An intra-abdominal pressure detection device and detection method

Abstract

This invention discloses an intra-abdominal pressure detection device and method, belonging to the field of medical devices. The intra-abdominal pressure detection device of this invention includes a data acquisition device for acquiring the operating status signal of the detection device; and a control device for sending control signals to an execution device based on the status signal sent by the data acquisition device to control the execution device; wherein the data acquisition device includes an image capturing device, and the control device sends control signals to the execution device based on the image signal acquired by the image capturing device to control the execution device. This invention uses the data acquisition device, control device, and execution device in conjunction to automatically measure bladder pressure in the subject, thereby improving the accuracy of the measurement. In the case of periodic and high-frequency monitoring of intra-abdominal pressure, it frees up the hands of medical personnel and improves the efficiency of measurement.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to an intra-abdominal pressure detection device and detection method. Background Technology

[0002] With clinical application and research by numerous domestic clinical experts, intra-abdominal hypertension (IAH) monitoring has broad clinical significance in ICU care. The rate and process of IAH evolving into abdominal compartment syndrome (ACS) vary considerably among different patients. Among them, patients with fulminant pancreatitis develop ACS from IAH the fastest. These patients can progress from the IAH stage to the ACS stage within hours to 48 hours of the onset of SAP. Elevated intra-abdominal pressure (IAH) is closely related to the incidence and mortality of ACS. To minimize the risk of ACS development, it is essential to actively measure intra-abdominal pressure in high-risk patients, monitor the trend of IAH changes, and intervene rapidly before ACS occurs. This can significantly reduce the incidence and mortality of ACS.

[0003] Clinical studies have shown that intravesical pressure measurement is not only non-invasive, but also has a significant linear positive correlation with intra-abdominal pressure. Its high accuracy and good correlation have led to its widespread use in clinical practice, making it the currently recognized "gold standard" for indirect measurement of intra-abdominal pressure (IAP).

[0004] However, in the current technology, the detection of intrabladder pressure often requires manual operation by the operator. For some patients who need to monitor intra-abdominal pressure periodically and frequently over a period of time, especially at night, medical staff need to perform the operation frequently, which is time-consuming, labor-intensive and inefficient. Summary of the Invention

[0005] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0006] Some embodiments of this application propose an intra-abdominal pressure detection device to address the technical problems mentioned in the background section above.

[0007] As a first aspect of this application, some embodiments of this application provide an intra-abdominal pressure detection device, including: an inlet bag for storing physiological saline;

[0008] A syringe is used to provide the power for the flow of saline solution;

[0009] Pressure sensor, used to record pressure values;

[0010] An actuator includes a connecting member, wherein the input bag, syringe, and pressure sensor are respectively connected to the connecting member via pipes. The actuator also includes a first solenoid valve, a second solenoid valve, and a third solenoid valve. The first solenoid valve is provided in the pipe connecting the input bag and the connecting member, the second solenoid valve is provided in the pipe connecting the syringe and the connecting member, and the third solenoid valve is provided in the pipe connecting the pressure sensor and the connecting member. The connecting member also has a first connection port and a second connection port at both ends. The first connection port is connected to a catheter via a pipe, and the second connection port is connected to a reservoir via a pipe.

[0011] The first solenoid valve, the second solenoid valve, and the third solenoid valve are used to open and close the connecting parts and the various pipes according to the input electrical signal.

[0012] The intra-abdominal pressure detection device also includes:

[0013] A data acquisition device, used to acquire the operating status signal of the detection device;

[0014] A control device is used to send control signals to the execution device based on the status signals sent by the acquisition device in order to control the execution device;

[0015] The acquisition device includes an image capturing device, and the control device sends control signals to the execution device based on the image signals acquired by the image capturing device to control the execution device.

[0016] Furthermore, the operating status signal of the detection device includes:

[0017] The flow rate signal of the liquid in the pipe between the input bag and the connecting piece;

[0018] The flow rate signal of the liquid in the pipe of the syringe and the connecting piece;

[0019] The pressure sensor is connected to the flow rate signal of the liquid in the pipe.

