Fetal heart simulation probe and fetal heart simulator

Abstract

The utility model relates to the technical field of medical instruments, and provides a fetal heart simulation probe and a fetal heart simulator, the fetal heart simulation probe comprises a shell, a first magnetic part, a second magnetic part and a coil, the first magnetic part is movably arranged in the shell, and the coil and the second magnetic part are both fixedly installed in the shell; wherein the coil is located between the first magnetic piece and the second magnetic piece, heteropoles of the first magnetic piece and the coil attract each other, and homopoles of the first magnetic piece and the second magnetic piece repel each other; a magnetic sensor is installed in the shell and used for detecting vibration information of the first magnetic part. The first magnetic part moves downwards under the attraction of a magnetic field generated by the coil, and the first magnetic part can move upwards under the action of an inherent repulsive force between the second magnetic part and the first magnetic part, so that the first magnetic part vibrates up and down; by controlling the intensity of the magnetic field generated by the coil, the amplitude and frequency of the first magnetic piece are accurately regulated and controlled, and the precision of fetal heart signal simulation is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a fetal heart rate simulation probe and a fetal heart rate simulator. Background Technology

[0002] A fetal heart rate simulator is an important medical device used to simulate fetal heartbeat signals in order to test and calibrate devices such as fetal monitors. In the development of fetal monitors, because it is inconvenient to directly use pregnant women as experimental subjects, the fetal heart rate simulator plays a crucial role in the research and quality control process.

[0003] Most existing fetal heart rate simulators use a coil-permanent magnet model as the signal simulation end, simulating fetal heart signals through the principle of electromagnetic induction. When the motherboard receives a signal command, it controls the coil to generate a magnetic field of corresponding magnitude. This magnetic field drives the permanent magnet to vibrate, thus simulating the beating of the fetal heart. However, due to the physical characteristics of the permanent magnet and the coil, this model has difficulties in simulating fetal heart signals with weak intensity. When simulating very weak fetal heart signals, the current change in the coil may not be sufficient to drive the permanent magnet to produce enough vibration, resulting in insufficient simulated signal strength. This makes it impossible to accurately simulate the actual fetal heart signal and ensure the accuracy of the fetal heart signal simulation. Utility Model Content

[0004] This invention provides a fetal heart rate simulation probe and a fetal heart rate simulator to solve the problem of low simulation accuracy in current fetal heart rate simulation.

[0005] This utility model provides a fetal heart rate simulation probe, comprising: a housing, a first magnetic component, a second magnetic component, and a coil. The first magnetic component is movably disposed within the housing, and the coil and the second magnetic component are both fixedly installed within the housing. The coil is located between the first and second magnetic components, and the opposite poles of the first and second magnetic components attract each other, while the like poles of the first and second magnetic components repel each other. A magnetic sensor is installed within the housing to detect the vibration information of the first magnetic component.

[0006] According to the present invention, the first magnetic component and the second magnetic component are both permanent magnets.

[0007] According to the present invention, a fetal heart rate simulation probe is provided, wherein a positioning post is fixedly installed inside the housing, a coil is wound around the positioning post, a first groove is provided at the first end of the positioning post, and the groove opening of the first groove is connected to the inner wall of the housing to form an active channel for the movement of the first magnetic component.

[0008] According to the present invention, a fetal heart rate simulation probe is provided in which the second end of the positioning post is provided with a second groove, and the second magnetic element is fixedly inserted into the second groove.

[0009] Alternatively, the second magnetic component is bonded to the inner wall of the housing by an adhesive, and the second magnetic component and the second end of the positioning post are arranged opposite to each other.

[0010] According to the present invention, a fetal heart rate simulation probe is provided, wherein the bottom of the first groove has a through hole, and the through hole extends to the bottom of the second groove.

[0011] According to the present invention, a fetal heart rate simulation probe is provided with a plurality of function keys on the outer wall of the housing, a circuit board is installed inside the housing, the plurality of function keys are electrically connected to the circuit board respectively, the circuit board is electrically connected to the coil, and each function key is used to adjust the current passing through the coil.

