JPS626542Y2 - - Google Patents

Description

[Detailed description of the invention] This invention combines and fixes a scintillation camera that detects radiation emitted from the affected area of a patient to whom a radioisotope has been administered and measures the distribution of the radioisotope with a device such as a bed or a collimator cart. The present invention relates to a fixation device.

Schematic configuration of the scintillation camera and the bed on which the patient lies, and the scintillation camera and the patient when measuring the distribution of radioisotope by detecting radiation, such as gamma rays, emitted from the affected area of the patient to whom radioisotope has been administered. The positional relationship with the bed on which to lie down is the first
As shown in FIG. That is, as shown in FIGS. 1 and 2, the scintillation camera 1 includes a scintillation detector 2 and a column 3 that supports the scintillation detector 2 in a vertically movable manner. A support base part 5 having a protrusion part 4 is provided so as to be opposed to the shock detector 2 . The bed 6 is movable in the X and Y directions by a drive device 7 and has a top plate 8 on which the patient lies, and legs 9 on which the top plate 8 is placed and which are movable by means of casters, for example.
It is equipped with. Before measuring the distribution of radioisotopes within the patient's body, a bed 6 is inserted between the scintillation detector 2 and the protrusion 4 so that the patient lying on his side is positioned. When measuring the whole body of a patient, as shown in FIG. 2, while moving the top plate 8 in the direction shown by the arrow A or B in the figure, the scintillation detector 2 measures each part of the patient's body in spots. Radioisotopes will be detected in the future. In this case, it is important to align the center axis of the scintillation detector 2 with the scan center axis of the bed 8 so that the radioisotope distribution image detected for each part of the patient's body does not deviate. It is. Therefore, the problem is the performance of the fixing device that connects and fixes the scintillation camera 1 and the bed 6.

Conventional fixing devices include those shown in FIGS. 3 to 5. The fixing device includes a locking part and a fixing part. As shown in FIGS. 3 and 4, the locking portion includes a pair of locking pieces 11 disposed on the tip surfaces of both wings of the T-shaped protrusion 4 of the scintillation camera 1. 11 is bent to have a short piece and a long piece and is formed into a substantially U-shape, and the long piece is, for example, a bolt 10.
When the scintillation camera 1 and the bed 6 are connected and fixed, the locking piece 1 is connected to the tip surface of both wing parts via the locking piece 1 as shown in FIG.
Wake up 1, scintillation camera 1 and bed 6
When not fixedly connected, the locking piece 11 can be laid down as shown in FIG. 4. On the other hand, as shown in FIGS. 1 and 5, the fixing portion 12 is attached to the lower surface of a horizontal support 13 that extends across both the left and right legs of the bed 6 so as to correspond to the pair of locking pieces 11. The fixed part 12 is
As shown in FIG. 5, an L-shaped locking piece 15 is attached to the lower surface of the horizontal support 13 and has a buffer member 14, such as a rubber pad, which acts as a buffer when coming into contact with the short piece of the locking piece 11. As shown in FIG. 1, a pair of L-shaped support pieces 16 are attached to the lower surface of the horizontal support 13 so as to face each other, and as shown in FIG. The short piece of the locking piece 11 and the L-shaped locking piece 15 are attached between the pieces 16 so as to be rotatable within a certain range by a pin 17, for example, and the elastic force of an elastic body, such as a spring 18, connects the short piece of the locking piece 11 and the L-shaped locking piece 15. It is equipped with a rectangular annular rotating frame 19 that can be rotated. As shown in FIG. 5, the scintillation camera 1 and the bed 6 are coupled and fixed by abutting the short piece of the locking piece 11 against the L-shaped locking piece 15 via the buffer member 14, and By rotating 19, the locking piece 11 and the L-shaped locking piece 15 are tightly connected by the rotating frame 19.

However, in the conventional fixing device, play occurs in the connection state between the locking piece 11 in the locking portion and the tip surfaces of both wing parts of the T-shaped protrusion 4, which causes the central axis of the scintillation detector 2 and the bed 6 The disadvantage is that it is not possible to accurately align the scan center axis of the Moreover, after the fixing part and the locking part are connected, fine adjustment cannot be made so that the center axis of the scintillation detector 2 and the scan center axis of the bed 6 are aligned accurately. Furthermore, since the locking pieces 11 are protruded from the tip surfaces of both wing parts of the T-shaped protrusion 4, when the bed 6 is not placed on the scintillation camera 1 as shown in FIG. There is a drawback that the locking portion is easily damaged when a foot is caught on the locking piece 11.

This idea was made in view of the above circumstances, and allows fine adjustment to be made so that the center axis of the scintillation detector and the scan center axis of the bed accurately match, and is less prone to wobbling due to the number of times it is used. Moreover, it is an object of the present invention to provide a fixing device that will not be damaged due to operator carelessness.

Next, one embodiment of this invention will be explained with reference to the drawings.

FIG. 6 is a schematic side view showing a state in which a bed and a scintillation camera are coupled and fixed by a fixing device which is an embodiment of the invention. In addition, the 6th
In the figures, the same numbers are given to the same members and parts as those shown in Figs. 1 to 5.

