TW201313196A - Body-type physiological parameters monitoring apparatus and display-switching method and device thereof - Google Patents

Abstract

A display-switching method of a body-type physiological parameters monitoring apparatus is disclosed. The display-switching method comprises the following steps: detecting the light intensity of one or more of transmitted light or reflected light and storing the values of the light intensity in form of discrete signal points, choosing a plurality of signal points of preset interval for signal processing to obtain the components values and the components average values in each signal point of the plurality of signal points, switching the display mode if the difference between components values and the components average values in any one signal point of the plurality signal points exceeds a preset range, and displaying as the display mode switched. The display mode can be switched by performing the inventive display-switching method without introducing any additional components.

Description

Body type physiological parameter monitor and display switching method and device thereof

The present invention relates to a medical instrument, in particular to a body type physiological parameter monitor and a display switching method and device thereof.

At present, the technology for non-invasive detection of blood oxygen saturation and heart rate by optical methods is widely used in the medical field. With the continuous advancement and development of technology, the physiological parameter detecting device is also continuously miniaturized, based on the physiological parameter monitor of the body ( Such as fingertip oximeters or finger oximeters are becoming more and more widely used.

Taking the finger-type oximeter as an example, the early finger-type oximeter can only observe the measurement results from a fixed direction, which causes inconvenience to the medical staff to read the data. At present, there are some related patents for such inconvenience.

Chinese patent No. ZL200610089152.9 uses the power button as a switching button to switch the display direction, and some finger-end oximeters are more concealed and inconvenient to operate in order to achieve waterproof function.

Chinese Patent No. ZL200820093099.4 proposes to use the concept of intelligent direction sensor to sense the direction of observation, but does not mention how to implement this intelligent direction sensor. For a fingertip oximeter, in such a small area It is technically more complicated to be more sensitive to achieve more complex sensing observation directions and to make judgments to meet the direction of customer observation requirements.

Chinese Patent No. ZL200820146979.3 proposes to use a ball switch device that automatically realizes the lowest position conduction in four directions to realize the basis of the display direction switching judgment. Firstly, the sensitivity and reliability of the ball switch device have a large problem, and secondly, this The device is not suitable for use in sports rescue situations. Another point is that the device is not suitable for medical personnel. Some patients may be in a coma state, and the patient may not turn the finger direction to meet the medical staff to read the data.

In addition, there is a conventional technique of using an acceleration sensor to switch the display direction. This technique is still problematic for medical personnel. If the patient is in a coma, the medical staff does not use the performance of the acceleration sensor to adjust the direction.

In view of the above defects in the prior art, the main purpose of the present invention is to provide a body type physiological parameter monitor capable of observing test results from different angles, a display switching method and device thereof, which are convenient to operate, simple in technology, reliable in performance, and unnecessary Adding any additional components reduces production costs.

In order to achieve the above object, a preferred embodiment of the present invention provides a display switching method for a body type physiological parameter monitor, comprising at least the following steps: S1, detecting one or more transmitted or reflected light intensities through body tissues, and And storing a light intensity value as a discrete signal point; S2, selecting a plurality of signal points at a predetermined interval for signal processing to obtain a component value of each signal point of the plurality of signal points and the plurality of signal points a component average value; S3, if the component value of any one of the plurality of signal points differs from the component average value by more than a preset range, performing a display mode switching; and S4, according to the switched The display mode is displayed.

In order to achieve the above object, another preferred embodiment of the present invention provides a display switching device for a body type physiological parameter monitor, comprising at least: a signal acquisition unit for detecting one or more transmitted or reflected light intensities through body tissues. And storing a light intensity value as a discrete signal point; a signal processing unit selecting a plurality of signal points for signal processing at a predetermined interval to obtain a component value of each of the plurality of signal points and the a component average value of the plurality of signal points; a display switching unit configured to determine, at the signal processing unit, that the component value of any one of the plurality of signal points differs from the component average value by a preset range And switching a display mode; and displaying a display unit according to the display mode after the switching of the display switching unit.

