SID mobile CBCT

Abstract

A variable SID movable CBCT comprises: a movable frame, a rotating mechanism, a linear motion mechanism, a tube, and a detector; the rotating mechanism comprises: a rotating member, the rotating member is mounted on the movable frame, and the rotating member can rotate around its axis; the linear motion mechanism and the detector are mounted on the rotating member, the tube is mounted on the linear motion mechanism, and the positions of the tube and the detector are opposite; the linear motion mechanism is used to adjust the distance between the tube and the detector. The linear motion mechanism drives the tube to move toward or away from the detector, thereby adjusting the distance between the tube and the detector, realizing the function of variable SID to adapt to different usage scenarios. The rotating mechanism drives the tube and the detector to rotate synchronously, so as to realize three-dimensional imaging.

Description

Technical Field

[0001] The present invention relates to the technical field of medical imaging equipment, and in particular to a variable SID movable CBCT. Background Art

[0002] Cone beam computed tomography (CBCT) is a cone beam projection computer reconstruction tomography device. Its principle is that the X-ray generator uses the specified radiation amount (usually the tube current is about 10 mA) to perform circular DR (digital projection) around the projection object, and then reconstructs the data obtained in the "intersection" after digital projection multiple times (180 to 360 times, depending on the product) in the computer, and then obtains a three-dimensional image after reconstructing. The projection principle of CBCT to obtain data is completely different from that of traditional sector scanning CT, but the algorithm principle of the later computer reconstruction is similar.

[0003] Most of the existing CT products in China (including oral CBCT) are large and expensive products fixed in the hospital's imaging department. They are fixed on the floor of the department and cannot be moved. Even if some small CTs can be moved, they are only limited to impact scans of the head (the CT aperture is very small), such as skull and brain CT. This affects its usage scenarios and is not widely used. Summary of the invention

[0004] The main technical problem solved by the present invention is to provide a movable and variable SID movable CBCT to expand its application scenarios.

[0005] The present application provides a variable SID movable CBCT, comprising: a movable frame, a rotating mechanism, a linear motion mechanism, a tube, and a detector; the rotating mechanism comprises: a rotating member, the rotating member is mounted on the movable frame, and the rotating member can rotate around its axis; the linear motion mechanism and the detector are mounted on the rotating member, the tube is mounted on the linear motion mechanism, and the positions of the tube and the detector are opposite; the linear motion mechanism is used to adjust the distance between the tube and the detector.

[0006] In one embodiment, it also includes: a cable retracting assembly, which has a cable retracting accommodating chamber, and the connecting cable of the ball tube is folded and placed in the cable retracting accommodating chamber, and can be pulled back and forth in the cable retracting accommodating chamber as the rotating member rotates.

[0007] In one embodiment, the cable retracting assembly includes: an upper arc baffle and a lower arc baffle, the circumferences of the upper arc baffle and the lower arc baffle are concentric with the circumference of the circumference of the rotating part, the upper arc baffle and the lower arc baffle are installed on the movable frame along the up and down directions, and the upper arc baffle and the lower arc baffle are arranged radially in sequence; the spacing space between the upper arc baffle and the lower arc baffle forms the cable retracting accommodating chamber.

[0008] In one embodiment, the cable retracting assembly further includes: a plurality of rollers, and the plurality of rollers are sequentially arranged along the circumference of the upper arc-shaped baffle plate and / or along the circumference of the lower arc-shaped baffle plate.

[0009] In one embodiment, it further includes: a rotation drive mechanism, wherein the rotation drive mechanism is used to provide power for the rotating member to rotate around its axis.

[0010] In one embodiment, the rotary drive mechanism includes: a driving motor, a bearing, and a transmission belt; a mounting hole is provided on the movable frame, the bearing is installed in the mounting hole, and a transmission belt sleeve position and a bearing mounting position are provided on one side of the axial direction of the rotating part from the outside to the inside, the bearing mounting position is installed on the bearing, and the transmission belt sleeve is arranged between the transmission belt sleeve position and the motor shaft of the driving motor.

[0011] In one embodiment, it further includes: a beam limiter, which is installed on the linear motion mechanism and is located at the emission end of the tube.

