Portable ultrasonic device

Abstract

The invention provides portable ultrasonic equipment. The portable ultrasonic equipment comprises a main body structure and an adjustable common mode filter arranged in the main body structure, the adjustable common-mode filter comprises a variable common-mode inductor assembly and a magnetic field generation assembly. The magnetic field generation assembly is used for forming magnetic fields with different intensities under different driving currents; the variable common-mode inductor assembly is located within the coverage range of the magnetic field, the input end of the variable common-mode inductor assembly is electrically connected with an external power grid, and the output end is electrically connected with a power supply module in the main body structure; a variable-form magnetic material is arranged in the variable common-mode inductor assembly, and the variable common-mode inductor assembly is used for generating different inductance values under the action of magnetic fields with different intensities so as to filter interference signals in an external power grid and supply power to the portable ultrasonic equipment through the power supply module. According to the portable ultrasonic equipment, the common mode inductance value can be adjusted according to the interference frequency of any frequency band, the optimal filtering effect is achieved, and accurate imaging is achieved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of medical devices, and in particular to a portable ultrasonic device. Background Art

[0002] The ultrasonic transceiver is the core component of the B-ultrasound equipment. It works under weak current signals (the echo signal is generally between a few microvolts and tens of millivolts). To accurately collect signals under such weak current signals, it is necessary to strictly avoid external interference. External interference is mainly introduced by the power grid at the supply end of the power grid. Since various electrical equipment are connected to the same power grid, such as motors, light switches, chopper appliances, computers, etc., these electrical equipment will generate a large number of interference signals when working or switching, and spread to the power grid through the power grid lines. Other electrical equipment in the same power grid will be subject to different interferences according to the distance from various interference sources. Blocking the interference of the power grid is particularly important for B-ultrasound equipment.

[0003] In order to block interference from the power grid, B-ultrasound equipment uses various methods, such as traps, differential mode coils, common mode coils, etc. The most difficult to solve is common mode interference. The reason is that the common mode filter inductor produced by the common mode coil wound by the same magnetic ring only produces the best filtering effect on the interference frequency in a specific frequency band. When the interference frequency changes, the original common mode inductance cannot meet the interference filtering requirements. For common mode filter inductors wound with the same magnetic material (the same series of the same brand uses the same magnetic material), the larger the inductance, the more the frequency of the best filtering effect shifts to low frequencies. On the contrary, the smaller the inductance, the more the best filtering effect shifts to high frequencies. Figure 1 As shown in Figure 2, the impedance of four magnetic materials with different inductance at different frequencies, where the higher the impedance, the better the filtering effect.

[0004] Common-mode interference has little impact on the desktop B-ultrasound machines in hospitals. This is because once the desktop machine is installed in the B-ultrasound room, it is rarely moved, and the adjusted filtering characteristics can maintain the filtering effect well. However, portable B-ultrasound machines often need to work in different environments, and are carried by medical vehicles in various interference situations, different power grids, and at long and short distances from different interference sources. They are even used in extreme environments, such as earthquakes and wars. This makes portable B-ultrasound machines always at a disadvantage in terms of common-mode interference.

[0005] In order to solve this problem in the prior art, several different "filter-type grid lines" are configured for the portable B-ultrasound machine. Filter boxes with different inductances are designed in the middle of the grid line to adapt to different environments. However, the need to carry multiple special grid lines makes the equipment heavy and increases the difficulty of carrying. In addition, there are only a few fixed inductance options, which cannot cover interference in all bands and still cannot achieve the best filtering effect, resulting in inaccurate imaging. Summary of the invention

[0006] The technical problem to be solved by the present disclosure is to provide a portable ultrasound device in order to overcome the defect that the portable B-ultrasound machine in the prior art cannot produce the best filtering effect for the interference frequency of any frequency band in different environments.

