X-ray beam limiting device and X-ray imaging system

Abstract

The utility model relates to the field of X-ray imaging systems, in particular to an X-ray beam limiting device, and provides an X-ray beam limiting device and an X-ray imaging system. The X-ray beam limiting device comprises a DAP detection device for realizing DAP detection and a mounting seat for mounting the DAP detection device, the mounting seat comprises a main body part and a guide convex part; the guide convex part protrudes out of the surface of the main body part; the guiding convex part comprises a connecting part and a guiding part, the connecting part is connected between the guiding part and the main body part, a gap is formed between the guiding part and the main body part, the main body part, the connecting part and the guiding part form a sliding groove, and the DAP detection device moves back and forth in the sliding groove; a limiting structure is further arranged on the mounting seat, and the limiting structure is used for limiting the DAP detection device after the DAP detection device moves into the sliding groove and releasing limiting of the DAP detection device so that the DAP detection device can move out of the sliding groove. The utility model mainly solves the technical problem of how to conveniently disassemble and assemble the DAP detection device.

Description

TECHNICAL FIELD

[0001] The utility model relates to X ray imaging system field, concretely relates to a kind of X ray beam limiter. BACKGROUND

[0002] X ray imaging system is a kind of common medical image system in medical field, for example DR (Digital Radiography, digital X ray photography) system, is widely used in medical examination and conventional medical image diagnosis field.

[0003] X ray imaging system can include X ray emitting device and X ray detection device, X ray emitting device generally includes ball tube, beam limiter and DAP detection device (DAP is Dose Area Product, dose area product). Ball tube can emit X ray, and X ray is collected after being through human body by X ray detection device, generates X ray photography image. Beam limiter has adjustable size opening, and can limit the irradiation range of X ray emitted from ball tube. And DAP detection device can detect DAP value, to better control radiation exposure level, and provide reference for ensuring the imaging quality of medical image.

[0004] DAP detection device can exist dismounting replacement demand due to damage or in order to adapt to different application scenarios, therefore, the dismounting convenience of DAP detection device on X ray beam limiter can bring greater influence to user experience. SUMMARY

[0005] The utility model mainly solves the technical problem of how to conveniently dismount DAP detection device.

[0006] In a first aspect, the present application provides an X ray beam limiter.

[0007] The X ray beam limiter comprises:

[0008] DAP detection device for realizing DAP detection and mounting seat for mounting the DAP detection device;

[0009] The mounting seat comprises a main body portion and a guide protrusion portion, the guide protrusion portion protrudes from the surface of the main body portion;The guide protrusion portion comprises a connecting portion and a guide portion, the connecting portion is connected between the guide portion and the main body portion, and the guide portion has a spacing with the main body portion, the main body portion, the connecting portion and the guide portion form a sliding groove, and the sliding groove is used for reciprocating movement of the DAP detection device;

[0010] The mounting base is further provided with a limiting structure for limiting the DAP detection device after the DAP detection device is moved into the sliding groove and for releasing the limitation of the DAP detection device to move the DAP detection device out of the sliding groove.

[0011] In one embodiment, at least one of the guide portions is provided with a guide surface on at least one side along the moving direction of the DAP detection device, and a flared structure is formed between the guide surface and the main body to guide the DAP detection device into the sliding groove.

[0012] In one embodiment, at least two of the sliding grooves are arranged at intervals along the moving direction of the DAP detection device.

[0013] In one embodiment, the main body is a hollow box structure, and the guide protrusions are arranged on the outer side of the main body.

[0014] In one embodiment, the mounting base is a main frame of an X-ray beam limiter, the main body is made of metal, and the guide protrusions are bent ear plates which are a sheet metal structure integrally formed on the main body.

[0015] In one embodiment, the limiting structure includes a blocking piece for limiting the moving-in position of the DAP detection device along the moving direction.

[0016] In one embodiment, the blocking piece is a limiting column protruding from the main body.

[0017] In one embodiment, the limiting column is connected to or cooperates with at least one functional module other than the DAP detection device.

[0018] In one embodiment, the limiting structure includes an anti-falling piece, the anti-falling piece is arranged on the side of the DAP detection device away from the blocking piece when the DAP detection device is limited by the blocking piece, the anti-falling piece has a locking state and an unlocking state, the anti-falling piece in the locking state is used to block the movement of the DAP detection device away from the blocking piece, and the anti-falling piece in the unlocking state is used to avoid the DAP detection device to enable the DAP detection device to move away from the blocking piece and be separated from the mounting base.

[0019] In one embodiment, the anti-falling piece is a spring plunger, the spring plunger includes a fixed seat fixed on the main body, a plunger, and an elastic piece arranged between the plunger and the fixed seat, the plunger is telescopically arranged on the fixed seat to enable the spring plunger to have a locking state and an unlocking state; or the anti-falling piece is a limiting screw which is threadedly connected to the main body.

