A medical imaging apparatus

Abstract

The present application relates to a kind of medical imaging devices, which includes: a pair of first support base, it is arranged spaced apart relative to each other;A pair of detection device, it is respectively movably mounted to each first support base, the pair of detection device is arranged symmetrically about each other and its side facing each other is provided as incident plane, each detection device can be rotated about vertical direction and move in horizontal plane relative to corresponding first support base, to adjust the detection device to desired position and orientation;Second support base, it is arranged between the pair of first support base, support platform for the subject to stand to make the subject be located between the pair of detection device is provided on the second support base, the support platform can be rotated about vertical direction and move in vertical plane relative to corresponding second support base, to make the subject move relative to the pair of detection device with desired trajectory.

Description

Technical Field

[0001] This invention relates to the field of nuclear medicine imaging technology, and more particularly to a medical imaging device. Background Technology

[0002] Single-photon emission computed tomography (SPECT) is a technique for tomographic imaging of radiopharmaceuticals (such as Tc-99m) that emit only a single gamma photon with each decay. Within a certain field of view, SPECT uses the gamma rays emitted by the radiopharmaceutical (such as Tc-99m) injected into the body to reconstruct images with computer assistance, thereby showing the location of the radiopharmaceutical and further reflecting relevant pathological information of the human body.

[0003] Existing variable-angle dual-probe SPECT may include components such as detectors, rotating gantry, rotation and translation devices, patient bed, computer, and auxiliary systems. The SPECT detector can rotate 360° or 180° around the subject to acquire a series of planar projection images from multiple angles and directions, which are then reconstructed by a computer image processing system to obtain planar or three-dimensional reconstructed images.

[0004] The rotating gantry can be installed perpendicular to the ground. The detectors are mounted vertically to the gantry via a rotation and translation device, and the patient bed is installed on the ground in a direction perpendicular to the gantry. With the help of the rotating gantry and rotation and translation device, the SPECT detectors can rotate 360° or 180° around the patient lying on the bed to acquire images. Because the detectors, rotating gantry, rotation and translation device, and patient bed are large and heavy—typically weighing hundreds of kilograms each—the total weight of the SPECT exceeds several tons. Therefore, existing variable-angle dual-probe SPECT systems require a large amount of space for installation and use, and also have high requirements for the room's load-bearing capacity. Hospital departments often cannot use these systems because they do not meet these requirements.

[0005] Existing variable-angle dual-probe SPECT systems typically involve highly sophisticated and complex rotating gantry, rotation and translation devices, and patient bed structures with numerous components. This results in manufacturing costs reaching millions of RMB, and the regular maintenance and repairs required during use also lead to high operating costs. These high manufacturing and maintenance costs significantly hinder the widespread adoption of the equipment, particularly in remote and impoverished areas and low-income hospitals. Furthermore, patients also face high costs associated with related examinations.

[0006] Existing variable-angle dual-probe SPECT requires multiple movements of the detector, rotating gantry, rotating and translating device, and patient bed during each examination. However, due to the compact and complex nature of the equipment, any malfunction in any component can cause the equipment to malfunction, leading to potential equipment failures and affecting reliability.

[0007] Existing variable-angle dual-probe SPECT requires the patient to lie on a bed during use. On the one hand, the detection efficiency of SPECT is reduced due to the blocking effect of the bed board on gamma rays, thus prolonging the patient's examination time. On the other hand, the imaging quality is affected by the scattering effect of the bed board on gamma rays.

[0008] Because existing variable-angle dual-probe SPECTs rely on a rotation and translation mechanism to keep the probe constantly moving relative to the rotating frame during use, the probe's position is inevitably subject to some deviation due to unavoidable machining errors. Furthermore, due to the probe's considerable weight, it may not be perfectly vertically positioned relative to the rotating frame, and its position may change during movement. Additionally, the detector, rotating frame, and rotation and translation mechanism will inevitably tilt downwards due to gravity; for example, existing variable-angle dual-probe SPECTs can tilt downwards by more than 15 millimeters. For these reasons, the accuracy of existing variable-angle dual-probe SPECTs is somewhat affected.

[0009] Existing variable-angle dual-probe SPECT involves rotating the two detectors around the patient lying on the bed to acquire tomographic images. However, due to mechanical reasons, the actual position of the detectors will deviate from the theoretical position of the detector imaging algorithm. This inevitably leads to artifact problems and further affects the image quality.

[0010] The components of the existing variable angle dual-probe SPECT are constantly in motion during operation. Therefore, in the event of misoperation or malfunction of the motion control system, interference, collision and compression can easily occur between different components. For example, the detector may collide with the ground or the patient bed may collide with the detector, which may lead to equipment damage or safety hazards, such as injury.

[0011] Therefore, there is a need in the art for a medical imaging device that can at least solve some of the above-mentioned technical problems. Summary of the Invention

[0012] The present invention aims to provide a medical imaging device that can at least solve some of the above-mentioned technical problems.

[0013] According to one aspect of the present invention, a medical imaging apparatus is provided, the medical imaging apparatus comprising: a pair of first support bases arranged at a distance from each other; a pair of detection devices movably mounted to each of the first support bases, the pair of detection devices being arranged symmetrically about each other and having their sides facing each other as incident surfaces, each detection device being rotatable about a vertical direction and movable in a horizontal plane relative to a corresponding first support base to adjust the detection device to a desired position and orientation; and a second support base disposed between the pair of first support bases, the second support base having a support platform for a subject to stand on so that the subject is positioned between the pair of detection devices, the support platform being rotatable about a vertical direction and movable in a vertical plane relative to a corresponding second support base to move the subject relative to the pair of detection devices along a desired trajectory.