[0012] According to the present invention, a fetal heart rate simulation probe is provided, wherein a power supply is installed inside the housing, and the power supply is electrically connected to the circuit board and the coil respectively.

[0013] This utility model also provides a fetal heart rate simulator, including a housing, a motherboard, and a fetal heart rate simulation probe as described in any of the above. The motherboard is fixedly installed inside the housing, and the motherboard and the magnetic sensor are communicatively connected.

[0014] According to the present invention, a fetal heart rate simulator is provided, wherein a display screen is mounted on the front of the housing, and the display screen is electrically connected to the main board;

[0015] And / or, a speaker is fixedly installed inside the housing, the housing is provided with a sound outlet, the speaker is electrically connected to the motherboard, and the sound outlet of the speaker faces the sound outlet.

[0016] According to the present invention, a fetal heart rate simulator also includes a data cable. The housing is provided with an electrical interface. One end of the data cable is electrically connected to the coil, and the other end is provided with an electrical connector. The electrical connector is electrically plugged into the electrical interface.

[0017] Alternatively, the motherboard and the magnetic sensor can be connected via a Bluetooth module.

[0018] This invention provides a fetal heart rate simulation probe and a fetal heart rate simulator. A coil is located between a first magnetic component and a second magnetic component. The first magnetic component and the coil are attracted to each other by opposite poles, while the first magnetic component and the second magnetic component are repelled by like poles. When the coil is energized, it generates a magnetic field. The first magnetic component is attracted downwards by the magnetic field, and due to the inherent repulsive force between the second and first magnetic components, it can move upwards, thus achieving vibration of the first magnetic component. By precisely adjusting the current in the coil, the strength of the magnetic field generated by the coil is controlled, thereby changing the magnitude of the resultant force on the first magnetic component. This allows for precise control of the amplitude and frequency of the first magnetic component's vibration, improving the accuracy of fetal heart rate signal simulation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a perspective view of the fetal heart rate simulation probe provided by this utility model.

[0021] Figure 2 This is a partial structural schematic diagram of the fetal heart rate simulation probe provided by this utility model.

[0022] Figure label:

[0023] 1. Housing; 2. First magnetic component; 3. Second magnetic component; 4. Coil; 5. Positioning post; 51. First groove; 52. Second groove; 6. Circuit board. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] The terms "first" and "second" in the specification and claims of this utility model may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise stated, "multiple" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] The following is combined Figure 1 and Figure 2 The present invention provides a detailed description of a fetal heart rate simulation probe and a fetal heart rate simulator through specific embodiments and application scenarios.

[0029] like Figure 1 and Figure 2 As shown, this utility model provides a fetal heart rate simulation probe, including: a housing 1, a first magnetic component 2, a second magnetic component 3, and a coil 4. The first magnetic component 2 is movably disposed within the housing 1. The coil 4 and the second magnetic component 3 are both fixedly installed within the housing 1.

[0030] The coil 4 is located between the first magnetic component 2 and the second magnetic component 3, with the opposite poles of the first magnetic component 2 and the coil 4 attracting each other, and the like poles of the first magnetic component 2 and the second magnetic component 3 repelling each other. A magnetic sensor is installed inside the housing 1 to detect the vibration information of the first magnetic component 2.

[0031] Understandably, the housing 1 is rectangular or cylindrical in shape to accommodate the coil 4, the first magnetic component 2, and the second magnetic component 3. The housing 1 provides support and physical protection for the coil 4, the first magnetic component 2, and the second magnetic component 3. The housing 1 is made of materials such as plastic or silicone that do not interfere with the magnetic field.

