X-ray imaging system and machine head thereof

Abstract

The invention discloses an X-ray imaging system and a machine head thereof. A beam limiting device of the machine head is provided with an image projection device and an adjusting device. The image projection device is provided with a light source assembly capable of emitting various colors and a lens assembly used for imaging, illumination light emitted by the light source assembly is transmitted by the lens assembly to form imaging light, and the imaging light is reflected by the reflecting part to the X-ray limiting channel and penetrates out of the beam limiting device through the X-ray limiting channel to form an image. The image includes a light field representing an irradiation area of the X-ray. The image projection device replaces a traditional LED light source. Meanwhile, the image projection device is installed on the adjusting device, and the adjusting device can adjust the relative position of the image projection device and the reflecting piece, so that imaging light coincides with the bulb tube focus of the bulb tube relative to a virtual light source formed by the lens assembly and a mirror image virtual light source formed by the reflecting piece. And the assembling difficulty of the image projection device and the reflector is reduced.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular to the head structure of an X-ray imaging system. Background Art

[0002] In X-ray imaging systems, such as radiation DR equipment, a beam limiter component is configured on the head to control the range of the emitted X-rays (for example, this can be achieved through an openable lead window), and the soft ray components are filtered out by an additional copper (or aluminum) filter inside the beam limiter to reduce radiation damage to the human body. At the same time, in order to show the doctor the actual irradiation range of the X-rays, an LED light source is configured in the traditional beam limiter. The LED light source forms a light field under the action of the beam limiter, and the light field coincides with the irradiation field (the X-rays coming out of the beam limiter). In addition, in order to indicate the center of the light field, the current beam limiter adopts a solution of attaching a thin cross light-blocking strip on the light window (a transparent baffle at the light outlet of the beam limiter) to block the light and produce a cross shadow in the middle of the light field.

[0003] However, in clinical practice, the light field formed by this LED light source can only show the size of the area, and its function is single. Moreover, the crosshairs in the center of the light field are generated by blocking the shadow, and the width of the crosshairs will change with the SID (source image distance) distance. Summary of the Invention

[0004] This application provides an X-ray imaging system and its head, to demonstrate a structure that uses an image projection device instead of an LED light source to form a light field.

[0005] According to one aspect of the present application, an embodiment provides a head of an X-ray imaging system, comprising:

[0006] A tube, which is used to generate an X-ray source and emit X-rays;

[0007] and a beam limiter, the beam limiter comprising an X-ray limiting device, a reflective element, an image projection device, and an adjustment device, the X-ray limiting device forming an X-ray limiting channel, the X-rays emitted by the X-ray source passing through the beam limiter through the X-ray limiting channel to be emitted toward the object to be inspected;

[0008] The image projection device is capable of emitting imaging light, which is reflected by the reflective member to the X-ray limiting channel and passes through the beam limiter through the X-ray limiting channel to form an image, wherein the image includes a light field representing an irradiation area of ​​the X-ray;

[0009] The image projection device is installed on the adjustment device, and the adjustment device can adjust the relative position of the image projection device and the reflector so that the mirror image virtual light source of the virtual light source formed by the lens assembly relative to the imaging light on the reflector coincides with the tube focus of the tube.

[0010] In one embodiment, the image projection device comprises a light source assembly capable of emitting multiple colors and a lens assembly for forming an image. The illumination light emitted by the light source assembly is transmitted through the lens assembly to form imaging light.

[0011] In one embodiment, the adjustment device has a translation adjustment structure, and the image projection device has a first direction, a second direction, and a third direction that are perpendicular to each other. The first direction is the axial direction of the lens assembly, and the second direction and the third direction are radial directions of the lens assembly. The translation adjustment structure can drive the image projection device to translate relative to the reflective element along at least one of the first direction, the second direction, and the third direction.

[0012] In one embodiment, the beam limiter has a shell, the adjustment device is mounted on the shell, the translation adjustment structure includes at least one translation assembly, the translation assembly includes a first movable seat, a first fixed seat for supporting the first movable seat, and a first translation adjustment member for adjusting the position of the first movable seat, the first fixed seat is directly or indirectly mounted on the shell, the first movable seat is movably mounted on the first fixed seat, and the image projection device is directly or indirectly mounted on the first movable seat.

[0013] In one embodiment, the first translation adjustment member is an adjusting screw, which is installed on the first movable seat and forms a screw-nut structure, so that the first movable seat can be controlled to move on the first fixed seat through the adjusting screw.

[0014] In one embodiment, the first fixed seat has an installation cavity, the installation cavity has a pair of oppositely arranged cavity walls, each of the cavity walls is provided with a guide portion, the first movable seat is arranged in the installation cavity, and the opposite ends of the first movable seat respectively form a sliding connection with the corresponding guide portion so that the first movable seat can slide on the guide portion.

[0015] In one embodiment, the first fixed seat has an annular structure, the inner ring of the annular structure forms an installation cavity, the first movable seat is arranged in the annular structure, and the first movable seat is exposed from the inner ring opening of the annular structure so that the first movable seat can be docked with other components.

[0016] In one embodiment, the guide portion is a guide groove, and the first movable seat has sliders at two opposite ends respectively, and the sliders are slidably engaged with the corresponding guide grooves.

[0017] In one embodiment, one of the translation assemblies is a first-direction translation assembly, and the first movable seat in the first-direction translation assembly is arranged along the first direction relative to the moving direction of the first fixed seat; and / or,

[0018] One of the translation assemblies is a second-direction translation assembly, wherein the first movable seat in the second-direction translation assembly is arranged along the second direction relative to the moving direction of the first fixed seat; and / or,

[0019] One of the translational components is a third-direction translational component, and the first movable seat in the third-direction translational component is arranged along the third direction relative to the moving direction of the first fixed seat.

[0020] In one embodiment, there are at least three translation assemblies, which are divided into at least a first direction translation assembly, a second direction translation assembly and a third direction translation assembly. The first direction translation assembly, the second direction translation assembly and the third direction translation assembly are connected in series with each other, wherein the first fixed seat of the previous translation assembly is installed on the first movable seat of the next translation assembly, the image projection device is installed on the first movable seat of the frontmost translation assembly, and the first fixed seat of the translation assembly at the rearmost end is fixedly connected to the shell.

[0021] In one embodiment, the adjustment device is connected to the reflector to adjust the inclination angle of the reflector relative to the image projection device so that the mirror image virtual light source of the virtual light source formed by the imaging light relative to the lens assembly on the reflector coincides with the tube focus of the tube.

[0022] In one embodiment, the adjustment device has a rotation adjustment structure, and the rotation adjustment structure can drive the image projection device to rotate to rotationally adjust the angle of the image projected by the image projection device.

[0023] In one embodiment, the image projection device has a first direction, a second direction, and a third direction that are perpendicular to each other, the first direction is the axial direction of the lens assembly, the second direction and the third direction are radial directions of the lens assembly, and the rotation adjustment structure can drive the image projection device to rotate along at least one of the first direction, the second direction, and the third direction.

[0024] In one embodiment, the beam limiter has a shell, the adjustment device is mounted on the shell, the rotation adjustment structure includes at least one rotating component, the rotating component includes a rotating seat, a second fixed seat for supporting the rotating seat, and a rotating adjustment member for adjusting the position of the rotating seat, the second fixed seat is directly or indirectly mounted on the shell or the translation adjustment structure, the rotating seat is rotatably connected to the second fixed seat, and the image projection device is directly or indirectly mounted on the rotating seat.

