Segmented Surgical Tool Cutting Elements Heat Management

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Solution Overview

Problem

Existing surgical tools with cutting elements fail to provide precise machining results while minimizing material waste and heat generation during surgical procedures, and often require complex designs or costly materials.

Innovation Solution

A surgical tool with a processing unit featuring at least two cutting elements arranged in segments, made from hard metals or ceramics, which are cohesively connected to a cylindrical base body, forming a free-cutting area that extends radially to maintain distance from the base body, thereby preventing heat buildup and optimizing material usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If cutting elements are arranged continuously over the entire surface of the machining unit, then the machining unit can process material along the entire circumference, but this generates excessive heat and requires more material

Engineering Contradiction:
Improvemachining coverageVSAvoidheat generation
Core Design Contradiction:
ProductivityVSTemperature

Solution Approach 1:

The cutting elements are arranged in at least two separate groups along the circumferential direction, creating a segmented configuration. This segmentation divides the continuous cutting action into discrete segments, allowing heat to dissipate between segments while maintaining effective machining coverage. The groups are positioned to ensure that not all cutting elements engage the workpiece simultaneously, reducing peak heat generation.

Inventive Principle:
Principle #1Segmentation

2Productivity

If cutting elements are arranged continuously over the entire surface, then complete circumferential machining is achieved, but material consumption and cost increase

Engineering Contradiction:
Improvemachining coverageVSAvoidmaterial consumption
Core Design Contradiction:
ProductivityVSLoss of substance

Solution Approach 1:

The cutting elements are arranged in at least two separate groups along the circumferential direction, creating a segmented configuration. This segmentation divides the continuous cutting action into discrete segments, allowing heat to dissipate between segments while maintaining effective machining coverage. The groups are positioned to ensure that not all cutting elements engage the workpiece simultaneously, reducing peak heat generation.

Inventive Principle:
Principle #1Segmentation

3Productivity

If cutting elements are arranged continuously over the entire surface, then complete circumferential machining is achieved, but the design becomes more complex

Engineering Contradiction:
Improvemachining coverageVSAvoiddesign complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The cutting elements are arranged in at least two separate groups along the circumferential direction, creating a segmented configuration. This segmentation divides the continuous cutting action into discrete segments, allowing heat to dissipate between segments while maintaining effective machining coverage. The groups are positioned to ensure that not all cutting elements engage the workpiece simultaneously, reducing peak heat generation.

Inventive Principle:
Principle #1Segmentation

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

This design achieves precise machining with reduced material costs, simplified cleaning, and a robust structure, ensuring efficient and cost-effective surgical procedures with minimized heat generation and material waste.

Implementation Method 1

The cutting elements extend over the entire surface of the machining unit and are arranged segmentally, allowing for effective material removal through abrasive action while maintaining a clearance area that reduces heat buildup

Methodology Applied
Scientific EffectAbrasion: Abrasion

Data Source

PatentEP2765929B1Surgical tool
Publication Date: 2021.01.13 STERIS DEUT GMBH
  • EP2765929B1 patent drawingFigure 1~2
  • EP2765929B1 patent drawingFigure 3~4

AI summary

The invention relates to surgical tool with a base module (10), a coupling element (12) and a processing unit (14), wherein the processing unit (14) comprises at least one processing region (16) and at least one free-cutting region (18). It is proposed that the processing unit (14) has at least two segmentally arranged cutting elements (20).