Medical imaging apparatus

Abstract

The application discloses a medical imaging device, which comprises a scanning part, a first driving mechanism, a second driving mechanism and a third driving mechanism; the scanning part is used for scanning a scanning object; the first driving mechanism is connected with the scanning part and is used for driving the scanning part to rotate around a first axis; the second driving mechanism is connected with the scanning part or the first driving mechanism, and is used for directly driving the scanning part to rotate around a second axis or indirectly driving the scanning part to rotate around the second axis through the first driving mechanism; and the third driving mechanism is connected with the second driving mechanism or the first driving mechanism, and is used for indirectly driving the scanning part to move along a third axis through the second driving mechanism or the first driving mechanism. The medical imaging device improves the flexibility of the position of the scanning part and improves the quality of the image information obtained by the scanning part.

Description

Technical Field

[0001] This invention relates to the field of high-end medical equipment technology, and in particular to a medical imaging device. Background Technology

[0002] In order to determine the location of lesions in a patient's body, it is usually necessary to use some medical imaging equipment to scan the patient and obtain corresponding image information, such as using a CT (Computed Tomography) machine to scan the patient. Doctors use the obtained image information to determine the location of the lesions.

[0003] Existing CT scanners are equipped with a bed. The CT scanner is placed on the ground, and the patient lies on the bed. The bed is then moved to allow the patient to enter the circular scanning section of the CT scanner, enabling the CT scanner to scan and image the patient. Another existing method involves suspending the scanning section of the CT scanner from the ceiling, with the patient standing below the scanning section. The CT scanner then moves up and down to scan the patient.

[0004] After scanning a patient to obtain imaging information, image information outside the lesion area is filtered out to facilitate accurate diagnosis by doctors. However, after scanning, high-density areas exist around the lesion area, containing complex image information. These high-density areas may not be completely filtered or may be difficult to filter, affecting the quality of the final image. Therefore, it is necessary to provide an improved medical imaging device. Summary of the Invention

[0005] The purpose of this invention is to provide a medical imaging device that improves the flexibility of the scanning unit position and enhances imaging quality.

[0006] The objective of this invention is achieved through the following technical solution:

[0007] A medical imaging device, comprising:

[0008] The scanning unit is used to scan the object to be scanned;

[0009] A first driving mechanism is connected to the scanning unit and is used to drive the scanning unit to rotate around a first axis;

[0010] The second driving mechanism is connected to the scanning unit or the first driving mechanism to directly drive the scanning unit or indirectly drive the scanning unit to rotate around the second axis through the first driving mechanism;

[0011] The third driving mechanism is connected to the second driving mechanism or the first driving mechanism and indirectly drives the scanning unit to move along the third axis through the second driving mechanism or the first driving mechanism;

[0012] The first axis, the second axis, and the third axis intersect.

[0013] Preferably, the third drive mechanism includes a mounting frame, a plurality of legs connected to the mounting frame, and a third drive assembly mounted on the legs; the legs abut against the ground to support the mounting frame, and the first drive mechanism, the second drive mechanism, and the scanning unit are directly or indirectly mounted on the mounting frame; the third drive assembly is used to drive the mounting frame to move along a third axis.

[0014] And / or, the scanning unit is the scanning unit of a CT scanner.

[0015] Preferably, the third drive assembly includes a lead screw and a motor, the lead screw being connected to the mounting bracket and used to drive the mounting bracket to move synchronously, and the motor driving the lead screw to move along a third axis;

[0016] And / or, the third axis is a vertical axis, and the third driving component drives the scanning unit to move vertically to achieve vertical scanning.

[0017] Preferably, the support leg is provided with a slider, and the mounting bracket is provided with a slide rail; or, the support leg is provided with a slide rail, and the mounting bracket is provided with a slider; the slider slides in cooperation with the corresponding slide rail to guide the movement path of the mounting bracket.