[0007] The present invention solves the above technical problems through the following technical solutions:

[0008] According to a first aspect of the present disclosure, there is provided a portable ultrasound device, the portable ultrasound device comprising a main body structure, and an adjustable common mode filter disposed in the main body structure;

[0009] The adjustable common mode filter comprises a variable common mode inductor component and a magnetic field generating component;

[0010] The magnetic field generating component is electrically connected to the driving power supply in the main structure, and the magnetic field generating component is used to form magnetic fields of different intensities under different driving currents;

[0011] The variable common mode inductor component is located within the coverage of the magnetic field, the input end of the variable common mode inductor component is electrically connected to the external power grid via the power interface of the main structure, and the output end of the variable common mode inductor component is electrically connected to the power supply module of the main structure;

[0012] The variable common-mode inductor component is provided with a magnetic material with a variable shape, and the variable common-mode inductor component is used to generate different inductances under the action of the magnetic field of different intensities, so as to filter the interference signal in the external power grid and power the portable ultrasonic device via the power supply module.

[0013] Preferably, the variable common mode inductor assembly comprises a magnetic component, a first inductor coil and a second inductor coil;

[0014] The interior of the magnetic part is a hollow structure, and the hollow structure is filled with the magnetic material;

[0015] The first inductor coil and the second inductor coil are symmetrically wound on two sides of the magnetic component;

[0016] The input end of the first inductor coil and the input end of the second inductor coil are both electrically connected to the external power grid, and the output end of the first inductor coil and the output end of the second inductor coil are both electrically connected to the power supply module;

[0017] The variable common mode inductor component changes the shape of the magnetic material under the action of the magnetic field of different strengths to change the inductance of the first inductor coil and the second inductor coil.

[0018] Preferably, the magnetic member comprises a magnetic ring;

[0019] and / or,

[0020] The magnetic material is a magnetic fluid;

[0021] and / or,

[0022] The first inductor coil and the second inductor coil have the same number of turns and phase, and are wound in opposite directions.

[0023] Preferably, the main structure is further provided with an adjusting element;

[0024] Two ends of the regulating element are electrically connected to the driving power supply and the magnetic field generating component respectively;

[0025] The regulating element is used to adjust the magnitude of the driving current to drive the magnetic field generating component to form the magnetic field with different intensities.

[0026] Preferably, the portable ultrasonic device further comprises an adjustment structure provided on the main structure;

[0027] The adjusting structure is used to be sleeved on the adjusting element to adjust the adjusting element.

[0028] Preferably, the adjustment structure includes an adjustment knob.

[0029] Preferably, the adjusting element comprises an adjustable resistor;

[0030] and / or,

[0031] The main structure is also provided with a current limiting element;

[0032] Two ends of the current limiting element are respectively connected to the regulating element and the magnetic field generating component;

[0033] The current limiting element is used to limit the driving current.

[0034] Preferably, the magnetic field generating assembly comprises a magnetic core and an electromagnetic coil;

[0035] The magnetic core is provided with a groove, and the electromagnetic coil is assembled in the groove;

[0036] and / or,

[0037] The adjustable common mode filter also includes a reinforced ferrite and a housing structure;

[0038] The magnetic field generating component, the variable common mode inductor component, and the enhanced ferrite are arranged in the housing structure in sequence;

[0039] The magnetic field generating assembly is electrically connected to the driving power source via a driving lead attached to the housing structure;

[0040] The current input lead and the current output lead of the variable common mode inductor assembly are attached to the housing structure to be electrically connected to the external power grid and the power supply module respectively;

[0041] The enhanced ferrite is used to enhance the magnetic field generated by the magnetic field generating component.

[0042] Preferably, the magnetic field generating component and the enhanced ferrite are disc-shaped parts of the same size.

[0043] Preferably, the portable ultrasound device further comprises a display structure;

[0044] The display structure is used to display ultrasound images;

[0045] and / or,

[0046] The main structure also includes an ultrasonic probe interface;

[0047] The ultrasound probe interface is used to connect the ultrasound probe.

[0048] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present disclosure.

