CN213372075U

CN213372075U - X-ray beam limiter and X-ray detection equipment

Info

Publication number: CN213372075U
Application number: CN202021810315.XU
Authority: CN
Inventors: 朱忠明
Original assignee: Feirui Medical Instrument Jiaxing Co ltd
Current assignee: Feirui Medical Instrument Jiaxing Co ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-06-08
Anticipated expiration: 2030-08-26

Abstract

The utility model provides a beam limiting device for X-ray and X-ray detection equipment. The beam limiter comprises a flange assembly and a plurality of adjusting modules; the flange assembly comprises a fixed base and a flange plate positioned on the fixed base, through holes are formed in the centers of the fixed base and the flange plate, and the ball pipe is positioned on the flange plate and corresponds to the through holes of the flange plate; the plurality of adjusting modules are distributed along the circumferential direction of the fixed base and clamped on the periphery of the fixed base; when the focus of the bulb tube deviates from the center of the through hole of the fixed base, the position of the fixed base is adjusted by moving the plurality of adjusting modules so that the focus of the bulb tube vertically corresponds to the center of the through hole of the fixed base, and then the fixed base and the flange are fixed. The utility model discloses can ensure that the focus of bulb is in the absolute position placed in the middle, help improving the precision of beam limiting device, and have the regulation precision height, advantages such as the regulating means is simple reliable. Based on the utility model discloses an X ray check out test set of beam limiter, it detects the precision and can effectively improve.

Description

X-ray beam limiter and X-ray detection equipment

Technical Field

The utility model relates to a medical diagnosis treatment facility technical field especially relates to an X ray beam limiting device and X ray detection equipment.

Background

X-ray diagnostic techniques are the earliest non-invasive visceral examination techniques used in the world. Since the X-ray passes through the human body, the different parts absorb different degrees of X-ray, for example, the skeleton absorbs more X-ray than the muscle, so that the X-ray passing through the human body is different in the different parts, the different X-ray quantities carry the density distribution information of each part of the human body, the intensity of the fluorescence or sensitization caused on the fluorescent screen or photographic film is greatly different, and therefore, shadows with different densities are displayed on the fluorescent screen or photographic film (after development and fixation). According to the contrast of shade, and the clinical manifestation, the test result and the pathological diagnosis, whether a certain part of the human body is normal can be judged. With the continuous improvement of medical diagnosis level and the higher attention of people to health, the application of X-ray diagnosis technology is more and more extensive.

The existing X-ray detection equipment generally needs to adjust the irradiation field of X-rays through an X-ray beam limiter. The bulb tube is fixed on the X-ray beam limiter through a mounting flange, and X-rays emitted by the bulb tube are projected to an object to be observed through an observation window of the X-ray beam limiter. Due to various reasons (for example, due to the position deviation of a positioning flange and a connecting flange in a mounting flange), the focus of the existing bulb tube is not absolutely centered relative to the mounting flange, and the deviation within 1mm exists, so that certain application occasions with high precision requirements cannot be met.

SUMMERY OF THE UTILITY MODEL

In view of the above shortcomings in the prior art, an object of the present invention is to provide an X-ray beam limiter and an X-ray detection device, which are used for solving the problems that the focus of the existing bulb is not absolutely centered relative to the mounting flange, the deviation within 1mm exists, and the application occasion and the like which have high precision requirements cannot be satisfied.

To achieve the above and other related objects, the present invention provides an X-ray beam limiter, which comprises a flange assembly and a plurality of adjusting modules; the flange assembly comprises a fixed base and a flange plate positioned on the fixed base, through holes are formed in the centers of the fixed base and the flange plate, and a ball pipe is positioned on the flange plate and corresponds to the through holes of the flange plate; the plurality of adjusting modules are distributed along the circumferential direction of the fixed base and clamped on the periphery of the fixed base; when the focus of the bulb tube deviates from the center of the through hole of the fixed base, the position of the fixed base is adjusted by moving the plurality of adjusting modules so that the focus of the bulb tube vertically corresponds to the center of the through hole of the fixed base, and then the fixed base and the flange are fixed together.