[0020] In one embodiment, two opposite sides of the DAP detection device are provided with guide plates which protrude from the outer circumferential surface of the corresponding side of the DAP detection device, and the sliding groove is adapted to the guide plates to guide the DAP detection device to move back and forth.

[0021] In a second aspect, the application provides another X-ray beam limiting device.

[0022] The X-ray beam limiting device comprises:

[0023] a housing, a DAP detection device for implementing DAP detection, and a mounting seat for mounting the DAP detection device;

[0024] The mounting seat and the DAP detection device are arranged in a mounting cavity formed by the housing;

[0025] The mounting seat is provided with a guide rail structure for the DAP detection device to move back and forth;

[0026] The mounting seat is further provided with a limiting structure for limiting the DAP detection device after the DAP detection device moves into the guide rail structure, and for releasing the limitation of the DAP detection device to enable the DAP detection device to move out of the guide rail structure.

[0027] In one embodiment, the housing comprises a detachable part which, when detached, can form an operation opening on the housing, and the operation opening is used for the DAP detection device to be pulled out of the mounting seat.

[0028] In one embodiment, the mounting seat comprises a main body part and a guide protruding part which protrudes from the surface of the main body part; the guide protruding part comprises a connecting part and a guide part, the connecting part is connected between the guide part and the main body part, and the guide part has a space from the main body part; the main body part, the connecting part and the guide part form a sliding groove, and the sliding groove is used for the DAP detection device to move back and forth.

[0029] In one embodiment, at least two of the sliding grooves are arranged at intervals along the direction of the back-and-forth movement of the DAP detection device.

[0030] In one embodiment, the mounting seat is the main body frame of the X-ray beam limiting device, the main body part is made of metal, and the guide protruding part is a bent ear plate which is an integral part of the metal structure of the main body part.

[0031] In one embodiment, the limiting structure comprises a blocking piece which is used to limit the moving-in position of the DAP detection device along the direction of the back-and-forth movement of the DAP detection device.

[0032] In one embodiment, the limiting structure comprises a anti-disengagement piece, when the DAP detection device is limited by the blocking piece, the anti-disengagement piece blocks the side of the DAP detection device away from the blocking piece; the anti-disengagement piece has a locking state and an unlocking state, the anti-disengagement piece in the locking state is used for blocking the DAP detection device from moving away from the blocking piece, and the anti-disengagement piece in the unlocking state is used for avoiding the DAP detection device, so that the DAP detection device can move away from the blocking piece and disengage from the mounting seat.

[0033] In one embodiment, the anti-disengagement piece is a spring plunger, the spring plunger comprises a fixed seat fixed on the mounting seat, a plunger and an elastic piece arranged between the plunger and the fixed seat, the plunger is telescopically arranged on the fixed seat, so that the spring plunger has a locking state and an unlocking state; or the anti-disengagement piece is a limiting screw, the limiting screw is threadedly connected on the mounting seat.

[0034] In a third aspect, the present application provides an X-ray imaging system.

[0035] The X-ray imaging system comprises:

[0036] An X-ray emitting device, the X-ray emitting device comprising an X-ray tube and an X-ray beam limiter, the X-ray tube being configured to generate X-rays, the X-ray beam limiter being configured to control the size and direction of an X-ray beam; the X-ray beam limiter being any one of the above described X-ray beam limiters;

[0037] An X-ray detecting device, the X-ray detecting device being configured to receive X-rays for imaging.

[0038] The X-ray imaging system has the following beneficial effects:

[0039] According to the X-ray beam limiter, the mounting seat comprises a main body part and a guide protruding part protruding from the surface of the main body part, the guide protruding part can be connected to the main body part through the connecting part, and the guide part has a gap with the main body part and forms a sliding groove, which can be used for the DAP detection device to move back and forth, at the same time, the limiting structure on the mounting seat can limit the DAP detection device after the DAP detection device moves into the sliding groove, so that the DAP detection device is fixed on the mounting seat, and the limiting of the DAP detection device can be released to move the DAP detection device out of the sliding groove, so that the DAP detection device can be disassembled in a translational manner along the sliding groove, which can conveniently meet the fixing and disassembly requirements of the DAP detection device, and is conducive to improving the disassembly convenience of the DAP detection device.

[0040] According to the X-ray beam limiter in another kind of the utility model, the X-ray beam limiter includes the casing, the mounting seat and the DAP detection device are arranged in the mounting cavity surrounded by the casing, the mounting seat is equipped with the guide rail structure, the guide rail structure is used for the DAP detection device to move back and forth, simultaneously, the limiting structure on the mounting seat can limit the DAP detection device after the DAP detection device moves into the guide rail structure, makes the DAP detection device fixed on the mounting seat, also can remove the limiting of the DAP detection device to remove the DAP detection device from the guide rail structure, so that the DAP detection device can be disassembled in the translational mode along the guide rail structure, can conveniently satisfy the fixed and disassembly demand of the DAP detection device, is favorable to improve the disassembly convenience of the DAP detection device, and the mounting seat is built-in in the casing, can avoid the influence of the guide rail structure on the overall aesthetic property of the X-ray beam limiter. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 It is the structure schematic diagram of one embodiment of the X-ray emitting device in the utility model;

