CN110652289A - Detection device and method for conveniently measuring postpartum hemorrhage amount - Google Patents

FIG. 6 is a graph showing the relationship between bleeding volume and capacitance as a function of

30 ℃ according to an embodiment of the present invention.

Fig. 1 is a schematic structural diagram of a detection device for conveniently measuring postpartum hemorrhage according to an embodiment of the present invention. As shown in fig. 1, the detecting device for conveniently measuring the amount of postpartum hemorrhage of the embodiment comprises: a

11 and a bleeding

12.

The

11 comprises a

111 and a first

112; the

112 is in contact with the

111, the

112 is used for absorbing blood, and the

111 is used for preventing the blood from permeating to other places such as a bed or clothes; the

12 comprises a detecting

121 and a

122; the detecting

121 is disposed on the

111, and is configured to send a blood volume signal to the

122 according to a blood volume of the blood absorbed by the

112, so that the

122 processes the blood volume signal and sends the processed blood volume signal to a preset terminal.

Specifically, the

111 is made of a waterproof material, such as polyethylene. The first

112 is identical in composition and structure to a puerperal special pad towel. The detection device for conveniently measuring postpartum hemorrhage volume of this embodiment can be applicable to the lying-in woman that finishes of production, and the appearance of

11 can be different according to the application scene of difference, for example

11 can make the form appearance that tiles to be fit for lying-in woman in bed, and

11 can also be made wearable appearance structure on one's body, in order to be fit for lying-in woman that can walk etc.. The detecting

121 may send a blood volume signal to the

122 according to the blood volume of the blood absorbed by the

112, and the

122 may calculate specific bleeding volume data according to the blood volume signal and send blood volume information including the specific bleeding volume data to the preset terminal; the

122 may further send the blood volume information to the preset terminal, and the preset terminal calculates specific bleeding volume data according to the blood volume information.

In view of the lying-in woman can discharge the amniotic fluid earlier when putting into production, discharges blood again, in order to avoid the influence of amniotic fluid to the amount of bleeding detects,

11 still is provided with the second absorbed layer, the second absorbed layer is used for absorbing the amniotic fluid. The second absorption layer is arranged on the surface of the

112, which is not in contact with the

111, and the second absorption layer is detachably attached to the

112, so that after the second absorption layer absorbs the amniotic fluid and is detached, the

112 directly contacts with a bleeding position to absorb blood.

The second absorbent layer has the same composition and structure as the first

112, but the first

112 and the second absorbent layer can be arbitrarily sized according to actual use, for example, the first

112 is sized to conform to the size of the pad towel for puerpera of XL, and the second absorbent layer is sized to conform to the size of the pad towel for puerpera of L. The

112 can be connected to the second absorption layer through a connection belt, specifically, four corners of the

112 can be connected to the second absorption layer through the connection belt, and the connection belt is made of a material or a structure which is easy to tear; the first

112 may also be joined to the second absorbent layer by an adhesive strip, the number of which is at least one. The detection device for conveniently measuring postpartum hemorrhage volume of this embodiment can be applicable to the lying-in woman in the production, through the amniotic fluid is absorbed to the second absorbed layer, has avoided amniotic fluid and blood to be absorbed simultaneously, and makes the amniotic fluid influence the condition that the hemorrhage volume detected and take place, has improved the degree of accuracy of hemorrhage volume testing result.

Fig. 2 is a schematic structural diagram of a detection unit according to an embodiment of the present invention. Referring to fig. 2, the

121 includes at least two electrodes 2111 spaced apart and insulated from each other; the electrodes 2111 are all arranged on the side of the

111 not in contact with the

112; the

111 isolates the electrode 2111 from blood in the

112, so that the blood, the

111, and the electrode 2111 constitute a variable electrolytic capacitor; the capacitance value of the variable electrolytic capacitor is related to the blood volume; the capacitance value is the blood volume signal; the

122 is connected to the electrodes 2111, so that the

122 obtains blood volume information according to the capacitance value and sends the blood volume information to the preset terminal.

