JP2012085900A - X-ray radioscopic photographing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an X-ray fluoroscopic apparatus provided with an FPD that is movable in the apparatus and detachable from the apparatus.
SOLUTION: The speed-copying part 5 has a box-shaped outer container in which four sides of a base plate 52 are surrounded by side walls, and a take-out port 51 that allows an FPD 54 to be attached to and detached from the speed-drawing part 5 on one side surface. Is provided. On the base plate 52, a tray 53 for placing the FPD 54 for X-ray imaging and a roller 61 for winding and supporting the cable 55 of the FPD 54 are disposed. In addition, a guide groove 57 is formed between the roller 62 and the roller 63 so that the guide roller 64 urged by the spring 56 is movably fitted. Between the roller 61 and the roller 62, a guide member 70 that is opened and closed by a hinge while the cable 55 is supported is disposed.
[Selection] Figure 5

Description

  The present invention relates to an X-ray fluoroscopic apparatus including a detachable X-ray flat panel detector.

  As an X-ray fluoroscopic apparatus, an X-ray tube that irradiates X-rays toward a patient who is a patient, and an X-ray fluoroscope that detects X-rays that are irradiated from the X-ray tube and pass through the subject. 2. Description of the Related Art An image intensifier (II) and a rapid imaging unit equipped with an imaging planar X-ray detector for obtaining a diagnostic image are known.

  In such a X-ray fluoroscopic imaging apparatus, a cassette including an X-ray film for detecting X-rays can be moved between an imaging position and a standby position, and the cassette can be attached to and detached from the apparatus. A so-called cassette type rapid-action device is employed (see Patent Document 1).

  Further, as a rapid photographing apparatus using a flat panel detector (FPD) as a planar X-ray detector for photographing, I.D. An apparatus having a mechanism for moving the FPD to the front of I to perform imaging and moving the FPD to a retracted position outside the X-ray irradiation field during fluoroscopy has been proposed (see Patent Document 2).

JP 2007-7251 A JP 2002-301052 A

  By the way, as FPD used for X-ray imaging, what converts incident X-rays into an electrical signal by a semiconductor conversion film such as an a-Se (amorphous selenium) film is typical. Unlike an X-ray film, such an FPD must be connected with a signal output cable for forming an X-ray image based on an electrical signal. Then, when the FPD is moved between the photographing position and the standby position or attached to or detached from the apparatus, the cable becomes an obstacle. For this reason, it is not possible to directly mount the FPD to which the cable is connected in place of the cassette in the cassette-type speed photographic device described in Patent Document 1.

  Further, even if the FPD is mounted on the rapid-motion device as in the rapid-motion device described in Patent Document 2, if the cable is wired on the outer surface of the device, the arrangement of peripheral devices such as the control device and the like can be reduced from the viewpoint of preventing disconnection of the cable. There has been a problem of restricting the operation of the practitioner. On the other hand, when a cable is provided in the apparatus, the FPD cannot be easily removed because the cable has a minimum cable length so that the cable does not hinder the movement of the FPD. For this reason, there is a single process of taking a picture with a position-type radiography stand that takes a picture while the subject is lying down and taking a picture with a stand-up type radiography stand that takes a picture with the subject standing. In the X-ray fluoroscopic imaging system controlled by the control unit, the FPD mounted on the rapid imaging apparatus of the standing position imaging table cannot be taken out and used for imaging on the standing imaging table.

  Further, when the FPD is detachably mounted in the apparatus, the position of the FPD in the apparatus is fixed so as not to move so as not to pull the cable connected to the FPD. The FPD that is fixedly arranged in this way has an I.D. Since it cannot be moved to the front of I, it cannot be used for high-speed shooting, and conversely, the fluoroscopic function cannot be used during shooting.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an X-ray fluoroscopic apparatus including an FPD that is movable in the apparatus and detachable from the apparatus.