[0042] Figure 2 It is the structure exploded view of the X-ray beam limiter;

[0043] Figure 3 It is Figure 2 The schematic diagram of the DAP detection device in the utility model when being installed in place on the mounting seat;

[0044] Figure 4 It is Figure 2 The schematic diagram of the DAP detection device in the utility model in the disassembly process;

[0045] Figure 5 It is Figure 2 The schematic diagram of the DAP detection device in the utility model when being separated from the mounting seat;

[0046] Figure 6 It is the perspective view of the mounting seat;

[0047] Figure 7 It is the perspective view of the DAP detection device;

[0048] Figure 8 It is the perspective view of another view of the DAP detection device.

[0049] The list of feature names corresponding to the reference signs in the drawing:

[0050] 100, head;110, X-ray tube;

[0051] 200, X-ray beam limiter;

[0052] 210, mounting seat; 211, main body part; 212, guide convex part; 2121, connecting part; 2122, guide part; 2123, guide surface; 213, sliding groove; 214, limiting structure; 2141, blocking piece; 2142, anti-dropping piece;

[0053] 220, DAP detection device; 221, guide plate;

[0054] 230, cross light window assembly;

[0055] 240, connecting piece;

[0056] 250, shell; 251, detachable part. DETAILED DESCRIPTION

[0057] The utility model will be described in further detail below through specific implementation modes combined with the drawings. Similar elements in different implementation modes adopt relevant similar element labels. In the following implementation mode, many details are described in order to make the present application be better understood. However, the person skilled in the art can easily recognize that part of the features can be omitted in different cases or can be replaced by other elements, materials or methods. In some cases, some operations related to the present application are not shown or described in the specification in order to avoid the core part of the present application being overwhelmed by too much description, and it is not necessary to describe these related operations in detail for the person skilled in the art according to the description in the specification and general technical knowledge in the art.

[0058] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate way to form various implementation modes. At the same time, the steps or actions in the method description can also be sequentially adjusted or adjusted in a manner that is obvious to the person 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 do not mean that the sequence is necessary, unless otherwise stated that a certain sequence must be followed.

[0059] The serial numbers of the components in this paper, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequence or technical meaning. Unless otherwise specified, the "connection" and "coupling" in this application include direct and indirect connection (coupling).

[0060] Embodiment of the X-ray imaging system in the utility model:

[0061] In one embodiment, the X-ray imaging system includes an X-ray emitting device and an X-ray detecting device. When the system is working, after the X-ray emitting device emits X-rays, the X-rays can be received by the X-ray detecting device to form an image after passing through the object to be inspected.

[0062] Please refer to Figure 1 The X-ray emitting device can include a head 100 including an X-ray tube 110 for generating X-rays, and an X-ray beam limiter 200 for controlling the size and direction of the X-ray beam, reducing scatter and unnecessary radiation exposure. The X-ray detection device is used to receive X-rays to achieve imaging, for example, a flat panel detector can be used.

[0063] In addition, those skilled in the art can understand that the X-ray imaging system can also include a control device, a signal processing device, etc., the control device can be used to control the X-ray emitting device and the X-ray detection device, and the signal processing device can be connected with the X-ray detection device to realize imaging data processing.

[0064] The X-ray emitting device and the X-ray detection device can adopt any installation form. For example, the X-ray emitting device can be installed in a suspended manner, i.e., installed on a hanger; it can also be installed in a columnar manner, i.e., installed on a column. The X-ray detection device can also be installed in a columnar manner, and in some other embodiments, in order to meet some detection requirements, the X-ray imaging system can also include a bed body, which can enable a patient to lie in a flat posture for X-ray examination. Of course, the flat panel detector can also be arranged on the bed body, which can receive X-rays passing through the human body lying down. The X-ray emitting device can be arranged in a tiltable manner, so that the X-ray emitting device has a vertical irradiation state capable of emitting X-rays downward. It can be understood that the tilting adjustment of the X-ray emitting device can be realized through various corresponding tilting structures. In some use scenarios, the patient can also stand between the X-ray emitting device and the X-ray detection device arranged on the vertical support, and the part to be detected is close to the flat panel detector. In some other use scenarios, the patient can also lie on the bed body.

[0065] The components for emitting X-rays on the X-ray emitting device, the X-ray detection device, the control device, the signal processing device, etc. can refer to the existing structures in the related art. Considering that the specific structures are not directly related to the innovative content that the present application intends to protect, they will not be described in detail here. The structure of the X-ray beam limiter 200 will be described in detail below.

