A non-invasive intra-abdominal pressure measurement device

Abstract

The present invention discloses a non-invasive intra-abdominal pressure measuring device, belonging to the technical field of medical measurement. A non-invasive intra-abdominal pressure measuring device includes a measurement module, a wireless transmission module, a data processing module and a feedback module; the measurement module is connected to the data processing module through wireless signal transmission by the wireless transmission module. The measurement module includes a finger sleeve, a connecting part and a pressure measuring element. The end of the finger sleeve is detachably connected to both sides of the connecting part. The pressure measuring element is fixedly installed in the middle of the connecting part and is used to measure the elastic modulus and pressure value of the rectal wall; the data processing module can process the pressure value based on the obtained elastic modulus of the rectal wall to obtain the intra-abdominal pressure value; the feedback module is electrically connected to the data processing module and is used to analyze the obtained intra-abdominal pressure data and feedback the result.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical measurement, and more specifically, relates to a non-invasive intra-abdominal pressure measurement device. Background Art

[0002] Intra-abdominal pressure refers to the steady-state pressure within the abdominal cavity. Currently, the measurement of intra-abdominal pressure is mainly divided into two methods: direct measurement and indirect measurement. Direct measurement is mainly carried out by making an incision in the abdomen for measurement, which is accurate, but this method is an invasive operation, and most patients have relatively complex abdominal conditions; therefore, indirect measurement methods are mostly used currently. The indirect measurement method indirectly reflects the abdominal pressure by measuring the pressure of abdominal organs, without the need to make an incision in the abdomen. Among them, the intravesical pressure can more accurately reflect the abdominal pressure and is also the most commonly used method for measuring abdominal pressure clinically.

[0003] Common indirect measurement methods include transgastric measurement, transabdominal circumference measurement, and transvesical measurement, etc. Transgastric measurement requires pre-evacuating the gastric contents and injecting physiological saline for pressure measurement. This method has a high measurement accuracy but complex operation; transabdominal circumference measurement requires the patient to lie flat and wrap a flexible ruler around the abdomen. The operation is simple but the accuracy is only 40%-60%; transvesical measurement requires inserting a urinary catheter into the patient's urethra and then connecting a pressure tube equipped with a pressure sensor to the urinary catheter, and injecting physiological saline into the pressure tube to fill the urinary catheter with physiological saline and then measuring the pressure sensed by the pressure tube. This method also has a relatively cumbersome operation. The patient needs to lie still in bed, which is not very friendly to the patient experience, and has relatively high requirements for the doctor's experience. At the same time, the complex pipeline will also increase the probability of infection. For example, a transvesical abdominal pressure measurement device disclosed in the Chinese invention patent literature (CN202310606882.5), this invention completes the medical operations of bladder pressure measurement, urination, and bladder drug administration for patients by connecting the bladder connecting tube to the pressure measurement tube, urine bag connecting tube, and water injection tube respectively, reducing two three-way valves and four catheters, and reducing the complexity of the operation for medical staff; however, measuring the intra-abdominal pressure still requires water injection for pressure measurement and cannot be monitored in real time.

[0004] Therefore, we need a device that can non-invasively and real-time measure the intra-abdominal pressure. Summary of the Invention

[0005] The purpose of the present invention is to provide a non-invasive intra-abdominal pressure measurement device, which has a simple structure, is easy to use, and can non-invasively complete the real-time monitoring of the intra-abdominal pressure.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A non-invasive intra-abdominal pressure measuring device of the present invention includes a measurement module, a wireless transmission module, a data processing module, and a feedback module; the measurement module is connected to the data processing module through a wireless signal transmitted by the wireless transmission module, and the measurement module is used to measure the elastic modulus and pressure value of the rectal wall; the data processing module is used to process the measured elastic modulus and pressure value of the rectal wall and obtain the intra-abdominal pressure value; the feedback module is electrically connected to the data processing module and is used to analyze the obtained intra-abdominal pressure data and feedback the result.

[0008] The measurement module includes a finger cot, a connecting part, and a pressure measuring element; the contour of the connecting part is an arc surface, the end of the finger cot is detachably connected to both sides of the connecting part, and the pressure measuring element is fixedly installed in the middle of the connecting part for measuring the elastic modulus and pressure value of the rectal wall.

