Abstract
Disclosed is a medical optical devices wherein balance in a horizontal direction can be adjusted by moving the counterweight horizontally, and the balance in a vertical direction can be adjusted by moving whole the retaining link mechanism vertically. Thus only one counterweight is required, which eliminates a need to interlockedly move two counterweights simultaneously as conventionally, so that movement control of a counterweight is easy and a mechanism therefor can be simplified.
Filing date: Dec 13, 1995
Issue date: Feb 3, 1998
Inventor: Katsushige Nakamura
Assignee: Mitaka Kohki Co. Ltd.
Primary Examiner: Willie Berry, Jr.
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What is claimed is:
1. A stand apparatus for medical optical equipment, comprising:
- an intermediary portion of a retaining link mechanism essentially consisting of first and second parallel links which interlock each other and mounted moveably in a vertical direction with respect to a rotational fulcrum of a frame,
- a supporting arm which is formed by extending a part of said first parallel link in a horizontal direction, said supporting arm retaining at the distal end thereof medical optical equipments and/or their auxiliary devices, and
- a weight holding arm which is formed by extending a part of said second parallel link in a horizontal direction opposite to said supporting arm, said weight holding arm being provided with a single counterweight that is movable with respect to the fulcrum such that all balance adjustment can be made by moving the single counterweight.
2. The stand apparatus for medical optical equipments according to claim 1, wherein said auxiliary devices include a side microscope.
3. The stand apparatus for medical optical equipments according to claim 1, wherein said auxiliary devices include a video camera.
4. The stand apparatus for medical optical equipments according to claim 1, wherein said auxiliary devices include a side microscope and a video camera.
5. The stand apparatus for medical optical equipments according to claim 1, wherein said frame is of a type which is set on a floor.
6. The stand apparatus for medical optical equipments according to claim 1, wherein said frame is of a type which is set on a floor.
7. A stand apparatus for medical optical equipment, comprising:
- an intermediary portion of a retaining link mechanism essentially consisting of first and second parallel links which interlock each other and is mounted moveably in a horizontal direction with respect to a rotational fulcrum of a frame,
- a supporting arm which is formed by extending a part of said first parallel link in a horizontal direction, said supporting arm retaining at the distal end thereof medical optical equipments and/or their auxiliary devices, and
- a weight holding arm which is formed by extending a part of said second parallel link in a horizontal direction, said weight holding arm being provided with a single counterweight that is moveable with respect to the fulcrum such that all balance adjustments can be made by moving the single counterweight.
8. The stand apparatus for medical optical equipments according to claim 7, wherein said auxiliary devices include a side microscope.
9. The stand apparatus for medical optical equipments according to claim 7, wherein said auxiliary devices include a video camera.
10. The stand apparatus for medical optical equipments according to claim 7, wherein said auxiliary devices include a side microscope and a video camera.
11. The stand apparatus for medical optical equipments according to claim 7, wherein said frame is of a type which is set on a floor.
12. The stand apparatus for medical optical equipments according to claim 3, wherein said frame is of a type which is suspended from a ceiling of an operating room.