Post on 02-Jun-2018
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Redesign of Hospital Bed Based on
Anthropometric Data: A CaseStudy in Bangladesh
Supervised by: Md. Ariful Islam
Assistant Professor
Department of IPE, RUET.
Represented by: Md. Nuruzzaman (075006)
Md. Asadujjaman (075015)
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Problem statement
The design of hospital bed should not be dependent on the
esthetic views consideration but also should be dependent on
the different dimensions of usersbody structure and postures.Improper design of medical bed is responsible for many types
of psychological and physical problems like back pain and it
hampers to sleep. There has a less number of Industrial or
Human Factor Engineer in our country. As a result, the concept
of ergonomics or human factor engineering is poor in Industry.
For this reason, Industries cannot imagine that ergonomics
approach can change their productivity and mental satisfaction
dramatically.
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Objective
To show the relationship of physical demand
(back pain, fatigue, blood circulation problem,
comfort and sleep) with anthropometric factorsfor normal hospital bed (Stature, Elbow span,
Political Height, Vertical grip reach) in
Bangladesh.
To build an anthropometric database for
Bangladeshi patient and redesign hospital bed
based on anthropometric data.
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Methodology
Step 1: Problem statement and objective selection
Step 2: Literature review
Step 3: Preparation of questionnairesStep 3: Visiting Hospital
Step 4: Collecting data from doctors and patients
Step 5: Collecting anthropometric data
Step 6: Data analysis
Step 7: Result, discussion and conclusion.
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Hospital Bed Parameters Related to
Anthropometric Measurements
Bed Length:The bed length is the horizontal distance between
two remotest edges of the bed surface. Users want to
accommodate their full body in the bed with average 20cm
clearance. So, mismatch occurs when the bed length is less
than Stature + 20 cm clearance.
Bed Width: The bed width is the horizontal distance between two
nearest but opposite edges of the bed surface. The bed the
mismatch situation has been considered to be happened when
the bed width is less than Elbow Span + 10 cm clearance.
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Hospital Bed Parameters Related to
Anthropometric Measurements
Bed Height: The bed height is the vertical distance from the floor
to the highest point on the seat of the bed. A mismatch of
popliteal and seat height was defined as any seat height that is
either >95% or
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Collected data from doctors and patients
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Collected data from doctors and patients
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Result obtained by using
Independent Test
1. H0= Problems are not related to
anthropometric factors
2. H1= Problems are related to
anthropometric factors
3. Level of significance, = 0.05, 0.014. Degree of freedom, = 12
5. 2actual= 144.154
6. 20.05, 12 = 21.026 > 2actual
7. 20.01, 12 = 26.217 > 2actual
8. Decision: H0is rejected.That means, problems are related to
anthropometric factors.
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Analytic Hierarchy Process (AHP)
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Result obtained by using Analytic
Hierarchy Process (AHP)
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Anthropometric Data
SL.No
Name
Stature
(cm)
Elbow span
(cm)
Poplited
Height (cm)
Vertical Grip
reach
(cm)
01
Md.Arif Uddin
170.20
89.00
41.40
202.30
02
Papon kumar paul
167.60
84.30
41.90
195.50
03
Faisal Rashed
167.70
93.00
43.00
207.60
04
Md.AR Rafiul Faisal
165.10
85.60
40.30
194.50
05
Md.Asaduzzaman
165.00
84.80
40.30
191.90
06
Md.Shahadat Hossain
165.10
85.00
43.30
197.10
07
Salim Mollah
170.20
87.80
45.30
203.10
08
Md.Shohel rana
170.20
91.10
41.50
207.10
09
Md.Idris Ali
167.60
82.50
41.80
202.00
10
Rifat alam munna
162.60
81.10
43.50
190.50
11
Md.Ariful Islam
171.00
92.90
44.40
205.40
12
Muradul Islam
167.70
91.40
42.80
200.80
13
Debashahi kumar roy
163.80
86.90
41.20
196.70
14
Md.Ahahsan Habib
165.00
81.00
44.60
195.50
15
Md.Sojauddla
174.90
84.40
44.80
209.20
16
Md.Imran Hossain
171.90
89.50
43.60
209.30
17
Ali Ahsan Bappy
179.50
93.30
44.00
206.50
18
Ahasanul Haque Tarif
177.50
87.80
44.50
206.50
19
Shahed Mahuud
177.60
89.00
43.40
214.90
20
Md.Nashir Uddin
165.10
86.80
44.40
198.70
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Mean and Varience
SL. ON Stature (cm) Elbow span(cm) Popliteal height
(cm)
Vertical grip
reach
(cm)
Mean 167.3141 88.33078 43.74369 201.8814
Standard
deviation
10.6542 3.8495 1.6215 14.2085
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Regression Analysis
Dependent variables(y)
Prediction equation
Elbow span
Y=0.850467x-52.4467
Popliteal height
Y= 33.39599+.0.05979x
Vertical grip reach Y=157.94156+02476x
Correlation analysis while taking independent variable x = stature
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Conclusion
Every patient, deserves a safe and comfortable sleeping and bed
environment. Hospital bed needed to design in such a way that
both the patient and health care workers feel comfort, safe and
convenience. Ergonomics or human factors are very important
for the design of hospital bed and other furniture. Our case studyshows the relationship of hospital bed with patient various
problems like back pain, blood circulation problem, fatigue,
sleep and comfort and what factors are responsible at most. This
study gives a better solution for Bangladeshi people to designhospital bed according to anthropometric data of this regional
people.