JPH08336518A - Medical x-ray fluoroscopic system - Google Patents

Abstract

PURPOSE: To observe the fluoroscopic image of a target part without moving a line of sight widely when a catheter operation is performed on an examinee as applying X-ray fluoroscopy by an operator in a medical X-ray fluoroscopic system. CONSTITUTION: An image signal produced by an image processing system device by a projector 25 disposed at a prescribed position is fetched, and an image is projected advancing the direction of the top board 2 of a table device 4, and the image projected from the projector 25 is displayed on the surface of a projection screen 26 formed so as to cover a part of the examinee 1 placed on the top board 2. In this way, the fluoroscopic image of the target part is observed without moving the line of sight widely when the operator 20 performs the catheter operation, etc., on the examinee 1 as applying the X-ray fluoroscopy.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
TECHNICAL FIELD The present invention relates to a medical X-ray fluoroscopic apparatus that irradiates X-rays and collects and displays a fluoroscopic image, and in particular, a fluoroscopy of a target site without significantly moving the line of sight when an operator performs a catheter operation on a subject while performing X-ray fluoroscopy The present invention relates to a medical X-ray fluoroscope capable of seeing an image.

[0002]

2. Description of the Related Art As shown in FIGS. 6 and 7, a conventional medical X-ray fluoroscopic apparatus has a top plate 2 on which a subject 1 is placed and a support base 3 for moving the top plate 2 vertically and horizontally. A table device 4 having a table, and a subject 1 laid on the top plate 2.
X-ray tube device 5 for irradiating X-rays to the body, and a video system device arranged to face the X-ray tube device 5 with the top plate 2 interposed therebetween, for detecting a transmitted X-ray image of the subject 1 and converting it into an electric signal. 6 and the above X
A support mechanism 7 that supports the line tube device 5 and the image system device 6 and moves them around the subject 1, and an image processing system device that performs an arithmetic operation on the electrical signals collected by the image system device 6 to generate an image signal. 8 and an image display device 9 for inputting and displaying the generated image signal.

The video system device 6 in FIG. 6 captures an image intensifier 10 for converting an X-ray image transmitted through the subject 1 into a visible light image, and a visible light image of the image intensifier 10. And a television camera 10 'for converting into an electric signal. In addition, the support mechanism 7 includes a supporter 12 fixed to the floor surface 11, a support arm 13 having one end rotatably supported by the supporter 12, and a support arm 13 sliding on the other end of the support arm 13. C-arm 1 supported as possible
It consists of 4 and. Further, as shown in FIG. 7, the image processing system device 8 includes an A / D converter 15, an image processing unit 16, a frame memory 17, a display gradation processing unit 18, and a D / A converter 19. Consists of.

The medical X-ray fluoroscopy apparatus having the above-described structure has been indispensable in the field of diagnosis, but recently, it has been used not only for diagnosis but also for treatment. This treatment is performed by inserting the catheter into the body of the subject under fluoroscopy with various instruments attached to the tip of the catheter. It is called IVR (Interventional Radiology) because it can reduce the pain given to the patient and can be treated at low cost. In FIG. 6, an operator (doctor) 20 who operates a catheter using an IVR procedure is positioned on one side of the subject 1 laid on the top plate 2 of the table device 4 to perform treatment. At this time, the operator 20 attaches the catheter to the subject 1
The position information of the catheter inserted into the subject is obtained from the fluoroscopic image displayed on the screen of the image display device 9. [0004]

However, in such a conventional medical X-ray fluoroscopic apparatus, the fluoroscopic image collected about the diagnostic region of the subject is only displayed on the screen of the image display device 9. When the surgeon 20 checks the fluoroscopic image at that time while inserting the catheter in the body axis direction of the subject 1, it was necessary to shift the line of sight from the catheter operation hand to the screen of the image display device 9. .
At this time, as shown in FIG. 6, the image display device 9 is located at a slightly higher position on the side of the table device 4 due to restrictions on the arrangement of various devices. Line of sight 2 from the line of sight 21 at hand to the image display device 9
It was a big move to 2. Therefore, while the line of sight 22 is directed to the image display device 9, the situation at the hand of the catheter operation cannot be seen at all, and the insertion operation of the catheter may not be performed accurately and smoothly. It was an obstacle.

