Orthopedic autotransfusion system
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United States of America Patent
Stats
-
Jan 18, 1994
Grant Date -
N/A
app pub date -
Dec 19, 1991
filing date -
Dec 19, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The following disclosure comprises a medical autotransfusion and blood drainage reservoir for withdrawing blood from the site of an operation under vacuum. A walled reservoir is connected to the operation site and a vacuum is drawn therein to draw fluids from the operation site. Vacuum is provided by a piston pump connected to check valves. The check valves allow for movement of the piston pump in one direction to discharge air therefrom, and in the other direction to withdraw air from the reservoir. Alternatively a spring driven bellows can be used to draw a vacuum with attendant check valves. The inlet of blood flow is through a filter. Blood is then capable of flowing outwardly to be reinfused by autotransfusion or reinfusion at a later time. Vacuum indication means and bleed off valves are included for maintenance of a proper vacuum.
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