JP2021166633A - X-ray diagnostic apparatus - Google Patents

Abstract

To wind a cable of an X-ray generator and a cable of an X-ray detector around different drums at different revolving speed.SOLUTION: An X-ray diagnostic apparatus comprises a first support mechanism and a speed reduction mechanism. The first support mechanism has ends at which an X-ray generator and an X-ray detector are supported integrally so that the X-ray generator and the X-ray detector face each other and has a frame including a first cable having one end connected to the X-ray generator and a second cable having one end connected to the X-ray detector. The speed reduction mechanism has a first drum and a second drum. The first cable is wound around the first drum; depending on its rotation, the first drum takes up or sends off the first cable. The second drum rotates in conjunction with the first drum; the second cable is wound around the second drum so as to send off the second cable when the first cable is wound up and so as to take up the second cable when the first cable is sent off. The speed reduction mechanism transfers rotation of one of the first drum and the second drum to the other so that the second drum rotates at rotation speed obtained by multiplying rotation speed of the first drum by a predetermined speed ratio.SELECTED DRAWING: Figure 2

Description

Embodiments of the present invention relate to an X-ray diagnostic apparatus.

In recent years, X-ray diagnosis has made progress mainly in the cardiovascular field with the development of catheter procedures. For example, an X-ray diagnostic device for cardiovascular diagnostics generally has an X-ray generator, an X-ray detector, and a C-arm or Ω-arm that supports them so as to face each other.

By moving the C-arm or Ω-arm around the subject, X-rays can be taken at various positions. For example, some C-arms and Ω-arms can move in both directions along the arc. However, the X-ray generator and the X-ray detector generally transmit signals to the processing device via cables, respectively. Therefore, in order to realize the arc motion, it is necessary to have a margin in the cable length according to the movement amount (stroke) of the arc motion.

The extra length of this type of cable may be bundled with a duct hose or the like and hang down from the outside of the housing of the C arm or the Ω arm. In this case, since the C-arm is movable, a person (hereinafter referred to as an obstacle) including a member or a subject located in the vicinity of the C-arm may interfere with the extra length of the cable. For this reason, the movable range of the device is limited, and the user must be careful to avoid interference, so that the operability is deteriorated and the work efficiency is significantly lowered.

Japanese Unexamined Patent Publication No. 2001-278541

The problem to be solved by the present invention is to wind the cable of the X-ray generator and the cable of the X-ray detector on different winding cylinders at different rotation speeds.

The X-ray diagnostic apparatus according to the embodiment includes a first support mechanism and a deceleration mechanism. The first support mechanism has a housing having an arc shape, integrally supports an X-ray generator and an X-ray detector at each end so as to face each other, and one end is connected to the X-ray generator. The first cable and the second cable having one end connected to the X-ray detector are included in the housing. The speed reduction mechanism has a first winding cylinder and a second winding cylinder. In the first winding cylinder, the first cable is wound, and the first cable is wound or sent out according to the rotation. The second winding cylinder rotates in conjunction with the first winding cylinder, and when the first cable is wound, the second cable is sent out, and when the first cable is sent out, the second cable is wound up. 2 Cable is wound. The speed reduction mechanism transmits the rotation of one of the first winding cylinder and the second winding cylinder to the other so that the second winding cylinder rotates at a rotation speed obtained by multiplying the rotation speed of the first winding cylinder by a predetermined speed ratio.