  According to the first aspect of the present invention, an X-ray tube, a table on which a subject is placed, an X-ray which is disposed opposite to the X-ray tube and which is irradiated from the X-ray tube and passes through the subject. The X-ray detector for fluoroscopy to be detected and the X-ray irradiated from the X-ray tube and passed through the subject were moved from the standby position outside the X-ray irradiation field to the imaging position in front of the fluoroscopic X-ray detector. A fast-moving part that detects and shoots with a flat panel detector, and the fast-moving part includes an outer container in which one side of the flat panel detector is formed, and the flat panel detector connected to a cable. A tray horizontally moving in the outer container, a first winding body fixed to the opposite side of the outlet in the base plate of the outer container, and the outlet in the tray Is fixed on the opposite side A second winding body, a third winding body fixed in the vicinity of the mounting position of the flat panel detector in the tray, and disposed between the first winding body and the second winding body, A support member that supports the cable and deforms as the tray moves, and is formed in a direction orthogonal to the moving direction of the tray between the second and third winding bodies in the tray. When pulling out the flat panel detector from the guide slot, the fourth winding body that is fitted in the guide groove and is urged toward one end of the guide groove by connecting to the elastic member, The length of the cable wound from the flat panel detector in the order of the third wound body, the fourth wound body, the second wound body, and the first wound body, Move along the guide groove To together, characterized in that it comprises a drawer mechanism is the length of the cable is pulled out to fix the position of the volume 4 times body when a length required, a.

  According to a second aspect of the present invention, in the first aspect of the invention, the third wound body and the fourth wound body rotate.

  According to a third aspect of the present invention, in the first aspect of the present invention, the elastic member is a spring, and the drawer mechanism has a ratchet mechanism.

  The invention according to claim 4 is the invention according to claim 1, wherein the support member is a plurality of plate members connected by hinges.

  According to the first aspect of the present invention, the support member that supports the cable and deforms as the tray moves is provided, and the first winding body, the second winding body, the fourth winding body, and the third winding body. Since the cable is compactly accommodated in the rapid-motion section by being wound around the rotating body, the cable does not become an obstacle to the movement of the tray. From fluoroscopy by I to FPD, from FPD to I. Transition to fluoroscopy with I can be performed smoothly. Further, extra wiring is not exposed to the outside, and workability around the device can be improved. Further, the cable connected between the FPD and the FPD taken out from the fast-moving portion is adjusted by adjusting the cable length between the second and third winding bodies by a drawing mechanism that moves the fourth winding body along the guide groove. For example, the taken FPD can be adjusted to a length necessary for mounting on another standing-type bucky stand or the like and using it for photographing. For this reason, it is possible to use the FPD as an X-ray detector for imaging even in other imaging stations without causing extra wiring to go outside and causing the cables to become tangled.

  According to the second aspect of the present invention, when the third winding body and the fourth winding body rotate, the cable length changes as the fourth winding body moves along the guide groove. The cable can be bent, and the load on the cable when the FPD is taken out from the fast-moving portion can be reduced, and the FPD can be smoothly placed and taken out from the table.

  According to the third aspect of the present invention, it is possible to easily adjust the length of the cable when the FPD is taken out from the fast-moving portion by the spring and the ratchet mechanism with a simple configuration.

  According to the invention described in claim 4, since the cable is supported by a plurality of hinge-connected plate members, the cable can be easily expanded and contracted with the movement of the tray without the cable being entangled by opening and closing the hinge. Can do.

1 is a schematic diagram of an X-ray fluoroscopic apparatus according to the present invention. FIG. 6 is a plan view of the rapid shooting unit 5 when the FPD 54 is in a standby position. FIG. 5 is a plan view of the rapid shooting unit 5 when the FPD 54 is moved to a shooting position. 4 is a perspective view showing a guide member 70 together with a cable 55. FIG. FIG. 6 is a plan view of the rapid shooting unit 5 when the FPD 54 is pulled out. FIG. 2 is a schematic diagram of a standing-type imaging stand that is used with the FPD 54 taken out from the fluoroscopic imaging apparatus shown in FIG.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram of an X-ray fluoroscopic apparatus according to the present invention.