In order to achieve the above object, another preferred embodiment of the present invention provides a body type physiological parameter monitor including the display switching device as described above.

The body type physiological parameter monitor of the present invention, the display switching method and the device thereof do not need to add any additional components, and the display mode can be switched only by changing the display method.

Some exemplary embodiments embodying the features and advantages of the present invention are described in detail in the following description. It should be understood that the present invention is capable of various modifications in the various aspects of the present invention, and the description and drawings are intended to be illustrative and not limiting.

The present invention provides a display switching method of a body type physiological parameter monitor, and the implementation thereof is shown in FIG. 1 , wherein FIG. 1 is a flowchart of a display switching method of a body type physiological parameter monitor according to a preferred embodiment of the present invention, and the body of the present invention. The display switching method of the physiological parameter monitor includes at least the following steps S101 to S104.

S101: detecting one or more transmitted or reflected light intensities through body tissues, and storing the light intensity values as discrete signal points;
In some embodiments, the body-type physiological parameter monitor for the present invention may be a finger-type oximeter. For the sake of brevity, the following refers to a finger-type oximeter as an example, but it should be understood. Yes, the method and apparatus of the present invention are equally applicable to a body-type physiological parameter monitoring device using a measurement principle similar to that of a finger-type oximeter, and is not limited to a finger-end oximeter.

In the embodiment, the finger-type oximeter can be opened by the user or the medical staff, and the probe is clamped into the finger, and the finger-type oximeter can start working. The working principle is to determine the wavelength of the selected light wave. Absorption rate is used to determine the amount and pulse rate of oxyhemoglobin. Specifically, the oximeter refers to light generated by the photo-electric generating tube disposed at one end of the clip passing through the body tissue, and then detected by the light-receiving tube in the probe provided at the opposite end of the finger, and converted into a pulse electric signal to determine the flow through the Measuring the oxygen saturation of the arterial blood of the finger and displaying the measured results (eg, blood oxygen readings and heart rate waveforms) on the display of the oximeter in an initial display mode (which may be initially displayed in display mode 1 as shown in FIG. 3a) .

For this step, in some embodiments, the light intensity value in the form of a pulse signal detected by the light receiving tube in the above oximeter can be directly used, for example, each high level state of the pulse signal can be regarded as an effective Discrete signal points thus correspond to a specific light intensity value. However, it should be understood that in other embodiments, the light intensity values may also be stored in the form of discrete signal points other than pulse signals in this step.

S102: Select a plurality of signal points according to a preset interval to perform signal processing, to obtain a component value of each signal point of the plurality of signal points and an average value of components of the plurality of signal points;
In some embodiments, the light intensity value in the form of discrete signal points obtained in step S101 can be monitored and signaled in real time by the CPU of the oximeter, for example, selecting a plurality of signal points at predetermined intervals to calculate the component values thereof. (AC value or DC value) and component average. Under normal circumstances, the component values of these discrete signal points will always maintain a stable state; however, in the event of an abnormal situation such as a change in the position of the probe, the probe will have a jump in the received light intensity signal of the body tissue, thereby causing the dispersion. The component values of the signal points fluctuate. The idea of this case is to judge the artificial interference action by detecting the abnormal fluctuation of the component value of the signal point and to switch the display mode accordingly. In some embodiments, if the user desires to switch the display mode, an artificial jamming action can be applied to the probe, for example, pressing the probe portion (preferably about 1 second), thereby triggering fluctuation detection of the CPU and subsequent display switching. action. It should be noted that although the moment of pressing will affect the waveform of the light intensity signal, it will affect the blood oxygen reading and heart rate waveform to be measured by the oximeter itself, but this effect can be recovered in a short time, so It will have a negative impact on the test results.

S103: If the component value of any one of the plurality of signal points differs from the average value of the component by more than a preset range, switching the display mode is performed;
In some embodiments, the signal processing of the above step S102 and the display switching of step S103 may be specifically performed by the following steps S201 to S205, as shown in FIG. 2, which is the signal processing and display switching of the embodiment shown in FIG. 1. A flow chart of a specific embodiment of the steps.