The conceptual block diagram which shows an example of the X-ray diagnostic apparatus which concerns on embodiment. The schematic block diagram which shows an example of a holding device. Explanatory drawing which shows an example of how to handle the extra length of a conventional cable. Explanatory drawing which shows another example of how to handle the extra length of a conventional cable. The explanatory view which shows an example of the deceleration mechanism which concerns on this embodiment. The figure for demonstrating the structure of the reduction mechanism shown in FIG. (A) is a diagram for explaining an example of the winding direction of the detector cable and the generator cable when the detector drum and the generator drum rotate in the same direction, and (b) is a diagram for explaining an example of the winding direction of the detector drum and the generator drum. The figure for demonstrating an example of the winding direction of a detector cable and a generator cable in the case of rotating in the opposite direction. Explanatory drawing which shows an example of the angle from the extraction position to the X-ray detector in the standard position, and the angle from the extraction position to the X-ray generator. (A) is an explanatory diagram showing an example of the stroke of the X-ray detector at the position where the X-ray detector is farthest from the stand than the standard position, and (b) is an explanatory diagram showing an example of the stroke of the X-ray detector at the position where the X-ray detector is farthest from the stand than the standard position. Explanatory drawing which shows an example of the stroke of the X-ray generator at the position. (A) is an example of the winding direction of the detector cable and the generator cable when the detector drum and the generator drum of different diameters are provided coaxially and the detector drum and the generator drum rotate in the same direction. A diagram for explaining, (b) is a diagram for explaining an example of the winding direction of the detector cable and the generator cable when the detector drum and the generator drum rotate in opposite directions, and (c) is for the detector. The figure for demonstrating an example of a reduction mechanism when a drum and a drum for a generator are coaxial.

Hereinafter, embodiments of the X-ray diagnostic apparatus will be described in detail with reference to the drawings.

FIG. 1 is a conceptual configuration diagram showing an example of the X-ray diagnostic apparatus 10 according to the embodiment. Further, FIG. 2 is a schematic configuration diagram showing an example of the holding device 15.

In this embodiment, an example of using an X-ray angio device having a C-arm as the X-ray diagnostic device 10 is shown. However, the X-ray diagnostic apparatus 10 is not limited to a single-plane X-ray angio apparatus having a C-arm. The X-ray diagnostic apparatus 10 may be, for example, a biplane type including a C arm and an Ω arm.

Here, as an example, the device coordinate system of the X-ray diagnostic device 10 is defined as shown in FIG. That is, the vertical direction is the y-axis direction, the direction in which the C-arm 14 is viewed horizontally from the stand 17 is the z-axis direction, and the direction perpendicular to both the y-axis direction and the z-axis direction is the x-axis direction.

As shown in FIG. 1, the X-ray diagnostic apparatus 10 includes an X-ray imaging system 11, a sleeper apparatus 20, a display 31, a console 32, and an image processing apparatus 33.

The X-ray imaging system 11 includes an X-ray detector 12, an X-ray generator 13, a C-arm 14, and a holding device 15. The sleeper device 20 has a sleeper 21 and a top plate 22.

The X-ray detector 12 is provided at one end of the C arm 14 so as to be arranged so as to face the X-ray generator 13 with the subject supported by the top plate (for example, a catheter table or the like) 22 interposed therebetween. The X-ray detector 12 is composed of a plane detector (FPD: flat panel detector) having a plurality of X-ray detection elements arranged in two dimensions, and is irradiated to the X-ray detector 12 through a subject. X-rays are detected, and image data such as fluoroscopic data and simple radiographic data generated by X-ray imaging based on the detected X-rays is given to the console 32. The X-ray detector 12 may include an image intensifier, a TV camera, or the like, or is an X-ray detection element composed of a semiconductor element that accumulates a signal charge according to the amount of X-ray incident. It may be a CMOS-FPD having a plurality of CMOS-FPDs.

The X-ray generator 13 is provided at the other end of the C-arm 14 and has an X-ray tube and an X-ray diaphragm. The X-ray diaphragm is, for example, an X-ray movable diaphragm composed of a plurality of lead blades. The X-ray movable diaphragm is controlled by the console 32 to adjust the irradiation range of X-rays emitted from the X-ray tube.

The C-arm 14 integrally holds the X-ray detector 12 and the X-ray generator 13. The C arm 14 is held by the holding device 15. The C arm 14 is an example of the first support mechanism.