[0049] The positive progressive effect of the present disclosure is that by introducing a variable common-mode inductor component in the common-mode filter that can change the common-mode inductance according to magnetic fields of different intensities, the common-mode inductance can be adjusted according to different usage scenarios, so that the portable B-ultrasound machine can adjust the common-mode inductance according to the interference frequency of any frequency band, thereby achieving the best filtering effect and realizing precise imaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 The Bode diagram of the common mode filter inductor used in the existing B-ultrasound equipment;

[0051] Figure 2 It is a schematic diagram of the structure of the portable ultrasound device disclosed in the present invention;

[0052] Figure 3 It is a schematic diagram of the structure of the adjustable common mode filter disclosed in the present invention;

[0053] Figure 4 A top view of a variable common mode inductor component disclosed herein;

[0054] Figure 5 is a side view of a variable common mode inductor component of the present disclosure;

[0055] Figure 6 It is a schematic diagram of the structure of the magnetic component in the variable common mode inductor assembly disclosed in the present invention;

[0056] Figure 7 It is a schematic diagram of the circuit structure of the adjustable common mode filter disclosed in the present invention;

[0057] Figure 8 It is a structural schematic diagram of the magnetic field generating assembly disclosed in the present invention without the electromagnetic coil assembled;

[0058] Fig. 9 It is a first structural schematic diagram of a magnetic field generating assembly of the present disclosure equipped with an electromagnetic coil;

[0059] Fig.10 This is a second structural schematic diagram of the magnetic field generating assembly of the present invention equipped with an electromagnetic coil. DETAILED DESCRIPTION

[0060] The present disclosure is further described below by way of examples, but the present disclosure is not limited to the scope of the examples.

[0061] Prefixes such as "first" and "second" are used in the embodiments of the present disclosure only to distinguish different description objects, and have no limiting effect on the position, order, priority, quantity or content of the described objects. The use of prefixes such as ordinal numbers to distinguish description objects in the embodiments of the present disclosure does not constitute a limitation on the described objects. For the statement of the described objects, please refer to the description in the context of the claims or embodiments, and no unnecessary limitation should be constituted due to the use of such prefixes. In addition, in the description of the present embodiment, unless otherwise specified, the meaning of "plurality" is two or more.

[0062] Example 1

[0063] In a specific embodiment of the present disclosure, a portable ultrasound device is provided. Figure 2-10 As shown, the portable ultrasonic device comprises a main structure 1, and an adjustable common mode filter 2 arranged in the main structure 1;

[0064] The adjustable common mode filter 2 includes a variable common mode inductor component 21 and a magnetic field generating component 22;

[0065] The magnetic field generating component 22 is electrically connected to the driving power supply in the main structure 1, and the magnetic field generating component 22 is used to form magnetic fields of different strengths under different driving currents;

[0066] The variable common mode inductor component 21 is located within the coverage of the magnetic field, the input end of the variable common mode inductor component 21 is electrically connected to the external power grid via the power interface 12 of the main structure 1, and the output end of the variable common mode inductor component 21 is electrically connected to the power supply module of the main structure 1;

[0067] The variable common-mode inductor component 21 is provided with a magnetic material of variable shape, and the variable common-mode inductor component is used to generate different inductances under the action of magnetic fields of different intensities, so as to filter interference signals in the external power grid and power the portable ultrasonic device via the power supply module.

[0068] Specifically, the variable common-mode inductor component 21 is arranged in the main structure 1 (for example, the ultrasound device host) of a portable ultrasound device (for example, a portable B-ultrasound). A power interface 12 is provided on the main structure 1 for connecting to an external power grid. A power supply module is provided in the main structure 1 for powering the entire portable ultrasound device. The input end of the variable common-mode inductor component 21 is connected to the external power grid via the power interface 12, and the output end is connected to the power supply module, so that the variable common-mode inductor component 21 is used to perform interference filtering on the external power grid, and the pure current after filtering is transmitted to the power supply module to power the entire portable ultrasound device.

[0069] In order to adjust the common-mode inductance of the variable common-mode inductor component 21 to achieve the best filtering effect for different interference frequencies, the magnetic field generating component 22 is electrically connected to the driving power supply (for example, 5V (volts)) in the main structure 1 to form a magnetic field when powered on, and the variable common-mode inductor component 21 is set within the coverage range of the magnetic field, thereby adjusting the driving current flowing through the magnetic field generating component 22 to change the magnetic field strength formed by the magnetic field generating component 22, and then changing the inductance of the variable common-mode inductor component 21 to filter the grid current, so that the portable B-ultrasound machine can adjust the common-mode inductance according to the interference frequency of any frequency band to achieve the best filtering effect and realize precise imaging.