Optionally, the number of the adjusting modules is 4, and the 4 adjusting modules are uniformly distributed along the circumference of the fixing base at intervals and used for adjusting the position of the fixing base from the X direction and the Y direction.

Optionally, the adjusting module includes a mounting base, an E-shaped clamp spring, an aligning block, and an adjusting fastener; an adjusting sliding groove is formed in the mounting base, and the centering block is located in the adjusting sliding groove and can move in the adjusting sliding groove; the E-shaped clamp spring is connected with the aligning block, the adjusting fastener comprises an adjusting nut and an adjusting screw, the adjusting nut is fixed on the mounting base, one end of the adjusting screw is connected with the E-shaped clamp spring, the other end of the adjusting screw is located in the adjusting nut, when the position of the fixing base needs to be adjusted, the adjusting screw rotates, the adjusting screw drives the E-shaped clamp spring to translate, the aligning block is driven to move in the adjusting sliding groove, the aligning block protrudes out of the surface of the mounting base in the moving process and is in contact with the fixing base, and the fixing base is moved to a required position.

Optionally, the adjusting module further comprises a plurality of locking blocks, a plurality of lead screws and a plurality of locknuts, wherein a plurality of locking chutes are formed in the mounting base, and the locking blocks are located in the locking chutes in a one-to-one correspondence manner and can slide in the locking chutes; the locknut is fixed on the mounting base, one end of the screw rod is connected with the locking block, and the other end of the screw rod is positioned in the locknut; after the fixed base is moved to a required position through the E-shaped clamp spring, the screw rod is rotated to move the locking block part to the surface of the fixed base so as to lock the fixed base at the required position.

Optionally, a clamping groove is formed in the locking block, and when the fixed base is locked, the fixed base is clamped into the clamping groove.

Optionally, the number of the locking blocks is 2, and the aligning block is located between the 2 locking blocks.

Optionally, the locking block and the centering block are both copper blocks, the lead screw and the adjusting screw are both M6 locking screws, and the adjusting nut and the locknut are both M6 locknuts.

Optionally, the flange assembly further comprises a connecting base located between the flange plate and the fixing base, a through hole is formed in the connecting base, and the through hole of the connecting base corresponds to the through hole of the flange plate.

Optionally, the flange assembly further includes a lead leaf shielding layer, and the lead leaf shielding layer is located between the flange plate and the connection base.

The utility model also provides an X ray check out test set, X ray check out test set include as in above-mentioned arbitrary scheme X ray beam limiting device.

As described above, the utility model discloses an X ray beam limiter is through the structural design who improves, can utilize a plurality of adjusting module to adjust unable adjustment base's position when needs in order to change unable adjustment base's the relative position of the relative ring flange through-hole of through-hole to make the focus of bulb be in the absolute position placed in the middle, help improving the precision of X ray beam limiter. The X-ray beam limiter of the utility model has the advantages of high adjusting precision, simple and reliable adjusting mode and the like. Based on the utility model discloses an X ray check out test set of X ray beam limiter, it detects the precision and can effectively improve.

Drawings

Fig. 1 shows a schematic structural diagram of the X-ray beam limiter of the present invention.

Fig. 2 is a schematic cross-sectional view of fig. 1.

Fig. 3 is a schematic structural view of the flange assembly of fig. 1.

Fig. 4 is a schematic structural diagram of the adjusting module in fig. 1.

Description of the element reference numerals

1-a flange assembly; 11-a stationary base; 12-a flange plate; 13-a connection base; 14-lead leaf shielding layer; 2-a regulating module; 21-mounting a base; 22-E type clamp spring; 23-a centering block; 241-an adjusting nut; 242-adjusting screws; 25-a locking block; 26-a screw rod; 27-locknuts; 3-base

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

Please refer to fig. 1 to 4. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