[0025] In one embodiment, the rotation adjustment member includes a third fixed seat, a second movable seat and a second translation adjustment member, the third fixed seat is fixedly mounted on the second fixed seat, the second movable seat is movably mounted on the third fixed seat, the second translation adjustment member is connected to the second movable seat to control the translation of the second movable seat relative to the third fixed seat; the rotating seat is mounted on the second movable seat, and the second translation adjustment member is used to control the translation of the second movable seat to control the rotation of the rotating seat relative to the second fixed seat.

[0026] In one embodiment, the second translation adjustment member is an adjusting screw, which is installed on the second movable seat and forms a screw-nut structure, so that the second movable seat can be controlled to move on the third fixed seat through the adjusting screw.

[0027] In one embodiment, the second movable seat has a connecting pin, and the rotating seat is provided with a second guide groove, the guiding direction of the second guide groove is perpendicular to the moving direction of the second movable seat, and the connecting pin is inserted into the second guide groove. During the translation of the second movable seat relative to the third fixed seat, the connecting pin can slide in the second guide groove to avoid interference between the translation movement of the second movable seat and the rotation movement of the rotating seat relative to the second fixed seat.

[0028] In one embodiment, the third fixed seat has an installation cavity, the installation cavity has a pair of oppositely arranged cavity walls, each of the cavity walls is provided with a guide portion, the second movable seat is arranged in the installation cavity, and the opposite ends of the rotating seat respectively form a sliding connection with the corresponding guide portion so that the second movable seat can slide on the guide portion.

[0029] In one embodiment, one of the rotating components is a first direction rotating component, and the rotating seat in the first direction rotating component is arranged along the first direction relative to the rotation axis of the second fixed seat; and / or,

[0030] One of the rotating components is a second direction rotating component, and the rotating seat in the second direction rotating component is arranged along the second direction relative to the rotation axis of the second fixed seat; and / or,

[0031] One of the rotating components is a third-direction rotating component, and the rotating seat in the third-direction rotating component is arranged along the third direction relative to the rotation axis of the second fixed seat.

[0032] In one embodiment, there are at least three rotating components, which are divided into at least a first direction rotating component, a second direction rotating component and a third direction rotating component. The first direction rotating component, the second direction rotating component and the third direction rotating component are connected in series with each other, wherein the second fixed seat of the previous rotating component is fixed or connected as a whole with the rotating seat of the rear rotating component, the image projection device is installed on the rotating seat of the frontmost rotating component, and the second fixed seat of the rotating component at the rearmost end is fixedly connected to the shell or the translation adjustment structure.

[0033] In one embodiment, the first direction rotating assembly, the second direction rotating assembly, and the third direction rotating assembly are disposed around the circumference and bottom side of the image projection device to form a compact structure.

[0034] In one embodiment, the rotation axis of the first-direction rotation component, the rotation axis of the second-direction rotation component, and / or the rotation axis of the third-direction rotation component passes through the center of the virtual light source.

[0035] In one embodiment, the emitting element is arranged on the propagation path of the X-ray, and the emitting element is made of a material that can allow the X-ray to pass through. The side of the emitting element facing the X-ray limiting channel is a reflecting surface, and the emitting surface is arranged at an angle. The image projection device is arranged on the side of the emitting element, and the imaging light of the image projection device is projected toward the reflecting surface.

[0036] In one embodiment, the image includes light field additional information for displaying medical auxiliary information in the light field, and the light field additional information includes at least one of light field size, positioning marking line, patient information, exposure parameters, cross center line, ionization chamber position and small body positioning picture.

[0037] According to one aspect of the present application, an embodiment provides an X-ray imaging system, characterized in that it includes a head as described in any one of the above items and a detector for receiving X-rays emitted by the head.

[0038] The head of the X-ray imaging system according to the above-described embodiment includes a tube and a beam limiter. The beam limiter includes an X-ray limiting device, a reflector, an image projection device, and an adjustment device. The X-ray limiting device forms an X-ray limiting channel, through which X-rays emitted by the X-ray source pass through the X-ray limiting channel and exit the beam limiter. The image projection device includes a light source assembly capable of emitting multiple colors and a lens assembly for imaging. Illuminating light emitted by the light source assembly is transmitted through the lens assembly to form imaging light. This imaging light is reflected by the reflector into the X-ray limiting channel and then passes through the beam limiter through the X-ray limiting channel to form an image. The image includes a light field representing the area irradiated by the X-rays. The image projection device replaces traditional LED light sources. Because it can project images, the light field it creates is higher definition and easier to adjust. Furthermore, the image projection device is mounted on an adjustment device that adjusts the relative position of the image projection device and the reflector so that the virtual light source of the lens assembly coincides with the mirror image virtual light source formed by the reflector and the focus of the tube, thereby reducing the difficulty of assembling the image projection device and the reflector. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic diagram of the machine head projecting X-rays toward the bed surface below in one embodiment of the present application;

[0040] Figure 2 This is a schematic diagram of the machine head projecting X-rays toward a side column in one embodiment of the present application;

[0041] Figure 3 This is a schematic cross-sectional view of the nose of an embodiment of the present application;

[0042] Figure 4 Schematic diagram of the overlap of the virtual light source B of the lens assembly relative to the mirror image virtual light source B' formed by the reflector and the focus A of the tube in one embodiment of the present application;

[0043] Figure 5 Schematic diagram of a first direction (X-axis), a second direction (Y-axis), and a third direction (Z-axis) of a lens assembly of an image projection device in one embodiment of the present application;

[0044] Figure 6 This is a structural diagram of a translation adjustment structure in one embodiment of the present application;

[0045] Figure 7 This is a structural schematic diagram of a translation component of a translation adjustment structure in one embodiment of the present application;

[0046] Figure 8 This is a structural diagram of a translation adjustment structure and a rotation adjustment structure of an adjustment device in one embodiment of the present application;

[0047] Figure 9This is a schematic structural diagram of a rotating assembly of an adjusting device in one embodiment of the present application;

[0048] Figure 10 A schematic diagram of a partial structure of a rotation adjustment structure of an adjusting device in an embodiment of the present application;

[0049] Figure 11 A schematic diagram of a rotation adjustment structure of an adjusting device in an embodiment of the present application;

[0050] Figure 12 A schematic diagram of an image projection device mounted on a rotation adjustment structure in one embodiment of the present application;

[0051] Figure 13 and 14 This is a schematic diagram of a light field formed by an image projection device in an embodiment of the present application, where the light field shows its size.

[0052] Figure 15 Schematic diagram of a light field formed by an image projection device in one embodiment of the present application. In this case, the light field displays patient identification information, imaging site, and exposure parameters.

[0053] Figure 16 Schematic diagram of the light field formed by the image projection device in one embodiment of the present application. At this time, the light field is Figure 14 The ionization chamber position is also shown on the basis;

[0054] Figure 17 Schematic diagram of the light field formed by the image projection device in one embodiment of the present application. At this time, the light field is Figure 14 On this basis, a positioning guide pattern is also displayed. DETAILED DESCRIPTION

[0055] The present invention will be further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted in different circumstances, or may 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. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions, and for those skilled in the art, it is not necessary to describe these related operations in detail. They will fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0056] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.

