Wearable fetal heart rate monitoring device and its usage method

Abstract

The present invention belongs to the technical field of medical monitoring, and discloses a wearable fetal heart monitoring device and its usage method. The wearable fetal heart monitoring device includes two strap assemblies. A connecting rod is connected between the two strap assemblies. A connecting band and a lumbar support assembly are connected to each of the two strap assemblies, and the connecting band and the lumbar support assembly are opposite to each other in position on the strap assemblies. A protection assembly is connected to the lumbar support assembly. Through the mutual cooperation between the provided lumbar support assembly and the protection assembly, the waist position of the user is supported. The back area of the user is supported by a protection rod, and the waist area of the user is supported by a lumbar support, reducing the waist pressure of the user and improving the comfort of the monitoring device during use. Moreover, by adjusting the position height of the protection rod, the protection assembly can be made to support users with different body postures.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical monitoring, and in particular relates to a wearable fetal heart monitoring device and a method for using the same. Background Art

[0002] With the development of society and the advancement of medical technology, people pay more attention to the protection and care of pregnant women. Among the existing fetal heart monitoring devices, some test results are greatly affected by the changes in fetal position, placental position and fetal heart position, and some have potential safety issues for the mother and fetus, requiring professionals to use professional methods to perform tests. Therefore, the existing fetal heart monitoring is carried out regularly in the hospital, and pregnant women need to register, make an appointment and queue up every time they go to the hospital, which brings great inconvenience to the lives of pregnant women.

[0003] The patent with application number CN201510275806.6 discloses a wearable fetal monitor, including a shell, a shell, and a shell connected to each other; the shell and the shell can be fixed to the abdomen of a pregnant woman by a strap, and the shell can be worn on the strap; the shell is provided with an ultrasonic transceiver module, an ultrasonic demodulation module, a fetal heart signal processing module, and a uterine pressure processing module, an ultrasonic transducer is provided in the shell, and a pressure sensor is provided in the shell. The shell is also provided with safety protection modules such as a temperature monitoring module, a timing module, and a self-test module. The wearable fetal monitor provided by the above scheme, the fetal monitor host (shell) can be worn on the parturient or held in the hand, and the pregnant woman can perform fetal monitoring while standing or walking, and the fetal monitoring is more free; and the host is also provided with uterine pressure monitoring and safety protection modules, which are safer and more reliable to use. Although the above scheme realizes fetal heart monitoring of the fetus, it does not optimize the monitoring status of the pregnant woman during use, resulting in the pregnant woman being very likely to feel physical discomfort during the detection process.

[0004] During the monitoring process, the influence of the pregnant woman's body posture will cause the pressure on the pregnant woman's waist to increase, causing discomfort in the waist when the pregnant woman walks, sits or lies down. In severe cases, it may even cause damage to the pregnant woman's lumbar spine, thereby increasing the error in the monitoring process due to the pregnant woman's poor condition.

[0005] Therefore, in order to solve the above technical problems, the present invention proposes a wearable fetal heart monitoring device and a method for using the same. Summary of the invention

[0006] The purpose of the present invention is to solve the above problems. The present invention provides a wearable fetal heart monitoring device and a method of using the same, which has the advantages of being portable and reducing the pressure on the waist of pregnant women during the detection process.

[0007] To achieve the above object, the present invention provides the following technical solution: A wearable fetal heart rate monitoring device, comprising two strap assemblies, a connecting rod is connected between the two strap assemblies, a connecting band and a lumbar protection assembly are connected to both of the two strap assemblies, and the connecting band and the lumbar protection assembly are opposite to each other in position on the strap assembly, and a protection assembly is connected to the lumbar protection assembly;

[0008] Constraint assemblies are movably provided on both of the two connecting bands, and a detection probe and a fetal heart probe are respectively connected to one ends of the two constraint assemblies close to the lumbar protection assembly;

[0009] The protection assembly includes a protective shell, a lumbar support is connected to the protective shell, and protective rods are respectively movably provided at both ends of the protective shell distributed along the length direction.

[0010] Preferably, the strap assembly includes an elastic band, the connecting band and the lumbar protection assembly are both connected to the elastic band, and a locking portion is connected to the elastic band.

[0011] Preferably, the detection probe includes a housing, one end of the housing is connected to the constraint assembly, and a detection assembly is connected to the housing.

