| 摘要 |
The invention concerns a method and device for the selective perfusion of fluids through blood vessels, controlled by the pressure in the blood vessel. The invention particularly concerns the aspiration of a fluid out of and retroinfusion of the fluid into veins, in particular coronary veins, controlled by the pressure in the vein, and the perfusion of fluids through arteries, in particular coronary arteries, controlled by the pressure in the artery. The retroinfusate is pumped into the blood vessel (200) through tubing (60) which is open at the proximal end and can be inserted into a vein or artery (200) of the patient. For retroinfusion from veins, the tubing (60) is connected to a suction device (90) for blood or retroinfusate from the patient's vein (200). A control unit (10) derives commands from ECG signals to synchronize the pumping and aspiration intervals with the patient's heart cycle. During the pumping phases, the intravenous or intra-arterial pressure is measured, and the control unit (10) maintains the pressure inside the blood vessel as constant as possible at a given level during the intervals between pumping by means of a flow regulator (30). |
