Читать книгу Small Animal Laparoscopy and Thoracoscopy онлайн

130 страница из 232

ssss1 Matching diameter of telescope and light cable for optimal illumination and to avoid overheating.

Telescope diameter (mm) Recommended cable diameter (mm) 6.5–12 4.8–5.0 3.0–6.5 3.0–3.5 0.8–2.9 2.0–2.5

Careful handling of a light cable will prolong its life span, avoiding discoloration of the ends and breakage of individual fibers. Light cable integrity is assessed by looking through one end of the cable toward a room light or window. However, over time discoloration reduces light transmission and can change the color of the light that is emitted. Broken fibers will appear as small black or gray areas. When more than 30% of the fibers are broken, replacement of the cable is recommended. Excessive bending, twisting, or crushing of light cables should be avoided to minimize fiber breakage.

Contemporary light cables are autoclavable, but manufacturers' recommendations for time and cycle should be carefully followed using an appropriate sterilizer. Light cables should always be stored alone in adequate containers in a loosely coiled position, to minimize stress on the glass fibers.