Medical image acquisition device

Abstract

The invention relates to the technical field of medical instruments, in particular to a medical image acquisition device which comprises a stand column, a driving motor, a shaft sleeve, a flat panel detector, an adjusting mechanism, a supporting plate, a fixing assembly and an ejector rod. A driving motor is fixedly installed on the stand column. A shaft sleeve is slidably installed on the driving motor. The shaft sleeve and the flat panel detector are rotationally mounted; an adjusting mechanism is arranged above the shaft sleeve, and when the flat panel detector performs image acquisition, the adjusting mechanism drives the flat panel detector to deflect; the shaft sleeve is fixedly provided with a supporting plate, the supporting plate is provided with a driving cavity, the driving cavity is internally provided with a fixing assembly, the ejector rod is located in the driving cavity, and when the flat panel detector deflects, the adjusting mechanism drives the ejector rod to horizontally slide through the fixing assembly. Therefore, the diversity of image data acquisition is improved, and the acquisition accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a medical image acquisition device. Background Art

[0002] Medical imaging equipment is widely used in various clinical departments. It interacts with the human body through certain media, such as X-rays, electromagnetic fields, and ultrasound, to display the structure and density of internal tissues and organs in the form of images for diagnostic medical staff to make judgments.

[0003] As a commonly used medical imaging equipment, the X-ray machine mainly consists of an X-ray generator and a flat-panel detector. The X-ray machine emits X-rays through the X-ray generator. When the X-rays pass through the patient's body, part of the X-rays are absorbed by the bones and organs, and the other part of the X-rays that are not absorbed falls on the flat-panel detector and is collected by the flat-panel detector, completing the X-ray information detection, energy conversion, quantification, information transmission and other processes and finally forming a digital X-ray image.

[0004] When using X-rays to detect the human heart and lungs, the patient is required to place the body close to the flat-panel detector and change body position according to the doctor's instructions to better obtain the X-ray image. However, during the process of changing body position, there may be a problem of body position change deviation, which may lead to the flat-panel detector not being able to accurately collect X-ray information passing through the human body, resulting in inaccurate X-ray images, which may affect the doctor's diagnosis.

[0005] To this end, the prior art has proposed a medical imaging device. This device scans the patient's physiological signals and implements gated triggering of the medical imaging device based on the physiological signals, thereby reducing the generation of artifacts and improving the imaging efficiency and image accuracy of the medical imaging device. However, the problem of inaccurate image acquisition caused by changes in body position has not yet been solved.

[0006] In view of this, we propose a medical image acquisition device. Summary of the invention

[0007] The purpose of the present invention is to provide a medical image acquisition device to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions: A medical image acquisition device comprises a column, a driving motor, a sleeve, a flat-panel detector, an adjustment mechanism, a support plate, a fixing assembly and a top rod; the driving motor is fixedly mounted on the column, the driving motor is provided with a thread, and the driving motor is slidably mounted with a sleeve; the sleeve is rotatably mounted with the flat-panel detector, an X-ray machine is arranged in front of the flat-panel detector, the X-ray machine is slidably mounted on the roof, slides through a slide rail, and thus changes the distance between the X-ray machine and the flat-panel detector, and the flat-panel detector is used to collect X-rays passing through the human body and thus realize imaging; A screw groove is provided on the shaft sleeve, and an adjustment mechanism is provided above the shaft sleeve. When the flat-panel detector performs image acquisition, the adjustment mechanism drives the flat-panel detector to deflect, and the deflection of the flat-panel detector thereby realizes multi-angle acquisition of the human chest cavity, thereby avoiding the patient's too frequent changes in body posture affecting the image acquisition; a support plate is fixedly installed on the shaft sleeve, and a driving cavity is provided on the support plate, and a fixing component is installed in the driving cavity, and the push rod is located in the driving cavity. When the flat-panel detector deflects, the adjustment mechanism drives the push rod to slide horizontally through the fixing component, and the push rod slides horizontally and extends out to support the flat-panel detector. At the same time, the sliding distance itself is adjusted according to the deflection angle of the flat-panel detector, so as to improve the stability of the flat-panel detector and avoid the shaking of the flat-panel detector and the occurrence of artifacts.

