Yang C, Sun Y, Dong P, Wang H
Department of Thoracic and Cardiovascular Surgery, Beijing Heart, Lung and Blood Vessel Medical Center, China.
J Thorac Cardiovasc Surg. 1994 Jan;107(1):191-5.
A new sutureless intraluminal graft has been developed with a ring made of a titanium-nickel shape-memory alloy. The diameter of the ring can be reversibly reduced by compression in 4 degrees C normal saline solution and recovers its original shape in 38 degrees C physiologic saline solution during insertion in the aorta. The new graft was implanted in nine dogs and was evaluated histologically and angiographically at various intervals from 15 to 90 days. No complications, such as dislodgment, aortic rupture, stenosis, or aneurysmal dilation, were observed. The component of the shape-memory ring allows the graft to be introduced and secured in place easily. The function of this ring is better than that of the rigid ring.
一种新型无缝腔内移植物已被研发出来，其带有一个由钛镍形状记忆合金制成的环。在4摄氏度的生理盐水中通过压缩可使该环的直径可逆性减小，在植入主动脉过程中，于38摄氏度的生理盐水中它会恢复其原始形状。将这种新型移植物植入9只狗体内，并在15至90天的不同时间间隔进行组织学和血管造影评估。未观察到诸如移位、主动脉破裂、狭窄或动脉瘤扩张等并发症。形状记忆环的部件使移植物易于插入并固定到位。该环的功能优于刚性环。
