Image calibration device

Abstract

The utility model belongs to the technical field of medical imaging, and provides an image calibration device, which comprises a body module assembly; the adjusting assembly is connected with the body mold assembly, and the adjusting assembly is configured to adjust the degree of freedom of the body mold assembly so as to adjust the body mold assembly to the rotating axis of the C-arm machine; when the body module assembly is used, the body module assembly is fixed to the storage assembly through the adjusting assembly, and when the body module assembly is not used, the body module assembly and the adjusting assembly are stored in the storage assembly. According to the storage assembly provided by the invention, when the C-arm machine is calibrated, the storage assembly can provide support for installation of the adjusting assembly and the body mold assembly, rapid fixed installation of the adjusting assembly away from the end of the body mold assembly is achieved, and after calibration is completed, the adjusting assembly and the body mold assembly can be stored in the storage assembly; the image calibration device is portable and can be transferred timely. In addition, by arranging the adjusting assembly, the body mold assembly can be rapidly adjusted in place, and the calibration efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of medical imaging technology, and particularly to an image calibration device. Background Art

[0002] The C-arm X-ray machine, also known as the C-arm, is an X-ray imaging device used in interventional radiology and orthopedic surgeries. The C-arm can generate three-dimensional reconstructed images through a circular scan of more than 180 degrees of the target.

[0003] Ideally, the ray source point on the C-arm and the flat panel detector form a regular square pyramid. However, there are offsets and rotations between the actual detector and the ideal detector. The three-dimensional reconstruction algorithm is modeled and reconstructed under ideal conditions. Due to the deviation in the positions of the actual detector and the ray source, it is necessary to obtain the actual positional relationship between the two through calibration before performing three-dimensional reconstruction.

[0004] The calibration process can be simply described as performing a circular scan on a phantom and three-dimensional reconstruction. The parameters of the phantom can be measured in advance by a high-precision instrument, so as to establish a connection between the parameters of the three-dimensional reconstructed image through conversion and the actual parameters. To ensure uniformity in all directions, the phantom used for calibration is generally designed to be cylindrical to ultimately achieve the purpose of making the axis of the cylinder coincide with the axis of the circular scan rotation.

[0005] With the long-term use of the C-arm, the C-arm needs to be regularly maintained and precision calibrated. However, during the on-site calibration process, there are problems such as the calibration tooling being inconvenient to carry, difficult to assemble and fix, which reduces the calibration efficiency. Utility Model Content

[0006] The embodiments of this application provide an image calibration device, which is provided with a storage component, thus being conducive to portability and facilitating assembly and fixation.

[0007] The embodiments of this application provide an image calibration device for calibrating the images of a C-arm, including:

[0008] A phantom component;

[0009] An adjustment component, connected to the phantom component, and the adjustment component is configured to adjust the degrees of freedom of the phantom component to adjust the phantom component to the rotation axis of the C-arm;

[0010] A storage component. When the phantom component is in use, the phantom component is fixed to the storage component through the adjustment component. When the phantom component is not in use, the phantom component and the adjustment component are stored in the storage component.

[0011] In a feasible implementation manner, the storage component is configured with an installation part for connecting the adjustment component.

[0012] In a feasible implementation, a filling member is disposed in the storage assembly, and the filling member is configured with at least two receiving grooves for separately storing the phantom assembly and the adjustment assembly.

[0013] In a feasible implementation, the adjustment assembly includes:

[0014] An angle adjustment mechanism detachably connected to the mounting portion for adjusting at least the pitching angle of the phantom assembly;

[0015] A moving mechanism connected to the angle adjustment mechanism for adjusting at least the deflection angle and three-dimensional displacement of the phantom assembly.

[0016] In a feasible implementation, the angle adjustment mechanism includes a first support plate and a second support plate that are hinged to each other. The first support plate is fixed to the mounting portion, and the second support plate is connected to the moving mechanism;

[0017] The second support plate is provided with a first push rod for contacting the first support plate or the storage assembly to drive the phantom assembly to rotate.

[0018] In a feasible implementation, the phantom assembly includes a carrier and markers, and the markers are disposed on the carrier.

[0019] In a feasible implementation, the adjustment assembly includes a first assembly;

[0020] The phantom assembly includes a second assembly that is mounted on at least one end face of the carrier for detachably connecting to the first assembly.

[0021] In a feasible implementation, the first assembly includes a first clamping member;

[0022] The second assembly includes a fixing member and a second clamping member. The fixing member is fixed to the carrier, and the first clamping member is disposed on the fixing member to be adaptively clamped with the first clamping member.

[0023] In a feasible implementation, the first clamping member includes a claw / groove, and the second clamping member includes a groove / claw.

[0024] In a feasible implementation, the outer end faces of the first assembly and the second assembly are in contact with each other, and a fastener is disposed between the first assembly and the second assembly.

[0025] In a feasible implementation, the moving mechanism includes a lifting structure, a first platform, a second platform, and a third platform that are sequentially movably connected to drive the phantom component to move in at least three different directions;

[0026] The lifting structure is connected to the angle adjustment mechanism, and the first assembly is movably connected to the third platform.

