A breast CBCT device for breast tomography

Abstract

The breast CBCT device for breast tomography comprises a device base horizontally placed on the bottom surface, a device support vertically placed and fixedly assembled above the device base, a vertical rail embeddedly assembled in the right side plane of the device support, a fixing assembly slidably assembled on the vertical rail, a first scanning assembly slidably assembled in the middle part of the fixing assembly, a breast compression assembly horizontally placed above the right side of the fixing assembly and slidably assembled in the middle part of the fixing assembly, and a second scanning assembly fixedly assembled on the fixing assembly.

Description

Technical Field

[0001] This invention relates to the field of breast computed tomography (CT), and more specifically to a breast CBCT device for breast computed tomography. Background Technology

[0002] CBCT is short for Cone Beam CT. As the name suggests, it is a cone-beam computed tomography (CBCT) imaging system. Its principle is that an X-ray generator uses a relatively low dose of radiation (typically around 10 mA tube current) to perform circular DR (digital radiography) around the subject. Then, the data obtained from the intersection of multiple (180-360 times, depending on the product) digital imaging sessions around the subject is reconstructed in a computer to obtain a three-dimensional image.

[0003] In breast computed tomography (CT) scans, CBCT devices can accurately scan three-dimensional images of the inside of the breast, thus achieving better examination results. However, existing devices often use two sets of compression plates to clamp the patient's breasts and then perform CT scans through the scanner above. Due to distance and angle, the breast area directly below the scanner and the area between the two breasts are usually not scanned in detail, requiring the patient to undergo multiple scans to compensate for the deficiencies. This method is not only time-consuming and laborious, but also causes unnecessary damage to the patient's body.

[0004] Therefore, it is necessary to provide a breast CBCT device for breast computed tomography to solve the above problems. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: a breast CBCT device for breast computed tomography, comprising:

[0006] The device base is placed horizontally on the bottom surface;

[0007] The device support is placed vertically and fixedly mounted above the device base, with a vertical track embedded in its right side plane;

[0008] The fixed component is slidably mounted on the vertical track;

[0009] The first scanning component is slidably assembled in the middle of the fixed component;

[0010] The breast compression component is horizontally positioned above the right side of the fixation component and is slidably fitted in the middle of the fixation component;

[0011] The second scanning component is fixedly mounted on the fixed component.

[0012] Furthermore, preferably, the fixing component includes:

[0013] Electric slider one, slidably mounted on the vertical track, with a fixed frame fixedly mounted on its right side, and a breast support plate fixedly mounted on the right side of the fixed frame;

[0014] An embedded guide rail is vertically embedded and fixed at the center of the right side of the mounting bracket.

[0015] Furthermore, preferably, the first scanning component includes:

[0016] A sliding block is placed directly above the electric slider and is slidably mounted on an embedded guide rail;

[0017] The synchronous drive component is placed inside the fixed frame and fixedly assembled on the inner walls at both the front and rear ends of the fixed frame;

[0018] The first scanner is fixedly mounted on the right side of the sliding block.

[0019] Furthermore, preferably, the synchronization drive component includes:

[0020] A fixed shaft is fixedly mounted on the inner walls of the front and rear ends of the fixed frame, on which a first gear and a second gear are coaxially rotatably mounted.

[0021] The first rack is set at a right angle, with the lower toothless section fixedly mounted on the sliding block, and the upper rack section meshing with the second gear;

[0022] The second rack meshes with the first gear, and its right side is fixedly mounted on the electric slider two.

[0023] Furthermore, as a preferred embodiment, the transmission ratio between the first gear and the second gear is 2, and the two sets of gears are relatively fixed to each other, thereby ensuring their synchronization during movement.

[0024] Furthermore, preferably, the breast compression component includes:

[0025] The second electric slider is slidably mounted on the embedded guide rail, and a support frame is fixedly connected to its right side.

[0026] Two sets of Z-shaped brackets are symmetrically arranged and fixedly assembled on the front and rear planes of the receiving frame, respectively.

[0027] The chest binding components are symmetrically arranged in two sets, which are respectively fixedly assembled on the right side plane of the fixing frame;

[0028] The pressure plate is fixed to the plane at the lower right end of the receiving frame with horizontal bolts.

[0029] Furthermore, preferably, the chest binding assembly includes:

[0030] The sealed connecting tube is fixedly mounted on the fixed frame on its left side by two sets of fixing clamps. The first piston rod is slidably mounted on the vertical section of its left side, and the lower end of the first piston rod is fixed on the Z-shaped bracket. The second piston rod is slidably mounted on the horizontal section of its right side, and the other end of the second piston rod is slidably fixed on the extension shaft on the left side of the chest binder.