[0057] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0058] The present application provides an X-ray imaging system, which emits X-rays to irradiate a patient to obtain an image of a certain part of the patient, thereby helping doctors to diagnose and treat the patient.

[0059] In some embodiments, the X-ray imaging system includes a handpiece for emitting X-rays and irradiating a patient, and a detector (e.g., a flat-panel detector) for receiving the X-rays emitted by the handpiece. The patient can be a human, an animal, or another subject. Of course, the X-ray imaging system may also include other components, such as a handpiece support component, etc. These components can be described in detail in the prior art and will not be further elaborated here.

[0060] The handpiece can irradiate the patient in various existing ways, for example, please refer to Figure 1 In one embodiment, the handpiece 100 is arranged above the bed surface 200, and the patient lies on the bed surface 200, and the handpiece 100 can irradiate the patient from top to bottom. Alternatively, please refer to Figure 2 In one embodiment, the handpiece 100 may be disposed on a side of the column 300 , and the patient stands between the column 300 and the handpiece 100 , and the handpiece 100 irradiates the patient from the side.

[0061] The handpiece 100 is used to emit X-rays and allow the X-rays to irradiate the patient at a set angle. Figure 3 and 4In some embodiments, the head 100 includes a tube 110 and a beam limiter 120. The tube 110 is used to generate an X-ray source and emit X-rays. The X-rays emitted from the tube 110 are emitted at a certain angle (tube target angle) and enter the cavity of the beam limiter 120. The beam limiter 120 has an X-ray limiting device 121, and the X-ray limiting device 121 forms an X-ray limiting channel 1211. The X-rays emitted by the X-ray source pass through the beam limiter 120 through the X-ray limiting channel 1211 to be emitted to the object to be inspected. The function of the X-ray limiting device 121 is to limit the range and area of ​​the X-ray emission beam limiter 120. For example, a commonly used lead window can be used but is not limited to it. Please refer to Figure 4 In some embodiments, the X-ray limiting channel 1211 of the X-ray limiting device 121 is a light exit port, from which some X-rays can be emitted, while some X-rays are blocked by the X-ray limiting device 121 and cannot be emitted, thereby forming an actual X-ray irradiation area (i.e., the X-ray light field) that can irradiate the patient.

[0062] Also, please refer to Figure 3 and 4 In some embodiments, the beam limiter 120 may further include a reflector 122 and an image projection device 123. The reflector 122 is disposed on the propagation path of the X-rays and is made of a material that is transparent to the X-rays. The side of the reflector 122 that faces the X-ray limiting channel 1211 is a reflective surface, which is inclined. The image projection device 123 is disposed to the side of the reflector 122. The imaging light of the image projection device 123 is directed toward the reflective surface, which then reflects the imaging light toward the X-ray limiting channel 1211.

[0063] The image projection device 123 is a device capable of projecting images and / or videos, and can be, for example, a common projector. The image projection device 123 comprises a light source assembly 1232 capable of emitting multiple colors and a lens assembly 1231 for imaging (e.g., Figure 3-5 As shown). The light source assembly 1232 may be, for example, but not limited to, a three-color LED (or a three-color laser). The lens assembly 1231 is an optical lens capable of transmitting the illumination light emitted by the light source assembly 1232 to form imaging light. It may be a single lens or a combination of two or more lenses. When the imaging light is projected onto a target, it forms an image. The imaging light is the light transmitted by the lens assembly 1231. It is different from the illumination light emitted by the light source assembly 1232. When projected onto a target, the illumination light only forms an illuminated area, but the imaging light can form a pattern when projected onto the target.

[0064] The image projection device 123 is positioned to the side of the reflector 122. The imaging light emitted by the image projection device 123 is reflected by the reflector 122 toward the X-ray limiting channel 1211, where it passes through the beam limiter 120. The X-ray limiting channel 1211 also constrains the imaging light, allowing some of it to exit from the light exit port while others are blocked by the X-ray limiting device 121 (e.g., a lead window). Ultimately, when the imaging light and X-rays irradiate the same target, the image formed by the imaging light and the X-ray irradiation area can overlap.

[0065] The image includes a light field 131 (eg, Figure 13 As shown). The light field 131 replaces the illumination area formed in the original LED light source (i.e., the light field of the LED light), and the original LED light source may not be provided in this device. Compared with the original LED light source that simply forms a light field through the illumination area, since the image projection device 123 itself has an imaging function, the light field 131 can be higher definition, and the color and brightness of the light field 131 can be adjusted by adjusting the parameters of the image projection device 123, which not only makes the display of the light field 131 more flexible, but also makes it easier for doctors to observe. Moreover, the image formed by the image projection device 123 can be either a picture or a video, or both can exist at the same time, thereby enriching the content that the doctor can see, providing more information and prompts to the doctor or other viewers, making it easier for the doctor to obtain information, assisting in shooting, and improving the convenience and accuracy of the operation.

[0066] Furthermore, X-rays are generated by the tube 110. In some embodiments, electrons excited by the cathode filament bombard the anode target surface. The area where the electrons impact the anode target surface is the location where X-rays are generated, which is called the X-ray focus (or tube focus A). Since the imaging light in the imaging mode of the image projection device 123 is almost cone-shaped and diffuses, it eventually reaches the imaging plane. When the image projection device 123 is assembled on the head 100 to achieve vertical projection relative to the patient, except for the point at the center of the screen, the light of all pixels on the screen will not be perpendicular to the imaging plane. This will cause the position of a certain pixel on the screen to change on the imaging plane after the projection distance changes, so that the image composed of each pixel will also move, thereby losing the clinical reference value of the projected image. The so-called clinical reference value of the projected image is relative to X-rays, that is, the field hopes that the projected lines or graphics, regardless of the projection distance, can remain unchanged relative to the irradiation range of the X-ray camera on the current imaging plane. For example, the image projection device 123 projects a square area on the bed. When the patient lies on the bed, the square image is displayed on the patient. At this time, the square image on the patient and the original square image on the bed are offset due to the light cone effect of the image projection device 123. However, regardless of how the square is offset, it is more desirable in the art that the X-rays passing through the patient remain consistent with the square image area projected onto the patient by the image projection device 123.

[0067] In order to achieve the above purpose, in some embodiments of this application, please refer to Figure 4 , so that the virtual light source B formed by the imaging light in the image projection device 123 relative to the lens assembly 1231 coincides with the focal point A of the tube 110, or the mirror image virtual light source B' formed by the virtual light source B relative to the reflector 122 coincides with the focal point A of the tube 110. This is equivalent to the imaging light and the X-rays being emitted from the same position. At any distance from the imaging surface, the range of the projected image formed by the imaging light and the irradiation range of the X-rays are the same. The "coincidence" here means that the center of the mirror image virtual light source B' coincides with the center of the focal point A, or the deviation is within a certain distance. As long as the range of the projected image formed by the imaging light and the irradiation range of the X-rays are the same at any projection distance, it is sufficient.