[0018] Preferably, the second drive mechanism includes a second drive assembly mounted on the mounting bracket and a rotating frame connected to the second drive assembly, wherein the second drive assembly drives the rotating frame to rotate along a second axis.

[0019] Preferably, the second drive assembly includes a second transmission group, a second drive member, and a second rotating shaft fixedly connected to the rotating frame. The second drive member drives the second rotating shaft to rotate through the second transmission group, and the rotation axis of the second rotating shaft forms the second axis.

[0020] Preferably, it further includes a first rotating shaft, which is connected to the scanning unit and the second driving assembly respectively. The first rotating shaft is used to drive the scanning unit to rotate around the second axis under the drive of the second driving assembly; the axis of the first rotating shaft intersects the second axis.

[0021] And / or, the second transmission assembly includes a second master gear connected to the second drive member and a second driven gear connected to the second rotating shaft, wherein the second master gear meshes with the second driven gear, and the number of teeth of the second master gear is less than the number of teeth of the second driven gear.

[0022] Preferably, the first driving mechanism includes the first rotating shaft and a first driving component for driving the first rotating shaft to rotate along a first axis, wherein the first rotating shaft drives the scanning part to rotate synchronously along the first axis; the rotation axis of the first rotating shaft forms the first axis.

[0023] Preferably, the first driving component includes a first driving member and a first transmission group, wherein the first driving member drives the first rotating shaft to rotate along the first axis through the first transmission group.

[0024] Preferably, the first driving member is mounted on the rotating frame; the first transmission group includes a first main gear connected to the first driving member and a first driven gear connected to the first rotating shaft, the first main gear meshing with the first driven gear, and the number of teeth of the first main gear being less than the number of teeth of the first driven gear.

[0025] Preferably, the rotating frame includes a first end and a second end opposite to each other along the second axis, and the second driving component is disposed between the first end and the second end of the rotating frame; the first end is provided with the first rotating shaft, and the first rotating shaft is used to support the scanning unit; the second end is provided with a counterweight component, and the counterweight component is used to balance the force exerted by the scanning unit on the rotating frame.

[0026] Compared with the prior art, the beneficial effects of the present invention include at least the following:

[0027] The scanning unit is driven to rotate around a first axis by a first drive mechanism, rotate around a second axis by a second drive mechanism, and move along a third axis by a third drive mechanism. The cooperation of the first, second, and third drive mechanisms enables the scanning unit to rotate along the first and second axes and move along the third axis, effectively increasing the flexibility of the scanning unit's position and posture. This allows the scanning area of ​​the scanning unit to avoid high-density areas around lesions, improving the quality of the image information acquired by the scanning unit, further improving the level of medical services, and allowing patients to enjoy more advanced medical technology. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a medical imaging device according to an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of a portion of the structure of the medical imaging device according to an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of the first driving mechanism and the scanning unit according to an embodiment of the present invention;

[0031] Figure 4This is a partial structural schematic diagram of the second driving mechanism according to an embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of another part of the structure of the medical imaging device according to an embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the third driving mechanism according to an embodiment of the present invention;

[0034] Figure 7 yes Figure 6 Enlarged view of part A in the middle.

[0035] In the figure: 1. Scanning unit; 2. First drive mechanism; 21. First drive assembly; 211. First drive member; 212. First transmission group; 2121. First main gear; 2122. First driven gear; 22. First rotating shaft; 3. Second drive mechanism; 31. Second drive assembly; 311. Second transmission group; 3111. Second main gear; 3112. Second driven gear; 312. Second drive member; 313. Second rotating shaft; 32. Rotating frame; 321. Counterweight assembly; 4. Third drive mechanism; 41. Mounting frame; 411. Slide rail; 42. Support leg; 421. Slider; 43. Third drive assembly; 431. Lead screw; 432. Motor. Detailed Implementation

[0036] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided to make the invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0037] The terms used to express position and direction in this invention are illustrated with reference to the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this invention.

