PULSE OXIMETER Russian patent published in 2013 - IPC A61B5/1455 G01N21/01 G08B21/18 

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment. Pulse oximeter contains unit of red emitter (1), unit of infrared emitter (2), photoreceiver (3), synchronisation unit (7), calculator unit (6) and indication unit (10). Pulse oximeter additionally contains analogous-digital converter (4), on-line storage (5), permanent memory permanent storage (9) and two units of comparator (8_1; 8₂), and indication unit (10) includes warning device. Synchronisation unit (7) with outlets is connected with units of red (1) and infrared (2) emitters and calculator unit (6). Analogous-digital converter (4) is connected with its inlets with photoreceiver (3) and synchronisation unit (7), and with outlet - with one of inlets of on-line storage (5), whose other inlet is connected with outlet of synchronisation unit (7). Outlets of on-line storage device (5) are connected to inlets of calculator unit (6), to outlet of which connected are indication unit (10) with warning device and two comparator units (8₁, 8₂), each of which is connected with indication unit (10) via outlet and via another outlet - with permanent storage device (9).

EFFECT: application of the invention will make it possible to inform about tendency of reduction of level of blood saturation with oxygen due to formation of two warning signals: preliminary, when level of saturation of blood with oxygen decreases to the limit, at which person is still conscious, and min one for informing surrounding people in order to attract external assistance.

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