  This X-ray fluoroscopic imaging apparatus includes an X-ray tube 3, a table 11 on which a subject 1 is placed, and X-ray detection for fluoroscopy that detects X-rays irradiated from the X-ray tube 3 and passing through the subject 1. As a container. I2 and a rapid photographing unit 5 equipped with an FPD 54 which is an X-ray detector for imaging.

  The X-ray tube 3 is supported above the table 11 by a column 8. And I.I. I2 is disposed at a position facing the X-ray tube 3 with the table 11 in between. The output image of I2 is picked up and collected by the TV camera 4 equipped with a CCD element.

  The rapid-shooting unit 5 has a box-shaped outer container 59 whose bottom surface is a base plate 52 described later, and is disposed on the back surface of the table 11. An FPD 54, which is an X-ray detector for imaging, enters the standby position retracted from the X-ray irradiation field indicated by a solid line in FIG. 1 and the X-ray irradiation field indicated by a virtual line in FIG. I. It is mounted so as to be movable between the photographing positions on the front surface of I2. An FPD 54 is attachable to and detachable from the fast-moving unit 5 and is provided on the side surface on the left hand side as viewed in FIG.

  Next, the movement operation of the FPD 54 in the rapid photographing unit 5 will be described. FIG. 2 is a plan view of the speed-taking section 5 when the FPD 54 is in the standby position, FIG. 3 is a plan view of the speed-taking section 5 when the FPD 54 is moved to the shooting position, and FIG. It is a perspective view shown.

  A tray 53 for placing the FPD 54 and a roller 61 as a first winding body that winds and supports the cable 55 of the FPD 54 are disposed on the base plate 52 of the rapid-shooting unit 5. The tray 53 is configured to be horizontally movable along a guide rail (not shown) between a standby position shown in FIG. 2 and a photographing position closer to the take-out port 51 shown in FIG. 3 by driving a motor (not shown). Yes. Therefore, the FPD 54 can move between the standby position and the photographing position by moving the tray 53. Further, the roller 61 is fixed at a back angle on the base plate 52 which is the opposite side of the take-out port 51.

  The tray 53 is provided with a roller 62 as a second winding body and a roller 63 as a third winding body that winds and supports the cable 55. The roller 62 is fixed at a position that is a back angle as viewed from the side of the take-out port 51 on the tray 53 and is on the same straight line in the longitudinal direction of the roller 61 fixed on the base plate 52 and in the longitudinal direction. On the other hand, the roller 63 is a position that is separated from the roller 62 by a predetermined distance, and, like the roller 62, is a position that is on the same straight line in the longitudinal direction of the roller 61 fixed on the base plate 52 and the fast-moving portion 5. Fixed to.

  Between the roller 62 and the roller 63 fixed to the tray 53, a guide groove 57 for movably fitting the cable roller 64 as the fourth winding body extends in a direction orthogonal to the moving direction of the tray 53. Is formed. One end of a spring 56, which is an elastic member, is fixed at the back corner of the tray 53 opposite to the corner where the roller 62 is fixed, and the other end of the spring 56 is connected to a cable roller 64. . The spring 56 is for urging the cable roller 64 toward one end of the guide groove 57 that is opposite to the position where the roller 62 and the roller 63 are fixed on the tray 53. The guide groove 57, the cable roller 64, and the spring 56 constitute an FPD 54 take-out mechanism described later.

  Between the roller 61 fixed to the base plate 52 and the roller 62 fixed to the tray 53, a guide member 70 whose shape changes while the cable 55 is supported is disposed. As shown in FIG. 4, the guide member 70 has two plate members 71 connected by a hinge 72, and the cable 55 is locked by a fixing member 73 along the inner wall of the plate member 71.

