JPH0449811Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to an image tube device that provides flexibility in attaching and holding an X-ray image tube housed in an image tube container to an X-ray fluoroscopic imaging device. It is.

[Prior art]

In an image tube device used in an X-ray fluoroscopic imaging device, an X-ray image intensifier (hereinafter referred to as an image tube) is housed and fixed in an image tube container made of aluminum material, and the optical system is attached to the image tube container. An optical system consisting of a lens, a prism, a reflector, etc., which sends an X-ray fluoroscopic optical image to a television camera, spot camera, cine camera, etc., is attached to the surface. Therefore, in addition to the optical system and the television camera, the weight of a spot camera or a cine camera, or sometimes both cameras, acts on the holder of the image tube device, and the image tube container that is commonly used In some cases, holding the front part is not sufficient, and it is necessary to provide a support part in a part other than the front part, that is, usually on the side, and to attach it to the X-ray fluoroscopic imaging apparatus using this side support part.

This type of attachment is required not only when the weight is particularly high as described above, but also when the device to which the image tube is attached is an X-ray fluoroscopic imaging device with a C-shaped or U-shaped arm for cardiovascular diagnosis. This is the case.

FIG. 2 shows the external appearance of a conventional image tube container provided with the above-mentioned side support portions. FIG. 3 is an external side view showing the attached state, in which an image tube container 2 containing an image tube inside is attached to the support frame 1 of the X-ray fluoroscopic imaging device via its side support portion 3. An optical system 4 consisting of a lens system and an optical image distributor is fixed to the optical system mounting surface of the image tube container 2 with its optical axis aligned with the central axis of the image tube container 2, which is aligned with the optical axis of the image tube. has been done. The optical system 4 is equipped with a television camera 5 on the right side and a cine camera 6 on the left side.

However, if an image tube container 2 equipped with a side support part 3 as shown in FIGS. 2 and 3 is required, according to past experience, it will only account for a few percent of the total number of image tubes shipped. Only. Therefore, the side support portion 3 has no purpose in most image tube devices installed in X-ray fluoroscopic imaging devices.

[Problem that the invention attempts to solve]

As mentioned above, in the conventional image tube device, it is obviously wasteful that most of the side support portions 3 are not used at all, and furthermore, the external design of the image tube container is The problem is that it demeans people. However, on the other hand, if it is necessary to maintain the lateral portion by a few percent, it is desired to be able to do so economically without impairing the appearance as much as possible.

Therefore, it is an object of this invention to provide an image tube device in which a support that can hold the image tube container laterally can be attached as necessary to the image tube container without impairing the function or appearance of the image tube. is a technical issue.

[Means for solving problems]

In order to solve the above-mentioned technical problem, this invention has a cylindrical outer shape, which is attached to the optical system mounting surface of the image tube container with its optical axis aligned with the optical axis of the output surface of the image tube. It is divided into a lens mount part having a square shape and an output optical image distributor having a rectangular outer shape, and when it is necessary to hold the image tube container at the side, a side mounting surface is formed on the outer end surface. A side support having an overhanging arm portion is attached to the optical system attachment surface of the image tube container via the lens mount portion.

[Effect]

Since the image tube device according to this invention is configured as described above, when it is mounted with the front part holding which is usually carried out, the lens mount part is attached to the optical system mounting surface of the image tube container. An optical system can be constructed by connecting the output optical image distributor to the upper part of the lens mount part with their optical axes aligned with each other, and when mounting with side support is required, First, the lens mount is fixed to the optical system mounting surface of the image tube container, and before the optical image distributor is connected to it, the above-mentioned side support is superimposed, and this side support is used together with the lens mount to attach the image. By tightening and fixing the image tube device to the optical system mounting surface of the tube container using a fastening bolt, the image tube device can be converted into a side-held type.

〔Example〕

Hereinafter, embodiments of this invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view showing the configuration of the main parts of an embodiment of the device of this invention. However, the output optical image distributor 42 is shown shifted to the left for convenience of illustration.

The optical system mounting surface 21 of the image tube container 20 in which the image tube is housed is formed as the bottom surface of a shallow dowel portion, and a lens mount portion 41 having a cylindrical outer shape is fitted into it with its flange.
The lens mount portion 41 is inserted into the four bolt holes 43 having recesses formed so that the heads of the fastening bolts can be sunk into the flanges, and screwed into the tap holes of the optical system mounting surface 21. is fixed to the image tube container 20. The lens mount part 41 has an output optical image distributor 42 having a rectangular outer shape on its upper rectangular mounting surface so that the output optical image distributors 42 can be connected to each other by means of fastening screws with their optical axes aligned with each other. The image tube device in which the lens mount portion 41 and the output optical image distributor 42 are combined to form an integrated optical system is mounted on the X-ray fluoroscopic imaging device by holding the front portion as described above.
If it is necessary to change the design of the side holding type, loosen the aforementioned fastening screws and remove the output optical image distributor 42 from the lens mount section 41.
Pass the side support 30 through the hole in the annular attachment part through the rectangular attachment part at the top of the lens mount part 41, and overlap the lower surface of the annular attachment part with the flange surface of the lens mount part 41. Both 30 and 41 may be tightened and fixed to the optical system mounting surface 21 of the image tube container 20 using the fastening bolts, and then the output optical image distributor 42 may be integrally coupled to the lens mount portion 41 again as described above. .

As shown in the figure, the side support 30 has a decorative enclosure formed around the annular attachment part,
A side attachment surface 32 is formed on the outer end surface of an overhanging arm portion 31 extending outward in a cantilevered manner from this portion.

〔effect〕

The image tube device according to this invention has the following effects.

() Image tube containers can be unified into a single type with a simple structure.

() When installing the image tube device with side support, the side support can be attached to the image tube container without removing the lens mount, so the optical axis with the image tube will not be disturbed.
The design can be easily changed without impairing its functionality.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing the configuration of the main parts of an image tube device which is an embodiment of this invention, FIG. 2 is an external perspective view of an image tube container of a conventional image tube device, and FIG. 3 is a conventional image tube container. FIG. 3 is an external side view showing an example of an installed state of the image tube device. 20...Image tube container, 21...Optical system mounting surface, 30...Side support, 31...Protruding arm portion, 32...Side mounting surface, 40...Optical system, 41...Lens mount part , 42... Output optical image distributor.

Claims (1)

[Scope of utility model registration request] The optical system, which is attached to the optical system mounting surface of the image tube container that accommodates and fixes the image tube inside with the optical axis of its output surface aligned with the central axis, is connected to the cylindrical lens mount section and output optical image distribution. The lens mount section and the output optical image distributor are arranged so that their respective optical axes coincide with the central axis of the image tube container, and the side mounting surfaces are formed on the outer end surface. An image tube device in which a side support having an overhanging arm portion can be attached to and detached from the optical system attachment surface of the image tube container via the lens mount portion.