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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.