Enhanced Acetabular Cup System with Integrated Locking Mechanism and Modular Design

Publication ID: 24-11857422_0006_PTD

Published: October 28, 2025

Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Enhanced Acetabular Cup System with Integrated Locking Mechanism and Modular Design,” Published Technical Disclosure No. 24-11857422_0006_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857422_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. 11,857,422.

Summary of the Inventive Concept

The present invention relates to an improved acetabular cup system for hip replacement, featuring an integrated locking mechanism, modular design, and advanced materials to enhance osseointegration, reduce implant failure, and improve patient outcomes.

Background and Problem Solved

The original acetabular cup system patent has limitations in terms of liner dislodgement, surgical time, and material versatility. The new inventive concept addresses these limitations by introducing an integrated locking mechanism, expandable liners, and modular design with advanced materials, thereby improving joint stability, reducing surgical time, and increasing the system's versatility.

Detailed Description of the Inventive Concept

The enhanced acetabular cup system consists of a cup with an integrated locking mechanism, a liner with a hydrophilic surface, and an intermediate adapter for modular design. The locking mechanism ensures secure retention of the liner, while the hydrophilic surface enhances osseointegration. The adapter enables the use of different liner materials and geometries, increasing the system's versatility. The expandable liner reduces surgical time and improves joint stability. The system's components are designed to work in harmony, providing a secure, stable, and efficient hip replacement solution.

Novelty and Inventive Step

The new claims introduce an integrated locking mechanism, expandable liners, and modular design with advanced materials, which are not present in the original patent. These features provide a significant improvement over the existing technology, addressing the limitations of liner dislodgement, surgical time, and material versatility.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept may include different locking mechanisms, such as snap-fit or screw-based systems. The modular design could be adapted to accommodate different liner materials, such as ceramic or polyethylene. The system could also be modified for use in other joint replacement applications, such as knee or shoulder replacements.

Potential Commercial Applications and Market

The enhanced acetabular cup system has significant commercial potential in the hip replacement market, which is expected to grow due to an aging population and increasing demand for joint replacement procedures. The system's improved performance, reduced surgical time, and increased versatility make it an attractive solution for orthopedic surgeons and hospitals.

CPC Classifications

Section	Class	Group
A	A61	A61F2/34
A	A61	A61F2002/30092
A	A61	A61F2002/30156
A	A61	A61F2002/30383
A	A61	A61F2002/30784
A	A61	A61F2002/3403
A	A61	A61F2002/349
A	A61	A61F2002/3414
A	A61	A61F2310/00017
A	A61	A61F2310/00029
A	A61	A61F2310/00131

Section 103 Obviousness Analysis (PHOSITA)

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Field of Art

Orthopedic medical devices, specifically hip replacement implant systems, requiring advanced knowledge of biomechanical engineering, materials science, and surgical prosthetic design

Person of Ordinary Skill (PHOSITA) Profile

A biomedical engineer or orthopedic device designer with expertise in implant materials, surgical interface design, and biomechanical compatibility, typically holding a master's or doctoral degree with 5-10 years of specialized experience in medical device development

Obviousness Rationale

A PHOSITA would recognize that the PTD's variations represent predictable engineering solutions to known limitations in acetabular cup systems. The disclosed integrated locking mechanism, modular design, and surface modifications are logical extensions of existing technologies that address common challenges in hip replacement implants. These variations would be considered routine design optimization within the standard problem-solving approach of orthopedic device engineering.

Obvious Combinations & Variations

Source Patent Element

Tapered wall of cup and liner engagement mechanism from source patent claim 5

PTD Variation

Integrated locking mechanism with expanded geometrical configurations to prevent liner dislodgement

Obviousness Reasoning

A PHOSITA would find it obvious to modify the existing tapered engagement mechanism with additional locking features as a predictable solution to improving implant stability, using known mechanical interlocking techniques

Source Patent Element

Metallic material options for liner from source patent claim 4

PTD Variation

Modular adapter system enabling broader material compatibility and liner geometry variations

Obviousness Reasoning

Expanding material selection through a modular design represents a standard engineering approach to increasing device versatility, using well-understood design principles of interchangeability

Source Patent Element

Porous outer surface coating from source patent claim 2

PTD Variation

Hydrophilic surface treatment combined with porous coating to enhance osseointegration

Obviousness Reasoning

Combining surface modification techniques to improve biological integration is a predictable optimization that a PHOSITA would recognize as a logical extension of existing surface engineering approaches

Source Patent Element

Basic acetabular cup system design with interchangeable components

PTD Variation

Expandable liner mechanism to reduce surgical time and improve joint stability

Obviousness Reasoning

Developing alternative component geometries to streamline surgical procedures represents a standard problem-solving approach in medical device design, using known mechanical principles

35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11857422, a person having ordinary skill in the art would find the variations disclosed in the present technical publication to be obvious extensions of the prior art. The incremental modifications to acetabular cup system design represent predictable engineering solutions that would be readily conceived by a skilled practitioner seeking to address known limitations in hip replacement implant technologies.

Original Patent Information

Patent Number	US 11,857,422
Title	Acetabular cup system
Assignee(s)	Encore Medical, LP