[0014] Compared to existing technologies, the medical imaging device of this invention uses a support platform located between a pair of detection devices for the subject to stand on. The detection devices on both sides of the subject then perform the detection. Gamma photons emitted from the subject's body can pass directly through the incident surface of the detection devices without being blocked by structures such as existing patient beds, thereby increasing the detection efficiency and reducing the required examination time. Secondly, the medical imaging device of this invention eliminates the patient bed and other structures found in existing technologies, significantly reducing the overall size and weight of the device, lowering costs, and reducing room requirements. Finally, the medical imaging device of this invention has a simple structure and greatly improved measurement reliability.

[0015] Preferably, the probe is configured to move before the imaging operation, and the support stage is configured to move during the imaging operation. Therefore, the medical imaging apparatus of the present invention keeps the probe stationary during the imaging operation while only the support stage moves. This ensures that the relative position between the two probe devices remains constant throughout the imaging operation, thereby avoiding measurement deviations caused by probe movement and improving measurement accuracy. Furthermore, keeping the probe stationary during the imaging operation also avoids image artifacts caused by probe movement, further improving the quality of the acquired images.

[0016] Preferably, the detection device includes: a translation component and a first rotation component, one of which is mounted to the first support base and the other is mounted above it; and a probe mounted above the other of the translation component and the first rotation component. Therefore, the medical imaging device of the present invention moves a pair of detection devices by arranging the translation component and the first rotation component vertically, and the support platform located between the pair of detection devices moves the subject being examined. Combined with the elimination of the existing rotating frame and patient bed arrangement, and the fact that the detection devices remain stationary during imaging, the detection device of the present invention will not experience undesirable tilting due to gravity, and will not cause motion interference or accidental collisions between components during measurement.

[0017] Preferably, the translation assembly includes a lateral movement mechanism and a longitudinal movement mechanism, one of which is mounted on top of the other.

[0018] Preferably, the probe includes: a mounting frame and a rear cover, the rear cover being mounted to the mounting frame to cooperate with the mounting frame to form a mounting space; a collimator being mounted to the front side of the mounting frame to form an incident surface; a detector being located within the mounting space and fixed to the rear side of the collimator; and a pair of contour scanning modules being respectively mounted to opposite sides of the collimator and extending forward beyond the collimator.

[0019] Preferably, the probe further includes a signal acquisition module, a signal processing module, a communication module, a power supply module, and a fan located within the installation space and fixed to the rear side of the detector. The power supply module is electrically connected to the signal acquisition module, the signal processing module, the communication module, and the fan. The signal processing module is electrically connected to the signal acquisition module and the communication module.

[0020] Preferably, the longitudinal movement mechanism includes: a longitudinal drive component whose output end performs rotational motion; a longitudinal transmission component connected to the output end of the longitudinal drive motor and converting the rotational motion output by the longitudinal drive motor into longitudinal linear motion; and a longitudinal connecting plate fixed to the longitudinal transmission component and following the longitudinal transmission component in longitudinal linear motion.

[0021] Preferably, the lateral movement mechanism includes: a lateral drive component whose output end performs rotational motion; a lateral transmission component connected to the output end of the lateral drive motor and converting the rotational motion output by the lateral drive motor into lateral linear motion; and a lateral connecting plate fixed to the lateral transmission component and following the lateral transmission component in performing lateral linear motion.

[0022] Preferably, the first rotating assembly includes a rotary drive motor and a rotary drive component fixed to the rotary drive motor.

[0023] Preferably, the support platform is installed to the second support base via a lifting assembly and a second rotating assembly, wherein one of the lifting assembly and the second rotating assembly is installed to the second support base and the other is installed above it.

[0024] Other features and advantages of the present invention will partly become apparent to those skilled in the art upon reading this application, and partly will be described in conjunction with the accompanying drawings in the detailed description below. Attached Figure Description

[0025] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings, wherein:

[0026] Figure 1 This is a front view of the medical imaging apparatus according to the present invention;

[0027] Figure 2 This is an isometric view of the first support base and corresponding detection device of the medical imaging device according to the present invention after the back cover has been removed.

[0028] Figure 3 This is a left view of the first support base and corresponding detection device of the medical imaging device according to the present invention after the back cover has been removed;

[0029] Figure 4 This is a right view of the first support base and corresponding detection device of the medical imaging apparatus according to the present invention.

[0030] Figure 5 This is a left view of the first support base and corresponding detection device of the medical imaging apparatus according to the present invention.

[0031] Figure 6 This is a rear view of the first support base and corresponding detection device of the medical imaging device according to the present invention.

[0032] Figure 7 This is an exploded view of the first support base and corresponding detection device of the medical imaging apparatus according to the present invention.

[0033] Figure 8 This is an isometric view of the second support base and support platform of the medical imaging device according to the present invention;

[0034] Figure 9 This is a front view of the second support base and support platform of the medical imaging device according to the present invention;

[0035] Figure 10 This is a right view of the second support base and support platform of the medical imaging device according to the present invention;

[0036] Figure 11This is a right view of the second support base and support platform of the medical imaging device according to the present invention, showing the internal components of the inner support cylinder and the outer support cylinder;

[0037] Figure 12 This is a front view of the second support base and support platform of the medical imaging device according to the present invention, showing the internal components of the inner support cylinder and the outer support cylinder.