[0068] Specifically, the image projection device 123 includes a light source component 1232 capable of emitting multiple colors and a lens component 1231 for imaging (for example, Figure 4 and 5As shown). The virtual light source B formed by the imaging light relative to the lens assembly 1231 mentioned in the present application is not the position of the light source in the light source assembly 1232, but a virtual light source position determined according to the lens assembly 1231. After the imaging light is emitted from the surface of the lens assembly 1231, it diffuses outward in a cone shape, and the light beam of each pixel point on the projection screen (i.e., the image of the imaging light) is extended in the opposite direction from the lens assembly 1231 and converges to an area, such as a surface. This area is the virtual light source B of the lens assembly 1231. The mirror image virtual light source B' is the mirror image position formed by the virtual light source B relative to the reflector 122. When the mirror image virtual light source B' formed by the virtual light source B of the lens assembly 1231 relative to the reflector 122 coincides with the focus A of the tube, it can be ensured that the image projected by the image projection device 123 can always coincide with the irradiation area of ​​the X-ray.

[0069] In order to ensure that the virtual light source B' formed by the mirror image of the virtual light source B relative to the reflector 122 coincides with the focus A of the tube, the installation position of the image projection device 123 must be very precise, which undoubtedly increases the difficulty of assembling the image projection device 123. In order to reduce the difficulty of assembly and enable the image projection device 123 to be fine-tuned after assembly, please refer to Figure 3 In some embodiments, the beam limiter 120 further includes an adjusting device 124, and the image projection device 123 is mounted on the adjusting device 124. The adjusting device 124 is used to adjust the emission direction of the imaging light of the image projection device 123 so that the light field 131 formed by the image projection device 123 can remain coincident with the irradiation area of ​​the X-ray.

[0070] Furthermore, the position of the virtual light source B relative to the mirror image virtual light source B' formed by the reflector 122 is directly related to the relative position of the lens assembly 1231 and the reflector 122. Therefore, in some embodiments, the adjustment device 124 can adjust the relative position of the image projection device 123 and the reflector 122 so that the mirror image virtual light source B' formed by the virtual light source B relative to the reflector 122 coincides with the tube focus A of the tube 110. The adjustment device 124 can adjust the relative position of the image projection device 123 and the reflector 122 by adjusting the position of the image projection device 123, adjusting the position of the reflector 122, or adjusting the positions of the image projection device 123 and the reflector 122 simultaneously.

[0071] Further, in some embodiments, please refer to Figure 5 The image projection device 123 has a first direction (X axis), a second direction (Y axis) and a third direction (Z axis) that are perpendicular to each other. The first direction (X axis) is the axial direction of the lens assembly 1231, and the second direction (Y axis) and the third direction (Z axis) are radial directions of the lens assembly 1231. Figure 6In some embodiments, the adjustment device 124 has a translation adjustment structure 1241, which can drive the image projection device 123 to translate relative to the reflector 122 along at least one of the first direction (X axis), the second direction (Y axis), and the third direction (Z axis), thereby adjusting the relative position of the lens assembly 1231 and the reflector 122. Figure 3 From the perspective of the present invention, the translation adjustment structure 1241 can adjust the image projection device 123 relative to the reflector 122 to one of the forward and backward translations (along the first direction), left and right translations (along the second direction), and up and down translations (along the third direction) as shown in the figure, so that after the image projection device 123 is roughly assembled, the position of the image projection device 123 can be fine-tuned to reduce the difficulty of assembling the image projection device 123.

[0072] Further, in some embodiments, please refer to Figure 3 The beam limiter 120 has a housing 125. The housing 125 can serve as a supporting structure for the beam limiter 120. The X-ray limiting device 121, the reflector 122, and the adjustment device 124 can all be mounted on the housing 125 and mounted to the supporting structure of the handpiece 100 through the housing 125. For example, please refer to Figure 11 In one embodiment, the adjustment device 124 can be fixed to the housing 125 directly or indirectly via a mounting plate 1245 .

[0073] For some examples, please refer to Figure 6 and 7 To achieve translational adjustment, the translational adjustment structure 1241 includes at least one translational assembly 1242. The translational assembly 1242 includes a first movable seat 12421, a first fixed seat 12422 for supporting the first movable seat 12421, and a first translational adjustment member 12423 for adjusting the position of the first movable seat 12421. The first fixed seat 12422 is directly or indirectly mounted on the housing 125, that is, the first fixed seat 12422 can be directly fixed to the housing 125 or connected to the housing 125 via other components. The first movable seat 12421 is movably mounted on the first fixed seat 12422 to provide a movable space. The image projection device 123 is directly or indirectly mounted on the first movable seat 12421, that is, the image projection device 123 can be directly fixed to the first movable seat 12421, or it can be transferred to the first movable seat 12421 through other components (such as other transfer structures or other adjustment structures, such as the subsequent rotation adjustment structure 1243).

[0074] The first translation adjustment member 12423 is used by the installer to perform fine translation adjustment on the image projection device 123 so that the image projection device 123 is positioned correctly relative to the reflective member 122. The first translation adjustment member 12423 can be an electrically controlled adjustment member, such as an adjustment member driven by a motor or other driving member, or a manually controlled adjustment member.

[0075] Please refer to Figure 7 In some embodiments, the first translation adjustment member 12423 is an adjustment screw, which is mounted on the first movable seat 12421 and forms a screw-nut structure. The adjustment screw controls the movement of the first movable seat 12421 on the first fixed seat 12422. Turning the adjustment screw causes the first movable seat 12421 to translate on the first fixed seat 12422. The screw-nut structure formed by the adjustment screw and the first movable seat 12421 enables fine adjustments, thereby more accurately adjusting the position of the first movable seat 12421 and the image projection device 123. In some embodiments, the adjustment screw can be a fine-thread screw to further improve adjustment accuracy.

[0076] The movable structure formed between the first movable seat 12421 and the first fixed seat 12422 can adopt, but is not limited to, a sliding fit or a rolling fit.

[0077] Please refer to Figure 7 In some embodiments, the first fixed seat 12422 has a mounting cavity 12424, and the mounting cavity 12424 has a pair of oppositely disposed cavity walls, each of which is provided with a guide portion. The first movable seat 12421 is disposed within the mounting cavity 12424, and the opposite ends of the first movable seat 12421 are respectively slidably connected to the corresponding guide portions so that the first movable seat 12421 can slide on the guide portions. In this embodiment, the opposite ends of the first movable seat 12421 are respectively matched with the pair of oppositely disposed cavity walls of the mounting cavity 12424, not only making the support of the first fixed seat 12422 for the first movable seat 12421 more stable, but also making the sliding process smoother.

[0078] Please refer to Figure 7 In some embodiments, the guide portion is a guide groove 12425, and the first movable seat 12421 has sliders at opposite ends, which slide in slidable engagement with the corresponding guide groove 12425. In other embodiments, the guide portion may also be a guide rail or a guide post, and the first movable seat 12421 may have a slide groove or a slide hole that engages with the guide rail.

[0079] For further information, please refer to Figure 7In some embodiments, the first fixed seat 12422 has an annular structure, the inner ring of which forms a mounting cavity 12424. The first movable seat 12421 is disposed within the annular structure. The annular structure can circumferentially limit the first movable seat 12421 and also protect the first movable seat 12421, preventing other components from colliding with the first movable seat 12421 and causing displacement of the first movable seat 12421. The first movable seat 12421 is exposed from the inner ring opening of the annular structure, allowing the first movable seat 12421 to interface with other components, such as the image projection device 123, the rotation adjustment structure 1243, or other components.