[0031] Furthermore, as a preferred embodiment, both ends of the chest binder are provided with an extension shaft, and a chest band that can undergo elastic deformation is fixed in the middle. The lower right end of the extension shaft is coaxially rotatably fitted into the groove on the right side of the breast support plate, while the lower left end is slidably fitted into the straight groove on the left side of the breast support plate. The lower end plane of the chest binder coincides with the upper end plane of the breast support plate. The upper end of the compression plate is provided with a through groove corresponding to the breast support plate, and the groove allows the chest binder to pass freely through the compression plate.

[0032] Furthermore, preferably, the second scanning component includes:

[0033] The circular track has two sets of symmetrically arranged fixed connecting rods fixed at its upper inner side. The other ends of the two sets of fixed connecting rods are fixedly assembled to the upper end of the sliding block. The lower inner side of the track has two sets of symmetrically arranged spring rods rotatably assembled to its lower inner side. The other ends of the two sets of spring rods are rotatably assembled to the lower end of the electric slider.

[0034] Furthermore, as a preferred embodiment, an electric slider three is coaxially rotatably mounted on the outer side of the annular track, a receiving bracket is fixedly mounted on the right end of the electric slider three, and a second scanner is fixedly mounted on the lower end of the receiving bracket.

[0035] Compared with the prior art, the present invention provides a breast CBCT device for breast computed tomography, which has the following advantages:

[0036] In this invention, the position of the breast support plate is adjusted by an electric slider to facilitate scanning for subjects of different heights. After the subject places their breast on the breast support plate, the breast compression component is activated, causing the compression plate to continuously press down until a certain degree of compression is achieved. Then, the compression stops, and the second scanning component is activated to rotate along a circular track while performing a comprehensive scan of the subject's breast, ensuring scanning accuracy. Simultaneously, during the downward pressing of the breast compression component, one side of the chest binding component moves from its initial position to both sides, ensuring a certain distance between the two breasts. This allows the first scanning component to supplement the scanning blind spots of the second scanning component, maximizing the accuracy of the scanning results. Furthermore, during the downward pressing of the breast compression component, a synchronous drive component adjusts the relative positions of the first and second scanning components, ensuring that both remain centered on the subject's breast, thus guaranteeing the same scanning accuracy for different subjects. Attached Figure Description

[0037] Figure 1 A schematic diagram of a breast CBCT device for breast computed tomography.

[0038] Figure 2 A partial cross-sectional view of the fixation component of a breast CBCT device for breast computed tomography.

[0039] Figure 3 A schematic diagram of the synchronous drive component of a breast CBCT device for breast computed tomography.

[0040] Figure 4 A schematic diagram of the breast compression component structure of a breast CBCT device for breast computed tomography.

[0041] Figure 5 A schematic diagram of the chest binding component of a breast CBCT device for breast computed tomography.

[0042] Figure 6 This is a schematic diagram of the second scanning component of a breast CBCT device for breast computed tomography.

[0043] In the diagram: 1. Device base; 2. Device support; 3. Vertical track; 4. Fixing component; 5. First scanning component; 6. Breast compression component; 7. Second scanning component; 41. Embedded guide rail; 42. Electric slider one; 43. Fixing frame; 44. Breast support plate; 51. Sliding block; 52. Synchronous drive component; 53. First scanner; 521. Fixed shaft; 522. First gear; 523. Second gear; 524. First rack; 525. Second rack; 61. Electric slider two; 62. Support frame; 63. Z-shaped support; 64. Breast binding component; 65. Compression plate; 641. Sealed connecting pipe; 642. Fixing clamp; 643. First piston rod; 644. Second piston rod; 645. Breast binding band; 71. Circular track; 72. Spring rod; 73. Fixing connecting rod; 74. Electric slider three; 75. Support frame; 76. Second scanner. Detailed Implementation

[0044] Please see Figures 1-6 The present invention provides a breast CBCT device for breast computed tomography, comprising:

[0045] Device base 1 is placed horizontally on the bottom surface;

[0046] The device support 2 is placed vertically and fixedly mounted above the device base 1, with a vertical rail 3 embedded in its right side plane;

[0047] Fixed component 4 is slidably mounted on the vertical track 3;

[0048] The first scanning component 5 is slidably assembled in the middle of the fixed component 4;

[0049] The breast compression component 6 is horizontally placed above the right side of the fixing component 4 and is slidably assembled in the middle of the fixing component 4;

[0050] The second scanning component 7 is fixedly mounted on the fixed component 4.

