A borborygmus monitoring device

Abstract

The application discloses an intestinal sound monitoring device, and belongs to the technical field of intelligent medical instruments. In order to solve the problem that the existing device relies on the experience and feeling of medical staff, the monitoring effect is different for different people, the pressing force fluctuates easily due to fatigue or skill difference, and the position needs to be repeatedly adjusted, the application comprises an electronic stethoscope body assembly, one end of the electronic stethoscope body assembly is fixedly connected with a protective shell assembly, a piezoelectric sensor is slidably connected to the protective shell assembly, the piezoelectric sensor is coaxially arranged with the protective shell assembly, and a water bag type expansion assembly is connected to the protective shell assembly. The application realizes real-time monitoring of skin contact pressure through a flexible piezoresistive pressure distribution sensing array, and a controller automatically adjusts the local liquid inlet amount of the water bag type expansion assembly, thereby solving the problem of uneven manual pressing force, making the pressure distribution more uniform, reducing signal distortion, dynamically adjusting the liquid filling amount based on sensor data, realizing automatic compensation, and reducing manual intervention.

Description

Technical Field

[0001] This invention relates to the field of intelligent medical device technology, specifically to a bowel sound monitoring device. Background Technology

[0002] With the advancement of electronic technology in the late 20th century, electronic stethoscopes emerged to address the issues of insufficient sensitivity and signal attenuation in noisy environments for traditional devices. The core of these stethoscopes includes a high-sensitivity microphone sensor to capture physiological acoustic signals, a preamplifier to enhance weak signals, an analog-to-digital converter to digitize the signal, and digital signal processing algorithms to optimize sound quality. These technologies not only improved diagnostic accuracy but also laid the foundation for modern AI-assisted analysis and wireless transmission, driving the development of medical diagnosis towards intelligence and portability.

[0003] Existing equipment relies on the experience and feel of medical staff, and the monitoring effect varies from person to person. It is prone to fluctuations in pressure due to fatigue or skill differences, requiring repeated adjustments to the position.

[0004] To address the above issues, a bowel sound monitoring device is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a bowel sound monitoring device. By using this device, the problems of existing devices relying on the experience and feel of medical personnel, resulting in varying monitoring effects from person to person, fluctuations in pressure due to fatigue or skill differences, and the need for repeated position adjustments are solved.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A bowel sound monitoring device is provided, comprising an electronic stethoscope body assembly, a protective shell assembly fixedly connected to one end of the electronic stethoscope body assembly, a piezoelectric sensor slidably connected to the protective shell assembly, the piezoelectric sensor being coaxially arranged with the protective shell assembly, a water-filled bladder expansion assembly connected to the protective shell assembly, a liquid filling assembly fixedly connected to the protective shell assembly, the liquid filling assembly communicating with the water-filled bladder expansion assembly, a flexible piezoresistive pressure distribution sensor array fixedly connected to the bottom of the protective shell assembly, a suction cup assembly fixedly connected to the bottom of the protective shell assembly, the suction cup assembly being annular, and a transmission assembly disposed inside the protective shell assembly, the transmission assembly being drively connected to the piezoelectric sensor.

[0007] Furthermore, the electronic stethoscope body assembly includes an audio cable, one end of which is electrically connected to an earphone, the audio cable is fixedly connected to a protective shell assembly, and the other end of which is electrically connected to an output circuit.

[0008] Furthermore, the protective shell assembly includes a shell, the audio cable is fixedly connected to the shell, the other end of the audio cable extends into the shell, a protective cover is fixedly connected to the upper end of the shell, a flexible piezoresistive pressure distribution sensor array is fixedly connected to the lower end of the shell, a sliding hole is provided at the lower end of the shell, and the piezoelectric sensor is slidably connected in the sliding hole.

[0009] Furthermore, the water-filled expansion assembly includes several arc-shaped water bladders, which are arranged in a ring around the outside of the shell and are fixedly connected to the shell.

