CN111419519A - System and method for monitoring urine in urinary tract ostomy bag based on pressure sensor - Google Patents
System and method for monitoring urine in urinary tract ostomy bag based on pressure sensor Download PDFInfo
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- CN111419519A CN111419519A CN202010049770.0A CN202010049770A CN111419519A CN 111419519 A CN111419519 A CN 111419519A CN 202010049770 A CN202010049770 A CN 202010049770A CN 111419519 A CN111419519 A CN 111419519A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/44—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices
- A61F5/445—Colostomy, ileostomy or urethrostomy devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
- G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
- G01C21/16—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F22/00—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for
- G01F22/02—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for involving measurement of pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/52—Weighing apparatus combined with other objects, e.g. furniture
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The invention discloses a urine monitoring system and method in a urinary tract ostomy bag based on a pressure sensor, which comprises a shell (1), a pressure sensor I (21), a pressure sensor II (22), a pressure sensor III (23), an MEMS sensor, a microcontroller and a terminal.
Description
Technical Field
The invention relates to a system and a method for monitoring urine in a urinary tract ostomy bag based on a pressure sensor, and belongs to the technical field of medical instruments.
Background
As a certain organ in the urinary tract is diseased, the urinary tract of a patient needs to be opened to the abdominal wall to form a stoma; an ostomy bag is used to contain urine produced by a patient through a stoma. The patient who has performed the stoma operation needs to wear the ostomy bag for life for a whole life, and the patient does not have autonomous perception on the process from the human body to the ostomy bag, and cannot know the urination time and the urine amount stored in the ostomy bag in real time, so that the urine in the ostomy bag overflows, the abdomen or clothes are stained, and troubles are brought to the normal life and work of the patient; or affecting the urine secretion of the urinary system of the human body, and having adverse effect on the health of the human body. This seriously affects the normal work and quality of life of the patient.
Chinese patent 201520272583.3 discloses a sick clothes convenient to patient of making a mouthful specifically discloses be equipped with gravity sensor, singlechip and the alarm that is used for detecting the pocket weight of making in the bottom of pocket, gravity sensor connects the singlechip, the alarm is connected to the singlechip, the singlechip is according to the pocket weight control alarm that makes that gravity sensor detected, sends the weight signal that gravity sensor detected to bluetooth signal receiver through bluetooth signal transmitter, and bluetooth signal receiver gives the treater with the signal transmission who receives, if the weight of making the pocket surpasss predetermined threshold value, the treater then control switch circuit opens to open call switch and call medical personnel in time to change and make the pocket. Because the gravity sensor for detecting the weight of the ostomy bag is only arranged at the bottom of the bag, when a human body lies down, the data detected by the gravity sensor can be seriously deviated (smaller than) the real data, and the practicability is greatly reduced.
Chinese patent 201910155761.7 discloses an ostomy patient management system based on cloud and wearable technology, specifically discloses a Bluetooth ostomy bag monitoring system, a mobile terminal apps and a remote cloud, the Bluetooth ostomy bag monitoring system comprises a protective body, a main control chip module, a battery module, a storage chip, a data output module I, a data input module I and a low-power Bluetooth module I are arranged in the protective body, the Bluetooth ostomy bag monitoring system comprises a monitoring main body, a data input module II, a data output module II and a bending sensor signal processing module which are respectively connected with the main control chip module are arranged in the monitoring main body, the main control chip module is respectively connected with the low-power Bluetooth module II and the bending sensor, the remote cloud comprises a user login module, a data storage and display module and a big data analysis module; the disease management and monitoring capability is improved through a new digital technology, and all-round monitoring and recording of medical personnel and patients on the stoma and the ostomy bag are facilitated. Since the bending sensor is used for measuring the urine volume, the principle is that the resistance of the bending sensor 15 changes along with the bending of the sensor, the bending is too macroscopic, the real-time urine volume cannot be accurately measured, and for a patient, the real-time urine volume can be known, which is very important, so that the patient can drink water according to the urine volume.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides a urine monitoring system and a method in a urinary ostomy bag based on a pressure sensor, the system and the method can quantitatively monitor the urine output (volume or quality) and the urine output time and the urine output times of a patient wearing the urinary ostomy bag in real time, and transmit corresponding data to terminals such as a mobile phone and the like to inform the user, so that the patient wearing the ostomy bag can be conveniently treated in time.