[0027] In a feasible implementation, the top end of the lifting structure is fixedly connected to the first platform, and the bottom end of the lifting structure is fixed to the angle adjustment mechanism;

[0028] The first platform is provided with a second push rod, and the second push rod is used to contact the angle adjustment mechanism to drive the phantom component to move in a first direction;

[0029] A first guiding structure is provided between the second platform and the third platform;

[0030] The second platform is provided with a third push rod, and the third push rod is used to contact the third platform to drive the phantom component to move in a second direction;

[0031] A second guiding structure is provided between the third platform and the first assembly;

[0032] The third platform is provided with a fourth push rod, and the fourth push rod is used to contact the first assembly to drive the phantom component to move in a third direction.

[0033] In a feasible implementation, the movably connected first platform, second platform, and third platform drive the phantom component to deflect in at least one plane.

[0034] In a feasible implementation, the first platform is configured with at least one arc-shaped channel, and the second platform is provided with a guiding member adapted to be inserted into the arc-shaped channel;

[0035] The first platform is provided with a fifth push rod, and the fifth push rod is used to contact the second platform to drive the phantom component to rotate in the plane formed by the first direction and the second direction.

[0036] In a feasible implementation, the lifting structure, the first guiding structure, and the second guiding structure all include mutually adapted guide rails and guide grooves.

[0037] In a feasible implementation, a first elastic member is connected between the first platform and the second platform to enable the second platform to abut against the fifth push rod;

[0038] A second elastic member is connected between the second platform and the third platform, so that the third platform abuts against the third push rod.

[0039] A third elastic member is connected between the third platform and the first assembly, so that the first assembly abuts against the fourth push rod.

[0040] The image calibration device provided by the embodiment of the present application is provided with a storage component. When calibrating the C-arm machine, the storage component can provide support for the installation of the adjustment component and the phantom component, realize the quick and fixed installation of the end of the adjustment component away from the phantom component, and after the calibration is completed, the adjustment component and the phantom component can be stored in the storage component, realizing the portability and timeliness of transportation of the image calibration device. In addition, the setting of the adjustment component can quickly adjust the phantom component in place, thereby improving the image calibration efficiency of the C-arm machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will briefly introduce the drawings required for use in the description of the embodiments or related technologies. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0042] Figure 1 is a schematic application scenario diagram for calibrating a C-arm machine by the image calibration device provided by the embodiment of the present application;

[0043] Figure 2 is a schematic diagram of the image calibration device provided by the embodiment of the present application in a storage state;

[0044] Figure 3 is a schematic diagram of the image calibration device provided by the embodiment of the present application in a use state;

[0045] Figure 4 is a schematic structural diagram of the image calibration device provided by the embodiment of the present application from one perspective;

[0046] Figure 5 is Figure 4 a schematic enlarged view of the structures of the angle adjustment mechanism and the moving mechanism in;

[0047] Figure 6 is a schematic structural diagram of the image calibration device provided by the embodiment of the present application from another perspective;

[0048] Figure 7 is Figure 6 a schematic enlarged view of the structures including the angle adjustment mechanism and the moving mechanism in;

[0049] Figure 8 yes Figure 7 The enlarged schematic diagram of the structure includes a first assembly and a second assembly;

[0050] Figure 9 is one of the structural schematic diagrams of the phantom assembly provided according to an embodiment of the present application;

[0051] Figure 10 This is the second structural schematic diagram of the phantom assembly provided according to an embodiment of the present application;

[0052] Figure 11 yes Figure 6 The figure includes a schematic diagram of the disassembled structure of the first platform and the second platform.

[0053] Reference numerals:

[0054] 10. C-arm machine; 11. Rotation axis;

[0055] 210, phantom assembly; 21-1, axis; 211, carrier; 212, marker; 213, second assembly; 2131, fixing member; 2132, second clamping member; 2133, plunger;

[0056] 220, adjustment assembly; 221, angle adjustment mechanism; 2211, first support plate; 2212, second support plate; 222, moving mechanism; 2221, lifting structure; 2222, first platform; 2222-1, arc channel; 2223, second platform; 2223-1, guide member; 2224, third platform; 223, first assembly; 2231, first clamping member; 2232, extension arm; 2233, screw; 224, first push rod; 225, second push rod; 226, third push rod; 227, fourth push rod; 228, fifth push rod; 22-1, first elastic member; 22-2, second elastic member; 22-3, third elastic member;

[0057] 230, storage assembly; 231, mounting portion; 232, receiving slot;

[0058] The first direction is the Z direction; the second direction is the Y direction; the third direction is the X direction;

[0059] A-Formal wear; B-Reverse wear. DETAILED DESCRIPTION

[0060] The following is a further detailed description of the implementation of the present application in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but cannot be used to limit the scope of the present application.

[0061] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0062] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0063] In the embodiments of the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher level than the second feature in terms of horizontal height. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower level than the second feature in terms of horizontal height.

[0064] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0065] When calibrating the image of the C-arm machine, it is necessary to adjust the spatial position relationship between the calibration tooling (phantom) and the C-arm machine so that the cylindrical axis of the phantom coincides with the circumferential scanning rotation axis of the C-arm machine. Especially after the C-arm machine has been used for a long time and its parameters have changed, it is almost necessary to perform on-site calibration of the C-arm machine before each use. However, the current calibration tooling is not portable, resulting in low image calibration efficiency. In addition, there are problems such as inconvenience in adjusting the relative position between the phantom and the C-arm machine, and the installation and fixation of the calibration tooling are not convenient, further reducing the calibration efficiency.

[0066] Figure 1 FIG. is a schematic diagram of an application scenario for calibrating a C-arm machine using the image calibration device provided by an embodiment of the present application; Figure 2 FIG. is a schematic diagram of the image calibration device provided by an embodiment of the present application in a stored state; Figure 3 FIG. is a schematic diagram of the image calibration device provided by an embodiment of the present application in a use state.