In detail, the electrode 2111 may be a conductive ink line printed on the

111 or a metal strip adhered on the

111, so that the electrode 2111 may deform arbitrarily, so that the detection device for conveniently measuring the postpartum hemorrhage amount of the present application may be applied to any scene, for example, a wearable model may be made to be applied to a scene of daily walking activities of a parturient, a model laid on a bed may be made to be applied to a scene of parturient childbirth, and the like. In the variable electrolytic capacitor, the electrode 2111 is an electrode of the variable electrolytic capacitor, the

111 is a dielectric of the variable electrolytic capacitor, and the blood in the

112 is an electrolyte of the electrolytic capacitor. In a constant temperature environment, the capacitance of the variable electrolytic capacitor is related to the amount of blood in the

112, and at a certain temperature, a preset proportional coefficient between the capacitance and the amount of bleeding can be determined through experiments, so that the

122 can calculate the amount of bleeding of the parturient according to the capacitance and the preset proportional coefficient.

Fig. 3 is a schematic structural diagram of a processing unit according to an embodiment of the present invention. As shown in fig. 3, the

122 includes a charge and

3111, a

3112, a

3113, a

3114, and an

3115; the charge/

3111, the

3113, the

3114, and the

3115 are connected to the

3112, respectively; the

3112 sends the blood volume information to the preset terminal through the

3113; a charge/discharge

3111 connected to the electrode 2111 and configured to manage charge and discharge of the variable electrolytic capacitor; the

3112 is configured to control a working state of the charge/

3111, acquire voltage information of the electrode 2111, calculate the capacitance value according to the voltage information, and control the alarm subunit to

3115 according to the blood volume information, and the

3114 is configured to display the blood volume information sent by the

3112.

In detail, the

3112 may be a control chip of the related art; the charge and discharge

3111 may be a power supply device of the related art; the

3114 is a display screen in the prior art, such as a Light Emitting Diode (LED) display screen;

3115 is a prior art alarm device, such as a prior art buzzer. The

3112 controls the charge and discharge

3111 to charge or discharge the variable electrolytic capacitor to obtain a real-time capacitance value of the variable electrolytic capacitor. The charge/

3111 may supply power to the

3113 directly or may supply power to the

3113 through the

3112. The

3112 has an analyzing and calculating function, and can calculate the capacitance value according to the voltage information and calculate the bleeding volume of the parturient according to the capacitance value; the

3112 may further control the

3115 to

3115 according to a predefined bleeding amount threshold, specifically, control the

3115 to alarm when the

3112 detects that the bleeding amount information is greater than the bleeding amount threshold. The

3114 is configured to display the blood volume information sent by the

3112. The

122 has a simple structure and complete functions, so that the detection device for conveniently measuring the postpartum hemorrhage amount has a simple structure, and is easy to carry about by a puerpera.

Further, the charge/discharge

3111 is detachably connected to the electrode 2111. Specifically, the connection head of the charge/discharge

3111 may be connected to the electrode 2111 through a movable connection device. Fig. 4 is a schematic structural diagram of an articulated apparatus according to an embodiment of the present invention. Referring to fig. 4, the movable connection device comprises a

41 and a

42, a

411 is arranged on the

41, one edge of the

42 is connected to one side of the

411, and the top cover can rotate around the connection part with the

411; the other side of

411 sets up a

412, set up one on the

42 with

413 that

412 corresponds to make

42 pass through

412 with

413 is fixed to be covered on

41,

42 with the recess bottom is closely laminated, when making the connector is in with electrode 2111 when connecting in the recess,

42 with the closely laminated relation that the recess bottom formed can make connector and electrode 2111 relation of being connected keep constantly, makes and fills

3111 and electrode 2111 and continuously connects, and when

42 was opened, it no longer was connected to fill

3111 and electrode 2111. The purpose of detachably connecting the charge and discharge

3111 and the electrode 2111 is achieved.

Further, the

3112 includes a control subunit composed of an analog-to-digital conversion subunit and a processor; the two ends of the analog-to-digital conversion subunit are respectively connected with the electrode and the processor and are used for acquiring analog quantity voltage information of the electrode, converting the analog quantity voltage information into digital quantity voltage information and then sending the digital quantity voltage information to the processor; the analog-to-digital conversion subunit is any analog-to-digital converter in the prior art capable of realizing the present application. The processor is used for controlling the working state of the charge and discharge electronic unit, acquiring the voltage information of the electrode and calculating the capacitance value according to the voltage information.

Further, the

3113 is a bluetooth sub-unit or a General Packet Radio Service (GPRS) sub-unit.

