JP4655586B2 - X-ray fluoroscopic equipment - Google Patents

Description

  The present invention relates to an X-ray fluoroscopic apparatus, and more particularly to a top plate lifting function of a fluoroscopic table and a holding mechanism for the entire apparatus.

  In recent years, digitalization and networking of X-ray TV systems have been rapidly progressing. In addition, the purpose of use of the apparatus is diversified by being used for various examinations and treatments such as conventional gastrointestinal examinations, non-vascular IVR, endoscopic techniques, angiography and the like. Against the background of such remarkable development, an X-ray fluoroscopic apparatus that can make full use of the characteristics of digitization, increase the operating rate of the apparatus, effectively use the XTV room, and can be used for various diagnostic purposes. Is desired.

FIG. 4 shows an external view of a conventional X-ray fluoroscopic apparatus, (a) shows a front view with the top 3 in a horizontal state, and (b) shows a side view.
In this X-ray fluoroscopic imaging apparatus, a base 10 is installed on a floor, a support column 8 is provided on the base 10, and cantilevered via a drive unit 9 that moves up and down. An image tube 4 having a TV camera 5 attached to the back surface and an X-ray tube 1 having a collimator 2 attached to the top plate 3 via an X-ray tube support column 7 are held. Then, by rotating the fluoroscopic imaging table up and down, from the digestive organ examination using the compression cylinder 6, various examinations such as non-vascular IVR, endoscopic technique, angiography, etc. by the parallel movement of the video system and the top plate lifting function, Used for treatment.

In the X-ray fluoroscopic imaging table, an image system composed of an X-ray tube 1 and an X-ray image receiving unit (image tube 4 and TV camera 5) can move in parallel to the top 3 and only the image system can be moved without moving the subject. With this, it is possible to secure a wide examination area of the whole body.
In the digital tomography using the image tube 4, accurate tomographic information can be displayed in real time from a large-capacity image collected while finely changing the X-ray irradiation angle by the high-speed image processing function of the DR apparatus. it can.

Furthermore, the top plate 3 is formed in a flat shape so that the subject can be easily replaced, and the top plate 3 can be raised and lowered to a height of 79 to 110 cm when the floor is horizontal. It facilitates the transfer of subjects from the letcher. Moreover, when performing IVR, the height of the top plate 3 can be adjusted according to the posture of the operator, and the burden is greatly reduced.
Moreover, the top plate 3 and the video system can be rotated horizontally and upright from a reverse inclination. Further, oblique angle imaging can be performed with the X-ray tube 1 directed obliquely.
The X-ray fluoroscopic apparatus having the above-described top-bottom lifting function is employed only in a high-function and multipurpose high-class apparatus (for example, see Non-Patent Document 1).
"Shimazu review" Shimadzu Corporation February 19, 2003 Vol. 59 no. 3.4 p 147-155

The conventional X-ray fluoroscopic apparatus is configured as described above. As shown in FIG. 5 (schematic side view), a driving unit 9 is provided on a support column 8 provided on a base 10, and the apparatus The whole is held by a large leg 10a surrounded by a dotted line laid out on the back of the apparatus, and the top plate 3 and the video system (X-ray tube 1, image tube 4, etc.) are held by a cantilever holding mechanism, and there is a ceiling. By providing the drive unit 9 for raising and lowering the plate 3, a top plate raising and lowering function is configured. As a result, there is a problem that the size of the apparatus is inevitably increased.
In recent years, X-ray fluoroscopic imaging tables are often used for various purposes, and when the surgeon performs treatment on the subject when the top 3 is horizontal, the height of the top 3 according to the surgeon is high. An adjustment function (top plate lifting function) is required. Further, when a subject who cannot stand up by himself / herself is placed on the apparatus, the height of the lower top plate 3 is required in a horizontal position.
Although there is this requirement for a device of a popular class, there is a problem that the device of this class must be configured so as to be able to cope with a small installation space.
The present invention has been made in view of such circumstances, and it is possible to reduce the top plate height in a horizontal position by providing a top plate lifting function in a compact structure with a simple structure without increasing the size of the device. An object of the present invention is to provide an X-ray fluoroscopic apparatus that can be used.