As shown in fig. 1 to 4, the present invention provides an X-ray beam limiter, which comprises a flange assembly 1 and a plurality of adjusting modules 2; the flange assembly 1 comprises a fixed base 11 and a flange plate 12 positioned on the fixed base 11, wherein through holes are formed in the centers of the fixed base 11 and the flange plate 12; the bulb tube is used for emitting X-rays and is positioned on the flange plate 12 and corresponds to the through hole of the flange plate 12 (namely, the focus of the bulb tube corresponds to the center of the flange plate 12); the plurality of adjusting modules 2 are distributed along the circumferential direction of the fixed base 11 and clamped on the periphery of the fixed base 11; when the focus of the bulb tube deviates from the center of the through hole of the fixed base 11, the position of the fixed base 11 is adjusted by moving the plurality of adjusting modules 2 so that the focus of the bulb tube vertically corresponds to the center of the through hole of the fixed base 11, and then the fixed base 11 and the flange 12 are fixed together. The utility model discloses a beam limiting device for X-ray is through the structural design who improves, can utilize a plurality of adjusting module adjustment unable adjustment base's position in order to change unable adjustment base's the relative position of the relative ring flange through-hole of through-hole when needs to make the focus of bulb be in the absolute position placed in the middle, help improving the precision of beam limiting device for X-ray. The X-ray beam limiter of the utility model has the advantages of high adjusting precision, simple and reliable adjusting mode and the like.

As an example, the flange 12 is a circular flange and the fixing base 11 is a rectangular base or a rectangular-like shape (four corners of the fixing base 11 may be non-right angles, such as a chamfer structure), and the length and width of the fixing base 11 are both greater than the diameter of the flange 12, that is, the flange 12 is completely located on the fixing base 11, so as to ensure that the flange 12 is completely located above the fixing base 11 even if the position of the fixing base 11 is moved. As an example, the fixing base 11 and the flange 12 are fixed by screws, so that the flange 12 and the fixing base 11 are respectively provided with a plurality of corresponding screw holes (for example, a plurality of screw holes are uniformly arranged along the circumferential direction), and since the fixing base 11 needs to be adjusted in position when needed, the hole diameters of the screw holes need to be designed to allow the screw holes and the screws to have a certain adjustment margin.

When the fixed base 11 is a rectangular base, the adjusting module 2 is also preferably rectangular. And as an example, the number of the adjusting modules 2 is 4, and the 4 adjusting modules 2 are uniformly distributed along the circumferential direction of the fixing base 11 at intervals (corresponding to being located on four sides of the fixing base 11) and are used for adjusting the position of the fixing base 11 from the X direction and the Y direction.

The maximum adjustment distance of the adjustment module 2 can be set as required, usually not more than 2mm, and the moving distance of the adjustment module 2 can be measured by setting scales on the fixed base 11, but also in other manners. For example, in this embodiment, the adjusting module 2 includes a mounting base 21, an E-shaped clamp spring 22, a centering block 23, and an adjusting fastener; an adjusting sliding groove is formed in the mounting base 21, the centering block 23 is located in the adjusting sliding groove and can move in the adjusting sliding groove, and when the centering block 23 moves in the adjusting sliding groove, the centering block 23 protrudes out of the surface of the mounting base 21 and is in contact with the fixed base 11, so that the centering block 23 can push the fixed base 11 in the moving process; the E-shaped clamp spring 22 is connected to the centering block 23, the adjusting fastener includes an adjusting nut 241 and an adjusting screw 242, the adjusting nut 241 is fixed to the mounting base 21, one end of the adjusting screw 242 is connected to the E-shaped clamp spring 22, and the other end of the adjusting screw 242 is located in the adjusting nut 241, so that the adjusting screw 242 is supported by the adjusting nut 241, when the position of the fixing base 11 needs to be adjusted, the adjusting screw 242 is rotated, the adjusting screw 242 drives the E-shaped clamp spring 22 to translate, thereby driving the centering block 23 to move in the adjusting chute, and the centering block 23 protrudes from the surface of the mounting base 21 during moving and contacts with the fixing base 11, thereby moving the fixing base 11 to a desired position (i.e., pushing the fixing base 11). The adjusting screw 242 has a plurality of threads, and the distance between any two adjacent threads is a certain value, such as 0.1-0.5mm, or other values, so that the moving distance of the adjusting screw 242, that is, the moving distance of the fixing base 11, can be known according to the number of rotation turns (i.e., the number of threads moved) of the adjusting screw 242. On the contrary, after the deviation between the tube focus and the center of the fixed base 11 is confirmed, the number of threads to be moved is calculated and corresponding operations are performed, so that the fixed base 11 can be adjusted to a desired position, and the tube focus is in an absolutely centered position.

