Abstract: A method and device for removing gas from gas containing blood. A non-rotating cyclone eddy chamber has the blood circulating therein and centrifugal force separates the blood radially outward and the gas radially inward. The cyclone inlet comprises a blood inlet channel that extends in a helical circular form developed to narrow in funnel like manner in the direction of flow toward the cyclone eddy chamber to accelerate the blood flow entering that chamber tangentially. A gas outlet is arranged in the radially inner center of the cyclone eddy chamber path while the blood outlet is coaxial and outward of the gas outlet.

Abstract: The bubble trap is used in extracorporeal blood flow circuits of the type used for open heart surgery. The trap is placed in the external blood flow and it removes small micro bubbles from the blood prior to delivery to the body. The device accelerates the blood flow radially and the small bubbles migrate toward the center of the accelerated flow. These bubbles are concentrated at this location and the blood that contains the micro bubbles is extracted and recirculated before the degassed blood flow is returned to the body.

Abstract: A blood suction apparatus for aspirating blood from a patient is developed as a one-hand held instrument having a handgrip. A centrifuge chamber, shaped to narrow from its tangentially directed top blood inlet to its bottom blood outlet end, like a funnel. A gas outlet opening from a gas collection space above the chamber and to which a suction device can be connected. A blood outlet at the lower end of the centrifuge chamber with both outlets connectable to a source of suction. The orientations of the handgrip and of elements passing through the handgrip are disclosed.

Abstract: The invention concerns a method and apparatus for removing gas from blood, comprising drawing blood through a non-rotating centrifuge chamber, the chamber having an inlet above and an outlet below with the chamber narrowing like a funnel between the inlet and the outlet. The inlet is oriented for directing the flow tangentially into the blood inlet and around the centrifuge chamber. The outlet is connected to a suction source for drawing off blood without reversal of the direction of rotation of the stream of blood in the chamber. The blood is further directed in the direction of flow of blood obliquely downward into the centrifuge chamber with an upwardly open angle to the axis rotation that is less than 90.degree.. An additional chamber communicates with the centrifuge chamber above the blood inlet and defines a gas base that is larger in cross-section than the gas outlet for providing a gas base for separation of the gas and blood.

Abstract: A method and apparatus for removing air from blood which contains air. The air-containing blood is conducted in the form of a cyclone stream through a cyclone device, preferably drawn therethrough, so that centrifugal forces for the separation of the air from the blood are produced in the rotating cyclone stream.