[0080] For further information, please refer to Figure 7 In some embodiments, in order to form the annular structure, the first fixed seat 12422 may include a fixed seat body 12422a and a cover plate 12422b, the cover plate 12422b is fixedly installed on the fixed seat body 12422a, a cavity is provided in the middle of the fixed seat body 12422a, and the cover plate 12422b has a through hole, and the through hole and the cavity surround the above-mentioned installation cavity 12424.

[0081] Of course, in other embodiments, the first fixed seat 12422 is not limited to a ring structure and can also be designed into other shapes. For example, the first fixed seat 12422 is U-shaped, and the first movable seat 12421 is movably disposed in the groove of the U-shaped structure. In addition, the first fixed seat 12422 can also be designed into a linear shape, and the first movable seat 12421 is slidably connected to the linear first fixed seat 12422.

[0082] Furthermore, the above-mentioned translation assembly 1242 can be used as a translation structure in any direction. Of course, the translation structure in any direction can also be implemented by using other translation structures other than the above-mentioned translation assembly 1242, and is not limited to the translation assembly 1242.

[0083] For example, in some embodiments, one translation assembly 1242 is a first-direction translation assembly 1242a, and the first movable seat 12421 in the first-direction translation assembly 1242a is arranged along the first direction (X-axis) relative to the movement direction of the first fixed seat 12422; and / or,

[0084] One translation assembly 1242 is a second direction translation assembly 1242b, and the first movable seat 12421 in the second direction translation assembly 1242b is arranged along the second direction (Y axis) relative to the moving direction of the first fixed seat 12422; and / or,

[0085] One translation assembly 1242 is a third-direction translation assembly 1242 c , and the first movable seat 12421 in the third-direction translation assembly 1242 c is arranged along the third direction (Z axis) relative to the moving direction of the first fixed seat 12422 .

[0086] In some embodiments, there are at least three translation components 1242 , which are divided into at least a first-direction translation component 1242 a , a second-direction translation component 1242 b , and a third-direction translation component 1242 c .

[0087] The first-direction translation assembly 1242a, the second-direction translation assembly 1242b, and the third-direction translation assembly 1242c are connected in series, that is, the first-direction translation assembly 1242a, the second-direction translation assembly 1242b, and the third-direction translation assembly 1242c are connected in sequence. However, the direction of the series connection can be arbitrarily selected as needed and is not limited to the order of the first-direction translation assembly 1242a, the second-direction translation assembly 1242b, and the third-direction translation assembly 1242c. The first fixed base 12422 of the preceding translation assembly 1242 is mounted on the first movable base 12421 of the succeeding translation assembly 1242. The image projection device 123 is directly or indirectly mounted on the first movable base 12421 of the leading translation assembly 1242. The first fixed base 12422 of the trailing translation assembly 1242 is fixedly connected to the housing 125. The front-to-back direction means that, in the entire motion transmission relationship, the translation assembly 1242 closest to the image projection device 123 (e.g., the translation assembly 1242 used to mount the image projection device 123) is the front end, and the translation assembly 1242 farthest from the image projection device 123 is the rear end. This serial connection allows the translation functions of the first-direction translation assembly 1242a, the second-direction translation assembly 1242b, and the third-direction translation assembly 1242c to be superimposed on each other, ultimately enabling the entire translation adjustment structure 1241 to achieve translation in the first direction (X-axis), the second direction (Y-axis), and the third direction (Z-axis).

[0088] Please refer to Figure 6 and 8 As a specific example of a serial connection structure, in this embodiment, the second-direction translation assembly 1242b, the first-direction translation assembly 1242a, and the third-direction translation assembly 1242c are serially connected in sequence, wherein the second-direction translation assembly 1242b is the translation assembly 1242 closest to the image projection device 123 in terms of motion transmission, and the third-direction translation assembly 1242c is the translation assembly 1242 farthest from the image projection device 123 in terms of motion transmission. The mounting plate 1245 for connecting the housing 125 is fixedly connected to the first fixing base 12422 of the third-direction translation assembly 1242c.

[0089] Specifically, please refer to Figure 6 and 8 In this embodiment, the image projection device 123 is directly or indirectly mounted on the first movable seat 12421 of the second direction translation component 1242b, the first fixed seat 12422 of the second direction translation component 1242b is connected to the first movable seat 12421 of the first direction translation component 1242a, the first fixed seat 12422 of the first direction translation component 1242a is connected to the first movable seat 12421 of the third direction translation component 1242c, and the first fixed seat 12422 of the third direction translation component 1242c is directly or indirectly fixedly connected to the shell 125.

[0090] Of course, according to this design concept, the first direction translation component 1242a, the second direction translation component 1242b and the third direction translation component 1242c can also be connected in series in other orders, which will not be repeated here.

[0091] On the other hand, in addition to adjusting the positional relationship between the image projection device 123 and the reflector 122 by translating the image projection device 123, in some embodiments, an adjustment device 124 may be connected to the reflector 122 to adjust the tilt angle of the reflector 122 relative to the image projection device 123, so that the virtual light source B' formed by the mirror image of the virtual light source B relative to the reflector 122 coincides with the focus A of the tube 110. Similarly, in this embodiment, the adjustment device 124 may also be an electrically controlled adjustment structure and / or a manually adjustable structure.

[0092] Alternatively, in other embodiments, the adjustment device 124 may also have a structure for adjusting the image projection device 123 and the reflective element 122 .

[0093] Furthermore, based on the above embodiments, in some embodiments, the adjustment device 124 may have a rotation adjustment structure 1243 , which can drive the image projection device 123 to rotate to rotationally adjust the angle of the image projected by the image projection device 123 .

[0094] In some embodiments, the rotation adjustment structure 1243 can drive the image projection device 123 to rotate along at least one of a first direction (X-axis), a second direction (Y-axis), and a third direction (Z-axis).

[0095] For some examples, please refer to Figure 9To achieve rotational adjustment, the rotational adjustment structure 1243 includes at least one rotational assembly 1244. The rotational assembly 1244 includes a rotational base 12442, a second fixed base 12441 for supporting the rotational base 12442, and a rotational adjustment member 12443 for adjusting the position of the rotational base 12442. The second fixed base 12441 is directly or indirectly mounted on the housing 125 or the translational adjustment structure 1241, such as directly mounted on the housing 125 or the translational adjustment structure 1241, or indirectly mounted on the housing 125 or the translational adjustment structure 1241 via other components. The rotational base 12442 is rotationally connected to the second fixed base 12441, for example, via a rotating shaft or other rotational connection structure. The image projection device 123 is directly or indirectly mounted on the rotational base 12442, such as directly mounted on the rotational base 12442, or indirectly mounted on the rotational base 12442 via other components.

[0096] The rotary adjustment member 12443 is used by the installer to rotate and adjust the image projection device 123 so that the image projected by the image projection device 123 is in the correct position. The rotary adjustment member 12443 can be an electrically controlled adjustment member, such as an adjustment member driven by a motor or other driving member, or a manually controlled adjustment member.

[0097] Please refer to Figure 9 In some embodiments, the rotation adjustment member 12443 includes a third fixed base 12443f, a second movable base 12443a, and a second translation adjustment member 12443d. The third fixed base 12443f is directly or indirectly fixedly mounted on the second fixed base 12441. The second movable base 12443a is movably mounted on the third fixed base 12443f. The second translation adjustment member 12443d is connected to the second movable base 12443a to control the translation of the second movable base 12443a relative to the third fixed base 12443f. The rotating base 12442 is mounted on the second movable base 12443a. The second translation adjustment member 12443d is used to control the translation of the second movable base 12443a, thereby controlling the rotation of the rotating base 12442 relative to the second fixed base 12441.