In order to achieve the above object, the X-ray fluoroscopic imaging apparatus of the present invention has an image system composed of an X-ray tube and an X-ray image receiving unit disposed opposite to each other before and after a subject placed on a top plate, In the X-ray fluoroscopic apparatus configured to move the top plate up and down, a main frame portion that holds the top plate portion and the video system, two lift plates that hold the main frame portion on both sides, and 2 A rack disposed on one lifting plate, a leg that holds a pinion that meshes with each of the racks, and a lifting device that rotationally drives each of the pinions to drive the lifting plate in conjunction with the lifting plate. Consists of two chains that individually drive each of the pinions, and a lift drive motor that rotationally drives each of the chains so as to drive the lift plates in conjunction with each other. axis More driven, the elevation driving motor is characterized in that rotationally drives the drive shaft.

The X-ray fluoroscopic imaging apparatus of the present invention is configured as described above, and the entire apparatus is held on both sides in the short direction of the main frame that holds the top plate part, that is, the front surface and the back surface. Means for moving up and down in conjunction with each other.
By holding the entire device with lifting plates placed on both sides in the short direction of the main frame that holds the top plate, the center of gravity of the device is stably held on both sides, and the main frame and legs have high rigidity. Make it unnecessary.
Moreover, by driving the lift plate in conjunction with each other, a simple and compact drive unit is provided, and a top plate lift function is added without increasing the size of the apparatus.

  The X-ray fluoroscopic imaging apparatus of the present invention is configured as described above. In the conventional apparatus, the entire apparatus is held by large legs laid out on the back of the apparatus, and weight parts such as a top plate and an image system are back. In this device, the center of gravity of the device is stably held on both sides by two lifting plates arranged on both sides of the top plate in the short direction. In addition, since the top plate is moved up and down by interlocking the holding portions on both sides, a large holding column is not required on the back surface as in the prior art. The structure does not require high rigidity, and the top plate lifting function can be added by a simple and compact mechanism. Therefore, the device itself can be designed compactly and can be used even in a small installation space.

  The X-ray fluoroscopic apparatus of the present invention is provided with two elevating plates that are pivotally attached to the left and right of the top plate main frame, and a leg portion that drives the elevating plate to move up and down so that the height of the top plate can be lowered in a horizontal position. We realized a device with a simple and compact mechanism.

An embodiment of the X-ray fluoroscopic apparatus of the present invention will be described with reference to FIGS. FIG. 1 shows a perspective view of the X-ray fluoroscopic imaging apparatus of the present invention, FIG. 2 shows an external view of the X-ray fluoroscopic imaging apparatus, (a) shows a front view of the top plate 3 in a horizontal state, and (b ) Shows a side view.
As shown in FIG. 1, the X-ray fluoroscopic apparatus of the present invention is equipped with a main plate 21 on which a subject is placed and an X provided in front of the subject placed on the top plate 3. The X-ray image receiving unit (image tube 4 and TV camera 5) arranged opposite to the X-ray tube 1 and below the top plate 3, the top plate 3 and the video system (X-ray tube 1 and X-ray image receiving unit) ), And a translation unit 29a that translates the video system relative to the top plate 3; and lift plates 22a and 22b provided on the legs 25 on both sides of the top plate 3; It is comprised from the top plate raising / lowering part 20 moved up and down by.
The X-ray fluoroscopic apparatus includes a top plate 3, an X-ray tube 1 supported by an X-ray tube support column 26, and an X-ray image receiving unit (image tube 4, TV camera 5) provided below the main frame 21. However, it is rotated from the horizontal position to the vertical position by the raising and lowering portion 28a, and the digestive tract examination is performed using the compression cylinder 9, and the height of the top plate 3 mounted on the main frame 21 in the horizontal position. Is lowered by the top plate elevating unit 20 to facilitate the transfer of the subject from a wheelchair or a stretcher. In addition, when performing IVR, the height of the top 3 can be adjusted according to the posture of the operator. The top plate raising / lowering function rotates the pinion 24a via a chain by a motor provided on the leg 25, and the same mechanism is provided on the left and right along the linear guide 23a via the rack, and the elevation plates 22a and 22b are moved up and down. The top 3 is moved up and down.