[0010] Furthermore, the liquid filling assembly includes an annular liquid storage tank, which is fixedly connected to the shell and positioned above the arc-shaped water bladder. A dust cover is fixedly connected to the annular liquid storage tank.

[0011] Furthermore, a plurality of solenoid valves are arranged in a ring inside the annular liquid storage tank. The plurality of solenoid valves are fixedly connected to the bottom of the annular liquid storage tank, and one end of the plurality of solenoid valves is connected to the plurality of arc-shaped water bladders through a flexible tube.

[0012] Furthermore, an annular pipe is fixedly connected inside the annular storage tank, and the annular pipe is connected to the other end of several solenoid valves. An infusion pump is fixedly connected inside the annular storage tank, and the output end of the infusion pump is connected to the annular pipe.

[0013] Furthermore, the suction cup assembly includes an annular suction cup, which is fixedly connected to the bottom of the housing. A connecting tube is fixedly connected to the bottom of the housing, and the connecting tube communicates with the inner cavity of the annular suction cup.

[0014] Furthermore, the transmission assembly includes an arc-shaped chamber, which is fixedly connected to a piezoelectric sensor. An air inlet is provided on the arc-shaped chamber and communicates with a connecting pipe. A connecting block is fixedly connected to the piezoelectric sensor. A rotating shaft is rotatably connected to the arc-shaped chamber and is coaxially arranged with the arc-shaped chamber. The rotating shaft is rotatably connected to the connecting block. A follower plate is fixedly connected to the rotating shaft and is in close contact with the inner wall of the arc-shaped chamber. A fixing plate is also provided in the arc-shaped chamber. The upper end of the fixing plate is in close contact with the outer wall of the rotating shaft, and the fixing plate is in close contact with the inner wall of the arc-shaped chamber.

[0015] Furthermore, two connecting plates are fixedly connected to the bottom of the housing. A straight groove and an arc-shaped groove are respectively opened on the two connecting plates. A slider is slidably connected in the straight groove and is rotatably connected to the rotating shaft. A spring is provided in the straight groove. The upper end of the spring is fixedly connected to the top of the straight groove and the lower end of the spring is fixedly connected to the slider. A sliding rod is slidably connected in the arc-shaped groove. One end of the sliding rod is rotatably connected to a connecting rod and the other end of the connecting rod is fixedly connected to the rotating shaft.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By using a flexible piezoresistive pressure distribution sensor array to monitor skin contact pressure in real time, the controller automatically adjusts the local liquid volume of the water bladder expansion component, which solves the problem of uneven pressure when manually pressing, making the pressure distribution more uniform and reducing signal distortion. Based on sensor data, the liquid volume is dynamically adjusted to achieve automatic compensation and reduce manual intervention.

[0017] 2. The piezoelectric sensor slides to drive the transmission component to move, passively generating negative pressure adsorption. The fixation time is short, freeing up medical staff's hands and improving emergency efficiency. At the same time, the negative pressure adsorption isolates environmental noise and enhances the signal-to-noise ratio.

[0018] 3. The buffering effect and uniform pressure distribution of the water-filled expansion component reduce local high pressure points, and the flexible design can adapt to patients of different body shapes, avoiding the positioning difficulties caused by traditional rigid components.

[0019] 4. Reduce the seam gaps of traditional sheet-shaped water bladders to form a continuous closed loop. Each arc-shaped water bladder is equipped with an independent solenoid valve to achieve targeted control of the filling flow rate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall three-dimensional structure of the protective shell assembly of the present invention; Figure 3 Cross-sectional view of the overall three-dimensional structure of the protective shell assembly of the present invention. Figure 1 ; Figure 4 Cross-sectional view of the overall three-dimensional structure of the protective shell assembly of the present invention. Figure 2 ; Figure 5 For the present invention Figure 4 Enlarged view of region A in the middle; Figure 6 This is a schematic diagram of the overall three-dimensional structure of the water bladder expansion component of the present invention. Figure 1 ; Figure 7 This is a schematic diagram of the overall three-dimensional structure of the water bladder expansion component of the present invention. Figure 2 ; Figure 8 This is a schematic diagram of the overall three-dimensional structure of the arc-shaped chamber of the present invention; Figure 9 This is a three-dimensional cross-sectional view of the arc-shaped chamber structure of the present invention; Figure 10 For the present invention Figure 9 Enlarged view of region B in the middle.

