Autotransfusion membrane system with means for providing reverse

Details Autotransfusion membrane system with means for providing reverse Autotransfusion membrane system with means for providing reverse

1991-07-16

1993-06-01

Green, Randall L.

Surgery

Blood drawn and replaced or treated and returned to body

604 6, 422 44, A61M 3700, A61M 114

Patent

active

052155196

ABSTRACT:
An apparatus for recycling autologous blood from a patient for reinfusion back to the patient comprising suction means, means for admixing aspirated blood with a washing fluid, filtering means for filtering the admixture through an emboli filter, monitoring means for measuring the blood component levels or hematocrit in the filtered blood, filtration means for removing excess fluid and particulates from the blood, and reinfusion means is disclosed. The apparatus operates in three different modes--idling, filtration and reinfusion--in response to specified conditions. Embodiments for use during surgery for on-line purification and reinfusion on a real time basis are disclosed along with embodiments for use postsurgically when the wound site is closed. Means for performing reverse filtration in the membrane filter are also included for maintaining a consistent level of filtration through the membrane filter.

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