Novel magnetic compression technique for establishment of a canine model of tracheoesophageal fistula

Figure 2 Study procedures. A: Normal anatomy of the trachea and esophagus in the beagle; B: The daughter magnet was inserted into the trachea and advanced to the target location using the transmission magnet and the guide wire; C: The anchor magnet was placed on the neck of the animal over the trachea to fix the daughter magnet in its target location; D: The guide wire and transmission magnet were withdrawn from the trachea; E: The parent magnet was inserted into the cervical esophagus and advanced to the target location using the transmission magnet and the guide wire; F: The parent magnet and daughter magnet were attracted to each other by magnetic force; G: The guide wire and transmission magnet were withdrawn from the esophagus, and the anchor magnet was removed; H: 4-6 d later, the necrotic tissue between the two magnets had been shed and the parent magnet and daughter magnet had detached from the target location. The tracheoesophageal fistula was formed.