Portable ultrasonic device

Abstract

The utility model 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 instruments, in particular to a portable ultrasonic device. BACKGROUND

[0002] The ultrasonic transceiver is the core component of the B-ultrasound device, which works under a weak current signal (the echo signal is generally between several microvolts and several tens of millivolts). To accurately collect signals under such a weak current signal, external interference must be strictly avoided. The external interference is mainly introduced from the power supply end of the power grid. Since various electrical devices are connected in the same power grid, such as motors, light switches, chopper electrical appliances, computers, etc., these electrical devices will generate a large amount of interference signals when working or switching, and spread to the power grid through the power grid line. Other electrical devices in the same power grid will be affected differently according to the distance from various interference sources. It is particularly important to block the interference of the power grid to the B-ultrasound device.

[0003] In order to block the interference from the power grid, the B-ultrasound device adopts various ways, such as wave traps, differential mode coils, common mode coils, etc. The most difficult to solve is the common mode interference. The reason is that the common mode filter inductance of the common mode coil wound in the same magnetic ring can only produce the best filtering effect on the interference frequency of a specific frequency band. When the interference frequency changes, the original common mode inductance cannot meet the interference filtering requirements. In the common mode filter inductance wound in the same magnetic material (the same brand of the same series uses the same magnetic material), the larger the inductance, the more the frequency of the best filtering effect shifts to low frequency, and vice versa. As shown in FIG. 1, the impedance of four different inductance magnetic materials at different frequencies, wherein the higher the impedance, the better the filtering effect. Figure 1

[0004] The common mode interference has little effect on the desktop B-ultrasound machine in the hospital. This is because once the desktop machine is installed in the B-ultrasound room, it is rarely moved, and the adjusted filter characteristics can well maintain the filtering effect. However, since the portable B-ultrasound machine often needs to work in different environments, it is carried by a medical vehicle in various interference situations, different power grids, different distances from interference sources, and even in extreme environments such as earthquakes and wars. This makes the portable B-ultrasound machine always vulnerable to common mode interference.

[0005] In order to solve this problem in the prior art, several different "filter type power grid lines" are configured for the portable B-ultrasound machine. Different inductance filter boxes are designed in the middle of the power grid line to adapt to different environments. However, due to the need to carry multiple special power grid lines, the device is heavy, increasing the difficulty of carrying, and only having fixed inductance options, it cannot cover all frequency band interference, and still cannot achieve the best filtering effect, resulting in inaccurate imaging. ​The utility model discloses

[0006] The technical problem to be solved by the present disclosure is to overcome the defect that the portable B-ultrasound machine cannot produce optimal filtering effect on interference frequency of any frequency band in different environments in the prior art, and provide a portable ultrasonic equipment.

[0007] The present disclosure solves the above technical problems by the following technical solutions:

[0008] According to a first aspect of the present disclosure, a portable ultrasonic equipment is provided, comprising a main body structure, and an adjustable common mode filter arranged in the main body structure.

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

[0010] The magnetic field generating component is electrically connected with a driving power supply in the main body structure, and is used to form a magnetic field with different intensities under different driving currents.

[0011] The variable common mode inductance component is located in the coverage range of the magnetic field, the input end of the variable common mode inductance component is electrically connected with an external power grid via a power supply interface of the main body structure, and the output end of the variable common mode inductance component is electrically connected with a power supply module of the main body structure.

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

[0013] Preferably, the variable common mode inductance component comprises a magnetic piece, a first inductance coil and a second inductance coil.

[0014] The inside of the magnetic piece is a hollow structure, and the hollow structure is filled with the magnetic material.

[0015] The first inductance coil and the second inductance coil are symmetrically wound on both sides of the magnetic piece.

[0016] The input end of the first inductance coil and the input end of the second inductance coil are electrically connected with the external power grid, and the output end of the first inductance coil and the output end of the second inductance coil are electrically connected with the power supply module.

[0017] The variable common mode inductance component changes the morphology of the magnetic material under the action of the magnetic field with different intensities, so as to change the inductance of the first inductance coil and the second inductance 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 number of turns and the phase of the first inductor coil and the second inductor coil are the same, and the winding direction is opposite.