  The X-ray fluoroscopic apparatus differs from the conventional apparatus in that the conventional apparatus is equipped with a drive unit 9 on a large column 8 standing on a base 10, as shown in FIG. The top 3 moves up and down by moving up and down along the line 8. The top plate 3 and the video system (X-ray tube 1, image tube 4, TV camera 5) are cantilevered by the drive unit 9, and the support mechanism is also large. On the other hand, as shown in FIG. 2, the X-ray fluoroscopic apparatus is equipped with a lift drive motor 27, a tilt drive motor 28, and an image drive motor 29 on a leg 25, and a large column 8 as shown in FIG. This device is supported by the left and right frames of the legs 25, stably holds the center of gravity of the device on both sides, and moves the top plate 3 in conjunction with the holding portions on both sides. The height of the top plate 3 can be made lower than that of the conventional device.

  The top plate 3 mounted on the main frame 21 rotates the pinions 24a and 24b attached to both sides of the legs 25 through the chains 32a and 32b by the rotation of the lifting drive motor 27, and the linear through the racks 31a and 31b. The same mechanism is provided on the left and right along the guides 23a and 23b, and the elevating plates 22a and 22b are moved up and down to raise and lower the main frame 21 and the top plate 3 (not shown in FIG. 1). Refer to FIG. 3 for the configuration). Then, the video system (X-ray tube 1, image tube 4, TV camera 5) can be moved in parallel to the top board 3 by the video system drive motor 29, and non-vascular IVR, endoscopic technique, angiography, etc. Various tests and treatments can be performed. Then, by rotating the top board 3 and the video system to a standing position, a digestive organ examination can be performed using the compression cylinder 6 provided on the X-ray tube support column 26.

Next, each component of the apparatus will be described.
The top 3 is a bed that is mounted on the main frame 21 and on which a subject is placed. The main frame 21 is supported from the legs 25 on both sides, and the surface is made of a material having good maintainability.
The X-ray tube 1 is light and compact, is provided in front of the subject, reduces the load on the X-ray tube support column 26 side, and improves the operability of the entire system.

An X-ray image receiving unit (image tube 4 and TV camera 5) is disposed below the top plate 3 so as to face the X-ray tube 1 and forms an image receiving unit using the image tube 4, but a flat panel. If configured using a detector (FPD), the height of the top plate 3 can be further reduced, the video system drive mechanism can be made more compact, and the entire apparatus can be made smaller. .
The raising / lowering portion 28a is a raising / lowering drive motor 28 provided on the elevating plate 22b mounted on the leg 25, and holds the top plate 3 and the video system (X-ray tube 1 and X-ray image receiving portion) and rotates up and down. Let In particular, in a digestive organ examination, a contrast medium is inspected by using the compression cylinder 6 by allowing the subject to drink the contrast medium with the top 3 placed in a standing position.

The translation unit 29a translates the video system (X-ray tube 1, image tube 4, TV camera 5) with respect to the top plate 3, and in particular lengthens the entire length so that the whole body can be covered. The movement is not performed, the stroke is increased only by moving the video system, and the photographing area is widened. In addition, the burden on the subject is minimized, such as during an IVR examination and an endoscopic examination.
The top plate elevating unit 20 moves the both sides of the main frame 21 holding the top plate 3 up and down by elevating plates 22 a and 22 b provided on the legs 25. When the subject is transferred from the stretcher to the top plate 3 of the fluoroscopic imaging table by the top plate up / down operation, the top plate height can be lowered in accordance with the stretcher. In addition, it is possible to move up and down in a transparent state so that the height of the top 3 can be adjusted according to the posture of the operator during IVR.
In contrast to the conventional configuration, this apparatus employs top and bottom lifting mechanisms 22a and 22b on both sides of the main frame 21, so that a person who cannot stand by himself / herself is placed on and off the apparatus. The top plate 3 can be lowered to a lower height.

FIG. 3 shows the top plate elevating unit 20 of the present apparatus, wherein (a) is a perspective view of the top plate elevating unit 20, and (b) is a side view of the top plate elevating unit 20.
The lift plates 22a and 22b are held by the linear guides 23a and 23b with respect to the legs 25 so as to be slidable in the vertical direction. Further, racks 31a and 31b are fixed to the lift plates 22a and 22b, and mesh with pinions 24a and 24b fixed to the legs 25 so as to be rotatable, so that the vertical positions are maintained.
On the other hand, the driving force of the elevating drive motor 27 attached to the back side of the device of the leg 25 is transmitted to the drive shaft 35 by the chain 33 via the speed reducer 34, and on both sides of the top plate 3 shown in FIG. It is transmitted to the pinions 24a and 24b via the arranged chains 32a and 32b.
With the above mechanism, the elevating plates 22a and 22b can be slid in the vertical direction in conjunction with the forward / reverse rotation of the elevating drive motor 27, and are held by the elevating plates 22a and 22b. The top plate 3 shown in FIG. 2 can stably move up and down.