[0009] Preferably, an annular groove is provided on the shaft sleeve, and a positioning groove is provided in the annular groove; an annular slider is provided on the flat-panel detector, and a positioning protrusion is provided on the annular slider. The shaft sleeve and the flat-panel detector achieve relative rotation between the two through the cooperation of the annular groove and the annular slider, and the friction between the two is enhanced by the positioning groove and the positioning protrusion, thereby improving the stability of the flat-panel detector during rotation and ensuring the accuracy of the angular deflection of the flat-panel detector.

[0010] Preferably, the adjustment assembly includes a micro-motor, a worm, a worm wheel, a rotating shaft, a crank, a rocker, a swing rod and a limit column; the micro-motor is fixedly mounted on the column, and the micro-motor is fixedly connected to the worm; a worm wheel is provided on one side of the worm; the worm wheel is fixedly mounted on the rotating shaft, and the micro-motor rotates to drive the worm to rotate synchronously, and the worm drives the worm wheel to rotate horizontally, and the worm drives the rotating shaft to rotate synchronously; the rotating shaft is rotatably mounted on the column, and the lower end of the rotating shaft extends into the driving cavity of the support plate; one end of the crank is connected to the rotating shaft, and the other end of the crank is rotatably connected to the rocker; the rocker is connected to the swing rod through a limit column; the swing rod is connected to the flat-panel detector, and the crank, rocker and swing rod form a three-bar mechanism to drive the flat-panel detector to swing synchronously, and the rotating shaft rotates under the action of the worm wheel, so that the rotating shaft drives the crank fixedly connected to it to make a circular motion, the crank pulls the rocker to swing, the rocker drives the swing rod to slide, and the swing rod pulls the flat-panel detector and the shaft sleeve to rotate relative to each other.

[0011] Preferably, the rotating shaft includes a fixed shaft, a sliding shaft and a tension spring; the fixed shaft is fixedly connected to the worm gear, and the fixed shaft is rotatably connected to the column; the sliding shaft is slidably installed in the fixed shaft, and the sliding shaft is connected to the inner wall of the fixed shaft by a tension spring; a crank is fixedly connected to the lower end of the sliding shaft, and the fixed shaft is rotatably installed with the column through a bearing; the fixed shaft is fixedly connected to the worm gear and rotates synchronously with the worm gear, thereby driving the sliding shaft to rotate synchronously; the sliding shaft and the fixed shaft can rotate relative to each other, and when the flat-panel detector adjusts its own height, the sliding shaft will move synchronously with the flat-panel detector for stretching.

[0012] Preferably, an arcuate groove is provided on the support plate, and the limit column is located in the arcuate groove. The arcuate groove limits the sliding trajectory of the limit column, thereby limiting the swing of the swing arm, so that the swing arm moves along a fixed trajectory, thereby improving the rotation stability of the flat panel detector.

[0013] Preferably, the inner wall of the arc-shaped slide groove is provided with friction lines, and the thickness of the friction lines at both ends of the arc-shaped slide groove is greater than the thickness at the middle end. The friction lines are used to enhance the friction between the limit column and the arc-shaped slide groove, thereby preventing the limit column from shaking. At the same time, as the deflection angle of the flat-panel detector increases, the sliding distance of the limit column in the arc-shaped slide groove increases, and the closer to the end point of the arc-shaped slide groove, the greater the friction force it is subjected to, and the greater the fixing force applied to the limit column, thereby preventing the flat-panel detector from shaking due to the increase in the force between the flat-panel detector and the human body as the deflection angle of the flat-panel detector increases.

[0014] Preferably, the top of the push rod is a hemispherical structure, and the push rod is divided into a left push rod and a right push rod. When the flat-panel detector rotates, regardless of the deflection angle, the hemispherical structure enables the push rod to always contact the flat-panel detector, thereby supporting the flat-panel detector.