[0009] The data processing module includes a central data unit and a display unit. The central data unit is used to receive the elastic modulus and pressure value of the rectal wall transmitted by the wireless transmission module and convert it into the intra-abdominal pressure value; the display unit is data-connected to the central data unit and is used to display the elastic modulus of the rectal wall and the intra-abdominal pressure value in real time, facilitating the timely acquisition of the intra-abdominal pressure data of the patient.

[0010] As a further improvement of the present invention, the pressure measuring element includes an actuator, a modulus sensor, and a base; the base is fixedly installed on the surface of the connecting part, the actuator is located inside the base, the modulus sensor is located below the actuator, and the base is used to fix the actuator and the modulus sensor; the modulus sensor is used to obtain the elastic modulus and pressure value of the rectal wall; the actuator can generate a fluctuation signal to help the modulus sensor obtain deeper mechanical information of the rectal wall during the measurement process and convert it into intra-abdominal pressure information, so as to obtain the intra-abdominal pressure according to the corresponding relationship between the rectal wall pressure and the intra-abdominal pressure.

[0011] As a further improvement of the present invention, the actuator includes, but is not limited to, any one of a mechanical actuator, a magnetostrictive actuator, and a piezoelectric ceramic actuator.

[0012] As a further improvement of the present invention, the modulus sensor includes a housing, a pressure sensor, and a tip. The pressure sensor is located inside the housing, and the tip is located below the pressure sensor and is used to touch the rectal wall to cause the pressure sensor to deform to obtain the corresponding pressure value, and this pressure value can be converted into the elastic modulus of the rectal wall according to the corresponding relationship.

[0013] As a further improvement of the present invention, the finger cot is made of silicone material with mechanical flexibility, chemical inertness, and good biocompatibility; the finger cot can also be in the form of a glove, which is convenient for medical staff to operate, and is sterilized before measurement to avoid infection.

[0014] As a further improvement of the present invention, the wireless transmission module includes, but is not limited to, any one of WiFi, Bluetooth, and NFC transmission technologies, and can transmit the pressure value and the rectal wall elastic modulus obtained by the sensor to the data processing module.

[0015] As a further improvement of the present invention, the feedback module includes a storage module and an alarm module; the storage module is used to store the rectal wall pressure collected by the measurement module and the abdominal cavity pressure value converted by the central data unit; the alarm module is used to prompt the abnormal conditions of the patient during the measurement of the abdominal cavity pressure.

[0016] As a further improvement of the present invention, a pull rope is wound around the connecting part, and the pull rope pulls the connecting part to rotate around the finger cot. The pull rope pulls the switching measurement module to measure the circumferential rectal wall pressure or the pressure pointing to the rectal wall; a section of pull rope groove is opened in the middle of the upper part of the finger cot, and the pull rope slides inside the pull rope groove to avoid the deviation of the pull rope.

[0017] As a further improvement of the present invention, a connecting groove is opened in the middle of the inner side of the connecting part, and a connecting column is arranged inside the connecting groove; a pull ring is arranged in the middle of the pull rope, and the pull ring is detachably connected to the connecting column for pulling the connecting part to rotate around the finger cot.

[0018] As a further improvement of the present invention, the actuator can be a magnetostrictive actuator, including an upper gasket, a lower gasket, a magnet, and a coil. The coil is fixedly connected to the lower gasket and is used to generate a corresponding alternating magnetic field; the magnet is fixedly connected to the upper gasket and vibrates under the influence of the alternating magnetic field, and is used to generate a vibration waveform on the basis of obtaining the rectal wall elastic modulus by the pressure sensor, and further calculate the abdominal cavity pressure value of the patient according to the waveform amplitude.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: The non-invasive abdominal cavity pressure measuring device of the present invention has a reasonable design structure, is easy to operate, and has good flexibility. It can realize the real-time measurement of the patient's abdominal cavity pressure under the condition of avoiding infection and being friendly to the patient, and provide a more timely and accurate data basis for clinical diagnosis; by setting a rotatable connecting part on the finger cot, it can detect the rectal modulus and pressure conditions in the normal direction of the finger for one week and the rectal modulus and pressure conditions along the finger direction, and it is more convenient to manually switch the detection method; by winding a pull rope around the bottom of the connecting part to pull the connecting part to rotate around the finger cot, the operation is simple and the position of the connecting part can be switched at any time; after obtaining the rectal wall elastic modulus information by using the pressure sensor, the actuator is slightly vibrated to generate a vibration waveform on the basis of the obtained elastic modulus, and the abdominal cavity pressure value of the patient is further calculated according to the waveform amplitude. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present invention;

[0021] Figure 2 is a schematic semi-sectional structure diagram of the pressure measuring element of the connecting part of the present invention;

[0022] Figure 3 Schematic diagram of the fingerstall drawstring structure of the present invention;

[0023] Figure 4 Enlarged schematic diagram of the structure at position A of the present invention;

[0024] Figure 5 Schematic diagram of the pressure measuring element structure of the second embodiment of the present invention.