[0038] Reference Figure 1 This invention provides a medical imaging device, including a scanning unit 1 for scanning an object to be scanned, and a first driving mechanism 2, a second driving mechanism 3, and a third driving mechanism 4 for driving the scanning unit 1 to move. The first driving mechanism 2, the second driving mechanism 3, and the third driving mechanism 4 can be used individually or jointly to drive the scanning unit 1, thereby improving the flexibility of the scanning unit 1's position and allowing it to be moved to a better position for scanning. Specifically, the scanning unit 1 can be the scanning unit of a CT scanner.

[0039] Specifically, the first driving mechanism 2 drives the scanning unit 1 to rotate around the first axis, the second driving mechanism 3 drives the scanning unit 1 to rotate around the second axis, and the third driving mechanism 4 drives the scanning unit 1 to move along the third axis. Through the cooperation of the first driving mechanism 2, the second driving mechanism 3, and the third driving mechanism 4, the scanning unit 1 can rotate along the first and second axes and move along the third axis, allowing the scanning unit 1 to achieve multiple postures and effectively increasing the flexibility of its position. The first, second, and third axes intersect. Specifically, the third axis can be a vertical axis, allowing the medical imaging device to be used for vertical scanning; the first and second axes are intersecting horizontal axes, and the first and second axes can be perpendicular to the third axis respectively. The scanning unit has a scanning cavity extending along the third axis, i.e., vertically, to accommodate the area to be scanned.

[0040] When a medical imaging device is needed to scan a patient to obtain corresponding medical images, the scanning unit 1 can rotate around the first and / or second axes, in addition to moving along the third axis. This allows the scanning unit 1 to avoid high-density areas surrounding the lesion area while ensuring that the lesion area is within the scanning area of ​​the scanning unit 1. In this case, the image information obtained by the scanning unit 1 contains relatively simple image information outside the lesion area, making it easier to perform secondary processing to remove image information outside the lesion area. Alternatively, if the image information outside the lesion area has little impact on the image information formed by the scanning unit 1, secondary processing may not even be necessary, effectively simplifying the processing flow.

[0041] Reference Figure 2 and Figure 3 The first driving mechanism 2 can be directly connected to the scanning unit 1 to drive the scanning unit 1 to rotate around a first axis. Specifically, the first driving mechanism 2 may include a first driving assembly 21 and a first rotating shaft 22. The first rotating shaft 22 is connected to the scanning unit 1 and can drive the scanning unit 1 to move synchronously. Furthermore, the first rotating shaft 22 can be used to support the scanning unit 1. For example, the end of the first rotating shaft 22 that connects to the scanning unit 1 forms a polygonal column structure. The scanning unit 1 is provided with a corresponding polygonal column groove. The polygonal column structure of the first rotating shaft 22 is inserted into the corresponding polygonal column groove in the scanning unit 1, so that the first rotating shaft 22 can drive the scanning unit 1 to move synchronously. In other embodiments, the end of the first rotating shaft 22 that connects to the scanning unit 1 may not be a polygonal column structure; it may be another non-cylindrical structure to ensure that when the first rotating shaft 22 rotates or moves, it can drive the scanning unit to rotate or move synchronously.

[0042] The axis of the first rotating shaft 22 coincides with the first axis, and the first rotating shaft 22 rotates around the axis of the first rotating shaft 22 under the drive of the first driving assembly 21. One or more first rotating shafts 22 may be provided. (Refer to...) Figure 3 In this embodiment, two first rotating shafts 22 can be provided. These two first rotating shafts 22 are located on opposite sides of the scanning unit 1 and connected to it respectively. The two first rotating shafts 22 can jointly support the scanning unit 1, thereby improving the stability of the support for the scanning unit 1. Each first rotating shaft 22 can be connected to a first driving component 21, and each first rotating shaft 22 is driven by its corresponding first driving component 21. Alternatively, only one first driving component 21 can be provided. One first rotating shaft 22 is connected to the first driving component 21, and this first rotating shaft 22 drives the scanning unit 1 to rotate under the drive of the first driving component 21. The remaining first rotating shafts 22 can rotate under the influence of the scanning unit 1 when it rotates.

