CN106377255B - Blood state display equipment and method - Google Patents

Blood state display equipment and method Download PDF

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CN106377255B
CN106377255B CN201610755815.XA CN201610755815A CN106377255B CN 106377255 B CN106377255 B CN 106377255B CN 201610755815 A CN201610755815 A CN 201610755815A CN 106377255 B CN106377255 B CN 106377255B
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CN106377255A (en
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于邦仲
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Suzhou Han Xuan Mdt InfoTech Ltd
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Suzhou Han Xuan Mdt Infotech Ltd
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    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
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    • A61B5/053—Measuring electrical impedance or conductance of a portion of the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
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    • A61B5/742—Details of notification to user or communication with user or patient ; user input means using visual displays

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Abstract

The present invention provides a blood status display apparatus and method, the blood status display apparatus including: an alternating current supply section for supplying an alternating current of a constant magnitude to at least one pair of electrodes; the electrode pair is arranged at the part to be detected and used for receiving the alternating current and outputting the alternating current to the part to be detected; the timer is used for setting a detection time interval, starting timing when current passes through at least one pair of electrodes, and triggering the voltage detection part when the timing reaches integral multiple of the time interval; the voltage detection part is used for detecting a voltage value generated by the part to be detected when the trigger of the timer is received; and the display part is used for displaying the signal intensity corresponding to the voltage value according to the voltage value detected by the voltage detection part. The scheme provided by the invention can monitor the change of the blood state at the wound.

Description

Blood state display equipment and method
Technical Field
The invention relates to the technical field of medical instruments, in particular to a blood state display device and a blood state display method.
Background
In the medical operation process, doctors often scratch the wound through a scalpel so as to expose the part to be operated, thereby facilitating the operation of medical staff. After the operation is completed, doctors are often required to check the healing condition of the wound regularly and judge whether the blood state of the wound is normal by inquiring the condition of the patients.
Because of the range of human perception beyond which a patient may feel uncomfortable or experience a significant symptom, the patient may not inform the medical personnel, for example: when the blood leakage or the thrombus of the wound occurs, the medical staff can know that the blood state of the wound is abnormal only when the patient feels uncomfortable or the wound has obvious blood leakage symptoms after the blood leakage or the thrombus of the wound is serious or appears for a period of time. The existing mode of manually inspecting the wound cannot monitor the change of the blood state at the wound.
Disclosure of Invention
The embodiment of the invention provides a blood state display device and a blood state display method, which can monitor the change of the blood state of a wound.
A blood status display apparatus comprising: an alternating current supply unit, at least one pair of electrodes, a timer, a voltage detection unit, and a display unit,
the alternating current providing part is used for providing alternating current with constant magnitude for the at least one pair of electrodes;
the at least one pair of electrodes is arranged on the part to be detected, and is used for receiving the alternating current provided by the alternating current providing part and outputting the alternating current to the part to be detected;
the timer is used for setting a detection time interval, starting timing when the current passes through the at least one pair of electrodes, and triggering the voltage detection part when the timing reaches integral multiple of the time interval;
the voltage detection part is used for detecting a voltage value generated by the part to be detected when the trigger of the timer is received;
and the display part is used for displaying the signal intensity corresponding to the voltage value according to the voltage value detected by the voltage detection part.
Preferably, the above blood condition display apparatus, further comprising: a voltage amplifier, wherein,
the voltage amplifier is respectively connected with the voltage detection part and the display part and is used for acquiring the voltage value detected by the voltage detection part and amplifying the voltage value;
and the display part is used for displaying the signal intensity corresponding to the voltage value according to the voltage value amplified by the voltage amplifier.
Preferably, the display unit includes: a signal intensity calculating sub-section, a signal amplifier and a display, wherein,
the signal intensity calculating sub-section is used for setting a first voltage threshold and a second voltage threshold and calculating the first signal intensity of each time point according to the following signal intensity calculating formula (1);
signal strength calculation formula:
Figure BDA0001099490350000021
wherein, yiCharacterizing a first signal strength at an ith time point; u shapeiCharacterizing voltage amplifier at ith time pointA large voltage value; u' characterizes a first voltage threshold; u' characterizes a second voltage threshold; beta represents a correction coefficient; u shape1Representing the amplified voltage value of the voltage amplifier at the 1 st time point; t represents the time interval set by the timer;
the signal amplifier is used for amplifying the first signal intensity of each time point obtained by the signal intensity calculating sub-part to form corresponding second signal intensity and outputting the second signal intensity to the display;
the display is used for receiving the second signal intensity corresponding to each time point output by the signal amplifier and displaying the second signal intensity corresponding to each time point.
Preferably, the above blood condition display apparatus, further comprising: an alarm part, wherein,
the signal intensity calculating sub-part is further used for determining that thrombus is generated when the first signal intensity of the current time point is calculated to be K, generating a first alarm signal and sending the first alarm signal to the alarm part; when the signal intensity of the current time point is calculated to be-K, determining that blood leakage is generated, generating a second alarm signal, and sending the second alarm signal to the alarm part;
the alarm part is used for sending out a thrombus alarm when receiving the first alarm signal; and when the second alarm signal is received, a blood leakage alarm is sent out.
Preferably, the display is further configured to:
setting a first display color corresponding to the thrombus state, a second display color corresponding to the blood leakage state and a third display color corresponding to the normal state, and displaying the second signal intensity corresponding to K through the first display color when the second signal intensity corresponding to K is received; when a second signal intensity corresponding to-K is received, displaying the second signal intensity corresponding to-K through the second display color; when receiving
Figure BDA0001099490350000031
When the corresponding second signal strength is passedThe third display color displays
Figure BDA0001099490350000032
Corresponding second signal strength.