[0012] Preferably, the detection assembly includes a movable disk, a trigger rod is connected to one end of the movable disk close to the housing, the other end of the trigger rod away from the movable disk is connected to the housing, and a return spring is sleeved on the outer circumference of the trigger rod.

[0013] Preferably, the constraint assembly includes a connecting shell, a connecting cavity is penetrated through the connecting shell, the connecting band penetrates through the connecting cavity, moving wheels are connected to both side cavity walls of the connecting cavity, and the moving wheels can deflect at an angle on the connecting cavity.

[0014] Preferably, a working cavity for storing electronic components is opened on the housing, a ventilation cavity is opened on the connecting shell, and the ventilation cavity is communicated with the working cavity.

[0015] Preferably, two telescopic rods are connected inside the protective shell, and one ends of the two telescopic rods away from each other are respectively connected to the protective rods.

[0016] Preferably, the lumbar support is composed of an elastic plate assembly, and both ends of the lumbar support distributed along the length direction are respectively connected to the movable parts of the telescopic rods.

[0017] Preferably, a sliding cavity is opened on the connecting band, and the detection probe is slidably connected in the sliding cavity.

[0018] A usage method completed by using the wearable fetal heart rate monitoring device includes the following steps:

[0019] S1. Unfold the locking part to prompt the user to pass through the opening position of the locking part and contact the elastic band.

[0020] S2. Respectively adjust the positions of the detection probe and the fetal heart probe to move them so that they correspond to the detection position of the user.

[0021] S3. Drive the position of the protection rod through the telescopic rod to make the protection rod contact the back of the user, and prompt the lumbar support to contact the waist of the user.

[0022] S4. Use the detection probe and the fetal heart probe to detect the state of the user. The vibration of the user's skin drives the movable disk to vibrate, driving the trigger rod to vibrate to complete the monitoring of the fetal heart.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. Through the mutual cooperation between the lumbar protection component and the protection component, the waist position of the user is supported. The back area of the user is supported by the protection rod, and the waist area of the user is supported by the lumbar support, reducing the waist pressure of the user, improving the comfort of the monitoring device during use, and adjusting the position height of the protection rod can prompt the protection component to support and use people with different body postures.

[0025] 2. Through the mutual cooperation between the restraint component and the connecting belt, the resistance of the detection probe and the fetal heart probe moving on the connecting belt can be reduced, improving the adjustment rate of their positions on the connecting belt. At the same time, after the detection probe and the fetal heart probe move to the target position, the restraint component can lock their positions to prevent the detection probe and the fetal heart probe from shifting and affecting the monitoring accuracy.

[0026] 3. The connecting rod is used to connect the belt component. At the same time, after the belt component is connected to the user, the connecting rod can protect and restrain the side body of the user, reducing the offset of the abdomen position and affecting the monitoring positions of the detection probe and the fetal heart probe.

[0027] 4. By opening a sliding cavity on the connecting belt, the detection probe and the fetal heart probe are hidden in the sliding cavity. In this way, while realizing the position movement of the detection probe and the fetal heart probe, the pressure of the detection probe and the fetal heart probe body on the abdomen of the user can be effectively reduced, improving the comfort of the monitoring device during use. Description of the Drawings

[0028] Figure 1 It is a three-dimensional structural schematic diagram of the overall device in the first embodiment of the present invention;

[0029] Figure 2Schematic diagram of the three-dimensional structure of the overall device in another direction in the first embodiment of the present invention;

[0030] Figure 3 Schematic diagram of the connection structure between the restraint component and the detection probe in the first embodiment of the present invention;

[0031] Figure 4 Schematic diagram of the cross-sectional structure between the restraint component and the detection probe in the first embodiment of the present invention;

[0032] Figure 5 Schematic diagram of the three-dimensional structure of the protection component in the first embodiment of the present invention;

[0033] Figure 6 Schematic diagram of the cross-sectional structure of the protection component in the first embodiment of the present invention;

[0034] Figure 7 Schematic diagram of the three-dimensional structure of the connecting belt in the second embodiment of the present invention.

