A controllable vascular ring constrictor for large animals comprises an elastic hoop, an inflation air bag ring and an inflation air
pipe, the elastic hoop comprises an upper hoop and a lower hoop, an outer ring of the inflation air bag ring is fixed to the upper hoop, a central hole of the inflation air bag ring forms a coronary
artery compression area, and the inflation air
pipe is fixed to the lower hoop. The side, facing the lower hoop, of the
inflatable air bag ring is provided with a notch communicated with the coronary
artery compression area to form a passageway, after the upper hoop and the lower hoop are opened, the coronary
artery can enter the coronary artery compression area through the passageway, the size of the coronary artery compression area is reduced along with inflation of the
inflatable air bag ring, and controllable compression of the coronary artery in the coronary artery compression area is achieved. When the
inflatable air bag ring is in an uninflated state, the coronary artery compression area is larger than the outer
diameter of the coronary artery, the device is fixed to the set position of a coronary artery
system through the elastic hoop, meanwhile, the inflatable air bag ring and the
pressure sensor are matched,
controllability of
blood vessel ring contraction and
blood flow blocking is achieved, and therefore an acute and chronic
myocardial ischemia model can be built according to needs.