Optical: systems and elements – Protection from moisture or foreign particle – Microscope drape
Reexamination Certificate
2005-06-07
2005-06-07
Sikder, Mohammad (Department: 2872)
Optical: systems and elements
Protection from moisture or foreign particle
Microscope drape
C359S511000, C359S507000
Reexamination Certificate
active
06902278
ABSTRACT:
The present invention relates to a surgical microscope drape assembly for use with surgical microscopes in an operating room or similar sterile environment. In one embodiment of the invention, the drape assembly comprises an elongated hollow enclosure of sheet-form material having a first end defining an access opening and a second end defining a hole and at least 4 ocular pockets. The access opening of the enclosure allows access to the interior of the enclosure to enable the drape assembly to be pulled over the body of a surgical microscope while the at least four ocular pockets each cover a corresponding ocular port of the microscope to enable the drape assembly to be used on a variety of microscope heads. A view portal, preferably located on the enclosure at the hole proximal to the second end, includes a cylindrical frame with a window support adapted to be located within a cavity of the objective lens barrel of a microscope and a flange adapted for attachment to the sheet-form material of the drape assembly about the hole. The window of the view portal is acutely inclined to minimize glare from an the illumination source and may include at least one layer of anti-reflective coating to at least the upper surface of the window. Optimal viewability through the window occurs when the view portal is mounted on the objective lens barrel to have a rotational orientation of the window inclination towards a first or second ocular port of the microscope. A locator is preferably located on the cylindrical frame to rotationally orient the view portal of the drape assembly in relation to the objective lens barrel of the microscope when mounted thereon.
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Brochure—Optics One™ Surgical Microscope Draping System, “A New Standard in Precise Optics for Microscope Drape”, by MTI—Medical Technique, Inc., Tuscon, Arizona (4 pages—undated).
Catalog—Hospital Products Catalog&Pricelist—Advanced Medical Designs, Inc., Marietta, Georgia, (28 pages) (undated).
Brochure—The Science. The Surgeon. One, with Zeiss, “Opmi Drapes,” Carl Zeiss, Surgical Products Division, Thornwood, New York (4 pgs.) Feb., 1996.
Brochure—“Products—Microscope and Equipment Covers” by MTI—Medical Technique, Inc., Tuscon, Arizona (4 pages—undated).
Olson & Hierl Ltd.
Sikder Mohammad
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