bp simulator
TRANSCRIPT
Arm Simulator for Blood Pressure MeasurementM. Tech. Project First Stage Seminar
Pushpa GothwalSupervisor: Prof. P. C. Pandey
Dept. Electrical Engineering, IIT Bombay
October 2010
[email protected] 2/18
Presentation overview
1. Introduction
2. Blood pressure measurement method
3. Blood pressure simulator and their categorization
4. Block diagram of blood pressure simulator
5. Summary and future work
1. Introduction
2. Blood pressure measurement method
3. Blood pressure simulator and their categorization
4. Block diagram of blood pressure simulator
5. Summary and future work
[email protected] 3/18
1.Introduction
Arm simulator: Device for simulating the behavior of arm for
blood pressure (BP) measurement using Korotkoff sound as well
as oscillometric method.
Need of simulator
● Testing and calibrating the BP meter
● Teaching health care professionals
Aim: Design of low cost microcontroller based arm simulator for BP
measurement.
Arm simulator: Device for simulating the behavior of arm for
blood pressure (BP) measurement using Korotkoff sound as well
as oscillometric method.
Need of simulator
● Testing and calibrating the BP meter
● Teaching health care professionals
Aim: Design of low cost microcontroller based arm simulator for BP
measurement.
[email protected] 4/18
1. Introduction
Blood pressure measurement methods
3. Blood pressure simulator and their categorizations
4. Block diagram of blood pressure simulator
5. Summary and future work
1. Introduction
Blood pressure measurement methods
3. Blood pressure simulator and their categorizations
4. Block diagram of blood pressure simulator
5. Summary and future work
[email protected] 5/18
1. Invasive method(Direct)
Catheterization
2. Noninvasive method (Indirect)● Auscultation method
● Oscillometric method
● Ultrasonic method
● Tonometry
1. Invasive method(Direct)
Catheterization
2. Noninvasive method (Indirect)● Auscultation method
● Oscillometric method
● Ultrasonic method
● Tonometry
1. Introduction
2. Blood pressure measurement method
Blood pressure simulator and their categorizations
4. Block diagram of blood pressure simulator
5. Summary and future work
1. Introduction
2. Blood pressure measurement method
Blood pressure simulator and their categorizations
4. Block diagram of blood pressure simulator
5. Summary and future work
6/18
[email protected] 7/18
Simulator is a device which simulating the pressure
readings for testing the BP instrument.
They can be categorized as:
● Limb Simulator
● Waveform simulator
Simulator is a device which simulating the pressure
readings for testing the BP instrument.
They can be categorized as:
● Limb Simulator
● Waveform simulator
[email protected] 8/18
1. Limb simulatorIt models the artificial arm(limb). It will be in the form of cylinder and the
transducer kept between the cuff and cylinder, which converts pressure
variation to voltage.
1. Limb simulatorIt models the artificial arm(limb). It will be in the form of cylinder and the
transducer kept between the cuff and cylinder, which converts pressure
variation to voltage.
Adapted from [8]
[email protected] 9/18
2. Waveform Simulator
It simulate the oscillometric pressure pulses.
2. Waveform Simulator
It simulate the oscillometric pressure pulses.
Adapted from [8]
1. Introduction
2. Blood pressure simulator and their categorization
3. Blood pressure measurement method
Block diagram of blood pressure simulator
5. Summary and future work
10/18
Cuff pressure sensor
SP DP MAP
K-soundHeartbeat generator
K-sound Generation
Amplitude calculator
Block diagram of Arm simulator
11/18
Hardware block of simulator
Pressure sensor
Micro-controller
LCDKey-pad
DAC out
Pulses
ADC in
12/18
\
28 Pin PIC 16F1936 microcontroller is used for simulator circuit with 2x2 keypad .1 key - Increment2 key - Decrement 3 key - Right4 key - LeftParameters selected by keypad are:Systolic pressure (SP)Diastolic pressure (DP)Beat rate (BR)Pulse volume (PV)Arrhythmia (AR)
LCD and Keypad interfacing with microcontroller
13/18
[email protected] 14/18
1. Introduction
2. Blood pressure simulator and their categorization
3. Blood pressure Measurement method
4. Block diagram of blood pressure simulator
Summary and Future work
1. Introduction
2. Blood pressure simulator and their categorization
3. Blood pressure Measurement method
4. Block diagram of blood pressure simulator
Summary and Future work
Summary of work done
Literature review & study of arm simulator for blood pressure
measurement.
