ASPIRATION FLOW METER AND CONTROL

摘要

An ophthalmic surgical pump system (32) includes a collection reservoir (54) and a venturi pump (56) for creating a vacuum level for aspirating fluid and tissue from a surgical site to the collection reservoir (54). Aspiration tubing (50) connects to each of a surgical handpiece (46) and the collection reservoir (54). A flow meter (34) is electrically connected to either the aspiration tube (50) or the collection reservoir (54). Control circuitry (38 ) is connected to the flow meter (34) and to the venturi pump (56) for varying a vacuum level of the pump (56) to maintain a desired flow rate of the fluid a nd tissue being aspirated from the surgical site.