Abstract: The present invention provides a system including a stereoscopic endoscope having left and right image pickup units for picking up parallactic images of an object through objective lenses laterally arranged at a distance from each other and CCDs laterally arranged at a distance from each other. In the stereoscopic endoscope, the focal distance is variable by moving focusing lenses. A display control unit is constructed so as to mask image pickup areas in left and right images display in left and right display elements on the basis of information regarding the distance to an object, the image pickup areas being picked up-only by one of the left and right image pickup units. Thus, images corresponding to an area that is picked up in common by both the left and right image pickup units are displayed.

Abstract: The three-dimensional observation system of the present invention comprises an image picking-up part which has a parallax with respect to the object of observation and captures two images of the object of observation, an image display part which respectively displays the two images of the object of observation captured by the image picking-up part, and an optical system which is used to guide the two images of the object of observation displayed by the image display part to respective position in front of the left and right eyes of the observer facing the object of observation, such that the parallax direction of the image picking-up part and the parallax direction of the observer coincide, thus causing a three-dimensional image to be displayed.

Abstract: A surgical system according to the present invention comprises: a surgical instrument for medical treatment of an affected portion in the body cavity; an observation device for observing tissue in the body cavity; an image display device for displaying images taken by the observation device; and an indicating-point control device included in at least one of the surgical instrument and the observation device, for controlling the position of an indicating point superimposed on an image displayed on the image display device.

Abstract: A stereoscopic image observing apparatus includes a right-eye projector 1 and a left-eye projector 2 which illuminate projected light for right and left eyes with the parallax generated based on an image pick-up signal obtained from a stereoscopic endoscope 8, a Fresnel lens 17 which applies and reflects the lens operation with the positive polarity to the projected light of the illuminated images for the right and left eyes, and an optical shift element layer 16 having liquid crystal 20 and a double refraction plate 19 for changing and diffusing on time series the reflecting position of the reflected light of the images for the right and left eyes from the Fresnel lens 17.

Abstract: There is disclosed a living tissue harvesting apparatus according to one aspect of the present invention, comprising a sheath which can be inserted in a body through a cut skin portion, an endoscope inserted through the sheath, a cutting device which is disposed at the sheath and which can cut a living tissue, and a holder which is disposed at the sheath to hold a harvesting object tissue in the body and which includes a press discharge portion to press-discharge the harvesting object tissue in a direction detached from the cutting device, wherein the holder includes a hook portion to catch the living tissue in a position disposed opposite to the cutting device, and the cutting device and hook portion can move with respect to each other.

Abstract: There is disclosed a living tissue harvesting apparatus according to one aspect of the present invention, comprising a sheath which can be inserted in a body through a cut skin portion, an endoscope inserted through the sheath, a cutting device which is disposed at the sheath and which can cut a living tissue, and a holder which is disposed at the sheath to hold a harvesting object tissue in the body and which includes a press discharge portion to press-discharge the harvesting object tissue in a direction detached from the cutting device, wherein the holder includes a hook portion to catch the living tissue in a position disposed opposite to the cutting device, and the cutting device and hook portion can move with respect to each other.

Abstract: The present invention provides a system including a stereoscopic endoscope having left and right image pickup units for picking up parallactic images of an object through objective lenses laterally arranged at a distance from each other and CCDs laterally arranged at a distance from each other. In the stereoscopic endoscope, the focal distance is variable by moving focusing lenses. A display control unit is constructed so as to mask image pickup areas in left and right images display in left and right display elements on the basis of information regarding the distance to an object, the image pickup areas being picked up-only by one of the left and right image pickup units. Thus, images corresponding to an area that is picked up in common by both the left and right image pickup units are displayed.

Abstract: A surgical system according to the present invention comprises: a surgical instrument for medical treatment of an affected portion in the body cavity; an observation device for observing tissue in the body cavity; an image display device for displaying images taken by the observation device; and an indicating-point control device included in at least one of the surgical instrument and the observation device, for controlling the position of an indicating point superimposed on an image displayed on the image display device.

Abstract: The three-dimensional observation system of the present invention comprises an image picking-up part which has a parallax with respect to the object of observation and captures two images of the object of observation, an image display part which respectively displays the two images of the object of observation captured by the image picking-up part, and an optical system which is used to guide the two images of the object of observation displayed by the image display part to respective position in front of the left and right eyes of the observer facing the object of observation, such that the parallax direction of the image picking-up part and the parallax direction of the observer coincide, thus causing a three-dimensional image to be displayed.

Abstract: A stereoscopic image observing apparatus includes a right-eye projector 1 and a left-eye projector 2 which illuminate projected light for right and left eyes with the parallax generated based on an image pick-up signal obtained from a stereoscopic endoscope 8, a Fresnel lens 17 which applies and reflects the lens operation with the positive polarity to the projected light of the illuminated images for the right and left eyes, and an optical shift element layer 16 having liquid crystal 20 and a double refraction plate 19 for changing and diffusing on time series the reflecting position of the reflected light of the images for the right and left eyes from the Fresnel lens 17.

Abstract: An observation apparatus includes a housing, a pair of display devices capable of correspondingly displaying a pair of different images for stereoscopic observation obtained from a stereoscopic observation mechanism, an eyepiece portion having a pair of observation windows, a window portion formed having an opening through which an external area around the housing can be observed by means of the eyepiece portion, and a shutter which opens and closes the window portion. The display devices is located in the housing so as to be connected to the stereoscopic observation mechanism, through which an observation target region can be observed stereoscopically. The pair of observation windows of the eyepiece portion is attached to the housing, and images displayed individually on the display devices can be observed by left and right eyes through the observation windows, individually. The window portion and the shutter are attached to the housing.

Abstract: There is disclosed a living tissue harvesting apparatus according to one aspect of the present invention, comprising a sheath which can be inserted in a body through a cut skin portion, an endoscope inserted through the sheath, a cutting device which is disposed at the sheath and which can cut a living tissue, and a holder which is disposed at the sheath to hold a harvesting object tissue in the body and which includes a press discharge portion to press-discharge the harvesting object tissue in a direction detached from the cutting device, wherein the holder includes a hook portion to catch the living tissue in a position disposed opposite to the cutting device, and the cutting device and hook portion can move with respect to each other.