The utility model relates to a microtubule port expansion for removing kidney stones, which comprises a medical elastic microtubule and a medical balloon connecting rod, the medical elastic microtubule is a sterile microtubule, the front end is as thin as an injection needle, which can invade the human body, the microtubule diameter can be expanded elastically, the medical balloon connecting rod is a sterile gas ball and a sterile connecting rod, when the front end of the medical elastic microtubule contacts the kidney stones, the medical balloon connecting rod enters the microtubule. The balloon is inflated at the front of the microtubule to provide a space for doctors to remove kidney stones smoothly.一種微管端口擴張取出腎結石，包括有醫學彈性微管及醫學氣球連桿所組成，該醫學彈性微管為無菌微管，前端細如注射針頭，可以侵入人體，微管口徑可以彈性擴張，該醫學氣球連桿為無菌氣球與無菌連桿，當醫學彈性微管前端接觸腎結石，醫學氣球連桿進入微管，氣球於微管前端充氣，提供醫生順利取出腎結石之空間。
