CN108956656B

CN108956656B - High-contrast low-dose phase contrast CT imaging device

Info

Publication number: CN108956656B
Application number: CN201810785336.1A
Authority: CN
Inventors: 郭健; 张广飞; 薛伟; 章慧妍
Original assignee: Affiliated Hospital of University of Qingdao
Current assignee: Affiliated Hospital of University of Qingdao
Priority date: 2018-07-17
Filing date: 2018-07-17
Publication date: 2021-02-05
Anticipated expiration: 2038-07-17
Also published as: CN108956656A

Abstract

The invention discloses a high-contrast low-dose phase contrast CT imaging device which comprises a bottom plate, a first clamping plate and a supporting column, wherein a velvet pad is bonded below the bottom plate, a fixed shaft is arranged above the bottom plate, a spring is arranged inside the fixed shaft, a movable shaft is arranged above the spring, a sleeve rod is arranged above the movable shaft, the first clamping plate is arranged above the sleeve rod, a second clamping plate is arranged above the first clamping plate, a sleeve shaft penetrates through the inside of the second clamping plate, the supporting column is arranged on one side above the bottom plate, a lower plate surface is arranged above the second clamping plate, a groove is reserved at the upper end of the lower plate surface, a movable block is arranged inside the groove, a gear is arranged above the movable block, the edge end of the gear is connected with a motor, and a clamping groove is reserved at the lower end of the lower plate surface. The high-contrast low-dose phase contrast CT imaging device has the advantages of being capable of rotating, having a lifting adjusting function and the like.

Description

High-contrast low-dose phase contrast CT imaging device

Technical Field

The invention relates to the technical field of CT, in particular to a high-contrast low-dose phase contrast CT imaging device.

Background

CT, that is, electronic computed tomography, is mainly used for medical physical examination, and can be saved through computer imaging, and the physical condition of the person to be examined can be viewed according to the saved images.

The existing high-contrast low-dose phase contrast CT imaging device has the defects of incapability of rotating, incapability of adjusting the height and the like, so the high-contrast low-dose phase contrast CT imaging device is designed to solve the problems.

Disclosure of Invention

The present invention aims to provide a high-contrast low-dose phase contrast CT imaging device to solve the problems of the prior art that the high-contrast low-dose phase contrast CT imaging device cannot rotate and cannot adjust the height.

In order to achieve the purpose, the invention provides the following technical scheme: a high-contrast low-dose phase contrast CT imaging device comprises a bottom plate, a first clamping plate and a supporting column, wherein a velvet pad is bonded below the bottom plate, a fixed shaft is mounted above the bottom plate, a spring is arranged inside the fixed shaft, a movable shaft is mounted above the spring, a loop bar is arranged above the movable shaft, the first clamping plate is arranged above the loop bar, a second clamping plate is placed above the first clamping plate, a loop shaft penetrates through the inside of the second clamping plate, the supporting column is mounted on one side above the bottom plate, a lower plate surface is mounted above the second clamping plate, a groove is reserved at the upper end of the lower plate surface, a movable block is arranged inside the groove, a gear is arranged above the movable block, a motor is connected with the edge end of the gear, a transverse shaft penetrates through the middle of the loop shaft, a transmission frame is arranged at the edge end of the transverse shaft, a movable bar penetrates through the upper end of the loop shaft, and an upper plate surface is arranged above the movable rod, and a clamping groove is reserved at the lower end of the lower plate surface.

Preferably, the fixed shaft and the loop bar are in meshed connection, and the movement direction of the loop bar is a vertical direction.

Preferably, the first clamping plate and the second clamping plate are mutually attached and fixedly connected with the movable shaft.

Preferably, the diameter of the support column is equal to the width of the clamping groove, 4 support columns are arranged, and the clamping grooves are annular.

Preferably, the movable block forms a sliding structure through a gear and a groove.

Preferably, the transmission frames are symmetrically arranged about the transverse axis, and the number of the transmission frames is 2.