Preferably, the site to be detected comprises: a wound;
each pair of detection electrodes includes: an adhesive layer;
each pair of detection electrodes is adhered to the skin surface 0-10cm away from the wound edge through the adhesion layer;
and a connecting line of the adhesion position of the first detection electrode and the adhesion position of the second detection electrode in each pair of detection electrodes penetrates through the wound.
A blood state display method for determining a site to be detected, disposing at least one pair of electrodes at the site to be detected, and setting a detection time interval for a timer, further comprising:
supplying an alternating current of a constant magnitude to the at least one pair of electrodes by an alternating current supply section;
outputting the alternating current to the part to be detected through the at least one pair of electrodes;
starting the timer for timing, and detecting the voltage value generated by the part to be detected through a voltage detection part when the timing reaches the integral multiple of the time interval;
and displaying the signal intensity corresponding to the voltage value through a display part.
Preferably, the first and second electrodes are formed of a metal,
after the voltage value generated by the to-be-detected part is detected by the voltage detection part, before the signal intensity corresponding to the voltage value is displayed by the display part, the method further comprises the following steps:
amplifying the voltage value by a voltage amplifier;
the displaying the signal intensity corresponding to the voltage value according to the voltage value detected by the voltage detection part comprises: and displaying the signal intensity corresponding to the voltage value according to the voltage value amplified by the voltage amplifier.
Preferably, the above method further comprises: providing a corresponding adhesive layer for each pair of detection electrodes;
the part to be detected comprises: a wound;
the at least one pair of electrodes is arranged at the part to be detected, and comprises: and adhering the at least one pair of electrodes to the skin surface 0-10cm away from the edge of the wound through the adhesion layer, wherein a connecting line of the adhesion position of the first detection electrode and the adhesion position of the second detection electrode in each pair of detection electrodes penetrates through the wound.
Preferably, the above method further comprises: setting a first voltage threshold and a second voltage threshold;
the displaying the signal intensity corresponding to the voltage value according to the amplified voltage value of the voltage amplifier includes:
calculating a first signal intensity at each time point according to the following signal intensity calculation formula (1);
signal strength calculation formula:
Figure BDA0001099490350000041
wherein, yiCharacterizing a first signal strength at an ith time point; u shapeiRepresenting the amplified voltage value of the voltage amplifier at the ith time point; u' characterizes a first voltage threshold; u' characterizes a second voltage threshold; beta represents a correction coefficient; u shape1Representing the amplified voltage value of the voltage amplifier at the 1 st time point; t represents the time interval set by the timer;
amplifying the first signal intensity of each time point through a signal amplifier to form corresponding second signal intensity;
and receiving and displaying the second signal intensity corresponding to each time point through the display.
Preferably, the first and second electrodes are formed of a metal,
after the calculating the first signal strength of each time point, further comprising: when the first signal intensity of the current time point is calculated to be K, generating a first alarm signal, and sending out a thrombus alarm through an alarm part by using the first alarm signal; and when the signal intensity of the current time point is calculated to be-K, generating a second alarm signal, and sending a blood leakage alarm through the alarm part by using the second alarm signal.
Preferably, the above method further comprises: setting a first display color corresponding to the thrombus state, a second display color corresponding to the blood leakage state and a third display color corresponding to the normal state for the display;
the receiving and displaying the second signal strength corresponding to each time point through the display comprises: when a second signal intensity corresponding to K is received, displaying the second signal intensity corresponding to K through the first display color; when a second signal intensity corresponding to-K is received, displaying the second signal intensity corresponding to-K through the second display color; when receiving
Figure BDA0001099490350000051
When the corresponding second signal intensity is reached, the third display color is used for displaying the signal
Figure BDA0001099490350000052
Corresponding second signal strength.
The embodiment of the invention provides a blood state display device and a method, wherein alternating current with constant magnitude is provided for at least one pair of electrodes by an alternating current providing part; receiving the alternating current provided by the alternating current providing part through at least one pair of electrodes arranged on the part to be detected, and outputting the alternating current to the part to be detected, wherein when the alternating current is constant, the impedance change of the part to be detected can cause the change of the voltage generated by the part to be detected, namely the change of the voltage can show the blood state of the part to be detected, and then, the voltage value generated by the part to be detected is detected through the voltage detecting part at regular time intervals; and the display part displays the signal intensity corresponding to the voltage value according to the voltage value detected by the voltage detection part, so that the change of the blood state at the wound can be monitored.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a blood status display apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a blood status display apparatus according to another embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a blood status display apparatus according to another embodiment of the present invention;
FIG. 4 is a waveform illustrating a blood condition displayed on the display according to an embodiment of the present invention;
FIG. 5 is a waveform illustrating another blood condition displayed on the display according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of a blood status display apparatus according to another embodiment of the present invention;
FIG. 7 is a flow chart of a method for displaying a blood status according to an embodiment of the present invention;
FIG. 8 is a flow chart of a method for displaying a blood status according to another embodiment of the present invention;
fig. 9 is a schematic view of an electrode according to an embodiment of the present invention attached to the wound periphery.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention, and based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a blood condition display apparatus including: an alternating current supply unit 101, at least one pair of electrodes 102, a timer 103, a voltage detection unit 104, and a display unit 105, wherein,
the alternating current supply part 101 is used for supplying alternating current with constant magnitude to the at least one pair of electrodes 102;
the at least one pair of electrodes 102 is arranged on the part to be detected, and is used for receiving the alternating current provided by the alternating current providing part 101 and outputting the alternating current to the part to be detected;
a timer 103 for setting a detection time interval, starting timing when a current passes through the at least one pair of electrodes 102, and triggering the voltage detection part 104 when the timing reaches an integral multiple of the time interval;
the voltage detection part 104 is used for detecting a voltage value generated by the part to be detected when the trigger of the timer 103 is received;
the display unit 105 is configured to display the signal intensity corresponding to the voltage value detected by the voltage detection unit 104.