The technical scheme is as follows: in order to achieve the purpose, the invention adopts the technical scheme that:
a urine monitoring system in a urinary tract ostomy bag based on a pressure sensor comprises a shell, a first pressure sensor, a second pressure sensor, a third pressure sensor, a MEMS sensor, a microcontroller and a terminal, wherein:
the shell is used for placing the ostomy bag, the shell comprises a left side face, a lower bottom face, a right side face and an upper top face, and the left side face, the lower bottom face, the right side face and the upper top face are connected with one another to form the shell.
The first pressure sensor is arranged on the inner wall of the left side face, the second pressure sensor is arranged on the inner wall of the lower bottom face, and the third pressure sensor is arranged on the inner wall of the right side face.
The MEMS sensor and the microcontroller are both installed on the shell, and the pressure sensor I, the pressure sensor II, the pressure sensor III, the MEMS sensor and the terminal are all connected with the microcontroller.
The first pressure sensor is used for detecting first pressure information of urine in the ostomy bag to the left side face of the shell and uploading the first pressure information to the microcontroller.
The second pressure sensor is used for detecting second pressure information of urine in the ostomy bag on the lower bottom surface of the shell and uploading the second pressure information to the microcontroller.
The third pressure sensor is used for detecting third pressure information of urine in the ostomy bag to the right side face of the shell and uploading the third pressure information to the microcontroller.
The MEMS sensor is used for detecting the posture of the shell to obtain the current posture information.
And the microcontroller obtains the urine volume in the ostomy bag according to the pressure information I, the pressure information II, the pressure information III and the current posture information. And comparing the obtained urine quantity with a preset urine threshold value, and sending an alarm signal when the obtained urine quantity is higher than the urine threshold value.
And the alarm module of the terminal carries out alarm reminding according to the alarm signal.
Preferably: the pressure sensor comprises a first pressure sensor, a second pressure sensor and a third pressure sensor, and further comprises a signal conditioning circuit, wherein the signal conditioning circuit is used for conditioning pressure signals collected by the first pressure sensor, the second pressure sensor and the third pressure sensor and sending the conditioned pressure signals to the microcontroller.
Preferably: the signal conditioning circuit comprises a first resistor, a first operational amplifier I, a second resistor, a second operational amplifier II, a third resistor and a third operational amplifier, wherein the first pressure sensor I is connected with the first resistor in series and then connected with the signal input end of the first operational amplifier I, and the signal output end of the first operational amplifier I is connected with the microcontroller. And the second pressure sensor is connected with the second resistor in series and then connected with the signal input end of the second first operational amplifier, and the signal output end of the second first operational amplifier is connected with the microcontroller. And the third pressure sensor is connected with the third resistor in series and then connected with the signal input end of the third operational amplifier, and the signal output end of the third operational amplifier is connected with the microcontroller.
Preferably: the signal conditioning circuit comprises a first constant current source, a first second operational amplifier, a second constant current source, a second operational amplifier, a third constant current source and a third second operational amplifier, wherein the first pressure sensor is connected with the first constant current source in series and then connected with the signal input end of the first second operational amplifier, and the signal output end of the first second operational amplifier is connected with the microcontroller. And the second pressure sensor is connected with the second constant current source in series and then connected with the signal input end of the second operational amplifier, and the signal output end of the second operational amplifier is connected with the microcontroller. And the third pressure sensor is connected with the third constant current source in series and then connected with the signal input end of the third second operational amplifier, and the signal output end of the third second operational amplifier is connected with the microcontroller.
Preferably: the terminal is provided with an input module and a drinking water calculation module, the input module is used for inputting drinking water time and drinking water amount, the drinking water calculation module obtains supplementary drinking amount and supplementary drinking water time according to the inputted drinking water time and drinking water amount, the supplementary drinking amount and the supplementary drinking water time are displayed through a display module, and meanwhile the alarm module gives an alarm according to the supplementary drinking water time.