[0043] The first drive assembly 21 may include a first drive member 211 and a first transmission group 212. The first transmission group 212 is connected to the first rotating shaft 22 and the first drive member 211 respectively, so that the power of the first drive member 211 can be transmitted to the first rotating shaft 22 through the first transmission group 212, thereby enabling the first drive member 211 to drive the first rotating shaft 22 to rotate along the first axis.

[0044] The first transmission assembly 212 may include a first master gear 2121 connected to the first driving member 211 and a first driven gear 2122 connected to the first rotating shaft 22, wherein the first master gear 2121 and the first driven gear 2122 mesh. When the first driving member 211 drives the first master gear 2121 to rotate, the first master gear 2121 drives the first driven gear 2122 to rotate, thereby causing the first rotating shaft 22 connected to the first driven gear 2122 to rotate. Specifically, the first driving member 211 may be a drive motor, and the first master gear 2121 is sleeved on the output shaft of the drive motor and forms a key connection with the output shaft. The first driven gear 2122 may be sleeved on the first rotating shaft 22, and the first driven gear 2122 may be interference-fitted or keyed with the first rotating shaft 22 to ensure that the first driven gear 2122 can rotate synchronously with the first rotating shaft 22.

[0045] In some specific embodiments, the number of teeth of the first master gear 2121 can be less than the number of teeth of the first driven gear 2122, so that the first transmission group 212 can achieve the function of speed reduction and torque increase, thereby reducing the load on the first drive member 211 and facilitating the improvement of the rotation accuracy of the first rotating shaft 22, thereby improving the control accuracy of the amount of rotation of the scanning unit 1 around the first axis.

[0046] Reference Figure 2To facilitate the cooperation between the first drive mechanism 2 and the second drive mechanism 3, the first drive mechanism 2 can be mounted on the second drive mechanism 3, allowing the second drive mechanism 3 to drive the first drive mechanism 2 to rotate around the second axis. Therefore, when the second drive mechanism 3 needs to drive the scanning unit 1 to rotate around the second axis, the second drive mechanism 3 will drive the first drive mechanism 2 and the scanning unit 1 to rotate synchronously around the second axis, maintaining a stable connection between the first drive mechanism 2 and the scanning unit 1, and the first drive mechanism 2 can drive the scanning unit 1 to rotate around the first axis at any time. Preferably, the second axis intersects the first axis, or is perpendicular to the first axis.

[0047] The second drive mechanism 3 can be directly connected to the scanning unit 1. For example, the second drive mechanism 3 is provided with a connector that is fixedly connected to the scanning unit 1, and the second drive mechanism 3 drives the scanning unit 1 to move through the connector. Alternatively, the second drive mechanism 3 can be connected to the first drive mechanism 2 and indirectly drive the scanning unit 1 to move through the first drive mechanism 2. In this embodiment, the example of the second drive mechanism 3 being connected to the first drive mechanism 2 and indirectly driving the scanning unit 1 to move through the first drive mechanism 2 will be used for explanation.

[0048] The second drive mechanism 3 is specifically connected to the first rotating shaft 22 in the first drive mechanism 2, and the second drive mechanism 3 drives the first rotating shaft 22 to rotate around the second axis. The first rotating shaft 22 drives the scanning unit 1 to rotate synchronously around the second axis. The second drive mechanism 3 includes a second drive assembly 31 and a rotating frame 32 connected to the second drive assembly 31. The first drive mechanism 2 can be mounted on the rotating frame 32, and the second drive assembly 31 can drive the rotating frame 32 to rotate around the second axis. The rotating frame 32 synchronously drives the first drive mechanism 2 mounted on the rotating frame 32 to rotate around the second axis. The first rotating shaft 22 in the first drive mechanism 2 drives the scanning unit 1 to rotate around the second axis. Specifically, the rotating frame 32 includes a first end and a second end opposite to each other along the second axis. The first rotating shaft 22 passes through the rotating frame 32 along the first axis and is connected to the scanning unit 1. The first drive member 211 is mounted on the first end of the rotating frame 32. The first transmission assembly 212 is connected to the first rotating shaft 22 and the first drive member 211 to be indirectly mounted on the rotating frame 32. The first rotating shaft 22 can be clearance-fitted with the rotating frame 32, or the first rotating shaft 22 and the rotating frame 32 can be connected by a bearing, so that the first rotating shaft 22 can rotate relative to the rotating frame 32 around the axis of the first rotating shaft 22.