[0070] This specific implementation introduces a variable common-mode inductor component into the common-mode filter that can change the common-mode inductance according to magnetic fields of different intensities, so as to adjust the common-mode inductance according to different usage scenarios. This allows the portable B-ultrasound machine to adjust the common-mode inductance according to the interference frequency of any frequency band, thereby achieving the best filtering effect and realizing precise imaging.

[0071] In a specific embodiment, Figure 2 As shown, the portable ultrasound device further includes a display structure 3, and an ultrasound probe interface 11 is also provided on the main structure 1;

[0072] The display structure 3 is used to display ultrasound images;

[0073] The ultrasound probe interface 11 is used to connect an ultrasound probe.

[0074] Specifically, the display structure 3 can be integrally arranged on the main structure 1, or can be detachably arranged on the main structure 1, for displaying ultrasound images. The main structure 1 is provided with an ultrasound probe interface 11 for connecting an ultrasound probe.

[0075] Of course, the portable ultrasound device also includes an ultrasound probe, which is not limited in this embodiment.

[0076] In a specific embodiment, Figure 4-6 As shown, the variable common mode inductor assembly 21 includes a magnetic component 211, a first inductor coil 212 and a second inductor coil 213;

[0077] The interior of the magnetic member 211 is a hollow structure, and the hollow structure is filled with magnetic material;

[0078] The first inductor coil 212 and the second inductor coil 213 are symmetrically wound on two sides of the magnetic member 211;

[0079] The input end of the first inductor 212 and the input end of the second inductor 213 are both electrically connected to the external power grid, and the output end of the first inductor 212 and the output end of the second inductor 213 are both electrically connected to the power supply module;

[0080] The variable common mode inductor component 21 changes the shape of the magnetic material under the action of magnetic fields of different strengths, so as to change the inductance of the first inductor coil 212 and the second inductor coil 213 .

[0081] Specifically, the variable common-mode inductor component 21 includes a first inductor coil 212, a second inductor coil 213 and a hollow magnetic part 211, such as a hollow magnetic ring, wherein the first inductor coil 212 and the second inductor coil 213 are symmetrically wound on both sides of the magnetic ring with the same number of turns and phase and different winding directions, wherein the input ends of the first inductor coil 212 and the second inductor coil 213 are respectively connected to the live wire (INL) and the neutral wire (INN) of the external power grid via the power interface 12, and the output ends OUTL and OUTN are both connected to the power supply module. After the grid current is connected through INL and INN, it is filtered by the common-mode inductor through the first inductor coil 212 and the second inductor coil 213, and the filtered pure current is output by OUTL and OUTN, and is transmitted to the portable ultrasonic device for use via the power supply module.

[0082] At the same time, the hollow structure of the magnetic ring is filled with deformable magnetic materials, such as magnetic fluid. Under the action of magnetic fields of different intensities, the state of the magnetic fluid is different, and the magnetic flux is also different. Taking the SY210 specification magnetic fluid as an example, the magnetic flux after being completely solidified by the magnetic field is 7 times the magnetic flux in the completely liquid state without the magnetic field.

[0083] Therefore, by adjusting the driving current of the magnetic field generating component 22, the magnetic field strength formed by the magnetic field generating component 22 is changed, thereby changing the state of the magnetic fluid inside the magnetic ring, so as to change the inductance of the first inductor coil 212 and the second inductor coil 213 after winding, and obtain the common-mode inductance with the best filtering effect corresponding to the interference frequency of any frequency band.

[0084] In a specific embodiment, Figure 7 As shown, the main structure 1 is also provided with an adjusting element 4 and a current limiting element 5;

[0085] The magnetic field generating component 22, the current limiting element 5, and the regulating element 4 are sequentially connected to the driving power supply;

[0086] The regulating element 4 is used to adjust the magnitude of the driving current to drive the magnetic field generating component 22 to form magnetic fields of different intensities;

[0087] The current limiting element 5 is used to limit the driving current.

