International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056
Volume: 04 Issue: 06 | June -2017 www.irjet.net p-ISSN: 2395-0072
© 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 2739
DESIGN AND DEVELOPMENT OF TWO IN ONE FOLDABLE STRETCHER
CUM WHEEL CHAIR
V.VIGNESH
1
, R.PRAKASH
2
, S.MATHEW STEPHEN
3
, S.ANISH KUMAR
4
1, 2,3,4
Assistant Professor , Department Of Mechanical Engineering , Sri Shakthi Institute Of Engineering And
Technology, Coimbatore , India
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Abstract - In this project the stretcher and wheel chair used
in hospitals are combined with each other, so that it can be
used for multi-purpose instead of using both of them
separately. It can reduce the mobility problem of the patients.
In ICU there is a problem of shifting the severely injured or
fractured patients from stretcher to wheel chair those
problems can be reduced by using this product. It is used to
take ECG & SCAN report for the patients without changing
from stretcher to wheelchair. This model consists of three
rectangular couches which are joined together. These joints
are not a permanent joint so that it can be adjustable to any
angles and also assemble or dismantle of this product will be
easy. These plates are joined by bolted joints, so that all the
plates can be foldable to stretcher or to wheel chair. Four
wheels are fitted in the base. The dimensions used for this
project is developed for Indian standards. All the dimensions
are taken from DzAnthropometric and strength data of Indian
agricultural workers for farm equipment designdz published by
central institute of agricultural engineering, Bhopal. All the
parts used in this project are made up of stainless steel 202 for
the Product development. The telescopic rods are used to
adjust the required length and angle the holes provided in the
telescopic pipe are used to fold the stretcher into different
angle. The product cost is Rs 14500 which is 40% less than the
conventional products.
Key Words: Mobility, Couches, dismantle, Anthropometric,
Telescopic rod.
INTRODUCTION
Stretchers have been used since olden days, on
battlefield and in urgent situation, where wheel vehicles are
delayed by uneven land. In their simplest form, they
generally consisted of a canvass with long edges sewn to
themselves to form pockets through with wooden poles
could be slid. This form was common with militaries right
through the middle of the 20th century, and in tragedy
situations, where rapid triaging and movement of patients
based on severity of injuries is critical, they are still used by
emergency response providers.
The stretchers used in emergency vehicles have
wheels that make shipping over highway easier, and have a
padlock inside on it to sheltered the injured during
transportation.
"Normalized" stretchers, or folding stretchers, are
the simplest type. They are made of two poles and two
transversal hinged bars with a cloth stretched between the
poles and four feet. The bars can be folded for storage. They
are now rarely used by modern emergency services, but are
still widely used by organizations for which the storage
space is an important factor, e.g. first aid associations, or
French companies (a stretcher is mandatory). These
stretchers are often used as beds.
Calamity stretchers are planned for simple storage
space and transportation. They consist of a
tubular aluminum arrangement with a washable fabric. They
cannot be fold up, but can be piled up.
As normalized or disaster stretcher have no
wheels, they are usually carried by three or four people.
When they must be carried by only two people, they tie
straps to the poles, so the weight is supported by the
shoulders and not by the hands.
The stretcher can also be used as a wheel chair for
carrying handicapped persons. For this top rectangular plate
has to be lifted up and by removing the rod which is fixed
with the middle plate. Now the rod is fixed at the required
place, hence the plate is in vertical position. The bottom
rectangular plates is also moved downwards by removing
the rod and fixed at the required place which is comfortable
for the patient.
The expandable rod fixed at the top rectangular
plate will be in vertical position. Now that rod has to be
moved downwards so that wheels touch the ground. This
can be achieved by removing the screw which is fixed for the
stretcher condition and it has to be reseated to the new
position for the wheel chair. The expandable rods fixed at
the middle plate can also be reseated to new position in
order to change the height of the wheel chair. Two rods are
fixed at the top the rectangular plate for keeping the hand in
the wheel chair so that the patient arms can be freed. A plate
is also fixed at the bottom of the bottom rectangular plate for
keeping the legs of the patient.
2. MATERIALS AND METHODS
For the design consideration we have analysed the
dimensions of human parameters and refers the
DzAnthropometric human data book”. The book consists of
human parameters like Total height, sitting height, acromial