The reco instrument for the automatic anastomosis in aortic surgery

目的：研制主动脉与人工血管自动吻合器，实现主动脉手术的微创化。方法：将U形夹从该器械中推出，穿过人工血管和主动脉壁。然后将U形夹的尖端向内弯曲。沿着沿着人工移植物和主动脉壁的所有路径成功地重复该过程。测量了编织型涤纶人工血管与猪主动脉间器械吻合的持久张力，并与缝合吻合进行了比较。结果：器械性吻合器组吻合口张力（4.9- 5.4Kg）明显高于对照组（2.1- 2.5Kg）;结论：自制的主动脉与人工血管自动吻合器可有效减少主动脉瘤手术的创伤。

Objective : We developed the instrument for the automatic anastomosis between aorta and artificial graft to perform aortic surgery with less invasion. The effectiveness of this instrument was evaluated in this study.Methods : U shape clip is pushed from this instrument, and goes through the artificial graft and the aortic wall. Then the tip of the U shape clip is bended inside. This procedure is successfully repeated along all the way around the artificial graft and the aortic wall. The durable tension of the instrumental anastomoses between pig aorta and woven Dacron graft was measured, and that was compared with needle suture anastomosis. The amount of leaking blood from anastomosis under the pressure of 100 mmHg was evaluated.Results : The tension until detachment of the anastomoses was greater in instrumental anastomoses group (4.9-5.4 Kg) than that in control group (2.1-2.5 Kg). The amount of the leaking blood was 3ml/m in instrumental anastomoses group and 3ml/min in control group.Conclusion : The newly developed instrument for the automatic anastomosis between aorta and artificial graft can be effective on reducing the invasion of the aortic surgery in patients with aortic aneurysm.