As shown in FIG. 2, the holding device 15 has a C-arm support mechanism 16 and a stand 17.

The C-arm support mechanism 16 slidably supports the C-arm 14 along its arc direction CF. Further, the C-arm support mechanism 16 rotatably supports the C-arm 14 with respect to the stand 17 about the z-axis center.

Specifically, the C-arm support mechanism 16 has an arc motion mechanism 16a and a deceleration mechanism 16b. The C-arm support mechanism 16 is an example of the second support mechanism.

Further, a rail (not shown) is provided on the back surface or the side surface of the C arm 14. The C-arm 14 moves in an arc along the arc-direction CF of the C-arm 14 via the rail sandwiched between the C-arm support mechanism 16 and the C-arm 14.

The arc movement mechanism 16a has a motor controlled by the console 32 to move the C arm 14 in an arc direction by sliding it along the CF in the arc direction. That is, the arc motion mechanism 16a is a mechanism for electrically sliding the C arm 14 in the arc direction CF. The arc motion mechanism 16a is an example of a drive mechanism.

The configuration and operation of the deceleration mechanism 16b will be described later with reference to FIG. 5-10. The deceleration mechanism 16b may be included in the housing of the C-arm support mechanism 16. By accommodating the deceleration mechanism 16b in the housing of the C-arm support mechanism 16, it is possible to realize cableless appearance of the device.

When the holding device 15 is controlled and driven by the console 32, the X-ray detector 12 and the X-ray generator 13 move together around the subject.

The stand 17 is installed on the floor surface and supports the C-arm support mechanism 16 with respect to the floor surface. Further, the stand 17 is installed on the floor surface so as to be rotatable on the y-axis on the installation surface.

When the X-ray diagnostic apparatus 10 is used as an X-ray angio apparatus, the X-ray diagnostic apparatus 10 may be a biplane type having two X-ray imaging systems 11. In the case of the biplane type, the X-ray diagnostic apparatus 10 individually irradiates the X-ray beam from two directions, the F (Frontal) side having the floor-standing C arm and the L (Lateral) side having the ceiling traveling type Ω arm. The biplane image (F side image and L side image) can be acquired.

When a ceiling traveling type Ω arm is used, the holding device 15 has a suspension arm that supports the C arm support mechanism 16 with respect to the ceiling instead of the stand 17. In this case, the suspension arm is installed on the bogie so as to be rotatable on the y-axis on the installation surface on the bogie traveling on the ceiling rail. The stand 17 and the suspension arm are examples of the third support mechanism.

The bed 21 of the bed device 20 is installed on the floor and has a top plate 22. The bed 21 is controlled by the console 32 to move or rotate (roll) the top plate 22 in the horizontal direction and the vertical direction.

The display 31 is composed of one or a plurality of display areas, and is controlled by the console 32 to display an X-ray image or the like. The display 31 is composed of a general display output device such as a liquid crystal display or an OLED (Organic Light Emitting Diode) display. The display 31 is suspended from the ceiling rail via a trolley so as to be movable along the ceiling rail, for example. The display 31 can be an obstacle to the movement of the C-arm 14.

The console 32 has an input interface, a display, a storage circuit, and a processor. The input interface consists of general pointing devices such as joysticks, trackballs, trackball mice, keyboards, touch panels, and ten keys, and hand switches for instructing the timing of X-ray exposure. Give the corresponding operation signal to the processor. The display is composed of a general display output device such as a liquid crystal display or an OLED (Organic Light Emitting Diode) display, and displays various information under the control of a processor.

The storage circuit has a configuration including a recording medium that can be read by a processor, such as a magnetic or optical recording medium or a semiconductor memory, and a part or all of the programs and data in these storage media are transmitted via an electronic network. It may be configured to be downloaded. The processor comprehensively controls the X-ray imaging system 11 including the arc motion mechanism 16a and the sleeper device 20 by reading and executing the program stored in the storage circuit 23.

