A simple technique to prevent aortic rupture following implant of chronic flow probes

A number of investigators are currently using chronically inmplanted blood flow probes of one of several types in various species. Several years ago (early 1963) we developed a simple technique of protecting the ascendinig aorta of the dog from erosion and rupture folloring imiiplant of a chronic (epoxy encapsulated) flow probe (Medicon types "K" and "Q," and a similarly shaped permanent imiagnet probe of our own design). Since we nowv have had sufficient experience to indicate a life expectancy of more than a year, it was thought that other investigators might wish to employ the procedure where long-term imuplanit experiments are planned.