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Demo-kit

A myoelectric prosthetic trial limb for below-elbow amputees and individuals without amputations

ROLE  

PROCESS

Industrial Design Intern

User Research, Benchmarking, Competitor Analysis, User Interviews, Ideation, Form Exploration, Prototyping, Ergonomics, CAD & 3D Renders  

TEAM 

Dee Dee Labs Pvt. Ltd.

Overview

Brief 

Designing an attachable demonstration kit for a prosthetic hand for easy installation on amputees and general people to let users experience the actual product.   

Target Audience

Objective

To design a prosthetic device that fits amputees and individuals without amputations which will enable them to experience how the device functions post-installation.

To help users train and familiarise themselves with the electromyography sensory technology

 

Let users perform the tasks while enacting the gestures. 

Below Elbow Amputees, Individuals without amputations and Prosthetist

Interacting with users

Interviews

Dr. Dhiren Joshi

(Prosthetist)

Vishal Bagul

(Amputee)

Babita Singh

(Amputee)

Insights
During our conversations with amputees and professionals, the following key points emerged

1

Trial and Testing: Users want to try the technology and the prosthesis before making a purchase.

2

Custom Fit:
A single socket does not fit everyone due to variations in stump structure.

3

Functionality Assurance:
Users need confidence that the product will meet their basic needs.
Comprehensive Analysis of Prosthetic Limb Integration

We met a few amputees to understand the physiology of the arm, main objectives were to:

  • Observing muscle movements and measuring anthropometric dimensions of the amputated limb

  • Understanding typical movements and gestures of limbs

  • Examining prosthetic socket fit on the limb

  • Analyzing muscle contact points with sensors in different positions and orientation

Market Analysis and Opportunity Spaces
Insights
Our market analysis revealed that various products for both amputees and non-amputees are used to experience the product and technology. Two distinct categories were observed in product types:

1

EMG Sensor-Based: 
Enables users to perform gestures by installing EMG sensors on their limbs. More favourable for Amputees

2

Button-Based: 
Allows non-amputees to perform activities by pressing buttons.

*However, this revealed an interesting opportunity: current products fail to integrate both experiences and adequately serve both user groups with a single device.

Image Credits: Youtube Screenshots*

Ideation

Approach

A variety of concepts were explored based on ways of installation, ergonomics, form, aesthetics and function. 

Form Exploration

Various grip gestures were tested on modeling clay to understand wrist and hand orientation, ease of functionality, ergonomic positioning, and the kit's form factor.

The 3D clay forms achieved after analysing grip patterns, they were further iterated to attain better and ergonomic grip for normal users. 

Mockups

Actual-size mockups were created and tested on users to finalize the form factor.