Apparatus for making extracorporeal blood circulation available
The present invention relates to an apparatus for making extracorporeal blood circulation available, in particular a heart-lung machine, comprising a venous connection and an arterial connection, between which a blood reservoir, a blood pump and a bubble detector for the detection of air bubbles are provided, with, downstream of the bubble detector, an arterial line leading to the arterial connection via an arterial clamp and a bypass leading via a bypass clamp back into the blood reservoir which is connected to a pump extracting air from the blood reservoir. In addition, the present invention relates to a method of operating such an apparatus.
1. An apparatus for making extracorporeal blood circulation available comprising a venous connection and an arterial connection, between which a blood reservoir, a blood pump and a bubble detector for the detection of air bubbles are provided, with, downstream of the bubble detector, an arterial line leading to the arterial connection via an arterial clamp and a bypass leading via a bypass clamp back into the blood reservoir which is connected to a pump extracting air from the blood reservoir.
2. An apparatus in accordance with claim 1 , wherein at least one of an oxygenator and an arterial filter is provided between the blood pump and the bubble detector.
3. An apparatus in accordance with claim 1 , wherein blood-conducting components of the apparatus, in particular at least one of an oxygenator and an arterial filter, are connected to the blood reservoir via a venting line, with venting clamps being respectively provided between the blood-conducting components and the blood reservoir for the closing of the venting line.
4. An apparatus in accordance with claim 1 , wherein the blood pump is made as a centrifugal pump with a central inlet and a tangential outlet, with the tangential outlet facing downwardly when the apparatus is in an operating position.
5. An apparatus in accordance with claim 1 , wherein the pump extracting air from the blood reservoir is a roller pump.
6. An apparatus in accordance with claim 5 wherein the roller pump has a clamping function.
7. An apparatus in accordance with claim 1 , wherein an air container is arranged downstream of the pump extracting air from the blood reservoir.
8. An apparatus in accordance with claim 1 , wherein the blood reservoir is split into an inlet region and an outlet region by a membrane impermeable for air bubbles.
9. An apparatus in accordance with claim 1 , wherein means are provided for the monitoring of the filling level of the blood reservoir.
10. The apparatus of claim 1 wherein the blood reservoir comprises a membrane impermeable to air.
11. The apparatus of claim 1 wherein the blood reservoir comprises a blood level sensor.
12. The apparatus of claim 1 wherein the pump comprises a centrifugal pump.
13. The apparatus of claim 1 wherein the pump comprises an inlet arranged centrally at a pump head.
14. The apparatus of claim 1 wherein the pump comprises a centrifugal pump with a tangential outlet facing downwardly when the apparatus is in an operating position.
15. The apparatus of claim 1 further comprising an oxygenator connected to the fluid line between the blood reservoir and the arterial connection.
16. The apparatus of claim 15 further comprising a venting line connecting the oxygenator to the blood reservoir.
17. The apparatus of claim 1 further comprising an arterial filter connected to the fluid line between the blood reservoir and the arterial connection.
18. The apparatus of claim 16 further comprising a venting line connecting the arterial filter to the blood reservoir.
19. The apparatus of claim 1 further comprising an air extraction pump connected to the blood reservoir.
20. An apparatus for making extracorporeal blood circulation available comprising a venous connection and an arterial connection, between which a blood reservoir split into an inlet region and an outlet region by a membrane impermeable for air bubbles and having means for the monitoring of the filling level, a blood pump made as a centrifugal pump, an oxygenator, an arterial filter and a bubble detector for the detection of air bubbles are provided, with, downstream of the bubble detector, an arterial line leading to the arterial connection via an arterial clamp and a bypass leading via a bypass clamp back into the blood reservoir which is connected to a roller pump conveying air from the blood reservoir into an air container.
21. An apparatus for making extracorporeal blood circulation available comprising:
a fluid line connecting a venous connection to a arterial connection;
a blood reservoir connected to the fluid line between the venous connection and the arterial connection;
a pump connected to the fluid line between the blood reservoir and the arterial connection;
a bubble detector connected to the fluid line between the blood reservoir and the arterial connection;
a bypass line comprising a bypass clamp, a first end of the bypass line connected to the fluid line between the bubble detector and the arterial connection and a second end of the bypass line connected to the fluid line between the venous connection and the blood reservoir; and
an arterial clamp connected to the fluid line between the first end of the bypass line and the arterial connection.