  The cable 55 of the FPD 54 placed on the tray 53 is wound around a roller 63, a cable roller 64, and a roller 62, and is further wound around a roller 61 via a guide member 70 so as to be outside the time-lapse unit 5. It is connected to a control unit (not shown) to be installed. As shown in FIG. 2, when the tray 53 is in the standby position, the cable 55 is engaged and supported in a meandering manner by the roller 63, the cable roller 64, the roller 62, the guide member 70, and the roller 61. It is housed in a back space opposite to the mouth 51.

  When the tray 53 on which the FPD 54 is placed is moved to the photographing position, as shown in FIG. 3, the angle between the two plate members 71 with the hinge 72 as a base point is greatly opened as the tray 53 moves. Since the cable 55 runs along the plate member 71, the deformation of the plate member 71 by the hinge 72, that is, the two plate members 71 when the tray 53 on which the FPD 54 is placed moves to the standby position and the photographing position. Depending on the opening / closing operation, the cable length from the roller 61 to the roller 62 via the guide member 70 does not change. As shown in FIG. 2, when the tray 53 on which the FPD 54 is placed moves to the standby position, the cable 55 is stored again compactly without being entangled by the folding deformation of the plate member 71.

  With such a configuration, the cable 55 does not obstruct the movement of the tray 53, that is, the obstruction of the movement of the FPD 54, and does not cause a problem of poor connection due to an unnecessary load such as pulling on the cable 55. . In this embodiment, the number of the plate members 71 that support the cable 55 is two. However, by increasing the number of the plate members 71, the length in the longitudinal direction of the rapid photographing unit 5, that is, the FPD 54 to which the tray 53 should be moved. It is also possible to cope with a case where the moving distance to the shooting position becomes longer. Further, the fixing position of the roller 61 is appropriately changed depending on the number of the plate members 71, the length of the plate member 71, and the like.

  Next, the removal of the FPD 54 from the rapid shooting unit 5 will be described. FIG. 5 is a plan view of the speed-taking unit 5 when the FPD 54 is pulled out.

  After the tray 53 on which the FPD 54 is placed is moved to a position close to the take-out port 51, when the FPD 54 is taken out from the take-out port 51 to the outside of the rapid photographing unit 5, the cable 55 needs to be extended along with the movement of the FPD 54. In this embodiment, the extension of the cable 55 is adjusted by the take-out mechanism. That is, the length of the portion of the cable 55 wound from the roller 62 via the cable roller 64 to the roller 63 is shortened by the sliding movement of the cable roller 64 in the guide groove 57, so that the FPD 54 can be The cable length that is pulled out is obtained.

  Due to the pulling force of the cable 55 accompanying the removal of the FPD 54, the cable roller 64 moves in the guide groove 57 from the side biased by the spring 56 toward the side where the rollers 62 and 63 are disposed. Along with this, the cable 55 also moves, and the cable length of the portion that is wound around the roller 63 from the roller 62 via the cable roller 64 is shortened. At this time, the cable 55 smoothly moves without being given friction due to the movement of the cable roller 64 and the roller 63.

  Further, the guide groove 57 is provided with teeth that engage with a claw (not shown) disposed at the lower end of the cable roller 64, and the cable moved when the cable 55 is pulled out by a necessary length. The position of the roller 64 in the guide groove 57 can be fixed by a Lachat mechanism. When the FPD 54 is placed on the tray 53 and the meshing between the teeth provided in the guide groove 57 and the claws provided at the lower end of the cable roller 64 is released, the cable roller 64 is biased by the biasing force of the spring 56. However, the cable 55 returns to one end of the guide groove 57 where the cable length of the portion wound around the roller 63 via the cable roller 64 from the roller 62 becomes the longest, and the cable 55 is connected to the roller 62 on the tray 53, the cable roller 64, the roller. It is stored in a state wound around 63.