[0049] Reference Figure 2 and Figure 4The second drive mechanism 3 is disposed between the first and second ends of the rotating frame 32. Specifically, the second drive mechanism 3 may include a second transmission group 311, a second drive member 312, and a second rotating shaft 313 fixedly connected to the rotating frame 32. The second rotating shaft 313 is connected to the rotating frame 32 by an interference fit, a key connection, or other fixing structures such as screws or clips, so that the second rotating shaft 313 can drive the rotating frame 32 to move synchronously, and the second rotating shaft 313 can also support the rotating frame 32. The second drive member 312 drives the second rotating shaft 313 to rotate along the axis of the second rotating shaft 313 through the second transmission group 311; the axis of the second rotating shaft 313 is the second axis.

[0050] The second transmission assembly 311 may include a second master gear 3111 connected to the second driving member 312 and a second driven gear 3112 connected to the second rotating shaft 313, wherein the second master gear 3111 and the second driven gear 3112 mesh. When the second driving member 312 drives the second master gear 3111 to rotate, the second master gear 3111 drives the second driven gear 3112 to rotate, thereby causing the second rotating shaft 313 connected to the second driven gear 3112 to rotate. Specifically, the second driving member 312 may be a drive motor, and the second master gear 3111 is sleeved on the output shaft of the drive motor and forms a key connection with the output shaft. The second driven gear 3112 may be sleeved on the second rotating shaft 313, and the second driven gear 3112 may be interference-fitted or keyed with the second rotating shaft 313 to ensure that the second driven gear 3112 can rotate synchronously with the second rotating shaft 313.

[0051] In some specific embodiments, the number of teeth of the second main gear 3111 can be less than the number of teeth of the second driven gear 3112, so that the second transmission group 311 can achieve the function of speed reduction and torque increase, thereby reducing the load on the second drive member 312 and facilitating the improvement of the rotation accuracy of the second rotating shaft 313, thereby improving the control accuracy of the rotation amount of the scanning unit 1 around the second axis.

[0052] The scanning unit 1 is generally quite heavy, for example, it can weigh over 1 ton. When the scanning unit 1 is held at the first end of the rotating frame 32 via the first rotating shaft 22, the first end of the rotating frame 32 will bear a large force. This, in turn, requires the second rotating shaft 313, which supports the rotating frame 32, to provide a large force to counteract the force on the first end of the rotating frame 32, increasing the load on the second rotating shaft 313 and potentially affecting the positional adjustment accuracy of the scanning unit 1. (Refer to...) Figure 2To achieve force balance in the rotating frame 32, a counterweight assembly 321 can be provided at the second end of the rotating frame 32. The counterweight assembly 321 is used to balance the force applied to the rotating frame 32 by the scanning unit 1. Specifically, the rotating frame 32 generally forms a lever structure, and the position where the rotating frame 32 is connected to the second rotating shaft 313 is the fulcrum of the lever structure. By adding an appropriate weight of the counterweight assembly 321, the torque at the first end of the rotating frame 32 is the same as or approximately the same as the torque at the second end. At this time, the fulcrum position, that is, the position where the support frame is connected to the second rotating shaft 313, does not require or basically does not require any force, thereby achieving force balance in the rotating frame 32, improving the overall structural stability of the medical imaging device, and ensuring the position adjustment accuracy of the scanning unit 1. The counterweight assembly 321 may include multiple counterweight blocks. By adjusting the number and / or weight of the counterweight blocks, the torque at the first end and the second end of the support frame is the same as or approximately the same.