[0088] Specifically, the regulating element 4 may be an adjustable resistor, and the current limiting element 5 may be a fixed resistor. The magnetic field generating component 22 is electrically connected to the driving power supply through the driving lead K+, and the driving lead K- is grounded. Since the power consumption of the magnetic field generating component 22 is extremely small, an adjustable resistor can be directly set on the driving lead, and the adjustable resistor is used to perform resistance divider adjustment to change the size of the driving current without setting up a separate regulator, and a fixed resistor is set on the driving lead to avoid a large current phenomenon caused by a short circuit when the adjustable resistor is over-adjusted.

[0089] In a specific embodiment, Figure 2 As shown, the portable ultrasonic device further includes an adjustment structure 6 disposed on the main structure 1;

[0090] The adjusting structure 6 is used to be sleeved on the adjusting element 4 to adjust the adjusting element 4 .

[0091] Specifically, the adjustable resistor may be sleeved with the adjustment structure 6, and the adjustment structure 6 may be arranged on the main structure 1, so as to change the resistance value of the adjustable resistor through the adjustment structure 6, thereby changing the magnitude of the driving current. For example, the adjustable resistor is a uniaxially rotatable adjustable resistor, and the adjustment knob is sleeved on the uniaxially rotatable adjustable resistor. When the adjustment knob is rotated, the resistance value of the uniaxially rotatable adjustable resistor also changes.

[0092] When in use, the doctor arrives in a new environment, first turns on the portable ultrasound device, enters the working mode, scans with the ultrasound probe and observes the image interference through the display structure 3, and at the same time turns the adjustment knob left and right until the interference disappears or is at the minimum interference state. In this way, the adjustment knob can be manually rotated in different use environments to adjust the common mode inductance according to the interference frequency of any frequency band to achieve the best filtering effect and realize accurate imaging.

[0093] In a specific embodiment, Figure 3 , 8-10, the magnetic field generating assembly 22 includes a magnetic core 221 and an electromagnetic coil 222; the adjustable common mode filter 2 also includes a reinforced ferrite 25 and a shell structure 26;

[0094] The magnetic core 221 is provided with a groove, and the electromagnetic coil 222 is assembled in the groove;

[0095] The magnetic field generating component 22, the variable common mode inductor component 21, and the enhanced ferrite 25 are sequentially arranged in the housing structure 26;

[0096] The magnetic field generating assembly 22 is electrically connected to the driving power source via a driving lead attached to the housing structure 26;

[0097] The current input lead and the current output lead of the variable common mode inductor component 21 are attached to the housing structure 26 to be electrically connected to the external power supply and the power supply module respectively;

[0098] The reinforcing ferrite 25 is used to enhance the magnetic field generated by the magnetic field generating component 22 .

[0099] Specifically, a groove can be opened on the magnetic core 221, and the electromagnetic coil 222 can be assembled in the groove to form the magnetic field generating component 22. An enhanced ferrite 25 is arranged at a relative position of the magnetic field generating component 22 to passively enhance the magnetic field generated by the magnetic field generating component 22, wherein the enhanced ferrite 25 is made of ferrite and is a disc-shaped part with the same size as the magnetic field generating component 22.

[0100] By separately arranging the magnetic field generating component 22 and the enhanced ferrite 25 on both sides of the variable common-mode inductor component 21 and arranging them in the shell structure 26, the magnetic field generating component 22 is electrically connected to the driving power supply through the driving leads K+ / K- attached to the shell structure 26, the current input leads INL and INN (abbreviated as INN / L) of the variable common-mode inductor component 21 are attached to the shell structure 26 and electrically connected to the external power supply via the power interface 12, and the current output leads OUTL and OUTN (abbreviated as OUTN / L) of the variable common-mode inductor component 21 are also attached to the shell structure 26 and electrically connected to the power supply module.

[0101] This embodiment introduces a variable common-mode inductor component into the common-mode filter that can change the common-mode inductance according to magnetic fields of different intensities, so as to adjust the common-mode inductance according to different usage scenarios, so that the portable B-ultrasound machine can adjust the common-mode inductance according to the interference frequency of any frequency band to achieve the best filtering effect and realize accurate imaging.

