Abstract: A base anchoring structure fixes a base 3 of an apparatus body 2 to a floor F in position. The base is at a lower part of the apparatus body and has casters C to move the apparatus body along the floor. The base anchoring structure includes linear actuators 4 fixed to the base, to downwardly bias, with a uniform pressure provided by air A supplied to the linear actuators, their respective pistons 5 until lower ends of the pistons reach the floor and stopper units (7, 8, 10) to engage with the downwardly pushed pistons and stably maintain the downwardly pushed state of the pistons. The engagement of the stopper units with the pistons stably maintains the anchored state of the base. The plurality of actuator is easily operated only by supplying air thereto.

Abstract: An derivation method of a nail apparatus melanoma discrimination threshold includes a first step of assuming a color image of longitudinal melanonychia as three-dimensional vectors each composed of RGB parameter values of each pixel and finding an angle between each of the three-dimensional vectors and a reference vector, a second step of finding a probability of occurrence according to a frequency distribution of the angles found in the first step, and a third step of finding, according to the probability of occurrence found in the second step, a threshold for a parameter to discriminate whether the longitudinal melanonychia is malignant or benign.

Abstract: A spectroscopic measuring apparatus with monitoring capability includes a first optical path that extends from a measuring object through an optical system and a slit of a slit-mirror block to a spectroscope main body and a second optical path that extends from the measuring object through the optical system and a mirror face of the slit-mirror block to a two-dimensional photographing unit. The slit and spectroscope main body are integrated into a spectroscopic unit.

Abstract: A holding arm apparatus 1 is configured to connect upper and lower timing pulleys 5A and 6A of a vertical arm unit 4 to each other with a timing belt 15, to widen the range of rotation angle of a horizontal arm unit 5 and allow the position and angle of an endoscope 20 held at a front end of the horizontal arm unit 5 to be widely changed. The horizontal arm unit 5 and a counterweight 6 turn by the same angle, to maintain a weight balance by the counterweight 6. Using the timing belt 15 reduces the total weight and operation noise of the holding arm apparatus 1. Accordingly, the apparatus is appropriate for a medical front.

Abstract: Only a front end part 16 of a surgical microscope 15 is turned in a left-right direction X around a main axis S, so that an observation angle of a surgical site T is freely changed in the left-right direction. Even if the observation angle is changed, the orientation of eyepieces 22 is unchanged, and therefore, an operator does not need to bend his or her neck and no burden is imposed on the neck of the operator even if the operator must conduct an operation that takes a long time.

Abstract: An auxiliary arm attaching structure of a stand apparatus 1 includes a front member 3 that is attached to a support arm 2 of the stand apparatus and has a projection 6. The projection projects in a direction different from a longitudinal direction of the support arm and supports an auxiliary arm 8. Supported with the projection, the auxiliary arm is turnable so that an electronic image display unit 9 attached to a front end of the auxiliary arm is turnable to any position around a surgical microscope 4 supported with the front member.

Abstract: When the compression spring is compressed due to the relative displacement of the stopper which occurs in response to the tilt angle of the arm structure, the compression spring is compressed by the small relative displacement of the stopper over its entire body in the longitudinal direction, so that a repulsive force is obtained which varies little over the entire range of the tilt angle, enabling support of the heavy object in a stable condition.

Abstract: A surgical microscope system includes a camera 9 that is turnable around an optical axis K of the camera 9 to optionally select a photographing orientation. The camera 9 is able to pick up an electronic image of an affected part T in an orientation in which a main doctor sees the affected part T, or in an orientation in which an assistant, who is present at a different position from the main doctor, sees the affected part T, or in any other orientation. The electronic image picked up by the camera 9 in a selected orientation is stereoscopically observable with an electronic image display unit 2.

Abstract: A microdrape 10 covers a surgical microscope system 60 including a surgical microscope 61 and a pair of binoculars 62 independently supported by an arm structure 64. The microdrape 10 has an opening end 6 and a closed end opposite to the opening end 6. The microdrape 10 includes: a cylindrical bag shaped main body 10a having the opening end 6; a first cylindrical bag 1 connected to the main body, 10a wherein the first cylindrical bag 1 has a hood for covering a lens tube of an objective lens 61a of the surgical microscope 61 and projecting portions 9a, 9b for covering lens tubes of eyeglasses 61b of the surgical microscope 61; and a second cylindrical bag 2 connected to the main body 10a, where the second cylindrical bag 2 has projecting portions 9c, 9d for covering lens tubes of eyeglasses 62a of the binoculars 62. A slit 5 is formed between the first cylindrical bag 1 and the second cylindrical bag 2.

Abstract: A surgical microscope system includes a camera 20. The camera 20 includes CCDs 21 and a focusing mechanism (41, 42, 43). If an image displayed on an electronic image display unit 5 is unclear due to a focusing error, the focusing mechanism is operated to focus the image and make the image clearly visible. Without regard to a focusing operation conducted by a doctor D1 on a surgical microscope 4, an assistant D2 on the electronic image display unit is able to manipulate the focusing mechanism and observe clear images on the electronic image display unit.

