C-arm with variable SID configuration

Abstract

The utility model discloses a C -shaped arm with SID variable structure, including imaging main part, the upper fixed of imaging main part is equipped with C arm support, be equipped with C arm on C arm support, one end of C arm is equipped with combination machine head fixedly, the one end fixed of C arm away from combination machine head is equipped with SID variable structure, be equipped with flat -panel detector on SID variable structure fixedly, can drive flat -panel detector to go up and down through SID variable structure, can change SID distance, more suitable for clinical application, and mechanical structure is simple, and the reliability is high, and it is convenient for maintenance, can replace the flat -panel of different size fast.

Description

Technical Field

[0001] This utility model relates to the field of imaging equipment technology, specifically to a C-shaped arm with a variable SID structure. Background Technology

[0002] When performing imaging examinations with C-arms / G-arms, it is necessary to select appropriate source-image distance and source-skin distance. The source-image distance (SID) refers to the distance between the X-ray source and the image receiving surface. The SID distance of C-arms / G-arms is changed by raising and lowering the flat panel detector. Currently, the lifting devices of C-arms / G-arm flat panel detectors on the market are wide, thick, large in overall volume, and complex in structure. This is not conducive to the spatial layout of C-arms / G-arms, cannot adapt to flat panels of different sizes at the same time, and also increases the difficulty of component maintenance and replacement, which does not meet the actual use requirements. Utility Model Content

[0003] The purpose of this invention is to provide a C-arm with a variable SID structure to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a C-arm with a variable SID structure, comprising an imaging body, a C-arm support fixedly disposed above the imaging body, a C-arm disposed on the C-arm support, a combined camera head fixedly disposed at one end of the C-arm, a variable SID structure fixedly disposed at the end of the C-arm away from the combined camera head, and a flat panel detector fixedly disposed on the variable SID structure.

[0005] Preferably, the SID variable structure includes an upper fixed plate, on the upper fixed plate surface of which a motor is fixedly mounted. The output end of the motor is fixedly connected to a first gear, which meshes with a second gear. A lead screw is fixedly connected to the center of the second gear. A connecting member is provided on the lead screw. Both ends of the connecting member are rotatably connected to a right connecting rod. A lower fixed plate is provided at the end of the right connecting rod away from the connecting member. A stabilizing groove is fixedly mounted on the lower fixed plate. A moving rod is provided in the stabilizing groove. Both ends of the moving rod are rotatably connected to a left connecting rod. The end of the left connecting rod away from the moving rod is rotatably connected to the upper fixed plate.

[0006] Preferably, the right connecting rod and the left connecting rod are connected at their center positions by a pin, and the right connecting rod and the left connecting rod form an X-link structure.

[0007] Preferably, a lead screw base is fixedly provided on the lower surface of the upper fixing plate, and the lead screw is rotatably connected to the lead screw base.

[0008] Preferably, a connecting bracket is fixedly provided on the upper fixing plate, and one end of the connecting bracket is fixedly connected to the C-arm.

[0009] Compared with the prior art, the advantages of this utility model are: the variable SID structure can drive the flat panel detector to rise and fall, and the SID distance can be changed, making it more suitable for clinical applications. The mechanical structure is simple, highly reliable, easy to maintain, and can quickly replace flat panels of different sizes. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the SID variable structure of this utility model;

[0012] Figure 3 This is a schematic diagram showing the position of the lead screw in this utility model;

[0013] Figure 4 This is a side view of the SID variable structure of this utility model.

[0014] In the diagram: 1. Imaging subject; 2. C-arm support; 3. C-arm; 4. Flat panel detector; 5. SID variable structure; 51. Upper fixing plate; 52. Motor; 53. Gear 1; 54. Gear 2; 55. Lead screw; 56. Connector; 57. Right connecting rod; 58. Lower fixing plate; 59. Stabilizing groove; 510. Moving rod; 511. Left connecting rod; 6. Combined camera head. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0016] Please refer to 1-4. One embodiment of this utility model is provided: a C-arm with a variable SID structure, including an imaging body 1, a C-arm support 2 fixedly mounted above the imaging body 1, a C-arm 3 mounted on the C-arm support 2, a combined camera head 6 fixedly mounted at one end of the C-arm 3, a variable SID structure 5 fixedly mounted at the end of the C-arm 3 away from the combined camera head 6, and a flat panel detector 4 fixedly mounted on the variable SID structure 5. The flat panel detector 4 can be raised and lowered by the variable SID structure 5, changing the distance between the flat panel detector 4 and the combined camera head 6, which facilitates the selection of a reasonable source-image distance and source-skin distance.