[0035] Description of the drawings: 1. Belt component; 101. Elastic belt; 102. Locking part; 2. Connecting belt; 201. Sliding cavity; 3. Restraint component; 301. Connecting shell; 3011. Ventilation cavity; 302. Connecting cavity; 303. Moving wheel; 4. Lumbar protection component; 5. Detection probe; 501. Shell; 5011. Working cavity; 502. Detection component; 5021. Movable disc; 5022. Trigger rod; 5023. Return spring; 6. Fetal heart probe; 7. Protection component; 701. Protection shell; 702. Lumbar support; 703. Protection rod; 704. Telescopic rod; 8. Connecting rod. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Embodiment 1

[0038] As Figures 1 - 7As shown in the figure, a wearable fetal heart rate monitoring device includes two strap assemblies 1 for connecting with pregnant women, and the strap assemblies 1 are used to fix the positions of the detection probe 5 and the fetal heart probe 6 to ensure the normal monitoring of pregnant women. Among them, a plurality of connecting rods 8 are connected between the two strap assemblies 1. The two strap assemblies 1 are connected by the connecting rods 8, which is convenient for the use and storage process of the strap assemblies 1. Moreover, none of the plurality of connecting rods 8 are connected to the connecting belt 2 and the lumbar support assembly 4. That is, during use, the connecting rods 8 are located at the side of the user. While ensuring that the distance between the strap assemblies 1 meets the monitoring requirements, it can also support and restrain the user's belly, reduce the probability of the belly position shifting, and ensure the stability of the detection data of the detection probe 5 and the fetal heart probe 6. Connecting belts 2 and lumbar support assemblies 4 are connected to both strap assemblies 1, and the connecting belts 2 and the lumbar support assemblies 4 are opposite to each other in position on the strap assemblies 1. The widths of the connecting belts 2 and the lumbar support assemblies 4 are wider than the width of the strap assemblies 1, so as to reduce the pressure when the connecting belts 2 and the lumbar support assemblies 4 contact the user and improve the comfort of the user. A protection assembly 7 for supporting the user's waist position is connected to the lumbar support assembly 4.

[0039] In order to facilitate the movement of the detection probe 5 and the fetal heart probe 6 on the connecting belt 2, and at the same time be able to fix the positions of the detection probe 5 and the fetal heart probe 6, restraint assemblies 3 are movably provided on both connecting belts 2. Detection probes 5 and fetal heart probes 6 are respectively connected to one ends of the two restraint assemblies 3 close to the lumbar support assembly 4. By moving the positions of the restraint assemblies 3, the positions of the detection probe 5 and the fetal heart probe 6 can be moved.

[0040] During use, according to the user's needs, the positions of the detection probe 5 and the fetal heart probe 6 are adjusted on the connecting belt 2, and the strap assemblies 1 are connected to the user. After connection, the protection assembly 7 can support the user's back, and the connecting rods 8 can fix and restrain the user's side, ensuring the normal operation of the detection probe 5 and the fetal heart probe 6.

[0041] It should be noted that when monitoring the fetal heart of a pregnant woman, in order to improve the convenience during monitoring, in the present invention, both the detection probe 5 and the fetal heart probe 6 use a wireless connection form to transmit detection data, and can remotely receive and display the detection information with a mobile electronic device.

[0042] In order to reduce the discomfort in the waist caused by long-term sitting during use by pregnant women, the protection component 7 includes a protective shell 701 for connection and fixation. One end of the protective shell 701 is connected to the lumbar support component 4. A lumbar support 702 is connected to the protective shell 701. The lumbar support 702 is located between the two strap components 1 and can directly contact the waist of the user. At both ends of the protective shell 701 distributed along the length direction, protective rods 703 are movably provided respectively. The distance between the protective rods 703 and the protective shell 701 can be adjusted. By using the protective rods 703 to contact and support the back of the user, the waist pressure of the user is reduced, ensuring that the user's waist does not feel fatigued or uncomfortable when monitoring the fetal heart.

[0043] Furthermore, in order to improve the wearing convenience of the monitoring device during use, the strap component 1 includes an elastic band 101. By setting the elastic band 101, the diameter of the strap component 1 can be adjusted to adapt to pregnant women of different body shapes for use. The connecting band 2 and the lumbar support component 4 are both connected to the elastic band 101. And a locking part 102 is connected to the elastic band 101. When the locking part 102 is in the open state, the inner ring of the elastic band 101 is in an open state, thus facilitating the user to wear. After the user wears it, it is fixed through the locking part 102, so that the elastic band 101 contacts and fixes with the skin of the user.

