Magnetic attraction charging sealed handheld ultrasonic equipment and charging method

Abstract

The invention provides sealed handheld ultrasonic equipment charged through magnetic attraction and a charging method, and relates to the technical field of handheld ultrasonic equipment.The sealed handheld ultrasonic equipment comprises a handheld ultrasonic equipment body, a sealed shell is arranged outside the handheld ultrasonic equipment body, and a magnetic attraction charging base is arranged in the handheld ultrasonic equipment body; the magnetic attraction charging base is correspondingly attracted to a magnetic attraction charging head of a magnetic attraction charger matched with the handheld ultrasonic equipment body, and the handheld ultrasonic equipment body comprises the steps that real-time magnetic attraction pressure fed back by the magnetic attraction charging head is collected; and controlling the magnetic attraction charger to adjust the real-time magnetic attraction pressure until the real-time magnetic attraction pressure is equal to the preset standard magnetic attraction pressure, and controlling the magnetic attraction charging head to output standard power to charge the handheld ultrasonic equipment body. The charging device has the beneficial effects that a real-time magnetic suction pressure adjusting mechanism is adopted until the preset standard magnetic suction pressure is reached, so that the inconvenience that the charging head is difficult to take down due to overlarge suction force is avoided, the potential safety hazard that the charging head is easy to fall off when the suction force is insufficient is eliminated, and the stability and reliability of the charging process are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of handheld ultrasonic equipment, and in particular to a magnetically charged sealed handheld ultrasonic equipment and a charging method. Background Art

[0002] Handheld ultrasound devices, with their unparalleled portability and efficient diagnostic capabilities, shine brightly in the medical field, providing immediate and accurate support for clinical decision-making. However, in the ever-changing environment of medical practice, these devices often have to face the challenges of liquid splashing or humid atmosphere, which makes the enhancement of their waterproof performance a key issue that cannot be ignored.

[0003] Although significant progress has been made in technological innovation, the handheld ultrasound devices currently on the market still have room for improvement in terms of waterproof design, charging convenience, and overall structural strength. In particular, the traditional USB charging method, although generally convenient, has also become a potential "weakness" of the device. The interface area is directly exposed to the outside. Once water vapor penetrates, it may not only damage the charging function, but also cause a short circuit in the circuit, seriously affecting the long-term stable operation and service life of the device, thereby limiting their widespread application in a wider and more complex medical scenario.

[0004] In order to overcome this bottleneck, the industry is actively exploring innovative solutions. On the one hand, research and development of handheld ultrasound equipment with a high level of waterproofness, using advanced sealing materials and processes, ensures that the equipment remains safe in the event of accidental splashing or short-term immersion, and ensures the continuity and safety of medical work. On the other hand, exploring the application of wireless charging technology to completely get rid of the constraints of wired connections not only eliminates the risk of water vapor intrusion at the interface, but also further improves the convenience and flexibility of use, allowing medical staff to focus more on patient diagnosis without being distracted by cable management. However, the current technology still has major defects in these two aspects, which need to be improved and enhanced. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides a sealed handheld ultrasonic device for magnetic charging, comprising:

[0006] A handheld ultrasound device body, wherein a magnetic charging seat is arranged inside the handheld ultrasound device body, and the magnetic charging seat is correspondingly adsorbed with a magnetic charging head of a magnetic charger matched with the handheld ultrasound device body, and the handheld ultrasound device body comprises:

[0007] The magnetic charging module is used to collect the real-time magnetic pressure fed back by the magnetic charging head, control the magnetic charger to adjust the real-time magnetic pressure until it is equal to a preset standard magnetic pressure, and then control the magnetic charging head to output standard power to charge the handheld ultrasound device body.

