Sensing device and method for determining aneurysmal pressure in a body cavity

摘要

A device for sensing aneurysmal pressure in a body cavity includes a housing (20) including at least one chamber (25) formed therein. A first fluid (26) is positioned in a first portion (27) of the chamber. A second fluid (28) is positioned in a second portion (29) of the chamber. A compressible fluid (32) is positioned in the second portion of the chamber. A divider (35) is positioned between the first and second fluids. A pressure membrane (38) is in communication with the first portion of the chamber. The aneurysmal pressure is transmitted through the membrane and the first fluid to position the divider within the chamber. A method for determining aneurysmal pressure in a body cavity includes deploying a sensing device including radiopaque substance adjacent an aneurysm. The radiopaque substance is moved within the device in response to the aneurysmal pressure. The sensing device is imaged and pressure and/or relative pressure is read directly. <IMAGE>