Surgery – Truss – Pad
Patent
1986-10-10
1988-09-20
Sikes, William L.
Surgery
Truss
Pad
350 9624, 128 5, G02B 606, A61B 100, A61N 700
Patent
active
047720930
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. Devices with varying bend radiuses are also shown.
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Abele John E.
Hopkins James F.
Jellison Thomas A.
Pincus Alice H.
Strom George E.
Microvasive, Inc.
Sikes William L.
Ullah Akm E.
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