S201. Putting the collected light intensity values in the form of discrete signal points into a processing array (not shown);
S202. Reading the Mth signal point in the processing array;
S203. determining whether a predetermined linear relationship is satisfied between the M value and the preset K value, and then selecting the signal point as the processing signal point, otherwise continuing the next M value;
In some embodiments, the algorithm for selecting a plurality of signal points at a preset interval in the above step S102 may be: determining whether the position of the Mth signal point in the array (ie, the value of M) and the preset K value are The predetermined linear relationship is satisfied. If it is satisfied, the signal point is selected as the processing signal point and the process proceeds to step S204. Otherwise, the M+1th signal point (ie, M=M+1) is continuously read to perform the determination of step S203. This step can actually achieve the effect of selecting one processing signal point every K signal points in the processing array.

S204. Calculating component values (preferably AC values and/or DC values) of the signal points in the R signal points in the vicinity of the processing signal point and obtaining the component average values (corresponding to the AC average value and/or the DC average value) );
In the above steps S203-S204, K and R are all non-zero natural numbers, preferably, R≤K. In addition, in some embodiments, the R signal points in the vicinity of the processing signal point are selected in step S204. R/2 signal points are selected from the left and right of the signal point, and R is an even number.

S205. Determine whether the component values of the Mth signal point and the nearby R signal points fluctuate greatly, if yes, proceed to step S206, otherwise go to step S207;
In some embodiments, this step determines whether the AC value of any of the M signal points and the nearby R signal points fluctuates greatly with respect to the AC average value or the DC value fluctuates greatly with respect to the DC average value or Both of them are highly volatile. In some embodiments, the standard that the AC value fluctuates greatly with respect to the AC average value is that the AC value exceeds the AC average value by more than 2.3-5.0 times, and the DC value fluctuates greatly with respect to the DC average value. The DC value exceeds the DC average value. 2.3-5.0 times.

S206: giving a command to switch the display mode;
If it is judged in step S205 that the fluctuation large condition is satisfied, the command to switch the display mode can be given and the flow can be ended.

S207: A command for changing the display mode is not issued;
If it is judged in step S205 that the fluctuation large condition is not satisfied, the command to change the display mode is not issued and the flow proceeds to step S208.

S208: The display mode remains in the original display state.

In some embodiments, the following steps are further included after the foregoing steps S101 to S103.

S104: Display according to the display mode after the switching.

In some embodiments, the content to be displayed by the oximeter includes a blood oxygen reading and a heart rate waveform as described in step S101. Moreover, in some embodiments, the display mode switching performed in step S103 may be cyclic switching between a plurality of display modes. For example, after step S103, the step S104 may be in the following order of (1)-(6). Cyclic display is shown between the following five display modes (as shown in Figures 3a-3e, wherein Figures 3a-3e are schematic diagrams of five display modes of the body-type physiological parameter monitor of the present invention).
(1). Display mode 1 when starting up (as shown in Figure 3a, the blood oxygen reading and heart rate waveform displayed normally in the horizontal direction);
(2). Press the blood oxygen detection probe and directly switch to display mode 2 (as shown in Figure 3b, the normal blood oxygen reading and heart rate waveform);
(3). Continue to press the blood oxygen detection probe and switch to display mode 3 (as shown in Figure 3c, the blood oxygen reading in the vertical bold display and the heart rate waveform in the vertical normal display);
(4). Continue to press the blood oxygen detection probe and switch to display mode 4 (as shown in Figure 3d, the blood oxygen reading in the longitudinal bold display and the heart rate waveform in the vertical reverse color display);
(5). Continue to press the blood oxygen probe and switch to display mode 5 (as shown in Figure 3e, the blood oxygen reading in the horizontal bold display and the heart rate waveform in the horizontal normal display);
(6). Continue to press the oximeter and switch to display mode 1.

