A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 1/36 (2006.01)
Patent
CA 2136516
An apparatus for trapping bubbles in blood flowing in a circuit, such as an extracorporeal circuit, includes a housing which defines a substantially vertical chamber. Blood is introduced into the chamber through a delivery port in a direction transverse to a longitudinal axis of the chamber. A deflector is positioned in the chamber adjacent to and spaced apart from the delivery port. The deflector deflects at least a portion of the blood into the chamber above the deflector. Thereafter, the blood is removed from the chamber out an exit port of the chamber. The deflection and redirection of blood within the chamber provides an opportunity for bubbles in the blood to separate from the blood in the chamber and also helps prevent the stagnation of blood in the chamber which can lead to clotting and separation of blood. A method of removing bubbles from blood flowing in a circuit involves introducing blood into a substantially vertical chamber at an angle substantially transverse to a longitudinal vertical axis of the chamber. At least a portion of the blood is deflected upward in the chamber to provide an opportunity for bubbles in the blood to separate from the blood. The blood is then removed from the chamber. An upper blood surface is maintained in the chamber above which bubbles are collected.
Cobe Laboratories Inc.
Robic
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