CONTROL OF PATIENT INTERFACE MEANS FIXATION Russian patent published in 2018 - IPC A61M16/06 

FIELD: medicine.

SUBSTANCE: first version of the system contains a patient interface means to supply a gas stream to the patient. The interface means comprises a headband for securing to the patient and a mechanism for fixing force adjustment. The system includes a device for monitoring the degree of blood flow through the patient's blood vessel. The device contains a sensor and a control unit. The sensor detects the data on the blood flow through the blood vessel and is connected to the control unit to transfer the data to the control unit. The control unit is able to receive data from the sensor and to estimate the degree of blood flow based on the data mentioned. The control unit is able to provide a signal based on the blood flow in the blood vessel. The system comprises an adjusting mechanism controlling the force of patient interface means fixation by means of the headband, based on the signal provided by the detection device. In a second version of the system, the evaluation unit controls the audio signal generator to generate a warning signal if the degree of blood flow in the blood vessel or the degree of blood vessel occlusion passes a predetermined threshold. A warning signal indicates that the fixation force of the interface means is too strong. The force should be adapted by the adjusting mechanism. The method for prevention of red marks formation comprises the steps of interface means fixation to the patient by means of fixation force. The degree of blood flow through the patient's blood vessel is then assessed. Further, the fixation force is adjusted so that blood flow is present and that the blood flow exceeds a predetermined threshold.

EFFECT: creation of a system and method that ensures reduction of red marks, and increased comfort of wearing of the patient interface means.

15 cl, 5 dwg