[0023] Preferably, the main body structure further comprises an adjusting element.

[0024] The two ends of the adjusting element are respectively connected with the driving power supply and the magnetic field generating assembly.

[0025] The adjusting element is used to adjust the size of the driving current to drive the magnetic field generating assembly to form a magnetic field with different intensities.

[0026] Preferably, the portable ultrasonic device further comprises an adjusting structure arranged on the main body structure.

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

[0028] Preferably, the adjusting structure comprises an adjusting knob.

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

[0030] and / or,

[0031] The main body structure further comprises a current limiting element.

[0032] The two ends of the current limiting element are respectively connected with the adjusting element and the magnetic field generating assembly.

[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 further comprises an enhanced ferrite and a shell structure.

[0038] The magnetic field generating assembly, the variable common mode inductor assembly, and the enhanced ferrite are sequentially arranged in the shell structure.

[0039] The magnetic field generating component is electrically connected with the driving power source through a driving lead wire attached to the shell structure;

[0040] The current input lead wire and the current output lead wire of the variable common mode inductance component are attached to the shell structure to be electrically connected with 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 circular sheet-shaped parts of the same size.

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

[0044] The display structure is used to display ultrasonic images.

[0045] And / or,

[0046] The main body structure further comprises an ultrasonic probe interface.

[0047] The ultrasonic probe interface is used to connect an ultrasonic probe.

[0048] On the basis of common sense in the art, the above-mentioned preferred conditions can be combined arbitrarily, that is, the preferred examples of the present disclosure are obtained.

[0049] The positive progress effect of the present disclosure is that by introducing a variable common mode inductance component which can change the common mode inductance according to different intensity of magnetic field in the common mode filter, the common mode inductance is adjusted according to different use scenarios, so that the portable B-ultrasound machine can adjust the common mode inductance according to the interference frequency of any frequency band, achieve the best filtering effect, and realize accurate imaging. BRIEF DESCRIPTION OF DRAWINGS

[0050] Figure 1 The Bode plot of the common mode filter inductance used by the existing B-ultrasound equipment;

[0051] Figure 2 The structure diagram of the portable ultrasonic device of the present disclosure;

[0052] Figure 3 The structure diagram of the adjustable common mode filter of the present disclosure;

[0053] Figure 4 The top view of the variable common mode inductance component of the present disclosure;

[0054] Figure 5 The side view of the variable common mode inductance component of the present disclosure;

[0055] Figure 6A schematic diagram of a magnetic piece structure in a variable common mode inductance component of the present disclosure;

[0056] Figure 7 A schematic diagram of a circuit structure of an adjustable common mode filter of the present disclosure;

[0057] Figure 8 A schematic diagram of a structure of an un-assembled electromagnetic coil of a magnetic field generating component of the present disclosure;

[0058] Figure 9 A first schematic diagram of a structure of an assembled electromagnetic coil of a magnetic field generating component of the present disclosure;

[0059] Figure 10 A second schematic diagram of a structure of an assembled electromagnetic coil of a magnetic field generating component of the present disclosure. DETAILED DESCRIPTION

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

[0061] In the embodiments of the present disclosure, the prefix words such as "first", "second" are merely used 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 ordinal words such as ordinal words in the embodiments of the present disclosure does not constitute a limitation on the described objects, and the description of the described objects should be seen in the context of the claims or embodiments, and should not constitute an unnecessary limitation because of the use of such prefix words. In addition, in the description of the embodiments, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0062] Embodiment 1

[0063] In a specific embodiment of the present disclosure, a portable ultrasonic device is provided, as shown in the figure, which includes a main body structure 1, and an adjustable common mode filter 2 arranged in the main body structure 1; Figures 2-10

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

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

[0066] The variable common mode inductance component 21 is located in the coverage range of the magnetic field, the input end of the variable common mode inductance component 21 is electrically connected with an external power grid via a power supply interface 12 of the main body structure 1, and the output end of the variable common mode inductance component 21 is electrically connected with a power supply module of the main body structure 1;

[0067] ​The variable common mode inductance component 21 is provided with deformable magnetic material, and is used to generate different inductance under the action of magnetic fields of 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.