The console 32 may be, for example, a satellite console that can be moved on the floor surface of the examination room. The console 32 can be an obstacle to the movement of the C-arm 14.

The image processing device 33 includes an input interface, a display, a storage circuit, and a processor. Since these configurations are the same as the configurations of the console 32, the description thereof will be omitted. The image processing device 33 is installed in, for example, an operation room adjacent to an examination room, and can generate and display a reconstructed image based on projection data.

Here, the handling of the extra length of the cable of the conventional C arm 14 will be briefly described.

FIG. 3 is an explanatory diagram showing an example of how to handle the extra length of the conventional cable. FIG. 3 shows a view looking down from the ceiling.

As described above, the C-arm 14 can be moved in both directions along the arc by the arc-moving mechanism 16a. Therefore, in order to cope with the change in the length of the cable that occurs in response to the arc motion, a margin is provided in the cable length according to the movement amount (stroke) of the arc motion.

As shown in FIG. 3, as one of the conventional methods for handling the extra length of the cable, there is a method of bundling the extra length of the cable with a duct hose DH and letting it crawl outside the housing of the C arm or the Ω arm. .. However, in this method, the duct hose DH interferes with surrounding obstacles when the C arm moves. Obstacles to the movement of the C-arm 14 include an operator, a subject, and peripheral members located in the vicinity of, for example, an X-ray imaging system 11 and a bed device 20. Examples of peripheral members include cables, injectors for injecting contrast media, anesthesia equipment, drip stands, displays 31 suspended from the ceiling, consoles 32, and the like.

For this reason, in the method of bundling the extra length of the cable with the duct hose DH, the movable range of the device is limited, and the user must be careful to avoid interference, which deteriorates the operability and greatly improves the work efficiency. It will drop.

FIG. 4 is an explanatory diagram showing another example of how to handle the extra length of the conventional cable.

As shown in FIG. 4, as another method for handling the extra length of the conventional cable, a winding portion 100 is provided between the C arm 14 and the stand 17, and the extra length of the cable is accommodated in the winding portion 100. There is. Specifically, the take-up unit 100 has a detector drum 141 and a generator drum 151. The detector cable 142 having one end connected to the X-ray detector 12 is wound around the detector drum 141, and the generator cable 152 having one end connected to the X-ray generator 13 is wound around the generator drum 151. As shown in FIG. 4, the detector drum 141 and the generator drum 151 have a horizontal coaxial rotation axis and are fixed to each other with the same diameter. Therefore, the detector drum 141 and the generator drum 151 rotate in the same direction. Therefore, by rewinding the detector cable 142 and the generator cable 152, the winding and feeding are reversed.

As shown in FIGS. 1 and 2, the position where the X-ray detector 12 and the X-ray generator 13 face each other along the y-axis is set as the standard position. At this time, when the C-arm 14 moves in an arc in a direction in which the X-ray detector 12 moves away from the stand 17 from the standard position, tension is generated in the detector cable 142 connected to the X-ray detector 12 at one end, and the X-ray detector 12 is used for the detector. The detector drum 141 rotates in the direction in which the cable 142 is sent out.

Along with this rotation, the generator drum 151, which is fixed coaxially with the detector drum 141, rotates in the same direction. By reversing the detector cable 142 and the generator cable 152, the generator cable 152 is wound around the generator drum 151 with this rotation. When the C-arm 14 makes an arc in the direction in which the X-ray detector 12 moves away from the standard position, the X-ray generator 13 approaches the stand 17 from the standard position. The deflection of the generator cable 152 generated at this time can be wound around the generator drum 151. Further, since the detector drum 141 and the generator drum 151 have the same diameter, the rotation diameters are also the same. Therefore, the winding length of one and the sending length of the other can be made substantially the same length.

