Autotransfusion device
AssigneeSherwood Medical Company
InventorAlan B. Ranford
Life of this patent
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Abstract
An autotransfusion device for use with a chest drainage unit is disclosed which includes a collapsible blood collection bag assembly having slotted stiffener members and a holder for holding the stiffener members bowed outwardly and the bag expanded for collecting blood. The bag assembly is removable from the holder for infusing the collected blood into the patient. An inlet and a gas outlet are at the top of the bag, and a filter is arranged to filter blood from the inlet to a blood collection portion of the bag, but air from the inlet can flow to the gas outlet without flowing through the filter.
Claims18
A body fluid collection device comprising a collapsible bag assembly including a bag having a pair of opposed sidewalls and an inlet in fluid communication with the interior of said bag for receiving body fluid, and a pair of relatively stiff flexible members respectively connected to said sidewalls, said members having portions between the opposed side edges thereof bendable outwardly in opposite directions from each other to expand said bag in response to the application of a force tending to move said opposed side edges generally toward each other, each of said members having a pair of slots adjacent each of the opposite ends thereof, each of said slots having spaced opposed sidewalls, each pair slots extending inwarding from the opposed side edges of the member adjacent each of the opposite ends thereof.
An autotransfusion device comprising a collapsible blood collection and infusion bag having a pair of opposed pliable panels of sheet material sealed together, an inlet and a gas outlet connected at the upper end of the bag, a pair of resilient, flexible stiffener members of sheet material which is more rigid than said material of said panels connected to the outer surfaces of said panels in parallel relation with each other, each of said stiffener members having respectively at the upper and lower ends thereof a pair of slots with spaced sidewalls, the slots of each pair extending inwardly from the opposed sides of each of the stiffener member defining a tab portion at each of the upper and lower ends of each of the stiffener members connected respectively by relatively narrow flexbile necks to a central main portion of each of the stiffener members, and holder means for receiving said bag and said stiffener members sized to maintain a compressive force on said stiffener members to cause said stiffener members to be bowed outwardly from each other to cause said bag to be in expaned condition with each of said panels having different axes of symmetry for receiving blood, and means for connecting said gas outlet to a source of suction.
Dependencies are inferred from the claim text.