Preferably: the microcontroller uploads the detected urine volume to the terminal in real time, and the terminal displays the urine volume through the display module according to the uploaded urine volume.
Preferably: the intelligent terminal comprises a wireless transceiver, and the microcontroller is in communication connection with the intelligent terminal through the wireless transceiver.
Preferably: the right side face is provided with an ostomy bag chassis connecting through hole, and the first pressure sensor and the third pressure sensor are both positioned below the ostomy bag chassis connecting through hole.
A method of monitoring using a pressure sensor based urine monitoring system in a urostomy bag, comprising the steps of:
And 2, the microcontroller sends starting detection signals to the first pressure sensor, the second pressure sensor, the third pressure sensor and the MEMS sensor at intervals, the first pressure sensor, the second pressure sensor and the third pressure sensor measure pressure information at the moment according to the starting detection signals to respectively obtain first pressure information, second pressure information and third pressure information, and the first pressure information, the second pressure information and the third pressure information are respectively uploaded to the microcontroller. The MEMS sensor detects the current attitude information of the shell at the moment according to the starting detection signal and uploads the obtained current attitude information to the microcontroller.
And 3, matching the corresponding measurement curve and an equivalent data conversion method by the microcontroller according to the pressure information I, the pressure information II, the pressure information III and the current posture information to obtain the urine volume in the stoma bag. And comparing the obtained urine quantity with a preset urine threshold value, and sending an alarm signal when the obtained urine quantity is higher than the urine threshold value.
And 4, the alarm module of the terminal carries out alarm reminding according to the alarm signal.
Preferably: the drinking water time and the drinking water amount are input through the input module, the drinking water calculation module obtains the supplementary drinking amount and the supplementary drinking water time according to the input drinking water time and the drinking water amount, the supplementary drinking amount and the supplementary drinking water time are displayed through the display module, and meanwhile the alarm module gives an alarm according to the supplementary drinking water time.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the pressure information I, the pressure information II and the pressure information III are respectively obtained through the pressure sensor I, the pressure sensor II and the pressure sensor III, and the urine volume in the ostomy bag is obtained through the current posture information obtained through the MEMS sensor according to the pressure information I, the pressure information II, the pressure information III and the current posture information, so that the obtained urine volume is accurate.
2. The invention can monitor the urine quantity in the ostomy bag in real time, can remind a patient to carry out treatment such as discharge in time when the ostomy bag is full, can prevent urine from staining the abdomen or clothes, and can not generate adverse effect on the health due to the full ostomy bag.
3. The invention can record the urination amount, the urination time and the urination times of the patient, thereby carrying out corresponding analysis on the physical state of the patient, such as increasing the water intake and the drinking times.
4. The invention adopts the wireless communication technology, and is beneficial to wearing and battery endurance.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic view of the structure of an ostomy bag, wherein FIG. 2(a) is a front view of the ostomy bag and FIG. 2(b) is a left view of the ostomy bag;
FIG. 3 is a schematic representation of the use of the present invention;
FIG. 4 is a schematic diagram of resistor voltage division;
FIG. 5 is a schematic diagram of a constant current source circuit;
FIG. 6 is a schematic structural view of the present invention;
FIG. 7 is a graph showing the pressure and urine volume in different postures.
Detailed Description
The present invention is further illustrated by the following description in conjunction with the accompanying drawings and the specific embodiments, it is to be understood that these examples are given solely for the purpose of illustration and are not intended as a definition of the limits of the invention, since various equivalent modifications will occur to those skilled in the art upon reading the present invention and fall within the limits of the appended claims.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
A urine monitoring system in a urinary ostomy bag based on a pressure sensor is shown in figure 1 and comprises a shell 1, a first pressure sensor 21, a second pressure sensor 22, a third pressure sensor 23, a MEMS sensor, a microcontroller and a terminal, wherein:
as shown in fig. 2, the ostomy bag 3 is provided with an ostomy bag chassis 4 in which urine 5 is stored when in use, as shown in fig. 6, the housing 1 is used for placing the ostomy bag 3, the housing can be made of hard materials or flexible materials, and the capacitive sensor can be attached to the ostomy bag as much as possible, the housing 1 comprises a left side surface 11, a lower bottom surface 12, a right side surface 13 and an upper top surface 14, and the left side surface 11, the lower bottom surface 12, the right side surface 13 and the upper top surface 14 are connected with each other to form the housing 1.