However, assuming that the rotation axes of the detector drum 141 and the generator drum 151 are horizontally coaxial and have the same diameter. The width of the take-up portion 100 in the orthogonal direction (x-axis direction) of the rotating surface of the C-arm 14 becomes large, which increases the size of the apparatus and the width (height) of the take-up portion 100 in the z-axis direction is x. It becomes uniform in the axial direction, and the degree of freedom in arranging the surrounding obstacles is reduced.

Further, since the winding length of one of the detector cable 142 and the generator cable 152 and the sending length of the other are almost the same, the cable take-out position is set to be near the center of the C arm 14, and the detector drum 141 and the cable are taken out. The generator drum 151 will also be provided in the vicinity thereof. However, a member such as an arc motion mechanism 16a is arranged near the center of the C arm 14. Therefore, if the detector drum 141 and the generator drum 151 are provided near the center of the C arm 14, the stand 17 must be retracted rearward in the z-axis direction, and the width of the device in the z-axis direction is expanded to a large size. The size of the room in which the device is installed is also required.

Therefore, the X-ray diagnostic apparatus 10 according to the present embodiment eliminates the need for the duct hose DH by winding the extra length of the cable, and rotates the detector drum (winding cylinder) and the generator drum (winding cylinder). It is provided with a deceleration mechanism 16b that makes the rotation speed different while interlocking. By using the speed reduction mechanism 16b, it is possible to make the detector drum and the generator drum different in diameter and reduce the size of one of them, and the position of the cable outlet can be changed.

Next, the configuration and operation of the deceleration mechanism 16b will be described with reference to FIGS. 5-10.

FIG. 5 is an explanatory diagram showing an example of the speed reduction mechanism 16b according to the present embodiment. Further, FIG. 6 is a diagram for explaining the configuration of the speed reduction mechanism 16b shown in FIG. Hereinafter, the illustration of the housing of the C-arm support mechanism 16 will be omitted. The broken line X in FIG. 5 is a virtual line connecting the center of the image receiving surface of the X-ray detector 12 and the X-ray focal point of the X-ray generator 13.

In the example shown in FIG. 5, the deceleration mechanism 16b has a detector drum 41 and a generator drum 51, and the detector cable 42 having one end connected to the X-ray detector 12 is wound around the detector drum 41 to generate the generator. The generator cable 52 whose one end is connected to the X-ray generator 13 is wound around the dexterous drum 51. The detector cable 42 and the generator cable 52 are included in the housing of the C arm 14, and are taken out from the C arm 14 at the take-out position 18.

FIG. 7A is a diagram for explaining an example of the winding direction of the detector cable 42 and the generator cable 52 when the detector drum 41 and the generator drum 51 rotate in the same direction, and FIG. 7B is a diagram. It is a figure for demonstrating an example of the winding direction of a detector cable 42 and a generator cable 52 when a detector drum 41 and a generator drum 51 rotate in opposite directions.

In the detector drum 41, the detector cable 42 is wound, and the detector cable 42 is wound or sent out according to the rotation. The generator drum 51 rotates in conjunction with the detector drum 41, and when the detector cable 42 is wound, the generator cable 52 is sent out, and when the detector cable 42 is sent out, the generator cable 52 is wound. The generator cable 52 is wound so as to be taken (see FIGS. 7 (a) and 7 (b)).

The speed reduction mechanism 16b transmits the rotation of one of the detector drum 41 and the generator drum 51 to the other so that the generator drum 51 rotates at a rotation speed obtained by multiplying the rotation speed of the detector drum 41 by a predetermined speed ratio. .. Therefore, for example, in the example shown in FIG. 5, the speed reduction mechanism 16b further includes a detector pulley 43, a generator pulley 53, and a belt 61 connecting them. The belt 61 may be a chain.