[0068] Specifically, the variable common mode inductance component 21 is arranged in a main body structure 1 (for example, an ultrasonic equipment host) of the portable ultrasonic equipment (for example, a portable B-ultrasound machine), the main body structure 1 is provided with a power supply interface 12 for connecting with the external power grid, and the main body structure 1 is provided with a power supply module for supplying power to the entire portable ultrasonic equipment. The input end of the variable common mode inductance component 21 is connected with the external power grid through the power supply interface 12, and the output end is connected with the power supply module, so as to filter the interference of the external power grid by using the variable common mode inductance component 21, and the pure current after filtering is transmitted to the power supply module to supply power to the entire portable ultrasonic equipment.

[0069] In order to adjust the common mode inductance of the variable common mode inductance component 21 to achieve the best filtering effect of different interference frequencies, the magnetic field generating component 22 is electrically connected with a driving power supply (for example, 5V) in the main body structure 1 to form a magnetic field under the condition of power-on, and the variable common mode inductance component 21 is arranged in the coverage range of the magnetic field. Therefore, by adjusting the driving current flowing through the magnetic field generating component 22 to change the magnetic field intensity formed by the magnetic field generating component 22, the inductance of the variable common mode inductance component 21 is changed to filter the power grid current, so that the portable B-ultrasound machine can adjust the common mode inductance according to the interference frequency of any frequency band, achieve the best filtering effect, and realize accurate imaging.

[0070] The embodiment introduces the variable common mode inductance component which can change the common mode inductance according to the magnetic field of different intensities in the common mode filter, so as to adjust the common mode inductance according to different use scenarios, so that the portable B-ultrasound machine can adjust the common mode inductance according to the interference frequency of any frequency band, achieve the best filtering effect, and realize accurate imaging.

[0071] In one embodiment, as shown in Figure 2 The portable ultrasonic equipment further includes a display structure 3, and the main body structure 1 is further provided with an ultrasonic probe interface 11.

[0072] The display structure 3 is used to display an ultrasonic image.

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

[0074] Specifically, the display structure 3 can be integrally arranged on the main body structure 1, or can be detachably arranged on the main body structure 1, and is used to display an ultrasonic image. The main body structure 1 is provided with the ultrasonic probe interface 11 to connect the ultrasonic probe.

[0075] Of course, the portable ultrasonic device also includes an ultrasonic probe, and the present embodiment is not limited thereto.

[0076] In one specific embodiment, as shown in Figures 4-6 The variable common-mode inductance component 21 includes a magnetic piece 211, a first inductor coil 212, and a second inductor coil 213.

[0077] The magnetic piece 211 is hollow inside and filled with a magnetic material.

[0078] The first inductor coil 212 and the second inductor coil 213 are symmetrically wound on both sides of the magnetic piece 211.

[0079] The input ends of the first inductor coil 212 and the second inductor coil 213 are electrically connected to an external power grid, and the output ends of the first inductor coil 212 and the second inductor coil 213 are electrically connected to a power supply module.

[0080] The variable common-mode inductance component 21 changes the morphology of the magnetic material under the action of magnetic fields of different intensities to change the inductance of the first inductor coil 212 and the second inductor coil 213.

[0081] Specifically, the variable common-mode inductance component 21 includes a first inductor coil 212, a second inductor coil 213, and a hollow magnetic piece 211, such as a hollow magnetic ring, and 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, different winding directions, wherein the input ends of the first inductor coil 212 and the second inductor coil 213 are connected to the live wire (INL) and the neutral wire (INN) of the external power grid via the power supply interface 12, and the output ends OUTL, OUTN are connected to the power supply module. After the grid current is accessed via INL, INN, common-mode inductance filtering is performed by the first inductor coil 212 and the second inductor coil 213, and the filtered pure current is output by OUTL, OUTN and delivered to the portable ultrasonic device for use via the power supply module.