4 is a block diagram of a display switching device of a body type physiological parameter monitor according to a preferred embodiment of the present invention. As shown in the figure, the display switching device of the present embodiment may include: a signal acquisition unit 41 for detecting a path through body tissues. Or multi-channel transmitted light or reflected light intensity, and the light intensity value is stored as discrete signal points; the signal processing unit 42 selects a plurality of signal points for signal processing at predetermined intervals to obtain each of the plurality of signal points. The component value and the component average value of the plurality of signal points; the display switching unit 43 is configured to determine, at the signal processing unit 42, that the component value of any one of the plurality of signal points differs from the component average value by more than a preset range. When the display mode is switched, the display unit 44 performs display in accordance with the display mode after the display switching unit 43 switches.

In some embodiments, the signal processing unit 42 may specifically include: a processing array sub-unit 421 that places light intensity values in the form of discrete signal points into a processing array; a component calculation sub-unit 422, in the processing array of the processing array unit 421 A processing signal point is selected every K signal points, and the component values and component average values of the signal points in the processing signal point and the R signal points in the vicinity are calculated, wherein K and R are non-zero natural numbers.

In some embodiments, the component values described above may include an alternating current value and/or a direct current value, and the component average values correspondingly include an alternating current average and/or a direct current average.

In some embodiments, the signal processing unit 42 may further include: a switching notification sub-unit 423, and the component calculation sub-unit 422 calculates an AC value of any one of the processing signal points and R signal points in the vicinity thereof by calculation. And/or when the DC value is more than 2.3 to 5.0 times the AC average value and/or the DC average value, the display switching unit 43 is notified to switch the display mode.

In some embodiments, the display switching unit 43 may include: a mode storage sub-unit 431 for storing a plurality of display modes; a cyclic switching sub-unit 432, which is stored in the mode storage sub-unit 431 according to the processing result of the signal processing unit 201. Cyclic switching between display modes.

In addition, the present invention also provides a body type physiological parameter monitor comprising a display switching device of the body type physiological parameter monitor as described above.

At the same time, according to the above description of the body type physiological parameter monitor, the display switching method and the device, it can be seen that each unit in the display switching device of the body type physiological parameter monitor of the present invention and the function and method embodiments thereof are completed. The steps are corresponding, therefore, although some specific processes only appear in the above method embodiments, but are not described in the device embodiment, but for the sake of brevity, it should be understood that these specific processes can also be Apparatus embodiments for implementing a body-type physiological parameter monitor are performed by the functions and means already described.

In this case, no component is added, and the display mode switching function can be realized only by judging the detection signal by an algorithm, and the difference between the interference state and the pressing probe in the motion state and the jitter state can be recognized from the algorithm.

Although the present invention has been described in detail by the above embodiments, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of the present invention. Although the present invention has been described as far as possible in detail with reference to the above preferred embodiments, those skilled in the art should understand that the modifications and equivalents of the technical solutions of the present invention still fall within the spirit and scope of the technical solutions of the present invention. Any improvement or modification made to the case shall be within the scope of the protection claimed in the scope of the patent application.

41. . . Signal acquisition unit

42. . . Signal processing unit

421. . . Processing array subunits

422. . . Component calculation subunit

423. . . Switch notification subunit

43. . . Display switching unit

431. . . Mode storage subunit

432. . . Cyclic switching subunit

44. . . Display unit

K, R. . . Number of signal points

M. . . Signal points

S101~S104. . . Process step of display switching method of body type physiological parameter monitor

S201~S208. . . Process steps for signal processing and display switching steps

1 is a flow chart showing a display switching method of a body type physiological parameter monitor according to a preferred embodiment of the present invention.

2 is a flow chart showing a specific embodiment of the signal processing and display switching steps of the embodiment shown in FIG. 1.

3a-3e are schematic views of five display modes of the body type physiological parameter monitor of the present invention.

4 is a block diagram of a display switching device of a body type physiological parameter monitor according to a preferred embodiment of the present invention.