[0025] Description of the reference numerals in the figure:

[0026] 1 Measuring module, 11 Fingerstall, 111 Drawstring groove, 112 Drawstring, 113 Pulling ring, 12 Connecting part, 121 Connecting groove, 122 Connecting post, 13 Pressure measuring element, 131 Actuator, 132 Modulus sensor, 1321 Housing, 1322 Pressure sensor, 1323 Tip, 133 Base, 2 Wireless transmission module, 3 Data processing module, 31 Central data unit, 32 Display unit, 4 Feedback module, 41 Storage module, 42 Alarm module. Detailed implementation manners

[0027] Specific embodiment 1: Please refer to Figures 1 - 5 A non-invasive intra-abdominal pressure measuring device, comprising a measuring module 1, a wireless transmission module 2, a data processing module 3 and a feedback module 4; the measuring module 1 is connected to the data processing module 3 through a wireless signal transmitted by the wireless transmission module 2, and the data processing module 3 and the feedback module 4 correspond to software in a mobile phone or a computer. The measuring module 1 is used to measure the elastic modulus and pressure value of the rectal wall; since the elastic modulus and pressure value of the rectal wall are linearly related to the intra-abdominal pressure value, the data processing module 3 can process the measured elastic modulus and pressure value of the rectal wall and obtain the intra-abdominal pressure value; the feedback module 4 is electrically connected to the data processing module 3 and is used to analyze the obtained intra-abdominal pressure data and feedback the obtained result.

[0028] The measuring module 1 includes a fingerstall 11, a connecting part 12 and a pressure measuring element 13; the contour of the connecting part 12 is an arc surface, and the end of the fingerstall 11 is detachably connected to both sides of the connecting part 12 by a hinged manner. The connecting part 12 can be adjusted to the finger surface direction or the finger pointing direction; if the pressure measuring element 13 is in the finger surface direction, it may cause insufficient finger insertion length. Therefore, switching the pressure measuring element 13 to the pointing direction can extend the finger operation length and achieve a better purpose of measuring the intra-abdominal pressure. The pressure measuring element 13 is fixedly installed in the middle of the connecting part 12, and the rectal wall can be pressed or pushed equidistantly by fingers. Each time it is pressed and stationary, the pressure measuring element 13 will automatically analyze the elastic modulus of the rectal wall, and repeating multiple times can increase the accuracy of the measurement data.

[0029] The data processing module 3 includes a central data unit 31 and a display unit 32. The central data unit 31 can receive the elastic modulus and pressure value of the rectal wall conveyed by the wireless transmission module 2 and convert them into abdominal pressure values according to the corresponding relationship between the rectal wall pressure and the abdominal pressure; the display unit 32 is data-connected to the central data unit 31 and can display the elastic modulus of the rectal wall and the abdominal pressure value in real time, facilitating doctors to obtain the abdominal pressure data of patients in a timely manner and make timely judgments on the patient's condition.

[0030] Specifically, as Figure 2 shown, the pressure measuring element 13 includes an actuator 131, a modulus sensor 132, and a base 133; the base 133 is fixedly installed on the surface of the connecting portion 12, the actuator 131 is located inside the base 133, the modulus sensor 132 is located below the actuator 131, and the base 133 is used to fix the actuator 131 and the modulus sensor 132; the modulus sensor 132 can obtain the elastic modulus and pressure value of the rectal wall after the rectal wall is pressed by hand; the actuator 131 can generate a fluctuation signal, and during the process of the modulus sensor 132 measuring the elastic modulus and pressure value of the rectal wall, a vibration waveform is generated on the basis of the elastic modulus obtained by the modulus sensor 132 through the vibration generated by the actuator 131, so as to better obtain the mechanical information of the deeper layer of the rectal wall, and thus the abdominal pressure can be obtained according to the corresponding relationship between the rectal wall pressure and the abdominal pressure.

[0031] Specifically, the actuator 131 includes, but is not limited to, any one of a mechanical actuator, a magnetic actuator, and a piezoelectric ceramic actuator.

