224006161-Blood-Pump-fluid-mechanics.pdf - Blood pump[Type...

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Blood pump [Type the document subtitle] Application of fluid mechanics to blood pumps for humans UTS 5/31/2013 Steven Tran 11228184 Daniel Yip Hong Liang Victor Chang Leong
1 Contents 1. Introduction ............................................................................................................ 0 2. Development of Blood Pumps ................................. Error! Bookmark not defined. 2.1 The Heart, a Blood Pump ..................................................................................... 4 2.2 History of the blood pump ................................................................................... 5 3. Issues of Blood damage and blood clot ................................................................... 20 3.1 Blood clotting ..................................................................................................... 20 3.2 Dangers of blood clotting ................................................................................... 21 3.3 Ventricular Assist Devices and Blood Clots ...................................................... 21 3.4 Blood Damage ................................................................................................... 22 3.5 Mechanical Causes of Damage .......................................................................... 22 4. Comparison of key aspects pertaining to blood pumps of different designs and type Error! Bookmark not defined. 4.1Axial flow pump ................................................. Error! Bookmark not defined. 4.2 Centrifugal pump ............................................... Error! Bookmark not defined. 4.3 Peristaltic pmp ................................................... Error! Bookmark not defined. 4.4 Extracorporeal Pump………………………………………………………… 4.5 Ventricular assist device(VAD)………………………………………………. 5. Reliability ................................................................................................................. 18 5.1 Malfunction and reliability of the Heart ............................................................ 18 5.2 Heart Assistance Devices (Blood pumps) .......... Error! Bookmark not defined. 5.3 Reliability of the blood pumps .......................................................................... 19 6. Key Aspects in the Comparison of Blood pumps Vs Water pumps Error! Bookmark not defined. 6.1 Efficiency ............................................................................................................. 8 6.2 Shear stress ........................................................................................................... 9 6.3 Stagnation and Blood Clotting ........................................................................... 10 6.4 Blood turbulence ................................................................................................ 10
2 6.5 Cavitation ........................................................................................................... 11 7. The issues that are dealt with Blood pumps and their solution Error! Bookmark not defined. 7.1 Power Supply ..................................................................................................... 13 7.2 Flow rate & pressure .......................................................................................... 14 7.2.1 Solution……………………………………………………………………… 7.3 Biocompatibility 7.3.1 Solution 8. How fluids mechanics has been applied to help solve problems issues associated with blood pumps ................................................................. Error! Bookmark not defined. References .................................................................... Error! Bookmark not defined.
3 1. Introduction The human heart is a hollow muscle that pumps blood around body through blood vessels, the heart is the most central part of the body, without it we cannot live. Over the past 100 years there has been a significant increase in heart disease in society. It is because of this increase that has led to further research into alternatives and substitutes, in case the heart fails. The result is blood pumps. The heart is the only organ that has been a struggle to recreate artificially & there are still many people who are working on it to date. The blood pump is a direct copy of the human heart, which is an understandably complex muscle. The blood pump has taken almost 200 years to develop into the current mechanism it is today, but these devices are far from perfect & it is because of this, that the research into the blood pump continues, in hope that in the future it will be able to imitate the heart perfectly. Currently, devices on the market will have to be sufficient to those who need heart transplant, or currently undergoing open heart surgery.

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