[0067] Based on the above existing problems, as Figure 1 、 Figure 2 and Figure 3 shown, an embodiment of the present application provides an adjustable image calibration device, which is mainly used for calibrating the image of the C-arm machine 10. The calibration device may include a phantom assembly 210, an adjustment assembly 220, and a storage assembly 230.

[0068] The adjustment assembly 220 is connected to the phantom assembly 210, and the adjustment assembly 220 is configured to adjust the degrees of freedom of the phantom assembly 210 to adjust the phantom assembly 210 to the rotation axis 11 of the C-arm machine 10; when the phantom assembly 210 is in use, the phantom assembly 210 is fixed to the storage assembly 230 through the adjustment assembly 220, and when the phantom assembly 210 is not in use, the phantom assembly 210 and the adjustment assembly 220 are stored in the storage assembly 230.

[0069] It can be understood that the storage assembly 230 can store and transport the phantom assembly 210 and the adjustment assembly 220, and the storage assembly 230 is also used as a carrier for fixedly installing the adjustment assembly 220, which can achieve the purpose of quickly installing the adjustment assembly 220 and the phantom assembly 210 in place, and combined with the adjustment of the degrees of freedom of the phantom assembly 210 by the adjustment assembly 220, the phantom assembly 210 can be quickly scanned and calibrated, thereby improving the calibration efficiency.

[0070] Before calibrating the C-arm machine 10, the phantom assembly 210 and the adjustment assembly 220 placed in the storage assembly 230 can be taken out one by one. After detachably connecting the phantom assembly 210 and the adjustment assembly 220, the adjustment assembly 220 can be fixed to the storage assembly 230. Of course, it is also possible to fix the adjustment assembly 220 to the storage assembly 230 first and then connect the phantom assembly 210 to the adjustment assembly 220. The specific connection sequence is not limited here. In addition, the storage assembly 230 can be arranged close to the C-arm machine 10. Of course, the storage assembly 230 can be placed on the operating table as a support, or on other structures that can be used to stably place the storage assembly 230, such as Figure 1 and Figure 3 shown

[0071] After firmly installing the above-mentioned phantom assembly 210 and adjustment assembly 220, and properly placing the storage assembly 230, the degree of freedom of the phantom assembly 210 is adjusted by manually controlling the adjustment assembly 220 until the phantom assembly 210 is adjusted to coincide with the rotation axis 11 (ring scan rotation axis) of the C-arm machine 10. In other words, if the phantom assembly 210 is cylindrical, it is adjusted by the adjustment assembly 220 so that the axis 21-1 of the phantom assembly 210 coincides with the rotation axis 11 of the C-arm machine 10. Of course, the structure of the phantom assembly 210 can also be cylindrical, and the specific structure is not limited here

[0072] The storage assembly 230 in this example can also be understood as a storage box. After calibration is completed, the phantom assembly 210 is detached from the adjustment assembly 220, the adjustment assembly 220 is detached from the storage assembly 230, and the two are separately placed in the storage assembly 230, as Figure 2 shown, to avoid mutual collision during transportation and damage to the phantom assembly 210

[0073] In the embodiment of the present application, the storage assembly 230 is provided. When calibrating the C-arm machine 10, the storage assembly 230 can provide support for the installation of the adjustment assembly 220 and the phantom assembly 210, realizing the quick and fixed installation of the end of the adjustment assembly 220 away from the phantom assembly 210. After calibration is completed, the adjustment assembly 220 and the phantom assembly 210 can be stored in the storage assembly 230, realizing the portability and timely transfer of the image calibration device. In addition, the setting of the adjustment assembly 220 can quickly adjust the phantom assembly 210 in place, thereby improving the image calibration efficiency of the C-arm machine 10

[0074] Figure 4 is a schematic structural diagram of an image calibration device from a perspective provided by an embodiment of the present application Figure 5 is Figure 4 a schematic enlarged view of the structures of the angle adjustment mechanism and the moving mechanism in

[0075] To facilitate fixing the adjustment component 220 to the storage component 230, as Figure 4 and Figure 5 shown, in some embodiments, the storage component 230 is configured with a mounting portion 231 for connecting the adjustment component 220.

[0076] Specifically, the mounting portion 231 can be a mounting plate formed on the side wall of the storage component 230. The end of the adjustment component 220 can be provided with a U-shaped plate adapted to the thickness of the mounting plate. The U-shaped plate is snap-connected to the mounting plate and firmly connected to the mounting plate through bolts or the like, so as to achieve a firm connection with the storage component 230. Of course, the end of the adjustment component 220 can also be set as a clamping member to clamp the adjustment component 220 on the mounting plate.

[0077] In addition, the mounting portion 231 can also be a clamping groove formed in the storage component 230. The end of the adjustment component 220 can be provided with a plug board adapted to be inserted into the clamping groove. To increase the stability of the adjustment component 220 arranged in the storage component 230, bolts or the like can pass through the plug board and the clamping groove to achieve a firm connection between the adjustment component 220 and the storage component 230.

[0078] In addition, to ensure the stability of the storage component 230 when the adjustment component 220 is installed on the storage component 230, the weight of the storage component 230 can be appropriately increased, or the setting position of the mounting portion 231 can be adjusted, so that after the phantom component 210 is installed on the storage component 230 through the adjustment component 220, even if the phantom component 210 is adjusted in any degree of freedom, the center of gravity stability of the storage component 230 can still be ensured, and the situation of the storage component 230 tipping over or sliding during the adjustment process can be avoided.

