Oximeter

An oximeter comprising:

• a blood oxygen collecting circuit that has a first light emitting circuit, a second light emitting circuit, and a light receiving sensor, the first light emitting circuit emitting a red light, the second light emitting circuit emitting an infrared light, and the light receiving sensor i) receiving the red light emitted by the first light emitting circuit and not absorbed by a human body and the infrared light emitted by the second light emitting circuit and not absorbed by the human body, and ii) converting the received light into an electrical signal;
• a storage circuit that stores measurement data and/or a power-on startup screen, the power-on startup screen including a last measurement result of a blood oxygen saturation and/or previous measurement results of the blood oxygen saturation;
• a power-on button that is used for power-on startup;
• a microprocessor that calculates a blood oxygen saturation of the human body based on the electrical signal converted by the light receiving sensor, and after the power-on button is pressed, generates the power-on startup screen based on the measurement data stored in the storage circuit or reads the power-on startup screen stored by the storage circuit, and sends the power-on startup screen to a display;
• and
• the display that displays the power-on startup screen which is generated by the microprocessor based on the measurement data of the blood oxygen saturation stored in the storage circuit or the power-on startup screen including the last measurement result of the blood oxygen saturation and/or the previous measurement results of the blood oxygen saturation which is stored in the storage circuit after power-on,
• wherein a display space of the display is divided into a plurality of sub-spaces by the microprocessor based on a statistical result of the stored measurement data, and wherein the plurality of sub-spaces are displayed such that sizes of the sub-spaces and the statistical result are positively correlated,
• wherein a smaller sub-space is displayed in a red color,
• wherein the plurality of sub-spaces are displayed by an area chart, and wherein the microprocessor intercepts a part including data before an abnormality occurs and data immediately after an abnormality occurs, and a part including data at the end of an abnormality and data after the abnormality in a trend graph of the previous measurement results for display, and the intercepted two segments of data are displayed one above the other.