[0051] Furthermore, the fixing component 4 includes:

[0052] An electric slider 42 is slidably mounted on the vertical track 3, and a fixing frame 43 is fixedly mounted on its right side, and a breast support plate 44 is fixedly mounted on the right side of the fixing frame 43.

[0053] The embedded guide rail 41 is vertically embedded and fixed at the center of the right side of the fixing frame 43;

[0054] In a preferred embodiment, during scanning, the subject needs to place their breasts on the breast support plate 44 on the right side of the fixing component 4. Different subjects may have different breast positions due to differences in height. A vertical track 3 is provided on the right side of the device bracket 2 so that the position of the fixing component 4 can be adaptively adjusted according to different subjects by using an electric slider 42.

[0055] Furthermore, the first scanning component 5 includes:

[0056] The sliding block 51 is placed directly above the electric slider 42 and is slidably mounted on the embedded guide rail 41;

[0057] The synchronous drive component 52 is placed inside the fixed frame 43 and is fixedly assembled on the inner walls at both ends of the fixed frame 43.

[0058] The first scanner 53 is fixedly mounted on the right side of the sliding block 51;

[0059] In a preferred embodiment, in the initial state, the first scanner 53 is located between the breast support plate 44 and the breast compression component 6. When the breast compression component 6 presses down, it will cause the sliding block 51 to move down through the synchronous drive component 52, thereby ensuring that the first scanner 53 always remains in the center of the subject's breast.

[0060] Furthermore, the synchronization drive component 52 includes:

[0061] The fixed shaft 521 is fixedly mounted on the inner walls of the front and rear ends of the fixed frame 43, and the first gear 522 and the second gear 523 are coaxially rotatably mounted on it.

[0062] The first rack 524 is configured as a right angle, with the lower toothless section fixedly mounted on the sliding block 51, and the upper rack section meshing with the second gear 523;

[0063] The second rack 525 meshes with the first gear 522, and its right side is fixedly mounted on the electric slider 61.

[0064] Furthermore, the transmission ratio between the first gear 522 and the second gear 523 is 2, and the two sets of gears are relatively fixed, thereby ensuring their synchronicity during movement;

[0065] In a preferred embodiment, when the electric slider 61 moves downward, the second rack 525 fixed thereon moves downward, the first gear 522 rotates clockwise, the second gear 523 fixed relative to the first gear 522 rotates clockwise, the first rack 524 moves downward, and simultaneously the sliding block 51 and the first scanner 53 move downward. Because the position of the breast support plate 44 is relatively fixed, and in order to ensure that the first scanner 53 is always located at the center of the subject's breast, the transmission ratio between the first gear 522 and the second gear 523 is set to 2. When the breast compression component 6 moves downward a distance of A, the first scanning component 53 moves downward a distance of A / 2, thereby ensuring that the first scanner 53 is always located at the center of the subject's breast and improving the overall accuracy of the device.

[0066] Furthermore, the breast compression component 6 includes:

[0067] Electric slider 61 is slidably mounted on the embedded guide rail 41, and a support frame 62 is fixedly connected to its right side.

[0068] Two sets of Z-shaped brackets 63 are symmetrically arranged and are fixedly assembled on the front and rear planes of the receiving frame 62, respectively.

[0069] The chest binding assembly 64 is symmetrically arranged in two sets, and is fixedly assembled on the right side plane of the fixing frame 43 respectively;

[0070] The pressure plate 65 is fixed to the plane at the lower right end of the receiving frame 62 with horizontal bolts;

[0071] In a preferred embodiment, to avoid the pressure of the compression plate 65 causing harm to the subject, the electric slider 61 is manually operated by the subject to ensure that the compression plate 65 presses down to an acceptable level. During the compression of the breasts, the breasts are squeezed and move towards the center. If the subject's breasts are large, they may overlap in the middle, hindering the scanning component and preventing the device from performing a complete scan, thus affecting the scanning results. Therefore, a chest-binding component 64 is provided. During the compression of the plate 65, one end of the chest-binding component 64 is simultaneously moved outwards to ensure a certain distance between the subject's breasts, allowing the first scanning component 5 to perform supplementary scanning, avoiding blind spots, and further improving scanning efficiency and accuracy.

[0072] Furthermore, the chest binding assembly 64 includes:

[0073] The sealed connecting tube 641 is fixedly mounted on the fixed frame 43 on its left side by two sets of fixing clamps 642. The first piston rod 643 is slidably mounted on the vertical section of its left side, and the lower end of the first piston rod 643 is fixed on the Z-shaped bracket 63. The second piston rod 644 is slidably mounted on the horizontal section of its right side, and the other end of the second piston rod 644 is coaxially fixed on the extension shaft on the left side of the chest binder 645.

