NEED STATEMENT – 1

Designing a prosthetic hand for people suffering from the hand disabilities and unable to perform their daily activities due to the hand disability.

Data on Basic survey and customer interaction:-

Observation and from Literature survey	Requirements
1.Weight of other products manufactured in market by other product makers?	Total weight 400-800 grams
2.Clients of common age group?	All age Compatibility
3.Cost of products in market?	3,50,000-5,00,000 Rs

1.1 Identifying on client’s objective gives: (Design objectives)

Objectives
1.The prosthetic hand must feel and perform like a normal hand
2.Portable
3.Comfortable
4.Affordable

1.2 Prioritize the Identified Design Objectives

Priority among various objectives by Pair Wise Comparison Chart

Objective	Safety	Cost	User Interface	Comfortable	Score
Safety	*	1	1	1	3
Cost	0	*	1	1	2
User Interface	0	0	*	0	0
Comfortable	0	1	0	*	1

Ranking the objective in Decreasing value of Importance:-

1.Safety

2.Cost

3.Comfortable

4.User Interface

Based on the survey and Information collected by the various sources :-

Version 1.1
Design a product for physically challenged people which is safe to use , affordable, portable, and work with less human interface.

Identified Constraints By Client Survey :-

1.Weight must be within the 5 kilograms.

2.Cost of the machine be under Rs 6,000.

Version1.2:-
Design a product for physically challenged people which is safe to use, affordable, portable, and work with less human interface, the weight must be within the 5 kilograms. And cost of the machine be under Rs 6,000.

Identified functions :-

1. Lifting the objects.

2. Holding the objects.

3. Tilting the object with the desired angles.

Problem Definition
Design a device that can aid amputee to perform tasks like grabbing the objects, lifting and moving the objects. The device is targeted to help people irrespective of age. Designed device should be safe to use, affordable with less human interface. Device should not cost more than Rs 6,000 and should not weigh more than 5 kilograms