[0008] Preferably, a pressure sensor is provided on the magnetic charging head, and an electromagnetic induction magnetic component is also provided around the charging coil of the magnetic charging head. A communication module is provided in the magnetic charger to respectively connect the pressure sensor and the electromagnetic induction magnetic component, and communicate with the handheld ultrasound device body; the communication module includes:

[0009] a pressure adjustment unit, configured to establish network communication with the handheld ultrasound device body, and to feed back the real-time magnetic suction pressure collected by the pressure sensor to the handheld ultrasound device body, and then, upon receiving a pressure adjustment instruction issued by the handheld ultrasound device body, adjust the real-time current of the electromagnetic induction magnetic suction component to adjust the real-time magnetic suction pressure generated, until the real-time magnetic suction pressure is equal to the standard magnetic suction pressure, and then feed back an adjustment completion signal to the handheld ultrasound device body;

[0010] The charging unit is connected to the pressure adjustment unit and is used to control the voltage and current of the charging coil to output the standard power to charge the handheld ultrasound device body when receiving the charging signal sent by the handheld ultrasound device body.

[0011] Preferably, the magnetic charging module includes:

[0012] an adjustment unit, configured to receive the real-time magnetic suction pressure fed back by the magnetic suction charger, then calculate the difference between the real-time magnetic suction pressure and the standard magnetic suction pressure, and gradually issue the pressure adjustment instruction including the adjustment current value according to the size of the difference, until receiving the adjustment completion signal fed back by the magnetic suction charger;

[0013] A charging start unit is connected to the adjustment unit and is used to calculate the standard power required for charging according to the pre-saved device charging parameters after receiving the adjustment completion signal, and then send a charging signal containing the standard power to the magnetic charger.

[0014] Preferably, the shell of the handheld ultrasound device body includes a first shell component and a matching second shell component, and a sealing ring is used to seal the connection between the first shell component and the second shell component.

[0015] Preferably, the first shell component and the second shell component are integrally formed by injection molding.

[0016] The present invention also provides a charging method for a magnetically charged sealed handheld ultrasonic device, which is applied to the above-mentioned sealed handheld ultrasonic device, comprising:

[0017] Step S1, the handheld ultrasound device body collects the real-time magnetic suction pressure fed back by the magnetic suction charging head, and adjusts the real-time magnetic suction pressure until it is equal to a preset standard magnetic suction pressure;

[0018] Step S2, the handheld ultrasound device body controls the magnetic charging head to output standard power to charge the handheld ultrasound device body.

[0019] Preferably, a pressure sensor is provided on the magnetic charging head, an electromagnetic induction magnetic component is also provided around the charging coil of the magnetic charging head, and a communication module is provided in the magnetic charger to respectively connect the pressure sensor and the electromagnetic induction magnetic component, and communicate with the handheld ultrasound device body; the step S1 comprises:

[0020] Step S11, the magnetic charger establishes network communication with the handheld ultrasound device body, and feeds back the real-time magnetic pressure collected by the pressure sensor to the handheld ultrasound device body;

[0021] Step S12, the handheld ultrasound device body receives the real-time magnetic suction pressure fed back by the magnetic suction charger, then calculates the difference between the real-time magnetic suction pressure and the standard magnetic suction pressure, and gradually issues the pressure adjustment instruction including the adjustment current value according to the size of the difference, until the adjustment completion signal fed back by the magnetic suction charger is received;

[0022] Step S13, when the magnetic charger receives the pressure adjustment instruction sent by the handheld ultrasonic device body, it adjusts the real-time current of the electromagnetic induction magnetic component to adjust the real-time magnetic pressure generated, and feeds back an adjustment completion signal to the handheld ultrasonic device body until the real-time magnetic pressure is equal to the standard magnetic pressure.

[0023] Preferably, the step S2 comprises:

[0024] Step S21, after receiving the adjustment completion signal, the handheld ultrasound device body calculates the standard power required for charging according to the pre-saved device charging parameters, and then sends a charging signal containing the standard power to the magnetic charger;

[0025] Step S22, when the magnetic charger receives the charging signal sent by the handheld ultrasound device body, it controls the voltage and current of the charging coil to output the standard power to charge the handheld ultrasound device body.