The first pressure sensor 21 is arranged on the inner wall of the left side surface 11, the second pressure sensor 22 is arranged on the inner wall of the lower bottom surface 12, and the third pressure sensor 23 is arranged on the inner wall of the right side surface 13. The first pressure sensor 21, the second pressure sensor 22 and the third pressure sensor 23 are all pressure film sensors, the ostomy bag 3 is placed in the pressure film sensors through the shell 1, and the pressure film sensors are respectively placed on the lower side, the left side and the right side of the ostomy bag 3 shown in the figure. When the person stands or sits, the second pressure sensor 22 on the lower side can detect the pressure of urine between the shells; when the person lies down, the pressure sensors one 21 and three 23 on the right side or the left side can detect the pressure between the urine in the ostomy bag and the shell.
The right side surface 13 is provided with an ostomy bag chassis connection through hole 131, and the first pressure sensor 21 and the third pressure sensor 23 are positioned below the ostomy bag chassis connection through hole 131.
The electrode plane of the pressure film sensor can be arranged at one side close to the abdomen of the human body or at one side far away from the abdomen; the measuring electrode is attached to the surface of the ostomy bag. The system is installed without having to destroy or modify the existing structure of the ostomy bag.
The MEMS sensor and the microcontroller are both installed on the shell 1, and the first pressure sensor 21, the second pressure sensor 22, the third pressure sensor 23, the MEMS sensor and the terminal are all connected with the microcontroller.
The first pressure sensor 21 is used for detecting first pressure information of urine in the ostomy bag on the left side surface 11 of the shell 1 and uploading the first pressure information to the microcontroller.
The second pressure sensor 22 is used for detecting second pressure information of urine in the ostomy bag on the lower bottom surface 12 of the shell 1 and uploading the second pressure information to the microcontroller.
The third pressure sensor 23 is used for detecting third pressure information of urine in the ostomy bag on the right side surface 13 of the shell 1 and uploading the third pressure information to the microcontroller.
The MEMS sensor is used for detecting the posture of the shell 1 to obtain the current posture information. The principle is that an accelerometer and a gyroscope of a Micro Electro Mechanical System (MEMS) are used for detecting the postures of a human body and an ostomy bag, and the specific posture calculation is that the conventional angular acceleration is integrated into angular velocity and further integrated into angular displacement, and then the current posture is calculated according to the initial position.
And the microcontroller obtains the urine volume in the ostomy bag according to the pressure information I, the pressure information II, the pressure information III and the current posture information. And comparing the obtained urine quantity with a preset urine threshold value, and sending an alarm signal when the obtained urine quantity is higher than the urine threshold value.
The alarm module of the terminal carries out alarm reminding according to the alarm signal; the terminal of the invention is a broad concept and comprises a prompt component on the shell, such as a vibration component and a light-emitting device, so that a patient can be reminded without an intelligent terminal such as a mobile phone.
The overall mounting is shown in figure 3, where the ostomy bag together with the monitoring system is mounted on the abdomen of the person.
The resistance value of the pressure film sensor changes after stress, and accordingly, a corresponding signal conditioning circuit can be designed; the signal conditioning circuit is used for conditioning pressure signals collected by the first pressure sensor 21, the second pressure sensor 22 and the third pressure sensor 23 and sending the conditioned pressure signals to the microcontroller.