The rotation shafts of the detector pulley 43 and the generator pulley 53 are provided coaxially with the rotation shafts of the detector drum 41 and the generator drum 51, respectively. The size of the detector pulley 43 and the generator pulley 53 is set according to the speed ratio of the detector drum 41 and the generator drum 51. Further, the detector drum 41 and the generator drum 51 are preferably provided at positions where at least a part of the drum 41 for the detector and the drum 51 for the generator overlap each other in the device plan view (viewpoint viewed from the upper side in the y-axis direction) while the rotation axis is horizontal.

The speed ratio between the detector drum 41 and the generator drum 51 may be determined according to the desired diameter ratio between the detector drum 41 and the generator drum 51, and the detector cable 42 and the generator cable 52 are C. It may be determined based on the take-out position 18 taken out from the arm 14, the maximum movement amount in one direction along the arc direction CF, and the maximum movement amount in the other direction, or based on a combination thereof. It may be determined.

As shown in FIGS. 5 and 6, when the detector drum 41 and the generator drum 51 are provided at positions where at least a part of them overlap each other in the plan view of the device so that the rotation axes are coaxially arranged as shown in FIG. In comparison, the width of the reduction mechanism 16b in the x-axis direction can be significantly reduced. Further, the detector drum 41 and the generator drum 51 can be arranged in the upper and lower dead spaces between the C arm 14 and the stand 17, respectively. Therefore, it is not necessary to retract the stand 17 to the rear in the z-axis direction, or the retracting width can be significantly reduced, and it is possible to prevent the device from becoming large while eliminating the need for the duct hose DH.

Further, by using the speed reduction mechanism 16b, the speed ratio of the speed reduction mechanism 16b can be made different between the detector drum 41 and the generator drum 51. Therefore, according to the speed reduction mechanism 16b, the take-out position 18 can be changed because the take-up length of one of the detector cable 42 and the generator cable 52 and the take-out length of the other can be made different. Therefore, the take-out position 18 can be set according to the position of the dead space.

Further, instead of the pulleys 43, 53 and the belt 61, a gear having a number of teeth according to the speed ratio may be used. In this case, the rotation directions of the detector drum 41 and the generator drum 51 are the same or opposite depending on the number of gears used. Therefore, the winding directions of the detector cable 42 and the generator cable 52 are changed accordingly. You should change it. In addition, as a configuration of the reduction mechanism 16b that gives a speed ratio between the rotation speed of the detector drum 41 and the rotation speed of the generator drum 51, various conventional ones such as a planetary gear reducer (cyclo speed reducer, etc.) are known. Any of these can be used.

Here, the relationship between the amount of movement (slide stroke) of the C arm 14 in the circumferential direction and the required cable winding length will be described with reference to FIGS. 8 and 9.

FIG. 8 is an explanatory diagram showing an example of an angle θ1 from the extraction position 18 to the X-ray detector 12 and an angle θ2 from the extraction position 18 to the X-ray generator 13 at the standard position. FIG. 9A is an explanatory diagram showing an example of the stroke θ3 of the X-ray detector 12 at the position where the X-ray detector 12 is farthest from the stand 17 than the standard position, and FIG. 9B is an explanatory diagram showing an example of the stroke θ3 of the X-ray detector 12. Is an explanatory view showing an example of the stroke θ4 of the X-ray generator 13 at the position farthest from the stand 17 than the standard position.

In FIGS. 8 and 9, the reduction ratio is assumed to be 1 for the sake of simplicity.

In this case, the winding length of the cable needs to be the same for the detector cable 42 and the generator cable 52. Therefore, θ1 and θ2 are equal (θ1 = θ2). Further, considering the cable winding length including the operation stroke, the relationship of θ1 + θ2 = θ3 + θ4 is established. Therefore, when the slide stroke is θ3 = 106 degrees and θ4 = 94 degrees, θ1 + θ2 = 106 degrees + 94 degrees = 200 degrees. Since θ1 = θ2, in this case, θ1 = θ2 = 100 degrees is derived.