Therefore, the present invention addresses such a problem and allows a surgeon to view a fluoroscopic image of a target site without significantly moving the line of sight when performing a catheter operation on a subject while performing X-ray fluoroscopy. An object of the present invention is to provide a medical X-ray fluoroscopic apparatus that can be used.

[0006]

In order to achieve the above object, a medical X-ray fluoroscopic apparatus according to the present invention comprises a top plate on which a subject is laid down and a support base for moving the top plate up, down, left and right. A table device having the same, an X-ray tube device for irradiating the subject lying on the top plate with X-rays, and a transmission X-ray image of the subject which is arranged so as to face the X-ray tube device with the top plate interposed therebetween. An image system device for detecting and converting into an electrical signal, a support mechanism for supporting the X-ray tube device and the image system device and moving them around the subject, and processing the electrical signals collected by the image system device. In an X-ray fluoroscopy apparatus for medical use having an image processing system device for generating an image signal according to the above and an image display device for inputting and displaying the generated image signal, the image signal generated by the image processing system device is captured. To the top of the above table device A projection screen for projecting an image is provided, and a projection screen for projecting an image projected from the projection device is provided on the surface of the subject so as to cover a part of the subject lying on the top plate. is there.

The projection device is rotatably supported about one point on the lower surface of a moving block which is movable along the longitudinal direction of the top plate by a guide rail provided on the ceiling surface. The image projection port may be provided so as to be directed toward the projection screen.

In the projection screen, a light-colored projection screen is held at least on both sides by a frame plate formed in a curved shape so as to cover the subject lying on the top plate of the table device. It may be configured as.

Further, the rotation operation of the projection device may be operated by an operation switch, a foot switch or a voice recognition switch provided on the table device.

For supporting the projection screen, a bearing device is fixed to a part of a support base of the table device, and a shaft rod extending parallel to the longitudinal direction of the top plate of the table device is inserted and fixed in the bearing device. A linear guide bearing that is slidable in the longitudinal direction may be fitted to the shaft rod, and the frame plates of the projection screen may be fixed to screen support members provided at both ends of the linear guide bearing.

Alternatively, for supporting the projection screen, a bearing device is fixed to a part of a support base of the table device, and a shaft rod extending parallel to the longitudinal direction of the top plate of the table device is inserted and fixed in the bearing device. , A linear guide bearing slidable in the longitudinal direction is fitted to the shaft rod, and a frame plate of the projection screen is slidably fitted to a curved rail-shaped screen support member provided at both ends of the linear guide bearing. Combined,
The projection screen may be allowed to project or retract above the top plate.

[0012]

The medical X-ray fluoroscopy device thus constructed captures the image signal generated by the image processing system device by the projection device provided at the predetermined position and directs the image toward the top plate of the table device. It operates so as to project the image projected from the projection device on the surface of the projection screen which is projected and covers a part of the subject lying on the top plate. This allows the operator to see a fluoroscopic image of the target site without significantly moving the line of sight when performing a catheter operation or the like on the subject while performing X-ray fluoroscopy.

[0013]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. FIG. 1 is a schematic diagram showing an embodiment of a medical fluoroscope according to the present invention, and FIG. 2 is a block diagram thereof. This medical X-ray fluoroscopy device is designed to detect X-rays on the diagnostic site of a subject.
It irradiates a line and collects and displays a fluoroscopic image thereof. As shown in FIGS. 1 and 2, a table device 4, an X-ray tube device 5, a video system device 6, a support mechanism 7, and an image. It has a processing system device 8 and an image display device 9.

The table device 4 is placed on the subject 1 and placed between an X-ray tube device 5 and an image system device 6 which will be described later. The table device 4 has a top plate 2 on which the subject 1 is placed. ,
Move the top plate 2 up and down as shown by arrows A and B, and
It has a support base 3 for moving left and right like D. The X-ray tube device 5 irradiates the subject 1 laid on the top plate 2 with X-rays, and is arranged on one side of the top plate 2 with the top plate 2 interposed therebetween. Further, the image system device 6 detects an X-ray image radiated from the X-ray tube device 5 and transmitted through the subject 1, and converts it into an electric signal. The X-ray tube device 5 sandwiches the top plate 2. And an image intensifier 10 that converts the X-ray image that has passed through the subject 1 into a visible light image, and a television that captures the visible light image of the image intensifier 10 and converts it into an electrical signal. And a camera 10 '.