[0079] To prevent the phantom component 210 and the adjustment component 220 stored in the storage component 230 from colliding and rubbing, as Figure 3 shown, in some embodiments, a filling member is provided in the storage component 230. The filling member is configured with at least two receiving grooves 232 to separately store the phantom component 210 and the adjustment component 220.

[0080] Specifically, the filling member can be a filling sponge. The filling sponge can be designed to have an outer shape adapted to the storage component 230, but its interior is configured with at least two receiving grooves 232 for receiving the phantom component 210, the adjustment component 220 or some other components. The shape of the receiving groove 232 can be adapted to the shapes of the phantom component 210 and the adjustment component 220 to fix the placement positions of the phantom component 210 and the adjustment component 220, avoid collisions and frictions between the two and with the side wall of the receiving component, and improve the service life of the phantom component 210. Of course, the above-mentioned filling member can also be foam or other filling materials with similar functions, which will not be listed one by one here.

[0081] The above-mentioned storage component 230 can be configured in the shape of a square storage box, and is provided with an openable and closable lid. The filling member can also be provided inside the lid. The body model component 210 and the adjustment component 220 are locked by the lid to achieve the portability of the image calibration device.

[0082] Figure 6 It is a schematic structural diagram of the image calibration device from another perspective provided by the embodiments of the present application; Figure 7 is Figure 6 a schematic enlarged view of the structure including the angle adjustment mechanism and the moving mechanism in Figure 8 is Figure 7 a schematic enlarged view of the structure including the first assembly and the second assembly in

[0083] In this example, the adjustment component 220 can be quickly installed on the storage component 230, so as to adjust the degrees of freedom of the body model component 210 connected thereto. As Figure 6 , Figure 7 and Figure 8 shown, in some embodiments, the adjustment component 220 may include an angle adjustment mechanism 221 and a moving mechanism 222. The angle adjustment mechanism 221 is detachably connected to the installation part 231 to adjust at least the pitching angle of the body model component 210; the moving mechanism 222 is connected to the angle adjustment mechanism 221 to adjust at least the deflection angle and three-dimensional displacement of the body model component 210.

[0084] Specifically, for the convenience of describing the structure of the adjustment component 220, when the adjustment component 220 is in use, the structure of the adjustment component 220 will be introduced from the side of the storage component 230 to the side of the body model component 210. Part of the angle adjustment mechanism 221 is fixedly connected to the storage component 230, and the other part is connected to the moving mechanism 222. The angle adjustment mechanism 221 can adjust the opening and closing angle between the moving mechanism 222 and the storage component 230. In other words, by adjusting the opening and closing angle, the angle of the axis of the body model component 210 relative to the storage component 230 can be adjusted. The angle adjustment mechanism 221 can be, for example, a structure similar to a hinge structure. The specific structure is described below.

[0085] The moving mechanism 222 can drive the body model component 210 to move and rotate in multiple directions to ensure the adjustment of multiple degrees of freedom of the body model component 210. For example, the moving mechanism 222 may include multiple sets of ball screw structures stacked in sequence, and the screws in the multiple ball screws are arranged perpendicular to each other, so that the nut moves linearly through the control of the corresponding motor, thereby realizing the movement of the body model component 210 in different directions. Of course, the moving mechanism 222 is not limited to the above structure, and can also be set as a manually driven structure. See the following content for details.

[0086] For the convenience of describing the adjustment directions of the angle adjustment mechanism 221 and the moving mechanism 222 in the adjustment assembly 220 to the phantom assembly 210, as Figure 6 and Figure 7 shown, a three-dimensional coordinate system is constructed for the imaging calibration device. The first direction is the Z direction, the second direction is the Y direction, and the third direction is the X direction.

[0087] As Figure 5 shown, in some embodiments, the angle adjustment mechanism 221 includes a first support plate 2211 and a second support plate 2212 that are hinged to each other. The first support plate 2211 is fixed to the installation part 231, and the second support plate 2212 is connected to the moving mechanism 222; a first push rod 224 is arranged on the second support plate 2212, and the first push rod 224 is used to contact the first support plate 2211 or the storage assembly 230 to drive the phantom assembly 210 to rotate.

[0088] Specifically, the hinged manner of the first support plate 2211 and the second support plate 2212 is similar to a hinge structure. The first support plate 2211 can be designed as the above U-shaped plate or a clamping jaw to be connected to the installation part 231 (installation plate), and through the fastening of bolts, the first support plate 2211 is fastened to the storage assembly 230. The first push rod 224 can be threadedly arranged on the second support plate 2212, and the end of the first push rod 224 contacts the first support plate 2211 and the second support plate 2212. That is, by rotating the first push rod 224, the included angle between the first support plate 2211 and the second support plate 2212 can be changed, and further the moving mechanism 222 (phantom assembly 210) connected thereto can rotate along the Z-Y plane, which is beneficial to adjusting the pitch angle of the phantom assembly 210 relative to the C-arm machine 10.

[0089] Figure 9 is one of the structural schematic diagrams of the phantom assembly provided by the embodiment of the present application; Figure 10 is the second structural schematic diagram of the phantom assembly provided by the embodiment of the present application.