[0021] In the diagram: 1. Electronic stethoscope body assembly; 11. Audio cable; 12. Earphone; 2. Protective shell assembly; 21. Shell; 22. Protective cover; 23. Sliding hole; 3. Piezoelectric sensor; 4. Water bladder expansion assembly; 41. Arc-shaped water bladder; 5. Fluid filling assembly; 51. Annular reservoir; 52. Dust cover; 53. Solenoid valve; 54. Ring tube; 55. Infusion pump; 6. Flexible piezoresistive pressure distribution sensor array; 7. Suction cup assembly; 71. Annular suction cup; 72. Connecting tube; 8. Transmission assembly; 81. Arc-shaped chamber; 82. Air inlet; 83. Connecting block; 84. Rotating shaft; 85. Follower plate; 86. Fixing plate; 87. Connecting plate; 88. Straight groove; 881. Slider; 882. Spring; 89. Arc-shaped groove; 891. Slide rod; 892. Connecting rod. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] A bowel sound monitoring device, referring to Figure 1 As shown, it includes an electronic stethoscope body assembly 1, with a protective shell assembly 2 fixedly connected to one end of the electronic stethoscope body assembly 1, as shown in the figure. Figure 3 As shown, a piezoelectric sensor 3 is slidably connected to the protective shell assembly 2. When monitoring bowel sounds in patients, medical staff first need to find the optimal monitoring position, and then fix the protective shell assembly 2 in that position by pressing with their hands. At this time, the piezoelectric sensor 3 can capture the bowel sounds inside the patient's body and convert them into electrical signals. Then, the amplification circuit enhances the signal strength, and the digital filter performs noise reduction processing to remove environmental interference. Finally, the processed signal can be digitized and output to the earphone 12 or speaker in real time. All of the above technologies are existing technologies, and some of the structural diagrams are not shown.

