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fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Foster, M.
Languages: English
Types: Doctoral thesis
Subjects:
A review of the published work on pumps designed to assist a failing biological heart has been made and discusses the different types of pump presently on the market with the\ud characteristics of each. The materials used to make these pumps are also discussed, together with some of the methods of output control. The application to the patient is\ud described together with the advantages and disadvantages.\ud \ud A Tesla type pump appeared to offer an alternative solution to those problems listed above. This is not a new design but appeared to offer advantages if applied to the application of pumping blood from outside the body. One of these was that at a constant speed, the pump supplied constant fluid pressure irrespective of the delivery. It also appears that the pump can give fluid shear stress levels that are less than the amount that will seriously damage blood components.\ud \ud A prototype pump has been built and tested. The pump achieved the performance target delivery of 10 I/min at a differential pressure of 200 mm Hg. This was considered to\ud be greater than the average performance produced by existing blood pumps but the maximum performance that could be produced by the human heart under extreme conditions. The pump reached a maximum speed of about 4000 rev/min with a maximum power consumption of about 120 Watts.\ud \ud The results indicate that this type of pump is a potential blood pump in terms of the delivery and pressures achieved.\ud \ud The characteristic performance figures are within the envelope of published theoretical results.\ud \ud The pump tested here needs further development to improve the hydraulic performance. Recommendations are made for the direction of future work to improve the pump efficiency and flow patterns, biocompatibility and methods of production. Controls and power supply also need improvement.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • 10 IImin @200 mm Hg, Flow Vs Pressure Parameter, Inlet Valve Set 0 Rotor three, constant sp••d, 2500 to 4000 revlmln, .11 t••t fluid•.
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