[0015] Preferably, the fixed assembly includes a driving wheel, an active rack, a transfer rack, a transmission wheel and a transmission rack; the driving wheel is located in the driving cavity and is fixedly connected to the sliding shaft. The rotating shaft rotates under the action of the worm gear, thereby driving the driving wheel to rotate synchronously, and the driving wheel is respectively provided with an active rack and a transfer rack; the active rack and the transfer rack are arranged vertically; the active rack is fixedly connected to the left top rod, and when the driving wheel rotates, it drives the active rack to slide horizontally, and the active rack drives the left top rod to slide synchronously, and at the same time, the driving wheel drives the transfer rack to slide horizontally; a transmission wheel is provided in front of the transfer rack; the transmission rack is arranged vertically with the transfer rack and meshes with the transmission wheel; the transmission rack is connected to the right top rod, the transfer rack slides horizontally and thereby drives the transmission wheel to rotate, and the transmission wheel then drives the transmission rack to slide, and the transmission rack drives the right top rod to slide horizontally.

[0016] Preferably, the transmission ratio of the active rack and the driving wheel is consistent with the transmission ratio of the transmission rack and the transmission wheel. The consistent transmission ratio makes the sliding distance of the left push rod and the right push rod consistent, thereby ensuring that the support force on the flat panel detector is consistent and ensuring the stability of the deflection of the flat panel detector.

[0017] Preferably, a push plate is symmetrically provided at the middle end of the transmission rack; the push plate is engaged with the limit column, and the push plate and the arc-shaped slide groove cooperate with each other to limit the sliding trajectory of the limit column, thereby limiting the sliding trajectory of the rocker arm, ensuring the stability of the three-link movement, thereby ensuring the stability of the deflection of the flat-panel detector.

[0018] Compared with the prior art, the present invention has the following beneficial effects: A medical image acquisition device realizes multi-angle rotation of a flat-panel detector through the cooperation of an adjustment component and a fixing component, thereby improving the diversity of image acquisition of the flat-panel detector, realizing multi-angle comparison, and improving diagnostic accuracy.

[0019] A medical image acquisition device improves the stability of a flat-panel detector by fixing components, thereby preventing the flat-panel detector from shaking, causing image acquisition errors and artifacts, which affect the diagnosis of medical staff.

[0020] A medical image acquisition device realizes the rotation of a flat-panel detector by adjusting components, thereby realizing multi-angle shooting of a patient's diagnosis area, avoiding the accuracy of image data acquisition affected by frequent changes in patient position or incorrect position and posture. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A half-section schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A local enlarged view of point A; Figure 3 It is a horizontal cross-sectional view of the overall structure of the present invention; Figure 4 For the present invention Figure 3 A local enlarged view of point B; Figure 5 It is a horizontal cross-sectional view of the support plate of the present invention; Figure 6 A half-section schematic diagram of a flat panel detector and a shaft sleeve of the present invention; Figure 7 For the present invention Figure 6 A local enlarged view of point C; Figure 8 It is an overall schematic diagram of the adjustment component of the present invention; Fig. 9 It is a partial schematic diagram of the flat panel detector and the adjustment assembly of the present invention; Fig.10 A half-section view of the rotating shaft of the present invention; Fig.11 It is an overall schematic diagram of the fixing assembly of the present invention.

