Retractable Needle-Tip Electrocautery Device Safety Mechanism

Solution Overview

Problem

Existing hand-held electrocautery devices with sharp needle tips pose a risk of accidental needle pricks and transmission of blood-borne pathogens to medical practitioners, as existing safety solutions, such as covers, are impractical for repeated use during surgery.

Innovation Solution

A needle-tipped electrocautery device with a retractable needle tip mechanism, either mechanically or electronically driven, that shields the needle when not in use and exposes it for surgical procedures upon activation, maintaining the device's functionality while reducing the risk of injury.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a sharp needle tip is used for electrocautery, then precision in cutting and cauterization is improved, but the risk of needle-stick transmission of blood-borne pathogens increases

Engineering Contradiction:

Improveprecision in cutting and cauterizationVSAvoidrisk of needle-stick transmission

Core Design Contradiction:

Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The needle tip is made dynamically retractable, transitioning from an exposed sharp tip during use to a retracted safe position during storage or non-use. The mechanism allows the needle to move between extended and retracted states automatically based on usage conditions, maintaining precision when needed while eliminating hazards when not in use.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The device performs self-protection through automatic retraction mechanisms that engage when the electrocautery device is not in use. The system autonomously retracts the needle tip without requiring manual intervention, thereby automatically eliminating the hazard while preserving the sharp tip for surgical procedures when activated.

Inventive Principle:

Principle #25Self-service

2Object-affected harmful factors

If a cover is used to shield the sharp needle tip, then protection against accidental pricks is improved, but the ease of operation deteriorates due to repetitive removal or retraction steps

Engineering Contradiction:

Improveprotection against accidental pricksVSAvoidease of use during repeated surgical procedures

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The device performs self-protection through automatic retraction mechanisms that engage when the electrocautery device is not in use. The system autonomously retracts the needle tip without requiring manual intervention, thereby automatically eliminating the hazard while preserving the sharp tip for surgical procedures when activated.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The needle tip is made dynamically retractable, transitioning from an exposed sharp tip during use to a retracted safe position during storage or non-use. The mechanism allows the needle to move between extended and retracted states automatically based on usage conditions, maintaining precision when needed while eliminating hazards when not in use.

Inventive Principle:

Principle #15Dynamics

3Productivity

If the needle tip is always exposed for immediate use, then productivity is improved, but the safety against accidental pricks deteriorates

Engineering Contradiction:

Improveimmediate availability for surgical useVSAvoidrisk of accidental needle pricks

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The needle tip is made dynamically retractable, transitioning from an exposed sharp tip during use to a retracted safe position during storage or non-use. The mechanism allows the needle to move between extended and retracted states automatically based on usage conditions, maintaining precision when needed while eliminating hazards when not in use.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The needle tip is pre-positioned in a retracted safe state during storage and transport, then automatically extended to the exposed position when the device is activated for use. This preliminary retraction eliminates hazards before use while ensuring immediate availability when needed through automatic extension upon activation.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS8133223B2Automatically retracting needle-tip electrocautery device

Publication Date: 2012.03.13 UNIV OF PITTSBURGH OF THE COMMONWEALTH SYST OF HIGHER EDUCATION

AI summary

Medical devices that useful during electrocauterization procedures. The present invention encompasses a needle-tipped electrocautery device in which the needle tip is housed within the body of the device when the device is not in use. When an extension mechanism on the electrocautery stylus is activated, the tip is exposed and may be used for surgical procedures. The mechanism may be either mechanically driven or electronically driven. The present invention thereby dramatically reduces the risk of injury or infection by inadvertent pricks from an electrocautery tool.