AI-Driven Knee Resection and Gap Balancing System for Kinematic Alignment

Publication ID: 24-11857202_0003_PTD

Published: November 07, 2025

Category:Synergistic Combinations

Legal Citation

pr1or.art Inc., “AI-Driven Knee Resection and Gap Balancing System for Kinematic Alignment,” Published Technical Disclosure No. 24-11857202_0003_PTD, Published November 07, 2025, available at https://archive.pr1or.art/24-11857202_0003_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

A synergistic combination of AI, IoT, blockchain, and smart materials to optimize knee resection and gap balancing for kinematic alignment in total knee arthroplasty, enhancing surgical accuracy, efficiency, and patient outcomes.

Background and Problem Solved

Current knee resection and gap balancing instruments and techniques lack real-time adaptability and precision, leading to suboptimal kinematic alignment and compromised patient outcomes. The present inventive concept addresses these limitations by integrating cutting-edge technologies to create a more powerful and accurate system.

Detailed Description of the Inventive Concept

The AI-driven knee resection and gap balancing system comprises a tibial positioner device integrated with an AI-powered kinematic alignment module, IoT-enabled sensors, a blockchain-secured database, and a smart material-based actuator. The system optimizes cutting plane orientation based on patient-specific anatomy and movement patterns, monitors and adjusts gap balancing in real-time, and enables secure storage and access of patient-specific alignment data. The system's components work synergistically to provide a more accurate, efficient, and personalized surgical experience.

Novelty and Inventive Step

The inventive concept's novelty lies in the synergistic combination of AI, IoT, blockchain, and smart materials to create a more powerful and accurate knee resection and gap balancing system. The integration of these distinct technologies enables real-time adaptability, precision, and personalization, which is not achievable with current instruments and techniques.

Alternative Embodiments and Variations

Alternative embodiments may include the use of other AI algorithms, IoT sensor configurations, or blockchain architectures. Variations may also involve integrating the system with other surgical instruments or platforms, or using different smart materials for the actuator.

Potential Commercial Applications and Market

The AI-driven knee resection and gap balancing system has significant commercial potential in the orthopedic and medical device industries, with potential applications in hospitals, surgical centers, and outpatient clinics. The system's ability to enhance surgical accuracy, efficiency, and patient outcomes may lead to increased adoption and market share.

CPC Classifications

Section	Class	Group
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

Section 103 Obviousness Analysis (PHOSITA)

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Field of Art

Orthopedic surgical instrumentation, specifically knee arthroplasty positioning systems and surgical intervention technologies, requiring advanced knowledge of biomechanical engineering, medical device design, and surgical procedural techniques

Person of Ordinary Skill (PHOSITA) Profile

A biomedical engineer or orthopedic surgical instrument designer with expertise in medical device development, understanding of kinematic alignment principles, proficiency in computer-aided design, and familiarity with emerging medical technology integration strategies

Obviousness Rationale

A PHOSITA would recognize that integrating advanced computational technologies like AI, IoT, and blockchain into existing knee resection positioning systems represents a predictable evolution of surgical instrumentation. The core mechanical principles of tibial positioning and gap balancing established in the source patent provide a foundational framework that can be naturally extended through computational and sensor-based enhancements. The PTD's variations demonstrate incremental technological improvements that would be obvious to a skilled practitioner seeking to optimize surgical precision and patient outcomes.

Obvious Combinations & Variations

Source Patent Element

Tibial coupling block with laterally spaced coupler pins for positioning

PTD Variation

AI-powered kinematic alignment module integrated with tibial positioner device to optimize cutting plane orientation

Obviousness Reasoning

Applying machine learning algorithms to existing mechanical positioning systems represents a known technique for improving surgical precision, with predictable results of enhanced anatomical alignment

Source Patent Element

Femoral and tibial coupling blocks with extension mechanisms

PTD Variation

IoT-enabled sensors monitoring and dynamically adjusting gap balancing in real-time

Obviousness Reasoning

Augmenting mechanical positioning systems with real-time sensor feedback is a predictable technological enhancement that a PHOSITA would recognize as improving surgical accuracy

Source Patent Element

Bone resection instruments for total knee arthroplasty

PTD Variation

Blockchain-secured database storing patient-specific alignment data for surgical reference

Obviousness Reasoning

Implementing secure data management techniques for surgical planning represents a logical extension of existing medical record and instrumentation technologies

Source Patent Element

Cutting plane positioning mechanisms

PTD Variation

Smart material-based actuator enabling dynamic cutting plane adjustment with machine learning algorithms

Obviousness Reasoning

Utilizing adaptive materials and computational guidance for surgical instrument positioning is a foreseeable technological progression in medical device design

Source Patent Element

Surgical positioning system for knee arthroplasty

PTD Variation

Integration with computer-aided design and additive manufacturing for customized implant creation

Obviousness Reasoning

Extending surgical positioning technologies to include personalized implant design represents a natural technological convergence with predictable benefits in surgical outcomes

35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11857202 and the disclosed technological variations, a person having ordinary skill in the art would find the claimed innovations obvious, as they represent predictable technological extensions of existing knee arthroplasty positioning systems through the integration of computational, sensor, and data management technologies. The disclosed variations demonstrate no more than the application of known techniques to existing mechanical frameworks, resulting in foreseeable improvements in surgical precision and patient-specific intervention strategies.

Original Patent Information

Patent Number	US 11,857,202
Title	Knee resection and gap balancing instruments and techniques for kinematic alignment
Assignee(s)	Zimmer, Inc.