[0066] In some embodiments of the X-ray beam-limiting device 200 in the present application, the X-ray beam-limiting device 200 comprises a mounting base 210 and a DAP detection device 220 for implementing DAP detection, the DAP detection device 220 is assembled on the mounting base 210 of the X-ray beam-limiting device 200 in a reciprocating manner by means of a guide structure, and the DAP detection device 220 can move along the guide structure to disengage from the mounting base 210. At the same time, the limiting structure 214 can limit the DAP detection device 220 along the reciprocating movement direction of the DAP detection device 220. Therefore, when the DAP detection device 220 needs to be disassembled, the limiting of the DAP detection device 220 by the limiting structure 214 is released, and then the DAP detection device 220 is moved in and out to achieve the disassembly of the DAP detection device 220. Compared with fixing the DAP detection device 220 on the mounting base 210 by means of a plurality of fasteners, such as fixing a plurality of screws on the mounting base 210, the present application can more quickly disassemble and assemble the DAP detection device 220.

[0067] The mounting base 210 is used to mount corresponding functional modules of the X-ray beam-limiting device 200, which may, for example, include an aperture adjustment mechanism (not shown in the figure), a filter (not shown in the figure), a connecting piece 240, a cross light window assembly 230, etc. Among these functional modules, the aperture adjustment mechanism allows the user to adjust the size of the X-ray aperture (i.e., the opening for the X-rays to pass through), which can adopt a manually operated knob or slider, or an automatically controlled drive system. If it is an automatic beam-limiting device, it can contain a drive control system for receiving signals from an X-ray imaging system and adjusting the aperture size according to these signals. The filter can correspond to the window setting of the X-ray tube 110, and the function of the filter is to absorb soft X-rays with longer wavelengths in the primary X-rays, which do not contribute to the radiograph but increase the skin dose of the subject and thus cause harm. The cross light window assembly 230 can form a visible light mark under the irradiation of visible light, which is the same as the projection path of the X-rays, thereby indicating the center position of the X-ray projection area in a visual manner. The connecting piece 240 is used to fix the beam-limiting device to the X-ray machine, so as to maintain stable connection between the beam-limiting device and the X-ray source.

[0068] It should be noted that the above-mentioned functional modules are only some possible cases, and the X-ray beam-limiting device 200 can also include other functional modules, or only set part of the above-mentioned functional modules.

[0069] The mounting base 210, as a basic structural part of the X-ray beam-limiting device 200, can be made of a metal material and has high structural strength to stably support and fix other components. Please refer to Figures 3 to 6In some embodiments, the mounting base 210 can be a hollow box-shaped structure forming the main body frame. In some other embodiments, the mounting base 210 can be replaced by other structures as long as they can realize the mounting and fixing of other components.

[0070] The top of the mounting base 210 can be provided with a connecting piece 240 to connect the X-ray source, the inside can be provided with an aperture adjusting mechanism, a filter, etc., and the bottom can be provided with a DAP detection device 220. It should be noted that the above top and bottom directions are described only with reference to the illustrated directions, and the purpose is to facilitate a clearer description of the specific embodiments of the present application, and does not limit the embodiments of the present application to be arranged as such.

[0071] In order to realize the assembly of the DAP detection device 220 by means of reciprocating movement, in an embodiment, the mounting base 210 includes a main body part 211 and a guide protruding part 212, the guide protruding part 212 protruding from the bottom surface of the main body part 211; the guide protruding part 212 includes a connecting part 2121 and a guide part 2122 (for reference Figure 6 ), the connecting part 2121 is connected between the guide part 2122 and the main body part 211, and the guide part 2122 has a spacing from the main body part 211, and the main body part 211, the connecting part 2121 and the guide part 2122 form a sliding groove 213; the main body part 211 is provided with at least two sliding grooves 213, and the at least two sliding grooves 213 are used for embedding the side edge parts of the two opposite sides of the DAP detection device 220, so that the DAP detection device 220 can reciprocate along the sliding groove 213 and can be positioned in a direction perpendicular to the reciprocating movement direction. In the illustrated embodiment, the side edge parts of the two opposite sides of the DAP detection device 220 are respectively provided with two guide protruding parts 212, and the two guide protruding parts 212 of each side edge part form a sliding groove 213.

[0072] The connecting part 2121 and the guide part 2122 form a bent ear plate, which is simple in structure and easy to form. In some other embodiments, the connecting part 2121 can also have other shapes, for example, in the case of a split structure of the main body part 211 and the guide protruding part 212, the connecting part 2121 can include a first plate body attached to the surface of the main body part 211 and a second plate body connected between the first plate body and the guide part 2122, and the first plate body is provided to facilitate the reliable fixing of the connecting part 2121 and the main body part 211.

[0073] In an embodiment, please refer to Figure 7 and Figure 8Two opposite sides of the DAP detection device 220 are provided with guide plates 221 protruding from the outer circumferential surface of the corresponding side of the DAP detection device 220, and the sliding groove 213 is adapted to the guide plates 221 to guide the DAP detection device 220 to move back and forth. The guide plates 221 have a relatively thin thickness, which is conducive to reducing the protruding height of the guide protrusions 212. The guide plates 221 can be fixed on the plate surface of the main body part of the DAP detection device 220, or can be fixed on the outer circumferential surface of the corresponding side of the main body part.