[0024] Reference Figure 3 and Figure 4As shown, the piezoelectric sensor 3 is coaxially arranged with the protective shell assembly 2. A water-filled expansion assembly 4 is connected to the protective shell assembly 2. A liquid filling assembly 5 is fixedly connected to the protective shell assembly 2. The liquid filling assembly 5 is connected to the water-filled expansion assembly 4. A flexible piezoresistive pressure distribution sensor array 6 is fixedly connected to the bottom of the protective shell assembly 2. Medical personnel need to find the best monitoring position and then fix the protective shell assembly 2 in that position by pressing with their hands. During this process, if the medical personnel do not control the pressure of pressing with their hands accurately or the pressure is uneven, the pressure of the protective shell assembly 2 on the patient's skin will fluctuate or the pressure of the protective shell assembly 2 on the patient's skin will be uneven, which will affect the bowel sounds passing through the human skin. This will cause changes in the bowel sounds listened to by the medical personnel through the headphones 12 or speakers, resulting in a worse monitoring effect. By setting up a flexible piezoresistive pressure distribution sensor array 6, when the flexible piezoresistive pressure distribution sensor array 6 detects uneven pressure on the patient's skin by the protective shell assembly 2, it transmits the monitoring information to the controller. The controller is existing technology and is not shown in the figure. The controller controls the operation of the filling assembly 5 to fill the water-filled expansion assembly 4 with liquid, causing the water-filled expansion assembly 4 to expand and press against the patient's skin, thereby reducing the pressure of the protective shell assembly 2 on the patient's skin. At the same time, the monitoring information of the flexible piezoresistive pressure distribution sensor array 6 can be used to adjust the amount of liquid entering the water-filled expansion assembly 4 at certain locations, so that the amount of liquid in that location is different from the amount of liquid in other locations, thereby causing the pressure on the skin at that location to be different from the pressure on the skin at other locations. This difference is used to compensate for the problem of uneven pressure on the patient's skin caused by uneven force applied to the protective shell assembly 2 by medical personnel. This design uses a flexible piezoresistive pressure distribution sensor array 6 to monitor skin contact pressure in real time. Once unevenness is detected, the controller immediately activates the inflation component 5 to adjust the local fluid inlet volume of the water-filled balloon dilatation component 4. For example, if the flexible piezoresistive pressure distribution sensor array 6 detects insufficient pressure on the left side, the controller can increase the fluid volume in that area of ​​the water-filled balloon dilatation component 4, causing it to expand and compensate for the pressure difference. This results in a more uniform pressure distribution, reduced signal distortion, improved signal-to-noise ratio of bowel sound electrical signals, and more accurate monitoring results. Existing equipment relies on the experience and feel of medical personnel, which can easily lead to unstable pressure due to fatigue or skill differences, requiring repeated adjustments. This design automates the pressure compensation process; medical personnel only need to roughly position the device, and the system automatically fine-tunes the expansion of the water-filled balloon dilatation component 4 to balance the pressure. This reduces the reliance on professional training. Furthermore, the flexible design of the water-filled balloon dilatation component 4 allows it to adapt to different body shapes, avoiding the positioning difficulties caused by traditional rigid components. Uneven manual pressure can cause skin discomfort or even bruising. This design reduces local high pressure points through the buffering effect and uniform pressure distribution of the water-filled expansion component 4, making the skin feel gentler. The filling process of the water-filled expansion component 4 is controllable, avoiding excessive pressure. In addition, the water-filled expansion component 4 not only compensates for uneven pressure but also acts as a mechanical isolation, reducing the impact of external vibrations on the piezoelectric sensor 3. The controller dynamically adjusts the filling volume based on the data from the flexible piezoresistive pressure distribution sensor array 6, realizing closed-loop control and ensuring consistent stability under different body positions. This design reduces the number of manual interventions through automated compensation, making the monitoring process smoother. A suction cup assembly 7 is fixedly connected to the bottom of the protective shell assembly 2. The suction cup assembly 7 is ring-shaped. A transmission assembly 8 is set inside the protective shell assembly 2. The transmission assembly 8 is connected to the piezoelectric sensor 3. Since the piezoelectric sensor 3 is slidably connected to the protective shell assembly 2, when the medical staff presses the protective shell assembly 2, it is squeezed by the patient's skin, causing the piezoelectric sensor to slide into the protective shell assembly 2, thereby driving the transmission assembly 8 to move synchronously. During this process, the suction cup assembly 7 is always in close contact with the patient's skin surface, forming a closed cavity with the skin. At the same time, during this process, the movement of the transmission assembly 8 generates negative pressure, which causes the suction cup assembly 7 to adhere to the patient's skin surface, thereby achieving the fixation effect. When medical staff press the protective shell assembly 2 with one hand, the piezoelectric sensor 3 slides inward under the pressure of the patient's skin, driving the transmission assembly 8 to move. In the sealed cavity formed by the suction cup assembly 7 and the skin, negative pressure is passively generated, allowing the suction cup to stably adhere to the skin. This reduces the probability of equipment loosening caused by manual pressing, and the fixation time is short, freeing up medical staff's hands and improving emergency efficiency. At the same time, the negative pressure adsorption not only reduces pressure fluctuations caused by hand tremors, but also isolates environmental noise through the sealed cavity, significantly enhancing the signal-to-noise ratio of bowel sound signals and ensuring more accurate and reliable monitoring data.

