Abstract: A surgical microscope apparatus has a discharge pump unit that is attached to a rear arm of a parallel linkage mechanism and is exposed to an outside. The discharge pump unit, therefore, is easy to remove from a stand body when repairing or maintaining the same. Namely, the repair or maintenance of the discharge pump unit is easy to carry out. The discharge pump unit is not present inside a horizontal arm, and therefore, never increases the weight of the horizontal arm.

Abstract: A stand apparatus for a surgical microscope includes a stand body and a parallel linkage. The parallel linkage is rotatably attached to the stand body by attaching a lower-end joint thereof instead of a vertical intermediate part thereof to the stand body. When the parallel linkage is tilted frontward, no part of the parallel linkage protrudes rearward. Weight balance of the frontward tilted parallel linkage is maintained by, instead of a counterweight, a compression spring arranged along a rear sub-arm.

Abstract: An electromagnetic valve system for carrying out a compressed air supply to and evacuation from a plurality of air chambers of massage instruments of a pneumatic massage device includes a plurality of first electromagnetic valves each to be connected to a corresponding one of the air chambers; a second electromagnetic valve including a first aperture which communicates with external air; and a plurality of first check valves each within a header in an intermediate location between the second electromagnetic valve and a corresponding one of the air chambers with a connection tube therebetween, the first check valves allowing air to pass from the air chambers toward the second electromagnetic valve only when air pressure on a second electromagnetic valve side is lower than air pressure on an air chamber side.

Abstract: An induced air discharging unit includes: a jet flow generator configured to discharge supply air fed from outside, the jet flow generator discharging the supply air as a jet flow of air; an air inducer configured to allow air of an air-conditioning target space to be induced by an inducing effect of the jet flow of air discharged from the jet flow generator; an air mixer configured to discharge mixed air of the jet flow of air from the jet flow generator and the air induced by the air inducer to the air-conditioning target space, and radiate heat of the mixed air to the air-conditioning target space; and an air purifier configured to produce a purifying substance that purifies a purification target substance by chemical reaction, and blow out the purifying substance to the air-conditioning target space.

Abstract: Provided is a motor-driven screwdriver configured such that the upper limit value of transmittable rotational driving force differs between forward and backward rotation. The motor-driven screwdriver has a bit holder and a rotational driving force transmission device for transmitting rotational driving force to the bit holder. The rotational driving force transmission device has a driving member, a driven member having through-holes, power transmission members held in the through-holes, respectively, and an urging member urging the power transmission members inward. Each through-hole is provided such that a through-hole center axis passing through a center between a forward rotation guide surface and backward rotation guide surface of the through-hole does not intersect a rotation center axis, whereby the force with which the power transmission member is pushed radially outward is made to differ between forward and backward rotation.

Abstract: A surgical microscope has an upper face provided with a light beam outlet. An assistant scope is mounted on the light beam outlet, and is rotatable in a horizontal plane so as to direct in any direction in the plane.

Abstract: A surgical microscope system includes a surgical microscope. In the surgical microscope, variable power optical systems are arranged horizontally to fold optical paths, thereby reducing a vertical size between eyepieces of the surgical microscope and a lower end of the same and expanding a working space under the surgical microscope. A camera is attached to an upper part of the surgical microscope to free a side face of the surgical microscope so that an accessory such as a fluorescent camera is attached to the side face.

Abstract: A medical stand apparatus includes a cylindrical lower arm that accommodates an upper arm divided into sections, so that only the lower arm is visible from the outside and so that a drape can tightly be fastened to the lower arm. The upper arm sections are connected to each other through a shaft that is guided along an arc groove of a bracket. This configuration is beneficial to reduce a diameter of the lower arm when the upper and lower arms are curved.

Abstract: An eyepiece structure for a surgical microscope includes an inner barrel, an intermediate barrel, and outer barrels. When the outer barrels are rotated, a protrusion of the inner barrel is guided along a spiral groove of the outer barrel and is moved back and forth along an optical axis. The protrusion is guided through a straight hole of the intermediate barrel that is not rotatable, and therefore, the inner barrel moves along the optical axis without rotating around the optical axis. An astigmatic lens is added to the inner barrel that is nonrotatable, to enable a surgeon suffering from astigmatism to conduct a surgical operation without glasses.

Abstract: A surgical microscope employs a pentaprism beam splitter as a branching unit to branch each beam passed through variable power optical systems into a first beam and a second beam, the first beam being horizontally reflected for an eyepiece unit, the second beam being vertically transmitted for an imaging device. The pentaprism alone is capable of simultaneously conducting reflection to provide an erect image and transmission to provide a photographing image, thereby reducing the number of optical parts in a microscope body of the surgical microscope.

Abstract: Disclosed is a female coupling member which includes a housing having a fluid passage extending therethrough, a valve member selectively opening and closing the fluid passage, and a valve open-closed state indicating member. The valve open-closed state indicating member has a valve open state indicating part and a valve closed state indicating part and is displaced in response to the displacement of the valve member. When a male coupling member is connected to the female coupling member, and when the valve member is in an open position, the valve open state indicating part is visible from the outside of the housing through a window of the housing, whereas, when the valve member is in a closed position, the valve closed state indicating part is visible from the outside of the housing through the window.

Abstract: A surgical microscope system includes a camera that is rotatable around a first rotation axis and a second rotation axis, the rotation axes being orthogonal to each other, so that a photographing direction of the camera is changeable at a given position. The first rotation axis is inclined with respect to a vertical axis, and therefore, a lower end of a first member is able to be set at a height that does not interfere with the photographing direction when the camera is horizontally oriented.