[0074] Of course, in some other embodiments, according to the position setting requirements of the DAP detection device 220, the guide protrusions 212 can also be arranged at other positions of the main body part 211, for example, arranged on one side of the main body part 211 along a direction perpendicular to the top-bottom direction; for another example, the DAP detection device 220 can be installed inside the main body part 211, and at this time the guide protrusions 212 protrude from the inner side surface of the main body part 211.

[0075] The guide protrusions 212 can be integrally formed with the main body part 211, or can be separately manufactured and fixed to the main body part 211, and the fixing manner is not limited, for example, welding fixing, threaded fastener fixing, riveting fixing, clamping fixing, etc. In a specific embodiment, based on the metal material of the main body part 211, the guide protrusions 212 can be bent ear plates, which are sheet metal structures integrally formed on the main body part 211, and are formed by sheet metal process, which is convenient for manufacturing and is conducive to saving assembly cost. In some other embodiments, under the condition of meeting the structural strength requirement, the mounting seat 210 can also adopt non-metallic parts, for example, plastic parts, and at this time the guide protrusions 212 can be integrally formed with the main body part 211 by injection molding process.

[0076] In an embodiment, the at least two chutes 213 are arranged at intervals along the direction of the reciprocating movement of the DAP detection device 220, which is advantageous for reducing the size of the sheet metal processing part, avoiding the requirement of too long guiding length of the chute 213 and too high flatness, avoiding the jamming between the chute 213 and the DAP detection device 220, reducing the requirement of processing precision and reducing the processing cost. Of course, in some other embodiments, the number of the chutes 213 can also be two, the openings of the two chutes 213 are oppositely arranged, and the two chutes 213 are respectively used for cooperating with the two opposite sides of the DAP detection device 220, and the length of the chute 213 can correspond to the length of the two opposite sides of the DAP detection device 220, for example, the length of the chute 213 is equal to the length of the two opposite sides of the DAP detection device 220, which is advantageous for ensuring the stability and firmness of the DAP detection device 220 after being installed to the chute 213. Those skilled in the art can understand that the length of the chute 213 can also be longer or shorter than the length of the two opposite sides of the DAP detection device 220. In addition, the chutes 213 adapted to the two opposite sides of the DAP detection device 220 can have different sizes, shapes and / or numbers.

[0077] Since the DAP detection device 220 needs to keep a relatively accurate positional relationship with the mounting seat 210, the groove wall of the chute 213 and the two opposite sides of the DAP detection device 220 should meet certain cooperation precision requirements. At this time, in order to facilitate the smooth insertion of the DAP detection device 220 into the chute 213, in some embodiments, at least one guide portion 2122 is provided with a guide surface 2123 on at least one side along the direction of the reciprocating movement, and the guide surface 2123 and the main body portion 211 form a flared structure to guide the DAP detection device 220 into the chute 213. Please refer to Figure 6 In an embodiment, the bending ear plate is provided with an inclined portion on the side close to the insertion end of the chute 213, and the inclined portion forms a flared structure. It should be noted that the inclined portion can be linearly inclined or arcuately inclined, and when the inclined portion is arcuately inclined, a structure similar to a rounded corner can be formed.

[0078] To ensure the working reliability of the DAP detection device 220, the mounting base 210 is provided with a limiting structure 214. The limiting structure 214 is used to limit the DAP detection device 220 after the DAP detection device 220 is moved into the sliding groove 213, and to release the limitation of the DAP detection device 220 so as to move the DAP detection device 220 out of the sliding groove 213. The limiting structure 214 can be distributed along the reciprocating movement direction of the DAP detection device 220 to respectively form a barrier on both sides of the DAP detection device 220 along the reciprocating movement direction; the limiting structure 214 can also include a limiting hole penetrating the DAP detection device 220 and a limiting piece inserted into the limiting hole, and the limiting piece and the hole wall of the limiting hole abut along the reciprocating movement direction of the DAP detection device 220 to limit the DAP detection device 220 along the reciprocating movement direction.

[0079] In some embodiments, the limiting structure 214 can include a blocking piece 2141 and a anti-disengagement piece 2142. The blocking piece 2141 is used to limit the moving-in position of the DAP detection device 220 along the reciprocating movement direction, and the anti-disengagement piece 2142 is used to prevent the DAP detection device 220 from being disengaged in the opposite direction after being mounted in place.