The voltage can be correspondingly processed by using an operational amplifier in the form of resistance voltage division, and the voltage output by the operational amplifier is related to the pressure and has good linearity in a certain interval, as shown in fig. 4: the signal conditioning circuit comprises a first resistor, a first operational amplifier I, a second resistor, a second operational amplifier II, a third resistor and a third operational amplifier, wherein the first pressure sensor 21 is connected with the first resistor in series and then connected with the signal input end of the first operational amplifier I, and the signal output end of the first operational amplifier is connected with the microcontroller. The second pressure sensor 22 is connected with the second resistor in series and then connected with the signal input end of the second first operational amplifier, and the signal output end of the second first operational amplifier is connected with the microcontroller. And the third pressure sensor 23 is connected with the third resistor in series and then connected with the signal input end of the third operational amplifier, and the signal output end of the third operational amplifier is connected with the microcontroller.
A constant current source circuit can be used, and the voltage across the pressure sensor can be measured to obtain the corresponding pressure value, as shown in fig. 5: the signal conditioning circuit comprises a first constant current source, a first second operational amplifier, a second constant current source, a second operational amplifier, a third constant current source and a third second operational amplifier, wherein the first pressure sensor 21 is connected with the first constant current source in series and then is connected with the signal input end of the first second operational amplifier, and the signal output end of the first second operational amplifier is connected with the microcontroller. The second pressure sensor 22 is connected with the second constant current source in series and then connected with a signal input end of a second operational amplifier, and a signal output end of the second operational amplifier is connected with the microcontroller. And the third pressure sensor 23 is connected with the third constant current source in series and then is connected with the signal input end of the third second operational amplifier, and the signal output end of the third second operational amplifier is connected with the microcontroller.
The terminal is provided with an input module and a drinking water calculation module, the input module is used for inputting drinking water time and drinking water amount, the drinking water calculation module obtains supplementary drinking amount and supplementary drinking water time according to the inputted drinking water time and drinking water amount, the supplementary drinking amount and the supplementary drinking water time are displayed through a display module, and meanwhile the alarm module gives an alarm according to the supplementary drinking water time.
The microcontroller uploads the detected urine volume to the terminal in real time, and the terminal displays the urine volume through the display module according to the uploaded urine volume.
The intelligent terminal is characterized by further comprising a wireless transceiver, and the microcontroller is in communication connection with the intelligent terminal through the wireless transceiver. The wireless transceiver of the invention communicates with terminals such as mobile phones by using Bluetooth and low-power Bluetooth technologies, and transmits information such as urine volume to intelligent terminals such as mobile phones. The App or WeChat applet of the terminal such as the mobile phone can count, display and store the urination time, the urination amount per time, the urination times and the total urination amount per day of the patient. When a certain threshold value is reached (the threshold value can be set according to the situation), the App or the WeChat applet of the terminal such as the mobile phone can remind the patient to process urine in time. The terminal App or the WeChat applet such as the mobile phone has the function of manually recording drinking time and drinking water amount. And according to historical data analysis, a function of reminding the patient of supplementing drinking amount and drinking time by using a terminal App (application program) such as a mobile phone or a WeChat applet.
A method of monitoring using a pressure sensor based urine monitoring system in a urostomy bag, comprising the steps of:
Step 2, the microcontroller sends a starting detection signal to the first pressure sensor 21, the second pressure sensor 22, the third pressure sensor 23 and the MEMS sensor at intervals, so that the first pressure sensor 21, the second pressure sensor 22, the third pressure sensor 23 and the MEMS sensor can detect relevant information in real time by setting monitoring time, real-time monitoring is further achieved, the first pressure sensor 21, the second pressure sensor 22 and the third pressure sensor 23 measure pressure information at the moment according to the starting detection signal, pressure information I, pressure information II and pressure information III are respectively obtained, and the first pressure information, the second pressure information and the third pressure information are respectively uploaded to the microcontroller. The MEMS sensor detects the current attitude information of the shell 1 at the moment according to the starting detection signal and uploads the obtained current attitude information to the microcontroller.
And 3, matching the corresponding measurement curve and an equivalent data conversion method by the microcontroller according to the pressure information I, the pressure information II, the pressure information III and the current posture information to obtain the urine volume in the stoma bag. And comparing the obtained urine quantity with a preset urine threshold value, and sending an alarm signal when the obtained urine quantity is higher than the urine threshold value.