[0020] The flow rate signal of the liquid in the pipe between the catheter and the first connection port;

[0021] The control device sends a control signal to the actuator to control the actuator based on the flow rate signal of the liquid in the pipe between the input bag and the connecting member, and / or the flow rate signal of the liquid in the pipe between the syringe and the connecting member, and / or the flow rate signal of the liquid in the pipe between the pressure sensor and the connecting member, and / or the flow rate signal of the liquid in the pipe between the catheter and the first connection port.

[0022] Furthermore, the intra-abdominal pressure detection device also includes:

[0023] A temperature control device is disposed between the urinary catheter and the first connection port. The temperature control device includes a temperature detection device and a heating device. The control device sends an electrical signal to the heating device according to the control signal sent by the temperature detection device to heat the liquid in the urinary catheter.

[0024] Furthermore, the intra-abdominal pressure detection device also includes:

[0025] Interactive devices are used by users to achieve human-computer interaction.

[0026] The control device sends a control signal to the execution device based on the control signal sent by the interaction device.

[0027] Furthermore, the interactive device includes:

[0028] The first interactive module is used by the user to start or stop intra-abdominal pressure monitoring;

[0029] The control device sends a control signal to the execution device based on the control signal sent by the first interaction module.

[0030] Furthermore, the interactive device also includes:

[0031] The second interactive module is used by the user to display the intra-abdominal pressure test results;

[0032] The control device sends a control signal to the second interaction module based on the control signal sent by the pressure sensor.

[0033] Furthermore, the intra-abdominal pressure detection device also includes:

[0034] A pressure sensor moving solenoid valve is used to move the position of a pressure sensor according to an input electrical signal;

[0035] The control device sends a control signal to the pressure sensor moving solenoid valve based on the image signal acquired by the image capturing device to realize the movement of the pressure sensor.

[0036] Furthermore, the actuator also includes:

[0037] The telescopic rod is used to advance the syringe based on the received electrical signal;

[0038] The control device sends a control signal to the telescopic rod based on the electrical signal sent by the acquisition device to control the syringe.

[0039] As a second aspect of this application, some embodiments of this application provide an intra-abdominal pressure detection method, comprising: detecting intra-abdominal pressure, wherein the intra-abdominal pressure detection method is implemented by the aforementioned intra-abdominal pressure detection device.

[0040] The intra-abdominal pressure detection method includes:

[0041] In response to the status signal of the intra-abdominal pressure detection device collected by the acquisition device, the operating status of the intra-abdominal pressure detection device under the current state is obtained;

[0042] When the flow rate signal of the liquid in the pipe between the input bag and the connecting member, and / or the flow rate signal of the liquid in the pipe between the syringe and the connecting member, and / or the flow rate signal of the liquid in the pipe between the pressure sensor and the connecting member, and / or the flow rate signal of the liquid in the pipe between the catheter and the first connection port is lower than a preset flow rate, a closing control signal is sent to the first solenoid valve, the second solenoid valve, and the third solenoid valve.

[0043] Furthermore, the intra-abdominal pressure detection method also includes:

[0044] In response to a control signal sent by a temperature detection device, the temperature t of the saline solution in the tubing between the catheter and the first connection port is acquired;

[0045] When the temperature t is between t0 and t1, a control signal is sent to the heating device to heat the saline in the tubing between the catheter and the first connection until the temperature t is higher than t1 and then stops.

[0046] When the temperature t is less than t0, a closing control signal is sent to the first solenoid valve, the second solenoid valve, and the third solenoid valve.

[0047] Furthermore, the intra-abdominal pressure detection method also includes:

[0048] In response to the image signal acquired by the image capturing device, the coordinate information of the upper edge of the pubic symphysis of the tested object is obtained;

[0049] When the coordinates of the upper edge of the pubic symphysis of the tested object are not on the same horizontal line as the reference point coordinates of the pressure sensor, a control signal is sent to the pressure sensor moving solenoid valve to move the pressure sensor until the coordinates of the upper edge of the pubic symphysis of the tested object are on the same horizontal line as the reference point coordinates of the pressure sensor.