[0102] Although the specific embodiments of the present disclosure are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present disclosure is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present disclosure, but these changes and modifications all fall within the protection scope of the present disclosure.

Claims

1. A portable ultrasound device, characterized in that: The portable ultrasonic device comprises a main body structure, and an adjustable common mode filter arranged in the main body structure; The adjustable common mode filter comprises a variable common mode inductor component and a magnetic field generating component; The magnetic field generating component is electrically connected to the driving power supply in the main structure, and the magnetic field generating component is used to form magnetic fields of different intensities under different driving currents; The variable common mode inductor component is located within the coverage of the magnetic field, the input end of the variable common mode inductor component is electrically connected to the external power grid via the power interface of the main structure, and the output end of the variable common mode inductor component is electrically connected to the power supply module in the main structure; The variable common-mode inductor component is provided with a magnetic material with a variable shape, and the variable common-mode inductor component is used to generate different inductances under the action of the magnetic field of different intensities, so as to filter the interference signal in the external power grid and power the portable ultrasonic device via the power supply module.

2. The portable ultrasound device according to claim 1, characterized in that: The variable common mode inductor assembly includes a magnetic component, a first inductor coil and a second inductor coil; The interior of the magnetic part is a hollow structure, and the hollow structure is filled with the magnetic material; The first inductor coil and the second inductor coil are symmetrically wound on two sides of the magnetic component; The input end of the first inductor coil and the input end of the second inductor coil are both electrically connected to the external power grid, and the output end of the first inductor coil and the output end of the second inductor coil are both electrically connected to the power supply module; The variable common mode inductor component changes the shape of the magnetic material under the action of the magnetic field of different strengths to change the inductance of the first inductor coil and the second inductor coil.

3. The portable ultrasound device according to claim 2, characterized in that: The magnetic member comprises a magnetic ring; and / or, The magnetic material is a magnetic fluid; and / or, The first inductor coil and the second inductor coil have the same number of turns and phase, and are wound in opposite directions.

4. The portable ultrasound device according to claim 1, characterized in that: The main structure is also provided with an adjusting element; Two ends of the regulating element are electrically connected to the driving power supply and the magnetic field generating component respectively; The regulating element is used to adjust the magnitude of the driving current to drive the magnetic field generating component to form the magnetic field with different intensities.

5. The portable ultrasound device according to claim 4, characterized in that: The portable ultrasonic device also includes an adjustment structure disposed on the main structure; The adjusting structure is used to be sleeved on the adjusting element to adjust the adjusting element.

6. The portable ultrasound device according to claim 5, characterized in that: The adjustment structure includes an adjustment knob.

7. The portable ultrasound device according to claim 4, characterized in that: The adjusting element includes an adjustable resistor; and / or, The main structure is also provided with a current limiting element; Two ends of the current limiting element are respectively connected to the regulating element and the magnetic field generating component; The current limiting element is used to limit the driving current.

8. The portable ultrasound device according to claim 1, characterized in that: The magnetic field generating assembly comprises a magnetic core and an electromagnetic coil; The magnetic core is provided with a groove, and the electromagnetic coil is assembled in the groove; and / or, The adjustable common mode filter also includes a reinforced ferrite and a housing structure; The magnetic field generating component, the variable common mode inductor component, and the enhanced ferrite are arranged in the housing structure in sequence; The magnetic field generating assembly is electrically connected to the driving power source via a driving lead attached to the housing structure; The current input lead and the current output lead of the variable common mode inductor assembly are attached to the housing structure to be electrically connected to the external power grid and the power supply module respectively; The enhanced ferrite is used to enhance the magnetic field generated by the magnetic field generating component.

9. The adjustable common mode filter according to claim 8, characterized in that: The magnetic field generating component and the enhanced ferrite are disc-shaped parts with the same size.

10. The portable ultrasound device according to any one of claims 1 to 9, characterized in that: The portable ultrasound device also includes a display structure; The display structure is used to display ultrasound images; and / or, The main structure also includes an ultrasonic probe interface; The ultrasound probe interface is used to connect the ultrasound probe.

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