As shown in fig. 7, first, fitting curves of the pressure and the urine volume in various postures are established, a second pressure information of the second pressure sensor 22 is selected and measured in a state where the casing (ostomy bag) is vertical, different urine volumes of the ostomy bag and corresponding second pressure information are measured, and the fitting curves of the pressure and the urine volume in the vertical state are obtained. When the shell (ostomy bag) is in a flat state, the pressure information I of the pressure sensor I21 or the pressure information III of the pressure sensor III 23 is selected for measurement, different urine amounts of the ostomy bag and the corresponding pressure information I or pressure information III are measured, and a fitting curve of the pressure and the urine amount in the flat state is obtained. Different inclination angles are taken from the vertical state to the flat state, as shown in figure 6, the inclination angle is deviated to the right as a positive direction, the inclination angle is deviated to the left as a negative direction, under various inclination angle states in the negative direction, selecting a pressure information I of a pressure sensor I21 for measurement, measuring different urine volumes of the ostomy bag and corresponding pressure information I to obtain a fitting curve of the pressure and the urine volume under different inclination angle states in the negative direction, under various inclination angle states in the positive direction, selecting a third pressure information of the third pressure sensor 23 for measurement, measuring different urine amounts of the ostomy bag and a third pressure information corresponding to the urine amounts, obtaining fitting curves of the pressure and the urine amounts under different inclination angle states in the positive direction, wherein, the inclination angle is 90 degrees in the vertical state, 0 degree in the horizontal state and 0-90 degrees in other states.
Simply, when the current posture information detected by the MEMS sensor is in a vertical state, namely when the inclination angle is 90 degrees, the patient is considered to be in a vertical posture of the ostomy bag such as standing, sitting and standing, the pressure information II of the pressure sensor II 22 is selected, and the urine volume is calculated according to a fitting curve of the pressure and the urine volume in the vertical state; when the current posture information detected by the MEMS sensor is in a flat state, namely when the inclination angle is 0 degree, the posture of the patient lying on the ostomy bag such as lying on the back is detected, the pressure information I of the corresponding pressure sensor I21 or the pressure information III of the corresponding pressure sensor III 23 is selected, and the urine volume is calculated according to a fitting curve of the pressure and the urine volume in the flat state.
Further, a plurality of states: when the current posture information detected by the MEMS sensor is in other states, namely the inclination angle direction is in a positive direction or a negative direction, and the inclination angle is between 0 and 90 degrees, if the inclination angle direction is in the positive direction, selecting pressure information three of a pressure sensor three 23, and if the inclination angle direction is in the negative direction, selecting pressure information one of a pressure sensor one 21, and then selecting a corresponding fitting curve of pressure and urine volume according to the inclination angle to calculate the urine volume.
In addition, in order to improve the precision, in the case of a plurality of states, namely when the inclination angle is not 0 or 90 degrees, the pressure information II of the pressure sensor II 22 is selected, and the urine volume I is calculated according to a fitting curve of the pressure and the urine volume in the vertical state; selecting the pressure information I of the pressure sensor I21, and calculating the urine volume II according to fitting curves of the pressure and the urine volume under different inclination angles in the negative direction; selecting pressure information III of a pressure sensor III 23, and calculating urine volume III according to fitting curves of pressure and urine volume in different inclination angles of the positive direction; the true value of the urine volume is estimated from the first, second and third urine volumes, and the estimation method may be an arithmetic average value or a weighted average value (the weight may be converted from posture information) of the true value, thereby improving the estimation accuracy of the urine volume.
And 4, the alarm module of the terminal carries out alarm reminding according to the alarm signal.
The drinking water time and the drinking water amount are input through the input module, the drinking water calculation module obtains the supplementary drinking amount and the supplementary drinking water time according to the input drinking water time and the drinking water amount, the supplementary drinking amount and the supplementary drinking water time are displayed through the display module, and meanwhile the alarm module gives an alarm according to the supplementary drinking water time. Firstly, modeling is carried out according to the urine discharge, the motion amount, the season and the climate factor to obtain the standard water intake, then the consumed water amount is obtained according to the detected urine discharge and the MEMS detected motion amount and by combining the corresponding season and climate information, and if the consumed water amount is obviously too much or too little than the standard water intake, corresponding prompt can be carried out.