[0032] Specifically, coil 4 is fixed inside housing 1. First magnetic element 2 and second magnetic element 3 are located at the top and bottom of coil 4, respectively. The magnetic pole of the end of coil 4 near the first magnetic element 2 is opposite to the magnetic pole of the end of the first magnetic element 2 near coil 4. Furthermore, the magnetic poles of the first magnetic element 2 and second magnetic element 3 near the end of coil 4 are aligned. For example, both the first magnetic element 2 and second magnetic element 3 near the end of coil 4 are N poles, and the end of coil 4 near the first magnetic element 2 is an S pole. Alternatively, both the first magnetic element 2 and second magnetic element 3 near the end of coil 4 are N poles, and the end of coil 4 near the first magnetic element 2 is an S pole. Optionally, both the first magnetic element 2 and second magnetic element 3 are permanent magnets.

[0033] When the first magnetic component 2 is stationary, it is stably fixed inside the housing 1 by the repulsive force of the second magnetic component 3. When the coil 4 is energized, it generates a magnetic field. The first magnetic component 2 is attracted downwards by the magnetic field, and due to the inherent repulsive force between the second magnetic component 3 and the first magnetic component 2, it can move upwards, thus achieving up-and-down vibration of the first magnetic component 2. By precisely adjusting the current in the coil 4, the strength of the magnetic field generated by the coil 4 can be controlled, thereby changing the magnitude of the attractive force on the first magnetic component 2. Since the first magnetic component 2 is simultaneously subjected to the inherent repulsive force of the second magnetic component 3 and the attractive force of the coil 4, the amplitude and frequency of the first magnetic component 2 can be precisely controlled by adjusting the magnetic field strength.

[0034] When the magnetic field strength increases, the attractive force on the first magnetic component 2 increases, causing it to move downwards. When the magnetic field strength decreases, the attractive force on the first magnetic component 2 decreases, and the repulsive force of the second magnetic component 3 on the first magnetic component 2 becomes dominant, causing it to move upwards. Through this mechanism, the first magnetic component 2 can achieve balance at different positions within the housing 1, thereby improving the accuracy of fetal heart rate simulation.

[0035] A magnetic sensor is installed inside the housing 1 to detect the vibration changes of the first magnetic component 2, and then converts the information into an electrical signal and sends it to the main board of the fetal heart rate simulator. The main board then generates fetal heart rate signals of different intensities based on the electrical signal fed back by the magnetic sensor, thereby improving the accuracy of the fetal heart rate simulation.

[0036] This invention provides a fetal heart rate simulation probe. A coil 4 is located between a first magnetic element 2 and a second magnetic element 3. The first magnetic element 2 and the coil 4 are attracted to each other by opposite poles, while the first magnetic element 2 and the second magnetic element 3 are repelled by like poles. When the coil 4 is energized, it generates a magnetic field. The first magnetic element 2 is attracted downward by the magnetic field and moves upward due to the inherent repulsive force between the second magnetic element 3 and the first magnetic element 2. This allows the first magnetic element 2 to vibrate up and down. By precisely adjusting the current in the coil 4, the strength of the magnetic field generated by the coil 4 can be controlled, thereby changing the magnitude of the resultant force on the first magnetic element 2 and achieving precise control of the amplitude and frequency of the first magnetic element 2, thus improving the accuracy of fetal heart rate signal simulation.

[0037] In some embodiments, such as Figure 2 As shown, a positioning post 5 is fixedly installed inside the housing 1. A coil 4 is wound around the positioning post 5. The first end of the positioning post 5 is provided with a first groove 51. The opening of the first groove 51 is connected to the inner wall of the housing 1, forming an active channel for the movement of the first magnetic component 2.

[0038] Specifically, the axial direction of the positioning post 5 is aligned with the axial direction of the housing 1. The first end of the positioning post 5 is near the first magnetic element 2, and the second end of the positioning post 5 is near the second magnetic element 3. The first groove 51 extends along the axial direction of the positioning post 5. The first end of the positioning post 5 is connected to the inner wall of the housing 1 to form a movable channel. The coil 4 is spirally wound around the outer wall of the positioning post 5 along its axial direction. The second magnetic element 3 is fixed to the second end of the positioning post 5, causing the first magnetic element 2 to move up and down within the movable channel under the combined force of the repulsive force of the second magnetic element 3 and the attractive force of the coil 4, thereby generating vibration to simulate the heartbeat of a fetus.