[0074] In a preferred embodiment, the sealed connecting tube 641 is completely sealed and filled with a certain amount of compressed air. The first piston rod 643 and the second piston rod 644 are of equal length. In the initial state, the pressure plate 65 is located at its uppermost end, the first piston rod 643 is fully retracted, the second piston rod 644 is fully extended, and the two sets of chest binding straps 645 are in a relatively parallel state. When the pressure plate 65 moves downward, because the sealed connecting tube 641 is fixed, the first piston rod 643 moves downward relative to the second piston rod 644 and retracts outward relative to the first piston rod, while simultaneously driving the chest binding straps 645 to move outward. This prevents the subject's breast from moving towards the center during the compression process, causing overlap and creating scanning blind spots that affect the scanning effect.

[0075] Furthermore, both ends of the chest binder 645 are provided with an extension shaft, and a chest band that can undergo elastic deformation is fixed in the middle. The lower right end of the extension shaft is coaxially rotatably fitted into the groove on the right side of the breast support plate 44, and the lower left end is slidably fitted into the straight groove on the left side of the breast support plate 44. The lower end plane of the chest binder 645 coincides with the upper end plane of the breast support plate 44. The upper end of the compression plate 65 is provided with a through groove corresponding to the breast support plate 44, and the groove allows the chest binder 645 to pass freely through the compression plate 65.

[0076] In a preferred embodiment, the chest binder 645 slides outward along its right rotation axis under the drive of the second piston rod 644. The chest binder 645 will elongate to offset the length increase caused by the change in angle. In order to avoid damage to the breast of the subject by the middle part of the chest binder 645 in the straight state, an arc-shaped groove is provided on the compression plate 65 so that the chest binder 645 fits the groove during the deformation process, thereby avoiding damage.

[0077] Furthermore, the second scanning component 7 includes:

[0078] The circular track 71 has two sets of symmetrically arranged fixed connecting rods 73 fixed at its upper inner side. The other end of the two sets of fixed connecting rods 73 is fixedly assembled on the upper end of the sliding block 51. The lower inner side of the track 71 has two sets of symmetrically arranged spring rods 72 rotatably assembled on its lower inner side. The other end of the two sets of spring rods 72 is rotatably assembled on the lower end of the electric slider 41.

[0079] In a preferred embodiment, in the initial state, the center of the annular track 71 and the center of the first scanner 53 are on the same horizontal straight line, and the spring rod 72 is not under force. When the breast compression component 6 moves downward, the second scanning component 7 moves synchronously with the first scanning component 5 as the first scanning component 5 moves downward. In this state, the spring rod 72 will extend. After the scanning is completed, the spring rod 72 will contract as the breast compression component 6 rises.

[0080] Furthermore, an electric slider three 74 is coaxially rotatably mounted on the outer side of the annular track 71, and a receiving bracket 75 is fixedly mounted on the right end of the electric slider three 74, and a second scanner 76 is fixedly mounted on the lower end of the receiving bracket 75.

[0081] The specific implementation includes the following steps: The electric slider 42 is activated and the position of the breast support plate 44 is adjusted according to the height of the subject. After the subject places their breast on the breast support plate 44, the breast compression component 6 is activated, causing the compression plate 65 to continuously press down. During this process, the first scanning component 5 and the second scanning component 7 move downwards as the compression plate 65 is pressed down. Simultaneously, under the action of the synchronous drive component 52, they remain in a position corresponding to the center of the subject's breast. During this process, the chest binding component 64 moves to both sides from its initial position to avoid the two breasts overlapping and causing scanning blind spots. After the compression plate 65 has compressed to a certain extent, it stops. The second scanning component is activated to rotate along the circular track 65 while performing a full-range scan of the subject's breast. At the same time, the first scanner is activated to supplement the scanning blind spots of the second scanning component. After the scan is completed, it stops, and all devices return to their initial positions, completing the tomographic scan of the subject.

