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Ann Thorac Surg 2002;73:830-836
© 2002 The Society of Thoracic Surgeons
a Division of Cardiovascular Surgery, Mayo Clinic, Rochester, Minnesota, USA
b St. Jude Medical Cardiovascular Group, Inc, Minneapolis, Minnesota, USA
c Pathology Associated International, Frederick, Maryland, USA
Accepted for publication November 15, 2001.
* Address reprint requests to Dr Schaff, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
e-mail: schaff{at}mayo.edu
Presented at the Thirty-seventh Annual Meeting of The Society of Thoracic Surgeons, New Orleans, LA, Jan 29–31, 2001.
Background. A new stainless steel anastomosis device developed by St. Jude Medical Cardiovascular Group was studied in a canine model.
Methods. In 12 dogs, coronary saphenous vein grafts were made to the left anterior descending coronary artery and to the circumflex coronary artery; one anastomosis was completed with the St. Jude Medical stainless steel connector device, and the other with conventional suturing. A 30-day coronary angiogram was performed in surviving animals, and, after sacrifice, anastomoses were measured, examined grossly, and submitted for histologic study.
Results. All 12 animals survived the procedure, and 9 survived to sacrifice at 30 days. Comparing the connector grafts and sutured grafts, no significant differences were found between vessel diameters, intraoperative graft flows, graft patency, and histology. The average loading time for the connector was 8.5 minutes (range 4 to 16 minutes). Mean time for the 12 connector anastomoses was 3 minutes (range 2 to 5 minutes) compared with 8.4 minutes for suture (range 4 to 13 minutes).
Conclusions. The side-to-side stainless steel connector anastomotic device produces a secure anastomosis with minimal variability; compared with suture methods, it is expeditious and has comparable 30-day histology and angiographic results. It promises to be an important addition to the surgical armamentarium for the treatment of coronary artery disease.
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