Patent ID: 8251893
Filing Date: 2012-08-28
Classification: A61B,G06T

Abstract:
1. A device for displaying assistance information for surgical operation comprising: an endoscope that is inserted into the internal parts of a patient and which picks up an image of the internal parts; a patient shape acquiring means for acquiring information indicative of a three-dimensional shape of a surface of the internal parts of the patient into whom the endoscope is inserted and an external surface of the patient on a first coordinate axis; a surface image pickup means for picking up an image of the external surface of the patient when the endoscope is inserted into the patient; a surface shape calculating means for calculating information indicative of a three-dimensional shape of an external surface of the patient on a second coordinate axis from the image of the external surface of the patient picked up by the surface image pickup means; a coordinate axis matching means for matching the first coordinate axis and the second coordinate axis by matching the information indicative of the three-dimensional shape of the external surface of the patient acquired by the patient shape acquiring means and the information indicative of the three-dimensional shape of the external surface of the patient calculated by the surface shape calculating means, thereby enabling processing of the information indicative of the three-dimensional shape of the patient acquired by the patient shape acquiring means and the information indicative of the three-dimensional shape of the patient calculated by the surface shape calculating means on a same coordinate axis; an endoscope optical axis calculating means for calculating a ray indicative of an optical axis in the image pickup direction of the endoscope on the second coordinate axis matched with the first coordinate axis by the coordinate axis matching means from the surface image picked up by the surface image pickup means; an intersection calculating means for calculating an intersection of the ray indicative of the optical axis in the image pickup direction of the endoscope calculated by the endoscope optical axis calculating means and the surface of the internal parts of the patient relating to the information indicative of the three-dimensional shape acquired by the patient shape acquiring means; and an outputting means for outputting the information indicative of the intersection calculated by the intersection calculating means after overlapping the information on the information indicative of the surface of the internal parts of the patient acquired by the patient shape acquiring means.