[0053] The third drive mechanism 4 can be connected to the first drive mechanism 2, so that the third drive mechanism 4 can drive the first drive mechanism 2 to move along the third axis. When the first drive mechanism 2 moves, it drives the second drive mechanism 3 and the scanning unit 1 connected to the first drive mechanism 2 to move synchronously along the third axis. Alternatively, the third drive mechanism 4 can be connected to the second drive mechanism 3, so that the third drive mechanism 4 can drive the second drive mechanism 3 to move along the third axis. When the second drive mechanism 3 moves, it drives the first drive mechanism 2 and the scanning unit 1 connected to the second drive mechanism 3 to move synchronously along the third axis. In this embodiment, the connection between the third drive mechanism 4 and the second drive mechanism 3 is specifically used as an example for explanation.

[0054] Reference Figure 5 and Figure 6 The third drive mechanism 4 includes a mounting frame 41, a plurality of legs 42 connected to the mounting frame 41, and a third drive assembly 43 mounted on the legs 42. The legs 42 can rest against the ground to serve as support feet for the medical imaging device. The mounting frame 41 is connected to and supported by the legs 42. A second drive mechanism 3 can be mounted on the mounting frame 41 so that when the mounting frame 41 moves, it can drive the second drive mechanism 3, as well as the first drive mechanism 2 and the scanning unit 1, which are directly or indirectly mounted on the second drive mechanism 3. In other embodiments, when the third drive mechanism 4 is connected to the first drive mechanism 2, the first drive mechanism 2 can also be mounted on the mounting frame 41, and the mounting frame 41 drives the second drive mechanism 3 and the scanning unit 1 to move via the first drive mechanism 2.

[0055] The third drive assembly 43 drives the mounting bracket 41 to move along the third axis, thereby causing the second drive mechanism 3, the first drive mechanism 2, and the scanning unit 1, which are directly or indirectly mounted on the mounting bracket 41, to move along the third axis. The third drive assembly 43 can be mounted on the support leg 42. Specifically, the third drive assembly 43 may include a lead screw 431 and a motor 432. The lead screw 431 and the motor 432 can form an electric cylinder to convert the rotational motion of the motor 432 into the linear motion of the lead screw 431. The axis of the lead screw 431 is parallel to the third axis, so that the lead screw 431 can move along the third axis under the drive of the motor 432. The lead screw 431 and the mounting bracket 41 are fixedly connected by fasteners such as pins, screws, and clips. When the lead screw 431 moves along the third axis, it will drive the mounting bracket 41 to move synchronously along the third axis.

[0056] In some specific embodiments, multiple legs 42 can be provided, and each leg 42 is connected to the mounting frame 41 to support the mounting frame 41 at multiple positions. Each leg 42 can be provided with a third drive assembly 43, and the multiple third drive assemblies 43 synchronously drive the mounting frame 41 to move. Specifically, four legs 42 can be provided, which are distributed in a square at the four corners, and the four third drive assemblies 43 are correspondingly distributed in a square at the four corners and jointly drive the mounting frame 41.

[0057] Since the scanning unit 1 may be quite heavy, support legs 42 are used to brace against the ground, providing support for the mounting frame 41, scanning unit 1, second drive mechanism 3, and third drive mechanism 4. The support legs 42 offer better rigidity and stability, enabling the medical imaging device to have high stability and rigidity, allowing for heavy-duty movements of the scanning unit 1. Furthermore, the use of multiple support legs 42 in combination to provide support effectively increases the stability of the scanning unit 1 support mechanism, enabling it to handle various heavy-duty position adjustment operations of the scanning unit 1.