[0038] Figure label:

[0039] 100 - Medical imaging device; 10 - First support base; 20 - Detection device; 20A - Translation assembly; 21 - Longitudinal movement mechanism; 211 - Longitudinal drive component; 211a - Longitudinal drive motor; 211b - Longitudinal drive motor gear; 212 - Longitudinal transmission component; 212a - Longitudinal lead screw gear; 212b - First longitudinal lead screw bearing seat; 212c - Second longitudinal lead screw bearing seat; 212d - Longitudinal lead screw; 212e - Longitudinal lead screw nut connector; 2 13-Longitudinal connecting plate; 214-Longitudinal slider assembly; 215-Longitudinal guide rail; 22-Transverse movement mechanism; 221-Transverse drive component; 221a-Transverse drive motor; 221b-Transverse drive motor gear; 222-Transverse transmission component; 222a-Transverse lead screw gear; 222b-First transverse lead screw bearing seat; 222c-Second transverse lead screw bearing seat; 222d-Transverse lead screw; 222e-Transverse lead screw nut connector; 223-Transverse connecting plate; 22 4-Horizontal slider assembly; 225-Horizontal guide rail; 20B-First rotating assembly; 231-Rotation drive motor; 232-Rotation drive component; 20C-Probe; 241-Mounting frame; 242-Rear cover; 243-Collider; 244-Detector; 245-Contour scanning module; 246-Signal acquisition module; 247-Signal processing module; 248-Communication module; 249-Power supply module; 250-Fan; 30-Second support base; 40-Support platform; 5 0A-Lifting assembly; 51-Lifting motor; 52-Lifting transmission component; 521-First lifting screw bearing seat; 522-Second lifting screw bearing seat; 523-Lifting screw; 524-Lifting screw nut connector; 53-Lifting connection part; 531-Inner support cylinder; 532-Outer support cylinder; 533-Lifting connection plate; 541-Lifting guide rail; 542-Lifting slider assembly; 50B-Second rotating assembly; 55-Rotation drive motor; 56-Rotation drive component. Detailed Implementation

[0040] A schematic representation of the medical imaging apparatus disclosed in this invention will now be described in detail with reference to the accompanying drawings. Although the drawings are provided to illustrate some embodiments of the invention, they are not necessarily drawn to the dimensions of the specific embodiments, and certain features may be enlarged, removed, or partially cut to better illustrate and explain the disclosure of the invention. Some components in the drawings may be repositioned according to actual needs without affecting the technical effect. The phrase "in the drawings" or similar expressions appearing in the specification do not necessarily refer to all drawings or examples.

[0041] Certain directional terms used in the description of the accompanying drawings below, such as “inner,” “outer,” “above,” “below,” and other directional terms, will be understood to have their normal meaning and refer to those directions as normally viewed in the accompanying drawings. Unless otherwise specified, the directional terms used in this specification are generally in accordance with the conventional directions understood by those skilled in the art.

[0042] The terms “first,” “first,” “second,” “second,” and similar terms used in this invention do not indicate any order, quantity, or importance, but are used to distinguish one component from others.

[0043] Reference Figures 1 to 12 The present invention provides an exemplary medical imaging device 100, such as a SPECT device, which can be used to detect and collect radiation, such as gamma rays, generated by radioactive materials injected into a subject, and to perform imaging based on this information to display the physiological functions of the subject or a portion thereof. Compared to conventional medical imaging devices 100, the medical imaging device 100 provided by the present invention has high detection efficiency, high measurement accuracy, high imaging quality, and high safety. As shown in the figure, the medical imaging device 100 of the present invention may include a pair of first support bases 10, a pair of detection devices 20, a second support base 30, and a support stage 40.

[0044] Specifically, the first support base 10 and the second support base 30 can be made of stainless steel or special steel and can be installed on the floor of the department or on the same horizontal plane of the department. The pair of first support bases 10 can be arranged at a distance from each other to allow the first support base 10 for the subject to stand on to be positioned between the pair of first support bases 10, preferably in the middle of the pair of first support bases 10, thereby further allowing the subject to be centrally positioned between the pair of detection devices 20 located on the pair of first support bases 10. Understandably, the subject can be a human, other living organism, or an inanimate object. The incident surfaces of the pair of detection devices 20 facing each other can thus both face the subject to be examined, allowing for the detection of the subject.

[0045] The detection device 20 can rotate about the vertical direction and move on the horizontal plane relative to the corresponding first support base 10. In this embodiment, the vertical direction refers to... Figure 1 The vertical direction in the middle, the horizontal plane is Figure 1 The plane is perpendicular to the plane shown in the attached figure. Before imaging operation of the medical imaging device 100, such as during the detection or calibration phase, the operator can rotate and / or turn the detection device 20 relative to the first support base 10 as needed. In addition, a support platform 40, for example, made of a thin plate structure and a high-strength material such as aluminum alloy or stainless steel, may be provided above the second support base 30. This support platform 40 may extend beyond the second support base 30 in a direction transverse to the second support base 30 until it approaches the first support base 10 on both sides, so as to provide sufficient standing area for the subject.