In the embodiment shown in fig. 1, an alternating current of a constant magnitude is supplied to at least one pair of electrodes by an alternating current supply section; receiving the alternating current provided by the alternating current providing part through at least one pair of electrodes arranged on the part to be detected, and outputting the alternating current to the part to be detected, wherein when the alternating current is constant, the impedance change of the part to be detected can cause the change of the voltage generated by the part to be detected, namely the change of the voltage can show the blood state of the part to be detected, and then, the voltage value generated by the part to be detected is detected through the voltage detecting part at regular time intervals; and the display part displays the signal intensity corresponding to the voltage value according to the voltage value detected by the voltage detection part, so that the change of the blood state at the wound can be monitored.
As shown in fig. 2, in another embodiment of the present invention, in order to make the blood state change display more obvious at different times, the blood state display apparatus further includes: a voltage amplifier 201, in which,
the voltage amplifier 201 is connected to the voltage detection unit 104 and the display unit 105, and is configured to acquire the voltage value detected by the voltage detection unit 104 and amplify the voltage value;
the display unit 105 is configured to display the signal intensity corresponding to the voltage value according to the voltage value amplified by the voltage amplifier 201.
For example: one voltage value corresponds to one electric signal, and the electric signals corresponding to different voltage values are displayed through the display part, so that the change of the blood state can be reflected. Then, when the voltage value measured by the voltage detection part is amplified by the voltage amplifier by 10 times, the voltage values are 1V and 2V and are changed into 10V and 20V after being amplified by the voltage amplifier, so that the difference between the two voltage values is greatly increased, the difference of electric signals corresponding to the amplified voltage values of 10V and 20V is greatly improved, the electric signals with larger difference are displayed by the display part to reflect the blood state, the blood state with smaller difference can be obviously displayed, the accuracy of blood state display is improved, and more accurate blood state data can be provided for medical staff.
As shown in fig. 3, in another embodiment of the present invention, in order to convert the voltage value into the corresponding signal strength and display the corresponding signal strength on the display unit to represent the corresponding blood state, the display unit 105 includes: a signal strength calculating sub-section 301, a signal amplifier 302, and a display 303, wherein,
the signal intensity calculating sub-section 301 is configured to set a first voltage threshold and a second voltage threshold, and calculate a first signal intensity at each time point according to the following signal intensity calculation formula (1);
signal strength calculation formula:
Figure BDA0001099490350000081
wherein, yiCharacterizing a first signal strength at an ith time point; u shapeiRepresenting the amplified voltage value of the voltage amplifier at the ith time point; u' characterizes a first voltage threshold; u' characterizes a second voltage threshold; beta represents a correction coefficient; u shape1Representing the amplified voltage value of the voltage amplifier at the 1 st time point; t represents the time interval set by the timer;
the signal amplifier 302 is configured to amplify the first signal strength at each time point calculated by the signal strength calculating sub-section 301 to form a corresponding second signal strength, and output the second signal strength to the display 303;
the display 303 is configured to receive the second signal strength corresponding to each time point output by the signal amplifier 302, and display the second signal strength corresponding to each time point.
In this embodiment, the first voltage threshold set by the signal intensity calculating sub-section is a threshold for blood leakage, that is, when the detected voltage is less than the first voltage threshold, the blood state is blood leakage; the second voltage threshold is a critical threshold of the thrombus, that is, when the detected voltage is greater than the second voltage threshold, the blood state is the thrombus; as can be seen from the above signal intensity calculation formula (1), when the blood state is blood leakage, an electric signal with constant intensity of-K is calculated, that is, a straight line parallel to the time axis is formed when blood leakage occurs, when the blood state is normal, the electric signal intensities corresponding to each time point form a waveform diagram which fluctuates up and down in a certain range according to the amplified voltage value, when the blood state is thrombus, an electric signal with constant intensity of-K is calculated, that is, a straight line parallel to the time axis is also formed when thrombus occurs, wherein the straight lines formed by blood leakage and thrombus are respectively positioned at two sides of the time axis, and the straight line formed by blood leakage is positioned at the lower side of the waveform diagram corresponding to the blood state normally, that is, -K is smaller than that of the normal
Figure BDA0001099490350000091
The calculated signal intensity of any one of the thrombus is that the straight line formed by the thrombus is positioned at the upper side of the oscillogram corresponding to the normal blood state, namely K is greater than K
Figure BDA0001099490350000092
Any one of the resulting signal strengths is calculated. In addition, in order to further improve the difference in display, the first signal intensities calculated by the signal intensity calculating sub-section are further expanded by the signal amplifier, the difference between the signal intensities is increased, and the difference is displayed by the display.