[0058] Reference Figure 7 In some specific embodiments, to ensure the smooth and accurate movement of the mounting bracket 41, a slider 421 is fixedly connected to the support leg 42, and a slide rail 411 is fixedly connected to the mounting bracket 41. The extension direction of the slide rail 411 is parallel to the third axis. The slider 421 slides in cooperation with the corresponding slide rail 411. When the mounting bracket 41 moves along the third axis, the slide rail 411 on the mounting bracket 41 will slide relative to the corresponding slider 421 to guide the mounting bracket 41 to move along the extension direction of the slide rail 411, i.e., the third axis, thereby improving the stability and accuracy of the movement of the mounting bracket 41.

[0059] In some specific embodiments, a slide rail 411 may be fixedly connected to the support leg 42, the extension direction of the slide rail 411 being parallel to the third axis, and a slider 421 may be fixedly connected to the mounting bracket 41. The slider 421 slides in cooperation with the corresponding slide rail 411. When the mounting bracket 41 moves along the third axis, the slider 421 on the mounting bracket 41 will slide relative to the corresponding slide rail 411 to guide the mounting bracket 41 to move along the extension direction of the slide rail 411, i.e., the third axis, thereby improving the stability and accuracy of the movement of the mounting bracket 41.

[0060] When multiple support legs 42 are provided, each support leg 42 can be guided by the mounting frame 41 through the cooperation of sliders 421 and slide rails 411. Each slide rail 411 can cooperate with one or more sliders 421. When a slide rail 411 cooperates with multiple sliders 421, the multiple slide rails 411 cooperating with that slide rail 411 are spaced apart along the extension direction of that slide rail 411. When slide rails 411 are provided on the support leg 42, one support leg 42 can have one or more slide rails 411, and one or more slide rails 411 respectively form a sliding cooperation with the corresponding sliders 421 on the mounting frame 41. When the mounting frame 41 is provided with slide rails 411, one or more slide rails 411 in the mounting frame 41 are used to form a sliding cooperation with the sliders 421 on the same support leg 42. Specifically, in this embodiment, each support leg 42 is fixedly connected to four sliders 421, and the mounting bracket 41 is connected to each support leg 42 through two slide rails 411, that is, each slide rail 411 slides in cooperation with the two sliders 421 on the support leg 42.

[0061] When a patient stands in the detection position of the medical imaging device, the patient's front-back direction can be parallel to the second axis, the patient's left-right direction can be parallel to the first axis, and the patient's height direction can be parallel to the third axis. The detection position of the medical imaging device is the designated position where the patient must stand when the device is used to scan them.

[0062] When the medical imaging device of this application is used to examine a patient, the patient can remain standing. The third drive mechanism 4 drives the scanning unit 1 to move vertically, raising the scanning unit 1 to the position where the patient needs to be examined. The first drive mechanism 2 can drive the scanning unit 1 to rotate in the back-and-forth direction, and the second drive mechanism 3 can drive the scanning unit 1 to rotate in the left-and-right direction, so that the scanning area of ​​the scanning unit 1 covers the patient's lesion area and avoids the high-density area around the lesion area, thereby acquiring high-quality medical imaging information.

[0063] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the invention without departing from the principles and spirit of the invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A medical imaging device, characterized in that, include: The scanning unit (1) is used to scan the object to be scanned; A first drive mechanism (2) is connected to the scanning unit (1) and is used to drive the scanning unit (1) to rotate around a first axis; The second driving mechanism (3) is connected to the scanning unit (1) or the first driving mechanism (2) to directly drive the scanning unit (1) or indirectly drive the scanning unit (1) to rotate around the second axis through the first driving mechanism (2); The third drive mechanism (4) is connected to the second drive mechanism (3) or the first drive mechanism (2) and indirectly drives the scanning unit (1) to move along the third axis through the second drive mechanism (3) or the first drive mechanism (2); The first axis, the second axis, and the third axis intersect.

