Phaco Fundamentals Part 3: Peristaltic vs Venturi Pumps in Cataract Surgery скачать в хорошем качестве

Phaco Fundamentals Part 3: Peristaltic vs Venturi Pumps in Cataract Surgery

There is a full article + figures for this video on CataractCoach.com (will be posted on Wed 17 April 2019). Youtube will not allow the full text to be posted here. With modern-day techniques of phaco-assisted aspiration of cataracts, one of the most important concepts in our phaco platforms is the creation of vacuum levels during surgery. The creation of fluid flow and vacuum levels within the phaco machine is required to provide the driving force for the outflow of the emulsified cataract and balanced salt solution during surgery. The vacuum level is dynamic and changes during the various parts of surgery; lower vacuum levels are required during nucleus sculpting, whereas higher vacuum levels are needed for chopping and fragment removal. Our machines let us select a maximum vacuum level, typically specified in millimeters of mercury, and we can have relative control of the vacuum level up to this limit with our foot pedal position, depending on the type of fluid pump. Two primary vacuum pumps are used in phacoemulsification platforms — peristaltic and venturi. Although they work in different ways, each has its advantages.