For example: as shown in fig. 4, if the time points are plotted on the abscissa and the signal intensity is plotted on the ordinate, it is worth explaining that the time interval of each time point is the detection time interval set by the timer. When the amplification factor of the signal amplifier is 10 times, it can be seen from the figure that, in the initial period of time, for example, in the range from time point 0 to time point 10, the blood state is normal, the signal intensity fluctuates around 10 β, when the subsequent period of time, for example, in the range from time point 11 to time point 20, the amplified voltage value of the voltage amplifier exceeds the second threshold, at this time, when the amplification factor of the signal amplifier is 10 times, the signal intensity is constant at 10K, a straight line parallel to the abscissa in the first quadrant of the coordinate system is output, and the K value is larger than the K value
Figure BDA0001099490350000093
When the medical staff observes the straight line, the blood state of the part to be detected of the patient can be determined to have thrombus, and corresponding treatment countermeasures or schemes can be made in time.
In order to more clearly show the difference between the different display displays of the blood status, the embodiment of the present invention further takes the waveform shown in fig. 5 as an example, as shown in fig. 5, the blood status is normal in the range from time 0 to time 10 in the initial period of timeWhen the signal intensity fluctuates around 10 beta, the amplified voltage value of the voltage amplifier is smaller than a first threshold value when the subsequent time period is reached, such as the range from a time point 11 to a time point 20, at the moment, the signal intensity is constant to be a-K value, a straight line parallel to the abscissa and positioned in a fourth quadrant of the coordinate system is output, and the-K value is smaller than
Figure BDA0001099490350000101
The calculated signal intensity of any one signal, namely the signal intensity curve corresponding to the blood leakage, is a straight line parallel to the abscissa and is positioned below the curve corresponding to the normal blood flow, and medical personnel can visually observe the blood leakage in the blood state through the oscillogram displayed by the display, so that the blood leakage is timely treated correspondingly, and the patient is prevented from symptoms caused by the blood leakage.
As shown in fig. 6, in another embodiment of the present invention, the blood status display apparatus further includes: the alarm portion 601, wherein,
the signal intensity calculating sub-section 301 is further configured to determine that a thrombus is generated when the first signal intensity at the current time point is calculated to be K, generate a first alarm signal, and send the first alarm signal to the alarm section 601; when the signal intensity at the current time point is calculated to be-K, determining that blood leakage occurs, generating a second alarm signal, and sending the second alarm signal to the alarm part 601;
the alarm part 601 is used for sending out a thrombus alarm when receiving the first alarm signal; and when the second alarm signal is received, a blood leakage alarm is sent out.
The alarm part of the embodiment realizes the alarm for blood state abnormity such as thrombus or blood leakage, so that the patient can judge the blood flow abnormity of the part to be detected according to the alarm under the condition without medical care personnel, the medical care personnel can be called in time, and the safety of the patient is further ensured.
In another embodiment of the present invention, to further improve the display variability, the display 303 is further configured to: setting a first display color corresponding to the thrombus state and a second display color corresponding to the blood leakage stateThe display color and the third display color corresponding to the normal state are used for displaying the second signal intensity corresponding to the K through the first display color when the second signal intensity corresponding to the K is received; when a second signal intensity corresponding to-K is received, displaying the second signal intensity corresponding to-K through the second display color; when receiving
Figure BDA0001099490350000102
When the corresponding second signal intensity is reached, the third display color is used for displaying the signalCorresponding second signal strength. For example: red is set for blood leakage, black is set for thrombus, and green is set for normal state, so when the blood state is blood leakage, the color of the displayed signal intensity is red, namely, a red straight line is formed, when the blood state is thrombus, the color of the displayed signal intensity is black, namely, a black straight line is formed, and when the blood state is normal, the color of the displayed signal intensity is green, namely, a green fluctuation curve is formed.
In another embodiment of the present invention, the site to be detected comprises: a wound;
each pair of detection electrodes includes: an adhesive layer;
each pair of detection electrodes is adhered to the skin surface 0-10cm away from the wound edge through the adhesion layer;
and a connecting line of the adhesion position of the first detection electrode and the adhesion position of the second detection electrode in each pair of detection electrodes penetrates through the wound.
Because the information interaction, execution process, and other contents between the units in the device are based on the same concept as the method embodiment of the present invention, specific contents may refer to the description in the method embodiment of the present invention, and are not described herein again.
As shown in fig. 7, an embodiment of the present invention provides a blood status display method, which may include the following steps:
step 701: determining a part to be detected, arranging at least one pair of electrodes on the part to be detected, and setting a detection time interval for a timer;
step 702: supplying an alternating current of a constant magnitude to the at least one pair of electrodes by an alternating current supply section;
step 703: outputting the alternating current to the part to be detected through the at least one pair of electrodes;
step 704: starting the timer for timing, and detecting the voltage value generated by the part to be detected through a voltage detection part when the timing reaches the integral multiple of the time interval;
step 705: and displaying the signal intensity corresponding to the voltage value through a display part.
In one embodiment of the present invention, after step 704 and before step 705, in order to accurately display the variability of the blood status, the method further includes: amplifying the voltage value by a voltage amplifier; the specific implementation of step 705 includes: displaying the signal intensity corresponding to the voltage value according to the amplified voltage value of the voltage amplifier; for example: the voltages of 2 time points are detected to be 1V and 2V respectively, the voltages are amplified by 10 times through the voltage amplifier and then are changed into 10V and 20V, the difference between the voltages is increased, the difference of the blood states displayed through the display part according to the voltages can be correspondingly increased, medical staff can observe the change of the blood states visually due to the increase of the difference, and even tiny changes can be displayed after the voltage values are amplified.
