Objective To establish the valve homograft conduit model with profound hypothermia conservation in rabbits′ carotid artery.Methods Twenty mature Chinese albino rabbits served as receptors,and forty（one month old）as donators.Aorta with valve was taken and maintained with profound hypothermia,then transplanted at both carotid arteries of receptors.Valved aorta of receptors were taken out and the patency rate of blood vessel,the embolism and histology changes 28 days after of transplantation were observed.Results Seventeen receptors survived,85% of carotid artery pulsated well,blood streamed smoothly and with no formation of thrombus generally.Conclusion Rabbit carotis model is of less injury,and easy operation for its facial situs,functioning as a practical,stably reliable and easily replicable valved conduit transplantation model.

• ref