Balloon dilatation catheter with measuring function

The utility model discloses a balloon dilatation catheter with a measuring function, which comprises a guide wire (110) guided to a defect position (200) of a heart; the catheter part (120) is provided with a guide wire cavity (126) and a filling cavity (125) which are independent from each other in the length direction (L) of the catheter part (120), a first end (121) and a second end (122) are formed at the two ends of the catheter part (120) respectively, the guide wire (110) penetrates into the guide wire cavity (126) from the first end (121) and penetrates out of the guide wire cavity (126) from the second end (122), and the first end (121) of the filling cavity (125) is communicated with a contrast agent; the balloon part (130) is connected to the peripheral wall of the catheter part (120) in a wrapping mode and communicated with the filling cavity (125), and the balloon part (130) can move between a volume expansion position (KZ) and a volume reduction retraction position (HS) in a switching mode. 本实用新