The ornamental design for an X-ray device for medical treatment, as shown and described.
1. X-ray device for medical treatment
1.1 : Front
1.2 : Back
1.3 :Top
1.4 : Bottom
1.5 : Left
1.6 : Right
1.7 : Perspective
1.8 : Perspective
1.9 : Enlarged partial view of a portion defined by arrows 1.9 of reproduction 1.8
The dash-dotted broken lines define the bounds of the claimed design; the evenly spaced broken lines show an X-ray device for medical treatment; all broken lines form no part of the claimed design.