[0046] like Figures 1 to 3 As shown, the support stage 40 is circular. In other embodiments, the support stage 40 can be various shapes such as quadrilateral, ellipse, and hexagon, preferably a regular polygon, and more preferably circular. The support stage 40 can be rotated relative to the second support base 30 about the vertical direction and / or moved in the vertical plane to position the object under inspection in the most advantageous imaging position and move it relative to the pair of detection devices 20 along a desired trajectory during imaging operations.

[0047] For example, before the medical imaging device 100 of the present invention performs imaging operations, such as static acquisition, dynamic acquisition, whole-body scanning or tomographic image acquisition, a pair of detection devices 20 can be rotated and / or moved relative to the corresponding first support base 10, so that the pair of detection devices 20 are close to the surface of the object being examined, such as the human body surface, thereby improving the detection efficiency and spatial resolution of subsequent imaging operations.

[0048] When the medical imaging device 100 of the present invention performs static acquisition, the support platform 40 remains stationary relative to the second support base 30, a pair of detection devices 20 remain stationary relative to their respective first support bases 10, and the support platform 40 together with the object under examination on it remains stationary relative to the detection devices 20, thereby the detection devices 20 acquire projection data of the target area of ​​the object under examination.

[0049] When the medical imaging device 100 of the present invention performs dynamic acquisition, it is similar to static acquisition. The support stage 40 and the detection device 20 remain relatively stationary, and the detection device 20 acquires multiple projection data of the target area of ​​the subject at predetermined time intervals.

[0050] When the medical imaging device 100 of the present invention performs a whole-body scan, the detection device 20 remains stationary, the support platform 40 moves in a vertical plane, and the subject on the support platform 40 moves accordingly in a vertical plane relative to the detection device 20, thereby the detection device 20 scans the whole body of the subject.

[0051] When the medical imaging apparatus 100 of the present invention performs tomographic acquisition, the detection device 20 remains stationary, and the support platform 40, together with the subject on it, rotates relative to the detection device 20 about the vertical direction, thereby allowing the detection device 20 to perform tomographic acquisition of the subject. When whole-body tomographic acquisition of the subject is required, the support platform 40 can rotate relative to the detection device 20 about the vertical direction and move in the vertical plane. For tomographic acquisition of specific parts of the subject, the two detection devices 20 can be angled relative to each other, such as 90 degrees and 180 degrees, before the imaging operation to reduce the number of rotations of the support platform 40. In other embodiments, the operator can control the two detection devices 20 to be at any angle relative to each other, such as 76 degrees, 90 degrees, or 180 degrees, as needed.

[0052] In operations such as whole-body scanning and tomographic acquisition where the detection device 20 moves relative to the subject, the horizontal dimension (width) of the subject within the field of view of the detection device 20 changes, meaning its distance relative to the detection device 20 changes. Therefore, the support stage 40 can rotate one full turn relative to the detection device 20 before the imaging operation. After determining the maximum horizontal dimension of the subject, a pair of detection devices 20 are fixed based on this maximum horizontal dimension. Then, the support stage 40 is moved to perform the subsequent imaging operation. Alternatively, if the distance between the subject on the support stage 40 and the detection device 20 changes during the imaging operation, the support stage 40 can stop moving. The detection device 20 then moves to adjust to be close to the surface of the subject, and the support stage 40 continues to move to perform the imaging operation. This process is repeated until the imaging operation is completed.

[0053] To ensure the accuracy of the movement of the detection device 20 during tomographic acquisition and whole-body scanning, the medical imaging device 100 can periodically test and calibrate the detection device 20, such as energy, linearity, and uniformity calibration or testing. If the requirements are not met, the detection device 20 can be rotated and moved relative to the corresponding first support base 10 for appropriate calibration or testing.

[0054] Optionally, the detection device 20 may include a translation assembly 20A and a first rotation assembly 20B mounted to the first support base 10, and a probe 20C mounted to the translation assembly 20A or the first rotation assembly 20B, such that the probe 20C can rotate relative to the first support base 10 about the vertical direction and move in the horizontal plane, as shown below. Figures 2 to 7As shown, the translation component 20A can be mounted to the first support base 10, the first rotation component 20B is mounted on the translation component 20A, and the probe 20C is mounted on the first rotation component 20B. In other embodiments, the first rotation component 20B can be arranged on the first support base 10, and the translation component 20A can be arranged on the first rotation component 20B, as long as the probe 20C mounted at the top can achieve translational and rotational movements relative to the first support base 10.

[0055] like Figures 1 to 7 As shown, the translation component 20A may include a lateral movement mechanism 22 and a longitudinal movement mechanism 21. In this embodiment, lateral movement refers to... Figure 1 The interior and exterior orientations of the page containing the attached image; vertical orientation refers to the orientation of the image. Figure 1 The longitudinal movement mechanism 21 can be mounted to the first support base 10, and the transverse movement mechanism 22 can be mounted above the longitudinal movement mechanism 21. Correspondingly, the first rotating assembly 20B can be mounted above the transverse movement mechanism 22, so that the probe 20C on the first rotating assembly 20B can move laterally and / or longitudinally and / or rotate relative to the first support base 10. In other embodiments, the mounting positions of the longitudinal movement mechanism 21 and the transverse movement mechanism 22 can be interchanged.