[0025] Reference Figure 1 and Figure 3 As shown, the electronic stethoscope body assembly 1 includes an audio cable 11. One end of the audio cable 11 is electrically connected to the earphone 12. The audio cable 11 is fixedly connected to the protective shell assembly 2. The other end of the audio cable 11 is electrically connected to the output circuit. The output circuit is existing technology and is not shown in the figure. In the above process, after the filter performs noise reduction processing on the signal, it is transmitted to the earphone 12 through the output circuit, so that medical personnel can receive the signal and make a reasonable judgment on the patient's physical condition.

[0026] Reference Figures 1-3As shown, the protective shell assembly 2 includes a shell 21, an audio cable 11 fixedly connected to the shell 21, the other end of the audio cable 11 extending into the shell 21, a protective cover 22 fixedly connected to the upper end of the shell 21, and a flexible piezoresistive pressure distribution sensor array 6 fixedly connected to the lower end of the shell 21. By setting the flexible piezoresistive pressure distribution sensor array 6, the pressure on the skin at different positions on the bottom of the shell 21 is monitored, and the monitoring information is transmitted to the controller. A sliding hole 23 is opened at the lower end of the shell 21, and a piezoelectric sensor 3 is slidably connected in the sliding hole 23. When medical personnel monitor bowel sounds in patients, they press the shell 21 so that the lower end of the shell 21 is close to the patient's skin. During this process, the piezoelectric sensor 3 is subjected to the squeezing force of the skin, causing it to slide in the sliding hole 23 with the sliding direction pointing into the shell 21. Bowel sounds are monitored and collected through the piezoelectric sensor 3. The flexible piezoresistive pressure distribution sensor array 6 monitors the pressure distribution in each area at the bottom of the housing 21 in real time. The controller dynamically adjusts the local filling volume of the water bladder expansion component to ensure uniform skin contact pressure. The free displacement of the piezoelectric sensor 3 in the sliding hole 23 can automatically match the skin undulations caused by the patient's body movement or breathing. When the housing 21 is compressed, the sensor slides inward under the reverse thrust of the skin, which maintains acoustic coupling stability and reduces signal attenuation caused by hard compression.

[0027] Reference Figure 6 and Figure 7 As shown, the water-filled expansion assembly 4 includes several arc-shaped water bladders 41, which are arranged in a ring around the outside of the housing 21. After liquid enters the arc-shaped water bladders 41, the arc-shaped water bladders 41 expand, increasing their volume. This expansion causes adjacent arc-shaped water bladders 41 to generate a squeezing force, thereby reducing the gap between two adjacent arc-shaped water bladders 41. The several arc-shaped water bladders 41 are fixedly connected to the housing 21. After expansion, the arc-shaped water bladders 41 can fit tightly against the outer surface of the housing 21. The ring-shaped water bladders 41 squeeze each other after being filled and expanded, which can reduce the seam gap of traditional sheet-like water bladders and form a continuous closed ring. This further improves the pressure uniformity between the housing 21 and the skin contact surface, thereby reducing the probability of bowel sound signal attenuation caused by uneven pressure.

[0028] Reference Figure 2 , Figure 6 and Figure 7 As shown, the liquid filling assembly 5 includes an annular liquid storage tank 51, in which liquid is stored. The annular liquid storage tank 51 is fixedly connected to the shell 21. The annular liquid storage tank 51 is positioned above the arc-shaped water bladder 41. A dust cover 52 is fixedly connected to the annular liquid storage tank 51.

[0029] Reference Figure 6 and Figure 7As shown, a number of solenoid valves 53 are arranged in a ring inside the annular liquid storage tank 51. The solenoid valves 53 are all fixedly connected to the bottom of the annular liquid storage tank 51. One end of each of the solenoid valves 53 is connected to a number of arc-shaped water bags 41 through a hose. This arrangement allows the liquid to enter the arc-shaped water bag 41 after passing through one end of the solenoid valve 53, causing the arc-shaped water bag 41 to expand.