In a further example, the adjusting module 2 further includes a plurality of locking blocks 25, a plurality of screw rods 26 and a plurality of locknuts 27, a plurality of locking chutes are provided on the mounting base 21, and the locking blocks 25 are located in the locking chutes in a one-to-one correspondence manner and can slide in the locking chutes; the locknut 27 is fixed on the mounting base 21, one end of the screw rod 26 is connected with the locking block 25, and the other end is positioned in the locknut 27; after the fixing base 11 is moved to a desired position by the E-shaped clamp spring 22, the screw rod 26 is rotated to move the locking block 25 partially to the surface of the fixing base 11 to lock the fixing base 11 at the desired position, so that the stability of the whole device can be improved, and the fixing base 11 can be prevented from being displaced and dislocated again. Of course, in other examples, the fixed base 11 can be moved to the desired position and then locked in position by other means, such as other fixing members abutting against the adjusting module 2, but the structural design of the present invention helps simplify the structure of the whole X-ray beam limiter.

As an example, the locking block 25 is provided with a locking groove, and when the fixing base 11 is locked, the fixing base 11 is locked into the locking groove. The locking groove may be a rectangular or V-like groove, that is, the locking block 25 has a protruding surface, the protruding surface is clamped on the surface of the fixed base 11, and the bottom supporting surface connected with the protruding surface is pressed against the side surface of the fixed base 11.

As an example, the number of the locking blocks 25 is 2, and the aligning block 23 is located between the 2 locking blocks 25, and is preferably symmetrically distributed, that is, the distance between the two locking blocks 25 and the aligning block 23 is equal, so as to improve the stability of the adjusting module 2 and avoid the deviation.

As an example, the locking block 25 and the aligning block 23 are both copper blocks, and the copper blocks are adopted to make the locking block 25 and the aligning block 23 have high hardness, so as to facilitate locking and fixing. By way of example, the lead screw 26 and the adjusting screw 242 are both M6 lock screws, and the adjusting nut 241 and the locknut 27 are both M6 locknuts 27, which helps to increase the flexibility of adjustment.

As an example, the flange assembly 1 further includes a connecting base 13 located between the flange 12 and the fixing base 11, a through hole is provided on the connecting base 13, and the through hole of the connecting base 13 corresponds to the through hole of the flange 12. The connection base 13 may be fixed to the fixing base 11, and the connection base 13 moves synchronously during the process of moving the fixing base 11.

Illustratively, the flange assembly 1 further comprises a lead leaf shield layer 14, wherein the lead leaf shield layer 14 is positioned between the flange plate 12 and the connection base 13. The position of the lead leaf shielding layer 14 can be moved, thereby changing the size of the X-ray radiation field.

The X-ray beam limiter further comprises a base 3, and the flange assembly and the adjusting module are located on the base 3.

Use the utility model discloses an X ray beam limiter has the regulation precision height, and the regulative mode is simple, advantage such as reliable, and it can be used to in the multiple device that need adjust the bulb focus, and X ray check out test set is exactly based on a specific application of this X ray beam limiter.

Specifically, the utility model provides an X ray check out test set still provides, X ray check out test set includes in above-mentioned arbitrary scheme X ray beam limiter, X ray beam limiter is still including the bulb that is used for launching X ray to and high voltage generator, the bulb corresponds to be located on the through-hole of ring flange, high voltage generator with the bulb electricity is connected. Based on the utility model discloses an X ray check out test set can ensure the focus of bulb placed in the middle, helps improving the detection precision.

