Autotransfusion device with twisted collection bag

Details Autotransfusion device with twisted collection bag Autotransfusion device with twisted collection bag

A - Human Necessities

61

M

128/80

A61M 1/10 (2006.01) A61M 1/02 (2006.01) A61M 1/00 (2006.01)

Patent

CA 1204037

AUTOTRANSFUSION DEVICE WITH TWISTED COLLECTION BAG Abstract of the Disclosure An autotransfusion device having a rigid cylindrical housing with an end wall, a movable piston located in the hous- ing, and a deformable collection bag attached between the end wall and the piston is disclosed. When the piston is moved to- wards the end wall, collapsing the collection bag, the piston is rotated to twist the collection bag and prevent the collection bag from being seized between the housing wall and the piston. The autotransfusion device also includes an automatic air purge unit and an auxiliary air purge unit which is used when the auto- matic air purge unit malfunctions. In order to facilitate the filling of the collection bag to capacity, a length to diameter ratio of 1.1 is preferred.

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