[0056] like Figures 1 to 7 As shown, probe 20C may include a mounting frame 241, a rear cover 242, a collimator 243, a detector 244, and a pair of contour scanning modules 245. The mounting frame 241 can be mounted to the first rotating assembly 20B. The rear cover 242, made of a material with sufficient strength such as stainless steel or fiberglass, is mounted to the rear side of the mounting frame 241, forming a closed mounting space with the frame. Various components of probe 20C are then mounted within this mounting space. For example, collimator 243 may be made of a material with gamma-ray shielding capabilities, such as lead or tungsten, and is mounted to the front side of the mounting frame 241, i.e., the side of probe 20C facing another probe 20C. This positions the object under examination between the collimators 243 of one probe 20C and the collimators 243 of the other probe 20C, allowing gamma rays at a certain angle within a certain field of view to pass through each collimator 243.

[0057] Detector 244 is fixed to the rear side of collimator 243 within the mounting space to convert gamma rays passing through collimator 243 into pulse signals with certain characteristics. These pulse signals reflect the position coordinates and energy of the acquired gamma rays. Exemplarily, detector 244 can be a scintillator detector 244, a semiconductor detector 244, or a gas detector 244. Taking scintillator detector 244 as an example, detector 244 may include a crystal, a light guide, a photomultiplier tube, and an analog positioning calculation circuit. The crystal is located behind collimator 243 and can emit scintillating photons when irradiated by gamma rays. The light guide is installed between the crystal and the photomultiplier tube to transmit the scintillating photons to the photomultiplier tube, which then proportionally converts the scintillating photons into electrical pulse signals. The analog positioning calculation circuit can be connected to the photomultiplier tube to convert the electrical pulse signals output by the photomultiplier tube into position signals determining the scintillation point of the crystal and energy signals of the incident gamma rays.

[0058] A pair of contour scanning modules 245 can be respectively mounted on opposite sides of collimator 243, as shown in the figure, mounted on the upper and lower sides of collimator 243 and extending forward beyond collimator 243, to scan the contour of the object under inspection, thereby allowing probe 20C to be as close as possible to the object under inspection before imaging operation. Exemplarily, the contour scanning module 245 can be a detector with human contour scanning function, such as an infrared detector, an acoustic detector, or a visual detector.

[0059] Optionally, the probe 20C may also include a signal acquisition module 246, a signal processing module 247, a communication module 248, a power supply module 249, and a fan 250, which are installed in the mounting space and fixed to the rear of the detector 244. The signal acquisition module 246 converts the analog signal output by the detector 244 into a digital signal. The signal processing module 247 is electrically connected to the signal acquisition module 246 and the communication module 248 to process the digital signal output by the signal processing module 247 and output it to the communication module 248. The communication module 248 can communicate with an external control device, such as via Wi-Fi or Bluetooth, to send acquired data to the external control device and receive external control commands to perform various actions.

[0060] The power supply module 249 can be electrically connected to electronic devices within the installation space, such as the signal acquisition module 246, signal processing module 247, communication module 248, and fan 250, thereby supplying power to these electronic devices. Considering that various electronic devices will generate heat within the closed installation space, two fans 250 can be arranged on the upper and lower sides of the detector 244 to enhance the heat dissipation effect on the electronic devices by creating air convection between the two fans 250.

[0061] Preferably, such as Figure 3The detector 244 shown includes two data acquisition modules and two power supply modules 249, which are arranged vertically and horizontally spaced relative to each other. Providing two data acquisition modules improves the accuracy and efficiency of data acquisition, while providing two power supply modules 249 ensures safe and efficient power supply to each electron.

[0062] Optionally, such as Figures 2 to 7 As shown, the longitudinal movement mechanism 21 may include a longitudinal drive component 211, a longitudinal transmission component 212, and a longitudinal connecting plate 213. Specifically, a slot may be provided on the side of the first support base 10 adjacent to the detection device 20, i.e., its upper side. The longitudinal drive component 211 may be fixed, for example, by screws, within the slot of the first support base 10, thereby reducing the size of the medical imaging device 100 and increasing its aesthetics. The longitudinal drive component 211 may include a longitudinal drive motor 211a and a longitudinal drive motor gear 211b fixed to the output end of the longitudinal drive motor 211a. The longitudinal drive motor 211a may be an electrically controlled rotating motor.

[0063] The longitudinal transmission component 212 is generally arranged along a horizontal plane and may include a longitudinal lead screw gear 212a meshing, for example, vertically meshing, with the longitudinal drive motor gear 211b; a first longitudinal lead screw bearing seat 212b and a second longitudinal lead screw bearing seat 212c fixed inside the opening of the first support base 10; a longitudinal lead screw 212d supported at both ends by the first longitudinal lead screw bearing seat 212b and the second longitudinal lead screw bearing seat 212c and connected to the output end of the longitudinal lead screw gear 212a; and a longitudinal lead screw nut connector 212e located between the first longitudinal lead screw bearing seat 212b and the second longitudinal lead screw bearing seat 212c and sleeved onto the longitudinal lead screw 212d. It is understood that, in addition to the longitudinal lead screw 212d and the longitudinal lead screw nut connector 212e, the longitudinal transmission component 212 may also employ other components that convert rotary motion into linear motion, and the first longitudinal lead screw bearing seat 212b and the second longitudinal lead screw bearing seat 212c may also be selected from other bearing seats capable of supporting the rotating body of the lead screw.