In an embodiment of the present invention, in order to facilitate the connection between the electrode and the site to be detected, the method further includes: providing a corresponding adhesive layer for each pair of detection electrodes; the part to be detected comprises: a wound; the at least one pair of electrodes is arranged at the part to be detected, and comprises: and adhering the at least one pair of electrodes to the skin surface 0-10cm away from the edge of the wound through the adhesion layer, wherein a connecting line of the adhesion position of the first detection electrode and the adhesion position of the second detection electrode in each pair of detection electrodes penetrates through the wound. The monitoring of the blood state at the wound is realized through the process.
In an embodiment of the present invention, in order to display the blood condition more clearly through the display, the method further includes: setting a first voltage threshold and a second voltage threshold; wherein, the first voltage threshold is a voltage critical value corresponding to slight blood leakage, namely when the voltage detected by the voltage detection part is lower than the first voltage threshold, the blood state is blood leakage; the second voltage threshold value is a voltage threshold value corresponding to the slight thrombus, namely, when the voltage detected by the voltage detection part is greater than the second voltage threshold value, the blood state is the thrombus; then, in order to display the thrombus, blood leakage, and normal state through the display, an embodiment of step 705 includes: calculating a first signal intensity at each time point according to the following signal intensity calculation formula (1);
signal strength calculation formula:
wherein, yiCharacterizing a first signal strength at an ith time point; u shapeiRepresenting the amplified voltage value of the voltage amplifier at the ith time point; u' characterizes a first voltage threshold; u' characterizes a second voltage threshold; beta represents a correction coefficient; u shape1Representing the amplified voltage value of the voltage amplifier at the 1 st time point; t represents the time interval set by the timer;
amplifying the first signal intensity of each time point through a signal amplifier to form corresponding second signal intensity; and receiving and displaying the second signal intensity corresponding to each time point through the display. For example: when the detection part detects that the voltage values corresponding to the time point 1 to the time point 10 are 2V, 1.8V, 1.9V, 2V, 2V, 2.5V, 5V, 6V, 8V and 10V in sequence, the voltage values are amplified by 10 times through an amplifier to become U1＝20V，U2＝18V，U3＝19V，U4＝20V，U5＝20V，U6＝25V，U7＝50V，U8＝60V，U980V and U10100V, with a second voltage threshold of 40V, will be calculated by the above signal strength calculation equation (1)U1＝20V，U2＝18V，U3＝19V，U4＝20V，U5＝20V，U6Substituted at 25VAnd (3) assuming that the time interval is 1s, calculating the first signal intensity corresponding to each voltage value: y is1＝β，y2＝βcos(-2)，
Figure BDA0001099490350000132
y4＝β，y5＝β，y6β cos (1) due to U7＝50V，U8＝60V，U980V and U10100V are all greater than the first voltage threshold 40V, then y7＝y8＝y9＝y10Amplifying the first signal intensity by a signal amplifier, and when the voltage is greater than a first voltage threshold and less than a second voltage threshold, passing
Figure BDA0001099490350000133
If the calculated first signal intensity does not exceed β, the blood condition can be directly judged as thrombus by setting the value of K to a value greater than β when the display outputs a signal intensity of K. Accordingly, for blood leakage, if-K is smaller than- β, then the blood status can be visually recognized as blood leakage when the second signal strength output by the display is-K.
In an embodiment of the present invention, in order to remind the patient of blood leakage or thrombus in time, after the calculating the first signal intensity at each time point, the method further includes: when the first signal intensity of the current time point is calculated to be K, determining that thrombus is generated, generating a first alarm signal, and sending out a thrombus alarm through an alarm part by using the first alarm signal; when the signal intensity of the current time point is calculated to be-K, determining that blood leakage is generated, generating a second alarm signal, and sending out a blood leakage alarm through an alarm part by using the second alarm signal; through setting up different alarm signal, can realize carrying out different warnings to hourglass blood or thrombus, make patient or medical personnel can in time carry out corresponding processing.
In an embodiment of the present invention, to further ensure the visibility of the display, the method further includes: setting a first display color corresponding to the thrombus state, a second display color corresponding to the blood leakage state and a third display color corresponding to the normal state for the display; the receiving and displaying the second signal strength corresponding to each time point through the display comprises: when a second signal intensity corresponding to K is received, displaying the second signal intensity corresponding to K through the first display color; when a second signal intensity corresponding to-K is received, displaying the second signal intensity corresponding to-K through the second display color; when receiving
Figure BDA0001099490350000134
When the corresponding second signal intensity is reached, the third display color is used for displaying the signal
Figure BDA0001099490350000141
Corresponding second signal strength. Through the different colors corresponding to different states, the medical staff can judge the blood state not only from the waveform output by the display, but also from the display color.
The following description will be made by taking monitoring and displaying the blood state of a wound as an example, and as shown in fig. 8, the method may include the following steps:
step 801: arranging at least one pair of electrodes on the wound, setting a detection time interval for a timer, and setting a first voltage threshold and a second voltage threshold;
in this step, each pair of detection electrodes includes an adhesive layer, and each pair of detection electrodes is adhered to the periphery of the wound through the adhesive layer, as shown in fig. 9, each pair of detection electrodes 901 is adhered to the periphery of the wound 902 through the adhesive layer, wherein each pair of detection electrodes is located on the skin surface at a distance of 0-10cm from the edge of the wound, and a connection line connecting the adhesion position of the first detection electrode and the adhesion position of the second detection electrode in each pair of detection electrodes passes through the wound.
The detection time interval set in this step is mainly for making the time interval of the voltage values detected by the voltage detection section uniform, and if the detection time interval is set to 1s, that is, the voltage detection section detects the voltage generated at the wound every time the timer reaches an integral multiple of 1s, 2s, 3s, … …, or the like.
