Clipper Head Protuberances Reduce Skin Friction and Static Charge

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional electric clippers are inefficient for hair removal in medical procedures, causing skin irritation and static electrical fields that lead to contamination and increased cleaning time, while manual razors can result in nicks and infections.

Innovation Solution

A clipper head with protuberances on the base surface reduces friction and static charge, allowing for closer cuts with fewer passes and easier cleaning, featuring a design that minimizes surface contact with the skin and includes a static-charge-resistant housing for reduced contamination.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional electric clippers are used for hair removal, then hair can be removed quickly, but skin irritation and static electrical fields are generated causing contamination and increased cleaning time

Engineering Contradiction:
Improvehair removal speedVSAvoidskin irritation and static charge
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The base surface is segmented into multiple raised protuberances rather than a continuous flat surface. This segmentation reduces the total contact area between the clipper head and patient's skin, thereby reducing friction and static charge generation while maintaining effective hair cutting capability through the protuberance structures

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The housing material is specifically selected to be static-charge resistant, creating a local property difference between this clipper head and conventional ones. This material property change directly addresses the static electrical field problem while maintaining the overall clipper functionality

Inventive Principle:
Principle #3Local quality

2Manufacturing precision

If manual razors are used for hair removal, then complete hair removal can be achieved, but nicks, cuts, and skin irritation occur increasing infection risk

Engineering Contradiction:
Improvehair removal completenessVSAvoidskin injury and infection risk
Core Design Contradiction:
Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The clipper head is designed as a disposable component that can be sterilized and replaced. This allows for complete hair removal with a sharp cutting edge while eliminating the risk of nicks and cuts associated with reusable manual razors, as each new clipper head provides a fresh, safe cutting surface

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The manual razor's direct blade-to-skin contact is replaced with an electric clipper system that cuts hair without the blade touching the skin. The cutting action is performed by the clipper teeth mechanism, substituting the manual scraping action with an electrically-driven cutting mechanism that maintains safety while achieving complete hair removal

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Productivity

If conventional clipper heads are used, then hair can be removed, but multiple passes are required increasing procedure time and static charge accumulation

Engineering Contradiction:
Improvehair removal efficiencyVSAvoidnumber of passes required
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The protuberance structure allows the clipper head to maintain optimal contact points with the skin across multiple surface irregularities, enabling more effective hair cutting per pass. This reduces the number of passes needed while also reducing static charge accumulation due to reduced overall contact area

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The physical parameters of the base surface are changed by adding raised protuberances, which modifies the interaction between the clipper head and patient's skin. This parameter change improves cutting efficiency per pass while reducing friction-induced static charge, directly addressing both the efficiency and time loss problems

Inventive Principle:
Principle #35Parameter changes

4Stability of the object's composition

If conventional clipper heads with large base surface area are used, then stable contact with skin is achieved, but increased friction and static charge are generated

Engineering Contradiction:
Improvecontact stabilityVSAvoidfriction and static charge
Core Design Contradiction:
Stability of the object's compositionVSObject-generated harmful factors

Solution Approach 1:

The base surface is divided into multiple discrete protuberances that provide stable contact points with the skin. This segmentation maintains contact stability through distributed support points while reducing the total contact area, thereby decreasing friction and static charge generation compared to a continuous large base surface

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

The clipper head achieves more efficient hair removal with reduced skin irritation and static charge, requiring fewer passes and less maintenance, while maintaining a clear surgical site and minimizing contamination risks.

Implementation Method 1

one or more protuberances can be disposed along the base surface... reduce the amount of friction and static charge generated when the one or more clipper teeth are cutting

Methodology Applied
Scientific EffectFriction: Friction

Implementation Method 2

reduce the amount of friction and static charge generated when the one or more clipper teeth are cutting

Methodology Applied
Scientific EffectStatic electricity: Electrostatics

Implementation Method 3

one or more clipper teeth can extend from the intersection of the base surface and the front surface... the one or more clipper teeth are cutting a patient's hair

Methodology Applied
Scientific EffectMechanical cutting:

Data Source

PatentUS9713877B2Clipper head with drag reduction
Publication Date: 2017.07.25 MEDLINE INDUSTRIES
  • US9713877B2 patent drawing
  • US9713877B2 patent drawing
  • US9713877B2 patent drawing

AI summary

A clipper head (100) includes a base surface (102) and a front surface (204). One or more clipper teeth (109) extend from an intersection (108) of the base surface and the front surface. One or more protuberances (110,111,112) extend from the base surface. The protuberances reduce the surface area that contacts a patient's skin, thereby reducing friction and drag.