In detail, the bluetooth subunit may be a bluetooth module of the prior art, for example, a bluetooth module of the prior art, model number nRF 52840. The GPRS subunit is composed of a Subscriber Identity Module (SIM) card interface, a SIM card interface, and a SIM card, where the SIM card interface is disposed on a housing including the

122, the SIM card interface is disposed corresponding to the SIM card interface, the SIM card interface is connected to the

3112, and the SIM card is inserted into the SIM card interface through the SIM card interface and communicates with the

3112, so that the

3112 can send data to the preset terminal through the GPRS subunit. The Bluetooth subunit is suitable for short-distance communication, and the GPRS subunit can realize long-distance communication, so that a user can select a suitable wireless subunit according to the needs of the user, and various requirements of the user are met.

Further, the bleeding

12 further includes a storage unit connected to the

122; the storage unit is used for storing the blood volume data sent by the

122 when the

122 is not connected with the preset terminal. The storage unit may be a memory in the prior art, when the

122 is not connected to the preset terminal, the

122 stores data to be sent to the preset terminal in the storage unit, and when the

122 is connected to the preset terminal again, the

122 obtains the data stored in the storage unit and sends the data to the preset terminal, so that the situation that when the

122 is not connected to the preset terminal, the detected blood volume data is lost, the user cannot know the bleeding condition of the puerpera in the period of time, the recovery treatment of the puerpera is delayed, and the like is avoided, and the usability of the detection device for conveniently measuring the postpartum hemorrhage is improved.

In detail, when the preset terminal is an external intelligent device, the

122 generates the calculated blood volume information to the external intelligent device, so that the external intelligent device displays the blood volume information, and a user can know a specific bleeding volume; the blood volume information is the specific bleeding volume data. Will through depending on outside intelligent terminal blood volume information display for the detection device for conveniently measuring postpartum hemorrhage volume of this application simple structure, convenient to carry.

When the preset terminal is the dedicated intelligent terminal, a program for calculating the blood volume according to a capacitance value may be set in the control device of the dedicated intelligent terminal, so that the control device may calculate the bleeding volume according to the capacitance value, and therefore, the

122 may send the blood volume information to the dedicated intelligent terminal, so that the dedicated intelligent terminal displays the blood volume information through the display device, and a user knows a specific bleeding volume; the

122 may further send a capacitance value to the dedicated intelligent terminal, the control device receives the capacitance value through a wireless device, calculates the bleeding amount according to the capacitance value, sends the bleeding amount information to the display device, and displays the bleeding amount information after the display device receives the bleeding amount information, so that a user can know the specific bleeding amount. Set up special intelligent terminal, also can show when not having external smart machine blood volume information for the detection device who is used for conveniently measuring postpartum hemorrhage volume of this application can be applicable to the blood volume under any circumstance and detect.

For example, in the first experiment, at the ambient temperature of 25 ℃, different amounts of blood are absorbed by the

112, and then the capacitance values corresponding to the different amounts of blood are measured, and the specific values are as follows:

In experiment two, at the ambient temperature of 30 ℃, different amounts of blood are absorbed by the

112, and then the capacitance values corresponding to the different amounts of blood are measured, and the specific values are as follows:

and finally, calculating the preset proportionality coefficient at the ambient temperature of 30 ℃ according to the data. FIG. 6 is a graph showing the relationship between bleeding volume and capacitance as a function of

30 ℃ according to an embodiment of the present invention. As shown in fig. 6, when the ambient temperature is 30 ℃, the data of the blood volume and the capacitance value form a second linear function, so that a second slope value in the second linear function is determined, wherein the second slope value is a second preset proportionality coefficient, and the corresponding blood volume value can be calculated according to the second preset proportionality coefficient and the capacitance value.

In experiment three, at the ambient temperature of 35 ℃, different amounts of blood are absorbed by the

112, and then the capacitance values corresponding to the different amounts of blood are measured, and the specific values are as follows:

In the actual blood volume detection process, after the detection device for conveniently measuring the postpartum hemorrhage volume is connected and in place, the capacitance value is firstly obtained, and specifically, the

122 calculates the capacitance value of the variable electrolytic capacitor according to the obtained voltage value of the variable electrolytic capacitor. The

122 then calculates the blood volume data according to the capacitance value and the preset scaling factor. Finally, the

122 sends the blood volume data to the preset terminal.

