DEVICE TO SUPPLY LIQUID TO BODY CAVITY DURING ENDOSCOPE TREATMENT

摘要

PURPOSE: To discharge a liquid at a high pressure even through the pressure of a discharge pump is low by controlling the discharge pump to operate the pump so as to feed liquid by a volume which is a function of a pump speed. CONSTITUTION: Two bags 1 charged therein with sterile foods are connected to an inlet port of a centrifugal inflow pump 4 housed in a cassette 200 in a fluid control unit 5 through conduits 2, and the centrifugal inflow pump 4 supplies pressurized liquid into a body cavity 10 through a conduit 7 by means of an inflow cannula assembly 9 in which an endoscope 8 is located, and the pressurized liquid is fed into the body cavity 10 through a ring between the endoscope 8 and the inflow cannula assembly 9. At this time, the pressure in the conduit 7 is detected by a pressure transducer 11 which delivers an output with which the speed of the centrifugal inflow pump 4 is adjusted by means of a pressure control device in the liquid control unit 5. With this arrangement, the outlet pressure of the liquid to be fed can be controlled by the centrifugal inflow pump 4.