The example in which the detector drum 41 and the generator drum 51 are provided at positions where they partially overlap each other in the device plan view has been described above. However, the rotation axes of the detector drum 41 and the generator drum 51 are horizontal. At the same time, they may be provided at positions coaxial with each other.

FIG. 10A shows a detector cable 42 and a generator when the detector drum 41 and the generator drum 51 of different diameters are coaxially provided and the detector drum 41 and the generator drum 51 rotate in the same direction. It is a figure for demonstrating an example of the winding direction of a cable 52, (b) is the winding direction of the detector cable 42 and the generator cable 52 when the detector drum 41 and the generator drum 51 rotate in opposite directions. It is a figure for demonstrating an example. Further, FIG. 10C is a diagram for explaining an example of the reduction mechanism 16b when the detector drum 41 and the generator drum 51 are coaxial. In FIGS. 10A, 10B, and 10C, the detector drum 41 and the generator drum 51 having different diameters are not fixed to each other, and therefore rotate at different rotation speeds.

Even when the detector drum 41 and the generator drum 51 are coaxial, the generator drum 51 rotates in conjunction with the detector drum 41, as in the examples shown in FIGS. 7A and 7B. When the detector cable 42 is wound, the generator cable 52 is sent out, and when the detector cable 42 is sent out, the generator cable 52 is wound so as to wind up the generator cable 52 (FIG. 10 (a), FIG. (B)). When the detector drum 41 and the generator drum 51 are coaxial, for example, gears 44 and 54 having the same number of teeth (for example, 10) are provided coaxially with the detector drum 41 and the generator drum 51, and the speed ratio (for example) For example, by engaging the gears 62 and 63 (for example, 50 and 25) having the same number of teeth according to 2) with the gears 44 and 54, respectively, the detector drum 41 and the generator drum 51 can be easily rotated at a desired speed ratio. be able to.

As shown in FIGS. 10A, 10B, and 10C, according to the reduction mechanism 16b, even when the detector drum 41 and the generator drum 51 are provided coaxially, they have different diameters. can do. Therefore, any one drum can be miniaturized. Therefore, for example, the range of motion of the display 31 can be expanded by downsizing the drum located on the display 31 side that can travel along the ceiling rail.

The X-ray diagnostic apparatus 10 according to the present embodiment can wind up the extra length of the cable by using the deceleration mechanism 16b. Further, the deceleration mechanism 16b can be housed in the housing of the C-arm support mechanism 16. Therefore, it is possible to realize a cableless appearance of the device. Moreover, the duct hose DH becomes unnecessary. Therefore, the user does not have to pay attention to the interference between the obstacle and the duct hose DH, and can concentrate on the procedure and perform the inspection and treatment safely and efficiently. Further, since the peripheral member can be installed at the position where it interferes with the duct hose DH, the restriction on the positioning of the C arm 14 due to the duct hose DH is eliminated.

Further, by using the speed reduction mechanism 16b, the speed ratio of the speed reduction mechanism 16b can be made different between the detector drum 41 and the generator drum 51. Therefore, according to the speed reduction mechanism 16b, the take-out position 18 can be changed because the take-up length of one of the detector cable 42 and the generator cable 52 and the take-out length of the other can be made different. Therefore, the take-out position 18 can be set according to the position of the dead space. Therefore, the device can be miniaturized.

Further, since the speed reduction mechanism 16b allows the detector drum 41 and the generator drum 51 to have different diameters according to the speed ratio of the speed reduction mechanism 16b, the device can be further miniaturized.

According to at least one embodiment described above, the cable of the X-ray generator and the cable of the X-ray detector can be wound on different winding cylinders at different rotation speeds.

In the above embodiment, the term "processor" refers to, for example, a dedicated or general-purpose CPU (Central Processing Unit), GPU (Graphics Processing Unit), or application specific integrated circuit (ASIC). It shall mean a circuit such as a programmable logic device (for example, a simple programmable logic device (SPLD), a complex programmable logic device (CPLD), and an FPGA). The processor realizes various functions by reading and executing a program stored in a storage medium.