[0026] The above technical solution has the following advantages or beneficial effects: adopting a real-time magnetic suction pressure adjustment mechanism, the real-time magnetic suction pressure between the magnetic suction charging head and the charging base is accurately collected through the magnetic suction charging module, and the magnetic suction charger is intelligently controlled to dynamically adjust this pressure until the preset standard magnetic suction pressure is reached. This design not only avoids the inconvenience of the charging head being difficult to remove due to excessive suction, but also eliminates the safety hazard of the charging head easily falling off when the suction is insufficient, ensuring the stability and reliability of the charging process. In addition, after the magnetic suction pressure reaches the optimal state, charging is performed according to the standard power, which further improves the charging efficiency and safety, and provides medical workers with a more convenient, efficient and reliable diagnostic tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural schematic diagram of a magnetically charged sealed handheld ultrasonic device in a preferred embodiment of the present invention;

[0028] Figure 2 This is a structural schematic diagram of a magnetic charging head in a preferred embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of a communication module in a preferred embodiment of the present invention;

[0030] Figure 4 This is a structural schematic diagram of a magnetic charging module in a preferred embodiment of the present invention;

[0031] Figure 5 The figure is a schematic diagram of a charging method of a sealed handheld ultrasonic device with magnetic charging in a preferred embodiment of the present invention;

[0032] Figure 6 This is a flow chart of step S1 in a preferred embodiment of the present invention;

[0033] Figure 7 This is a flow chart of step S2 in a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0034] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. The present invention is not limited to this embodiment, and other embodiments may also fall within the scope of the present invention as long as they conform to the gist of the present invention.

[0035] In a preferred embodiment of the present invention, based on the above problems existing in the prior art, a sealed handheld ultrasonic device with magnetic charging is provided. Figure 1 As shown, including:

[0036] The handheld ultrasound device body 1 is provided with a sealed shell 2, and a magnetic charging seat 3 is provided inside the handheld ultrasound device body. The magnetic charging seat 3 is correspondingly adsorbed with a magnetic charging head 41 of a magnetic charger 4 matched with the handheld ultrasound device body. The handheld ultrasound device body 1 includes:

[0037] The magnetic charging module 11 is connected to the magnetic charging seat 3, and is used to collect the real-time magnetic pressure fed back by the magnetic charging head 41, and control the magnetic charger 4 to adjust the real-time magnetic pressure until it is equal to the preset standard magnetic pressure, and then control the magnetic charging head 41 to output standard power to charge the handheld ultrasound device body 1.

[0038] Specifically, in this embodiment, the external interfaces of the handheld ultrasound device are reduced by adopting a magnetic charging method, the parts directly exposed to the outside are reduced, and a sealed shell is used to prevent the handheld ultrasound device from being penetrated by water vapor, thereby reducing the possibility of damage to the charging function and avoiding circuit short circuits.

[0039] For magnetic charging technology, insufficient suction of the magnetic charging head is also a big problem, and it is easy to fall off during charging. If ordinary magnets are used for adsorption, the adsorption effect will be different when facing shells of different thicknesses. Excessive suction will cause the trouble of not being able to remove the charging head. Therefore, the sealed handheld ultrasonic device for magnetic charging in this embodiment adjusts the real-time magnetic suction pressure in real time, so there will be no problem of excessive suction and difficulty in removing the magnetic charging head, nor will there be a problem of insufficient suction and easy falling of the charging head. And after the magnetic suction pressure reaches an appropriate value, charging is performed according to the standard power.

[0040] Compared with the handheld ultrasound devices in the existing technology, it has enhanced waterproof performance and improved charging convenience. The real-time magnetic pressure adjustment mechanism can stabilize the magnetic connection. Due to its excellent waterproof performance and stable magnetic connection, the sealed handheld ultrasound device with magnetic charging can better adapt to various complex environments, such as humid, dusty or mobile medical scenes, providing medical staff with more flexible and reliable diagnostic tools.