[0022] In the figure: 1. Column; 2. Drive motor; 3. Shaft sleeve; 31. Annular slide groove; 311. Positioning groove; 4. Flat panel detector; 41. Ring slide block; 411. Positioning protrusion; 5. Adjustment mechanism; 51. Micro motor; 52. Worm; 53. Worm wheel; 54. Rotating shaft; 541. Fixed shaft; 542. Sliding shaft; 543. Tension spring; 55. Crank; 56. Rocker; 57. Rocker; 58. Limiting column; 6. Support plate; 61. Driving cavity; 62. Arc-shaped slide groove; 621. Friction pattern; 7. Fixed assembly; 71. Driving wheel; 72. Active rack; 73. Transfer rack; 731. Push plate; 74. Transmission wheel; 75. Transmission rack; 8. Push rod; 81. Hemispherical structure; 82. Left push rod; 83. Right push rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] A technical solution provided by the present invention: like Figures 1 to 11 As shown, a medical image acquisition device comprises a column 1, a driving motor 2, a sleeve 3, a flat-panel detector 4, an adjustment mechanism 5, a support plate 6, a fixing assembly 7 and a top rod 8; the driving motor 2 is fixedly mounted on the column 1, the driving motor 2 is provided with a thread, and the driving motor 2 is slidably mounted with a sleeve 3; the sleeve 3 is provided with a screw groove, the sleeve 3 and the flat-panel detector 4 are rotatably mounted, the driving motor 2 cooperates with the screw groove provided on the sleeve 3 through the thread, and the rotation of the motor itself is converted into the vertical sliding of the sleeve 3, an X-ray machine is arranged in front of the flat-panel detector 4, the X-ray machine is slidably mounted on the roof, and slides through a slide rail, thereby changing the distance between the X-ray machine and the flat-panel detector 4, thereby improving the detection accuracy, the X-ray machine emits X-rays, which fall on the flat-panel detector 4 after being absorbed by the human body, and the flat-panel detector 4 is used to collect X-rays passing through the human body and thus realize imaging; An adjusting mechanism 5 is provided above the shaft sleeve 3. When the flat panel detector 4 is performing image acquisition, the adjusting mechanism 5 drives the flat panel detector 4 to deflect. The deflection of the flat panel detector 4 further enables multi-angle acquisition of the human chest cavity, thereby preventing the patient from changing his / her body posture too frequently and affecting the image acquisition; an annular groove 31 is provided on the shaft sleeve 3, and a positioning groove 311 is provided in the annular groove 31; an annular slider 41 is provided on the flat panel detector 4, and a positioning protrusion 411 is provided on the annular slider 41. The shaft sleeve 3 and the flat panel detector 4 achieve relative rotation between the two through the cooperation of the annular groove 31 and the annular slider 41, and the positioning groove 311 and the positioning protrusion 41 are used to adjust the shaft sleeve 3 and the flat panel detector 4. 1 enhances the friction between the two, thereby improving the stability of the flat-panel detector 4 when rotating, ensuring the accuracy of the angle deflection of the flat-panel detector 4, and at the same time, ensuring the stability of the flat-panel detector 4 during the height adjustment process, ensuring that it will not rotate relative to the shaft sleeve 3. When the flat-panel detector 4 needs to be adjusted in height, the drive motor 2 drives the shaft sleeve 3 to slide vertically, and the shaft sleeve 3 squeezes the annular slide groove 31 through the annular slider 41, thereby driving the flat-panel detector 4 to slide synchronously with itself to adjust the height; when the flat-panel detector 4 needs to be adjusted in angle, the shaft sleeve 3 remains fixed, and the flat-panel detector 4 and the shaft sleeve 3 achieve relative rotation through the cooperation of the annular slide groove 31 and the annular slider 41; A support plate 6 is fixedly mounted on the shaft sleeve 3, and a driving cavity 61 is formed on the support plate 6. A fixing assembly 7 is installed in the driving cavity 61, and the push rod 8 is located in the driving cavity 61. When the flat-panel detector 4 deflects, the adjustment mechanism 5 drives the push rod 8 to slide horizontally through the fixing assembly 7, and the push rod 8 slides horizontally and extends out to support the flat-panel detector 4. At the same time, the sliding distance thereof is adjusted according to the deflection angle of the flat-panel detector 4, so as to improve the stability of the flat-panel detector 4 and avoid the shaking of the flat-panel detector 4 and the occurrence of artifacts; the top of the push rod 8 is a hemispherical structure 81, and the push rod 8 is divided into a left push rod 82 and a right push rod 83. When the flat-panel detector 4 is adjusted in height, the left push rod 82 and the right push rod 83 support the flat-panel detector 4, so as to avoid the flat-panel detector 4 from deflecting in an angle during the height adjustment process, so that the flat-panel detector 4 is not in a horizontal state; when the flat-panel detector 4 rotates, regardless of the deflection angle, the hemispherical structure 81 enables the push rod 8 to always contact with the flat-panel detector 4 and support the flat-panel detector 4.