The support mechanism 7 supports the X-ray tube device 5 and the image system device 6 and moves them around the subject 1. The support device 12 fixed to the floor 11 and the support device 1 are supported.
The support arm 13 has one end rotatably supported by the second arm 2 and a C-shaped arm 14 slidably supported by the other end of the support arm 13. The X-ray tube device 5 and the image system device 6 are supported on both ends of the C-shaped arm 14, respectively. Therefore, by the movements of the support arm 13 and the C-shaped arm 14, the X-ray tube device 5 and the image system device 6 can freely move around the subject 1 on the top plate 2.

The image processing system device 8 arithmetically processes the electrical signals collected by the video system device 6 to generate an image signal. As shown in FIG. 2, an A / D converter 15 and an image processing device are provided. Unit 16, frame memory 17, and display gradation processing unit 1
8 and a D / A converter 19. The image display device 9 inputs the image signal generated by the image processing system device 8 and displays a perspective image, and is composed of, for example, a television monitor.

Here, in the present invention, a projection device 25 and a projection screen 26 are provided in addition to the above components. The projection device 25 takes in the image signal generated by the image processing system device 8 and projects the image toward the top plate 2 of the table device 4, and as shown in FIG. It is connected to the signal line branched from the output side of the D / A converter 19 of the device 8. As shown in FIG. 1, a concrete mounting structure of the projection device 25 is such that a linear guide rail 28 provided on a ceiling surface 27 is provided with an arrow E along the longitudinal direction of the top plate 2 of the table device 4. , F, a movable block 29 that is movable is suspended. A rotary plate 30 that is rotatable as shown by arrows G and H is provided at one location on the lower surface of the moving block 29. One end of the rotary plate 30 is fixed to the rotary plate 30 and the other. A rotary arm 31 is attached, which has a freely rotatable end and is curved slightly downward. The projection device 25 is supported on the tip of the rotary arm 31 so that the image projection port is directed toward the projection screen 26.

The projection screen 26 projects an image projected from the projection device 25 on its surface and covers a part of the subject 1 laid on the top plate 2 of the table device 4. It is provided in. As shown in FIG. 3, the concrete structure of the projection screen 26 is such that a light-colored projection screen 32 is formed in a curved shape upward so as to cover the subject 1 lying on the top plate 2. Two frame plates 33
At least both side portions are sandwiched by a and 33b. The projection screen 32 is, for example, a white screen cloth or a plastic screen. In addition, the frame plate 33a,
The reference numeral 33b is made of a material having good X-ray transparency such as carbon fiber, and is composed of two members which are formed in a U shape as a whole in a plan view. Then, the two frame plates 33a,
The projection screen 32 is attached between 33b.

FIG. 1 shows a state in which the projection screen 26 shown in FIG. 3 is simply placed above the top plate 2 so as to cover the body surface of the subject 1, but as shown in FIG. You may support it. That is, the bearing device 34 is fixed to a part (for example, the upper side surface part) of the support base 3 of the table device 4 shown in FIG. 1, and the bearing device 34 extends in parallel to the longitudinal direction of the top plate 2 of the table device 4. A shaft rod 35 is inserted and fixed, and a linear guide bearing 36 slidable in the longitudinal direction thereof as shown by arrows J and K is fitted to the shaft rod 35, and a screen provided at both ends of the linear guide bearing 36. The frame members 33a, 33 of the projection screen 26 are attached to the support members 37a, 37b.
b is fixed and supported. In this case, the projection screen 26 fixed to the screen support members 37a and 37b can be moved to an arbitrary position on the subject 1 by sliding the linear guide bearing 36 as indicated by arrows J and K. . The bearing device 34 shown in FIG.
It is also possible to provide a magnet on the shaft bar 35, the linear guide bearing 36, and the projection screen 26 by means of this magnet, and attach them to a part of the support base 3 of the table device 4.