[0039] In some embodiments, the fetal heart rate simulation probe further includes a mounting rod. A connector protrudes from the inner wall of the housing 1. The mounting rod is fixed to the connector, or the mounting rod and connector are an integral structure. The axial direction of the mounting rod is aligned with the axial direction of the housing 1. A coil 4 is wound around the outer wall of the mounting rod along its axial direction. A second magnetic element 3 is fixed to the inner wall of the housing 1 and is arranged opposite to one end of the mounting rod. In this embodiment, the housing 1 includes a cover plate, and the outer wall of the housing 1 is recessed inward to form a mounting groove, which is arranged opposite to the other end of the mounting rod. The cover plate covers the mounting groove, and the first magnetic element 2 is accommodated in the accommodating space formed between the cover plate and the groove wall.

[0040] In some embodiments, such as Figure 2As shown, the second end of the positioning post 5 is provided with a second groove 52. The second magnetic element 3 is fixedly inserted into the second groove 52. The second groove 52 extends along the axial direction of the positioning post 5. The size of the second groove 52 is adapted to the size of the second magnetic element 3 to ensure that the second magnetic element 3 can be stably inserted into the second groove 52, ensuring the stability of the repulsive force on the first magnetic element 2, and thus ensuring the stability of the fetal heartbeat simulation.

[0041] Alternatively, the second magnetic component 3 can be bonded to the inner wall of the housing 1 using an adhesive. The second magnetic component 3 and the second end of the positioning post 5 are arranged opposite each other, as long as the stability of the second magnetic component 3 can be ensured. Optionally, the adhesive can be double-sided tape or structural adhesive.

[0042] Furthermore, in some embodiments, the bottom of the first groove 51 has a through hole. The through hole extends to the bottom of the second groove 52 to minimize the interference of the repulsive force between the positioning post 5 and the first magnetic element 2 and the second magnetic element 3, ensuring that the second magnetic element 3 has sufficient repulsive force on the first magnetic element 2, so that the first magnetic element 2 has a larger upward movement stroke, thereby improving the accuracy of fetal heartbeat simulation.

[0043] In some embodiments, the outer wall of the housing 1 is provided with a plurality of function keys. A circuit board 6 is installed inside the housing 1. The plurality of function keys are electrically connected to the circuit board 6. The circuit board 6 is electrically connected to the coil 4. Each function key is configured to regulate the current passing through the coil 4.

[0044] Specifically, multiple function keys are arranged side by side. Each function key is used to adjust the fetal heart rate signal to a corresponding level. The multiple function keys are electrically connected to the circuit board 6. When any function key is triggered, the circuit board 6 immediately controls the coil 4 to generate a current of a corresponding magnitude to adjust the magnetic field to a preset intensity, thereby enabling the first magnetic component 2 to generate a fetal heart rate signal of a corresponding intensity.

[0045] Optionally, the function keys can be knobs or push-buttons.

[0046] In some embodiments, a power supply is installed inside the housing 1. The power supply is electrically connected to both the circuit board 6 and the coil 4 to simultaneously power both the circuit board 6 and the coil 4. Optionally, the power supply is a lithium battery or a nickel-cadmium battery.

[0047] This utility model also provides a fetal heart rate simulator, including a housing, a main board, and the aforementioned fetal heart rate simulation probe. The main board is fixedly installed inside the housing. The main board and the magnetic sensor are communicatively connected.

[0048] The magnetic sensor can send the vibration state changes of the first magnetic component 2 to the motherboard in real time, so that the motherboard can generate signals of different intensities based on the vibration state changes of the first magnetic component 2. These signals can be used to simulate fetal heart signals of different fetal heart rates.

[0049] Furthermore, in some embodiments, a display screen is mounted on the front of the housing, and the display screen is electrically connected to the motherboard so that the motherboard can feed back simulated fetal heart signals to the display screen for easy viewing by the user.