[0064] In this manner, the longitudinal drive motor 211a is controlled to rotate and drives the longitudinal drive motor gear 211b to rotate. The longitudinal drive motor gear 211b then drives the longitudinal lead screw gear 212a, whose rotation axis is perpendicular to the longitudinal drive motor gear 211b. The longitudinal lead screw gear 212a drives the longitudinal lead screw 212d to rotate relative to the first longitudinal lead screw bearing seat 212b and the second longitudinal lead screw bearing seat 212c. The longitudinal lead screw nut connector 212e, located on the outer periphery of the longitudinal lead screw 212d, can move along the thread on the outer periphery of the longitudinal lead screw 212d, thereby moving along the axis of the longitudinal lead screw 212d, i.e., performing longitudinal linear motion.

[0065] The longitudinal connecting plate 213 can be made of high-strength steel such as stainless steel or special steel and fixed, for example, to the upper side of the longitudinal lead screw nut connector 212e by screws. Therefore, the longitudinal connecting plate 213 can achieve longitudinal linear movement by being driven by the longitudinal drive component 211 via the longitudinal transmission component 212. Considering that the longitudinal connecting plate 213 needs to support the transverse movement mechanism 22 described later, the longitudinal connecting plate 213 can extend in the horizontal plane to a size much larger than, for example, covering the longitudinal lead screw nut connector 212e. Therefore, a sliding engagement component can be provided between the longitudinal connecting plate 213 and the first support base 10 to improve the motion stability of the longitudinal connecting plate 213 relative to the first support base 10. For example, on the lower side of the longitudinal connecting plate 213, pairs of longitudinal slider groups 214, such as two sliders, may be provided on both sides of the longitudinal screw nut connector 212e. On the upper side of the first support base 10, longitudinal guide rails 215, which respectively cooperate with the pairs of longitudinal slider groups 214, may be provided on both sides of the longitudinal screw 212d. For example, the longitudinal guide rails 215 can pass through the corresponding longitudinal sliders and be connected to them. The longitudinal slider groups 214 and the longitudinal guide rails 215 may be made of high-strength steel such as stainless steel or special steel.

[0066] Similar to longitudinal movement mechanism 21, such as Figures 2 to 7 As shown, the lateral movement mechanism 22 may include a lateral drive component 221, a lateral transmission component 222, and a lateral connecting plate 223. Specifically, the lateral connecting plate 223 may be made of high-strength steel such as stainless steel or special steel and is arranged substantially parallel to the longitudinal connecting plate 213 at intervals, and may have through holes extending vertically. The longitudinal drive component 211 may pass through the through holes of the lateral connecting plate 223 and be fixed thereto, for example, by screws. The lateral drive component 221 may include a lateral drive motor 221a extending through the through holes of the lateral connecting plate 223 and a lateral drive motor gear 221b located below the lateral connecting plate 223 and fixed to the output end of the lateral drive motor 221a. The lateral drive motor 221a may be an electrically controlled motor.

[0067] The transverse transmission component 222 is generally arranged horizontally between the transverse connecting plate 223 and the longitudinal connecting plate 213. It may include a transverse lead screw gear 222a that meshes with, for example, the transverse drive motor gear 221b; a first transverse lead screw bearing seat 222b and a second transverse lead screw bearing seat 222c fixed to the lower side of the transverse connecting plate 223; a transverse lead screw 222d whose two ends are supported by the first transverse lead screw bearing seat 222b and the second transverse lead screw bearing seat 222c respectively and connected to the output end of the transverse lead screw gear 222a; and a transverse lead screw nut connector 222e located between the first transverse lead screw bearing seat 222b and the second transverse lead screw bearing seat 222c and sleeved onto the transverse lead screw 222d. Understandably, in addition to the transverse lead screw 222d and the transverse lead screw nut connector 222e, the transverse transmission component 222 may also be other components that convert rotary motion into linear motion, and the first transverse lead screw bearing housing 222b and the second transverse lead screw bearing housing 222c may also be other bearing housings capable of supporting the rotating body of the lead screw.

[0068] In this manner, the transverse drive motor 221a is controlled to rotate and drives the transverse drive motor gear 221b to rotate. The transverse drive motor gear 221b then drives the transverse lead screw gear 222a, whose rotation axis is perpendicular to the transverse drive motor gear 221b. The transverse lead screw gear 222a drives the transverse lead screw 222d to rotate relative to the first transverse lead screw bearing seat 222b and the second transverse lead screw bearing seat 222c. The transverse lead screw nut connector 222e located on the outer periphery of the transverse lead screw 222d can move along the thread line on the outer periphery of the transverse lead screw 222d, thereby moving along the axis of the transverse lead screw 222d, i.e., performing transverse linear motion.