[0044] In the present invention, the locking part 102 includes, but is not limited to, adhesive buttons, buttons and other connecting buttons for connection.

[0045] Furthermore, the detection probe 5 and the fetal heart probe 6 have the same structure. Therefore, in the present invention, for the convenience of description, only the structure of the detection probe 5 will be explained. The detection probe 5 includes a housing 501. One end of the housing 501 is connected to the restraint component 3. A detection component 502 is connected to the housing 501. Through the detection component 502, the contraction state of the user is identified, and at the same time, the state of the pregnant woman's fetal heart is identified, and the detection data is uploaded.

[0046] Furthermore, the detection component 502 includes a movable disk 5021. The movable disk 5021 contacts the skin of the user. During the detection process, by detecting the beating frequency of the pregnant woman's belly, the movable disk 5021 can be driven to vibrate. A trigger rod 5022 is connected to one end of the movable disk 5021 close to the housing 501. The end of the trigger rod 5022 away from the movable disk 5021 is connected to the housing 501. And a return spring 5023 is sleeved on the outer circumference of the trigger rod 5022. During use, the vibration of the movable disk 5021 can drive the trigger rod 5022 to move, and the moving frequency of the trigger rod 5022 is collected and uploaded. And during the vibration of the movable disk 5021, the position of the movable disk 5021 is reset by using the return spring 5023 to ensure that the movable disk 5021 always contacts the skin of the user.

[0047] When necessary, in order to facilitate the user to use it comfortably and safely in any season, a temperature control component is processed on the housing 501 and the movable plate 5021 to regulate the temperature on the side in contact with the human body according to the user's usage requirements, ensuring that the user can use it normally.

[0048] Furthermore, in order to facilitate the adjustment and fixation of the positions of the detection probe 5 and the fetal heart probe 6, the constraint component 3 includes a connection shell 301. The shape of the connection shell 301 is in the shape of a Chinese character "hui". A connection cavity 302 is penetrated through the connection shell 301, and the connection belt 2 penetrates through the connection cavity 302. Then, when it is necessary to move the positions of the detection probe 5 and the fetal heart probe 6, the connection shell 301 is controlled to move on the connection belt 2. Moving wheels 303 are connected to both side cavity walls of the connection cavity 302. During the movement of the connection shell 301, the moving wheels 303 will contact and rotate on the surface of the connection belt 2, thereby realizing the rapid movement of the detection probe 5 and the fetal heart probe 6 on the connection belt 2. The moving wheels 303 can deflect at an angle on the connection cavity 302. When the constraint component 3 moves to the target position, at this time, the angle of the moving wheels 303 is controlled to deflect, prompting the angle between the moving wheels 303 and the connection belt 2 to deflect, and at the same time, controlling the hub of the moving wheels 303 to contact the connection belt 2 to lock the moving wheels 303, ensuring the positions of the detection probe 5 and the fetal heart probe 6 are fixed.

[0049] Furthermore, a working cavity 5011 for storing electronic components is opened on the housing 501. A ventilation cavity 3011 is opened on the connection shell 301. The ventilation cavity 3011 is communicated with the working cavity 5011. One end of the ventilation cavity 3011 far from the working cavity 5011 penetrates through the connection shell 301 and communicates with the outside. During the operation of the electronic components, a lot of heat will be generated. At this time, the ventilation cavity 3011 is used to transfer the heat in the working cavity 5011, ensuring the temperature stability of the detection probe 5 and the fetal heart probe 6, without interfering with the user, and when dissipating heat through the ventilation cavity 3011, the hot air dissipated will not affect the user, improving the comfort of using the monitoring device.

[0050] And in order to ensure the safety during use, a temperature sensor is added to the working cavity 5011 to identify the temperature in the working cavity 5011. When the temperature in the working cavity 5011 is still high under the heat dissipation of the ventilation cavity 3011, at this time, a warning is given through the data receiving end to prompt the user to pay attention to the usage status of the device.

[0051] Furthermore, two telescopic rods 704 are connected inside the protective shell 701, and the ends of the two telescopic rods 704 that are away from each other are respectively connected to the protective rod 703. The position height of the protective rod 703 is adjusted by the telescopic rods 704 to suit users of different body shapes. In the present invention, the telescopic rods 704 are preferably electric telescopic rods, which are convenient for quickly adjusting the position of the protective rod 703 according to usage requirements and reducing the debugging time before use.

