PROBLEM TO BE SOLVED: To provide a medical apparatus stabilizing a slide direction of a plate clamp and inhibiting spattering of liquid flowing out from an opening end of a tube.SOLUTION: The medical apparatus includes: a tube 15 having an opening end 17 a plate clamp 22 formed with a through-hole 27 that has a wide-width part 27A being wider than an outside diameter of the tube 15 and a narrow-width part 27B being narrower than that and a holding member 21 for holding the tube 15 and the plate clamp 22. The holding member 21 includes a guide part 23 that is penetrated by the tube 15 inserted into the through-hole 27 and slidably holds the plate clamp 22 in the sliding direction, where the longitudinal direction of the plate clamp faces the slide direction crossing with the tube 15 and a cylindrical part 24 that protrudes from the guide part 23 in the direction of the tube 15 penetrating through the guide part 23 and holds the opening end 17 side of the tube 15.
