Method and device for controlled irrigation and suctioning of a liquid clarificant during endoscopic surgery

摘要

The irrigation circuit of this apparatus comprises a second pressure sensor CP2 forming a flowmeter with a first CP1, as well as a pressure sensor CPA located downstream. The apparatus also comprises a processing and control unit UCCG which establishes the calculated value of internal pressure within the cavity PI using the pressure variations furnished by pressure sensors CP1, CP2 during a procedure in relation to the values of the pressure differences during operation outside the cavity, which are stored for each resectoscope RT1. . . RTi . . . RTn during an initial calibration phase so that the absorption flow rate can be controlled. This invention is of interest to manufacturers of surgical instruments.