[0017] The SID variable structure 5 includes an upper fixed plate 51. A motor 52 is fixedly mounted on the upper surface of the upper fixed plate 51. The motor 52 is located above the upper fixed plate 51 and can be hidden in the C-arm, occupying little space. The output end of the motor 52 is fixedly connected to a gear 1 53. Gear 1 53 meshes with a gear 2 54. A lead screw 55 is fixedly connected to the center of gear 2 54. A connecting piece 56 is provided on the lead screw 55. Both ends of the connecting piece 56 are rotatably connected to a right connecting rod 57. A lower fixed plate 58 is provided at the end of the right connecting rod 57 away from the connecting piece 56. A stabilizing groove 59 is fixedly mounted on the lower fixed plate 58. A moving rod 510 is provided in the stabilizing groove 59. Both ends of the moving rod 510 are rotatably connected to a left connecting rod. 511, the end of the left connecting rod 511 furthest from the moving rod 510 is rotatably connected to the fixed plate 51. As the motor 52 starts, it drives gear 1 53 to rotate, causing gear 2 54 to rotate, which in turn drives the lead screw 55 to rotate. At this time, the connecting piece 56 on the lead screw 55 moves back and forth as the lead screw 55 rotates forward and backward. As the connecting piece 56 moves, it drives the right connecting rod 57 to move, causing the right connecting rod 57 to drive the lower fixed plate 58 to rise or fall. At this time, due to the gravity of the lower fixed plate 58, the left connecting rod 511 moves at the end of the moving rod 510 in the stabilizing groove 59, thus supporting the lower fixed plate 58.

[0018] The right connecting rod 57 and the left connecting rod 511 are connected at their center by a pin, forming an X-link structure. This facilitates the mutual rotation between the right connecting rod 57 and the left connecting rod 511, improving overall stability. This device can be made into multi-stage links according to actual distance requirements. A lead screw base is fixedly provided on the lower surface of the upper fixed plate 51. The lead screw 55 is rotatably connected to the lead screw base, facilitating the rotation of the lead screw 55 and allowing the connecting piece 56 to move. A connecting bracket is fixedly provided on the upper fixed plate 51. One end of the connecting bracket is fixedly connected to the C-arm 3, forming a fixed connection with the C-arm 3.

[0019] Working principle: When in use, the motor 52 starts to rotate, and gear 1 53 meshes with gear 2 54. The rotation of the gears drives the lead screw 55 to rotate, and the X-link structure moves back and forth. The opening and closing of the X-link structure realizes the rise or fall of the lower fixed plate 58, which drives the flat plate detector 4 to rise and fall.

Claims

1. A C-arm with a variable SID structure, comprising an imaging body (1), characterized in that: A C-arm bracket (2) is fixedly provided above the imaging body (1). A C-arm (3) is provided on the C-arm bracket (2). A combined camera head (6) is fixedly provided at one end of the C-arm (3). A SID variable structure (5) is fixedly provided at the end of the C-arm (3) away from the combined camera head (6). A flat panel detector (4) is fixedly provided on the SID variable structure (5).

2. A C-arm with a variable SID structure according to claim 1, characterized in that: The SID variable structure (5) includes an upper fixed plate (51), on the upper surface of which a motor (52) is fixedly mounted. The output end of the motor (52) is fixedly connected to a gear one (53), which meshes with a gear two (54). The center of the gear two (54) is fixedly connected to a lead screw (55). A connecting piece (56) is provided on the lead screw (55). Both ends of the connecting piece (56) are rotatably connected to a right connecting rod (57). A lower fixed plate (58) is provided at the end of the right connecting rod (57) away from the connecting piece (56). A stabilizing groove (59) is fixedly mounted on the lower fixed plate (58). A moving rod (510) is provided in the stabilizing groove (59). Both ends of the moving rod (510) are rotatably connected to a left connecting rod (511). The end of the left connecting rod (511) away from the moving rod (510) is rotatably connected to the upper fixed plate (51).

3. A C-arm with a variable SID structure according to claim 2, characterized in that: The right link (57) and the left link (511) are connected by a pin at their center positions, and the right link (57) and the left link (511) form an X-link structure.

4. A C-arm with a variable SID structure according to claim 2, characterized in that: The lower surface of the upper fixing plate (51) is fixedly provided with a lead screw base, and the lead screw (55) is rotatably connected to the lead screw base.

5. A C-arm with a variable SID structure according to claim 2, characterized in that: A connecting bracket is fixedly provided on the upper fixing plate (51), and one end of the connecting bracket is fixedly connected to the C-arm (3).

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