Next, the operation of this apparatus will be described with reference to FIG.
When performing a circulatory examination and accompanying IVR, first, the operator operates the operation panel to rotate the lifting drive motor 27 and raises the height of the top 3 with the top / bottom lifting function of the lifting / lowering plates 22a and 22b. Lower the subject and place the subject on the top 3 from a wheelchair or stretcher. Then, the top 3 is positioned at a height at which the operator can easily work. Next, the imaging system is moved in parallel to the body axis direction of the subject on the top 3, the X-ray fluoroscopic position is determined, and a necessary part is imaged by angiography or the like. Then, if necessary, treatment is performed by injecting an effective thrombolytic solution into a selective artery using a microcatheter or the like. Ultrasound diagnosis and endoscopy are performed.

In the case of a digestive organ examination, first, the operator operates the operation panel to rotate the device's upside-down drive motor 28 to bring the device upright with the up / down function. The up-and-down movement of the top plate 3 is automatically adjusted so that the X-ray image receiving unit (the image tube 4 and the TV camera 5) does not come into contact with the floor at the time of rising and can be brought into a standing state. Then, a platform on which the subject can be placed is attached to the end of the top plate 3, and the subject is placed on the platform. X-ray fluoroscopy is performed at the same time that a contrast medium is contained in the mouth and a part is swallowed. The necessary part is imaged, the abdomen of the subject is compressed by operating the compression cylinder 6 attached to the X-ray tube support column 26, and the state where the contrast medium spreads on the wall of the diagnosis part of the digestive tract is imaged. To do.
When the above inspection is completed, the subject is lowered from the top 3 and the operation is completed.

  The present invention relates to an X-ray fluoroscopic apparatus, and more particularly to a top plate lifting function of a fluoroscopic table and a holding mechanism for the entire apparatus. Further, the present invention can be applied to a surgical examination table or the like as an application example of the present invention.

It is explanatory drawing which showed one Example of the X-ray fluoroscopic imaging apparatus of this invention. It is explanatory drawing which showed the front and side of the X-ray fluoroscopic apparatus of this invention. It is a figure for demonstrating the top plate raising / lowering mechanism of the X-ray fluoroscopic apparatus of this invention. It is explanatory drawing which showed the conventional X-ray fluoroscope. It is the schematic which showed the large sized leg part of the conventional X-ray fluoroscope.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 X-ray tube 2 Collimator 3 Top plate 4 Image tube 5 TV camera 6 Compression cylinder 7 X-ray tube support support column 8 Support column 9 Compression tube 10 Base 10a Large leg part 20 Top plate elevating part 21 Main frame 22a Elevating board 22b Elevation Plate 23a Linear guide 23b Linear guide 24a Pinion 24b Pinion 25 Leg 26 X-ray tube support column 27 Elevating drive motor 28 Elevating drive motor 28a Elevating part 29 Video system drive motor 29a Parallel moving part 31a Rack 31b Rack 32a Chain 32b Chain 33 Chain 34 Reducer 35 Drive shaft

Claims (1)

In the X-ray fluoroscopic imaging apparatus in which an image system composed of an X-ray tube and an X-ray image receiving unit is arranged opposite to each other before and after the subject placed on the top plate unit, and the top plate unit is configured to be movable up and down, A main frame portion that holds the top plate portion and the video system, two elevating plates that hold the main frame portion on both sides in the lateral direction, a rack disposed on the two elevating plates, and the rack Legs that hold the respective pinions that mesh with each other, chains that drive the respective pinions, and elevating means that drives the chains so as to drive the elevating plates in conjunction with each other. It consists of two chains that are driven individually, and a lift drive motor that rotationally drives each of the chains so as to drive the lift plate in conjunction with each other. The two chains are driven by a single drive shaft. The elevating drive motor, X-rays fluoroscopic apparatus, characterized in that for rotating the drive shaft.

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