Further, in the above embodiment, an example in which a single processor of the processing circuit realizes each function has been shown, but a plurality of independent processors are combined to form a processing circuit, and each processor realizes each function. May be good. When a plurality of processors are provided, the storage medium for storing the program may be provided individually for each processor, or one storage medium collectively stores the programs corresponding to the functions of all the processors. May be good.

Although some embodiments have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other embodiments, and various omissions, replacements, changes, and combinations of embodiments can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, as well as in the scope of the invention described in the claims and the equivalent scope thereof.

10 X-ray diagnostic device 12 X-ray detector 13 X-ray generator 14 C arm 15 Holding device 16 C arm support mechanism 16a Arctic motion mechanism 16b Deceleration mechanism 17 Stand 18 Extraction position 41 Detector drum 42 Detector cable 43 Detector pulley 51 Generator drum 52 Generator cable 53 Generator pulley CF Arc direction DH Duct hose

Claims (9)

A first cable having a housing having an arc shape, integrally supporting an X-ray generator and an X-ray detector at each end so as to face each other, and one end connected to the X-ray generator. And the first support mechanism that includes the second cable with one end connected to the X-ray detector in the housing.
When the first cable is wound and rotates in conjunction with the first winding cylinder that winds up or sends out the first cable according to the rotation and the first winding cylinder, and the first cable is wound, the said It has a second winding cylinder around which the second cable is wound so that the second cable is sent out and the second cable is wound up when the first cable is sent out, and the rotation of the first winding cylinder is provided. A deceleration mechanism that transmits the rotation of one of the first winding cylinder and the second winding cylinder to the other so that the second winding cylinder rotates at a rotation speed obtained by multiplying the speed by a predetermined speed ratio.
X-ray diagnostic device equipped with. The deceleration mechanism
A plurality of pulleys having a size corresponding to the predetermined speed ratio and a belt or chain connecting the plurality of pulleys are included.
The X-ray diagnostic apparatus according to claim 1. The deceleration mechanism
A plurality of gears having a number of teeth corresponding to the predetermined speed ratio.
The X-ray diagnostic apparatus according to claim 1. The first winding cylinder and the second winding cylinder are
The rotation axes are horizontal, and they are provided at positions where they overlap each other in the plan view of the device.
The X-ray diagnostic apparatus according to any one of claims 1 to 3. The first winding cylinder and the second winding cylinder are
The axis of rotation is horizontal and is provided at a position coaxial with each other.
The X-ray diagnostic apparatus according to any one of claims 1 to 3. A second support mechanism that slidably supports the first support mechanism along the arc, and
A third support mechanism that supports the second support mechanism on the floor or ceiling,
With more
The deceleration mechanism
Enclosed in the housing of the second support mechanism,
The X-ray diagnostic apparatus according to any one of claims 1 to 5. The housing of the second support mechanism
It has a drive mechanism that slides the first support mechanism along the arc.
The first winding cylinder and the second winding cylinder are
When the X-ray detector and the X-ray detector move integrally with the first support mechanism, one of them rotates due to the tension acting on the first cable or the second cable according to the movement, and the rotation The other is interlocked and rotated by the deceleration mechanism according to the above.
The X-ray diagnostic apparatus according to claim 6. The predetermined speed ratio is
It is determined according to the ratio of the diameters of the first winding cylinder and the second winding cylinder.
The X-ray diagnostic apparatus according to any one of claims 1 to 7. The predetermined speed ratio is
The take-out position where the first cable and the second cable are taken out from the first support mechanism to the first winding cylinder and the second winding cylinder, respectively, and the maximum amount of movement in one direction along the arc. Determined based on the maximum amount of movement in the other direction,
The X-ray diagnostic apparatus according to any one of claims 1 to 8.

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