[0012] In one embodiment, the linear motion mechanism includes: a linear screw pair, and a linear motion drive motor; the ball tube and the beam limiter are both installed on the linear screw pair, and the linear screw pair is transmission-connected to the linear motion drive motor.

[0013] In one embodiment, the linear motion mechanism further includes: a slider and a slide rail, the slide rail is arranged along a straight line coinciding with the diameter of the rotating member, the slider is slidably mounted on the slide rail, and the ball tube is mounted on the slider.

[0014] In one embodiment, it further includes: a high voltage generator, which is installed on the circumferential surface of the rotating part and connected to the ball tube.

[0015] According to the above-mentioned variable SID movable CBCT, the linear moving mechanism drives the tube to move toward or away from the detector, thereby adjusting the distance between the tube and the detector, realizing the variable SID function to adapt to different usage scenarios. The rotating mechanism drives the tube and the detector to rotate synchronously, so as to realize three-dimensional imaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the principle of the variable SID mobile CBCT provided in this application;

[0017] Figure 2 The three-dimensional SID movable CBCT provided by this application Figure 1 ;

[0018] Figure 3 The three-dimensional SID movable CBCT provided by this application Figure 2 ;

[0019] Figure 4 An exploded view of the variable SID mobile CBCT provided in this application;

[0020] Figure 5 An exploded view of the rotary drive mechanism in the variable SID mobile CBCT provided in this application;

[0021] Figure 6 Schematic diagram of the structure of the linear motion mechanism in the variable SID movable CBCT provided in this application Figure 1 ;

[0022] Figure 7 Schematic diagram of the structure of the linear motion mechanism in the variable SID movable CBCT provided in this application Figure 2 ;

[0023] Figure 8 This is a schematic diagram of the structure of the brake casters in the movable frame of the SID-modified movable CBCT provided in this application. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are for making the present application better understood. However, those skilled in the art can easily recognize that some features can be omitted in different situations, or can be replaced by other elements, materials, methods. In some cases, some operations related to the present application are not shown or described in the specification, this is to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations according to the description in the specification and the general technical knowledge in the art.

[0025] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0026] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0027] The present application provides a variable SID mobile CBCT, which can be applied in the field of medical imaging. Specifically, it can be moved to the bedside of critically ill patients to perform imaging diagnosis on critically ill patients. Of course, it can also be applied to other scenarios, such as medium and large animals. The movable mode of the movable frame makes its application more flexible. The distance between the tube and the detector is adjusted by a linear moving mechanism to achieve variable SID. The tube and the detector are driven to rotate synchronously by a rotating mechanism to perform three-dimensional imaging.

[0028] See also Figure 1 As shown, the variable SID movable CBCT provided in this embodiment mainly includes: a movable frame 10, a rotating mechanism 20, a linear moving mechanism 30, a tube 40, and a detector 50.

[0029] The movable frame 10 has the function of being movable on the ground, see Figure 2 and Figure 3 As shown, two walking wheels 11 and two brake casters 12 are arranged at the bottom of the movable frame 10, and handles 13 are arranged on opposite sides of the movable frame 10. The movable frame 10 can be pushed to move by the handles 13, and can be braked and locked by the brake casters 12.

[0030] In this embodiment, both the walking wheel 11 and the brake caster 12 have a shock-absorbing structure. Here, the brake caster 12 is taken as an example for description. Figure 8As shown, the brake caster 12 includes: a rotating wheel 121, a mounting frame 122, a brake mechanism 123 and a shock absorbing structure 124, wherein the top of the mounting frame 122 is fixed on the movable frame 10, and the brake mechanism 123 is mounted on the mounting frame 122, and a certain friction force can be generated on the rotating wheel 121 through the brake mechanism 123 to brake. The shock absorbing structure 124 is installed between the rotating wheel 121 and the mounting frame 122, and the rotating wheel 121 is rotatably installed on the shock absorbing structure 124, and the shock absorbing structure 124 can be used to reduce the vibration of the rotating wheel 121 during driving, thereby improving the stability of the movement of the device.

[0031] The rotating mechanism 20 includes a rotating member 21 , which is mounted on the movable frame 10 and can rotate around its axis.