[0080] The specific structure of the blocking piece 2141 and the fixing method of the blocking piece 2141 and the main body part 211 are not limited, such as welding, riveting, threaded connection, etc. In an embodiment, the blocking piece 2141 is a limiting column protruding from the main body part 211, and the outer peripheral surface of the limiting column can limit the DAP detection device 220 along the moving-in direction. During the process of moving the DAP detection device 220 into the sliding groove 213 on the mounting base 210, when the DAP detection device 220 abuts against the limiting column, the DAP detection device 220 is mounted in place. The number of blocking pieces 2141 is not limited, for example, one blocking piece 2141 can be arranged corresponding to the end position of each row of sliding grooves 213, or one blocking piece 2141 can be arranged corresponding to the midpoint of the connecting line of the two rows of sliding grooves 213, and more than two blocking pieces 2141 can be arranged on the surface of the main body part 211 perpendicular to the reciprocating movement direction of the DAP detection device 220. In some other embodiments, the blocking piece 2141 can also not be limited to a column structure, for example, it can be a block structure, a plate structure, etc. As an example, a limiting plate protruding from the surface of the main body part 211 can be directly stamped and formed on the main body part 211 in a sheet metal manner as the blocking piece 2141.

[0081] In an embodiment, the limiting column is connected or cooperated with at least one functional module other than the DAP detection device 220, that is, the limiting column is a common structure, which can be connected or cooperated with other functional modules in addition to limiting the DAP detection device 220. Please refer to Figure 2In a specific embodiment, the end of the limiting column can be provided with a threaded hole, and the cross light window assembly 230 can be fixed on the main body 211 by a screw connected with the threaded hole. In some other embodiments, the limiting column can also be used to realize other functions, such as forming a limit with other functional modules except the DAP detection device 220 by relying on the outer circumferential surface.

[0082] For the case that the blocking piece 2141 is a fixed piece, the anti-dropping piece 2142 is a movable piece. In an embodiment, when the DAP detection device 220 is in the state of being limited by the blocking piece 2141, the anti-dropping piece 2142 is blocked on the side of the DAP detection device 220 away from the blocking piece 2141; the anti-dropping piece 2142 has a locked state and an unlocked state, the anti-dropping piece 2142 in the locked state is used to block the movement of the DAP detection device 220 away from the blocking piece 2141, and the anti-dropping piece 2142 in the unlocked state is used to avoid the DAP detection device 220, so that the DAP detection device 220 can move away from the blocking piece 2141 to disengage from the mounting seat 210.

[0083] The blocking piece 2141 can adopt different structural forms, and can realize the locking and unlocking of the DAP detection device 220.

[0084] In an embodiment, the anti-dropping piece 2142 can be a spring plunger (not shown in the figure), which includes a fixed seat fixed on the main body 211, a plunger, and an elastic piece arranged between the plunger and the fixed seat, the plunger is telescopically arranged on the fixed seat, so that the spring plunger has a locked state and an unlocked state. The specific structure of the spring plunger can refer to the existing structure in the related art, for example, the fixed seat can be a pipe structure, the plunger can be a cylindrical structure, the plunger is movably inserted into the fixed seat and has a set activity stroke, the end of the part of the plunger extending out of the fixed seat can be a hemispherical surface to play a guiding role, and the elastic piece can be a spiral spring. The fixing mode of the spring plunger on the mounting base body is not limited, for example, the spring plunger can be welded to the mounting base body, for the spring plunger with an external thread on the outer circumferential surface of the fixed seat, a threaded hole can also be provided on the mounting base body, and the spring plunger is screwed into the threaded hole to realize the installation.

[0085] When the DAP detection device 220 is installed, the DAP detection device 220 presses down the plunger on the spring plunger, so that the spring plunger is in an unlocked state, and then the DAP detection device 220 can be moved into along the sliding groove 213. When the DAP detection device 220 moves into contact with the blocking piece 2141, the DAP detection device 220 is installed in place, at this time, the DAP detection device 220 is just staggered with the spring plunger along the back-and-forth movement direction of the DAP detection device 220, the plunger is popped up under the action of the spring, and the DAP detection device 220 is blocked, so as to avoid the DAP detection device 220 from sliding out reversely. When the DAP detection device 220 needs to be removed, the plunger can be pressed down by hand or tool, so that the spring plunger is in an unlocked state, and the spring plunger can be taken out along the sliding groove 213.

[0086] In another embodiment, the anti-extraction piece 2142 can be a limiting screw (as shown in Figure 3 ), which is threadedly connected on the main body part 211. The limiting screw is rotated, so that at least a part of the limiting screw in the axial direction enters the back-and-forth movement space of the DAP detection device 220, that is, in a locked state, which can limit the DAP detection device 220 and prevent the DAP detection device 220 from being extracted from the sliding groove 213. The limiting screw is rotated, so that the limiting screw is separated from the main body part 211, or is moved in the axial direction to a position avoiding the back-and-forth movement space of the DAP detection device 220, that is, in an unlocked state, which can release the limitation on the DAP detection device 220, so that the DAP detection device 220 can be extracted from the sliding groove 213.

[0087] The X-ray beam limiter 200 realizes the guidance of the DAP detection device 220 through the guide convex part 212 on the main body part 211, the guide convex part 212 includes a connecting part 2121 and a guide part 2122, which is relatively simple in structure while meeting the convenient disassembly and assembly of the DAP detection device 220. However, the DAP detection device 220 can be directly exposed, which can cause certain influence on the appearance of the X-ray beam limiter 200.

