Patent ID: 6019729
Filing Date: 2000-02-01
Classification: A61B

Abstract:
A sensor mechanism-equipped catheter comprising:a catheter tube; anda sensor portion including a pressure-receiving portion disposed at a distal end of the catheter tube, a pressure-sensing portion, an outer tube holding the pressure-receiving portion at a distal end side of the outer tube, and an inner tube supporting the pressure-sensing portion at an end side of the inner tube, the inner tube being fitted into the outer tube, the sensor portion further including, a pressure-transmitting medium that fills a space between the pressure-receiving portion and the pressure-sensing portion, the space being formed within the outer tube, and a pressure barrier wall that prevents the pressure-transmitting medium from flowing toward the catheter tube,wherein the sensor portion is provided as a unit separate from the catheter tube and is mounted at the distal end of the catheter tube, and at least one of the outer tube and inner tube has an irregular surface that is formed in a joint portion thereof fittable to the distal end of the catheter tube.