The first voltage threshold is a voltage critical value when slight blood leakage occurs, and the impedance of the wound is reduced due to the blood leakage process, so that the occurrence of the wound blood leakage can be determined when the voltage value detected by the voltage detection part is smaller than the first voltage threshold. The second voltage threshold is a voltage critical value when slight thrombus is generated, the impedance of the wound is increased due to the thrombus process, and then when the voltage value detected by the voltage detection part is larger than the second voltage threshold, the generation of the thrombus of the wound can be determined.
Step 802: setting a first display color corresponding to the thrombus state, a second display color corresponding to the blood leakage state and a third display color corresponding to the normal state for a display;
this procedure is mainly to make the display show different colors for different blood states, such as: setting red for blood leakage, black for thrombus and green for normal setting, so that when the blood state is blood leakage, the color of the displayed signal intensity is red; when the blood state is thrombus, the color of the displayed signal intensity is black; when the blood condition is normal, the color of the displayed signal intensity is green.
Step 803: supplying an alternating current of a constant magnitude to the at least one pair of electrodes by an alternating current supply section;
this step output invariable size alternating current like the certain size electric current that human body can bear, can guarantee the security through human electric current, if through output invariable voltage, when taking place the blood leakage, the impedance of wound reduces, probably leads to electric current to increase outside the scope that the human body can bear, causes certain threat to human life safety, has ensured the security that electric current passes through the human body through constant current promptly.
Step 804: outputting the alternating current to the wound through the at least one pair of electrodes;
step 805: starting the timer for timing, and detecting the voltage value generated by the wound through a voltage detection part when the timing reaches the integral multiple of the time interval;
the detection time interval set in step 801 is set to 1s, that is, when the timer reaches each integer multiple of 1s, for example, 1s at time point 1, 2s at time point 2, 3s at time point 3, … …, etc., the voltage detection unit detects the corresponding voltage generated at the time point by the wound. For example, in this step, the detection unit detects that the voltage values corresponding to time 1 to time 10 are 2V, 1.8V, 1.9V, 2V, 2.5V, 5V, 6V, 8V, and 10V in this order.
Step 806: amplifying the voltage value by a voltage amplifier;
in this step, the voltage value can be amplified by a factor of 10, 20, etc., which is mainly associated with a voltage amplifier, such as: when the amplification is 10 times, the detection part detects that the voltage values corresponding to the time point 1 to the time point 10 are 2V, 1.8V, 1.9V, 2V, 2V, 2.5V, 5V, 6V, 8V and 10V in sequence, and the voltage values become U after amplification1＝20V，U2＝18V，U3＝19V，U4＝20V，U5＝20V，U6＝25V，U7＝50V，U8＝60V，U980V and U10＝100V。
Step 807: calculating a first signal strength at each time point, and executing step 808; and when the first signal strength at the current time point is K, executing step 810; when the first signal strength at the current time point is-K, performing step 811;
the calculation process of the step is mainly realized according to the following signal intensity calculation formula (1):
Figure BDA0001099490350000151
wherein, yiCharacterizing a first signal strength at an ith time point; u shapeiRepresenting the amplified voltage value of the voltage amplifier at the ith time point; u' characterizes a first voltage threshold; u' characterizes a second voltage threshold; beta characterizationA correction factor; u shape1Representing the amplified voltage value of the voltage amplifier at the 1 st time point; t represents the time interval set by the timer;
as can be seen from the signal intensity calculation formula (1), when the amplified voltage value is greater than the second voltage threshold, which is already mentioned above as the thrombus critical value, a fixed signal with a signal intensity of K is output; when the amplified voltage value is larger than the first voltage threshold and smaller than the second voltage threshold, the signal intensity is related to the time point and the voltage change value, and the signal intensity fluctuates between beta and-beta to form a certain oscillogram>Beta can ensure that the subsequent display displays the difference of abnormal blood states (thrombus or blood leakage). For example: u obtained in the above step1＝20V，U2＝18V，U3＝19V，U4＝20V，U5＝20V，U6＝25V，U7＝50V，U8＝60V，U980V and U10The second voltage threshold is 40V when 100V is obtained, and the signal intensity calculation formula (1) is substituted, that is, U1＝20V，U2＝18V，U3＝19V，U4＝20V，U5＝20V，U6Substituted at 25V
Figure BDA0001099490350000161
And (3) assuming that the time interval is 1s, calculating the first signal intensity corresponding to each voltage value: y is1＝β，y2＝βcos(-2)，
Figure BDA0001099490350000162
y4＝β，y5＝β，y6β cos (1) due to U7＝50V，U8＝60V，U980V and U10100V are all greater than the first voltage threshold 40V, then y7＝y8＝y9＝y10Amplifying the first signal intensity by a signal amplifier, and when the voltage is greater than a first voltage threshold and less than a second voltage threshold, passing
Figure BDA0001099490350000163
If the calculated first signal intensity does not exceed β, the blood condition can be directly judged as thrombus by setting the value of K to a value greater than β when the display outputs a signal intensity of K. Accordingly, for blood leakage, if-K is smaller than- β, then the blood status can be visually recognized as blood leakage when the second signal strength output by the display is-K.
Step 808: amplifying the first signal intensity of each time point through a signal amplifier to form corresponding second signal intensity;
in this step, the first signal intensity calculated in step 807 is further amplified, so that the difference between the signal intensities can be further enhanced, and the change of the blood state of the wound can be clearly and accurately shown by the change of the signal intensity in the subsequent display process.