[0032] The linear motion mechanism 30 and the detector 50 are mounted on the rotating member 21, and the ball tube 40 is mounted on the linear motion mechanism 30, and the ball tube 40 and the detector 50 are opposite to each other. The ball tube 40 can emit X-rays, and the X-rays pass through the object to be detected (for example, a person, an animal, etc.), and the detector 50 captures the rays passing through the object to be detected, thereby performing imaging. The linear motion mechanism 30 is used to adjust the distance between the ball tube 30 and the detector 50.

[0033] Specifically, the linear motion mechanism 30 drives the tube 40 to move toward or away from the detector 50, thereby adjusting the distance between the tube 30 and the detector 50, realizing the function of variable SID to adapt to different usage scenarios. The rotating mechanism 20 drives the tube 40 and the detector 50 to rotate synchronously, so as to realize three-dimensional imaging.

[0034] In this embodiment, the radiation data captured by the detector 50 is collected by the data collector 51, the data collected by the data collector 51 is cached by the data cache module 52, stored by the data storage module 53, and the stored data is transmitted to the control unit 54. The control unit 54 can be operated through the operating console 54 to realize the coordinated cooperation of various mechanisms.

[0035] Continue to see Figure 2 and Figure 3 As shown, the variable SID movable CBCT provided in this embodiment further includes: a beam limiter 60 , which is installed on the linear moving mechanism 30 and can move synchronously with the tube 40 . The beam limiter 60 is located at the emission end of the tube 40 .

[0036] In this embodiment, a high-pressure oil tank 41 for connecting the positive and negative electrodes of the bulb 40, a high-voltage generator 42 for providing high voltage to the bulb 40, a cooling mechanism 43 for cooling the rotating member 21, and an energy storage device 44 for providing power to the high-voltage generator 42 and other power-consuming mechanisms are also provided on the circumferential surface of the rotating member 21. The cooling mechanism 43 can be cooled by air cooling, and the energy storage device 44 can be a rechargeable battery or the like.

[0037] In this embodiment, see Figure 6 and Figure 7 As shown, the linear motion mechanism 30 includes: a linear screw pair 31, and a linear motion drive motor 32; the ball tube 40 and the beam limiter 60 are both installed on the linear screw pair, and the linear screw pair 31 is transmission-connected to the linear motion drive motor 31. The linear screw pair 31 can convert the rotational motion output by the linear motion drive motor 31 into linear motion, thereby driving the ball tube 40 and the beam limiter 60 to move toward or away from the detector 50 to adjust the distance between the ball tube 40 and the detector 50.

[0038] In one embodiment, the linear motion mechanism 30 further includes: a slider 33 and a slide rail 34, the slide rail 34 is arranged along a straight line that coincides with the diameter of the rotating member 21, the slider 33 is slidably mounted on the slide rail 34, and the ball tube 40 and the restrainer 40 are mounted on the slider 33. By setting the slider 33 and the slide rail 34, the movement of the ball tube 40 can be guided.

[0039] The variable SID mobile CBCT provided in this embodiment further includes a rotation drive mechanism 70, which is used to provide power for the rotating member 21 to rotate around its axis.

[0040] See also Figure 3-Figure 5 As shown, the rotary drive mechanism 70 includes: a driving motor 71, a bearing 72, and a transmission belt 73. The movable frame 10 is provided with a mounting hole 15, and the bearing 72 is installed in the mounting hole 15. One side of the axial direction of the rotating member 21 is provided with a transmission belt sleeve position 212 and a bearing installation position 211 from the outside to the inside, and the bearing installation position 211 is installed on the bearing 72. The transmission belt 73 is sleeved between the transmission belt sleeve position 212 and the motor shaft of the driving motor 71. More specifically, a driving wheel 711 is also provided at the motor shaft end of the driving motor 71.

[0041] In one embodiment, the rotary drive mechanism 70 further includes a tensioner wheel 74 , through which the transmission belt 73 is tensioned between the drive motor 71 and the transmission belt sleeve location 212 .

[0042] The SID-variable mobile CBCT provided in this embodiment further includes: a cable retracting assembly, the cable retracting assembly having a cable retracting accommodating chamber 81, the connecting cable 41 of the tube 40 is foldably placed in the cable retracting accommodating chamber 81, and can be pulled back and forth in the cable retracting accommodating chamber 81 as the rotating member 21 rotates.

