Advanced Nested Cannula System with Enhanced Safety and Efficiency Features

Publication ID: 24-11857217_0006_PTD
Published: November 07, 2025
Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Advanced Nested Cannula System with Enhanced Safety and Efficiency Features,” Published Technical Disclosure No. 24-11857217_0006_PTD, Published November 07, 2025, available at https://archive.pr1or.art/24-11857217_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. 11,857,217.

Summary of the Inventive Concept

An improved nested cannula system that incorporates unique identifiers, integrated sensors, adjustable ergonomic grips, self-cleaning mechanisms, and built-in cutting tools to enhance safety, efficiency, and precision in surgical procedures.

Background and Problem Solved

The original nested cannula system patent addressed the need for surgeons to access different areas of a patient's body during surgical procedures. However, the system had limitations, such as the potential for tissue damage, infection risks, and procedural inefficiencies. The new inventive concept builds upon the original patent by introducing novel features that address these limitations and improve the overall surgical experience.

Detailed Description of the Inventive Concept

The advanced nested cannula system comprises a plurality of cannulas, each with a unique identifier, allowing surgeons to quickly select the appropriate size cannula. The system also includes cannulas with integrated sensors that monitor tissue stress and adjust the cannula's size accordingly, minimizing tissue damage and promoting faster healing. Additionally, the handle features an adjustable ergonomic grip, enabling surgeons to customize the grip to fit their hand and reduce fatigue during procedures. The system also incorporates a self-cleaning mechanism using ultraviolet light to sterilize the cannulas, reducing the risk of infection and improving patient outcomes. Furthermore, the system includes a cannula with a built-in cutting tool, enabling surgeons to create precise incisions without the need for additional instruments, streamlining the surgical procedure and reducing recovery time.

Novelty and Inventive Step

The new inventive concept introduces a novel combination of features that are not present in the original patent, including unique identifiers, integrated sensors, adjustable ergonomic grips, self-cleaning mechanisms, and built-in cutting tools. These features provide a significant improvement in safety, efficiency, and precision, making the advanced nested cannula system a non-obvious and innovative solution.

Alternative Embodiments and Variations

Alternative embodiments of the advanced nested cannula system could include different materials, shapes, and sizes of cannulas, as well as variations in the sensor technology, ergonomic grip design, and self-cleaning mechanisms. Additionally, the system could be adapted for use in different surgical specialties, such as orthopedic, neurosurgical, or cardiovascular procedures.

Potential Commercial Applications and Market

The advanced nested cannula system has significant commercial potential in the medical device industry, particularly in the areas of surgical instrumentation and patient safety. The system's enhanced features and improved performance could attract a wide range of customers, including hospitals, surgical centers, and medical research institutions. The market for surgical instruments is projected to grow significantly in the coming years, driven by advances in medical technology and an increasing demand for minimally invasive procedures.

CPC Classifications

SectionClassGroup
A A61 A61B17/3439
A A61 A61B2017/347

Field of Art

Surgical instrumentation, specifically minimally invasive surgical access devices and nested cannula systems, requiring advanced knowledge of medical device design, surgical techniques, and biomechanical engineering

Person of Ordinary Skill (PHOSITA) Profile

A biomedical engineer or surgical instrument designer with advanced degree, 5-10 years experience in medical device development, familiar with surgical access technologies, material science, and ergonomic design principles

Obviousness Rationale

A PHOSITA would recognize that the advanced features in the PTD represent predictable technological improvements to the existing nested cannula system, utilizing known techniques in medical device enhancement. The variations represent logical extensions of the source patent's core nested cannula concept, applying standard design optimization strategies to improve functionality, safety, and surgical efficiency. Each proposed modification addresses known limitations in existing surgical access technologies through straightforward engineering solutions.

Obvious Combinations & Variations

Source Patent Element
Nested cannula system with interlocking components of varying sizes
PTD Variation
Adding unique identifiers to each cannula for quick size identification
Obviousness Reasoning
Implementing identification systems is a known technique in medical device design, representing a predictable solution to improve instrument selection and reduce surgical errors
Source Patent Element
Surgical access device with multiple component interactions
PTD Variation
Integrating sensors to monitor tissue stress and dynamically adjust cannula size
Obviousness Reasoning
Incorporating real-time monitoring technology is a standard approach in medical device evolution, representing an obvious enhancement to improve patient safety and surgical precision
Source Patent Element
Handle design for surgical instruments
PTD Variation
Developing an adjustable ergonomic grip to reduce surgeon fatigue
Obviousness Reasoning
Ergonomic improvements are a well-established design approach in surgical instrumentation, representing a predictable optimization of existing handle technologies
Source Patent Element
Surgical access devices requiring sterilization
PTD Variation
Implementing a self-cleaning mechanism using ultraviolet light
Obviousness Reasoning
UV sterilization is a known technique in medical device processing, representing a straightforward solution to infection control challenges
Source Patent Element
Cannula system designed for surgical access
PTD Variation
Incorporating a built-in cutting tool within the cannula structure
Obviousness Reasoning
Multi-functional surgical instruments are a common design strategy, representing an obvious combination of known surgical tool capabilities
35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11857217 and the disclosed technical variations, a person having ordinary skill in the art would find the proposed nested cannula system enhancements to be obvious modifications. The combination of known medical device design techniques with the foundational nested cannula concept demonstrates that the claimed innovations represent predictable technological improvements that would be apparent to a skilled practitioner in surgical instrumentation design.

Original Patent Information

Patent NumberUS 11,857,217
TitleNested cannula system
Assignee(s)Acumed LLC