Читать книгу Veterinary Endoscopy for the Small Animal Practitioner - Группа авторов - Страница 30

Gravity flow is adequate in most cases for diagnostic and operative procedures and pressure‐assisted flow is rarely needed. A manually inflatable pressure cuff is placed around the fluid bag to increase pressure when needed. This system is inexpensive and is easy to set up and use. Disadvantages are that pressure needs to be repeatedly added to the bag during the procedure, changing bags can be cumbersome, and the potential for excessive pressure exists. Using two fluid bags with two pressure cuffs facilitates changing bags because when one bag is empty, the fluid line is quickly and easily changed to the second bag. The pressure cuff from the empty bag is then transferred to a new full bag so that it is ready for the next exchange. There are many manufacturers and sources of these pressure cuffs.