Fiber optic connection and method of measuring intravascular pressure using same

A method of measuring intravascular pressure comprising the steps of:

• (a) positioning a first optic fiber (4) in a first air channel, the first optic fiber leading to a sensor element in a farther end of a sensor-guide portion (2);
• (b) positioning a second optic fiber (8) in a second air channel in a connective portion (3), the second optic fiber (8) leading to an electronic unit;
• (c) connecting said first optic fiber and second optic fiber in a fiber optic connection (1) between said sensor-guide portion (2) and said connective portion (3);
• (d) closing said first optic fiber (4) and said second optic fiber (8) of said sensor-guide portion (2) in a fixed, light transmitting position;
• (e) forming an outwards pressure tight air channel (11) extending continuously from said electronic unit to said sensor element via said connection;
• (f) inserting the sensor-guide portion into a vessel;
• and
• (g) measuring intravascular pressure through said connection.

A method of measuring intravascular pressure, comprising the steps of:

• (a) connecting a sensor-guide portion (2), comprising a first optic fiber (4) leading to a sensory element in a farther end of said sensor-guide portion (2), positioned in a first air channel, and a connective portion (3), comprising a second optic fiber (8) leading to an electronic unit, positioned in a second air channel;
• (b) enclosing said first optic fiber (4) and said second optic fiber (8) of said sensor-guide portion (2) in a fixed, light transmitting position;
• (c) forming an outwards pressure tight air channel (11) around said first and second fibers, extending continuously from said electronic unit to said sensor element;
• (d) inserting said sensor-guide portion (2) in a vessel after forming said pressure tight air channel (11) between said sensor-guide portion (2) and said connective portion (3);
• and
• (e) calibrating said sensor element in vitro by applicating a plurality of different reference pressures in said pressure tight air channel.