Surgery – Truss – Perineal
Patent
1984-08-29
1986-12-09
Pellegrino, Stephen C.
Surgery
Truss
Perineal
422 45, 128DIG12, 604131, 604151, 604 52, 604 4, 417 92, 623 3, A61M 103
Patent
active
046274197
ABSTRACT:
A blood pump apparatus and method for pumping blood and pressure treating blood for minimizing hemolysis, platelet degradation, microthrombus and bubble formation. A blood pump apparatus for pumping and pressure treating blood comprising a flaccid chamber having an inlet for accepting fluid and an outlet for expelling fluid, a pressure housing associated with the flaccid chamber for applying pressure isotropically to dissolve or crush gaseous bubbles in the blood, an inert, heavier than blood, immiscible fluid acceptable in said flaccid chamber for displacing blood from said flaccid chamber and for drawing blood into said flaccid chamber, means for displacing said flaccid chamber and a hydraulic system and associated valves for controlling the flow of the inert fluid. A method for pumping and pressure treating blood comprising the steps of pumping an inert, heavier than blood, immiscible fluid into a flaccid chamber, inverting the flaccid chamber to position the chamber outlet below the chamber inlet for the fluid to and egrass the flaccid chamber thereby causing the blood to ingress the flaccid chamber, isotropically applying sufficient pressure for a sufficient time to dissolve or crush gaseous bubbles in the blood, ceasing the application of the pressure to the flaccid chamber, inverting the flaccid chamber to position the chamber inlet below the chamber outlet and pumping the inert fluid into the flaccid chamber thereby purging the blood from the flaccid chamber.
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Pellegrino Stephen C.
Rooney Mark
The Board of Regents, The University of Texas
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