[0030] An annular pipe 54 is fixedly connected inside the annular storage tank 51. The annular pipe 54 is connected to the other end of several solenoid valves 53. After the liquid enters the annular pipe 54, it enters the solenoid valve 53 from the other end of the solenoid valve 53, and then flows out from one end of the solenoid valve 53 into the arc-shaped water bladder 41, causing the arc-shaped water bladder 41 to expand. An infusion pump 55 is fixedly connected inside the annular storage tank 51. The output end of the infusion pump 55 is connected to the annular pipe 54. When the flexible piezoresistive pressure distribution sensor array 6 detects that the pressure in a certain area at the bottom of the housing 21 is relatively too high or too low, it transmits the monitoring information to the controller. The controller starts the infusion pump 55. Then, the liquid enters the infusion pump 55 from the input end and flows out from the output end of the infusion pump 55, and then enters the annular tube 54. At the same time as the infusion pump 55 starts, the controller controls the solenoid valve 53 to adjust the opening, thereby increasing or decreasing the liquid flow through the solenoid valve 53 in that area. This increases or decreases the liquid entering the arc-shaped water bladder 41 per unit time, so as to balance the amount of liquid in each area of ​​the arc-shaped water bladder 41, thereby achieving the purpose of balancing the pressure of each part of the bottom of the shell 21 on the patient's skin. Each arc-shaped water bladder 41 is equipped with an independent solenoid valve 53. Based on the real-time pressure data of the flexible piezoresistive pressure distribution sensor array 6, the opening of the solenoid valve 53 is dynamically adjusted to target and control the filling flow rate, reducing the probability of abdominal pressure imbalance in obese patients, thereby making the monitoring results of bowel sounds more accurate.

[0031] Reference Figure 5 and Figures 7-10 As shown, the suction cup assembly 7 includes an annular suction cup 71. When the medical staff presses the housing 21, the annular suction cup 71 is pressed tightly against the patient's skin, so that the inner cavity of the annular suction cup 71 and the patient's skin form a cavity. The annular suction cup 71 is fixedly connected to the bottom of the housing 21, and a connecting tube 72 is fixedly connected to the bottom of the housing 21. The connecting tube 72 communicates with the inner cavity of the annular suction cup 71, so the cavity is connected to the connecting tube 72.

[0032] The transmission assembly 8 includes an arc-shaped chamber 81, which is fixedly connected to the piezoelectric sensor 3. This arrangement allows the piezoelectric sensor 3 to move upward when it is subjected to the pressure of the patient's skin, while simultaneously driving the arc-shaped chamber 81 to move upward synchronously. An air inlet 82 is provided on the arc-shaped chamber 81, which is connected to the connecting pipe 72. This arrangement allows the cavity formed by the inner cavity of the annular suction cup 71 and the patient's skin to be connected to the air inlet 82. A connecting block 83 is fixedly connected to the piezoelectric sensor 3, and a rotating shaft 84 is rotatably connected to the arc-shaped chamber 81. The rotating shaft 84 is coaxially arranged with the arc-shaped chamber 81 and rotatably connected to the connecting block 83. A follower plate 85 is fixedly connected to the rotating shaft 84 and is in close contact with the inner wall of the arc-shaped chamber 81. When the piezoelectric sensor 3 is not subjected to pressure from the patient's skin, i.e., in the initial state, the follower plate 85 is located to the lower left of the air inlet 82. A fixing plate 86 is also provided inside the arc-shaped chamber 81. The upper end of the fixing plate 86 is in close contact with the outer wall of the rotating shaft 84, and the fixing plate 86 is in close contact with the inner wall of the arc-shaped chamber 81. This arrangement allows the cavity formed by the inner cavity of the annular suction cup 71 and the patient's skin to communicate with the cavity formed by the fixing plate 86, the follower plate 85, and the arc-shaped chamber 81, i.e., the two cavities are connected.