[0050] Furthermore, the intra-abdominal pressure detection method also includes:

[0051] The image capturing device acquires the displacement between the body position of the object being measured and the preset standard body position. When the displacement exceeds the preset reference value, the control device sends a control signal to the interactive device and marks the measurement result.

[0052] When the displacement exceeds the preset reference value and the measurement cycle reaches 3 times, the control device sends a closing control signal to the first solenoid valve, the second solenoid valve, and the third solenoid valve, and at the same time sends an alarm message to the interactive device.

[0053] Furthermore, the method for acquiring the body position of the object being measured by the image capturing device includes:

[0054] Four marker points are placed at fixed locations on the object being tested;

[0055] Acquire a standard body position image of the subject under visible light illumination, mark the coordinates (a, b, c, d) of the marked points in the image, and obtain the region image R0 of the subject as a template;

[0056] Acquire an image of the object under test illuminated by a visible light source, and take the region to be identified (ar, br, c+r, d+r), where (a, b, c, d) are parameters in template creation and r is a configuration parameter, to obtain the image Ri of the marked points of the object under test;

[0057] Slide the window R0 across Ri and calculate the matching similarity γ of R0 on Ri. The calculation method is to calculate the matching value of R0 on the window image of Ri:

[0058] ,

[0059] Where m represents the pixel coordinate index in the image. This represents the pixel value at that coordinate in R0. This represents the pixel value at that coordinate in Ri;

[0060] When the matching similarity γ is greater than the preset value, it indicates that the displacement between the body position of the tested object and the preset standard body position is greater than the preset reference value.

[0061] Compared with the prior art, the technical solution provided by this invention has the following advantages:

[0062] This invention employs a combination of a data acquisition device, a control device, and an execution device to automatically measure bladder pressure in the subject, thereby improving measurement accuracy. It frees up the hands of medical staff and improves measurement efficiency when monitoring intra-abdominal pressure periodically and at high frequency. Additionally, the image acquisition device collects positional data of the subject, thus avoiding the impact of the subject's movement on the accuracy of the measurement data. Attached Figure Description

[0063] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0064] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0065] Figure 1 This is a schematic diagram of the signal transmission of an intra-abdominal pressure detection device according to an embodiment of this application;

[0066] Figure 2 This is a schematic diagram of the intra-abdominal pressure detection device according to an embodiment of this application;

[0067] Figure 3 This is a schematic diagram of the steps of an intra-abdominal pressure detection method according to an embodiment of this application.

[0068] Explanation of the labels in the diagram:

[0069] 100. Input bag;

[0070] 200. Syringe;

[0071] 300. Pressure sensor;

[0072] 400. Control device;

[0073] 500, Actuating device; 510, Connecting component; 520, First solenoid valve; 530, Second solenoid valve; 540, Third solenoid valve; 550, Telescopic rod; 560, Pressure sensor moving solenoid valve;

[0074] 600. Data acquisition device; 610. Image capturing device; 620. Flow meter; 630. Temperature detection device;

[0075] 700. Interactive device; 710. First interactive module; 720. Second interactive module;

[0076] 800. Heating device. Detailed Implementation

[0077] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0078] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0079] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0080] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0081] The names of messages or information exchanged between multiple devices in the embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of such messages or information.