[0025] The micro-motor 51 is fixedly mounted on the column 1, and the micro-motor 51 is fixedly connected to the worm 52; a worm wheel 53 is provided on one side of the worm 52; the worm wheel 53 is fixedly mounted on the rotating shaft 54, and the micro-motor 51 rotates to drive the worm 52 to rotate synchronously, and the worm 52 drives the worm wheel 53 to rotate horizontally, and the worm 52 then drives the rotating shaft 54 ​​to rotate synchronously; the rotating shaft 54 ​​is rotatably mounted on the column 1, and the rotating shaft 54 ​​is rotatably mounted on the column 1 through a bearing, and the lower end of the rotating shaft 54 ​​extends into the support plate 6 The crank 55 is connected to the rotating shaft 54 ​​at one end, and the rotating shaft 54 ​​includes a fixed shaft 541, a sliding shaft 542 and a tension spring 543; the fixed shaft 541 is fixedly connected to the worm gear 53, and the fixed shaft 541 is rotatably connected to the column 1; the sliding shaft 542 is slidably installed in the fixed shaft 541, and the sliding shaft 542 is connected to the inner wall of the fixed shaft 541 through the tension spring 543, and the tension spring 543 makes the fixed shaft 541 and the sliding shaft 542 form a whole. , can be rotated synchronously, the lower end of the sliding shaft 542 is fixedly connected with a crank 55, the fixed shaft 541 is rotatably installed with the column 1 through a bearing, the fixed shaft 541 is fixedly connected with the worm gear 53, and rotates synchronously with the worm gear 53, thereby driving the sliding shaft 542 to rotate synchronously, the sliding shaft 542 and the fixed shaft 541 can slide relative to each other, when the flat-panel detector 4 adjusts its own height, the sliding shaft 542 will move synchronously with the flat-panel detector 4 to stretch; the other end of the crank 55 rotates with the rocker 56 The rocker 56 and the swing rod 57 are connected through the limit column 58; the swing rod 57 is connected to the flat panel detector 4, and the crank 55, the rocker 56, and the swing rod 57 constitute a three-link mechanism to drive the flat panel detector 4 to swing synchronously. The rotating shaft 54 ​​rotates under the action of the worm gear 53, so that the rotating shaft 54 ​​drives the crank 55 fixedly connected thereto to make a circular motion, the crank 55 pulls the rocker 56 to swing, the rocker 56 drives the swing rod 57 to slide, and the swing rod 57 pulls the flat panel detector 4 and the shaft sleeve 3 to rotate relative to each other; The support plate 6 is provided with an arc-shaped slot 62, and the limiting column 58 is located in the arc-shaped slot 62. The arc-shaped slot 62 limits the sliding trajectory of the limiting column 58, thereby limiting the swing of the swing rod 57, so that the swing rod 57 moves along a fixed trajectory, thereby improving the rotation stability of the flat-panel detector 4; the inner wall of the arc-shaped slot 62 is provided with a friction pattern 621, and the thickness of the friction pattern 621 at both ends of the arc-shaped slot 62 is greater than the thickness at the middle end, and the friction pattern 621 is used to enhance the friction between the limiting column 58 and the arc-shaped slot 62, thereby preventing the limiting column 58 from shaking. At the same time, as the deflection angle of the flat-panel detector 4 increases, the sliding distance of the limiting column 58 in the arc-shaped slot 62 increases, and the closer to the end point of the arc-shaped slot 62, the greater the friction force, and the greater the fixing force of the limiting column 58, thereby preventing the flat-panel detector 4 from shaking due to the increase in the force between the flat-panel detector 4 and the human body as the deflection angle of the flat-panel detector 4 increases; When the flat-panel detector 4 needs to deflect to the left, the micro-motor 51 drives the worm 52 to rotate forward, the worm 52 drives the worm wheel 53 to rotate synchronously, the worm wheel 53 drives the rotating shaft 54 ​​to rotate counterclockwise, and the rotating shaft 54 ​​further drives the crank 55 to rotate synchronously, the crank 55 pushes the rocker 56 to swing, and the rocker 56 pushes the swing rod 57 through the limit column 58. The limit column 58 maintains its own sliding stability under the action of the arc-shaped slide groove 62, thereby ensuring the stability of the movement of the swing rod 57. The swing rod 57 applies a rightward force to the flat-panel detector 4, and the flat-panel detector 4 deflects to the right; when the flat-panel detector 4 needs to deflect to the left, the movement principle is the same as above.