[0033] Two connecting plates 87 are fixedly connected to the bottom of the housing 21. The two connecting plates 87 are respectively provided with a straight groove 88 and an arc groove 89. A slider 881 is slidably connected in the straight groove 88. The slider 881 is rotatably connected to the rotating shaft 84. A spring 882 is provided in the straight groove 88. The upper end of the spring 882 is fixedly connected to the top of the straight groove 88, and the lower end of the spring 882 is fixedly connected to the slider 881. A sliding rod 891 is slidably connected in the arc groove 89. The sliding rod 891 is rotatably connected to one end of the connecting rod 892, and the other end of the connecting rod 892 is fixedly connected to the rotating shaft 84. When the piezoelectric element slides upward, it drives the arc-shaped chamber 81, the fixed plate 86, the rotating shaft 84, and the follower plate 85, which are fixedly connected to it, to move upward synchronously. At the same time, the slider 881 slides upward in the straight groove 88, the spring 882 is compressed, and the slide rod 891 slides in the arc-shaped groove 89. During this process, the connecting rod 892 deflects downward, which in turn drives the rotating shaft 84 to rotate counterclockwise, which in turn drives the follower plate 85 to rotate counterclockwise. This causes the cavity composed of the follower plate 85, the fixed plate 86, and the arc-shaped chamber 81 to increase in size and the air pressure to decrease. Since this cavity is connected to the cavity formed by the inner cavity of the annular suction cup 71 and the patient's skin, the air pressure in the two cavities decreases. Under the action of negative pressure, the annular suction cup 71 is attached to the patient's skin, thus achieving fixation. After the patient's bowel sounds are monitored, the medical staff releases their hands. At this time, under the action of spring 882, slider 881 moves downward, and slide rod 891 slides downward in arc groove 89, which causes rotating shaft 84 to rotate clockwise. This reduces the size of the cavity composed of follower plate 85, fixed plate 86 and arc chamber 81, which in turn increases the air pressure in the two cavities. When the air pressure is close to the external air pressure, the fixing effect of annular suction cup 71 is released. When the housing 21 is pressed, the piezoelectric sensor 3 slides upward, causing the arc-shaped chamber 81 to shift. The linear motion is converted into the counterclockwise rotation of the rotating shaft 84 through the composite guide rail of the straight groove 88 and the arc-shaped groove 89, which drives the follower plate 85 to rotate and expand the volume of the sealed cavity, passively generating negative pressure. The adsorption and fixation time is short, freeing up the hands of medical staff and with zero power consumption. The silicone material of the annular suction cup 71 evenly disperses the adsorption force. The negative pressure adsorption makes the skin flat and adhere to the piezoelectric sensor 3, reducing the penetration loss of bowel sounds. At the same time, the annular suction cup 71 blocks external vibration, thereby improving the signal-to-noise ratio.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bowel sound monitoring device, characterized in that: The device includes an electronic stethoscope body assembly (1), one end of which is fixedly connected to a protective shell assembly (2). A piezoelectric sensor (3) is slidably connected to the protective shell assembly (2). The piezoelectric sensor (3) is coaxially arranged with the protective shell assembly (2). A water-filled expansion assembly (4) is connected to the protective shell assembly (2). A liquid filling assembly (5) is fixedly connected to the protective shell assembly (2). The liquid filling assembly (5) is connected to the water-filled expansion assembly (4). A flexible piezoresistive pressure distribution sensor array (6) is fixedly connected to the bottom of the protective shell assembly (2). A suction cup assembly (7) is fixedly connected to the bottom of the protective shell assembly (2). The suction cup assembly (7) is annular. A transmission assembly (8) is provided inside the protective shell assembly (2). The transmission assembly (8) is connected to the piezoelectric sensor (3) in a transmission connection.

2. The bowel sound monitoring device according to claim 1, characterized in that: The electronic stethoscope body assembly (1) includes an audio cable (11), one end of which is electrically connected to an earphone (12), the audio cable (11) is fixedly connected to a protective shell assembly (2), and the other end of which is electrically connected to an output circuit.