[0098] In some embodiments, please refer to Figure 9 The rotation adjustment member 12443 adopts the structure of the above-mentioned translation component 1242.

[0099] Please refer to Figure 9In some embodiments, the second translation adjustment member 12443d is an adjustment screw mounted on the second movable seat 12443a to form a screw-nut structure. This adjustment screw controls the movement of the second movable seat 12443a on the third fixed seat 12443f. The screw-nut structure formed by the adjustment screw and the second movable seat 12443a enables fine adjustments, thereby more accurately adjusting the positions of the second movable seat 12443a and the rotating seat 12442. In some embodiments, the adjustment screw can be a fine-thread screw to further improve adjustment accuracy.

[0100] Please refer to Figure 9 In some embodiments, the third fixed seat 12443f has a mounting cavity 12443e, and the mounting cavity 12443e has a pair of oppositely disposed cavity walls, each cavity wall being provided with a guide portion. The second movable seat 12443a is disposed within the mounting cavity 12443e, and the opposite ends of the second movable seat 12443a are respectively slidably connected to the corresponding guide portions so that the second movable seat 12443a can slide on the guide portions. In this embodiment, the opposite ends of the second movable seat 12443a are respectively mated with the pair of oppositely disposed cavity walls of the mounting cavity 12443e, not only making the third fixed seat 12443f more stably support the second movable seat 12443a, but also making the sliding process smoother.

[0101] Please refer to Figure 9 In some embodiments, the guide portion is a guide groove, and the second movable seat 12443a has sliders at opposite ends thereof, which slide in slidable engagement with the corresponding guide grooves. Furthermore, in other embodiments, the guide portion may be a guide rail or a guide post, and the second movable seat 12443a may have a slide groove or a slide hole that engages with the guide rail.

[0102] For further information, please refer to Figure 9 In some embodiments, the third fixed seat 12443f has an annular structure, the inner ring of which forms a mounting cavity 12443e. The second movable seat 12443a is disposed within the annular structure. The annular structure can circumferentially limit the second movable seat 12443a and also protect the second movable seat 12443a, preventing other components from colliding with the second movable seat 12443a and causing displacement of the second movable seat 12443a. The second movable seat 12443a is exposed from the inner ring opening of the annular structure to facilitate docking with other components, such as the rotating seat 12442.

[0103] For further information, please refer to Figure 9In some embodiments, in order to form the annular structure, the third fixing seat 12443f may include a second fixing seat 12443b and a second cover plate 12443c, and the second cover plate 12443c is fixedly installed on the second fixing seat 12443b, and a cavity is provided in the middle of the second fixing seat 12443b, and the second cover plate 12443c has a through hole, and the through hole and the cavity surround the above-mentioned installation cavity 12443e.

[0104] Of course, in other embodiments, the third fixed seat is not limited to a ring structure and can be designed in other shapes. For example, the third fixed seat is U-shaped, and the second movable seat 12443a is movably disposed in the groove of the U-shaped structure. In addition, the third fixed seat can also be designed in a linear shape, and the second movable seat 12443a is slidably connected to the linear third fixed seat.

[0105] In other embodiments, the rotation adjustment member 12443 may also adopt other translation structures besides the above-mentioned translation component 1242.

[0106] Considering the interference between the translation movement of the second movable seat 12443a and the rotation movement of the rotating seat 12442 relative to the second fixed seat 12441, in some embodiments, please refer to Figure 9 and 10 The second movable seat 12443a has a connecting pin 12444, and the rotating seat 12442 is provided with a second guide groove 12445. The guiding direction of the second guide groove 12445 is perpendicular to the moving direction of the second movable seat 12443a. The connecting pin 12444 is inserted into the second guide groove 12445. During the translation of the second movable seat 12443a relative to the third fixed seat 12443f, the connecting pin 12444 can slide in the second guide groove 12445 to avoid interference between the translation movement of the second movable seat 12443a and the rotation movement of the rotating seat 12442 relative to the second fixed seat 12441.

[0107] In addition, please refer to Figure 9 In some embodiments, to ensure that the rotating base 12442 can be fixed at a set rotation angle relative to the second fixed base 12441, the second fixed base 12441 can be provided with an adjustment slot 12446, and the rotating base 12442 is fixed to the second fixed base 12441 via a locking screw 12447. The size of the adjustment slot 12446 is larger than the size of the locking screw 12447, and the locking screw 12447 can move within the adjustment slot 12446 along with the rotating base 12442 and be locked at the desired rotational position.

[0108] In addition, in addition to driving the rotating seat 12442 to rotate by translation, the rotating adjustment member 12443 can also adjust the rotational movement of the rotating seat 12442 and the second fixed seat 12441 through other rotation adjustment structures. For example, the rotating adjustment member 12443 can be driven by a motor to rotate.

[0109] Furthermore, the rotating assembly 1244 can be used as a rotating structure in any direction. Of course, the rotating structure in any direction can also be implemented by other rotating structures other than the rotating assembly 1244, and is not limited to the rotating assembly 1244.

[0110] For example, in some embodiments, one rotating assembly 1244 is a first direction rotating assembly 1244a, and the rotating seat 12442 in the first direction rotating assembly 1244a is arranged along the first direction (X axis) relative to the rotation axis of the second fixed seat 12441; and / or,

[0111] One rotating assembly 1244 is a second direction rotating assembly 1244b, and the rotating base 12442 in the second direction rotating assembly 1244b is arranged along the second direction (Y axis) relative to the rotation axis of the second fixed base 12441; and / or,

[0112] One of the rotating components 1244 is a third-direction rotating component 1244 c . The rotating base 12442 in the third-direction rotating component 1244 c is disposed along the third direction (Z-axis) relative to the rotation axis of the second fixed base 12441 .

[0113] Furthermore, in one embodiment, there are at least three rotating components 1244, which are divided into at least a first direction rotating component 1244a, a second direction rotating component 1244b and a third direction rotating component 1244c. The first direction rotating component 1244a, the second direction rotating component 1244b and the third direction rotating component 1244c are connected in series, that is, the first direction rotating component 1244a, the second direction rotating component 1244b and the third direction rotating component 1244c are connected in sequence, but the series connection direction can be arbitrarily selected according to needs and is not limited to the order of the first direction rotating component 1244a, the second direction rotating component 1244b and the third direction rotating component 1244c. The second fixing seat 12441 of the previous rotating component 1244 is fixed or connected to the rotating seat 12442 of the next rotating component 1244 as a whole, as shown in Figure 10In the illustrated embodiment, the rotating base 12442 of the second-direction rotating assembly 1244b and the second fixed base 12441 of the first-direction rotating assembly 1244a are integrally formed. The image projection device 123 is mounted on the rotating base 12442 of the forward-most rotating assembly 1244, while the second fixed base 12441 of the rearward-most rotating assembly 1244 is fixedly connected to the housing 125 or the translation adjustment structure 1241. The front-to-back direction refers to the fact that, in the overall motion transmission relationship, the rotating assembly 1244 closest to the image projection device 123 (e.g., the rotating assembly 1244 used to mount the image projection device 123) is the forward-most position, and the rotating assembly 1244 farthest from the image projection device 123 is the rearward-most position. This series connection can make the various rotation functions realized by the first direction rotation component 1244a, the second direction rotation component 1244b and the third direction rotation component 1244c superimpose on each other, and ultimately enable the entire rotation adjustment structure 1243 to realize rotation in three directions: the first direction (X-axis), the second direction (Y-axis) and the third direction (Z-axis).