[0082] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0083] like Figures 1 to 3As shown, an embodiment of the intra-abdominal pressure detection device of this application mainly includes: an input bag 100 for storing physiological saline; a syringe 200 for providing the power for the flow of physiological saline; a pressure sensor 300 for recording pressure values; and an execution device 500, which includes a connecting member 510. The input bag 100, syringe 200, and pressure sensor 300 are respectively connected to the connecting member 510 through pipes. The execution device 500 also includes a first solenoid valve 520, a second solenoid valve 530, and a third solenoid valve 540. The first solenoid valve 520 is provided in the pipe connecting the input bag 100 and the connecting member 510, the second solenoid valve 530 is provided in the pipe connecting the syringe 200 and the connecting member 510, and the third solenoid valve 540 is provided in the pipe connecting the pressure sensor 300 and the connecting member 510. The connecting member 510 also has... The device has a first connection port and a second connection port. The first connection port is connected to a urinary catheter via a pipe, and the second connection port is connected to a liquid storage device via a pipe. The first solenoid valve 520, the second solenoid valve 530, and the third solenoid valve 540 are used to open and close the connecting member 510 with each pipe according to an input electrical signal. The intra-abdominal pressure detection device also includes: a data acquisition device 600, which acquires the operating status signal of the detection device; and a control device 400, which sends a control signal to the execution device 500 based on the status signal sent by the data acquisition device 600 to control the execution device 500. The data acquisition device 600 includes an image capturing device 610, and the control device 400 sends a control signal to the execution device 500 based on the image signal acquired by the image capturing device 610 to control the execution device 500.

[0084] Specifically, the inlet bag 100 contains saline solution, and its outlet end is connected to a pipe. The other end of the pipe is fixedly connected to a connector 510. The syringe 200 is connected to the connector 510 through the pipe. When both the first solenoid valve 520 and the second solenoid valve 530 are open, pulling the syringe 200 draws the saline solution from the inlet bag 100 into the syringe 200. Then, by closing the first solenoid valve 520, the syringe 200 is connected to the catheter, allowing the syringe 200 to inject a measured amount of saline solution into the bladder through the catheter. Then, by closing the second solenoid valve 530 and simultaneously opening the third solenoid valve 540, the saline solution in the bladder can enter the pressure sensor 300 through the pipe. The value displayed on the pressure sensor 300 is the pressure inside the bladder at this time, which can be converted to obtain the intra-abdominal pressure.

[0085] More specifically, the first solenoid valve 520, the second solenoid valve 530, and the third solenoid valve 540 are all electrically connected to the control device 400, and the control device 400 is capable of sending electrical signals to open and close the first solenoid valve 520, the second solenoid valve 530, and the third solenoid valve 540. The control device 400 is a chip in the prior art capable of performing the above functions.

[0086] The user acquires the operating status signal of the detection device through the acquisition device 600. The operating status signal referred to here is the signal generated by the intra-abdominal pressure detection device during normal operation. Specifically, the operating status signal of the detection device includes: the flow rate signal of the liquid in the pipe between the input bag 100 and the connecting member 510; the flow rate signal of the liquid in the pipe between the syringe 200 and the connecting member 510; the flow rate signal of the liquid in the pipe between the pressure sensor 300 and the connecting member 510; and the flow rate signal of the liquid in the pipe between the catheter and the first connection port. Flow meters 620 are installed in the pipes between the input bag 100 and the connecting member 510, the pipes between the syringe 200 and the connecting member 510, the pipes between the pressure sensor 300 and the connecting member 510, and the pipe between the catheter and the first connection port. During the intra-abdominal pressure detection process, the flow meters 620 send their own flow data to the control device 400 in real time. When the flow meter 620 in one of the above pipes detects an abnormal flow, it indicates that the pipe at that location has been kinked or broken. At this time, the control device 400 can control the first solenoid valve 520, the second solenoid valve 530, and the third solenoid valve 540 to close in time and thus interrupt the detection of bladder pressure. That is, the control device 400 sends a control signal to the actuator 500 to control the actuator 500 based on the flow rate signal of the liquid in the pipe between the input bag 100 and the connecting member 510, and / or the flow rate signal of the liquid in the pipe between the syringe 200 and the connecting member 510, and / or the flow rate signal of the liquid in the pipe between the pressure sensor 300 and the connecting member 510, and / or the flow rate signal of the liquid in the pipe between the catheter and the first connection port.