3. The bowel sound monitoring device according to claim 2, characterized in that: The protective shell assembly (2) includes a shell (21), the audio line (11) is fixedly connected to the shell (21), the other end of the audio line (11) extends into the shell (21), the upper end of the shell (21) is fixedly connected to a protective cover (22), the lower end of the shell (21) is fixedly connected to a flexible piezoresistive pressure distribution sensor array (6), the lower end of the shell (21) is provided with a sliding hole (23), and the piezoelectric sensor (3) is slidably connected in the sliding hole (23).

4. The bowel sound monitoring device according to claim 3, characterized in that: The water bladder expansion assembly (4) includes several arc-shaped water bladders (41), which are arranged in a ring around the outer side of the housing (21) and are fixedly connected to the housing (21).

5. The bowel sound monitoring device according to claim 4, characterized in that: The liquid filling assembly (5) includes an annular liquid storage tank (51), which is fixedly connected to the shell (21). The annular liquid storage tank (51) is located above the arc-shaped water bag (41), and a dust cover (52) is fixedly connected to the annular liquid storage tank (51).

6. The bowel sound monitoring device according to claim 5, characterized in that: The annular liquid storage tank (51) is provided with a number of solenoid valves (53) arranged in a ring. The number of solenoid valves (53) are fixedly connected to the bottom of the annular liquid storage tank (51). One end of the number of solenoid valves (53) is connected to the number of arc-shaped water bags (41) through a hose.

7. The bowel sound monitoring device according to claim 6, characterized in that: The annular storage tank (51) is also fixedly connected to an annular pipe (54), which is connected to the other end of several solenoid valves (53). The annular storage tank (51) is fixedly connected to an infusion pump (55), and the output end of the infusion pump (55) is connected to the annular pipe (54).

8. The bowel sound monitoring device according to claim 3, characterized in that: The suction cup assembly (7) includes an annular suction cup (71), which is fixedly connected to the bottom of the housing (21). A connecting tube (72) is fixedly connected to the bottom of the housing (21), and the connecting tube (72) communicates with the inner cavity of the annular suction cup (71).

9. The bowel sound monitoring device according to claim 8, characterized in that: The transmission assembly (8) includes an arc-shaped chamber (81), which is fixedly connected to a piezoelectric sensor (3). An air inlet (82) is provided on the arc-shaped chamber (81), and the air inlet (82) is connected to a connecting pipe (72). A connecting block (83) is fixedly connected to the piezoelectric sensor (3). A rotating shaft (84) is rotatably connected to the arc-shaped chamber (81). The rotating shaft (84) is coaxially arranged with the arc-shaped chamber (81). The rotating shaft (84) is rotatably connected to the connecting block (83). A follower plate (85) is fixedly connected to the rotating shaft (84). The follower plate (85) is in close contact with the inner wall of the arc-shaped chamber (81). A fixing plate (86) is also provided in the arc-shaped chamber (81). The upper end of the fixing plate (86) is in close contact with the outer wall of the rotating shaft (84), and the fixing plate (86) is in close contact with the inner wall of the arc-shaped chamber (81).

10. The bowel sound monitoring device according to claim 9, characterized in that: The bottom of the housing (21) is fixedly connected to two connecting plates (87). The two connecting plates (87) are respectively provided with a straight groove (88) and an arc groove (89). A slider (881) is slidably connected in the straight groove (88). The slider (881) is rotatably connected to the rotating shaft (84). A spring (882) is provided in the straight groove (88). The upper end of the spring (882) is fixedly connected to the top of the straight groove (88), and the lower end of the spring (882) is fixedly connected to the slider (881). A sliding rod (891) is slidably connected in the arc groove (89). The sliding rod (891) is rotatably connected to one end of the connecting rod (892), and the other end of the connecting rod (892) is fixedly connected to the rotating shaft (84).

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