[0069] The longitudinal connecting plate 213 can be fixed, for example, to the underside of the transverse lead screw nut connector 222e by screws. Therefore, the transverse connecting plate 223 can be driven by the transverse drive component 221 via the transverse transmission component 222 to achieve transverse linear motion relative to the longitudinal connecting plate 213. Considering that the first rotating assembly 20B (described later) needs to be supported above the transverse connecting plate 223, the transverse connecting plate 223 can extend horizontally to a size much larger than, for example, covering the transverse transmission component 222. Therefore, a sliding engagement component can be provided between the transverse connecting plate 223 and the longitudinal connecting plate 213 to improve the motion stability of the transverse connecting plate 223 relative to the longitudinal connecting plate 213. For example, a pair of transverse slider groups 224 (e.g., two sliders) can be provided on the upper side of the longitudinal connecting plate 213 on both sides of the transverse lead screw nut connector 222e, and transverse guide rails 225, respectively cooperating with the pair of transverse slider groups 224, can be provided on the lower side of the transverse connecting plate 223 on both sides of the transverse lead screw 222d. For example, the transverse guide rails 225 can pass through and connect to the corresponding transverse sliders. The transverse slider assembly 224 and the transverse guide rail 225 can be made of high-strength steel such as stainless steel and special steel.

[0070] Optionally, the first rotating assembly 20B may include a rotary drive motor 231 and a rotary drive component 232 linked to the rotary drive motor 231. For example... Figures 2 to 7 As shown, the rotary drive motor 231 can be fixed to the upper side of the transverse connecting plate 223, and the rotary drive component 232 can be fixed to the output end of the rotary drive motor 231 by screws. The probe 20C can be fixed to the upper side of the rotary drive component 232 so that the probe 20C can be driven to rotate relative to the transverse connecting plate 223 by the rotary drive motor 231 via the rotary drive component 232. The rotary drive motor 231 and the rotary drive component 232 can be constructed as a worm gear structure to make the medical imaging device 100 of the present invention compact, have a large transmission ratio, and have self-locking properties. Exemplarily, the rotary drive device can be a full-circumferential rotary reduction transmission mechanism with an integrated drive power source, and the rotary drive motor 231 can be a motor with electrically controlled rotation.

[0071] Optionally, the support platform 40 can be mounted to the second support base 30 via a lifting assembly 50A and a second rotating assembly 50B. For example... Figures 8 to 12As shown, the lifting assembly 50A can be mounted to the second support base 30, and the second rotating assembly 50B can be mounted on the lifting assembly 50A. In an embodiment not shown, the vertical mounting positions of the lifting assembly 50A and the second rotating assembly 50B can be interchanged. Therefore, the examinee standing on the support platform 40 can be raised, lowered, and rotated by the movement of the lifting assembly 50A and the second rotating assembly 50B, for example, by rotating the second rotating assembly 50B 360 degrees or 180 degrees, so that the medical imaging device 100 of the present invention can acquire a series of planar projection images of the examinee's body part from multiple angles and directions, and reconstruct transverse, coronal, and sagittal images through an external computer image processing system.

[0072] As shown in the figure, the lifting assembly 50A may include a lifting motor 51, a lifting transmission component 52, and a lifting connection part 53. The second support base 30 may have a slot inside, and the lifting motor 51 can be fixed in the slot of the second support base 30 with screws, so that the second rotating component 50B mounted above the lifting assembly 50A can move up and down via the lifting motor 51. For example, the lifting motor 51 may be a motor with electrically controlled rotation.

[0073] The lifting transmission component 52 can be arranged generally in a vertical direction. It may include a first lifting screw bearing seat 521 and a second lifting screw bearing seat 522 fixed to the second support base 30, a lifting screw 523 supported at both ends by the first lifting screw bearing seat 521 and the second lifting screw bearing seat 522 respectively and connected to the output end of the lifting motor 51, and a lifting screw nut connector 524 located between the first lifting screw bearing seat 521 and the second lifting screw bearing seat 522 and sleeved onto the lifting screw 523. It can be understood that, in addition to the lifting screw 523 and the lifting screw nut connector 524, the lifting transmission component 52 may also use other components that convert rotary motion into linear motion, and the first lifting screw bearing seat 521 and the second lifting screw bearing seat 522 may also be selected from other bearing seats with the ability to support the rotating body of the screw.

[0074] In this way, the lifting motor 51 is controlled to rotate and drives the lifting screw 523 to rotate. The lifting screw nut connector 524 located on the outer periphery of the lifting screw 523 can move along the thread line on the outer periphery of the lifting screw 523, thereby moving along the axis of the lifting screw 523, that is, moving up and down.

[0075] The lifting connection 53 may include an inner support cylinder 531 fixed to the second support base 30 to support the first lifting screw bearing seat 521 and / or the second lifting screw bearing seat 522, an outer support cylinder 532 fixed to the lifting screw nut connector 524 and housing the inner support cylinder 531, and a lifting connection plate 523 located at the top of the outer support cylinder 532 for supporting the second rotating assembly 50B. The inner support cylinder 531 and the outer support cylinder 532 may be made of high-strength materials such as stainless steel or special steel. As shown in the figure, the first lifting screw bearing seat 521 may be fixed to the upper side of the second support base 30, and the inner support cylinder 531 may be fixed to the first lifting screw bearing seat 521 surrounding the lifting screw 523 and the lifting screw nut connector 524 or fixed to the upper side of the second support base 30 surrounding the lifting transmission component 52 (not shown). The second lifting screw bearing seat 522 may be fixed to the inner top of the inner support cylinder 531 by screws. The outer support cylinder 532 can be fixed to the lifting screw nut connector 524 by screws passing through the inner support cylinder 531, so as to move up and down with the lifting screw nut connector 524.

