George A Strom, Age 77Avon, MA
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Canton, MA
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Us Patents
Fiber-Optic Image-Carrying Device
US Patent:
4772093, Sep 20, 1988
Filed:
Oct 10, 1986
Appl. No.:
6/917915
Inventors:
John E. Abele - Concord MA
George E. Strom - North Kingstown RI
James F. Hopkins - Marlboro MA
Thomas A. Jellison - Framingham MA
Alice H. Pincus - Andover MA
George E. Strom - North Kingstown RI
James F. Hopkins - Marlboro MA
Thomas A. Jellison - Framingham MA
Alice H. Pincus - Andover MA
Assignee:
Microvasive, Inc. - Milford MA
International Classification:
G02B 606
A61B 100
A61N 700
A61B 100
A61N 700
US Classification:
350 9625
Abstract:
An elongated image-carrying member that enables microendoscopy to be practiced using normal-sized catheters, includes a drawn, fused, central multi-fiber micro-unit of about 0. 5 mm diameter, having about 2,000 glass fibers in coherent array, with a polymeric coating bonded to its pristine as-drawn outer surface. This combination achieves sufficient flexibility and optical qualities to enable effective use to provide vision for inspection of small passages and ducts. Flexible image-carrying members having diameter of 0. 5 millimeter or less and catheters of diameter of 3 mm or less incorporating such members and effective working channels are achievable. For vision in remote areas, the micro-unit is employed with a substantially spherical lens with an ocular system for providing a focus range from less than about 2 mm to infinity and having resolution of detail down to the order of about 0. 001 inch. The micro-optical member may be employed with a handpiece in a vision system, the micro-optical member being joined to the handpiece by a detachable connector having a stepped structure for precise alignment between the handle and the micro-optical member. By application of a relatively thin coating containing an opaque constituent to the as drawn micro-unit, degradation of the image and avoidance of artifacts caused by wave guiding effect are avoided.
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