[0041] In a preferred embodiment of the present invention, Figure 2 As shown, a pressure sensor 411 is provided on the magnetic charging head 41, and an electromagnetic induction magnetic component 413 is also provided around the charging coil 412 of the magnetic charging head 41. A communication module 42 is provided in the magnetic charger 4 to connect the pressure sensor 411 and the electromagnetic induction magnetic component 413 respectively, and communicate with the handheld ultrasound device body 1; Figure 3 As shown, the communication module 42 includes:

[0042] The pressure adjustment unit 421 is used to establish network communication with the handheld ultrasound device body, and to feed back the real-time magnetic suction pressure collected by the pressure sensor to the handheld ultrasound device body, and then, upon receiving a pressure adjustment instruction from the handheld ultrasound device body, adjust the real-time current of the electromagnetic induction magnetic suction component to adjust the real-time magnetic suction pressure generated, until the real-time magnetic suction pressure is equal to the standard magnetic suction pressure, and then feed back an adjustment completion signal to the handheld ultrasound device body;

[0043] The charging unit 422 is connected to the pressure adjustment unit 421 and is used to control the voltage and current of the charging coil to output standard power to charge the handheld ultrasound device body when receiving a charging signal sent by the handheld ultrasound device body.

[0044] Specifically, in this embodiment, a charging coil is provided on the magnetic charging head for charging the handheld ultrasonic device, a pressure sensor is provided for real-time detection of the pressure generated by the magnetic charging head adsorbed on the handheld ultrasonic device to reflect the adsorption force, and an electromagnetic induction magnetic component is provided for generating different magnetic forces when different currents are passed according to the electromagnetic induction principle, so as to adjust the adsorption force generated by the magnetic charging head adsorbed on the handheld ultrasonic device;

[0045] When using ordinary magnets, the suction force between the magnetic charging head and the magnetic charging base can be calculated using the magnetic force calculation formula:

[0046]

[0047] Among them, F m is the magnetic force, μ0 is the vacuum magnetic permeability, M1 and M2 are the magnetic moments of the two magnets respectively, and d is the distance between the magnets.

[0048] Assume that the magnetic moment of the NdFeB magnet used is M1 = 0.5A·m 2 and M2=0.5A·m 2 , magnet spacing

[0049] =0.01m, vacuum magnetic permeability μ0 = 4π×10 -7 N / A 2 , then the magnetic force F m The calculation is as follows:

[0050]

[0051] It can be seen that the magnetic force generated by ordinary magnets is fixed, and the larger the distance between the magnets, the smaller the magnetic force between them. That is to say, the thicker the shell, the smaller the attraction between them. This will lead to the problem of low suction force and easy falling off of the magnetic charging head.

[0052] The magnetic moment of the magnet generated by the electromagnetic induction magnetic attraction component in this embodiment can be dynamically adjusted by adjusting the current:

[0053] The formula for calculating the magnetic moment of a magnet (or more generally, a current-carrying coil) generated by electromagnetic induction can be expressed as:

[0054] m=iSn

[0055] Alternatively, if the coil has multiple turns (N turns), the magnetic moment is calculated as:

[0056] m=NISn

[0057] in:

[0058] m stands for magnetic moment, which is a physical quantity that describes the strength and direction of an object's magnetism.

[0059] i represents the current intensity, that is, the current flowing through the coil, and the unit is ampere (A).

[0060] S represents the coil area, that is, the plane area occupied by the coil, the unit can be square meters (m 2 ).

[0061] n is a unit vector that forms a right-hand spiral relationship with the direction of the current and is used to indicate the direction of the magnetic moment. Specifically, when the right hand holds the coil with four fingers pointing in the direction of the current, the direction pointed by the thumb is the direction of n.

[0062] N represents the number of turns of the coil, that is, the number of layers or turns of wire in the coil.

