Beam limiting device
A technology of beam limiter and ray, which is applied in the field of beam limiter, can solve the problems of unguaranteed transmission control accuracy and complicated structure, and achieve the effect of improving transmission control accuracy and simple structure
Pending Publication Date: 2021-11-16
北京达影科技有限公司
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Problems solved by technology
The existing beam limiter can adopt a rack-and-pinion transmission structure, but this structure is relatively complicated, and it is easy to be restricted by the meshing of the gears or the assembly process, so that the transmission control accuracy cannot be guaranteed.
Method used
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Embodiment Construction
[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0041] In the description of the present invention, it should be understood that when referring to orientation descriptions, such as terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal" ", "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating Or imply that the devic...
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The invention discloses a beam limiting device which comprises a shell, a first ray baffle assembly and a swing arm assembly, the shell comprises a first plate, and a first ray window is formed in the first plate. The first ray baffle assembly is arranged on the first plate in a sliding mode, the fixed end of the swing arm assembly is arranged on the first plate, and the sliding end of the swing arm assembly is connected with the first ray baffle assembly. When the sliding end of the swing arm assembly slides along the first plate, the first ray baffle assembly can be driven to shield or get away from the first ray window, so that the shielding range of the first ray baffle assembly to the first ray window can be flexibly adjusted according to the sliding stroke and direction of the sliding end; therefore, the irradiation range of the rays passing through the first ray window is adjusted. Moreover, the transmission cooperation of the swing arm assembly and the first ray baffle assembly not only satisfies the characteristic of simple structure, but also realizes the independent control of the first ray baffle assembly, thereby effectively improving the transmission control precision of the ray baffle assembly.
Description
technical field [0001] The invention relates to the technical field of medical equipment, in particular to a beam limiter. Background technique [0002] The beam limiter is an electromechanical optical device used to adjust the range of X-ray irradiation. By using the ray baffle to block unnecessary X-ray areas, the radiation dose can be effectively reduced. The existing beam limiter can adopt a rack-and-pinion transmission structure, but this structure is relatively complicated, and it is easily restricted by the meshing condition of the gears or the assembly process, so that the transmission control accuracy cannot be guaranteed. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this reason, the present invention proposes a beam limiter, which can improve the transmission control precision of the ray baffle. [0004] A beam limiter according to an embodiment of the first aspect o...
Claims
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Login to View More IPC IPC(8): A61B6/06
CPCA61B6/06
Inventor 石岩吴涛杨子寒
Owner 北京达影科技有限公司