperatures below -20°C. Each embodiment builds upon the original patent's hinged articulating spacer system, incorporating novel components and adaptations to address the unique challenges of its target environment.

Novelty and Inventive Step

The new claims introduce novel adaptations to the original hinged articulating spacer system, providing specialized solutions for specific operational environments. The inventive step lies in the deliberate design choices made to address the unique challenges of each environment, resulting in a family of systems that expand the applicability of the original patent.

Alternative Embodiments and Variations

Alternative embodiments could include further adaptations for other specialized environments, such as tropical or desert settings. Variations could involve the use of different materials, alternative hinge designs, or modified articulating component assemblies.

Potential Commercial Applications and Market

The adaptive hinged articulating spacer systems have significant commercial potential in the medical device industry, particularly in markets serving high-altitude, disaster relief, high-security, limited medical resources, and extreme cold environments. Target industries may include orthopedic manufacturers, medical device suppliers, and healthcare providers operating in these specialized environments.

CPC Classifications

SectionClassGroup
A A61 A61F2/3845
A A61 A61F2/30724
A A61 A61F2/389
A A61 A61F2/3859
A A61 A61F2002/305
A A61 A61F2002/30677
A A61 A61F2310/00011

Field of Art

Orthopedic surgical devices, specifically knee revision arthroplasty systems, involving biomechanical implant design for joint reconstruction with expertise in materials engineering, surgical techniques, and mechanical adaptability

Person of Ordinary Skill (PHOSITA) Profile

A biomedical engineer or orthopedic surgical device designer with advanced degree, working knowledge of joint prosthesis design, understanding of material science, and experience in adapting medical devices to specialized environmental conditions

Obviousness Rationale

A PHOSITA would recognize that the source patent's fundamental hinged articulating spacer system provides a modular framework that can be systematically adapted to different operational environments by applying known materials science and engineering design principles. The variations disclosed in the PTD represent predictable extensions of the original patent's core mechanical concept, utilizing standard design modification techniques to address specific environmental challenges. These adaptations involve routine engineering problem-solving within the established technological framework of revision knee arthroplasty systems.

Obvious Combinations & Variations

Source Patent Element
Hinged rod assembly with femur and tibia rods connected via hinge pin
PTD Variation
Specialized material selection for high-altitude and extreme cold environments
Obviousness Reasoning
Material selection for temperature resistance is a known engineering design choice, with predictable methods for modifying mechanical properties to suit specific environmental conditions
Source Patent Element
Articulating spacer system with modular rod configuration
PTD Variation
Tamper-evident features for high-security medical environments
Obviousness Reasoning
Adding security mechanisms to medical devices is a standard design approach, representing a finite set of known techniques for preventing unauthorized access
Source Patent Element
Basic hinged rod assembly with snap-fit connection
PTD Variation
Simplified design for limited medical resource environments
Obviousness Reasoning
Reducing component complexity and maintenance requirements is a predictable engineering optimization strategy with well-understood design principles
Source Patent Element
Knee joint revision system with range of motion capabilities
PTD Variation
Disaster relief deployment methodology emphasizing rapid implantation
Obviousness Reasoning
Adapting medical device protocols for emergency scenarios represents a standard engineering approach to expanding device utility across different operational contexts
35 U.S.C. § 103 Summary: Based on US Patent 11857424's fundamental disclosure of a hinged articulating spacer system, the present publication demonstrates that a person having ordinary skill in the art would find the disclosed environmental variations obvious through routine engineering design choices, thereby establishing prior art that would render obvious subsequent claims attempting to protect substantially similar technical implementations.

Original Patent Information

Patent NumberUS 11,857,424
TitleHinged articulating spacer system for revision knee arthroplasty