[0090] Similar to the quick disassembly of the above adjustment assembly 220 and the storage assembly 230, it is also necessary to achieve the quick disassembly between the adjustment assembly 220 and the phantom assembly 210, as well as the stability during connection. As Figure 9 and Figure 10 shown, in some embodiments, the phantom assembly 210 includes a carrier 211 and markers 212, and the markers 212 are arranged on the carrier 211.

[0091] It can be understood that the structure of the carrier 211 can be a cylinder to facilitate the calibration of each marker 212 in a three-dimensional shape, making the imaging situation more in line with the actual situation. Of course, in order to prevent the phantom assembly 210 from tipping over due to its excessive weight after being installed in the storage assembly 230, in this example, the carrier 211 can also be designed as a hollow column, that is, a cylindrical structure, to reduce the weight of the carrier 211. The design of the cylindrical carrier 211 also facilitates the installation of the following second assembly 213.

[0092] A plurality of markers 212 are evenly installed around the circumference of the carrier 211. The markers wound around one week can be set as a group. There can be one group, two groups or multiple groups of markers 212 on the carrier 211. In this example, two groups of markers 212 are set as an example for description. During calibration, it is possible to observe whether the axis of symmetry of the two groups of markers 212 in the imaging is located on the central axis of the imaging, and adjust the degrees of freedom of the carrier 211 based on this standard.

[0093] In some embodiments, the adjustment assembly 220 includes a first assembly 223; the phantom assembly 210 includes a second assembly 213, and the second assembly 213 is installed on at least one end face of the carrier 211 for detachably connecting with the first assembly 223.

[0094] Specifically, the first assembly 223 is mainly used for detachably connecting with the phantom assembly 210 to achieve the quick assembly or disassembly of the adjustment assembly 220 and the phantom assembly 210. The first assembly 223 can also be movably connected with the moving mechanism 222 to achieve the purpose of adjusting the multiple degrees of freedom of the phantom assembly 210.

[0095] To prevent the second assembly 213 from affecting the imaging of the marker 212, the second assembly 213 can be fixed to one end face of the carrier 211 by means of bolt connection, gluing, welding, etc. As Figure 6 shown, and the second assembly 213 is installed at different positions on the end face of the carrier 211, different calibration effects can be achieved, including: if the carrier 211 is a cylinder, the second assembly 213 is arranged at the central position of the end face of the cylinder. In this setting, after the axis 21-1 of the carrier 211 is aligned with the rotation axis 11 of the C-arm machine 10 through the adjustment assembly 220, the imaging form on the carrier 211 is single; if the carrier 211 is cylindrical, the second assembly 213 is arranged at the edge of the cylindrical carrier 211. In this setting, the correct installation and reverse installation of the carrier 211 can be achieved ( Figure 6In this case, A is the right-side installation and B is the left-side installation), that is, the relative position between the second assembly 213 and the carrier 211 is changed; when the axis of the carrier 211 is in the horizontal direction, the connection at the uppermost part between the second assembly 213 and the carrier 211 is the right-side installation, and the connection at the lowermost part between the second assembly 213 and the carrier 211 is the left-side installation, and vice versa. The settings of the right-side installation and the left-side installation can simulate and adapt to the patient's lying or prone position on the operating table, and the different distances between the spine and the bed, that is, the distance between the axis 21-1 of the carrier 211 and the bottom of the storage assembly 230.

[0096] As Figure 8 shown, in some embodiments, the first assembly 223 includes a first clamping component 2231; the second assembly 213 includes a fixing component 2131 and a second clamping component 2132. The fixing component 2131 is fixed to the carrier 211, and the first clamping component 2231 is arranged on the fixing component 2131 to be adaptively clamped with the first clamping component 2231.

[0097] It can be understood that through the adaptive clamping between the first clamping component 2231 and the second clamping component 2132, the rapid connection of the assembly and the adjustment component 220 can be realized. Since the carrier 211 has a certain weight, if the second clamping component 2132 is clamped above the first clamping component 2231, the stable connection between the two can be realized by the weight of the carrier 211.

[0098] The fixing component 2131 and the second clamping component 2132 can be tightly connected by bolts, adhesives, etc., and of course, they can also be integrally formed, and no setting is made here.

[0099] To prevent the second clamping component 2132 from detaching from the first clamping component 2231, in some embodiments, the first clamping component 2231 includes a claw / groove, and the second clamping component 2132 includes a groove / claw.

[0100] Specifically, taking the first clamping component 2231 as the groove and the second clamping component 2132 as the claw as an example for illustration, as Figure 9 and Figure 10 shown, the shape of the claw can be T-shaped, Y-shaped, V-shaped, etc., and the shape of the groove is adapted to the shape of the claw. This setting can firmly clamp the claw in the groove and can effectively prevent the claw from disengaging from the groove.

[0101] To further enhance the connection firmness between the first assembly 223 and the second assembly 213, in some embodiments, the outer end faces of the first assembly 223 and the second assembly 213 are in contact with each other, and a fastener is provided between the first assembly 223 and the second assembly 213.

[0102] Specifically, after the first clamping component 2231 is clamped with the second clamping component 2132, the outer end surface of the first assembly 223 is made to be in close contact with the outer end surface of the second assembly 213. Installation holes can be reserved in the first assembly 223 and the second assembly 213, and the two can be firmly connected through the plunger 2133, so as to realize the firm connection between the body mold assembly 210 and the adjustment assembly 220, and it is convenient for disassembly.

