Fluid-Filled Cannula Access for Smoke-Free Surgical Visibility

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Solution Overview

Problem

Smoke and vapors generated during minimally invasive surgical procedures using handheld rotary medical devices impair visibility, increasing procedure duration and costs.

Innovation Solution

A modular access medical system with a cannula and aspiration port that maintains a fluid environment within the cannula, using detachable segments and dams to retain fluid and prevent smoke, and an aspiration system to manage fluid levels, ensuring clear visibility for surgeons.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If handheld rotary medical devices are used to create smoke at the surgical site, then surgical access and tissue manipulation are improved, but visibility is impaired and procedure time increases

Engineering Contradiction:

Improvesurgical accessVSAvoidvisibility

Core Design Contradiction:

Ease of operationVSIllumination intensity

Solution Approach 1:

A fluid intermediary substance is introduced into the cannula to suppress smoke generation and improve visibility. The fluid acts as a mediator between the rotary medical device and the surgical site, allowing the device to function while preventing smoke from obscuring the surgeon's view. This resolves the contradiction by enabling both surgical access and visibility simultaneously.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The cannula creates a controlled fluid environment that acts as an inert atmosphere, preventing smoke particles from forming and propagating. By maintaining this fluid-filled environment, the system eliminates the harmful smoke byproducts while preserving the ability to perform rotary surgical operations, thus improving both visibility and surgical access.

Inventive Principle:

Principle #39Inert atmosphere (Inert environment)

2Adaptability or versatility

If smoke is generated during surgical procedures, then tissue manipulation capability is enhanced, but procedure duration increases and costs rise

Engineering Contradiction:

Improvetissue manipulation capabilityVSAvoidprocedure duration

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The system converts the harmful smoke generation into a beneficial fluid-based environment. Instead of allowing smoke to obscure the surgical field, the fluid fills the cannula and suppresses smoke formation, transforming a harmful byproduct into a useful visibility-enhancing medium. This allows tissue manipulation to proceed without the time loss associated with smoke management.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Illumination intensity

If a fluid environment is maintained within the cannula to eliminate smoke, then visibility is improved, but fluid retention and management complexity increase

Engineering Contradiction:

ImprovevisibilityVSAvoidfluid management complexity

Core Design Contradiction:

Illumination intensityVSDevice complexity

Solution Approach 1:

The cannula is divided into detachable segments that can be easily assembled and disassembled. This segmentation simplifies fluid management by allowing the surgeon to configure the cannula length according to procedural needs and facilitates easy cleaning and maintenance, reducing the overall complexity of the fluid retention system while maintaining visibility benefits.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The cannula length is made dynamic and adjustable through detachable segments. The surgeon can configure the cannula to the appropriate length for each specific procedure, optimizing fluid retention and visibility while minimizing unnecessary complexity. This dynamic adaptability allows the system to simplify itself for each unique surgical scenario.

Inventive Principle:

Principle #15Dynamics

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The system enhances surgical visibility by eliminating smoke and vapors, allowing efficient and cost-effective surgical procedures by maintaining a controlled fluid environment.

Implementation Method 1

The system increases visibility to an operating surgeon by eliminating smoke and other vapors formed during use of a medical instrument at the surgical site

Methodology Applied

Scientific EffectSmoke elimination through fluid environment:

Implementation Method 2

an aspiration system to manage fluid levels

Methodology Applied

Scientific EffectAspiration: Suction

Implementation Method 3

one or more dams positioned in the housing to retain the fluids in the working channel of the housing

Methodology Applied

Scientific EffectFluid retention:

Data Source

PatentUS20260013714A1System providing improved visibility for minimally invasive surgery systems

Publication Date: 2026.01.15 ARTHREX INC

AI summary

A modular access medical system configured to enable a surgeon to conduct a medical procedure in fluid contained within a defined space is disclosed. As such, the system increases visibility to an operating surgeon by eliminating smoke and other vapors formed during use of a medical instrument at the surgical site. The modular access medical system may be formed from a distal end of a cannula configured to be placed into contact with tissue such that fluid can be administered within the cannula and retained therein to facilitate a surgical procedure to be conducted via one or more instruments extending through fluid contained within the cannula.