[0052] Furthermore, the lumbar support 702 is composed of an elastic plate assembly, and the two ends of the lumbar support 702 distributed along the length direction are respectively connected to the movable parts of the telescopic rod 704, thereby improving the user's comfort. When the telescopic rod 704 is used to adjust the position of the protection rod 703, the raised height of the lumbar support 702 can also be adjusted, ensuring that the lumbar support 702 can be used by people of different body shapes.

[0053] When in use, first open the locking part 102 and make the elastic band 101 contact with the human skin, but do not fix the position of the locking part 102 at this time, so that the protection component 7 corresponds to the waist position of the user, and then adjust the restraint component 3 to drive the detection probe 5 and the fetal heart probe 6 to be located at the position for mutual detection. At this time, adjust the locking part 102 to lock, so that the elastic band 101 is fixed against the user, and the connecting rod 8 is distributed on both sides of the waist.

[0054] When the locking part 102 is fixed, the position of the restraint component 3 is fine-tuned according to the fixed position to ensure that the positions of the detection probe 5 and the fetal heart probe 6 correspond to the positions of the user. At the same time, the length of the telescopic rod 704 is adjusted according to the user's body shape to drive the protection rod 703 to contact the user's back and the waist support 702 to contact the user's waist area, thereby reducing the pressure on the user's waist during use.

[0055] The detection probe 5 and the fetal heart probe 6 are then controlled to monitor the user's status. Since the detection probe 5 and the fetal heart probe 6 have the same structural principles, only the action function of the detection probe 5 is described here. The movable disk 5021 is driven to vibrate by the vibration of the human skin, thereby driving the trigger rod 5022 to move back and forth, thereby completing the monitoring of the fetal heart. In addition, the detection method of the dual probes of the detection probe 5 and the fetal heart probe 6 can avoid the interference of the user's body status on the fetal heart detection.

[0056] Embodiment 2

[0057] Based on the above-mentioned First Embodiment, although the cooperation between the detection probe 5 and the fetal heart probe 6 is used to complete the monitoring of the target fetal heart, at the same time, since the positions of the detection probe 5 and the fetal heart probe 6 are on the surface of the connecting belt 2, it may excessively squeeze the abdomen of the user during use, causing discomfort to the user. Therefore, to solve the above technical problems, the present invention proposes the Second Embodiment.

[0058] During use, the thickness of the connecting belt 2 is increased, and a sliding cavity 201 is opened on the connecting belt 2. The detection probe 5 and the fetal heart probe 6 are slidably connected in the sliding cavity 201, and only the movable disk 5021 protrudes from the connecting belt 2. During the installation and use process, the pressure of the detection probe 5 and the fetal heart probe 6 on the user's abdomen is reduced, improving the comfort of using the monitoring device.

[0059] At the same time, the lumbar support assembly 4 penetrates through the protection assembly 7, and the protection assembly 7 is used to adjust the length of the strap assembly 1. That is, during the use of the fetal heart monitoring device, part of the lumbar support assembly 4 is received in the protective shell 701, and the tightness of the strap assembly 1 is adjusted according to the posture of the user to ensure the comfort of the user during use.

[0060] Specifically, according to the change in the resistance pressure of the user against the lumbar support 702 and the protective rod 703, the user's posture is identified, and then the length of the lumbar support assembly 4 in the protection assembly 7 is controlled to be adjusted, so as to adjust the length (i.e., tightness) of the strap assembly 1.

[0061] When the lumbar support 702 and the protective rod 703 are both stressed, it means that the user is in a sitting position at this time, and the diameter of the abdomen at this time is larger than that in the standing state. Therefore, the protection assembly 7 is used to control the length of the lumbar support assembly 4 to elongate, reducing the pressure of the strap assembly 1 on the user's abdomen. While ensuring that the detection probe 5 and the fetal heart probe 6 are in a normal working state, the comfort of using the monitoring device is improved.