[0103] Of course, the first assembly 223 and the second assembly 213 can also be reinforced through other structures. For example, an extension arm 2232 is provided on the first assembly 223. As Figure 8 shown, the extension arm 2232 can extend to the second assembly 213, and the extension arm 2232 is penetrated with a threaded hole into which a screw 2233 can be screwed. In addition, a threaded hole is also correspondingly formed on the second assembly 213, so as to pass the screw 2233 through the threaded hole, thereby realizing the firm connection between the first assembly 223 and the second assembly 213. Different from the above-mentioned method processed by the plunger 2133, the extension arm 2232 combined with the screw 2233 reinforces the first assembly 223 and the second assembly 213 from a direction different from that of the plunger 2133, and thus realizes the double reinforcement of the first assembly 223 and the second assembly 213. Of course, the above-mentioned extension arm 2232 can also be provided on the second assembly 213, and details are not described herein again.

[0104] As Figure 7 shown, in some embodiments, the moving mechanism 222 includes a lifting structure 2221, a first platform 2222, a second platform 2223, and a third platform 2224 that are sequentially movably connected, so as to drive the body mold assembly 210 to move along at least three different directions; the lifting structure 2221 is connected to the angle adjustment mechanism 221, and the first assembly 223 is movably connected to the third platform 2224.

[0105] Specifically, to realize the adjustment of multiple degrees of freedom of the body mold assembly 210, the lifting structure 2221 is movably connected to the first platform 2222, the first platform 2222 is movably connected to the second platform 2223, the second platform 2223 is movably connected to the third platform 2224, and the third platform 2224 is movably connected to the first assembly 223. Moreover, the relative movement directions occurring between the two movably connected parts are all different, and at least include movement forms such as along the X direction, Y direction, Z direction, and rotation in the X-Y plane. This kind of setting can accurately adjust the spatial position of the body mold assembly 210 relative to the rotation axis 11 of the C-arm machine 10, and thus improve the calibration accuracy.

[0106] In some embodiments, the top end of the lifting structure 2221 is fixedly connected to the first platform 2222, and the bottom end of the lifting structure 2221 is fixed to the angle adjustment mechanism 221; the first platform 2222 is provided with a second push rod 225, and the second push rod 225 is used to contact the angle adjustment mechanism 221 to drive the phantom assembly 210 to move in the first direction.

[0107] Specifically, the lifting structure 2221 includes a lifting rod, a slider, and a guide rail. The top end of the lifting rod is fixedly connected to the first platform 2222, the slider is fixedly connected to the bottom end of the lifting rod, the guide rail is arranged outside the second support plate 2212 of the angle adjustment mechanism 221, and the slider is clamped on the guide rail and can drive the lifting rod to reciprocate in the Z direction. The way to drive the first platform 2222 to move in the Z direction can be to thread the second push rod 225 through the first platform 2222 in the Z direction, that is, to make the axial direction of the second push rod 225 parallel to the Z direction, and the end of the second push rod 225 contacts the angle adjustment mechanism 221. By rotating the second push rod 225, the movement of the lifting rod in the Z direction can be controlled.

[0108] In this example, the lifting structure 2221 usually adjusts the height of the first platform 2222 in the vertical direction. When rising, the first platform 2222 can be raised by rotating the second push rod 225. If it is to descend, the second push rod 225 can be rotated in the reverse direction so that there is a distance between the second push rod 225 and the angle adjustment mechanism 221, and the first platform 2222 descends under its own gravity so that the second push rod 225 remains in contact with the angle adjustment mechanism 221.

[0109] In one example, a first guiding structure is provided between the second platform 2223 and the third platform 2224; the second platform 2223 is provided with a third push rod 226, and the third push rod 226 is used to contact the third platform 2224 to drive the phantom assembly 210 to move in the second direction.

[0110] Specifically, similar to the above-mentioned lifting structure 2221, in one example, the first guiding structure includes a mutually adapted guide rail and a guide groove. It can be understood that a mutually adapted guide rail and a guide groove are provided between the second platform 2223 and the third platform 2224, and the arrangement of the guide rail and the guide groove can limit the relative movement of the second platform 2223 and the third platform 2224 to the second direction, that is, the Y direction. The way to drive the third platform 2224 to move relative to the second platform 2223 in the Y direction can be to thread the third push rod 226 through the second platform 2223 in the Y direction, that is, to make the axial direction of the third push rod 226 parallel to the Y direction, and the end of the third push rod 226 contacts the side of the third platform 2224, so as to rotate the third push rod 226 by an external force, and the end of the third push rod 226 drives the third platform 2224 to move in the Y direction.

[0111] In this example, the end of the third push rod 226 can be rotatably connected to the third platform 2224, so as to achieve the purpose that the third platform 2224 can be driven to move along the Y direction in a timely manner regardless of whether the third push rod 226 rotates forward / backward.

[0112] In addition to the above method, in one example, a second elastic member 22-2 is connected between the second platform 2223 and the third platform 2224, so that the third platform 2224 abuts against the third push rod 226.

[0113] Specifically, the second elastic member 22-2, such as a spring, can generate an elastic force when the second platform 2223 and the third platform 2224 move relative to each other, so that the third platform 2224 can continuously abut against the third push rod 226. Furthermore, by rotating the third push rod 226 forward / backward, the purpose of driving the third platform 2224 to reciprocate along the Y direction can be achieved.

[0114] In one example, a second guiding structure is provided between the third platform 2224 and the first assembly 223; the third platform 2224 is provided with a fourth push rod 227, and the fourth push rod 227 is used to contact the first assembly 223 to drive the body mold assembly 210 to move in the third direction.