[0088] In some embodiments, please refer to Figure 2 , the X-ray beam limiter 200 further includes a shell 250, and the mounting seat 210 and the DAP detection device 220 are arranged in a mounting cavity formed by the shell 250. Due to the shielding of the shell 250, the DAP detection device 220 can more flexibly select various forms of pull-out structures, without needing to consider too much about the appearance problem.

[0089] In an embodiment, the mounting base 210 is provided with a guide rail structure for the DAP detection device 220 to move back and forth, and the DAP detection device 220 can be extracted from the guide rail structure to be separated from the mounting base 210. When the DAP detection device 220 needs to be disassembled, the shell 250 can be disassembled, and then the disassembly operation of the DAP detection device 220 can be performed. The above-mentioned guide rail structure can be formed by the guide protrusion 212 in the above-mentioned embodiment, or can be replaced by other structures, for example, a recess is arranged on the main body part 211, the recess forms a guide groove, and the two opposite sides of the DAP detection device 220 can be embedded in the guide groove and guided by the guide groove; for another example, a guide groove can be arranged on the DAP detection device 220, and a guide element capable of being embedded in the guide groove can be arranged on the main body part 211, the guide element can be a pulley, a protrusion, etc., and the guide groove and the guide element cooperate to form the guide rail structure; for another example, a cavity for accommodating the DAP detection device 220 can be arranged on the main body part 211, the shape of the cavity is matched with the DAP detection device 220, and the cavity can guide the DAP detection device 220 by the side cavity walls.

[0090] In order to simplify the disassembly and assembly process of the shell 250, in an embodiment, the shell 250 comprises a detachable part 251, and when the detachable part 251 is disassembled, an operation opening is formed on the shell 250, and the operation opening is used for the DAP detection device 220 to be extracted from the mounting base 210. Those skilled in the art can understand that the detachable part 251 can at least leave a space for the DAP detection device 220 to move back and forth, and on this basis, the size, shape and boundary position of the detachable part 251 are not limited. In addition, the detachable part 251 of the shell 250 can select different plug-in structures according to needs, for example, a buckle structure, a screw fixing structure, etc.

[0091] When the DAP detection device 220 needs to be operated, the limiting structure 214 can be in an unlocked state, and the DAP detection device 220 can be moved back and forth along the sliding groove 213 or the guide rail structure, so that the DAP detection device 220 can be installed in place or separated from the mounting base 210. For the DAP detection device 220 arranged inside the shell 250, the entire shell 250 can be disassembled, or the detachable part 251 of the shell 250 can be disassembled, and the DAP detection device 220 can be moved back and forth along the sliding groove 213 or the guide rail structure, so that the DAP detection device 220 can be installed in place or separated from the mounting base 210. It should be noted that in an embodiment, the DAP detection device 220 can be connected to a corresponding electrical module (such as a signal processing device) through a connection cable, and when the DAP detection device 220 is moved back and forth, the connection cable can be deformed to adapt to the position change of the DAP detection device 220, and the connection cable can be plugged and unplugged through a connector to completely disassemble the DAP detection device 220.

[0092] The embodiment of the X-ray beam limiter in the utility model:

[0093] The X-ray beam limiter comprises a mounting seat 210, a functional module mounted on the mounting seat 210 and a DAP detection device 220, and the specific structure can be the same as that of the X-ray beam limiter 200 in any embodiment described above, and the specific structure will not be repeated here.

[0094] The above application of specific examples is used for helping understanding the utility model and does not limit the utility model. For the skilled in the art to which the utility model belongs, according to the idea of the utility model, a plurality of simple deductions, deformations or substitutions can be made.

Claims

1. An X-ray beam limiter, characterized in that The application relates to a DAP detection device and a mounting seat for mounting the DAP detection device. The mounting seat comprises a main body and a guide protrusion which protrudes from the surface of the main body; the guide protrusion comprises a connecting part and a guide part, the connecting part is connected between the guide part and the main body, the guide part is spaced apart from the main body, and the main body, the connecting part and the guide part form a sliding groove for the DAP detection device to move back and forth; The mounting seat is further provided with a limiting structure which is used for limiting the DAP detection device after the DAP detection device moves into the sliding groove and is used for releasing the limitation of the DAP detection device so that the DAP detection device can move out of the sliding groove. At least one guide surface is arranged on at least one side of the guide part along the moving direction of the DAP detection device, the guide surface and the main body form a flared structure to guide the DAP detection device into the sliding groove.

2. The X-ray beamlet according to claim 1, characterized in that At least two sliding grooves are arranged at intervals along the moving direction of the DAP detection device.

3. The X-ray beamlet according to claim 1, wherein The main body is a hollow box structure, and the guide protrusion is arranged on the outer side of the main body.