[0032] Specifically, the modulus sensor 132 includes a housing 1321, a pressure sensor 1322, and a tip 1323. The pressure sensor 1322 is located inside the housing 1321, and the tip 1323 is located below the pressure sensor 1322 and is used to touch the rectal wall to cause the pressure sensor 1322 to deform to obtain the corresponding pressure value, and this pressure value can be converted into the elastic modulus of the rectal wall according to the corresponding relationship, and the collection of the elastic modulus and pressure of the rectal wall is realized through the pressing operation.

[0033] Specifically, the finger cot 11 is made of silica gel material with mechanical flexibility, chemical inertness, and good biocompatibility; the finger cot 11 can also be in the form of a glove, as long as it satisfies the condition of synchronously installing the pressure measuring element 13 at the end of the finger of the glove, which is convenient for medical staff to operate; and sterilization operation is carried out before measurement to avoid infection.

[0034] Specifically, the wireless transmission module 2 includes, but is not limited to, any one of WiFi, Bluetooth, and NFC transmission technologies, and can transmit the pressure value and the elastic modulus of the rectal wall obtained by the modulus sensor 132 to the data processing module 3.

[0035] Specifically, the feedback module 4 includes a storage module 41 and an alarm module 42. The storage module 41 is used to store the rectal wall pressure collected by the measurement module 1 and the abdominal pressure value converted by the central data unit 31. The alarm module 42 is used to prompt the abnormal conditions of the patient during the abdominal pressure measurement.

[0036] Specifically, as Figure 3 shown, a pull rope 112 is wound around the connecting part 12. The pull rope 112 pulls the connecting part 12 to rotate around the finger sleeve 11. The pull rope 112 pulls the switching measurement module 1 to measure the circumferential rectal wall pressure or the pressure pointing to the rectal wall. A pull rope groove 111 is opened in the middle of the upper part of the finger sleeve 11, and the pull rope 112 slides inside the pull rope groove 111 to prevent the pull rope 112 from shifting.

[0037] Specifically, as Figure 4 shown, a connecting groove 121 is opened in the middle of the inner side of the connecting part 12, and a connecting column 122 is arranged inside the connecting groove 121. A pull ring 113 is arranged in the middle of the pull rope 112, and the pull ring 113 is detachably connected to the connecting column 122 by sleeving or winding to pull the connecting part 12 to rotate around the finger sleeve 11.

[0038] Specifically, as Figure 5 shown, the actuator 131 can be a magnetic actuator, including an upper gasket 1311, a lower gasket 1312, a magnet 1313 and a coil 1314. The coil 1314 is fixedly connected to the lower gasket 1312. When an alternating current is applied, the coil 1314 will generate a corresponding alternating magnetic field. The magnet 1313 is fixedly connected to the upper gasket 1311 and vibrates under the influence of the alternating magnetic field to generate a vibration waveform on the basis of the rectal wall elastic modulus obtained by the pressure sensor, and further calculate the abdominal pressure value of the patient according to the waveform amplitude.

[0039] During use, turn on the software in the corresponding mobile phone or computer to calibrate and zero the data processing module 3. After the interface prompts that it is ready, the medical staff wears the disinfected finger sleeve 11 and inserts it into the patient's anal area to reach the rectal wall; by pulling the pull rope 112, the connecting part 12 is rotated around the finger sleeve 11 to switch the measurement module to measure the circumferential rectal wall pressure or the pressure pointing to the rectal wall; press the rectal wall at equal intervals and stay still each time. The pressure measuring element 13 will obtain the elastic modulus of the rectal wall. Repeat multiple times to increase the accuracy of the measurement data; press the joint between the rectal wall and the abdominal cavity, collect the corresponding elastic modulus of the rectal wall, and obtain the abdominal cavity pressure according to the corresponding relationship between the corresponding pressure value and the abdominal cavity pressure; press or finger-press the rectal wall to obtain the elastic modulus information of the rectal wall. Then, through the slight vibration of the actuator 131, a vibration waveform can be generated on the basis of the obtained elastic modulus to better obtain the mechanical information of the deeper layer of the rectal wall; the detected elastic modulus information of the rectal wall is transmitted to the central data unit 31 through a wireless signal by the wireless transmission module 2. The central data unit 31 determines the elastic modulus and mechanical information of the rectal wall part and obtains the abdominal cavity pressure value according to its linear relationship with the abdominal cavity pressure. The abdominal cavity pressure value is obtained by an indirect method and displayed on the interface of the display unit 32; after the data collection is completed, the data is exported via the storage module 41 for subsequent clinical diagnosis. At the same time, a warning can be issued through the alarm module 42 when abnormal data is detected to indicate the abnormal condition of the patient during the abdominal cavity pressure measurement.

