IN VITRO SIMULATION RESEARCH ON THE HOOP STRESS OF MYOCARDIAL BRIDGE — CORONARY ARTERY

Abstract

An analog device which can simulate myocardium bridge oppresses mural coronary artery is designed. The device can be used to research the dynamic changes of the proximal and distal hoop stresses. Meanwhile, the independent regulation of the hoop stresses is realized. The “myocardial bridge — coronary artery” analog device is built to adjust the external pressure of the simulated coronary artery and the oppression level of the myocardial bridge and to record the changes of the hoop stresses. The In vitro simulation experiment indicate that the anomaly of hoop stress mainly occurs in the proximal end. As the oppression level increases, the mean proximal hoop stress and the oscillatory value (maximum-minimum) increase obviously. The “myocardial bridge — coronary artery” analog device can provide a method to study the influence of the hoop stress on the mural coronary artery in vitro.

Keywords

• mural coronary artery, myocardial bridge, hemodynamic, hoop stress