[0087] In one specific embodiment, the intra-abdominal pressure detection device further includes a temperature control device 400, which is disposed between the catheter and the first connection port. The temperature control device 400 includes a temperature detection device 630 and a heating device 800. The control device 400 sends an electrical signal to the heating device 800 to heat the liquid in the catheter based on a control signal sent by the temperature detection device 630. When the intra-abdominal pressure detection device injects saline solution into the bladder of the subject, if the saline solution is too cold, it will irritate the bladder upon injection, causing bladder muscle contraction and resulting in inaccurate measurements of intrabladder pressure. Therefore, in order to solve this problem, a temperature detection device 630 and a heating device 800 are provided in the pipeline between the catheter and the connecting member 510. The temperature detection device 630 sends the specific temperature information of the liquid flowing in the pipeline to the control device 400. After calculation and judgment, the control device 400 sends a control signal to the heating device 800 or the execution device 500 to avoid inaccurate temperature measurement caused by the low temperature of the saline solution flowing into the bladder of the subject.

[0088] In one specific embodiment, the intra-abdominal pressure detection device further includes a pressure sensor movement solenoid valve 560, used to move the pressure sensor 300 according to an input electrical signal. The control device 400 sends a control signal to the pressure sensor movement solenoid valve 560 based on the image signal acquired by the image capturing device 610 to move the pressure sensor 300. The image capturing device 610 acquires an image of the object being measured, and then the control device 400 determines whether the coordinates of the upper edge of the pubic symphysis and the reference coordinates of the pressure sensor 300 are on the same horizontal plane. If they are not on the same horizontal plane, the control device 400 controls the pressure sensor movement solenoid valve 560 to move the pressure sensor 300, causing the pressure sensor 300 to actively align with the upper edge of the pubic symphysis, ensuring the accuracy of the final measured intrabladder pressure data.

[0089] In one specific embodiment, the intra-abdominal pressure detection device further includes: an interactive device 700 for user operation to achieve human-computer interaction; wherein, the control device 400 sends a control signal to the execution device 500 according to the control signal sent by the interactive device 700.

[0090] The interactive device 700 primarily provides a human-computer interface for users to set data and also provides feedback to the user on various data received by the control device 400. As a specific solution, the interactive device 700 can employ a touchscreen display with a processing chip and memory. The touchscreen can be used to display data and allow users to input data via touch. Users can achieve human-computer interaction by operating commands on the touchscreen. Using a touchscreen as the carrier of the interactive module improves the intelligence of human-computer interaction and reduces the difficulty of operation.

[0091] Specifically, the interactive device 700 includes: a first interactive module 710, for user operation to start or stop intra-abdominal pressure detection; wherein, the control device 400 sends a control signal to the execution device 500 based on the control signal sent by the first interactive module 710. The interactive device 700 also includes: a second interactive module 720, for user operation to display the intra-abdominal pressure detection results; wherein, the control device 400 sends a control signal to the second interactive module 720 based on the control signal sent by the pressure sensor 300.

[0092] More specifically, the operator starts and stops intra-abdominal pressure detection through the first interactive module 710, and can also set the frequency and procedures of the operation through the first interactive module 710. The control device 400 sends an electrical signal to the execution device 500 to start the intra-abdominal pressure detection based on the control signal sent by the first interactive module 710. The execution device 500 also includes a telescopic rod 550, which is used to advance the syringe 200 based on the received electrical signal. The control device 400 sends a control signal to the telescopic rod 550 based on the electrical signal sent by the acquisition device 600 to control the syringe 200. That is, after receiving the control signal sent by the first interactive module 710, the control device 400 sends a power-on start signal to the first solenoid valve 520, the second solenoid valve 530, the third solenoid valve 540, the telescopic rod 550, and the acquisition device 600.

[0093] As another embodiment of this application, an intra-abdominal pressure detection method is used to detect intra-abdominal pressure. The intra-abdominal pressure detection method is implemented by the aforementioned intra-abdominal pressure detection device, and includes:

[0094] S100: In response to the status signal of the intra-abdominal pressure detection device collected by the acquisition device 600, obtain the operating status of the intra-abdominal pressure detection device under the current state;

[0095] S200: When the flow rate signal of the liquid in the pipe between the input bag 100 and the connecting member 510, and / or the flow rate signal of the liquid in the pipe between the syringe 200 and the connecting member 510, and / or the flow rate signal of the liquid in the pipe between the pressure sensor 300 and the connecting member 510, and / or the flow rate signal of the liquid in the pipe between the catheter and the first connection port is lower than a preset flow rate, a closing control signal is sent to the first solenoid valve 520, the second solenoid valve 530, and the third solenoid valve 540.