Abstract: The surgical microscope system includes a first binocular microscope and a first display device. The first binocular microscope includes an objective lens, a first right ocular lens which provides a first image based on a light flux transmitted through the objective lens, and a first left ocular lens which provides a second image based on a light flux transmitted through the objective lens. The first display device can be disposed opposite to or in alignment with the first binocular microscope, and includes a first right-eye image display surface for displaying the first image and a first left-eye image display surface for displaying the second image. The first display device can be reversed about a horizontal axis extending in a direction along which the first right-eye image display surface and the first left-eye image display surface are located in alignment.

Abstract: An automatic balancing structure of a medical balancing stand has stoppers arranged on a turn plate. In a normal state, the stoppers are in contact with and hold a contact part of a lever so that the lever and turn plate follow a rotative motion of a lateral arm. If the lateral arm causes an imbalance, a strain occurs on the lever to which a strain sensor is attached. The strain sensor detects the strain and outputs a signal to an adjustment unit so as to cancel the imbalance of the lateral arm. The strain sensor helps downsizing the automatic balancing structure and making the balance adjustment easier.

Abstract: An automatic balancing structure of a medical balancing stand includes an elastic member arranged in each clearance C. In a normal state, a lever and a turn plate turn together through the elastic members, to follow a rotative movement of a lateral arm. When an imbalance occurs on the lateral arm, the lateral arm produces torque with which a contact part of the lever presses and deforms one of the elastic members to activate a corresponding one of switches S1 and S2. The activated switch outputs an imbalance detected signal to an adjustment unit, which resolves the imbalance. The switches S1 and S2 are simple to downsize the automatic balancing structure and are effective to carry out balance adjustment.

Abstract: An electronic image display apparatus has a casing. The casing incorporates objective optical systems and imaging optical systems to form primary images that are observed through eyepiece optical systems. With this configuration, the display apparatus is able to provide images that are observable naturally like images provided by a surgical microscope, thereby improving an observation performance and causing no fatigue on an observer even after a long time of observation.

Abstract: At a front end of the lateral arm of a surgical microscope apparatus, the apparatus has an intake port. A band is tied around the front end of the lateral arm so that a drape is drawn only to a surgical microscope. Drawing the drape to the surgical microscope results in clearing the field of vision of a surgeon. Part of the drape around the lateral arm and a longitudinal arm is not drawn, to cause no hindrance in operability of the surgical microscope. The lateral arm and the like are hollow to form an inner ventilating path without separately preparing ventilating tubes or the like for ventilation.

Abstract: A slit 9 having a predetermined length is formed in a mirror 8 and an illumination light L of illumination part 10 irradiates an observation area E in a manner of zero-angle illumination to an optical axis K. The illumination part is movable to form an oblique path of the illumination light L which passes through the slit 9. A shadow appears due to the oblique path of the illumination light L and it facilitates a stereoscopic observation.

Abstract: Even if a return beam from a work to be measured does not agree with the center of a two-piece sensor, a correction value is calculated according to a voltage difference between two sensors of the two-piece sensor if the voltage difference is within a neighborhood range. The correction value is added to an actual position of an objective lens in an up-down direction, to calculate a movement amount of the objective lens up to a focused state (a state in which the return beam agrees with the center of the two-piece sensor).

Abstract: An operation microscope includes: an ordinary light path that guides light from an observation target to an eyepiece; a first secondary light path branched off from the ordinary light path; a second secondary light path merging with the ordinary light path; an imaging unit that images the observation target using light from the first secondary path; a display unit that displays an image based on an image signal from the imaging unit toward the second secondary path; and a reflector provided at a branch point of the ordinary light path and the first secondary light path in such a manner as to be capable of pulling off the branch point, and that bends the ordinary light path by reflection. The first secondary light path extends from the branch point along an extension of the ordinary light path before being reflected.

Abstract: A spectroscopic measuring apparatus with monitoring capability includes a first optical path that extends from a measuring object through an optical system and a slit of a slit-mirror block to a spectroscope main body and a second optical path that extends from the measuring object through the optical system and a mirror face of the slit-mirror block to a two-dimensional photographing unit. The slit and spectroscope main body are integrated into a spectroscopic unit.

Abstract: An optical filter 11 is fixed in an optical path in a light generation unit 6 to cut out light in an infrared region. The optical filter 11 do not deviate from the optical path, and infallibly eliminate light in the infrared region which becomes heat radiation. The optical filter 11 cuts out light whose wavelength is longer than a threshold wavelength that is longer than 805 nm and shorter than 815 nm, and eliminates heat radiation in the infrared region, which includes a wavelength (approximately 825 nm) which is substantially a first peak P of the radiant intensity of the xenon lamp 10.