In addition, the invention can detect the urine volume in the ostomy bag in real time and remind the user to timely treat or discharge the urine in the ostomy bag when the urine is full. The patient's urination data (urination time, amount and number of urination per time, and total daily urination) are recorded for the patient and the doctor to make corresponding analysis and diagnosis. The invention can monitor the urine amount in the ostomy bag in real time, can remind a patient to carry out treatment such as discharge in time when the ostomy bag is full, can prevent urine from staining the abdomen or clothes, and can not generate adverse effect on the body health due to the full ostomy bag. The urination amount, the urination time and the urination times of the patient can also be recorded, so that the physical state of the patient can be analyzed correspondingly, such as the increase of drinking water amount and drinking times. Therefore, the invention can monitor the urine volume in the ostomy bag, the urination time of the patient, the urination amount and the urination frequency of the patient and warn under certain conditions, and can monitor the urination behavior of the patient in the urostomy operation and the urine volume in the ostomy bag in real time and inform the user.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (10)
1. A urine monitoring system in a urinary ostomy bag based on a pressure sensor is characterized in that; including shell (1), pressure sensor (21), pressure sensor two (22), pressure sensor three (23), MEMS sensor, microcontroller, terminal, wherein:
the shell (1) is used for placing an ostomy bag, the shell (1) comprises a left side surface (11), a lower bottom surface (12), a right side surface (13) and an upper top surface (14), and the left side surface (11), the lower bottom surface (12), the right side surface (13) and the upper top surface (14) are connected with each other to form the shell (1);
the first pressure sensor (21) is arranged on the inner wall of the left side surface (11), the second pressure sensor (22) is arranged on the inner wall of the lower bottom surface (12), and the third pressure sensor (23) is arranged on the inner wall of the right side surface (13);
the MEMS sensor and the microcontroller are both arranged on the shell (1), and the pressure sensor I (21), the pressure sensor II (22), the pressure sensor III (23), the MEMS sensor and the terminal are all connected with the microcontroller;
the first pressure sensor (21) is used for detecting first pressure information of urine in the ostomy bag to the left side face (11) of the shell (1) and uploading the first pressure information to the microcontroller;
the second pressure sensor (22) is used for detecting second pressure information of urine in the ostomy bag on the lower bottom surface (12) of the shell (1) and uploading the second pressure information to the microcontroller;
the third pressure sensor (23) is used for detecting third pressure information of urine in the ostomy bag to the right side surface (13) of the shell (1) and uploading the third pressure information to the microcontroller;
the MEMS sensor is used for detecting the posture of the shell (1) to obtain current posture information;
the microcontroller obtains the urine volume in the ostomy bag according to the pressure information I, the pressure information II, the pressure information III and the current posture information; comparing the obtained urine quantity with a preset urine threshold value, and sending an alarm signal when the obtained urine quantity is higher than the urine threshold value;
and the alarm module of the terminal carries out alarm reminding according to the alarm signal.
2. The pressure sensor-based urostomy monitoring system of claim 1 wherein: the pressure sensor is characterized by further comprising a signal conditioning circuit, wherein the signal conditioning circuit is used for conditioning pressure signals collected by the first pressure sensor (21), the second pressure sensor (22) and the third pressure sensor (23) and sending the conditioned pressure signals to the microcontroller.
3. The pressure sensor-based urostomy monitoring system of claim 2 wherein: the signal conditioning circuit comprises a first resistor, a first operational amplifier I, a second resistor, a second operational amplifier II, a third resistor and a third operational amplifier, wherein a first pressure sensor (21) is connected with the first resistor in series and then connected with a signal input end of the first operational amplifier I, and a signal output end of the first operational amplifier I is connected with the microcontroller; the second pressure sensor (22) is connected with a second resistor in series and then connected with a signal input end of a second first operational amplifier, and a signal output end of the second first operational amplifier is connected with the microcontroller; and the third pressure sensor (23) is connected with the third resistor in series and then is connected with the signal input end of the third operational amplifier, and the signal output end of the third operational amplifier is connected with the microcontroller.
