Enhanced Shoulder Prostheses with Improved Stability and Customization

Publication ID: 24-11857427_0006_PTD
Published: October 28, 2025
Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Enhanced Shoulder Prostheses with Improved Stability and Customization,” Published Technical Disclosure No. 24-11857427_0006_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857427_0006_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. 11,857,427.

Summary of the Inventive Concept

This inventive concept presents a suite of direct improvements and enhancements to existing shoulder prostheses, focusing on optimizing implantation, enhancing stability, integrating sensors, reducing failure risks, and providing modular customization options.

Background and Problem Solved

The original patent describes shoulder prostheses with stemless and stemmed humeral components. However, these designs have inherent limitations, such as difficulties in aligning the components with anatomical axes, inadequate fixation points, and lack of real-time monitoring capabilities. The new inventive concept addresses these limitations by introducing novel features that improve the overall performance and safety of shoulder prostheses.

Detailed Description of the Inventive Concept

The inventive concept comprises a method for optimizing implantation using a surgical guide, a system for enhancing stability with distributed fixation points and a locking mechanism, a shoulder prosthesis with an integrated sensor for real-time monitoring, a method for reducing failure risks through pre-operative bone density analysis and customized stem geometry, and a modular system allowing for conversion between stemless and stemmed components. These innovations work together to provide a more efficient, safer, and more effective shoulder replacement procedure.

Novelty and Inventive Step

The new claims introduce a novel combination of features that significantly improve the existing shoulder prostheses. The inventive step lies in the integration of these features, which provides a synergistic effect, enhancing the overall performance and safety of the prostheses. Specifically, the use of a surgical guide, distributed fixation points, integrated sensors, and customized stem geometry are new and non-obvious compared to the original patent.

Alternative Embodiments and Variations

Alternative embodiments may include different surgical guide designs, various fixation point configurations, or alternative sensor technologies. Additionally, the modular system could be adapted for use in other joint replacement procedures, such as hip or knee replacements.

Potential Commercial Applications and Market

The enhanced shoulder prostheses have significant commercial potential in the orthopedic industry, particularly in the areas of joint replacement and sports medicine. The target market includes orthopedic surgeons, hospitals, and medical device manufacturers seeking to improve patient outcomes and reduce complications.

CPC Classifications

SectionClassGroup
A A61 A61F2/4014
A A61 A61F2/30749
A A61 A61F2002/30383
A A61 A61F2002/30428
A A61 A61F2002/4022

Field of Art

Orthopedic surgical implants, specifically shoulder prosthesis design and joint replacement technologies, requiring advanced knowledge of biomechanical engineering, surgical techniques, and medical device design

Person of Ordinary Skill (PHOSITA) Profile

A biomedical engineer or orthopedic device designer with advanced degree, 5-10 years experience in medical device development, familiar with surgical implant design, biomaterials, and anatomical constraints

Obviousness Rationale

A person skilled in the art would recognize that the published technical disclosure represents predictable variations and incremental improvements to the existing shoulder prosthesis design, utilizing known techniques in sensor integration, surgical alignment, and modular component design that naturally extend the source patent's fundamental teachings.

Obvious Combinations & Variations

Source Patent Element
Anchor member with circumferential groove and base configuration
PTD Variation
Surgical guide for precise component alignment using the base's geometric features
Obviousness Reasoning
A PHOSITA would recognize that precise surgical alignment is a standard design goal, and using the existing base geometry as a reference point for a surgical guide represents a predictable engineering solution
Source Patent Element
Humeral component with potential for modular design
PTD Variation
Adapter mechanism for converting between stemless and stemmed components
Obviousness Reasoning
Modular medical device design is a known technique, and a skilled practitioner would find it obvious to create convertible implant systems that provide surgical flexibility based on patient-specific anatomical requirements
Source Patent Element
Anchor member with through-hole and potential internal structures
PTD Variation
Integrated sensor cavity within the humeral component for real-time monitoring
Obviousness Reasoning
Incorporating diagnostic sensors into medical implants is a well-established design approach, and a PHOSITA would recognize the utility of using existing structural cavities for sensor integration
Source Patent Element
Circumferential groove and support member configuration
PTD Variation
Distributed fixation points along stem length with selective locking mechanism
Obviousness Reasoning
Enhanced fixation strategies are a predictable design evolution in orthopedic implants, and a skilled designer would recognize multiple approaches to improving bone-implant interface stability
35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11857427 and the published technical disclosure, a person having ordinary skill in the art would find the claimed variations obvious, as they represent predictable extensions of existing shoulder prosthesis design principles, utilizing known techniques in medical device engineering to achieve incremental improvements in implant functionality, alignment, and patient-specific customization.

Original Patent Information

Patent NumberUS 11,857,427
TitleImplants, systems and methods of using the same
Assignee(s)DEPUY IRELAND UNLIMITED COMPANY