[0082] Meanwhile, the hollow structure of the magnetic ring is filled with a deformable magnetic material, such as magnetic fluid, and under the action of magnetic fields of different intensities, the state of the magnetic fluid is different, and the magnetic flux is also different. For example, the magnetic flux of the SY210 specification of magnetic fluid after complete magnetic field solidification is 7 times that of the completely liquid state without magnetic field.

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

[0084] In a specific embodiment, as shown in Figure 7 The main body structure 1 is also provided with an adjusting element 4 and a current limiting element 5.

[0085] The magnetic field generating assembly 22, the current limiting element 5 and the adjusting element 4 are sequentially connected to the driving power supply.

[0086] The adjusting element 4 is used to adjust the size of the driving current to drive the magnetic field generating assembly 22 to form a magnetic field with different intensity.

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

[0088] Specifically, the adjusting element 4 can be an adjustable resistor, and the current limiting element 5 can be a fixed resistor. The magnetic field generating assembly 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 assembly 22 is small, an adjustable resistor can be directly arranged on the driving lead to adjust the driving current by resistance voltage division, and a fixed resistor is arranged on the driving lead to avoid the large current caused by short circuit when the adjustable resistor is over-adjusted.

[0089] In a specific embodiment, as shown in Figure 2 The portable ultrasonic device also comprises an adjusting structure 6 arranged on the main body 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 adjusting structure 6 can be sleeved on the adjustable resistor, and the adjusting structure 6 is arranged on the main body structure 1 to change the resistance value of the adjustable resistor through the adjusting structure 6, thereby changing the size of the driving current. For example, the adjustable resistor is a single-axis rotary adjustable resistor, and the adjusting knob is sleeved on the single-axis rotary adjustable resistor. When the adjusting knob is rotated, the resistance value of the single-axis rotary adjustable resistor also changes.

[0092] In use, when a doctor arrives at a new environment, the portable ultrasonic device is powered on to enter the working mode. The doctor uses the ultrasonic probe to scan and observe the image interference through the display structure 3, and rotates the adjusting knob left and right until the interference disappears or is in the minimum state. In this way, the doctor can manually rotate the adjusting knob in different use environments to adjust the common mode inductance according to the interference frequency of any frequency band, so as to achieve the best filtering effect and realize accurate imaging.

[0093] In a specific embodiment, as shown in Figure 3 , 8As shown in FIG. 10, the magnetic field generating assembly 22 comprises a magnetic core 221 and an electromagnetic coil 222; the adjustable common mode filter 2 further comprises 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 assembly 22, the variable common mode inductor assembly 21 and the reinforced ferrite 25 are sequentially arranged in the shell structure 26;

[0096] The magnetic field generating assembly 22 is electrically connected with a driving power source through a driving lead wire attached to the shell structure 26;

[0097] The current input lead wire and the current output lead wire of the variable common mode inductor assembly 21 are attached to the shell structure 26 to be electrically connected with an external power source and a power supply module respectively;

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

[0099] Specifically, a groove can be formed on the magnetic core 221, and the electromagnetic coil 222 is assembled in the groove to form the magnetic field generating assembly 22. The reinforced ferrite 25 is arranged at the opposite position of the magnetic field generating assembly 22 to passively enhance the magnetic field generated by the magnetic field generating assembly 22. The reinforced ferrite 25 is made of ferrite, and the reinforced ferrite 25 is a round sheet-shaped part with the same size as the magnetic field generating assembly 22.

[0100] By arranging the magnetic field generating assembly 22 and the reinforced ferrite 25 on both sides of the variable common mode inductor assembly 21 in the shell structure 26, the magnetic field generating assembly 22 is electrically connected with a driving power source through a driving lead wire K+ / K- attached to the shell structure 26, the current input lead wire INL and INN (referred to as INN / L) of the variable common mode inductor assembly 21 are attached to the shell structure 26 and are electrically connected with an external power source through a power source interface 12, and the current output lead wire OUTL and OUTN (referred to as OUTN / L) of the variable common mode inductor assembly 21 are also attached to the shell structure 26 and are electrically connected with a power supply module.