To sum up, the utility model discloses a X ray beam limiter is through the structural design who improves, can utilize a plurality of adjusting module to adjust unable adjustment base's position when needs in order to change the relative position of unable adjustment base's the relative ring flange through-hole of through-hole to make the focus of bulb be in the absolute position placed in the middle, help improving the precision of X ray beam limiter. The X-ray beam limiter of the utility model has the advantages of high adjusting precision, simple and reliable adjusting mode and the like. Based on the utility model discloses an X ray check out test set of X ray beam limiter, it detects the precision and can effectively improve. The utility model discloses a X ray beam limiter and X ray detection equipment are particularly useful for the application scenario that the required precision is high. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. An X-ray beam limiter is characterized by comprising a flange assembly and a plurality of adjusting modules; the flange assembly comprises a fixed base and a flange plate positioned on the fixed base, through holes are formed in the centers of the fixed base and the flange plate, and a ball pipe is positioned on the flange plate and corresponds to the through holes of the flange plate; the plurality of adjusting modules are distributed along the circumferential direction of the fixed base and clamped on the periphery of the fixed base; when the focus of the bulb tube deviates from the center of the through hole of the fixed base, the position of the fixed base is adjusted by moving the plurality of adjusting modules so that the focus of the bulb tube vertically corresponds to the center of the through hole of the fixed base, and then the fixed base and the flange are fixed together.

2. The X-ray beam limiter according to claim 1, wherein the number of the adjusting modules is 4, and the 4 adjusting modules are uniformly distributed at intervals along the circumference of the fixing base and used for adjusting the position of the fixing base from the X direction and the Y direction.

3. The X-ray beam limiter according to claim 1, wherein the adjusting module comprises a mounting base, an E-shaped clamp spring, a centering block and an adjusting fastener; an adjusting sliding groove is formed in the mounting base, and the centering block is located in the adjusting sliding groove and can move in the adjusting sliding groove; the E-shaped clamp spring is connected with the aligning block, the adjusting fastener comprises an adjusting nut and an adjusting screw, the adjusting nut is fixed on the mounting base, one end of the adjusting screw is connected with the E-shaped clamp spring, and the other end of the adjusting screw is positioned in the adjusting nut; when the position of the fixed base needs to be adjusted, the adjusting screw is rotated, the adjusting screw drives the E-shaped clamp spring to translate, the aligning block is driven to move in the adjusting sliding groove, and the aligning block protrudes out of the surface of the mounting base in the moving process and is in contact with the fixed base, so that the fixed base is moved to a required position.

4. The X-ray beam limiter according to claim 3, wherein the adjusting module further comprises a plurality of locking blocks, a plurality of lead screws and a plurality of locknuts, a plurality of locking chutes are formed in the mounting base, and the locking blocks are located in the locking chutes in a one-to-one correspondence manner and can slide in the locking chutes; the locknut is fixed on the mounting base, one end of the screw rod is connected with the locking block, and the other end of the screw rod is positioned in the locknut; after the fixed base is moved to a required position through the E-shaped clamp spring, the screw rod is rotated to move the locking block part to the surface of the fixed base so as to lock the fixed base at the required position.

5. The X-ray beam limiter according to claim 4, wherein a slot is provided on the locking block, and the fixing base is snapped into the slot when the fixing base is locked.

6. The X-ray beam limiter according to claim 4, wherein the number of the locking blocks is 2, and the aligning block is located between the 2 locking blocks.

7. The X-ray beam limiter of claim 4, wherein the locking block and the centering block are both copper blocks, the lead screw and the adjusting screw are both M6 locking screws, and the adjusting nut and the locknut are both M6 locknuts.

8. The X-ray beam limiter of claim 1, wherein the flange assembly further comprises a connecting base located between the flange plate and the fixing base, the connecting base being provided with through holes, the through holes of the connecting base corresponding to the through holes of the flange plate.

9. The X-ray beam limiter of claim 8 wherein the flange assembly further comprises a lead leaf shield positioned between the flange and the connection mount.

10. An X-ray examination apparatus, characterized in that the X-ray examination apparatus comprises an X-ray beam limiter according to any one of claims 1-9.