Step 809: receiving and displaying the second signal intensity corresponding to each time point through the display according to the set display color, and finishing the current process;
in this step, when receiving a second signal intensity corresponding to K, displaying the second signal intensity corresponding to K through the first display color; when a second signal intensity corresponding to-K is received, displaying the second signal intensity corresponding to-K through the second display color; when receiving
Figure BDA0001099490350000171
When the corresponding second signal intensity is reached, the third display color is used for displaying the signal
Figure BDA0001099490350000172
Corresponding second signal strength. If the color displayed in step 802 is set to red for blood leakage, black for thrombus, and green for normal setting, then the output second signal intensity corresponding to K is displayed in black, and the second signal intensity corresponding to-K is displayed in red; by means of a green display
Figure BDA0001099490350000173
Corresponding second signal strength, and so on.
Step 810: generating a first alarm signal, sending a thrombus alarm through an alarm part by using the first alarm signal, and finishing the current process;
step 811: and generating a second alarm signal, sending a blood leakage alarm through the alarm part by using the second alarm signal, and finishing the current process.
Steps 810 and 811 are mainly for sending an alarm to remind the patient or the medical staff to perform corresponding treatment in time when blood is abnormal, such as thrombus or blood leakage.
According to the scheme, the embodiments of the invention have at least the following beneficial effects:
1. supplying an alternating current of a constant magnitude to at least one pair of electrodes by an alternating current supply section; receiving the alternating current provided by the alternating current providing part through at least one pair of electrodes arranged on the part to be detected, and outputting the alternating current to the part to be detected, wherein when the alternating current is constant, the impedance change of the part to be detected can cause the change of the voltage generated by the part to be detected, namely the change of the voltage can show the blood state of the part to be detected, and then, the voltage value generated by the part to be detected is detected through the voltage detecting part at regular time intervals; and the display part displays the signal intensity corresponding to the voltage value according to the voltage value detected by the voltage detection part, so that the change of the blood state at the wound can be monitored.
2. The voltage amplifier is used for acquiring the voltage value detected by the voltage detection part and amplifying the voltage value, and the display part displays the signal intensity corresponding to the voltage value according to the voltage value amplified by the voltage amplifier.
3. The signal intensity calculating sub-part realizes that the signal intensity of different time points is calculated by utilizing the voltage value so as to reflect the blood state through the signal intensity, and in addition, the signal amplifier amplifies the signal intensity so that the difference of the signal intensity of different time points is more obvious, thereby further ensuring the accuracy of the blood state display and also being capable of visually providing the blood state display for medical staff to refer.
4. When the signal intensity calculating sub-part calculates that the first signal intensity of the current time point is K, determining that thrombus is generated, generating a first alarm signal and sending the first alarm signal to the alarm part; when the signal intensity of the current time point is calculated to be-K, determining that blood leakage is generated, generating a second alarm signal, and sending the second alarm signal to the alarm part; the alarm part sends out a thrombus alarm when receiving the first alarm signal; when the second alarm signal is received, the blood leakage alarm is sent out, the abnormal alarm for the blood state is realized, and the purpose of reminding is achieved, so that medical care personnel can timely process the abnormal alarm.
5. The method comprises the steps that a first display color corresponding to a thrombus state, a second display color corresponding to a blood leakage state and a third display color corresponding to a normal state are set, and when a second signal intensity corresponding to K is received, the second signal intensity corresponding to K is displayed through the first display color; when a second signal intensity corresponding to-K is received, displaying the second signal intensity corresponding to-K through the second display color; when receiving
Figure BDA0001099490350000181
When the corresponding second signal intensity is reached, the third display color is used for displaying the signal
Figure BDA0001099490350000182
And the corresponding second signal intensity is used for further displaying the curve corresponding to the blood state through different colors, so that the display of the blood state is more obvious.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a" does not exclude the presence of other similar elements in a process, method, article, or apparatus that comprises the element.
Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it is to be noted that: the above description is only a preferred embodiment of the present invention, and is only used to illustrate the technical solutions of the present invention, and not to limit the protection scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims (6)

1. A blood status display apparatus, comprising: an alternating current supply unit, at least one pair of electrodes, a timer, a voltage detection unit, and a display unit,
the alternating current providing part is used for providing alternating current with constant magnitude for the at least one pair of electrodes;
the at least one pair of electrodes is arranged on the part to be detected, and is used for receiving the alternating current provided by the alternating current providing part and outputting the alternating current to the part to be detected;
the timer is used for setting a detection time interval, starting timing when current passes through at least one pair of electrodes, and triggering the voltage detection part when the timing reaches integral multiple of the time interval;
the voltage detection part is used for detecting a voltage value generated by the part to be detected when the trigger of the timer is received;
the display part is used for displaying the signal intensity corresponding to the voltage value according to the voltage value detected by the voltage detection part;
further comprising: a voltage amplifier, wherein,
the voltage amplifier is respectively connected with the voltage detection part and the display part and is used for acquiring the voltage value detected by the voltage detection part and amplifying the voltage value;
the display part is used for displaying the signal intensity corresponding to the voltage value according to the voltage value amplified by the voltage amplifier;
the display section includes: a signal intensity calculating sub-section, a signal amplifier and a display, wherein,
the signal intensity calculating sub-section is used for setting a first voltage threshold and a second voltage threshold and calculating the first signal intensity of each time point according to the following signal intensity calculating formula;
signal strength calculation formula:
Figure FDA0002264485580000011
wherein, yiCharacterizing a first signal strength at an ith time point; u shapeiRepresenting the amplified voltage value of the voltage amplifier at the ith time point; u' characterizes a first voltage threshold; u' characterizes a second voltage threshold; beta represents a correction coefficient; u shape1Representing the amplified voltage value of the voltage amplifier at the 1 st time point; t represents the time interval set by the timer;
the signal amplifier is used for amplifying the first signal intensity of each time point obtained by the signal intensity calculating sub-part to form corresponding second signal intensity and outputting the second signal intensity to the display;
the display is used for receiving the second signal intensity corresponding to each time point output by the signal amplifier and displaying the second signal intensity corresponding to each time point.