[0114] Please refer to Figure 10-12 As a specific example of a serial connection structure, in this embodiment, the third direction rotation component 1244c, the first direction rotation component 1244a, and the second direction rotation component 1244b are serially connected in sequence, wherein the third direction rotation component 1244c is the rotation component 1244 closest to the image projection device 123 in the motion transmission relationship, and the second direction translation component 1242b is the rotation component 1244 farthest from the image projection device 123 in the motion transmission relationship. The second fixed base 12441 of the second direction translation component 1242b is fixedly connected to the first movable base 12421 of the second direction translation component 1242b. Figure 10-12 In the illustrated embodiment, the image projection device 123 is fixedly mounted on the rotating base 12442 of the third directional rotating assembly 1244c.

[0115] Of course, the first direction rotating component 1244a, the second direction rotating component 1244b and the third direction rotating component 1244c may also be connected in series in other orders, which will not be elaborated here.

[0116] Furthermore, in some embodiments, the rotation axis of the first direction rotation component 1244a, the rotation axis of the second direction rotation component 1244b and / or the rotation axis of the third direction rotation component 1244c passes through the center of the virtual light source B.

[0117] In particular, when the rotation axes of the first direction rotation component 1244a, the second direction rotation component 1244b and the third direction rotation component 1244c all pass through the center of the virtual light source B, adjusting the rotational degree of freedom will not affect the adjustment of the translational degree of freedom.

[0118] For further information, please refer to Figure 8 and 10 In some embodiments, the first direction rotating assembly 1244a, the second direction rotating assembly 1244b, and the third direction rotating assembly 1244c are disposed around the circumference and bottom side of the image projection device 123 to form a compact structure.

[0119] Specifically, please refer to Figure 10 In some embodiments, the third direction rotation component 1244c and the first direction rotation component 1244a are arranged on the periphery of the image projection device 123, and the second direction rotation component 1244b is arranged on the bottom side of the image projection device 123 to wrap around the image projection device 123, so that the entire rotation adjustment structure and the image projection device 123 form a more compact structure.

[0120] The above embodiments provide some mechanical methods for achieving image rotation of the image projection device 123. In other embodiments, if the image projection orientation of the image projection device 123 is not correct, software algorithms can be used to adjust the projected image to a desired rotation angle.

[0121] Furthermore, in some embodiments, the image also includes additional light field information for displaying auxiliary medical information in the light field 131. The additional light field information can display auxiliary information that is helpful to the doctor's operation, such as, but not limited to, at least one of light field size, positioning markers, patient information, exposure parameters, cross centerline, ionization chamber position, and small body positioning images.

[0122] Please refer to Figure 13-17 The crosshairs in the figure (mostly red in practice) are the crosshairs 132 of the light field 131. In conventional beam limiters, the crosshairs of the light field 131 are formed by a shadow cross pattern created by a cross-shaped light window (a transparent glass plate with crosshairs attached) blocking the light from the LED light source. In contrast, the image projection device 123 in this application can directly project a crosshair pattern to form the crosshairs 132.

[0123] Please refer to Figure 13 and 17, the figure shows that the light field size is displayed on the light field 131. After adjusting the light field 131, the doctor usually needs to know the current size of the light field 131, that is, the side length of the light field 131. In traditional X-ray imaging systems, because the LED light source can only display the light field in the form of lighting, its light field cannot be displayed in any text. The light field size information is usually viewed on the head 100 or the PC display screen. However, when the doctor is guiding the patient's positioning, the line of sight is mainly on the patient, that is, the light field 131 is directly seen. Therefore, after the light field 131 is formed by the image projection device 123, the light field size can be directly displayed in the light field 131. Figure 13 and 17 In the example, the size of the current light field 131 is displayed in different forms. Of course, the display of the light field size is not limited to Figure 13 and 17 shown in the form.

[0124] Please refer to Figure 15 In some embodiments, the light field 131 may also display patient information, exposure parameters, and photographed area information. Figure 16 In some embodiments, the light field 131 may also display the position of the ionization chamber 133, as shown in the small box in the figure. Figure 17 In some embodiments, the light field 131 may further display a positioning guidance pattern, such as the right-hand pattern 134 shown in the figure. In addition, the positioning guidance pattern may also include but is not limited to a body position map, posture information, etc.

[0125] Of course, the above Figure 13-17 This is merely an illustration of some specific examples of the light field additional information. In other embodiments, the light field additional information may also include but is not limited to advertisements, teaching videos, child comforting videos and other videos.

[0126] Compared with the original LED light source that simply forms the light field 131 through the illumination area, the image projection device 123 is used to form the image. By utilizing its own imaging function, it can not only display the X-ray light field 131 (displayed through the light field 131), but also integrate more information in the light field 131, making it more convenient for doctors to obtain information, assist in shooting, and improve the convenience and accuracy of operation.

[0127] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art can make several simple deductions, modifications or substitutions based on the concept of the present invention.

Claims

1. A head of an X-ray imaging system, characterized in that: include: A tube, which is used to generate an X-ray source and emit X-rays; and a beam limiter, the beam limiter comprising an X-ray limiting device, a reflective element, an image projection device, and an adjustment device, the X-ray limiting device forming an X-ray limiting channel, the X-rays emitted by the X-ray source passing through the beam limiter through the X-ray limiting channel to be emitted toward the object to be inspected; The image projection device is capable of emitting imaging light, which is reflected by the reflective member to the X-ray limiting channel and passes through the beam limiter through the X-ray limiting channel to form an image, wherein the image includes a light field representing an irradiation area of ​​the X-ray; The image projection device is installed on the adjustment device, and the adjustment device can adjust the relative position of the image projection device and the reflector so that the mirror virtual light source of the virtual light source formed by the imaging light relative to the image projection device on the reflector coincides with the tube focus of the tube.

2. The handpiece according to claim 1, wherein: The image projection device comprises a light source component capable of emitting multiple colors and a lens component for forming an image. The illumination light emitted by the light source component is transmitted through the lens component to form the imaging light.

3. The handpiece according to claim 2, wherein: The adjustment device has a translation adjustment structure, and the image projection device has a first direction, a second direction and a third direction that are perpendicular to each other. The first direction is the axial direction of the lens assembly, and the second direction and the third direction are radial directions of the lens assembly. The translation adjustment structure can drive the image projection device to translate relative to the reflector along at least one direction of the first direction, the second direction and the third direction.

4. The handpiece according to claim 3, wherein: The beam limiter has a shell, the adjustment device is installed on the shell, the translation adjustment structure includes at least one translation component, the translation component includes a first movable seat, a first fixed seat for supporting the first movable seat and a first translation adjustment member for adjusting the position of the first movable seat, the first fixed seat is directly or indirectly installed on the shell, the first movable seat is movably mounted on the first fixed seat, and the image projection device is directly or indirectly installed on the first movable seat.