[0026] The driving wheel 71 is located in the driving cavity 61 and is fixedly connected to the sliding shaft 542. The rotating shaft 54 ​​rotates under the action of the worm gear 53, thereby driving the driving wheel 71 to rotate synchronously. The driving wheel 71 is respectively provided with an active rack 72 and a transfer rack 73; the active rack 72 and the transfer rack 73 are arranged vertically; the active rack 72 is fixedly connected to the left top rod 82, and when the driving wheel 71 rotates, the active rack 72 is driven to slide horizontally, and the active rack 72 drives the left top rod 82 to slide synchronously. At the same time, the driving wheel 71 drives the transfer rack 73 to slide horizontally; the middle end of the transmission rack 75 is symmetrically provided with a push plate 731; the push plate 731 is engaged with the limit column 58, and the push plate 731 and the arc slide groove 62 cooperate with each other to limit the sliding trajectory of the limit column 58, thereby limiting the sliding trajectory of the swing rod 57, ensuring the stability of the three-link motion, thereby ensuring the stability of the deflection of the flat panel detector 4; the front of the transfer rack 73 is provided with a transmission wheel 74 ; The transmission rack 75 is arranged vertically with the transfer rack 73 and meshes with the transmission wheel 74; the transmission rack 75 is connected to the right top rod 83, the transfer rack 73 slides horizontally and drives the transmission wheel 74 to rotate, and the transmission wheel 74 drives the transmission rack 75 to slide, and the transmission rack 75 drives the right top rod 83 to slide horizontally; the transmission ratio of the active rack 72 and the driving wheel 71 is consistent with the transmission ratio of the transmission rack 75 and the transmission wheel 74. The consistent transmission ratio makes the sliding distance of the left top rod 82 and the right top rod 83 consistent, thereby ensuring that the support force exerted on the flat panel detector 4 is consistent, ensuring the stability of the deflection of the flat panel detector 4, and the flat panel detector 4 deflects around the midline plane of the driving motor 2, thereby making the deflection angles and deflection distances on both sides the same, so it is necessary to ensure that the sliding distances of the left top rod 82 and the right top rod 83 are the same, thereby ensuring that the left top rod 82 and the right top rod 83 are subjected to the same force on the flat panel detector 4, and ensuring that the force on the flat panel detector 4 is balanced; When the worm gear 53 drives the rotating shaft 54 ​​to rotate counterclockwise, the rotating shaft 54 ​​drives the crank 55, the crank 55 drives the rocker 56, the rocker 56 pushes the swing rod 57 to move rightward, and the swing rod 57 drives the flat panel detector 4 to deflect to the left. At the same time, the rotating shaft 54 ​​drives the driving wheel 71 to rotate in the same direction; the driving wheel 71 drives the active rack 72 to slide into the driving cavity 61, and the driving cavity 61 pulls the left push rod 82 to move in the same direction. At the same time, the driving wheel 71 drives the transfer rack 73 to slide horizontally to the right. During the sliding of the transfer rack 73 to the right, the push plate 731 pushes the limiting column 58 to slide horizontally to the right, thereby promoting the displacement of the swing rod 57 to ensure the correctness of the deflection of the flat panel detector 4. At the same time, the transfer rack 73 drives the transmission wheel 74 to rotate, and the transmission wheel 74 drives the transmission rack 75 to slide out of the driving cavity 61, and the transmission rack 75 pushes the right push rod 83 to slide out to support the flat panel detector 4; when the worm gear 53 drives the rotating shaft 54 ​​to rotate counterclockwise, the movement principle is the same as above.

