NEGATIVE-PRESSURE WOUND THERAPY SYSTEM FOR DETECTING EXUDATE LEVEL THROUGH PHOTOELECTRONIC TOTAL INTERNAL REFLECTION

摘要

A negative-pressure wound therapy system for detecting an exudate level through photoelectronic total internal reflection comprises: a negative-pressure wound therapy device (8) having a negative-pressure source (6) and a controller (7); a liquid collection bottle (5) used for collecting exudate, the sidewall of the liquid collection bottle (5) being convex outwardly to form a protrusion, the angle theta formed between the planes of two opposite sides (5a, 5b) of the protrusion meeting: 97.2 degrees < theta < 180 degrees; at least one detection module (9), comprising: a transmission unit (91), located at the side (5a) of the protrusion, and used for transmitting an electromagnetic wave or ultrasonic wave signal to the liquid collection bottle (5); a receiving unit (92), correspondingly located at the other side (5b) of the protrusion, and used for receiving an electromagnetic wave or ultrasonic wave signal refracted by the liquid collection bottle (5); a detection control unit, used for determining whether exudate is present at the position of the detection module (9) according to whether the receiving unit (92) receives the electromagnetic wave or ultrasonic wave signal. The system is capable of detecting the level height of wound exudate in a liquid collection bottle accurately and conveniently, so that a health worker and a patient can learn in time the amount of exudate in the liquid collection bottle.