| 摘要 |
<p>A micro-endoscope comprises a flexible outer tube (1) having an insertion length of 90 cm to 1.20 m and made of a material with a low friction coefficient, e.g. polyurethane. Located in the tube (1) is an image bundle of quartz silicon glass fibers (2) each of 2-5 micro-meter diameter which acts as an image lens. Also located in the tube (1) is a light guide tube (3) which houses a bundle of glass fibres (4) through which light is passed to the distal end (5) of the micro-endoscope. A flushing channel (6) extends through the length of the tube (1) enabling a fluid to be flushed to the distal end of tube (1) and an instrument channel (17). The distal end (5) is articulated at (7) to enable the micro-endoscope to be moved through 90 degrees.</p> |