[0027] When a medical image acquisition device of this embodiment is used, the medical staff adjusts the height of the flat-panel detector 4 according to the patient's height, and starts the driving motor 2. The driving motor 2 rotates to drive the shaft sleeve 3 to slide vertically downward, and the shaft sleeve 3 drives the flat-panel detector 4 thereon to slide downward synchronously. At the same time, the shaft sleeve 3 drives the support plate 6 and the components in the support plate 6 to slide downward synchronously. During the sliding process, the driving wheel 71 in the support plate 6 pulls the rotating shaft 54 ​​to move synchronously, and the sliding shaft 542 in the rotating shaft 54 ​​slides relative to the fixed shaft 541. After the height adjustment is completed, the medical staff adjusts the angle of the area where image data collection is required, the micro-motor 51 is started, the micro-motor 51 drives the worm 52 to rotate, the worm 52 drives the worm wheel 53 to rotate, the worm wheel 53 drives the rotating shaft 54 ​​to rotate synchronously, the rotating shaft 54 ​​drives the crank 55 to rotate synchronously, and drives the rocker 56, the rocker 56 drives the swing rod 57 through the limit column 58, the swing rod 57 drives the flat panel detector 4 to rotate, and at the same time, the rotating shaft 54 ​​drives the driving wheel 71 to rotate in the same direction; the driving wheel 71 drives the active rack 72 to slide horizontally, the active rack 72 drives the left top rod 82 to move synchronously, and at the same time, the driving wheel 71 drives the transfer rack 73 to slide horizontally, the transfer rack 73 pushes the limit column 58 to move through the push plate 731, thereby promoting the rotation of the flat panel detector 4, the sliding of the transfer rack 73 drives the transmission wheel 74 to rotate, the transmission wheel 74 drives the transmission rack 75 to rotate, the transmission rack 75 drives the right top rod 83 to slide, and the right top rod 83 and the left top rod 82 slide in the opposite direction; When the image data acquisition is completed, the micro-motor 51 reverses to drive the worm 52 to reverse, the worm 52 drives the worm gear 53 to reverse, the worm gear 53 drives the rotating shaft 54 ​​to reverse, the rotating shaft 54 ​​drives the flat panel detector 4 to reverse and reset through the crank 55, the rocker 56 and the swing rod 57, and at the same time, the rotating shaft 54 ​​drives the driving wheel 71 to reverse, the driving wheel 71 drives the active rack 72 and the transfer rack 73 to move in the opposite direction to reset, the active rack 72 drives the left top rod 82 to reset, the transfer rack 73 drives the transmission wheel 74 to reset, the transmission wheel 74 drives the transmission rack 75 to reset, the transmission rack 75 drives the right top rod 83 to reset, and then the driving motor 2 is started, the driving motor 2 reverses, drives the shaft sleeve 3 to slide in the opposite direction to reset, the shaft sleeve 3 drives the flat panel detector 4 and the support plate 6 to reset, the support plate 6 pushes the sliding shaft 542 to reset, the rotating shaft 54 ​​is reset, and one working cycle ends.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A medical image acquisition device, characterized in that: It comprises a column (1), a driving motor (2), a shaft sleeve (3), a flat-panel detector (4), an adjustment mechanism (5), a support plate (6), a fixing assembly (7) and a push rod (8); A drive motor (2) is fixedly mounted on the column (1), a thread is provided on the drive motor (2), and a shaft sleeve (3) is slidably mounted on the drive motor (2); The shaft sleeve (3) is provided with a screw groove, and the shaft sleeve (3) and the flat-panel detector (4) are rotatably mounted; An adjustment mechanism (5) is provided above the shaft sleeve (3); when the flat-panel detector (4) is performing image acquisition, the adjustment mechanism (5) drives the flat-panel detector (4) to deflect; a support plate (6) is fixedly mounted on the shaft sleeve (3); a drive cavity (61) is provided on the support plate (6); a fixing assembly (7) is installed in the drive cavity (61); the push rod (8) is located in the drive cavity (61); when the flat-panel detector (4) is deflected, the adjustment mechanism (5) drives the push rod (8) to slide horizontally via the fixing assembly (7).

