Patent ID: 8308726

Claim:
A system for distending body tissue cavities of subjects by continuous flow irrigation during endoscopic procedures, the system comprising: an inflow pump comprising a hollow barrel with a proximal open end for holding a non viscous physiologic fluid for continuous flow irrigation during an endoscopic procedure, and a plunger mounted slidably inside the barrel for dispensing the fluid, the plunger being provided with an electromagnetic means for slidably moving the plunger in a to and fro manner inside the barrel so that the plunger is in contact with the fluid, a part of the plunger which is not in contact with the fluid being directly exposed to atmospheric pressure, wherein the electromagnetic means comprise a coil made of insulated wire being wound around a magnetic rod, the coil being connected to a DC current supplying means of dual polarity, wherein a partially closed distal end of the hollow barrel of the inflow pump is in direct contact with an inflow tube, the inflow tube dispensing the fluid at a controlled flow rate into the tissue cavity during an endoscopic procedure, to obtain a distended cavity, the flow rate at which the fluid enters into the cavity being termed as the cavity inflow rate, the inflow tube dispensing the fluid at the controlled flow rate directly from the hollow barrel of the inflow pump and directly into the tissue cavity, and only through the inflow tube; and an outflow port connectable to an inlet end of an outflow pump having an inlet end connected to the tissue cavity through an outflow tube for removing the fluid from the cavity at a controlled flow rate, the flow rate of the outflow pump being termed as the cavity outflow rate, wherein an outlet end of the outflow pump is connected to a waste fluid collecting container through a waste fluid carrying tube.