4. The pressure sensor-based urostomy monitoring system of claim 3 wherein: the signal conditioning circuit comprises a first constant current source, a first second operational amplifier, a second constant current source, a second operational amplifier, a third constant current source and a third second operational amplifier, wherein a first pressure sensor (21) is connected with the first constant current source in series and then is connected with a signal input end of the first second operational amplifier, and a signal output end of the first second operational amplifier is connected with the microcontroller; the second pressure sensor (22) is connected with the second constant current source in series and then connected with the signal input end of the second operational amplifier, and the signal output end of the second operational amplifier is connected with the microcontroller; and the third pressure sensor (23) is connected with the third constant current source in series and then is connected with the signal input end of the third second operational amplifier, and the signal output end of the third second operational amplifier is connected with the microcontroller.
5. The pressure sensor-based urostomy monitoring system of claim 1 wherein: the terminal is provided with an input module and a drinking water calculation module, the input module is used for inputting drinking water time and drinking water amount, the drinking water calculation module obtains supplementary drinking amount and supplementary drinking water time according to the inputted drinking water time and drinking water amount, the supplementary drinking amount and the supplementary drinking water time are displayed through a display module, and meanwhile the alarm module gives an alarm according to the supplementary drinking water time.
6. The pressure sensor-based urostomy monitoring system of claim 1 wherein: the microcontroller uploads the detected urine volume to the terminal in real time, and the terminal displays the urine volume through the display module according to the uploaded urine volume.
7. The pressure sensor-based urostomy monitoring system of claim 1 wherein: the intelligent terminal comprises a wireless transceiver, and the microcontroller is in communication connection with the intelligent terminal through the wireless transceiver.
8. The pressure sensor-based urostomy monitoring system of claim 1 wherein: the right side surface (13) is provided with an ostomy bag chassis connecting through hole (131), and the first pressure sensor (21) and the third pressure sensor (23) are both positioned below the ostomy bag chassis connecting through hole (131).
9. A method of monitoring using the pressure sensor based urostomy monitoring system of any one of claims 1 to 8, comprising the steps of:
step 1, placing an ostomy bag in a shell (1), communicating an ostomy chassis, and then fixing the shell (1) on a patient;
step 2, the microcontroller sends a starting detection signal to the first pressure sensor (21), the second pressure sensor (22), the third pressure sensor (23) and the MEMS sensor at intervals, the first pressure sensor (21), the second pressure sensor (22) and the third pressure sensor (23) measure pressure information at the moment according to the starting detection signal, respectively obtain first pressure information, second pressure information and third pressure information, and respectively upload the first pressure information, the second pressure information and the third pressure information to the microcontroller; the MEMS sensor detects the current attitude information of the shell (1) at the moment according to the starting detection signal and uploads the obtained current attitude information to the microcontroller;
step 3, the microcontroller matches corresponding measurement curves and an equivalent data conversion method according to the pressure information I, the pressure information II, the pressure information III and the current posture information to obtain the urine volume in the stoma bag; comparing the obtained urine quantity with a preset urine threshold value, and sending an alarm signal when the obtained urine quantity is higher than the urine threshold value;
and 4, the alarm module of the terminal carries out alarm reminding according to the alarm signal.
10. The monitoring method of claim 9, wherein: the drinking water time and the drinking water amount are input through the input module, the drinking water calculation module obtains the supplementary drinking amount and the supplementary drinking water time according to the input drinking water time and the drinking water amount, the supplementary drinking amount and the supplementary drinking water time are displayed through the display module, and meanwhile the alarm module gives an alarm according to the supplementary drinking water time.
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| WO2023095173A1 (en) * | 2021-11-27 | 2023-06-01 | Sunil Kumar Singh | An urostomy bag with a sensor to determine and communicate a urine level to user |
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