[0101] The embodiment introduces a variable common mode inductor assembly which can change the common mode inductance according to different intensity of magnetic field in the common mode filter, so as to adjust the common mode inductance according to different use scenarios, so that the portable B-ultrasound machine can adjust the common mode inductance according to the interference frequency of any frequency band, 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 can make various changes or modifications to the embodiments without departing from the principles and essence of the present disclosure, and these changes and modifications all fall within the protection scope of the present disclosure.

Claims

1. A portable ultrasound apparatus, characterized by comprising: 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 inductance component and a magnetic field generating component; The magnetic field generating component is electrically connected with a driving power supply in the main body structure, and is used for forming magnetic fields with different intensities under different driving currents; The variable common-mode inductance component is located in the coverage range of the magnetic field, an input end of the variable common-mode inductance component is electrically connected with an external power grid via a power supply interface of the main body structure, and an output end of the variable common-mode inductance component is electrically connected with a power supply module in the main body structure; The variable common-mode inductance component is provided with a deformable magnetic material, and is used for generating different inductance under the action of the magnetic field with different intensities, filtering interference signals in the external power grid, and supplying power for the portable ultrasonic equipment via the power supply module.

2. The portable ultrasound device of claim 1, wherein, The variable common-mode inductance component comprises a magnetic piece, a first inductance coil and a second inductance coil; The magnetic piece is internally provided with a hollow structure, and the hollow structure is filled with the magnetic material; The first inductance coil and the second inductance coil are symmetrically wound on two sides of the magnetic piece; Input ends of the first inductance coil and the second inductance coil are electrically connected with the external power grid, and output ends of the first inductance coil and the second inductance coil are electrically connected with the power supply module; The variable common-mode inductance component changes the form of the magnetic material under the action of the magnetic field with different intensities, so as to change the inductance of the first inductance coil and the second inductance coil.

3. The portable ultrasound device of claim 2, wherein, The magnetic piece comprises a magnetic ring; And / or, The magnetic material is a magnetic fluid; And / or, The number of turns and the phase of the first inductance coil and the second inductance coil are same, and the winding directions are opposite.

4. The portable ultrasound device of claim 1, wherein, The main body structure is further provided with an adjusting element; Two ends of the adjusting element are electrically connected with the driving power supply and the magnetic field generating component respectively; The adjusting element is used for adjusting the size of the driving current, so as to drive the magnetic field generating component to form the magnetic field with different intensities.

5. The portable ultrasound device of claim 4, wherein, The portable ultrasonic equipment further comprises an adjusting structure arranged on the main body structure; The adjusting structure is used for sleeving on the adjusting element, so as to adjust the adjusting element.

6. The portable ultrasound device of claim 5, wherein, The adjusting structure comprises an adjusting knob.

7. The portable ultrasound device of claim 4, wherein, The adjusting element comprises an adjustable resistor; And / or, The main body structure is further provided with a current limiting element; Two ends of the current limiting element are connected with the adjusting element and the magnetic field generating component respectively; The current limiting element is used for limiting the driving current.

8. The portable ultrasound device of claim 1, wherein, The magnetic field generating component 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 further comprises an enhanced ferrite and a shell structure; The magnetic field generating component, the variable common-mode inductance component and the enhanced ferrite are sequentially arranged in the shell structure; The magnetic field generating component is electrically connected with the driving power supply through driving lead wires attached on the shell structure; The current input lead and the current output lead of the variable common-mode inductance component are attached on the shell structure to be electrically connected with 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 portable ultrasound device of claim 8, wherein, The magnetic field generating component and the enhanced ferrite are circular sheet-shaped parts with the same size.

10. The portable ultrasound device of any of claims 1-9, wherein, The portable ultrasonic equipment further comprises a display structure; The display structure is used to display ultrasonic images; And / or, The main body structure further comprises an ultrasonic probe interface; The ultrasonic probe interface is used to connect an ultrasonic probe.

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