Further, in FIG. 5, the screen support members 37a and 37b are connected to the frame plate 33a of the projection screen 26,
It may be formed in a curved rail shape having the same bending ratio as 33b, and the frame plates 33a, 33b of the projection screen 26 may be slidably fitted and supported by the curved rail-shaped screen support members 37a, 37b. In this case, as shown in FIG. 4, the projection screen 26 can be slid as indicated by arrows L and M so that the projection screen 26 can be projected above the top plate 2 or retracted below. . At this time, as shown in FIG. 5, both ends 38a, 38 of the frame plates 33a, 33b of the projection screen 26 are
It is possible to add a function of preventing the projection screen 26 from falling by changing the curvature rate of b from the curvature rates of other portions so as to be different from the curvature rates of the curved rail-shaped screen support members 37a and 37b.

Next, the use of the medical X-ray fluoroscopy apparatus of the present invention thus constructed will be described. First, in FIG. 1, the subject 1 is laid on the top plate 2 of the table device 4. In this state, the operator 20 stands sideways on the top side of the subject 1 on the foot side and inserts the catheter from the subject 1 such as the right thigh. At this time, in order to confirm the position of the catheter, the direction of the blood vessel, etc.
The catheter is advanced to the target site while radiating a line and checking the fluoroscopic image of the subject 1. And the surgeon 20
In order to check the position or direction to be seen through, the support arm 13 and the C-shaped arm 14 are operated by the hand switch 39 or the foot switch 40 provided on the table device 4.

Next, the operator 20 sends an irradiation signal using the foot switch 40 in order to irradiate X-rays when he / she wants to see through. Upon receiving this irradiation signal, X-rays are emitted from the X-ray tube device 5, and the transmitted X-ray image of the subject 1 is obtained by the image system device 6.
Is detected and converted into an electric signal. This electric signal is input to the image processing system device 8 in FIG. 2 and subjected to required arithmetic processing to generate an image signal, which is converted into an analog signal by the D / A converter 19. This analog image signal is
At the same time as being sent to the image display device 9 and sent to the projection device 25 and displayed on the screen of the image display device 9,
The projection device 25 projects the projection image onto a projection screen 26 provided so as to cover a part of the subject 1, and a perspective image of the subject 1 is displayed on the projection screen 26.

As a result, the projection screen 26 in the immediate vicinity of the subject 1 on which the operator 20 is operating the catheter
Since the fluoroscopic image is displayed above, the IVR procedure can be performed in a state in which the movement of the line of sight is small when the catheter is carefully operated while checking the state of the insertion portion of the catheter and the state of the subject 1. At this time, the bearing device 34 and the shaft rod 35 for supporting the projection screen 26 shown in FIG. 5 are fixed to the side surface of the top plate 2 opposite to the side on which the operator 20 stands in FIG. It does not disturb the operation of the operator 20. In addition, when the operator 20 observes the physical condition of the subject 1, when the projection screen 26 becomes an obstacle,
As shown in FIG. 3, by pushing the front edge of the projection screen 26, a curved rail-shaped screen support member 37 is formed.
It is possible to slide in the direction of the arrow M to retract the subject 1 to the lower position by the guidance of a and 37b.

Further, in FIG. 1, the support arms 13 and C
The positions of the X-ray tube device 5 and the image system device 6 are changed by the operation of the die arm 14, but at this time, the X-ray tube device 5 or the image system device is placed at a position where the projection of the image from the projection device 25 to the projection screen 26 is blocked. The device 6 may come. In such a case, the projection device 25 is rotated. That is, the operator 20 operates using the hand switch 39 or the foot switch 40 provided on the table device 4, or the voice recognition switch (not shown). As a result, the rotary plate 30 rotates appropriately, the projection device 25 provided at the tip of the rotary arm 31 rotates,
It can be set at a position where it can be projected onto the projection screen 26.

In FIG. 1, the projection device 25 is provided so as to be suspended from the moving block 29 provided on the ceiling surface 27. However, the present invention is not limited to this, and may interfere with other components. If not, it may be provided at another suitable position. Further, the X-ray tube device 5 and the image system device 6 are not limited to a pair, but can be similarly applied to a device provided with two pairs.