2. The medical imaging device according to claim 1, characterized in that, The third drive mechanism (4) includes a mounting frame (41), a plurality of legs (42) connected to the mounting frame (41), and a third drive assembly (43) mounted on the legs (42); the legs (42) abut against the ground to support the mounting frame (41), and the first drive mechanism (2), the second drive mechanism (3), and the scanning unit (1) are directly or indirectly mounted on the mounting frame (41); the third drive assembly (43) is used to drive the mounting frame (41) to move along a third axis; And / or, the scanning unit (1) is the scanning unit of a CT scanner.

3. The medical imaging device according to claim 2, characterized in that, The third drive assembly (43) includes a lead screw (431) and a motor (432). The lead screw (431) is connected to the mounting bracket (41) and is used to drive the mounting bracket (41) to move synchronously. The motor (432) drives the lead screw (431) to move along the third axis. And / or, the third axis is a vertical axis, and the third drive assembly (43) drives the scanning unit (1) to move vertically to achieve vertical scanning.

4. The medical imaging device according to claim 2, characterized in that, The support leg (42) is provided with a slider (421), and the mounting bracket (41) is provided with a slide rail (411), or the support leg (42) is provided with a slide rail (411), and the mounting bracket (41) is provided with a slider (421); the slider (421) slides in cooperation with the corresponding slide rail (411) to guide the movement path of the mounting bracket (41).

5. The medical imaging device according to claim 2, characterized in that, The second drive mechanism (3) includes a second drive assembly (31) mounted on the mounting bracket (41) and a rotating frame (32) connected to the second drive assembly (31). The second drive assembly (31) drives the rotating frame (32) to rotate along a second axis.

6. The medical imaging device according to claim 5, characterized in that, The second drive assembly (31) includes a second transmission group (311), a second drive member (312), and a second rotating shaft (313) fixedly connected to the rotating frame (32). The second drive member (312) drives the second rotating shaft (313) to rotate through the second transmission group (311), and the rotation axis of the second rotating shaft (313) forms the second axis.

7. The medical imaging device according to claim 6, characterized in that, It also includes a first rotating shaft (22), which is connected to the scanning unit (1) and the second driving assembly (31) respectively. The first rotating shaft (22) is used to drive the scanning unit (1) to rotate around the second axis under the drive of the second driving assembly (31); the axis of the first rotating shaft (22) intersects the second axis. And / or, the second transmission assembly (311) includes a second master gear (3111) connected to the second drive member (312) and a second driven gear (3112) connected to the second rotating shaft (313), the second master gear (3111) meshing with the second driven gear (3112), and the number of teeth of the second master gear (3111) being less than the number of teeth of the second driven gear (3112).

8. The medical imaging device according to claim 7, characterized in that, The first driving mechanism (2) includes the first rotating shaft (22) and a first driving assembly (21) for driving the first rotating shaft (22) to rotate along the first axis. The first rotating shaft (22) drives the scanning part (1) to rotate synchronously along the first axis. The rotation axis of the first rotating shaft (22) forms the first axis.

9. The medical imaging device according to claim 8, characterized in that, The first drive assembly (21) includes a first drive member (211) and a first transmission group (212). The first drive member (211) drives the first rotating shaft (22) to rotate along the first axis through the first transmission group (212).

10. The medical imaging device according to claim 9, characterized in that, The first drive member (211) is mounted on the rotating frame (32); the first transmission group (212) includes a first main gear (2121) connected to the first drive member (211) and a first driven gear (2122) connected to the first rotating shaft (22), the first main gear (2121) meshes with the first driven gear (2122), and the number of teeth of the first main gear (2121) is less than the number of teeth of the first driven gear (2122).

11. The medical imaging device according to claim 7, characterized in that, The rotating frame (32) includes a first end and a second end opposite to each other along the second axis. The second drive assembly (31) is disposed between the first end and the second end of the rotating frame (32). The first end is provided with the first rotating shaft (22), and the first rotating shaft (22) is used to support the scanning unit (1). The second end is provided with a counterweight assembly (321), and the counterweight assembly (321) is used to balance the force exerted by the scanning unit (1) on the rotating frame (32).

Images