Compared with the prior art, the invention has the beneficial effects that: this low dose phase contrast CT imaging device of high contrast has can rotate and has advantages such as lift adjustment function:

1. the loop bar rotates outside the fixed shaft to drive the movable shaft to move downwards so as to extrude the spring downwards, so as to drive the first clamping plate to move downwards, and the limitation on the second clamping plate is released, so that the second clamping plate can rotate, namely the rotation of the lower plate surface and the upper plate surface;

2. when the lower plate surface rotates, the 4 support columns support the lower plate surface, and the 4 support columns slide in the clamping grooves to enable the support columns to still support the lower plate surface when the lower plate surface rotates;

3. the gear drives the movable block to slide in the groove, so that the transmission frame is pushed to contract or extend to open, the upper plate surface is jacked upwards or put down downwards, and the purpose of adjusting the height is achieved.

Drawings

FIG. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a schematic top view of the lower plate of the present invention;

FIG. 3 is a bottom view of the lower plate of the present invention.

In the figure: 1. a base plate; 2. a velvet pad; 3. a fixed shaft; 4. a spring; 5. a movable shaft; 6. a loop bar; 7. a first clamping plate; 8. a second clamping plate; 9. a support pillar; 10. a sleeve shaft; 11. a lower plate surface; 12. a groove; 13. a movable block; 14. a gear; 15. a motor; 16. a horizontal axis; 17. a transmission frame; 18. feeding a plate surface; 19. a movable rod; 20. a clamping groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a high-contrast low-dose phase contrast CT imaging device comprises a bottom plate 1, a velvet pad 2, a fixed shaft 3, a spring 4, a movable shaft 5, a loop bar 6, a first loop board 7, a second loop board 8, a support column 9, a loop bar 10, a lower board surface 11, a groove 12, a movable block 13, a gear 14, a motor 15, a cross shaft 16, a transmission frame 17, an upper board surface 18, a movable rod 19 and a clamping groove 20, wherein the velvet pad 2 is bonded below the bottom plate 1, the fixed shaft 3 is arranged above the bottom plate 1, the spring 4 is arranged inside the fixed shaft 3, the movable shaft 5 is arranged above the spring 4, the loop bar 6 is arranged above the movable shaft 5, the first loop board 7 is arranged above the loop bar 6, the second loop board 8 is arranged above the first loop board 7, the loop bar 10 penetrates through the second loop board 8, the support column 9 is arranged on one side above the bottom plate 1, the lower board surface 11 is arranged above the second loop board 8, a groove 12 is reserved at the upper end of the lower plate surface 11, a movable block 13 is arranged inside the groove 12, a gear 14 is arranged above the movable block 13, the side end of the gear 14 is connected with a motor 15, a transverse shaft 16 penetrates through the middle of the sleeve shaft 10, a transmission frame 17 is arranged at the side end of the transverse shaft 16, a movable rod 19 penetrates through the upper end of the sleeve shaft 10, an upper plate surface 18 is arranged above the movable rod 19, and a clamping groove 20 is reserved at the lower end of the lower plate surface 11;

the fixed shaft 3 is meshed with the loop bar 6, the movement direction of the loop bar 6 is vertical, and the external thread on the outer side of the fixed shaft 3 is meshed with the internal thread on the inner side of the loop bar 6 to drive the loop bar 6 to move up and down and further drive the movable shaft 5 to move up and down;

the first clamping plate 7 and the second clamping plate 8 are mutually attached, the first clamping plate 7 is fixedly connected with the movable shaft 5, and the first clamping plate 7 and the second clamping plate 8 are mutually attached, so that the first clamping plate 7 can fix or release the second clamping plate 8 when moving up and down to control the movement of the second clamping plate 8;

the diameter of each supporting column 9 is equal to the width of each

clamping groove

20, 4 supporting columns 9 are arranged, each clamping groove 20 is annular, and the top ends of the 4 supporting columns 9 extend into the corresponding clamping groove 20, so that when the lower plate surface 11 rotates, the supporting columns 9 still rotate in the clamping grooves 20, and the lower plate surface 11 can be always supported;

the movable block 13 forms a sliding structure through a gear 14 and a groove 12, the gear 14 is driven by a motor 15 to rotate, the movable block 13 is driven to slide in the groove 12, and finally the transmission frame 17 moves;

the transmission frame 17 is arranged symmetrically about the

transverse shaft

16, 2 transmission frames 17 are arranged, and the 2 transmission frames 17 are symmetrically arranged to support two ends of the lower plate surface 11 and prevent the single-side support from causing the inclination of the lower plate surface 11.