4. The x-ray beamlet according to claim 1, wherein, The mounting seat is a main body frame of an X-ray beam limiter, the main body is made of metal, and the guide protrusion is a bent ear plate which is an integral part of the main body.

5. The x-ray beamlet according to claim 1, wherein, The limiting structure comprises a blocking piece which is used for limiting the moving-in position of the DAP detection device along the moving direction.

6. The X-ray beamlet according to any one of claims 1 to 5, characterized in that The blocking piece is a limiting column which protrudes from the main body.

7. The X-ray beamlet according to claim 6, characterized in that The limiting column is connected with or cooperates with a functional module other than the DAP detection device.

8. The X-ray beamlet according to claim 7, characterized in that The limiting structure comprises a anti-dropping piece, the anti-dropping piece is arranged on the side of the DAP detection device which is far away from the blocking piece when the DAP detection device is limited by the blocking piece; the anti-dropping piece has a locking state and an unlocking state, the anti-dropping piece in the locking state is used for blocking the movement of the DAP detection device to the side far away from the blocking piece, and the anti-dropping piece in the unlocking state is used for avoiding the DAP detection device so that the DAP detection device can move to the side far away from the blocking piece and be separated from the mounting seat.

9. The x-ray beamlet according to claim 6, wherein, The anti-dropping piece is a spring plunger which comprises a fixed seat fixed on the main body, a plunger and an elastic piece arranged between the plunger and the fixed seat, the plunger is telescopically arranged on the fixed seat so that the spring plunger has the locking state and the unlocking state; or the anti-dropping piece is a limiting screw which is threadedly connected on the main body.

10. The X-ray beamlet according to claim 9, characterized in that Two opposite sides of the DAP detection device are provided with guide plates which protrude from the outer circumferential surface of the corresponding side of the DAP detection device, and the sliding groove is matched with the guide plates to guide the back-and-forth movement of the DAP detection device.

11. The X-ray beamlet according to any one of claims 1 to 5, characterized in that The application relates to a DAP detection device and a mounting seat for mounting the DAP detection device.

12. An X-ray beam-limiting aperture, characterized in that ​ ​ The mounting base and the DAP detection device are disposed within the mounting cavity formed by the housing; The mounting base is provided with a guide rail structure, which allows the DAP detection device to move back and forth. The mounting base is also provided with a limiting structure, which is used to limit the DAP detection device after it moves into the guide rail structure, and to release the limiting structure of the DAP detection device so that the DAP detection device can be removed from the guide rail structure.

13. The X-ray beamlet according to claim 12, wherein The housing includes a detachable portion that, when removed, forms an operating port on the housing, allowing the DAP detection device to be pulled out from the mounting base.

14. The x-ray beamlet according to claim 12, wherein, The mounting base includes a main body and a guide protrusion, the guide protrusion protruding from the surface of the main body; the guide protrusion includes a connecting portion and a guiding portion, the connecting portion connecting the guiding portion and the main body, the guiding portion and the main body having a gap, the main body, the connecting portion and the guiding portion forming a groove, the groove allowing the DAP detection device to move back and forth.

15. The X-ray beamlet according to claim 14, characterized in that At least two of the aforementioned chutes are arranged at intervals along the reciprocating movement direction of the DAP detection device.

16. The x-ray beamlet of claim 14, wherein, The mounting base is the main frame of the X-ray beam limiter. The main body is made of metal, and the guide protrusion is a bent ear plate, which is a sheet metal structure integrally formed on the main body.

17. The X-ray beamlet according to any one of claims 12 to 16, characterized in that The limiting structure includes a blocking member, which is used to limit the position of the DAP detection device along the reciprocating movement direction of the DAP detection device.

18. The x-ray beamlet of claim 17, wherein, The limiting structure includes an anti-detachment component. When the DAP detection device is in a state limited by the blocking component, the anti-detachment component blocks the DAP detection device on the side away from the blocking component. The anti-detachment component has a locked state and an unlocked state. In the locked state, the anti-detachment component is used to prevent the DAP detection device from moving to the side away from the blocking component. In the unlocked state, the anti-detachment component is used to avoid the DAP detection device, so that the DAP detection device can move to the side away from the blocking component and detach from the mounting base.

19. The x-ray beamlet according to claim 18, wherein, The anti-detachment component is a spring plunger, which includes a fixed base fixed on the mounting base, a plunger, and an elastic element disposed between the plunger and the fixed base. The plunger is telescopically disposed on the fixed base so that the spring plunger has a locked state and an unlocked state; or, the anti-detachment component is a limiting screw, which is threadedly connected to the mounting base.

20. An x-ray imaging system, characterized by include: An X-ray emitting device, comprising an X-ray tube and an X-ray beam limiter, wherein the X-ray tube is used to generate X-rays and the X-ray beam limiter is used to control the size and direction of the X-ray beam; the X-ray beam limiter is the X-ray beam limiter according to any one of claims 1 to 19. An X-ray detection device is used to receive X-rays for imaging.

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