[0096] Specifically, flow meters 620 are installed in the pipes between the input bag 100 and the connecting member 510, the pipes between the syringe 200 and the connecting member 510, the pipes between the pressure sensor 300 and the connecting member 510, and the pipe between the catheter and the first connection port. During the intra-abdominal pressure detection process, the flow meter 620 sends its own flow data to the control device 400 in real time. When the flow meter 620 in one of the above-mentioned pipes detects an abnormal flow, it indicates that the pipe at that location has been kinked or broken. At this time, the control device 400 can control the first solenoid valve 520, the second solenoid valve 530, and the third solenoid valve 540 to close in time and thus interrupt the detection of bladder pressure.

[0097] S300, in response to the control signal sent by the temperature detection device 630, the temperature t of the saline solution in the pipe between the catheter and the first connection port is obtained;

[0098] S400. When the temperature t is between t0 and t1, a control signal is sent to the heating device 800 so that the heating device 800 heats the saline in the pipe between the catheter and the first connection port until the temperature t is higher than t1 and then stops.

[0099] Specifically, the heating device 800 is located at the end of the tube away from the catheter. When the temperature t0 < t < t1, the heating device 800 can heat it to temperature t1, which is slightly higher than the temperature of urine in the bladder.

[0100] S500: When the temperature t is less than t0, a closing control signal is sent to the first solenoid valve 520, the second solenoid valve 530, and the third solenoid valve 540.

[0101] When t < t0, it indicates that the temperature of the saline solution is much lower than the optimal temperature t1. Therefore, the heating device 800 cannot heat the saline solution to t1 in a short time. Thus, the control device 400 sends a closing control signal to the first solenoid valve 520, the second solenoid valve 530, and the third solenoid valve 540, and the measurement is terminated.

[0102] The intra-abdominal pressure detection method further includes:

[0103] S600: In response to the image signal collected by the image capturing device 610, obtain the coordinate information of the upper edge of the pubic symphysis of the tested object;

[0104] S700: When the coordinate information of the upper edge of the pubic symphysis of the tested object is not on the same horizontal line as the reference point coordinate of the pressure sensor 300, a control signal is sent to the pressure sensor moving solenoid valve 560 so that the pressure sensor moving solenoid valve 560 moves the pressure sensor 300 until the coordinate information of the upper edge of the pubic symphysis of the tested object is on the same horizontal line as the reference point coordinate of the pressure sensor 300.

[0105] The intra-abdominal pressure detection method further includes:

[0106] S800, the image capturing device 610 acquires the displacement between the body position of the object being measured and the preset standard body position. When the displacement exceeds the preset reference value, the control device 400 sends a control signal to the interactive device 700 and marks the measurement result.

[0107] S900 When the displacement exceeds the preset reference value and the measurement cycle reaches 3 times, the control device 400 sends a closing control signal to the first solenoid valve 520, the second solenoid valve 530, and the third solenoid valve 540, and simultaneously sends an alarm message to the interactive device 700.

[0108] Specifically, to ensure measurement accuracy, the subject's position is crucial. When lying completely flat, abdominal muscles may contract involuntarily, while a semi-recumbent position relaxes these muscles, more accurately reflecting the true bladder pressure. Therefore, a semi-recumbent position is generally adopted, with a Foley catheter inserted to empty the bladder. During the test, the subject must maintain a stable posture and avoid movement or coughing (which may cause pressure fluctuations). Therefore, if the displacement between the subject's position and the preset standard position captured by the image capturing device 610 exceeds a set value, it indicates that the subject has shifted. A large displacement may result in the subject being in a non-semi-recumbent position, leading to an inaccurate measurement.

[0109] The method by which the image capturing device 610 acquires the body position of the subject includes:

[0110] Four markers were placed at fixed positions on the subject's lower abdomen, with one of them located at the upper edge of the pubic symphysis.