The working principle is as follows: when the high-contrast low-dose phase contrast CT imaging device is used, according to the figure 1-2, the loop bar 6 is rotated to drive the movable shaft 5 to move downwards to extrude the spring 4, and then the first clamping board 7 is driven to move downwards to release the limitation on the second clamping board 8, at the moment, the lower board surface 11 and the upper board surface 18 can be rotated to be adjusted to the required angle position, after the angle position is adjusted, when the loop bar 6 is rotated reversely, the spring 4 bounces upwards to drive the movable shaft 5 and the first clamping plate 7 to move upwards to limit the second clamping plate 8, the lower plate surface 11 and the upper plate surface 18 are fixed, the motor 15 with the model of Y90S-2 drives the gear 14 to rotate, the movable block 13 is driven to slide in the groove 12 to push the transmission frame 17, so that the height of the upper plate surface 18 is adjusted, and the movable rod 19 extends out of the sleeve shaft 10 to prevent the dislocation of the upper plate surface 18;

according to fig. 3, the circular slot 20 reserved at the lower end of the lower plate surface 11 can allow the support column 9 to be still located inside the slot 20 when the lower plate surface 11 rotates, so as to support the lower plate surface 11.

The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the embodiments are only used to help understanding the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the present description should not be construed as a limitation to the present invention.

Claims

1. A high-contrast low-dose phase contrast CT imaging device comprises a bottom plate (1), a first clamping plate (7) and a supporting column (9), and is characterized in that: a velvet pad (2) is bonded below the bottom plate (1), a fixed shaft (3) is mounted above the bottom plate (1), a spring (4) is arranged inside the fixed shaft (3), a movable shaft (5) is mounted above the spring (4), a sleeve rod (6) is arranged above the movable shaft (5), the first clamping plate (7) is arranged above the sleeve rod (6), a second clamping plate (8) is placed above the first clamping plate (7), a sleeve shaft (10) penetrates through the inside of the second clamping plate (8), the supporting column (9) is mounted on one side above the bottom plate (1), a lower plate surface (11) is mounted above the second clamping plate (8), a groove (12) is reserved at the upper end of the lower plate surface (11), a movable block (13) is arranged inside the groove (12), and a gear (14) is arranged above the movable block (13), and the limit end of gear (14) is connected with motor (15), cross axle (16) has been run through to the centre of sleeve axle (10), and the limit end of cross axle (16) is provided with driving frame (17), the upper end of sleeve axle (10) has run through movable rod (19), and the top of movable rod (19) installs face (18), the lower extreme of face (11) is reserved down has draw-in groove (20) to draw-in groove (20) are the annular, and the top of support column (9) extends inside draw-in groove (20).

2. A high contrast low dose phase contrast CT imaging apparatus according to claim 1, wherein: the fixed shaft (3) is in meshed connection with the loop bar (6), and the motion direction of the loop bar (6) is vertical.

3. A high contrast low dose phase contrast CT imaging apparatus according to claim 1, wherein: the first clamping plate (7) and the second clamping plate (8) are attached to each other, and the first clamping plate (7) is fixedly connected with the movable shaft (5).

4. A high contrast low dose phase contrast CT imaging apparatus according to claim 1, wherein: the diameter of support column (9) equals with the width of draw-in groove (20), and support column (9) are provided with 4.

5. A high contrast low dose phase contrast CT imaging apparatus according to claim 1, wherein: the movable block (13) forms a sliding structure through a gear (14) and a groove (12).

6. A high contrast low dose phase contrast CT imaging apparatus according to claim 1, wherein: the transmission frames (17) are symmetrically arranged around the transverse shaft (16), and 2 transmission frames (17) are arranged.