Surgery – Blood drawn and replaced or treated and returned to body
Patent
1985-09-24
1986-12-23
Truluck, Dalton L.
Surgery
Blood drawn and replaced or treated and returned to body
604317, A61M 103
Patent
active
046310509
ABSTRACT:
An autotransfusion system for salvaging, washing, and concentrating blood and returning the blood to a patient during surgery. The system comprises both a filtration unit and an ultrafiltration unit. The ultrafiltration unit is configured so as to communicate with the filtration unit, and both the filtration unit and the ultrafiltration unit are provided with a suitable conduit for conveying blood back to a patient. The ultrafiltration unit is divided into two chambers by a semipermeable membrane, the membrane being selected so as to permit fluid to pass therethrough, while preventing the passage of blood cells and other formed elements.
A mixture of healthy blood cells, fluid, and particulate debris is salvaged from an operative field of a patient. The blood mixture is filtered in the filtration unit and can then be immediately returned to the patient, if needed. Alternatively, the filtered mixture is conveyed to the ultrafiltration unit where a portion of the fluid is removed from the mixture and wherein the healthy blood cells may be washed by the addition of a washing solution. The washed and concentrated blood cells are then returned to the patient through a suitable return line.
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Cooley Denton A.
Reed Charles C.
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