[0111] A standard body position image of the test object under visible light source is acquired, and the coordinates (a, b, c, d) of the marked points in the image are marked to obtain the region image R0 of the test object as a template. The template is used to locate the position of the marked points of the test object in subsequent steps.

[0112] An image of the object under visible light is acquired, and the region to be identified (ar, br, c+r, d+r) is selected, where (a, b, c, d) are parameters in template creation, and r is a configuration parameter (1 to 5). This yields the image Ri of the marked points on the object. When the object has a large weight, a larger value for r is used to reduce false alarms; when the object has a small weight, a smaller value for r is used for greater accuracy.

[0113] Slide the window R0 across Ri and calculate the matching similarity γ of R0 on Ri. The calculation method is to calculate the matching value of R0 on the window image of Ri:

[0114] ,

[0115] Where m represents the pixel coordinate index in the image. This represents the pixel value at that coordinate in R0. This represents the pixel value at that coordinate in Ri;

[0116] When the matching similarity γ is greater than the preset value, it indicates that the displacement between the measured object's body position and the preset standard body position is greater than the preset reference value. The specific implementation of the device is achievable with existing technology and will not be elaborated upon here.

[0117] The systems, devices, or modules described in the above embodiments can be implemented by computer chips or physical entities, or by products with certain functions. A typical implementation device is a computer. Specifically, a computer can be, for example, a personal computer, laptop computer, cellular phone, camera phone, smartphone, personal digital assistant, media player, navigation device, email device, game console, tablet computer, wearable device, or any combination of these devices. For ease of description, the above devices are described by function as various units. Of course, in implementing this specification, the functions of each unit can be implemented in one or more software and / or hardware.

[0118] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. The present invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, produce implementations of the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 The computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0119] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the functions specified in one or more boxes. In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory. Memory may include non-persistent storage in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0120] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital character versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0121] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A method for detecting intra-abdominal pressure, characterized in that: Include: In response to the status signal of the intra-abdominal pressure detection device collected by the acquisition device, the operating status of the intra-abdominal pressure detection device under the current state is obtained; When the flow rate signals of the liquid in the pipe between the input bag and the connecting part, the liquid in the pipe between the syringe and the connecting part, the liquid in the pipe between the pressure sensor and the connecting part, and the liquid in the pipe between the catheter and the first connection port are lower than the preset flow rate, a closing control signal is sent to the first solenoid valve, the second solenoid valve, and the third solenoid valve. The intra-abdominal pressure detection method further includes: The image capturing device acquires the displacement between the body position of the object being measured and the preset standard body position. When the displacement exceeds the preset reference value, the control device sends a control signal to the interactive device and marks the measurement result. When the displacement exceeds the preset reference value and the measurement cycle reaches 3 times, the control device sends a closing control signal to the first solenoid valve, the second solenoid valve, and the third solenoid valve, and at the same time sends an alarm message to the interactive device. The method for acquiring the body position of the test object using the image capturing device includes: placing four marker points at fixed positions on the test object; Acquire a standard body position image of the subject under visible light illumination, mark the coordinates (a, b, c, d) of the marked points in the image, and obtain the region image R0 of the subject as a template; Acquire an image of the object under test illuminated by a visible light source, and take the region to be identified (ar, br, c+r, d+r), where (a, b, c, d) are parameters in template creation and r is a configuration parameter, to obtain the image Ri of the marked points of the object under test; Slide the window R0 across Ri and calculate the matching similarity γ of R0 on Ri. The calculation method is to calculate the matching value of R0 on the window image of Ri: ; Where m represents the pixel coordinate index in the image, R0m represents the pixel value at that coordinate in R0, and Rim represents the pixel value at that coordinate in Ri; When the matching similarity γ is greater than the preset value, it indicates that the displacement between the body position of the tested object and the preset standard body position is greater than the preset reference value.

