Patent ID: 7785006

Claim:
A medical diagnostic apparatus comprising an X-ray generation unit ( 10 ), a first arm ( 14 ) moving the X-ray generation unit ( 10 ) forward and backward, a detector ( 11 ) facing the X-ray generation unit ( 10 ) and receiving an X-ray emitted from the X-ray generation unit ( 10 ), a second arm ( 20 ) connected to the detector unit ( 11 ), and a main body ( 15 ) including an elevator unit ( 12 ) connected with one end of each the first arm ( 14 ) and the second arm ( 20 ), a vertical drive motor ( 16 ) moving the elevator unit ( 12 ), a rotation drive motor ( 13 ) rotating the elevator unit ( 12 ), and an elevation rail mounted for the elevator unit ( 12 ) to move vertically therealong, wherein the second arm ( 20 ) comprises: a guide rod ( 23 ) connected to the main body ( 15 ); a drive motor ( 23 a ) rotating the guide rod ( 23 ); and a guide groove unit ( 22 ) including a guide rod hole ( 24 ) formed with a screw thread for screw-fitting with the guide rod ( 23 ) to insert therein the guide rod ( 23 ); wherein the second arm ( 20 ) further comprises a second guide plate ( 21 ) disposed on both sides of the guide rod ( 23 ), and a guide rail ( 26 ) additionally formed on an inside of the second guide plate ( 21 ), and the guide groove unit ( 22 ) further comprises a plurality of rollers ( 25 ) formed on both sides thereof to contact with the guide rail ( 26 ), and a guide rail groove ( 27 ) formed also on both sides thereof to insert the guide rail ( 26 ) therein.