| 摘要 |
An endoscope provides for the examination of, and fluid delivery to, an operating field located in, for example, paranasal sinuses or the anterior base of the skull, for pressurized delivery of fluid and removal of tissue at a visually identified location. The endoscope includes a tubular shaft having a forward end for viewing the operating field, an optical viewer in connection with the shaft for providing a view of the operating field along an optical-exit axis, and irrigation and aspiration channels placed in connection with the shaft for providing targetted delivery of at least one jet of fluid at a location within the operating field along a fluid-delivery axis which intersects with the optical-exit axis at a distance from the forward end of the shaft, thereby enabling visual confirmation that the jet of fluid has impacted the targetted location simultaneously with the impact.
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