2. The intra-abdominal pressure detection method according to claim 1, characterized in that: The intra-abdominal pressure detection method further includes: in response to a control signal sent by a temperature detection device, acquiring the temperature t of the saline solution in the pipe between the catheter and the first connection port; when the temperature t is between t0 and t1, sending a control signal to a heating device to cause the heating device to heat the saline solution in the pipe between the catheter and the first connection port until the temperature t is higher than t1 and then stopping. When the temperature t is less than t0, a closing control signal is sent to the first solenoid valve, the second solenoid valve, and the third solenoid valve.

3. The intra-abdominal pressure detection method according to claim 2, characterized in that: The intra-abdominal pressure detection method further includes: In response to the image signal acquired by the image capturing device, the coordinate information of the upper edge of the pubic symphysis of the tested object is obtained; When the coordinates of the upper edge of the pubic symphysis of the tested object are not on the same horizontal line as the reference point coordinates of the pressure sensor, a control signal is sent to the pressure sensor moving solenoid valve to move the pressure sensor until the coordinates of the upper edge of the pubic symphysis of the tested object are on the same horizontal line as the reference point coordinates of the pressure sensor.

4. An intra-abdominal pressure detection device, used to implement the intra-abdominal pressure detection method as described in any one of claims 1 to 3, characterized in that: include, Infusion bag, used to store physiological saline; A syringe is used to provide the power for the flow of saline solution; Pressure sensor, used to record pressure values; An actuator includes a connecting member, wherein the input bag, syringe, and pressure sensor are respectively connected to the connecting member via pipes. The actuator also includes a first solenoid valve, a second solenoid valve, and a third solenoid valve. The first solenoid valve is provided in the pipe connecting the input bag and the connecting member, the second solenoid valve is provided in the pipe connecting the syringe and the connecting member, and the third solenoid valve is provided in the pipe connecting the pressure sensor and the connecting member. The connecting member also has a first connection port and a second connection port at both ends. The first connection port is connected to a catheter via a pipe, and the second connection port is connected to a reservoir via a pipe. The first solenoid valve, the second solenoid valve, and the third solenoid valve are used to open and close the connecting parts and the various pipes according to the input electrical signal. The intra-abdominal pressure detection device also includes: A data acquisition device, used to acquire the operating status signal of the detection device; A control device is used to send control signals to the execution device based on the status signals sent by the acquisition device in order to control the execution device; The acquisition device includes an image capturing device, and the control device sends control signals to the execution device based on the image signals acquired by the image capturing device to control the execution device.

5. The intra-abdominal pressure detection device according to claim 4, characterized in that: The operating status signal of the detection device includes: The flow rate signal of the liquid in the pipe between the input bag and the connecting member; the flow rate signal of the liquid in the pipe between the syringe and the connecting member; the flow rate signal of the liquid in the pipe between the pressure sensor and the connecting member; the flow rate signal of the liquid in the pipe between the catheter and the first connection port; The control device sends a control signal to the actuator to control the actuator based on the flow rate signal of the liquid in the pipe between the input bag and the connecting member, and / or the flow rate signal of the liquid in the pipe between the syringe and the connecting member, and / or the flow rate signal of the liquid in the pipe between the pressure sensor and the connecting member, and / or the flow rate signal of the liquid in the pipe between the catheter and the first connection port.

6. The intra-abdominal pressure detection device according to claim 4, characterized in that: The intra-abdominal pressure detection device also includes: A temperature control device is disposed between the urinary catheter and the first connection port. The temperature control device includes a temperature detection device and a heating device. The control device sends an electrical signal to the heating device according to the control signal sent by the temperature detection device to heat the liquid in the urinary catheter.

7. The intra-abdominal pressure detection device according to claim 5, characterized in that: The intra-abdominal pressure detection device also includes: Interactive devices are used by users to achieve human-computer interaction. The control device sends a control signal to the execution device based on the control signal sent by the interaction device.

8. The intra-abdominal pressure detection device according to claim 5, characterized in that: The intra-abdominal pressure detection device also includes: A pressure sensor moving solenoid valve is used to move the position of a pressure sensor according to an input electrical signal; The control device sends a control signal to the pressure sensor moving solenoid valve based on the image signal acquired by the image capturing device to realize the movement of the pressure sensor.

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