Surgical Cutting Accessory With Alternating Teeth And Straight Edges

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Solution Overview

Problem

Existing endoscopic surgical tools require multiple accessories for different cutting styles, leading to increased costs, complexity, and limited ability to achieve both aggressive tissue resection and smooth-cut finishes with a single accessory.

Innovation Solution

A surgical cutting accessory with alternating toothed and straight cutting edges at the distal end, allowing for both aggressive and smooth cutting actions with a single tool, reducing the need for multiple accessories and minimizing tissue damage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple cutting accessories are used for different cutting styles, then aggressive tissue resection and smooth-cut finishes can be achieved, but device complexity and equipment costs increase

Engineering Contradiction:

Improvecutting style versatilityVSAvoidaccessory quantity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines both aggressive cutting teeth and smooth-cut straight edges onto a single cutting accessory head. The cutting head includes multiple cutting edges where at least one edge has teeth for aggressive tissue resection and at least one edge has straight edges for smooth-cut finishes, eliminating the need for multiple separate accessories

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The cutting accessory is designed with multi-functional cutting edges that can perform both aggressive tissue resection and smooth-cut finishing operations. The universal cutting head can adapt to different surgical requirements by utilizing different edge types (toothed or straight) on the same accessory, reducing equipment inventory needs

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple cutting accessories are used for different cutting styles, then both aggressive and smooth cutting can be achieved, but procedural time increases

Engineering Contradiction:

Improvecutting style versatilityVSAvoidprocedural time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

By merging both toothed and straight cutting edges into a single accessory, the patent eliminates the time required to remove one accessory and attach another when transitioning between aggressive resection and smooth finishing operations. The surgeon can switch cutting modes instantly by utilizing different edges on the same accessory head

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If multiple cutting accessories are used for different cutting styles, then various cutting actions can be achieved, but equipment costs increase

Engineering Contradiction:

Improvecutting action varietyVSAvoidequipment cost

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The universal cutting accessory design allows a single piece of equipment to perform multiple cutting functions (aggressive resection and smooth finishing). This multi-functionality reduces the total number of accessories that need to be purchased and maintained, thereby lowering overall equipment costs while preserving cutting action variety

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS9839441B2Surgical tool arrangement and surgical cutting accessory for use therewith

Publication Date: 2017.12.12 STRYKER CORP

AI summary

A surgical tool arrangement for performing endoscopic surgical procedures which includes a powered handpiece and a cutting accessory which detachably connects to the handpiece and incorporates a cutting head configuration which provides both aggressive tissue resection and a smooth-cut finish on treated tissue.