To establish the model of traumatic aneurysm with foreign body in canine carotid artery, and to provide an animal model for one-stop interventional treatment of soft-tissue foreign body with vascular injury.

Seven healthy male Beagles dogs aged about 2 years were randomly modeled on right carotid artery in 5 and unmodeled in 2. In the research group with 5 carotid arteries, local jugular vein about 15-20 mm in length was cut off and sewn into the anterior wall of the ipsilateral carotid artery with 6-0 suture. The curved suture needle was then worn through the vein and artery, and kept partially in them even in the artery cavity. The tissues in surgical area were sutured layer by layer after the artificial cavity between the vein and arterial walls pulsating protrusion without leakage from the stitched edge. Finally, selective common carotid artery digital subtraction angiography (DSA) was performed by percutaneous transfemoral artery to further confirm the aneurysm model. In control group with 9 carotid arteries, only soft tissues surrounding the common carotid artery were percutaneously injured using a needle without significant bleeding and hematoma. Digital radiographs and CT angiography of neck were performed before and after the modeling operation.

Five traumatic aneurysms with foreign body of broken needle were made successfully in canine common carotid artery, and the technical success rate of establishment of traumatic aneurysm with foreign body was 100%. DSA clearly showed the arterial rupture, aneurysm, broken needle, and mild vasospasm and stenosis of local parent artery, which showed poorly on CTA. No abnormal findings were shown in common carotid arteries in control group.

The canine model of foreign body within traumatic aneurysm was successfully constructed using the method of a residual broken needle breaking through the anastomotic vessel wall after a side-to-side anastomosis to the carotid artery wall with a piece of ipsilateral jugular vein.