[0063] This formula describes the relationship between the magnetic moment generated by a current-carrying coil during electromagnetic induction and the current intensity, coil area, and number of coil turns. The magnitude of the magnetic moment is proportional to the current intensity and the number of coil turns, and is also somewhat related to the coil area (although the area itself does not directly affect the magnitude of the magnetic moment, it is related to the distribution of the current in space).

[0064] It should be noted that the direction of the magnetic moment is determined by the direction of the current and the geometric shape of the coil, which is specifically represented by the unit vector n. Although the shape of the coil, the area of ​​the coil, and the number of turns of the coil are fixed when the electromagnetic induction magnetic suction component is manufactured, the current intensity can be changed. The charging coil generates different magnetic forces when different currents pass through it to adjust the adsorption force generated by the magnetic charging head adsorbed on the handheld ultrasound device; when the real-time magnetic suction pressure is equal to the standard magnetic suction pressure, it indicates that the adjustment is completed, and then charging is carried out.

[0065] In a preferred embodiment of the present invention, Figure 4 As shown, the magnetic charging module 11 includes:

[0066] The adjustment unit 111 is used to receive the real-time magnetic suction pressure fed back by the magnetic suction charger, then calculate the difference between the real-time magnetic suction pressure and the standard magnetic suction pressure, and gradually issue a pressure adjustment instruction including an adjustment current value according to the size of the difference until an adjustment completion signal fed back by the magnetic suction charger is received;

[0067] The charging start unit 112 is connected to the adjustment unit 111, and is used to calculate the standard power required for charging according to the pre-stored device charging parameters after receiving the adjustment completion signal, and then send a charging signal including the standard power to the magnetic charger.

[0068] Specifically, in this embodiment, different handheld ultrasonic devices have different models and use different thicknesses of sealed shells, so the corresponding standard magnetic suction pressures are also different. Whether it is necessary to adjust the current of the electromagnetic induction magnetic suction component to adjust the real-time magnetic suction pressure needs to be judged in the handheld ultrasonic device.

[0069] The handheld ultrasonic device subtracts the real-time magnetic pressure from the standard magnetic pressure. If the difference is positive (the standard magnetic pressure is greater than the real-time magnetic pressure), the current needs to be increased; if the difference is negative (the standard magnetic pressure is less than the real-time magnetic pressure), the current needs to be decreased. The adjustment method is gradual, so that the real-time magnetic pressure slowly approaches the standard magnetic pressure, which is more accurate.

[0070] Then control the magnetic charging head to charge. To calculate the charging power output by the magnetic charging head, we need to understand several key parameters: output voltage (V) and output current (I). The charging power (P) is the product of these two parameters, that is:

[0071] P=V×I

[0072] P is power, the unit is watt (W); V is voltage, the unit is volt (V); I is current, the unit is ampere (A). Charging is performed by adjusting the current and voltage of the charging coil of the magnetic charging head to reach the standard power.

[0073] In a preferred embodiment of the present invention, the sealed shell 2 of the handheld ultrasound device body includes a first shell component 21 and a matching second shell component 22. The connection between the first shell component 21 and the second shell component 22 is sealed by a sealing ring 23. The first shell component 21 and the second shell component 22 are integrally formed by injection molding.

[0074] Specifically, the shell structure of most existing handheld ultrasound devices is a spliced ​​shell composed of multiple small parts, which is prone to gaps at the joints, resulting in poor waterproof performance. In addition, there is no sealing treatment, so the reliability is poor when facing high humidity or water immersion environment, and the long-term stability of the device cannot be guaranteed.

[0075] The housing of the handheld ultrasound device in this embodiment is integrally formed by injection molding, minimizing the number of spliced ​​parts and maximizing the sealing performance. Sealing rings are used at the joints of the housing parts to further improve the sealing performance of the entire device.

[0076] Furthermore, one-piece molding can improve the overall structural strength of the device and reduce the possibility of damage to the casing due to insufficient strength at the joints.

[0077] In order to improve the overall structural strength, the internal structure is optimized: the positions of internal components are arranged reasonably to reduce stress concentration points.