[0040] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A non-invasive intra-abdominal pressure measuring device, characterized in that: It includes a measurement module (1), a wireless transmission module (2), a data processing module (3) and a feedback module (4); the measurement module (1) is connected to the data processing module (3) through a wireless signal transmitted by the wireless transmission module (2), and the measurement module (1) is used to measure the elastic modulus and pressure value of the rectal wall; the data processing module (3) is used to further process the pressure value on the basis of measuring the elastic modulus of the rectal wall to obtain the abdominal cavity pressure value; The feedback module (4) is electrically connected to the data processing module (3) and is used to analyze the obtained abdominal cavity pressure data and feedback the results; The measurement module (1) includes a finger sleeve (11), a connecting part (12) and a pressure measuring element (13); the contour of the connecting part (12) is an arc surface, the end of the finger sleeve (11) is detachably connected to both sides of the connecting part (12), and the pressure measuring element (13) is fixedly installed in the middle of the connecting part (12) and is used to measure the elastic modulus and pressure value of the rectal wall; The data processing module (3) includes a central data unit (31) and a display unit (32). The central data unit (31) is used to receive the elastic modulus and pressure value of the rectal wall conveyed by the wireless transmission module (2) and convert it into the abdominal cavity pressure value; the display unit (32) is data-connected to the central data unit (31) and is used to display the elastic modulus of the rectal wall and the abdominal cavity pressure value; A pull rope (112) is wound around the connecting part (12), and the pull rope (112) pulls the connecting part (12) to rotate around the finger sleeve (11) for switching the measurement module (1) to measure the circumferential rectal wall pressure and the pressure pointing to the rectal wall; a pull rope groove (111) is opened in the middle of the upper part of the finger sleeve (11), and the pull rope (112) slides inside the pull rope groove (111) to avoid the deviation of the pull rope (112); A connecting groove (121) is opened in the middle of the inner side of the connecting part (12), and a connecting column (122) is arranged inside the connecting groove (121); a pull ring (113) is arranged in the middle of the pull rope (112), and the pull ring (113) is detachably connected to the connecting column (122) for pulling the connecting part (12) to rotate around the finger sleeve (11); The pressure measuring element (13) includes an actuator (131), a modulus sensor (132) and a base (133); the base (133) is fixedly installed on the surface of the connecting part (12), the actuator (131) is located inside the base (133), and the modulus sensor (132) is located below the actuator (131); the modulus sensor (132) is used to obtain the elastic modulus and pressure value of the rectal wall; the actuator (131) is used to generate a fluctuation signal to help the modulus sensor (132) obtain the mechanical information of the deeper layer of the rectal wall during the measurement process and convert it into abdominal cavity pressure information; The actuator (131) is a magnetostrictive actuator; The modulus sensor (132) includes a housing (1321), a pressure sensor (1322) and a tip (1323). The pressure sensor (1322) is located inside the housing (1321), and the tip (1323) is located below the pressure sensor (1322) and is used to touch the rectal wall to deform the pressure sensor (1322) to obtain the corresponding pressure value.

2. The non-invasive intra-abdominal pressure measuring device according to claim 1, wherein: The actuator (131) includes an upper gasket (1311), a lower gasket (1312), a magnet (1313) and a coil (1314). The coil (1314) is fixedly connected to the lower gasket (1312); the magnet (1313) is fixedly connected to the upper gasket (1311).

3. An invasive abdominal pressure measuring device according to claim 1, characterized in that: The finger cot (11) is made of silicone material with mechanical flexibility, chemical inertness and good biocompatibility.

4. The non-invasive intra-abdominal pressure measuring device according to claim 1, wherein: The wireless transmission module (2) is any one of WiFi, Bluetooth and NFC transmission technologies.

5. The non-invasive intra-abdominal pressure measuring device according to claim 1, wherein: The feedback module (4) includes a storage module (41) and an alarm module (42); the storage module (41) is used to store the rectal wall pressure collected by the measurement module (1) and the abdominal pressure value converted by the central data unit (31). The alarm module (42) is used to prompt the abnormal conditions of the patient during the abdominal pressure measurement.

Images