Enhanced Interbody Implants with Adaptive Porosity and Reinforcement

Publication ID: 24-11857430_0006_PTD
Published: October 28, 2025
Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Enhanced Interbody Implants with Adaptive Porosity and Reinforcement,” Published Technical Disclosure No. 24-11857430_0006_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857430_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. 11,857,430.

Summary of the Inventive Concept

The present inventive concept introduces a new generation of spinal interbody devices with optimized structural integrity, enhanced mechanical strength, and improved bone growth promotion. By incorporating adaptive porosity, reinforcement materials, and lattice structures, these devices overcome the limitations of traditional implants and provide better patient outcomes.

Background and Problem Solved

Traditional spinal interbody devices often suffer from limited structural integrity, inadequate mechanical strength, and insufficient bone growth promotion. The original patent's solid structure and porous body design, while innovative, still present limitations in terms of customization, mechanical properties, and bone-biomaterial interaction. The present inventive concept addresses these limitations by introducing novel features that enhance the overall performance of interbody implants.

Detailed Description of the Inventive Concept

The new spinal interbody devices feature adaptive porosity, achieved through lattice structures with varying porosity levels, to accommodate different bone types and promote optimal bone growth. Reinforcement materials, such as embedded reinforcement members, are strategically integrated to enhance the device's mechanical strength and stability. The porous surface or coating of the solid structure is formed by interconnected cells with varying porosity levels, allowing for customized bone-biomaterial interaction. The inventive concept also encompasses methods for optimizing structural integrity, customizing implants, and promoting bone growth through bioactive materials.

Novelty and Inventive Step

The present inventive concept introduces a novel combination of adaptive porosity, reinforcement materials, and lattice structures, which provides a significant improvement over the original patent's design. The new claims' emphasis on customization, mechanical strength, and bone growth promotion represents a non-obvious advancement in the field of spinal interbody devices.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept may include varying lattice structures, such as hexagonal or triangular arrangements, to optimize mechanical properties and bone growth promotion. Other variations may incorporate different reinforcement materials, such as fibers or nanoparticles, to enhance the device's strength and durability. Additionally, the inventive concept could be adapted for use in other orthopedic applications, such as joint replacement or bone fracture repair.

Potential Commercial Applications and Market

The enhanced interbody implants with adaptive porosity and reinforcement have significant commercial potential in the orthopedic industry, particularly in the spinal implant market. The target industries include spinal implant manufacturers, orthopedic device companies, and medical research institutions. The inventive concept's ability to provide better patient outcomes, reduce revision rates, and improve surgical efficiency makes it an attractive solution for healthcare providers and patients alike.

CPC Classifications

SectionClassGroup
A A61 A61F2/442
A A61 A61F2/4455
A A61 A61F2/4611
A A61 A61F2/2846
A A61 A61F2002/2835
A A61 A61F2002/4629
A A61 A61F2250/0018
A A61 A61F2310/00023

Field of Art

Orthopedic medical devices, specifically spinal interbody implants, involving biomaterials engineering, mechanical design, and surgical biomechanics. Requires advanced knowledge in materials science, mechanical engineering, and orthopedic surgical techniques

Person of Ordinary Skill (PHOSITA) Profile

A biomedical engineer or orthopedic device designer with advanced degree, expertise in biomaterials, understanding of bone-implant interactions, capable of iterative design optimization and material property modifications

Obviousness Rationale

A PHOSITA would recognize that the PTD's variations represent predictable engineering solutions to known challenges in interbody implant design. The disclosed adaptive porosity, reinforcement strategies, and lattice structures are logical extensions of the source patent's foundational concepts. These modifications represent standard design optimization techniques commonly employed in orthopedic device development to enhance mechanical performance and biological integration.

Obvious Combinations & Variations

Source Patent Element
Porous body with plurality of sections having different porosity
PTD Variation
Gradient porosity structure decreasing from central to peripheral regions
Obviousness Reasoning
Predictable design optimization using known porosity manipulation techniques to control mechanical properties and bone integration
Source Patent Element
Solid structure embedded in porous body
PTD Variation
Embedding reinforcement members within solid structure to enhance mechanical strength
Obviousness Reasoning
Known technique of material reinforcement to improve structural integrity, representing a standard engineering approach to device performance enhancement
Source Patent Element
Intersecting members forming rectangular grid
PTD Variation
Alternative lattice structures including hexagonal and triangular arrangements
Obviousness Reasoning
Finite set of geometrically predictable structural configurations that a PHOSITA would recognize as interchangeable design choices
Source Patent Element
Porous structure with adjoining cells and pores
PTD Variation
Porous coating with interconnected cells and embedded bioactive materials
Obviousness Reasoning
Well-known strategy of incorporating bioactive agents into implant surfaces to promote bone growth, representing a standard approach in biomaterial design
Source Patent Element
Bone-contacting surfaces of interbody device
PTD Variation
Textured surface with varying porosity to optimize bone-biomaterial interaction
Obviousness Reasoning
Predictable surface modification technique to enhance osseointegration, utilizing known principles of surface engineering
35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11857430 and the disclosed technical variations, a person having ordinary skill in the art would find the claimed innovations obvious and anticipated. The published technical disclosure demonstrates that the claimed interbody implant modifications represent routine engineering design choices that would be apparent to a skilled practitioner, thereby rendering subsequent claims of novelty invalid under 35 U.S.C. Section 103.

Original Patent Information

Patent NumberUS 11,857,430
TitleInterbody implants and optimization features thereof
Assignee(s)Stryker European Operations Holdings LLC