[0115] Specifically, the movement between the third platform 2224 and the first assembly 223 is the same as the movement mode between the second platform 2223 and the third platform 2224. In one example, the second guiding structure includes a mutually adapted guide rail and a guide groove. It can be understood that a mutually adapted and clamped guide rail and guide groove are provided between the third platform 2224 and the first assembly 223, so that the third platform 2224 and the first assembly 223 are limited in the third direction, that is, the X direction. Then, the fourth push rod 227 is threaded through the third platform 2224 along the X direction, that is, the axial direction of the fourth push rod 227 is parallel to the X direction, and the end of the fourth push rod 227 contacts the side of the first assembly 223, so as to drive the first assembly 223 to move along the X direction by rotating the fourth push rod 227 with an external force.

[0116] Similarly, the end of the fourth push rod 227 can also be movably connected to the first assembly 223. Of course, the fourth push rod 227 can also be independently arranged with the first assembly 223. In one example, a third elastic member 22-3 is connected between the third platform 2224 and the first assembly 223, so that the first assembly 223 abuts against the fourth push rod 227. Specifically, the third elastic member 22-3, such as a spring, can generate an elastic force when the third platform 2224 and the first assembly 223 move relative to each other, so that the first assembly 223 can continuously abut against the fourth push rod 227. Furthermore, by rotating the fourth push rod 227 forward / backward, the purpose of driving the first assembly 223 to reciprocate along the X direction can be achieved.

[0117] In one embodiment, the first platform 2222, the second platform 2223, and the third platform 2224 are movably connected to drive the phantom assembly 210 to deflect along at least one plane.

[0118] It can be understood that an adapted arc-shaped channel and a guide member can be provided between the movably connected first platform 2222 and the second platform 2223, and the guide member is adapted to be inserted into the arc-shaped channel to achieve the purpose that the first platform 2222 and the second platform 2223 can rotate relative to each other, and further drive the phantom assembly 210 to rotate along a plane different from the Z-Y plane. Of course, an adapted arc-shaped channel and a guide member can also be provided between the movably connected second platform 2223 and the third platform 2224, and the guide member is adapted to be inserted into the arc-shaped channel to achieve the purpose that the second platform 2223 and the third platform 2224 can rotate relative to each other, and further drive the phantom assembly 210 to rotate along a plane different from the Z-Y plane.

[0119] Therefore, in addition to the above translation method, Figure 11 is Figure 6 It includes a schematic diagram of the disassembly structure of the first platform and the second platform, as Figure 11 shown. In some embodiments, the first platform 2222 is configured with at least one arc-shaped channel 2222-1, and the second platform 2223 is provided with a guide member 2223-1 adapted to be inserted into the arc-shaped channel 2222-1; the first platform 2222 is provided with a fifth push rod 228, and the fifth push rod 228 is used to contact the second platform 2223 to drive the phantom assembly 210 to rotate along the plane formed by the first direction and the second direction.

[0120] Specifically, the first platform 2222 can be understood as a flat plate, and at least one arc-shaped channel 2222-1 penetrating the first platform 2222 is configured on the large surface of the flat plate. In this example, two parallel arc-shaped channels 2222-1 are taken as an example. A guide rod capable of extending into the arc-shaped channel 2222-1 is provided on the side of the second platform 2223 facing the first platform 2222, and the guide rod can drive the second platform 2223 to rotate along the arc-shaped channel 2222-1. To prevent the second platform 2223 from disengaging from the first platform 2222 during the adjustment process, a limit bump can be provided at the exposed end of the guide rod after the guide rod is inserted into the guide channel. For example, a nut can be screwed onto the end of the guide rod to ensure the connection stability between the first platform 2222 and the second platform 2223.

[0121] The way to drive the relative rotation of the first platform 2222 and the second platform 2223 can be that a fifth push rod 228 is threaded through the first platform 2222, and the end of the fifth push rod 228 is in contact with the side of the second platform 2223. By externally rotating the fifth push rod 228, the second platform 2223 can be driven to rotate along the X-Y plane. That is, the body mold assembly 210 can be swing-adjusted relative to the receiving assembly 230. Combining the above-mentioned angle adjustment mechanism 221, the up-and-down and left-and-right rotation adjustment of the body mold assembly 210 can be realized, further improving the adjustment accuracy of the body mold assembly 210.

[0122] It should be noted that to avoid the situation where the friction between the mutually contacting first platform 2222 and second platform 2223 is too large and the fifth push rod 228 is difficult to push, balls or rollers can be provided between the first platform 2222 and the second platform 2223 to reduce the friction when the two move relative to each other and ensure the driving smoothness of the fifth push rod 228.

[0123] In addition, when the fifth push rod 228 is not connected to the second platform 2223, in order to enable the second platform 2223 to reciprocate relative to the first platform 2222, in one example, a first elastic member 22-1 is connected between the first platform 2222 and the second platform 2223 to make the second platform 2223 abut against the fifth push rod 228. Specifically, the first elastic member 22-1, that is, a spring, can be connected to the bolt of the first platform 2222 and the guide member 2223-1 of the second platform 2223, but there is no limitation. The first elastic member 22-1 can generate an elastic force when the first platform 2222 and the second platform 2223 rotate relative to each other, so that the second platform 2223 can continuously abut against the fifth push rod 228. Furthermore, by rotating the fifth push rod 228 forward / backward, the purpose of driving the second platform 2223 to rotate reciprocally along the X-Y plane can be achieved.