[0078] Shell thickness calculation:

[0079]

[0080] Among them, t is the shell thickness, P is the minimum expected external pressure, d is the shell diameter, and σ is the allowable stress of the material. By selecting a suitable shell material and adjusting the shell thickness, the desired compressive strength can be achieved to withstand the external pressure of P.

[0081] The present invention also provides a charging method for a magnetically charged sealed handheld ultrasonic device, which is applied to the above-mentioned sealed handheld ultrasonic device, such as Figure 5 As shown, including:

[0082] Step S1, the handheld ultrasound device body collects the real-time magnetic suction pressure fed back by the magnetic suction charging head, and adjusts the real-time magnetic suction pressure until it is equal to the preset standard magnetic suction pressure;

[0083] Step S2, the handheld ultrasound device body controls the magnetic charging head to output standard power to charge the handheld ultrasound device body.

[0084] In a preferred embodiment of the present invention, a pressure sensor is provided on the magnetic charging head, an electromagnetic induction magnetic component is provided around the charging coil of the magnetic charging head, and a communication module is provided in the magnetic charger to respectively connect the pressure sensor and the electromagnetic induction magnetic component, and communicate with the handheld ultrasound device body; Figure 6 As shown, step S1 includes:

[0085] Step S11, the magnetic charger establishes network communication with the handheld ultrasound device body, and feeds back the real-time magnetic pressure collected by the pressure sensor to the handheld ultrasound device body;

[0086] Step S12, the handheld ultrasound device body receives the real-time magnetic suction pressure fed back by the magnetic suction charger, then calculates the difference between the real-time magnetic suction pressure and the standard magnetic suction pressure, and gradually issues pressure adjustment instructions including the adjustment current value according to the size of the difference, until receiving the adjustment completion signal fed back by the magnetic suction charger;

[0087] Step S13, when the magnetic charger receives the pressure adjustment instruction from the handheld ultrasound device body, it adjusts the real-time current of the electromagnetic induction magnetic component to adjust the real-time magnetic pressure generated, and feeds back an adjustment completion signal to the handheld ultrasound device body when the real-time magnetic pressure is equal to the standard magnetic pressure.

[0088] In a preferred embodiment of the present invention, Figure 7 As shown, step S2 includes:

[0089] Step S21, after receiving the adjustment completion signal, the handheld ultrasound device body calculates the standard power required for charging according to the pre-stored device charging parameters, and then sends a charging signal containing the standard power to the magnetic charger;

[0090] Step S22, when the magnetic charger receives the charging signal sent by the handheld ultrasound device body, it controls the voltage and current of the charging coil to output standard power to charge the handheld ultrasound device body.

[0091] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the contents of this specification and illustrations should be included in the protection scope of the present invention.

Claims

1. A magnetically charged sealed handheld ultrasonic device, characterized in that: include: A handheld ultrasound device body, wherein a sealed shell is provided on the outside of the handheld ultrasound device body, and a magnetic charging seat is provided inside the handheld ultrasound device body, and the magnetic charging seat is correspondingly adsorbed with a magnetic charging head of a magnetic charger matched with the handheld ultrasound device body, and the handheld ultrasound device body comprises: The magnetic charging module is connected to the magnetic charging seat and is used to collect the real-time magnetic pressure fed back by the magnetic charging head, and control the magnetic charger to adjust the real-time magnetic pressure until it is equal to a preset standard magnetic pressure, thereby controlling the magnetic charging head to output standard power to charge the handheld ultrasound device body.