5. The handpiece according to claim 4, wherein: The first translation adjustment member is an adjustment screw, which is installed on the first movable seat and forms a screw-nut structure, so that the first movable seat can be controlled to move on the first fixed seat through the adjustment screw.

6. The handpiece according to claim 4, wherein: The first fixed seat has an installation cavity, the installation cavity has a pair of cavity walls arranged opposite to each other, each cavity wall is provided with a guide portion, the first movable seat is arranged in the installation cavity, and the opposite ends of the first movable seat are respectively slidably connected with the corresponding guide portions so that the first movable seat can slide on the guide portions.

7. The handpiece according to claim 6, wherein: The first fixed seat has an annular structure, the inner ring of the annular structure forms a mounting cavity, the first movable seat is arranged in the annular structure, and the first movable seat is exposed from the inner ring opening of the annular structure so that the first movable seat can be docked with other components.

8. The handpiece according to claim 7, wherein: The guide portion is a guide groove, and the first movable seat has sliders at two opposite ends respectively, and the sliders are slidably matched with the corresponding guide grooves.

9. The handpiece according to any one of claims 4 to 8, wherein: One of the translation assemblies is a first-direction translation assembly, wherein the first movable seat in the first-direction translation assembly is arranged along the first direction relative to the moving direction of the first fixed seat; and / or, One of the translation assemblies is a second-direction translation assembly, wherein the first movable seat in the second-direction translation assembly is arranged along the second direction relative to the moving direction of the first fixed seat; and / or, One of the translational components is a third-direction translational component, and the first movable seat in the third-direction translational component is arranged along the third direction relative to the moving direction of the first fixed seat.

10. The handpiece according to claim 9, wherein: There are at least three translation assemblies, which are divided into at least a first direction translation assembly, a second direction translation assembly and a third direction translation assembly. The first direction translation assembly, the second direction translation assembly and the third direction translation assembly are connected in series with each other, wherein the first fixed seat of the previous translation assembly is installed on the first movable seat of the next translation assembly, the image projection device is installed on the first movable seat of the frontmost translation assembly, and the first fixed seat of the rearmost translation assembly is fixedly connected to the shell.

11. The handpiece according to any one of claims 2 to 10, characterized in that: The adjustment device is connected to the reflector and is used to adjust the inclination angle of the reflector relative to the image projection device so that the mirror image virtual light source of the virtual light source formed by the imaging light relative to the lens assembly on the reflector coincides with the tube focus of the tube.

12. The handpiece according to any one of claims 2 to 11, characterized in that: The adjustment device has a rotation adjustment structure, and the rotation adjustment structure can drive the image projection device to rotate so as to rotationally adjust the angle of the image projected by the image projection device.

13. The handpiece according to claim 12, wherein: The image projection device has a first direction, a second direction and a third direction that are perpendicular to each other. The first direction is the axial direction of the lens assembly, and the second direction and the third direction are radial directions of the lens assembly. The rotation adjustment structure can drive the image projection device to rotate along at least one of the first direction, the second direction and the third direction.

14. The handpiece according to claim 13, wherein: The beam limiter has a shell, the adjustment device is installed on the shell, the rotation adjustment structure includes at least one rotating component, the rotating component includes a rotating seat, a second fixed seat for supporting the rotating seat and a rotating adjustment member for adjusting the position of the rotating seat, the second fixed seat is directly or indirectly installed on the shell or the translation adjustment structure, the rotating seat is rotatably connected to the second fixed seat, and the image projection device is directly or indirectly installed on the rotating seat.

15. The handpiece according to claim 14, wherein: The rotation adjustment member includes a third fixed base, a second movable base, and a second translation adjustment member, wherein the third fixed base is fixedly mounted on the second fixed base, the second movable base is movably mounted on the third fixed base, and the second translation adjustment member is connected to the second movable base to control the translation of the second movable base relative to the third fixed base; The rotating seat is installed on the second movable seat, and the second translation adjustment member is used to control the translation of the second movable seat to control the rotating seat to rotate relative to the second fixed seat.

16. The handpiece according to claim 15, wherein: The second translation adjustment member is an adjustment screw, which is installed on the second movable seat and forms a screw-nut structure, so that the second movable seat can be controlled to move on the third fixed seat through the adjustment screw.

17. The handpiece according to claim 15, wherein: The second movable seat has a connecting pin, and the rotating seat is provided with a second guide groove. The guiding direction of the second guide groove is perpendicular to the moving direction of the second movable seat. The connecting pin is inserted into the second guide groove. During the translation of the second movable seat relative to the third fixed seat, the connecting pin can slide in the second guide groove to avoid interference between the translation movement of the second movable seat and the rotation movement of the rotating seat relative to the second fixed seat.

18. The handpiece according to any one of claims 15 to 17, wherein: The third fixed seat has an installation cavity, which has a pair of oppositely arranged cavity walls, each of which is provided with a guide portion. The second movable seat is arranged in the installation cavity, and the opposite ends of the rotating seat are respectively connected to the corresponding guide portions to form a sliding connection so that the second movable seat can slide on the guide portion.

19. The handpiece according to any one of claims 13 to 18, wherein: One of the rotating components is a first direction rotating component, and the rotating seat in the first direction rotating component is arranged along the first direction relative to the rotation axis of the second fixed seat; and / or, One of the rotating components is a second direction rotating component, and the rotating seat in the second direction rotating component is arranged along the second direction relative to the rotation axis of the second fixed seat; and / or, One of the rotating components is a third-direction rotating component, and the rotating seat in the third-direction rotating component is arranged along the third direction relative to the rotation axis of the second fixed seat.

20. The handpiece according to claim 19, wherein: There are at least three rotating components, which are divided into at least a first direction rotating component, a second direction rotating component and a third direction rotating component. The first direction rotating component, the second direction rotating component and the third direction rotating component are connected in series with each other, wherein the second fixed seat of the previous rotating component is fixed or connected as a whole with the rotating seat of the rear rotating component, the image projection device is installed on the rotating seat of the frontmost rotating component, and the second fixed seat of the rotating component at the rearmost end is fixedly connected to the shell or the translation adjustment structure.

21. The handpiece according to claim 19, wherein: The first direction rotating assembly, the second direction rotating assembly and the third direction rotating assembly are arranged around the circumference and bottom side of the image projection device to form a compact structure.

22. The handpiece according to claim 19, wherein: The rotation axis of the first direction rotation component, the rotation axis of the second direction rotation component and / or the rotation axis of the third direction rotation component passes through the center of the virtual light source.

23. The handpiece according to any one of claims 1 to 22, wherein: The emitting element is arranged on the propagation path of the X-ray, and the emitting element is made of a material that can allow the X-ray to pass through. The side of the emitting element facing the X-ray limiting channel is a reflecting surface, and the emitting surface is arranged at an angle. The image projection device is arranged on the side of the emitting element, and the imaging light of the image projection device is projected toward the reflecting surface.

24. The handpiece according to any one of claims 1 to 23, wherein: The image includes light field additional information for displaying medical auxiliary information in the light field, and the light field additional information includes at least one of light field size, positioning marking line, patient information, exposure parameters, cross center line, ionization chamber position and small body positioning picture.

25. An X-ray imaging system, characterized in that: It comprises a handpiece as described in any one of claims 1-24 and a detector for receiving X-rays emitted by the handpiece.

Images