[0062] When only the lumbar support 702 is stressed and the stress is less than the pressure in the sitting position, it means that the user is in a standing state at this time, and the diameter of the abdomen is smaller. The protection assembly 7 can be controlled to contract the length of the lumbar support assembly 4 to ensure that the strap assembly 1 does not disengage from the user, and at the same time maintain the stable positions of the detection probe 5 and the fetal heart probe 6, so as to ensure that the fetal heart monitoring device can actively adjust its connection state according to the user's usage state, improve the comfort of the user during use, and will not interfere with the monitoring results.

[0063] Third Embodiment

[0064] The present invention also includes a usage method using a wearable fetal heart monitoring device, including the following steps:

[0065] S1. Expand the locking part 102 to prompt the user to pass through the opening position of the locking part 102 and contact the elastic band 101.

[0066] S2. Adjust the positions of the detection probe 5 and the fetal heart probe 6 respectively to move them so that they correspond to the detection positions of the user.

[0067] S3. Drive the position of the protection rod 703 through the telescopic rod 704 to make the protection rod 703 contact the back of the user, and prompt the lumbar support 702 to contact the waist of the user.

[0068] S4. Use the detection probe 5 and the fetal heart probe 6 to detect the state of the user. The vibration of the user's skin drives the movable disk 5021 to vibrate, driving the trigger rod 5022 to vibrate to complete the monitoring of the fetal heart.

[0069] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0070] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wearable fetal heart rate monitoring device, comprising two strap assemblies, characterized in that: A plurality of connecting rods are connected between two belt assemblies. A connecting belt and a lumbar support assembly are connected to both of the two belt assemblies, and the connecting belt and the lumbar support assembly are opposite to each other in the position of the belt assembly. A protection assembly is connected to the lumbar support assembly; a restraint assembly is movably arranged on both of the two connecting belts, and a detection probe and a fetal heart probe are respectively connected to one ends of the two restraint assemblies close to the lumbar support assembly; the protection assembly includes a protection shell, a lumbar support is connected to the protection shell, and protection rods are respectively movably arranged at both ends of the protection shell distributed along the length direction. Among them, the widths of the connecting belt and the lumbar support assembly are both wider than the width of the belt assembly; The plurality of connecting rods are distributed on both sides of the waist, and none of the plurality of connecting rods are connected to the connecting belt and the lumbar support assembly; The detection probe includes a housing, one end of the housing is connected to the restraint assembly, a detection assembly is connected to the housing, the detection assembly includes a movable disk, a trigger rod is connected to one end of the movable disk close to the housing, the end of the trigger rod away from the movable disk is connected to the housing, and a return spring is sleeved on the outer circumference of the trigger rod; the movement frequency of the trigger rod is collected and uploaded, and during the vibration of the movable disk, the return spring is used to reset the position of the movable disk to ensure that the movable disk always abuts against the skin of the user; Two telescopic rods are connected inside the protection shell, and one ends of the two telescopic rods away from each other are respectively connected to the protection rods. The lumbar support is composed of an elastic plate, and both ends of the lumbar support distributed along the length direction are respectively connected to the movable parts of the telescopic rods; The restraint assembly includes a connecting shell, a connecting cavity is penetrated through the connecting shell, the connecting belt penetrates through the connecting cavity, and moving wheels are respectively connected to both side cavity walls of the connecting cavity, and the moving wheels can deflect at an angle on the connecting cavity.

2. The wearable fetal heart rate monitoring device according to claim 1, wherein: The belt assembly includes an elastic belt, the connecting belt and the lumbar support assembly are both connected to the elastic belt, and a locking part is connected to the elastic belt.

3. The wearable fetal heart rate monitoring device according to claim 1, wherein: A working cavity for storing electronic components is opened on the housing, and a ventilation cavity is opened on the connecting shell, and the ventilation cavity is communicated with the working cavity.

4. A method of using a wearable fetal heart rate monitoring device as described in any one of claims 1-3, characterized in that: Including the following steps: S1. Unfold the locking part to make the user pass through the opening position of the locking part and abut against the elastic belt; S2. Respectively adjust the positions of the detection probe and the fetal heart probe to move so that they correspond to the detection positions of the user; S3. Drive the positions of the protection rods to move through the telescopic rods so that the protection rods abut against the back of the user, and make the lumbar support abut against the waist of the user; S4. Use the detection probe and the fetal heart probe to detect the state of the user, drive the movable disk to vibrate through the vibration of the skin of the user, drive the trigger rod to vibrate, and complete the monitoring of the fetal heart.

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