PROBLEM TO BE SOLVED: To provide a medical support device by which an operator can concentrate on a treatment and an operation, medical equipment can always be visually recognized regardless of its position, and, furthermore, the medical equipment can be displayed in an image on a display, without generating almost any time lag.SOLUTION: The medical support device includes: a marker MK for AR recognition provided in an operation field of a patient including a tumor F as an object region for a surgical treatment a camera 20 for photographing the operation field together with the marker MK for AR recognition a display 30 for displaying an image being taken by the camera 20 and an AR image processing device 40 for displaying three-dimensional position information about the tumor F on the image being taken by the camera 20, which is displayed on the display 30, in a superimposed manner based on a position and a posture of the marker MK for AR recognition being photographed.COPYRIGHT: (C)2014,JPO&INPIT【課題】術者が治療や手術に集中でき、また、医療器具をその位置にかかわらず常に視認することができ、さらに、ディスプレイ上の映像に、ほとんどタイムラグが発生することなく医療器具を表示することが可能な医療支援装置を提供する。【解決手段】外科処置対象部位としての腫瘍Fを含む患者の術野に設けられたAR認識用マーカMKと、術野をAR認識用マーカMKとともに撮影するカメラ20と、カメラ20で撮影中の映像を表示するディスプレイ30と、ディスプレイ30上に表示されるカメラ20が撮影中の映像に、腫瘍Fについての3次元的位置情報を、撮影中のAR認識用マーカMKの位置及び姿勢に基づいて重畳して表示するAR画像処理装置40とを備える。【選択図】図1