DEPTH ADJUSTABLE MEDICAL INSTRUMENT USING REFLECTION DISTANCE SENSOR AND METHOD FOR CONTROLLING THE SAME

摘要

The present invention relates to a depth control medical tool using a reflected light distance sensor and a control method thereof, capable of enabling a syringe needle to be inserted to an accurate depth based on distance information measured by light reflected from a bio boundary membrane. The present invention includes: a hand piece forming a syringe body; a syringe needle fixed to the hand piece to make exposed a tip inserted into a living body; a distance sensor optical fiber having a fixed distance from the tip of the syringe needle and attached to the syringe needle to measure a distance by the insertion of the syringe needle; a pressure part for fluid movement, controlling the movement of fluids and the inside of the living body through the syringe needle; and a distance sensor measurement part outputting a signal to measure a relative distance between an internal boundary membrane of the living body and the tip of the syringe needle in an external boundary membrane of the living body by using a tip of the optical fiber placed outside the external boundary membrane through the distance sensor optical fiber.