Extra-aortic ballon eounterpulsation type heart chamber auxiliary pump
A ventricular assist and aortic technology, applied in the field of medical devices, can solve the problems of reducing the load, improving the impact of coronary artery blood supply, uncertainty in curative effect, and vascular distortion, so as to benefit heart function, reduce ejection resistance, and improve blood circulation. effect for improvement
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[0034] Experimental materials: mixed-breed domestic dogs, weighing between 30 and 42 kg, 1 female dog and 3 male dogs.
[0035] Experimental method: Place the domestic dog in a supine position, open the chest in the middle, cut the pericardium longitudinally, insert a 22# arterial cannula at the root of the ascending aorta, and insert an arterial pressure measuring needle in the right innominate artery. External balloon counterpulsation ventricular assist pump (80ml) is placed and connected to the aortic cannula, with a 10mm diameter tube in the middle, 15cm long, driven by a Berlin Heart artificial heart drive device, with a frequency of 75 beats / min, recorded before each counterpulsation Basal heart rate, basal blood pressure, heart rate and blood pressure were recorded again after counterpulsation for 5 minutes, rested for 15 minutes and counterpulsed again. The values were taken 5 times for each animal, and 20 times for the 4 dogs, and the paired analysis (t test) was pe...
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