  The above-described FPD 54 that can be taken out from the rapid photographing unit 5 is taken out from the X-ray fluoroscopic apparatus shown in FIG. 1 and can be used by being mounted on an X-ray detecting part of another X-ray imaging apparatus such as a bucky stand. FIG. 6 is a schematic view of a standing-type imaging table that is used by mounting the FPD 54 taken out from the fluoroscopic imaging apparatus shown in FIG.

  The standing-type imaging table supports the X-ray detection unit 20 movably on a support column 9 that is suspended on the base 10, so that the subject 1 resting on the base 10 in a standing posture. On the other hand, imaging is performed by irradiating X-rays from an X-ray tube 3 disposed opposite to the X-ray detection unit 20 by a ceiling suspension moving mechanism (not shown). The FPD 54 taken out from the X-ray fluoroscopic apparatus shown in FIG. 1 is attached to the X-ray detection unit 20 and can be used as a planar X-ray detector of this standing type imaging table.

  At this time, the cable 55 of the FPD 54 is connected to the control unit of the X-ray fluoroscopic apparatus shown in FIG. 1 through the speed-taking unit 5 of the X-ray fluoroscopic apparatus shown in FIG. For this reason, even if this standing type imaging stand is normally configured to use an X-ray film for X-ray detection and does not have a system for processing the output signal of the FPD 54 as an X-ray image, An image captured by the FPD 54 can be obtained using the control unit of the fluoroscopic imaging apparatus.

1 Subject 2 I. I
3 X-ray tube 5 High-speed part 11 Table 51 Outlet 53 Tray 54 FPD
55 Cable 56 Spring 57 Guide groove 61 Roller 62 Roller 63 Roller 64 Guide roller 70 Guide member 71 Plate member 72 Hinge

Claims (4)

An X-ray tube;
A table on which the subject is placed;
A fluoroscopic X-ray detector that is disposed opposite to the X-ray tube and detects X-rays irradiated from the X-ray tube and passing through the subject;
Imaging is performed by detecting X-rays irradiated from the X-ray tube and passing through the subject with a flat panel detector moved from a standby position outside the X-ray irradiation field to an imaging position in front of the fluoroscopic X-ray detector. A rapid-shooter,
With
The rapid-shooting part is
An outer container in which a flat panel detector outlet is formed on one side;
A tray on which the flat panel detector connected to a cable is placed and horizontally moved in the outer container;
A first winding body fixed on the side opposite to the outlet in the base plate of the outer container;
A second winding body fixed to the side opposite to the outlet in the tray;
A third winding body fixed in the vicinity of the mounting position of the flat panel detector in the tray;
A support member disposed between the first winding body and the second winding body, supporting the cable and deforming as the tray moves;
A guide groove formed in a direction perpendicular to the moving direction of the tray between the second wound body and the third wound body in the tray;
A fourth wound body fitted into the guide groove and biased toward one end of the guide groove by connecting to an elastic member;
The cable wound around the flat panel detector in the order of the third wound body, the fourth wound body, the second wound body, and the first wound body when the flat panel detector is pulled out from the outlet. The length of the fourth winding body is adjusted by moving the fourth winding body along the guide groove, and the position of the fourth winding body is adjusted when the length of the pulled-out cable becomes a required length. A drawer mechanism to be fixed;
An X-ray fluoroscopic apparatus comprising: The X-ray fluoroscopic apparatus according to claim 1,
The third winding body and the fourth winding body are X-ray fluoroscopic imaging apparatuses that rotate. The X-ray fluoroscopic apparatus according to claim 1,
The elastic member is a spring;
The drawer mechanism is an X-ray fluoroscopic apparatus having a ratchet mechanism. The X-ray fluoroscopic apparatus according to claim 1,
The X-ray fluoroscopic apparatus, wherein the support member is a plurality of plate members connected by hinges.

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