[0050] In some embodiments, a speaker is fixedly mounted inside the housing. The housing has a sound outlet. The speaker's sound outlet faces the sound outlet. The speaker is electrically connected to the motherboard so that the motherboard feeds back simulated fetal heart signals to the speaker for playback, allowing the user to listen to simulated fetal movement sounds, thus improving ease of use.

[0051] In some embodiments, the fetal heart rate simulator also includes a data cable. The housing has an electrical interface. One end of the data cable is electrically connected to a magnetic sensor, and the other end has an electrical connector.

[0052] Optionally, the electrical interface can be a USB, Light, or Type-C interface. The electrical connector can be a USB, Light, or Type-C connector that is compatible with the electrical interface. The electrical connector is electrically plugged into the electrical interface to establish a communication connection between the magnetic sensor and the motherboard.

[0053] Alternatively, the motherboard and the magnetic sensor can communicate via a Bluetooth module, avoiding the inconvenience caused by the limited length of the data cable and improving user convenience. The Bluetooth module can be a low-power Bluetooth module or a dual-mode Bluetooth module, as described in detail here.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fetal heart simulation probe, characterized by, The application relates to a fetal heart simulation probe, which comprises a shell, a first magnetic part, a second magnetic part and a coil, the first magnetic part is movably arranged in the shell, the coil and the second magnetic part are fixedly arranged in the shell, the coil is located between the first magnetic part and the second magnetic part, the first magnetic part and the coil are of opposite poles and are attracted to each other, and the first magnetic part and the second magnetic part are of the same pole and repel each other; a magnetic force sensor is arranged in the shell and is used for detecting vibration information of the first magnetic part. The first magnetic part and the second magnetic part are both permanent magnets.

2. The fetal heart simulation probe of claim 1, wherein, A positioning column is fixedly arranged in the shell, the coil is arranged around the positioning column, a first groove is arranged at a first end of the positioning column, a groove opening of the first groove is connected with an inner wall of the shell to form a movable channel for the first magnetic part.

3. The fetal heart simulation probe of claim 1, wherein, A second groove is arranged at a second end of the positioning column, and the second magnetic part is fixedly arranged in the second groove.

4. The fetal heart simulation probe of claim 3, wherein, Alternatively, the second magnetic part is bonded to the inner wall of the shell through an adhesive, and the second magnetic part and the second end of the positioning column are arranged oppositely. A through hole is arranged at the groove bottom of the first groove, and the through hole penetrates to the groove bottom of the second groove.

5. The fetal heart simulation probe of claim 4, wherein, An outer wall of the shell is provided with a plurality of function keys, a circuit board is arranged in the shell, the plurality of function keys are electrically connected with the circuit board respectively, the circuit board is electrically connected with the coil, and each function key is used for adjusting current passing through the coil.

6. The fetal heart simulation probe of claim 1, wherein, A power supply is arranged in the shell, and the power supply is electrically connected with the circuit board and the coil respectively.

7. The fetal heart simulation probe of claim 6, wherein, The application further relates to a fetal heart simulation probe, which comprises a shell, a main board and the fetal heart simulation probe as claimed in any one of claims 1 to 7, the main board is fixedly arranged in the interior of the shell, and the main board is communicatively connected with the magnetic force sensor.

8. A fetal heart simulator, characterized by, A display screen is arranged on the front surface of the shell, and the display screen is electrically connected with the main board.

9. The fetal model of claim 8, wherein, Alternatively, a loudspeaker is fixedly arranged in the interior of the shell, the shell is provided with a sound outlet, the loudspeaker is electrically connected with the main board, and a sound outlet end of the loudspeaker faces the sound outlet. A data line is further arranged, the shell is provided with an electrical interface, one end of the data line is electrically connected with the coil, the other end is provided with an electrical connector, and the electrical connector is electrically connected with the electrical interface.

10. The fetal model of claim 8, wherein, Alternatively, the main board and the magnetic force sensor are communicatively connected through a Bluetooth module. ​

Images