2. The blood status display apparatus according to claim 1, further comprising: an alarm part, wherein,
the signal intensity calculating sub-part is further used for determining that thrombus is generated when the first signal intensity of the current time point is calculated to be K, generating a first alarm signal and sending the first alarm signal to the alarm part; when the signal intensity of the current time point is calculated to be-K, determining that blood leakage is generated, generating a second alarm signal, and sending the second alarm signal to the alarm part;
the alarm part is used for sending out a thrombus alarm when receiving the first alarm signal; and when the second alarm signal is received, a blood leakage alarm is sent out.
3. The blood status display apparatus of claim 1, wherein the display is further configured to:
setting a first display color corresponding to the thrombus state, a second display color corresponding to the blood leakage state and a third display color corresponding to the normal state, and displaying the second signal intensity corresponding to K through the first display color when the second signal intensity corresponding to K is received; when a second signal intensity corresponding to-K is received, displaying the second signal intensity corresponding to-K through the second display color; when receiving
Figure FDA0002264485580000021
When the corresponding second signal intensity is reached, the third display color is used for displaying the signal
Figure FDA0002264485580000022
Corresponding second signal strength.
4. The blood status display apparatus according to any one of claims 1 to 3, wherein the site to be detected includes: a wound;
each pair of detection electrodes includes: an adhesive layer;
each pair of detection electrodes is adhered to the skin surface 0-10cm away from the wound edge through the adhesion layer;
and a connecting line of the adhesion position of the first detection electrode and the adhesion position of the second detection electrode in each pair of detection electrodes penetrates through the wound.
5. A blood status display method characterized by determining a site to be detected, disposing at least one pair of electrodes at the site to be detected, and setting a detection time interval for a timer, further comprising:
supplying an alternating current of a constant magnitude to the at least one pair of electrodes by an alternating current supply section;
outputting the alternating current to the part to be detected through the at least one pair of electrodes;
starting the timer for timing, and detecting the voltage value generated by the part to be detected through a voltage detection part when the timing reaches the integral multiple of the time interval;
displaying the signal intensity corresponding to the voltage value through a display part;
after the voltage value generated by the to-be-detected part is detected by the voltage detection part, before the signal intensity corresponding to the voltage value is displayed by the display part, the method further comprises the following steps:
amplifying the voltage value by a voltage amplifier;
the displaying the signal intensity corresponding to the voltage value according to the voltage value detected by the voltage detection part comprises: displaying the signal intensity corresponding to the voltage value according to the amplified voltage value of the voltage amplifier;
and/or the presence of a gas in the gas,
further comprising: providing a corresponding adhesive layer for each pair of detection electrodes;
the part to be detected comprises: a wound;
the at least one pair of electrodes is arranged at the part to be detected, and comprises: and adhering the at least one pair of electrodes to the skin surface 0-10cm away from the edge of the wound through the adhesion layer, wherein a connecting line of the adhesion position of the first detection electrode and the adhesion position of the second detection electrode in each pair of detection electrodes penetrates through the wound.
6. The method of claim 5, further comprising: setting a first voltage threshold and a second voltage threshold;
the displaying the signal intensity corresponding to the voltage value according to the amplified voltage value of the voltage amplifier includes:
calculating a first signal intensity of each time point according to the following signal intensity calculation formula;
signal strength calculation formula:
wherein, yiCharacterizing a first signal strength at an ith time point; u shapeiRepresenting the amplified voltage value of the voltage amplifier at the ith time point; u' characterizes a first voltage threshold; u' characterizes a second voltage threshold; beta represents a correction coefficient; u shape1Representing the amplified voltage value of the voltage amplifier at the 1 st time point; t represents the time interval set by the timer;
amplifying the first signal intensity of each time point through a signal amplifier to form corresponding second signal intensity;
and receiving and displaying the second signal intensity corresponding to each time point through the display part.
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GB2033575A (en) * 1978-05-24 1980-05-21 Rolfe P Investigating substances in a patient's bloodstream
CN1596826A (en) * 2004-07-27 2005-03-23 天津大学 Non-invasive detection device of pulse impedance spectrum blood sugar or other biood component and its detection method
CN102481112A (en) * 2009-07-10 2012-05-30 斯特拉斯克莱德大学 Wound dressing with impedance sensor
CN105615844A (en) * 2016-02-19 2016-06-01 大连理工大学 Device and method of impedance detection and analysis of brachial artery endothelial function

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2033575A (en) * 1978-05-24 1980-05-21 Rolfe P Investigating substances in a patient's bloodstream
CN1596826A (en) * 2004-07-27 2005-03-23 天津大学 Non-invasive detection device of pulse impedance spectrum blood sugar or other biood component and its detection method
CN102481112A (en) * 2009-07-10 2012-05-30 斯特拉斯克莱德大学 Wound dressing with impedance sensor
CN105615844A (en) * 2016-02-19 2016-06-01 大连理工大学 Device and method of impedance detection and analysis of brachial artery endothelial function

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