2. The medical image acquisition device according to claim 1, characterized in that: The shaft sleeve (3) is provided with an annular slide groove (31), and a positioning groove (311) is provided in the annular slide groove (31); the flat panel detector (4) is provided with an annular slide block (41), and a positioning protrusion (411) is provided on the annular slide block (41).

3. The medical image acquisition device according to claim 2, characterized in that: The adjustment assembly comprises a micro-motor (51), a worm (52), a worm wheel (53), a rotating shaft (54), a crank (55), a rocker (56), a swing rod (57) and a limiting column (58); The micro-motor (51) is fixedly mounted on the column (1), and the micro-motor (51) is fixedly connected to the worm (52); A worm wheel (53) is provided on one side of the worm (52); the worm wheel (53) is fixedly mounted on the rotating shaft (54); The rotating shaft (54) is rotatably mounted on the column (1), and the lower end of the rotating shaft (54) extends into the driving cavity (61) of the support plate (6); One end of the crank (55) is connected to the rotating shaft (54), and the other end of the crank (55) is rotatably connected to the rocker (56); The rocker (56) and the swing rod (57) are connected via a limiting column (58); The swing rod (57) is connected to the flat panel detector (4).

4. The medical image acquisition device according to claim 3, characterized in that: The rotating shaft (54) comprises a fixed shaft (541), a sliding shaft (542) and a tension spring (543); The fixed shaft (541) is fixedly connected to the worm gear (53), and the fixed shaft (541) is rotationally connected to the column (1); The sliding shaft (542) is slidably mounted inside the fixed shaft (541); the sliding shaft (542) and the inner wall of the fixed shaft (541) are connected via a tension spring (543); and a crank (55) is fixedly connected to the lower end of the sliding shaft (542).

5. The medical image acquisition device according to claim 3, characterized in that: The support plate (6) is provided with an arc-shaped sliding groove (62), and the limiting column (58) is located in the arc-shaped sliding groove (62).

6. The medical image acquisition device according to claim 5, characterized in that: The inner wall of the arc-shaped slide groove (62) is provided with friction lines (621), and the thickness of the friction lines (621) at both ends of the arc-shaped slide groove (62) is greater than that at the middle end.

7. The medical image acquisition device according to claim 1, characterized in that: The top end of the push rod (8) is a hemispherical structure (81), and the push rod (8) is divided into a left push rod (82) and a right push rod (83).

8. The medical image acquisition device according to claim 4 or 7, characterized in that: The fixed assembly (7) comprises a driving wheel (71), an active rack (72), a transfer rack (73), a transmission wheel (74) and a transmission rack (75); The driving wheel (71) is located in the driving cavity (61) and is fixedly connected to the sliding shaft (542). The driving wheel (71) is provided with an active rack (72) and a transfer rack (73). The active rack (72) and the transfer rack (73) are arranged vertically; The active rack (72) is fixedly connected to the left top rod (82); A transmission wheel (74) is provided in front of the transfer rack (73); The transmission rack (75) is arranged vertically with the transfer rack (73) and meshes with the transmission wheel (74); the transmission rack (75) is connected to the right push rod (83).

9. The medical image acquisition device according to claim 8, characterized in that: The transmission ratio between the active rack (72) and the driving wheel (71) is consistent with the transmission ratio between the transmission rack (75) and the transmission wheel (74).

10. The medical image acquisition device according to claim 9, characterized in that: A push plate (731) is symmetrically provided at the middle end of the transmission rack (75); the push plate (731) is engaged with the limiting column (58).

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