2. The sealed handheld ultrasonic device according to claim 1, characterized in that: The magnetic charging head is provided with a pressure sensor, and an electromagnetic induction magnetic component is also provided around the charging coil of the magnetic charging head. The magnetic charger is provided with a communication module which is respectively connected to the pressure sensor and the electromagnetic induction magnetic component, and communicates with the handheld ultrasound device body; the communication module includes: a pressure adjustment unit, configured to establish network communication with the handheld ultrasound device body, and to feed back the real-time magnetic suction pressure collected by the pressure sensor to the handheld ultrasound device body, and then, upon receiving a pressure adjustment instruction issued by the handheld ultrasound device body, adjust the real-time current of the electromagnetic induction magnetic suction component to adjust the real-time magnetic suction pressure generated, until the real-time magnetic suction pressure is equal to the standard magnetic suction pressure, and then feed back an adjustment completion signal to the handheld ultrasound device body; The charging unit is connected to the pressure adjustment unit and is used to control the voltage and current of the charging coil to output the standard power to charge the handheld ultrasound device body when receiving the charging signal sent by the handheld ultrasound device body.

3. The sealed handheld ultrasonic device according to claim 2, characterized in that: The magnetic charging module comprises: an adjustment unit, configured to receive the real-time magnetic suction pressure fed back by the magnetic suction charger, then calculate the difference between the real-time magnetic suction pressure and the standard magnetic suction pressure, and gradually issue the pressure adjustment instruction including the adjustment current value according to the size of the difference, until receiving the adjustment completion signal fed back by the magnetic suction charger; A charging start unit is connected to the adjustment unit and is used to calculate the standard power required for charging according to the pre-saved device charging parameters after receiving the adjustment completion signal, and then send a charging signal containing the standard power to the magnetic charger.

4. The sealed handheld ultrasonic device according to claim 1, characterized in that: The sealed shell of the handheld ultrasound device body comprises a first shell component and a matching second shell component, and a sealing ring is used to seal the connection between the first shell component and the second shell component.

5. The sealed handheld ultrasonic device according to claim 4, characterized in that: The first shell component and the second shell component are integrally formed by an injection molding process.

6. A charging method for a magnetically charged sealed handheld ultrasonic device, characterized in that: A sealed handheld ultrasonic device as claimed in any one of claims 1 to 5, comprising: Step S1, the handheld ultrasound device body collects the real-time magnetic suction pressure fed back by the magnetic suction charging head, and adjusts the real-time magnetic suction pressure until it is equal to a preset standard magnetic suction pressure; Step S2, the handheld ultrasound device body controls the magnetic charging head to output standard power to charge the handheld ultrasound device body.

7. The charging method according to claim 6, characterized in that: The magnetic charging head is provided with a pressure sensor, and an electromagnetic induction magnetic component is also provided around the charging coil of the magnetic charging head. The magnetic charger is provided with a communication module which is respectively connected to the pressure sensor and the electromagnetic induction magnetic component, and communicates with the handheld ultrasound device body; the step S1 comprises: Step S11, the magnetic charger establishes network communication with the handheld ultrasound device body, and feeds back the real-time magnetic pressure collected by the pressure sensor to the handheld ultrasound device body; Step S12, the handheld ultrasound device body receives the real-time magnetic suction pressure fed back by the magnetic suction charger, then calculates the difference between the real-time magnetic suction pressure and the standard magnetic suction pressure, and gradually issues the pressure adjustment instruction including the adjustment current value according to the size of the difference, until the adjustment completion signal fed back by the magnetic suction charger is received; Step S13, when the magnetic charger receives the pressure adjustment instruction sent by the handheld ultrasonic device body, it adjusts the real-time current of the electromagnetic induction magnetic component to adjust the real-time magnetic pressure generated, and feeds back an adjustment completion signal to the handheld ultrasonic device body until the real-time magnetic pressure is equal to the standard magnetic pressure.

8. The charging method according to claim 7, characterized in that: The step S2 comprises: Step S21, after receiving the adjustment completion signal, the handheld ultrasound device body calculates the standard power required for charging according to the pre-saved device charging parameters, and then sends a charging signal containing the standard power to the magnetic charger; Step S22, when the magnetic charger receives the charging signal sent by the handheld ultrasound device body, it controls the voltage and current of the charging coil to output the standard power to charge the handheld ultrasound device body.

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