Designed hardware simulator in which user can select the specified
parameter and change the parameter value.
Testing purpose output of pressure sensor is simulated by
potentiometer.
15/18
[email protected] 16/18
Development of the low cost arm simulator for BP measurement,
which simulate behavior of arm under different cardiovascular
condition.
Future work
REFERENCES[1] J. G. Webster,”Blood pressure and sound,” Medical Instrumentation Application and
Design, 2nd ed., Boston, USA: Houghton Mifflin company, 1992, pp. 394-401.[2] C. Guyton,” Physics of blood, blood flow, and pressure: Hemodynamics,” Textbook of
Medical Physiology, 7th ed., Philadelphia: saunders, 1986, pp. 206-209.[3] Handbook of Biomedical Instrumentation, 2nd ed., Tata McGraw Hill, New Delhi, 2009, pp.
218-227.[4] K. Sembulingam and P. Sembulingam,” Cardiovascular system,” Essential of Medial
Physiology, 5th ed., New Delhi: Jaypee, 2010, pp. 500-504.[5] J. J. Carr and J. M. Brown, “Physiological pressure and other cardiovascular
measurement,” Introduction to Biomedical Equipment Technology, 4th ed., Delhi: Pearson Education, 2001, pp.234-245.
[6] W.Glover and R. Medero,”Arm Simulator for an Ossilometric blood pressure monitor,” U.S. Patent 4,464,123, August 7, 1984.
[7] K. Ruiter and W. W. Ruiter,”Compact Ossilometric blood pressure simulator,” U.S. Patent apl. 20100076713, 30 June, 2008.
[8] G.Gersak, A. Zemva, and J. Drnovsek. (2009, October) A procedure for evaluation of non-invasive blood pressure simulators. Med Biol. Eng Comp.[online].47(12), pp.1221-1228,Available: http://www.springerlink.com/content/351052r33660n551/fulltext.pdf.
[1] J. G. Webster,”Blood pressure and sound,” Medical Instrumentation Application and Design, 2nd ed., Boston, USA: Houghton Mifflin company, 1992, pp. 394-401.
[2] C. Guyton,” Physics of blood, blood flow, and pressure: Hemodynamics,” Textbook of Medical Physiology, 7th ed., Philadelphia: saunders, 1986, pp. 206-209.
[3] Handbook of Biomedical Instrumentation, 2nd ed., Tata McGraw Hill, New Delhi, 2009, pp. 218-227.
[4] K. Sembulingam and P. Sembulingam,” Cardiovascular system,” Essential of Medial Physiology, 5th ed., New Delhi: Jaypee, 2010, pp. 500-504.
[5] J. J. Carr and J. M. Brown, “Physiological pressure and other cardiovascular measurement,” Introduction to Biomedical Equipment Technology, 4th ed., Delhi: Pearson Education, 2001, pp.234-245.
[6] W.Glover and R. Medero,”Arm Simulator for an Ossilometric blood pressure monitor,” U.S. Patent 4,464,123, August 7, 1984.
[7] K. Ruiter and W. W. Ruiter,”Compact Ossilometric blood pressure simulator,” U.S. Patent apl. 20100076713, 30 June, 2008.
[8] G.Gersak, A. Zemva, and J. Drnovsek. (2009, October) A procedure for evaluation of non-invasive blood pressure simulators. Med Biol. Eng Comp.[online].47(12), pp.1221-1228,Available: http://www.springerlink.com/content/351052r33660n551/fulltext.pdf.
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Indirect MeasurementAuscultatory method- The auscultatory technique is based on the sounds caused by the blood flow.
Indirect MeasurementAuscultatory method- The auscultatory technique is based on the sounds caused by the blood flow.
Adapted from [5]
Indirect MeasurementOscillometric method
Indirect MeasurementOscillometric method
Adapted from [5]
Indirect MeasurementUltrasonic method- It detects motion of blood vessel for BP measurement.
Indirect MeasurementUltrasonic method- It detects motion of blood vessel for BP measurement.
Adapted from [5]
Indirect MeasurementTonometry method
Indirect MeasurementTonometry method
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Adapted from [5]