System for detecting compresses in the surgical field through the use of active or passive elements placed in the compresses

摘要

The system is designed to locate or detect if in a surgical operation compresses or surgical instruments have been forgotten inside the patient. The system comprises the incorporation of a receiver in the compresses, said receiver being formed of a coil and a capacitor for generating an electric current induced when the receiver is subjected to the electromagnetic field created by an external emitter provided with means for setting in operation the receiver and with a coil connected to a capacitor, so that the self-induced current created in the receiver when stopping the electromagnetic field is detected by the emitter itself, thus generating in the emitter a current capable of activating a supply circuit for a light and/or acoustic signalling device which forms part of the emitter itself, to indicate, in the case of activation, the existence of the surgical compress inside the patient who has been operated.