S101~S104. . . Process step of display switching method of body type physiological parameter monitor

Claims (10)

A display switching method for a body type physiological parameter monitor includes at least the following steps:
S1, detecting one or more transmitted or reflected light intensities through the body tissue, and storing a light intensity value in the form of discrete signal points;
S2, selecting a plurality of signal points according to a preset interval for signal processing, to obtain a component value of each signal point of the plurality of signal points and an average value of a component of the plurality of signal points;
S3. If the component value of any one of the plurality of signal points differs from the average value of the component by more than a preset range, switching is performed in a display mode; and S4 is displayed according to the display mode after the switching. The display switching method of the body type physiological parameter monitor according to the first aspect of the invention, wherein the step S2 further comprises the following steps:
Putting the light intensity value in the form of discrete signal points into a processing array; and selecting a processing signal point every K signal points in the processing array, and calculating each signal point in the processing signal point and the R signal points in the vicinity thereof The component value and the average value of the component, wherein K and R are non-zero natural numbers. The display switching method of the body type physiological parameter monitor according to the second aspect of the invention, wherein the component value comprises an alternating current value and/or a continuous current value, and the average value of the component correspondingly includes an alternating current average value and/or A DC average value; the step S3 correspondingly further comprises the steps of:
If the AC value of the signal point and any of the R signal points in the vicinity of the signal point and/or the DC value are correspondingly more than 2.3 to 5.0 times the AC average value and/or the DC average value, then proceeding The switching of the display mode. The display switching method of the body type physiological parameter monitor according to any one of claims 1 to 3, wherein the switching of the display mode in the step S3 further comprises the step of: cyclically switching between the plurality of display modes. . The display switching method of the body type physiological parameter monitor according to the fourth aspect of the invention, wherein the content displayed in the step S4 includes a blood oxygen reading and a heart rate waveform, and the display mode is selected from any combination of the following modes: horizontal Normally displayed blood oxygen readings and heart rate waveforms; longitudinal normal display of blood oxygen readings and heart rate waveforms; longitudinally bolded blood oxygen readings and longitudinally displayed heart rate waveforms; longitudinal bolded blood oxygen readings and vertical reverse color displays Heart rate waveform; blood oxygen readings in bold horizontally and heart rate waveforms in normal lateral display. A display switching device for a body type physiological parameter monitor includes at least:
a signal acquisition unit that detects one or more transmitted or reflected light intensities through body tissue and stores a light intensity value as discrete signal points;
a signal processing unit that selects a plurality of signal points for signal processing at a preset interval to obtain a component value of each signal point of the plurality of signal points and an average value of a component of the plurality of signal points;
a display switching unit, configured to perform switching of a display mode when the signal processing unit determines that the component value of any one of the plurality of signal points differs from the average value of the component by a preset range; A display unit performs display according to the display mode after the display switching unit switches. The display switching device of the body type physiological parameter monitor according to the sixth aspect of the invention, wherein the signal processing unit further comprises:
Processing the array subunit, placing the light intensity value in the form of a discrete signal point into a processing array; and a component computing subunit, selecting a processing signal for every K signal points in the processing array of the processing array subunit Point, calculate the component value of each signal point in the processing signal point and the R signal points in the vicinity thereof and the average value of the component, where K and R are non-zero natural numbers. The display switching device of the body type physiological parameter monitor according to the seventh aspect of the invention, wherein the component value comprises an alternating current value and/or a continuous current value, and the average value of the component correspondingly includes an alternating current average value and/or a DC average; the signal processing unit further includes:
a switching notification subunit, wherein the component calculation unit calculates, by calculating, the AC value of the signal point and any of the R signal points in the vicinity thereof and/or the DC value is correspondingly compared to the AC average value And/or when the DC average value exceeds 2.3 to 5.0 times, the display switching unit is notified to perform switching of the display mode. The display switching device of the body type physiological parameter monitor according to the eighth aspect of the invention, wherein the display switching unit further comprises:
a mode storage subunit for storing a plurality of display modes; and a cyclic switching subunit for cyclically switching between the plurality of display modes stored by the mode storage subunit according to the processing result of the signal processing unit. A body type physiological parameter monitor comprising the display switching device according to any one of claims 6 to 9.