1. A detection device for conveniently measuring postpartum hemorrhage volume, comprising: a blood collection pad and a bleeding amount detection device;

the blood collection pad comprises a barrier layer and a first absorbent layer; the first absorbent layer is in contact with the barrier layer; the first absorption layer is used for absorbing blood; the isolation layer is used for isolating the blood;

the bleeding detection device comprises a detection unit and a processing unit; the detection unit is arranged on the isolation layer and used for sending a blood volume signal to the processing unit according to the blood volume of the blood absorbed by the first absorption layer, so that the processing unit processes the blood volume signal and sends the processed blood volume signal to a preset terminal.

2. The test device of claim 1, wherein the blood collection pad further comprises a second absorbent layer; the second absorption layer is used for absorbing amniotic fluid;

the second absorption layer is arranged on the surface, which is not in contact with the isolation layer, of the first absorption layer, and the second absorption layer is detachably attached to the first absorption layer, so that after the second absorption layer absorbs the amniotic fluid and is detached, the first absorption layer directly contacts with a bleeding position to absorb blood.

3. The device of claim 1 or 2, wherein the detection unit comprises at least two electrodes separated and insulated from each other; the electrodes are arranged on one side, which is not contacted with the first absorption layer, of the isolation layer;

the separator separates the electrode from blood in the first absorption layer so that the blood, the separator and the electrode constitute a variable electrolytic capacitor; the capacitance value of the variable electrolytic capacitor is related to the blood volume; the capacitance value is the blood volume signal;

the processing unit is respectively connected with the electrodes, so that the processing unit obtains blood volume information according to the capacitance value and sends the blood volume information to the preset terminal.

4. The detection device for conveniently measuring postpartum hemorrhage amount according to claim 3, wherein the processing unit comprises a charging and discharging electronic unit, a control subunit, a wireless subunit, a display subunit and an alarm subunit;

the charging and discharging electronic unit, the wireless subunit, the display subunit and the alarm subunit are respectively connected with the control subunit; the control subunit sends the blood volume information to the preset terminal through the wireless subunit;

the charge and discharge electronic unit is detachably connected with the electrode and is used for carrying out charge and discharge management on the variable electrolytic capacitor; the control subunit is used for controlling the working state of the charge-discharge subunit, acquiring voltage information of the electrode, calculating the capacitance value according to the voltage information, and controlling the alarm subunit to alarm according to the blood volume information; the display subunit is used for displaying the blood volume information sent by the control subunit.

5. The device of claim 4, wherein the control subunit comprises a control subunit consisting of an analog-to-digital conversion subunit and a processor;

the two ends of the analog-to-digital conversion subunit are respectively connected with the electrode and the processor and are used for acquiring analog quantity voltage information of the electrode, converting the analog quantity voltage information into digital quantity voltage information and then sending the digital quantity voltage information to the processor; the processor is used for controlling the working state of the charge and discharge electronic unit, acquiring the voltage information of the electrode and calculating the capacitance value according to the voltage information.

6. The device of claim 4, wherein the wireless subunit is a Bluetooth subunit or a GPRS subunit.

7. The test device for facilitating the measurement of postpartum hemorrhage according to claim 3, further comprising a protective pad;

the protection pad is positioned on one side of the isolation layer, where the electrode is arranged, the area of the protection pad is larger than that of the blood collection pad, and the protection pad is used for preventing the blood from leaking to a place contacting with the protection pad when the blood collection pad generates side leakage; the protection pad can also be used for preventing the electrode from being interfered by external environment to generate capacitance value change.

8. The device for facilitating the measurement of postpartum hemorrhage according to claim 1 or 2, wherein the device for detecting the amount of the hemorrhage further comprises a storage unit connected with the processing unit;

the storage unit is used for storing the blood volume data sent by the processing unit when the processing unit is not connected with the preset terminal.

9. The detection device for conveniently measuring the postpartum hemorrhage amount according to claim 1 or 2, wherein the preset terminal is an external intelligent device or a special intelligent terminal;

the external intelligent equipment comprises an external computer and an intelligent mobile phone;

the special intelligent terminal at least comprises a display device, a control device connected with the display device and a wireless device connected with the control device;

the display device is used for displaying the blood volume data sent by the processing unit; the control device is used for analyzing the blood volume data; the dedicated intelligent terminal receives the blood volume data through the wireless device.

10. A detection method for facilitating measurement of postpartum hemorrhage, which is realized by the detection device for facilitating measurement of postpartum hemorrhage according to claim 3, comprising:

acquiring a blood volume signal sent by a detection unit;

obtaining blood volume data according to the blood volume signal;

and sending the blood volume data to a preset terminal.