Abstract: A microscope for operation body 1 having an objective lens 4 and eyepieces 5 is combined with a cap that is capable of covering the entire part of the microscope body 1 and which is made of a sterilizable elastic material such as rubber. A retaining portion 7 projecting to retain the cap is provided on the microscope body 1 and a mounting portion engageable with the retaining portion 7 is provided on the cap.

Abstract: To provide a surgical microscope comprising a microscope collimator for enabling the operator to easily recognize the swivel center of the microscope body regardless of what position the microscope body moves for easy setting of the swivel center point of the microscope body, a surgical microscope pivotally supporting a microscope body having, an observation optical system with one point on an observation optical axis of the microscope body as the swivel center. The surgical microscope comprises index projectors as swivel center visible indicators being capable of recognizing the swivel center. This configuration enables the operator to easily recognize the swivel center of the microscope body for easy setting of the swivel center point of the microscope body.

Abstract: An apparatus for holding a medical instrument, such as an endoscope, in place without exerting an undue force on an insertion hole in an abdominal cavity of a subject even when the arm of a scope-holding section is unlocked, includes a four-link parallelogram mechanism. The four-link parallelogram mechanism includes a support arm for supporting a treating tool, an arm section parallel to the support arm and upper and lower arm sections connected to the upper and lower end sides of the support arm and arm section in a parallel relation. A support mechanism supports the arm sections of the four-link parallelogram mechanism to allow the arm sections to be moved in left/right and up/down directions, while being rotated, so that a straight line connecting an intersecting point P of a center line of the treating instrument inserted into an insertion hole in an abdominal wall of a subject and the center of the insertion hole to spherical bearings of the arm is set parallel to the upper and lower arm sections.

Abstract: A surgical microscope system having a stereoscopic optical system, an imaging unit, and a monitor display. The stereoscopic optical system has two optical paths and forms a 3D image of an object. The imaging unit forms two images of the object from two light beams focused in the optical paths. The monitor display displays the images of the object which the imaging unit has formed. The surgical microscope system further comprises an observation-light receiving section located in the optical paths for determining an observation field, an observation-light emitting section located in the monitor display for applying the images formed by the imaging unit, and reflectors arranged between the observation-light receiving section and the observation-light emitting section. The observation-light receiving and the observation-light emitting sections are located close to each other and a barrel holds the sections together.

Abstract: The operating microscope comprises at least one suction port formed in a microscope body or an arm for supporting the microscope body which is to be enveloped in a drape, and an exhaust fan or exhaust pump connected to the suction port. An exhaust port to be connected to an exhaust pump may be formed in the drape. Since air is exhausted out of the drape, and the drape is brought into close contact with the microscope body and the arm by operating the exhaust fan or the exhaust pump, the drape does not constitute a hindrance in the visual field of a surgeon or dgrade operability of the microscope.

Abstract: The surgical microscope comprises a stand, an arm movably attached to said stand for sustaining a microscope body, an electric control equipment divided into a plural number of units removably piled up on said stand and a foot switch unit to be used for executing various types of functions. Accommodated in each unit are a function control means having a single specific function or plural specific functions different from those of the other units and an independent power source means connected to said function control means in a relation of 1:1 or in a different combination. The surgical microscope can be designed compact as a whole, has high operability and assures high security during operation. Should a function be lost due to troubles during operation, the surgical microscope prevents the other functions from being influenced by the troubles and allows to speedily restore the lost function.