[0026]

Since the present invention is constructed as described above,
An image signal generated by an image processing system device is captured by a projection device provided at a predetermined position, an image is projected toward the top plate of the table device, and one of the subjects lying on the top plate is captured. An image projected from the projection device can be displayed on the surface of the projection screen provided so as to cover the portion. This allows the operator to see a fluoroscopic image of the target site without significantly moving the line of sight when performing a catheter operation or the like on the subject while performing X-ray fluoroscopy. Therefore,
The catheter insertion operation can be performed accurately and smoothly, and the treatment by the IVR procedure can be efficiently performed.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of a medical fluoroscope according to the present invention.

FIG. 2 is a block diagram showing the medical fluoroscope.

FIG. 3 is a perspective view showing a structure of a projection screen.

FIG. 4 is a side view showing a support structure for the projection screen.

FIG. 5 is a perspective view showing another example of the support structure of the projection screen.

FIG. 6 is a schematic view showing a conventional medical fluoroscope.

FIG. 7 is a block diagram showing a conventional device.

[Explanation of symbols]

 1 subject 2 top plate 3 support 4 table device 5 X-ray tube device 6 image system device 7 support mechanism 8 image processing system device 9 image display device 25 projection device 26 projection screen 27 ceiling surface 28 guide rail 29 moving block 30 rotation Plate 31 Rotating arm 32 Projection screen 33a, 33b Frame plate 34 Bearing device 35 Shaft rod 36 Linear guide bearing 37a, 37b Screen support member

Claims (6)

[Claims] 1. A table device having a table on which a subject is laid down and a support table for moving the table vertically and horizontally, and X for irradiating the subject laid on the tabletop with X-rays.
A X-ray tube device, an image system device that is disposed so as to face the X-ray tube device with the top plate interposed therebetween, and detects a transmitted X-ray image of the subject and converts it into an electric signal, and the X-ray tube device and the image system device A support mechanism that supports and moves around the subject, an image processing system device that generates an image signal by arithmetically processing the electrical signals collected by the video system device, and inputs the generated image signal. In a medical X-ray fluoroscopic apparatus having an image display device for displaying, a projection device for capturing an image signal generated by the image processing system device and projecting an image toward the top plate of the table device is provided, A medical X-ray fluoroscope including a projection screen which is provided so as to cover a part of a subject laid on the top plate and which has a projection screen for projecting an image projected from the projection device on the surface thereof. 2. The projection device is rotatably supported about one point on the lower surface of a moving block which is movable along the longitudinal direction of the top plate by a guide rail provided on the ceiling surface. The medical X-ray fluoroscopic apparatus according to claim 1, wherein an image projection port is provided so as to be directed toward the projection screen. 3. The projection screen holds a light-colored projection curtain at least on both sides by a frame plate formed in a curved shape so as to cover an object lying on a top plate of a table device. The medical X-ray fluoroscope according to claim 1 or 2, wherein the medical X-ray fluoroscope is configured as follows. 4. The medical X-ray fluoroscopic apparatus according to claim 2, wherein the rotation operation of the projection device is performed by an operation switch, a foot switch or a voice recognition switch provided on the table device. 5. For supporting the projection screen, a bearing device is fixed to a part of a support base of the table device, and a shaft rod extending parallel to the longitudinal direction of the top plate of the table device is inserted and fixed in the bearing device. , A linear guide bearing slidable in the longitudinal direction of the shaft rod is fitted, and a frame plate of the projection screen is fixed to screen support members provided at both ends of the linear guide bearing. The medical X-ray fluoroscopic apparatus according to claim 3. 6. The projection screen is supported by fixing a bearing device to a part of a support base of the table device, and inserting and fixing a shaft rod extending parallel to the longitudinal direction of the top plate of the table device into the bearing device. , A linear guide bearing slidable in the longitudinal direction is fitted to the shaft rod, and a frame plate of the projection screen is slidably fitted to a curved rail-shaped screen support member provided at both ends of the linear guide bearing. 4. The medical X-ray fluoroscopic apparatus according to claim 3, wherein the projection screen can be projected or retracted above the top plate.