The fixing device includes a fixing part 12 attached to the lower surface of a horizontal support 13 horizontally placed on both the left and right legs of the bed 6;
It consists of a locking part 20 attached to the protruding part 4 of the scintillation camera 1. The fixing part 12 has the same structure as the fixing part in a conventional fixing device as shown in FIG. 5, so a description thereof will be omitted. A pair of locking portions 20 are arranged at a predetermined interval on the rear end surfaces of both wings of the T-shaped protrusion 4 of the scintillation camera 1. The locking portion 20 includes, for example, a plate-shaped L-shaped support member 2 whose one end is connected to the rear end surfaces of both wing portions via a hinge 21, and which rotates 90 degrees in the direction of arrow C in FIG.
2, and a plate-shaped L-shaped abutting member 23, for example, which can abut one end surface on the buffer member 14 fixed to the L-shaped support piece 15 in the fixed part 12.
and an adjustment member 24. Adjustment member 24
The left-hand thread 25 fixed to the other end of the L-shaped support member 22 and the right-handed thread 26 fixed to the other end of the L-shaped contact member 23 are arranged so that a right-hand thread and a left-hand thread are respectively cut inside both ends. They are configured to be screwed together with a nut 27.

Next, the operation of the fixing device having the above configuration will be explained. Since the locking portion 20 is configured as described above, for example, when the scintillation camera 1 is not operated, the L-shaped support member 22 is rotated in the direction of arrow C in FIG. 20 can be stored on the rear end sides of both wing parts of the T-shaped protrusion 4. Therefore, it is possible to eliminate the risk of the operator damaging the locking part 20 by pulling it against the foot, as in the case of conventional fixing devices. When the scintillation camera 1 and the bed 6 are to be coupled and fixed, the L-shaped support member 22 is rotated in the direction of arrow C in FIG.
The locking part 20 is set so that the part 3 is located in front of the tip surfaces of both wing parts of the T-shaped protrusion 4. and,
As shown in FIG. 1, the bed 6 is positioned directly below the scintillation detector 2 of the scintillation camera 1, and as shown in FIG. L to the buffer member 14
After the character-shaped contact member 23 is brought into contact, the rotating frame 19 is rotated to tightly connect the fixed portion 12 and the locking portion 20. In this case, if the center axis of the scintillation detector 2 and the scan center axis of the bed 6 are misaligned, the misalignment can be easily corrected by rotating the nut 27 in the adjustment member 24. Further, the parallelism between the center axis of the scintillation detector 2 and the scan center axis of the bed 6 can be made to match. In this way, once adjustment is made using the adjustment member 24, there is no need for centering thereafter, and the scintillation camera 1 and the bed 6 can be easily coupled and fixed. Furthermore, since the locking portions 20 are connected by the hinges 21, there will be no play in the installation even if the device is used many times.

Although one embodiment of this invention has been described in detail above, it goes without saying that this invention is not limited to the above-mentioned embodiment, and includes various modifications without changing the gist of this invention. .

In the embodiment described above, the protruding part 4 of the scintillation camera 1 is T-shaped, and the locking parts are arranged on the rear end surfaces of both wings of the T-shape. It is also possible for the protruding portion 4 to have a substantially rectangular parallelepiped shape, and in that case, the protruding portion 4 may be provided with a recessed portion 28 for accommodating the locking portion, as shown in FIG. Furthermore, in the embodiment described above, the scintillation camera and the bed were coupled and fixed, but this invention can also be applied to the coupling and fixation of the collimator truck and the scintillation camera. That is, by attaching the fixing part 12 as shown in FIG. 6 to the collimator carriage, the scintillation camera and the collimator carriage can be coupled and fixed. Therefore, it has become possible to easily position the collimator cart with respect to the scintillation camera. There is no need to adjust the position by slightly moving the cart, and the collimator can be easily installed and replaced.

As described above, according to this invention, the following effects can be achieved. That is, according to this invention, the locking part of the fixing device is housed so that it does not protrude beyond the tip of the protrusion that protrudes from the support part of the scintillation camera.
It is possible to eliminate the possibility that the operator will accidentally hit the locking part with his or her foot and damage the locking part. Furthermore, by connecting the scintillation camera and the bed using a fixing device, the center axis of the scintillation detector and the scan center axis of the bed can be aligned with high precision. When used for coupling with a truck, the collimator truck can be accurately positioned to the scintillation camera, and the collimator can be easily replaced. moreover,
Since the locking portions are connected by hinges, there is no looseness in the locking portions even if the locking portions are frequently used.

[Brief explanation of the drawing]

Figure 1 is a schematic perspective view showing a state in which a bed is placed on a scintillation camera, Figure 2 is a schematic top view showing a state in which a bed is placed in a scintillation camera, and Figures 3 to 5 are conventional fixing devices. 6 is a schematic side view showing a state in which a bed and a scintillation camera are coupled and fixed by a fixing device which is an embodiment of this invention, and FIG. 7 is a modification of this invention. FIG. DESCRIPTION OF SYMBOLS 1...Scintillation camera, 5...Support part, 12...Fixed part, 19...Rotation frame, 20...
Locking portion, 22...L-shaped support member, 23...L-shaped contact member, 24...adjustment member.

Claims (1)

[Scope of utility model registration request] A locking section is provided at multiple locations on the support base of the scintillation camera and has a locking piece whose tip is bent into an L-shape, and a locking section is provided on another device that is connected and fixed to the scintillation camera and is rotatable. A fixing device comprising a fixing part having a frame, and connecting and fixing the scintillation camera and the other device by fitting the rotation frame into the locking piece of the locking part, wherein the locking part includes: an L-shaped support member rotatably attached to the support base so as to be located in the empty space of the support base when the device is not connected and fixed, and to be located near the fixed portion of the other device when the device is connected and fixed; , L into which the rotating frame fits
A fixing device comprising a letter-shaped abutting member and an adjusting member that couples the L-shaped support member and the L-shaped abutment member and can adjust the coupling interval.