Читать книгу Small Animal Laparoscopy and Thoracoscopy - Группа авторов - Страница 109

Multiple types of cannula–trocar assemblies are available in human and veterinary medicine. They can be divided into reusable or single use, rigid or flexible, and by the various fixation methods they used. Various designs of each type are available. Although the initial cost of a reusable trocar assembly is high, the per‐use cost is significantly less than that of disposable types. However, reusable trocars can be difficult to sterilize because of the number of small parts that comprise the valve and gas inlet assemblies. Additionally, over time, the tips can become blunt and the valves leaky and stiff. Some manufacturers now offer a combination type using a reusable sleeve and piercing stylus in conjunction with a single‐use valve assembly.