Enhanced Shield for Recurrent Laryngeal Nerve Protection during Neck Surgery

Publication ID: 24-11857696_0001_PTD
Published: October 28, 2025
Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Enhanced Shield for Recurrent Laryngeal Nerve Protection during Neck Surgery,” Published Technical Disclosure No. 24-11857696_0001_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857696_0001_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. 11,857,696.

Summary of the Inventive Concept

An advanced shield system designed to better protect the recurrent laryngeal nerve during neck surgeries, offering improved safety and efficiency through innovative material and design enhancements.

Background and Problem Solved

During neck surgeries, the recurrent laryngeal nerve is susceptible to damage, which can lead to vocal cord paralysis and other complications. The original patent, 'Shield for recurrent laryngeal nerve and associated methods,' provided a basic solution but had limitations in terms of material flexibility, nerve conformity, and tissue irritation. The new inventive concept addresses these limitations by introducing a tailored shield design, advanced biocompatible materials, and growth factor infusion to promote nerve regeneration.

Detailed Description of the Inventive Concept

The enhanced shield system comprises a shield with a shape tailored to accommodate the branching of the recurrent laryngeal nerve, made of a biocompatible material with a smooth surface to reduce tissue irritation. The shield's curved surface conforms to the natural shape of the nerve, ensuring optimal protection. Additionally, the shield can be made of a flexible, absorbable material infused with a growth factor to promote nerve regeneration. The system can be part of a surgical kit, featuring a detachable tab for easy removal after surgery. Furthermore, the shield can be coated with a layer of biologic tissue genetically engineered to express a neuroprotective factor, enhancing nerve protection during surgery.

Novelty and Inventive Step

The new claims introduce several innovative features not present in the original patent, including a tailored shield design, advanced biocompatible materials, growth factor infusion, and detachable tabs. These enhancements provide a significant improvement over the original patent, offering better nerve protection, reduced tissue irritation, and enhanced regeneration capabilities.

Alternative Embodiments and Variations

Alternative embodiments of the enhanced shield system could include using different biocompatible materials, varying the shield's shape and size to accommodate different nerve branching patterns, or integrating the shield with other surgical instruments. Additionally, the shield could be designed for use in other types of surgeries where nerve protection is critical.

Potential Commercial Applications and Market

The enhanced shield system has significant commercial potential in the medical device industry, particularly in the fields of otolaryngology, neurosurgery, and general surgery. The market for nerve protection devices is growing, driven by the increasing demand for safer and more efficient surgical procedures.

CPC Classifications

SectionClassGroup
A A61 A61L27/3834
A A61 A61L27/54
A A61 A61L27/58
A A61 A61L2430/22
A A61 A61L2430/32

Field of Art

Surgical medical devices and methods, specifically focused on nerve protection techniques during invasive surgical procedures, with expertise in biomedical engineering, tissue engineering, and surgical intervention technologies

Person of Ordinary Skill (PHOSITA) Profile

A medical device engineer or biomedical researcher with advanced degrees in bioengineering or medical technology, possessing knowledge of surgical techniques, biomaterials, tissue interactions, and nerve protection strategies

Obviousness Rationale

A person having ordinary skill would recognize that the PTD's variations represent predictable extensions of the source patent's core concept of nerve protection using biologic tissue shields. The disclosed enhancements such as tailored shape, biocompatible materials, and growth factor integration are logical refinements that would be apparent to a skilled practitioner seeking to optimize nerve protection during surgical procedures.

Obvious Combinations & Variations

Source Patent Element
Biologic tissue shield for covering recurrent laryngeal nerve during neck surgery
PTD Variation
Shield with shape tailored to accommodate nerve branching and featuring a smooth biocompatible surface
Obviousness Reasoning
Optimizing shield geometry and surface characteristics represents a routine design improvement that would be obvious to a PHOSITA seeking enhanced surgical protection
Source Patent Element
Flexible biologic tissue that takes on surrounding tissue shape
PTD Variation
Flexible shield infused with growth factor to promote nerve regeneration
Obviousness Reasoning
Incorporating therapeutic agents into surgical protective devices is a known technique in biomedical engineering with predictable results in tissue healing and regeneration
Source Patent Element
Dissolvable or absorbable biologic tissue shield
PTD Variation
Surgical kit with shield featuring detachable tab for easy removal and absorbable material
Obviousness Reasoning
Improving surgical device usability through modular design and material selection represents an expected design optimization for medical practitioners
Source Patent Element
Biologic tissue covering for nerve protection
PTD Variation
Genetically engineered biologic tissue layer expressing neuroprotective factors
Obviousness Reasoning
Enhancing protective materials through genetic modification is a foreseeable advancement in tissue engineering with predictable therapeutic potential
35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11857696 and the disclosed technical variations, a person having ordinary skill in the art would find the claimed innovations obvious and therefore unpatentable. The proposed shield system represents a straightforward combination of known surgical techniques, biomaterials, and protective strategies that would be readily conceived by a skilled practitioner seeking incremental improvements in nerve protection during invasive surgical procedures.

Original Patent Information

Patent NumberUS 11,857,696
TitleShield for recurrent laryngeal nerve and associated methods