[0043] Specifically, the cable retracting assembly includes: an upper arc baffle 82 and a lower arc baffle 83, the circumferences of the upper arc baffle 82 and the lower arc baffle 83 are concentric with the circumference of the circumference of the rotating member 21, the upper arc baffle 82 and the lower arc baffle 83 are installed on the movable frame 10 along the up and down directions, and the upper arc baffle 82 and the lower arc baffle 83 are radially arranged in sequence; the interval space between the upper arc baffle 82 and the lower arc baffle 83 forms a cable retracting accommodating chamber 81.

[0044] In one embodiment, in order to ensure that the connecting cable 41 can move smoothly in the cable storage and accommodating chamber 81, in the present application, the cable storage and accommodating assembly also includes: a plurality of rollers 84, which are arranged in sequence along the circumference of the upper arc baffle 82 and / or along the circumference of the lower arc baffle 83.

[0045] In summary, in the variable SID movable CBCT provided by the present application, the linear moving mechanism drives the tube to move toward or away from the detector, thereby adjusting the distance between the tube and the detector, realizing the variable SID function to adapt to different usage scenarios. The rotating mechanism drives the tube and the detector to rotate synchronously, so as to realize three-dimensional imaging.

[0046] The above specific examples are used to illustrate the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the art, according to the concept of the present invention, some simple deductions, modifications or substitutions can be made.

Claims

1. A variable SID mobile CBCT, characterized in that: include: Movable rack, rotating mechanism, linear moving mechanism, tube, and detector; The rotating mechanism comprises: a rotating member, which is mounted on the movable frame and can rotate around its axis; the linear motion mechanism and the detector are mounted on the rotating member, the ball tube is mounted on the linear motion mechanism, and the ball tube is relative to the detector; the linear motion mechanism is used to adjust the distance between the ball tube and the detector; and further comprises: a cable retracting assembly, which has a cable retracting accommodating chamber, in which the connecting cable of the ball tube is foldably placed, and can be pulled back and forth in the cable retracting accommodating chamber as the rotating member rotates; two walking wheels and Two brake casters, and handles are arranged on opposite sides of the movable frame; the cable retracting assembly comprises: an upper arc baffle and a lower arc baffle, the circumferences of the upper arc baffle and the lower arc baffle are concentric with the circumference of the circumference of the circumference of the rotating part, the upper arc baffle and the lower arc baffle are installed on the movable frame along the up and down directions, and the upper arc baffle and the lower arc baffle are arranged radially in sequence; the interval space between the upper arc baffle and the lower arc baffle forms the cable retracting accommodating chamber; the cable retracting assembly also comprises: a plurality of rollers, and the plurality of rollers are arranged in sequence along the circumference of the upper arc baffle and / or along the circumference of the lower arc baffle.

2. The variable SID mobile CBCT according to claim 1, characterized in that: Also includes: A rotary drive mechanism is used to provide power for the rotating member to rotate around its axis.

3. The variable SID mobile CBCT according to claim 2, characterized in that: The rotary drive mechanism includes: a driving motor, a bearing, and a transmission belt; a mounting hole is provided on the movable frame, the bearing is installed in the mounting hole, a transmission belt sleeve position and a bearing mounting position are provided on one side of the axial direction of the rotating part from the outside to the inside, the bearing mounting position is installed on the bearing, and the transmission belt sleeve is arranged between the transmission belt sleeve position and the motor shaft of the driving motor.

4. The variable SID mobile CBCT according to claim 1, characterized in that: Also includes: A beam limiter is installed on the linear motion mechanism and is located at the emission end of the tube.

5. The variable SID mobile CBCT according to claim 4, characterized in that: The linear motion mechanism comprises: a linear screw pair and a linear motion drive motor; the ball tube and the beam limiter are both mounted on the linear screw pair, and the linear screw pair is drivingly connected to the linear motion drive motor.

6. The variable SID mobile CBCT according to claim 5, characterized in that: The linear motion mechanism further comprises: a slider and a slide rail, wherein the slide rail is arranged along a straight line coincident with the diameter of the rotating member, the slider is slidably mounted on the slide rail, and the ball tube is mounted on the slider.

7. The variable SID mobile CBCT according to claim 1, characterized in that: Also includes: A high voltage generator is installed on the circumferential surface of the rotating member and is connected to the ball tube.

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