*3.2.1 Indications*

For patients with high risks of atherosclerosis, the possibility of ascending aortosclerosis is increased, and the operation of aorta needs to be reduced or avoided. A strict aortic non-touch technique can most effectively reduce the occurrence of plaque embolism. This requires the use of an auxiliary device for proximal aortic anastomosis. The Heartstring proximal anastomotic system is adopted in CABG to

**Figure 3.** *The Heartstring device.*

maintain hemostasis during operation and to complete the proximal anastomotic operation without the use of arterial side wall clamp.
