the progress of a endovascular aneurysm repair can be monitored by inserting a pressure transducer sensor using a catheter into the sac during endovascular aneurysm repair and then using a small , hand - held read out device to measure pressure easily , safely , inexpensively and accurately . in one aspect a sensor is introduced into the body by the steps of loading the sensor into a catheter , and deploying into the aneurysm sac . this invention also has other applications for measuring physical properties in patients or in other sites .