MICROVASCULAR ANASTOMOSIS OF INTERPOSITIONAL VEIN GRAFTS WITH SUTURESAND A NEW MECHANICAL DEVICE - A HISTOLOGIC AND SCANNING ELECTRON-MICROSCOPIC STUDY
S. Reinert et al., MICROVASCULAR ANASTOMOSIS OF INTERPOSITIONAL VEIN GRAFTS WITH SUTURESAND A NEW MECHANICAL DEVICE - A HISTOLOGIC AND SCANNING ELECTRON-MICROSCOPIC STUDY, International journal of oral and maxillofacial surgery, 23(6), 1994, pp. 434-436
In an experimental study, a new mechanical device for microvascular an
astomosis was compared with suture anastomosis. In 14 rabbits, seven e
nd-to-end and seven end-to-side anastomoses of the jugular vein to int
erpositional vein grafts were done with a ring-pin device and by the c
onventional suture method. There was no significant difference between
the patency rates of mechanical and suture anastomoses. The completio
n of mechanical anastomoses took one-third the time required for sutur
e anastomoses. After 10 days, histologic and scanning electron microsc
opic examination revealed an uneventful reparative process at the anas
tomotic site with media atrophy and a continuous endothelial layer. At
4 weeks, occasional foreign body giant cells were seen between the po
lyethylene rings and surrounding connective tissue. The study confirms
that the ring-pin device is safe and provides a faster way to do micr
ovascular anastomoses than by suturing.