Patent ID: 9233020
Filing Date: 2016-01-12
CPC Classification: A61F,A61G

Claim Text:
1. A control system for a vacuum suction type urine collector, the vacuum suction type urine collector including a urine receiver, a urine tank, a urine transport tube defining a vacuum suction urine path extending from the urine receiver to the urine tank, and a vacuum suction device for providing vacuum suction, said control system comprising: a pair of electrodes for being installed on a side of the urine receiver; a detection resistor connected in series to said pair of electrodes to form a series circuit; a manual operation switch connected in parallel to said series circuit to form a state detection circuit; and a controller which measures resistance between said pair of electrodes to automatically detect urine, wherein said controller is configured to: measure the resistance of said state detection circuit, classify the measured resistance of said state detection circuit as one of several established resistance classes, store the classified resistance class, detect a change of class by comparing the classified resistance class with the corresponding stored resistance class, set an action mode in reference to the detected change of class and to a state of said manual operation switch detected from the resistance of said state detection circuit, and control the vacuum suction device on the basis of the set action mode, wherein the action mode is set to one of: (i) a manual operation-based action mode where said manual operation switch is turned on; and (ii) a urine detection-based action mode where said manual operation switch is turned off, wherein said set action mode sets the manual operation-based action mode when the resistance of the state detection circuit is zero, wherein the several established resistance classes include a normal class of a high resistance range corresponding to a state substantially free from contamination between said electrodes, an alarm class of a low resistance range corresponding to a state where it is difficult to detect urine in reference to the resistance because of the contamination between said electrodes, and an intermediate class corresponding to the state between the normal class and the alarm class, wherein said set action mode sets the urine detection-based action mode when the change from another class to the alarm class is detected, and cancels the urine detection-based action mode when the change from the alarm class to another class is detected, for actuating said control of the vacuum suction device, wherein said control of the vacuum suction device stops the action of the vacuum suction device and issues an alarm if the alarm class is detected after an elapsing time period (α) from the time point when the urine detection-based action mode is set has exceeded a set time period (δ), and wherein, after issuing the alarm, said control of the vacuum suction device activates the vacuum suction device when said manual operation switch is turned on.