[0082] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A breast CBCT device for breast computed tomography, characterized in that: include: The device base (1) is placed horizontally on the bottom surface; The device support (2) is placed vertically and fixedly mounted above the device base (1), with a vertical rail (3) embedded in its right side plane; The fixed component (4) is slidably mounted on the vertical track (3); The first scanning component (5) is slidably assembled in the middle of the fixed component (4); The breast compression component (6) is horizontally placed above the right side of the fixation component (4) and is slidably fitted in the middle of the fixation component (4); The second scanning component (7) is fixedly mounted on the fixed component (4); The fixing component (4) includes: An electric slider (42) is slidably mounted on the vertical track (3), and a fixing frame (43) is fixedly mounted on its right side; The first scanning component (5) includes: The sliding block (51) is placed directly above the electric slider (42) and is slidably mounted on the embedded guide rail (41); The synchronous drive assembly (52) is placed inside the fixed frame (43) and fixedly mounted on the inner walls at both ends of the fixed frame (43); The first scanner (53) is fixedly mounted on the right side of the sliding block (51); During the downward pressing of the breast compression component (6), the sliding block (51) is moved down by the synchronous drive component (52), thereby ensuring that the first scanner (53) always remains in the center of the subject's breast. The breast compression assembly (6) includes: The chest binding assembly (64) is symmetrically arranged in two sets, and is fixedly assembled on the right side plane of the fixing frame (43).

2. The breast CBCT device for breast computed tomography according to claim 1, characterized in that: The fixing component (4) also includes: The right side of the fixing frame (43) is fixedly fitted with a breast support plate (44); An embedded guide rail (41) is vertically embedded and fixed at the center of the right side of the mounting bracket (43).

3. The breast CBCT device for breast computed tomography according to claim 1, characterized in that: The synchronous drive component (52) includes: A fixed shaft (521) is fixedly mounted on the inner walls of the front and rear ends of the fixed frame (43), and a first gear (522) and a second gear (523) are coaxially mounted on it. The first rack (524) is set in a right angle shape, with the lower toothless section fixedly mounted on the sliding block (51), and the upper rack section meshing with the second gear (523); The second rack (525) meshes with the first gear (522), and its right side is fixedly mounted on the electric slider two (61).

4. A breast CBCT device for breast computed tomography according to claim 3, characterized in that: The transmission ratio between the first gear (522) and the second gear (523) is 2, and the two sets of gears are relatively fixed to each other, thereby ensuring their synchronicity during movement.

5. A breast CBCT device for breast computed tomography according to claim 2, characterized in that: The breast compression assembly (6) also includes: Electric slider 2 (61) is slidably mounted on the embedded guide rail (41), and a support frame (62) is fixedly connected to its right side; Two sets of Z-shaped brackets (63) are symmetrically arranged and fixedly assembled on the front and rear planes of the receiving frame (62); The pressure plate (65) is fixed to the plane at the lower right end of the receiving frame (62) by horizontal bolts.

6. A breast CBCT device for breast computed tomography according to claim 5, characterized in that: The chest binding assembly (64) includes: The sealed connecting tube (641) is fixedly mounted on the fixed frame (43) on its left side by two sets of fixing clamps (642). The first piston rod (643) is slidably mounted on the vertical section of its left side, and the lower end of the first piston rod (643) is fixed on the Z-shaped bracket (63). The second piston rod (644) is slidably mounted on the horizontal section of its right side, and the other end of the second piston rod (644) is slidably fixed on the extension shaft on the left side of the chest binder (645).

7. A breast CBCT device for breast computed tomography according to claim 6, characterized in that: Both ends of the chest binder (645) are provided with an extension shaft, and the middle part is fixed with a chest band that can undergo elastic deformation. The lower right end of the extension shaft is coaxially rotatably assembled in the groove on the right side of the breast support plate (44), and the lower left end is slidably assembled in the straight groove on the left side of the breast support plate (44). The lower end plane of the chest binder (645) coincides with the upper end plane of the breast support plate (44). The upper end of the compression plate (65) is provided with a through groove corresponding to the breast support plate (44), and the groove allows the chest binder (645) to pass freely through the compression plate (65).

8. A breast CBCT device for breast computed tomography according to claim 1, characterized in that: The second scanning component (7) includes: The circular track (71) has two sets of symmetrically arranged fixed connecting rods (73) fixed at its upper inner side. The other end of the two sets of fixed connecting rods (73) is fixedly assembled on the upper end of the sliding block (51). The lower inner side of the track has two sets of symmetrically arranged spring rods (72) rotatably assembled on its lower inner side. The other end of the two sets of spring rods (72) rotatably assembled on the lower end of the electric slider (42).

9. A breast CBCT device for breast computed tomography according to claim 8, characterized in that: An electric slider three (74) is coaxially mounted on the outer side of the annular track (71). A receiving bracket (75) is fixedly mounted on the right end of the electric slider three (74), and a second scanner (76) is fixedly mounted on the lower end of the receiving bracket (75).

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