Adaptive Knee Resection and Gap Balancing Instruments for Specialized Environments

Publication ID: 24-11857202_0004_PTD
Published: November 07, 2025
Category:Specialized Variations & Niche Solutions

Legal Citation

pr1or.art Inc., “Adaptive Knee Resection and Gap Balancing Instruments for Specialized Environments,” Published Technical Disclosure No. 24-11857202_0004_PTD, Published November 07, 2025, available at https://archive.pr1or.art/24-11857202_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. 11,857,202.

Summary of the Inventive Concept

The inventive concept adapts knee resection and gap balancing instruments for kinematic alignment to address specific challenges in high-altitude, disaster relief, high-security, extreme cold, and remote resource-constrained settings.

Background and Problem Solved

The original patent provides a comprehensive solution for knee resection and gap balancing instruments for kinematic alignment. However, these instruments may not be suitable for specific, niche environments where additional features and adaptations are necessary. The inventive concept addresses these limitations by developing specialized instruments that cater to these unique operational environments.

Detailed Description of the Inventive Concept

The inventive concept comprises a family of knee resection and gap balancing instrument systems, each designed for a specific environment. For high-altitude environments, the system incorporates a barometric sensor to adjust resection plane alignment based on atmospheric pressure. For disaster relief settings, the system is portable, waterproof, and includes a solar-powered battery and waterproof storage case. For high-security environments, the system features encryption-enabled data transmission and biometric authentication. For extreme cold environments, the system has a thermally insulated housing and a heating element to maintain optimal operating temperatures. For remote, resource-constrained settings, the system has a modular, field-replaceable design and a user-friendly interface for minimally trained personnel.

Novelty and Inventive Step

The inventive concept's novelty lies in its adaptation of knee resection and gap balancing instruments for kinematic alignment to specific, niche environments. The inventive step is the integration of specialized features and adaptations that address the unique challenges of each environment, thereby providing a tailored solution for each setting.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept could include additional features such as GPS tracking, real-time data transmission, or integrated imaging capabilities. Variations could include different materials, sizes, or configurations to accommodate diverse user needs and preferences.

Potential Commercial Applications and Market

The inventive concept has significant commercial potential in the orthopedic and medical device industries, particularly in niche markets such as disaster relief, high-security, and extreme environment applications. The target industries include orthopedic device manufacturers, medical device companies, and healthcare providers operating in these specialized environments.

CPC Classifications

SectionClassGroup
A A61 A61B17/155
A A61 A61B17/157
A A61 A61B17/1675
A A61 A61B17/1764
A A61 A61B17/90
A A61 A61B2017/564
A A61 A61B2090/061

Field of Art

Orthopedic surgical instrumentation, specifically knee arthroplasty positioning and resection systems, requiring advanced mechanical engineering, biomechanical knowledge, and medical device design expertise

Person of Ordinary Skill (PHOSITA) Profile

A biomedical engineer or orthopedic surgical instrument designer with advanced degree, 5-10 years experience in medical device development, familiar with surgical positioning technologies, mechanical adaptations, and environmental engineering constraints

Obviousness Rationale

A PHOSITA would recognize that the source patent's fundamental knee resection positioning system provides a modular framework readily adaptable to specialized environmental conditions. The core mechanical coupling and alignment principles remain consistent across the PTD's variations, with environmental sensors and protective features representing predictable engineering modifications. The systematic approach of tailoring surgical instrumentation to specific operational contexts represents a logical extension of existing medical device design methodologies.

Obvious Combinations & Variations

Source Patent Element
Tibial and femoral coupling blocks with laterally spaced coupler pins for precise alignment
PTD Variation
Adding barometric pressure sensors to adjust resection plane alignment at high altitudes
Obviousness Reasoning
Integrating environmental compensation sensors is a known technique in precision medical instrumentation, representing a predictable design optimization for variable operational conditions
Source Patent Element
Modular instrument design with interchangeable components
PTD Variation
Creating field-replaceable modules for resource-constrained environments
Obviousness Reasoning
Designing medical devices with increased modularity and adaptability is a standard engineering approach to expanding instrument utility across diverse operational contexts
Source Patent Element
Coupling pins and extension mechanisms for precise positioning
PTD Variation
Adding thermal insulation and heating elements for extreme cold environments
Obviousness Reasoning
Protecting precision mechanical systems through environmental shielding represents a standard engineering solution for maintaining instrument performance under challenging conditions
Source Patent Element
Instrument positioning system with mechanical coupling mechanisms
PTD Variation
Incorporating biometric authentication and encrypted data transmission for high-security environments
Obviousness Reasoning
Adding digital security features to medical instrumentation is a predictable technological evolution, representing a finite set of known protective strategies
35 U.S.C. § 103 Summary: Based on US Patent 11857202's comprehensive knee resection positioning system, the present publication demonstrates that a Person Having Ordinary Skill In The Art would find the disclosed environmental adaptations obvious and predictable extensions of existing surgical instrument design principles, thereby rendering potential claims to such variations unpatentable under standard obviousness analysis.

Original Patent Information

Patent NumberUS 11,857,202
TitleKnee resection and gap balancing instruments and techniques for kinematic alignment
Assignee(s)Zimmer, Inc.