Patent ID: 8608682

Claim:
A pressure regulation device for irrigation at a surgical site in a body cavity comprising: an inflow liquid pump arranged to feed an irrigation liquid from a container though a feed line into a body cavity, an outflow device arranged to drain the irrigation liquid from the body cavity through a tubing, a first control unit controlling the inflow liquid pump and/or the outflow device, optical sensors configured to be provided at an outflow site of the body cavity to register an amount of blood cells and/or red blood cells and/or haemoglobin and/or an amount of debris in the irrigation liquid, and a second control unit that receives signals from the optical sensors indicating the amount of blood cells and/or red blood cells and/or haemoglobin and/or an amount of debris in the irrigation liquid, and based on the signals, controls the flow of irrigation liquid effected by the inflow liquid pump to the surgical site and/or the flow of irrigation liquid from the surgical site effected by the outflow device to rinse the surgical site until a level of clear vision in the body cavity is reached, whereby the pressure regulation device automatically increases a flow of the inflow irrigation liquid when the amount of debris is increased in the irrigation liquid in or coming out of the surgical site or regulates the pump so that a pressure of the irrigation liquid is increased when the amount of blood cells or haemoglobin is increased in or coming out of the surgical site.