[0124] Through the setting of the above-mentioned first elastic member 22-1, second elastic member 22-2 and third elastic member 22-3, the effective displacement between the two corresponding connected components can also be ensured, that is, preventing the corresponding guide rails and guide grooves from sliding out of the actual adjustment range, and further ensuring the stability during calibration.

[0125] It should be noted that the first platform 2222, the second platform 2223, the third platform 2224 and other structures can be designed with hollow parts to minimize the weight of the adjustment assembly 220 and ensure the stability of the installation of the adjustment assembly 220 and the body mold assembly 210 on the receiving assembly 230.

[0126] Finally, it should be noted that the above embodiments are only used to illustrate the present application, rather than limiting the present application. Although the present application has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present application do not depart from the spirit and scope of the technical solutions of the present application, and should all be covered within the scope of the claims of the present application.

Claims

1. An image calibration device, characterized in that: Used for image calibration of C-arm machine, including: Phantom components; an adjusting component connected to the phantom component, wherein the adjusting component is configured to adjust the degree of freedom of the phantom component so as to adjust the phantom component to the rotation axis of the C-arm machine; The storage assembly is fixed to the storage assembly through the adjustment assembly when the phantom assembly is in use, and the phantom assembly and the adjustment assembly are stored in the storage assembly when the phantom assembly is not in use.

2. The image calibration device according to claim 1, characterized in that: The storage assembly is configured with a mounting portion, and the mounting portion is used to connect the adjustment assembly.

3. The image calibration device according to claim 1, characterized in that: A filling piece is arranged in the storage component, and the filling piece is configured with at least two accommodating grooves to separate and store the phantom component and the adjustment component.

4. The image calibration device according to claim 2, characterized in that: The adjustment component comprises: An angle adjustment mechanism, detachably connected to the mounting portion, for adjusting at least the pitch angle of the phantom assembly; The moving mechanism is connected to the angle adjustment mechanism and at least adjusts the deflection angle and three-dimensional displacement of the phantom assembly.

5. The image calibration device according to claim 4, characterized in that: The angle adjustment mechanism comprises a first support plate and a second support plate which are hinged to each other, the first support plate is fixed to the mounting portion, and the second support plate is connected to the moving mechanism; The second support plate is provided with a first push rod, and the first push rod is used to contact with the first support plate or the storage assembly to drive the phantom assembly to rotate.

6. The image calibration device according to claim 4 or 5, characterized in that: The phantom assembly includes a carrier and a marker, and the marker is arranged on the carrier.

7. The image calibration device according to claim 6, characterized in that: The adjustment assembly includes a first assembly; The phantom assembly includes a second assembly body, which is mounted on at least one end surface of the carrier body and is used for being detachably connected to the first assembly body.

8. The image calibration device according to claim 7, characterized in that: The first assembly includes a first clamping component; The second assembly body includes a fixing member and a second clamping member. The fixing member is fixed to the carrier. The first clamping member is arranged on the fixing member to be adapted and clamped with the first clamping member.

9. The image calibration device according to claim 8, characterized in that: The first clamping component includes a clamping claw / a clamping slot, and the second clamping component includes a clamping slot / a clamping claw.

10. The image calibration device according to claim 8, characterized in that: The outer end surface of the first assembly body and the outer end surface of the second assembly body are in conflict with each other, and a fastener is arranged between the first assembly body and the second assembly body.

11. The image calibration device according to claim 7, characterized in that: The moving mechanism comprises a lifting structure, a first platform, a second platform and a third platform which are movably connected in sequence to drive the phantom assembly to move in at least three different directions; The lifting structure is connected to the angle adjustment mechanism, and the first assembly is movably connected to the third platform.

12. The image calibration device according to claim 11, characterized in that: The top end of the lifting structure is fixedly connected to the first platform, and the bottom end of the lifting structure is fixed to the angle adjustment mechanism; The first platform is provided with a second push rod, and the second push rod is used to contact with the angle adjustment mechanism to drive the phantom assembly to move along the first direction; A first guide structure is provided between the second platform and the third platform; The second platform is provided with a third push rod, and the third push rod is used to contact with the third platform to drive the phantom assembly to move along the second direction; A second guide structure is provided between the third platform and the first assembly; The third platform is provided with a fourth push rod, and the fourth push rod is used to contact with the first assembly body to drive the phantom component to move along the third direction.

13. The image calibration device according to claim 11, characterized in that: The first platform, the second platform and the third platform are movably connected to drive the phantom assembly to deflect along at least one plane.

14. The image calibration device according to claim 13, characterized in that: The first platform is constructed with at least one arc-shaped channel, and the second platform is provided with a guide piece adapted to be plugged into the arc-shaped channel; The first platform is provided with a fifth push rod, and the fifth push rod is used to contact with the second platform to drive the phantom assembly to rotate along a plane formed by the first direction and the second direction.

15. The image calibration device according to claim 12, characterized in that: The lifting structure, the first guide structure and the second guide structure all include guide rails and guide grooves that match each other.

16. The image calibration device according to claim 15, characterized in that: A first elastic member is connected between the first platform and the second platform so that the second platform abuts against a fifth push rod on the first platform; A second elastic member is connected between the second platform and the third platform so that the third platform abuts against the third push rod; A third elastic member is connected between the third platform and the first assembly body so that the first assembly body abuts against the fourth push rod.

Images