[0076] To increase the motion stability of the outer support cylinder 532, a pair of cooperating lifting guide rails 541 and lifting slider assemblies 542 can be provided between the inner side of the outer support cylinder 532 and the outer side of the inner support cylinder 531. For example, as shown in the figure, a pair of lifting guide rails 541 can be radially opposed on the outer side of the inner support cylinder 531, and the lifting slider assemblies 542 corresponding to each lifting guide rail 541 can be provided on the inner side of the outer support cylinder 532. The lifting slider assemblies 542 and the lifting guide rails 541 can be made of high-strength steel such as stainless steel or special steel.

[0077] The second rotating assembly 50B may include a rotating drive motor 55 and a rotating drive component 56 linked to the rotating drive motor 55. For example... Figures 8 to 12 As shown, the rotary drive motor 55 can be fixed to the upper side of the lifting connecting plate 523 with screws, the rotary drive component 56 can be fixed to the output end of the rotary drive motor 55 with screws, and the support platform 40 can be fixed to the upper side of the rotary drive component 56 with screws, so that the support platform 40 can be driven to rotate relative to the lifting connecting plate 523 by the rotary drive motor 55 via the rotary drive component 56. Exemplarily, the rotary drive component 56 can be a full-circuit rotary reduction transmission mechanism with an integrated drive power source, and the rotary drive motor 55 can be a motor with electrically controlled rotation.

[0078] It should be understood that although this specification describes various embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0079] The above description is merely an illustrative embodiment of the present invention and is not intended to limit the scope of the invention. Any equivalent changes, modifications, and combinations made by those skilled in the art without departing from the concept and principles of the present invention should fall within the scope of protection of the present invention.

Claims

1. A medical imaging device (100), characterized in that, The medical imaging device (100) includes: a pair of first support bases (10) arranged at a distance from each other; A pair of detection devices (20) are movably mounted to each of the first support bases (10). The pair of detection devices (20) are arranged symmetrically about each other and their sides facing each other are set as incident surfaces. Each detection device (20) can rotate about the vertical direction and move on the horizontal plane relative to the corresponding first support base (10) to adjust the detection device (20) to the desired position and orientation. A second support base (30) is arranged between the pair of first support bases (10). The second support base (30) is provided with a support platform (40) for the subject to stand so that the subject is located between the pair of detection devices (20). The support platform (40) is capable of rotating about the vertical direction and moving in the vertical plane relative to the corresponding second support base (30) so that the subject to be inspected moves relative to the pair of detection devices (20) along a desired trajectory. The detection device (20) is configured to move before the imaging operation, and the support stage (40) is configured to move during the imaging operation; The detection device (20) includes: Translation component (20A) and first rotation component (20B), one of which is mounted to the first support base (10) and the other is mounted above it; The probe (20C) is mounted above the other of the translation assembly (20A) and the first rotation assembly (20B).

2. The medical imaging device (100) according to claim 1, characterized in that, The translation assembly (20A) includes a lateral movement mechanism (22) and a longitudinal movement mechanism (21), one of which is mounted on top of the other.

3. The medical imaging device (100) according to claim 1, characterized in that, The probe (20C) includes: Mounting frame (241) and back cover (242), the back cover (242) being mounted to the mounting frame (241) to cooperate with the mounting frame (241) to form an installation space; A collimator (243) is mounted to the front side of the mounting frame (241) to form an incident surface; The detector (244) is located within the mounting space and fixed to the rear side of the collimator (243); A pair of contour scanning modules (245) are respectively mounted on opposite sides of the collimator (243) and extend forward beyond the collimator (243).

4. The medical imaging device (100) according to claim 3, characterized in that, The probe (20C) also includes a signal acquisition module (246), a signal processing module (247), a communication module (248), a power supply module (249), and a fan (250) located in the installation space and fixed to the rear side of the detector (244). The power supply module (249) is electrically connected to the signal acquisition module (246), the signal processing module (247), the communication module (248), and the fan (250). The signal processing module (247) is electrically connected to the signal acquisition module (246) and the communication module (248).

5. The medical imaging device (100) according to claim 2, characterized in that, The longitudinal movement mechanism (21) includes: The longitudinal drive component (211) rotates at its output end; A longitudinal transmission component (212) is connected to the output end of a longitudinal drive motor (211a) and converts the rotational motion output by the longitudinal drive motor (211a) into longitudinal linear motion; The longitudinal connecting plate (213) is fixed to the longitudinal transmission component (212) and follows the longitudinal transmission component (212) to perform longitudinal linear motion.

6. The medical imaging device (100) according to claim 5, characterized in that, The lateral movement mechanism (22) includes: The transverse drive component (221) rotates at its output end; A transverse transmission component (222) is connected to the output end of a transverse drive motor (221a) and converts the rotational motion output by the transverse drive motor (221a) into transverse linear motion; A transverse connecting plate (223) is fixed to the transverse transmission component (222) and follows the transverse transmission component (222) in transverse linear motion.

7. The medical imaging device (100) according to claim 6, characterized in that, The first rotating assembly (20B) includes a rotary drive motor (231) and a rotary drive member (232) fixed to the rotary drive motor (231).

8. The medical imaging device (100) according to claim 1, characterized in that, The support platform (40) is mounted to the second support base (30) via a lifting assembly (50A) and a second rotating assembly (50B), wherein one of the lifting assembly (50A) and the second rotating assembly (50B) is mounted to the second support base (30) and the other is mounted above it.

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