JP2008086372A - X-ray diagnostic apparatus and hose holding apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an X-ray diagnostic apparatus capable of keeping the curvature of a cable equal to or more than an allowable cable minimum curvature even in the case that excessive force is applied to the cable by the movement of a first support part. <P>SOLUTION: To a hose 16 housing the cable 17, a hose holding body 20 comprising a plurality of clamp members 21 and an extensible/contractible member 22 is attached. The plurality of clamp members 21 are separated respectively by a prescribed distance in the axial direction of the hose 16 and clamp the hose 16. The extensible/contractible member 22 is provided so as to be freely extended and contracted between the two adjacent clamp members 21 and blocks a distance between the two clamp members 21 from becoming the prescribed distance or shorter at the time of reduction. Otherwise, the hose holding body comprising a wire rope 41 is attached to the hose 16. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an X-ray diagnostic apparatus, and more particularly to a technique for holding a cable in an X-ray diagnostic apparatus.

  An X-ray diagnostic apparatus is an apparatus that irradiates a subject with X-rays and images the inside of the body as a transmission shadow image, and is widely used for a fire extinguisher system diagnosis and a circulatory system diagnosis. An X-ray generator that emits X-rays and an X-ray detector that detects X-rays emitted from the X-ray generator and transmitted through the subject have various clinically necessary positions. It is necessary to change the direction in various ways. In such an X-ray diagnosis apparatus, the X-ray generation unit and the X-ray detection unit are mounted and supported at positions facing each other, and the direction of the first support unit is changed or moved. And a second support portion that is rotatably supported.

  Between the first support part and the second support part, for example, a plurality of cables are bridged for the purpose of supplying a high voltage to the X-ray generation part or taking out a signal detected by the X-ray detection part. Yes. Since the direction of the first support portion is variously changed with respect to the second support portion, the cable has a sufficient length, and is usually installed so as to hang down between the two support portions.

  This cable is bent and stretched along with the movement of the first support part, but it may be bent at an acute angle depending on the position of the first support part and the second support part. It takes. Therefore, conventionally, it has been proposed to protect a cable by storing it in a hose and to keep the curvature of the cable at a predetermined level or more by the rigidity of the hose.

  As another example, in an X-ray diagnostic apparatus having a C arm that supports an X-ray generation unit and an X-ray detection unit, a cable relay unit that relays a cable is provided above the C arm support unit that supports the C arm. Proposed to reduce the burden on the cable by fixing and fixing the middle part of the cable going to the X-ray generation part by this cable relay part (see, for example, Patent Document 1).

JP 2000-225112 A

  However, as the clinical angle range required for the first support part has expanded, the space in which the cable can be freely routed has narrowed, and the rigidity of the hose alone has caused the problem that the cable cannot be kept above the minimum allowable cable curvature. (See FIG. 3 described later). Here, the allowable cable minimum curvature means the curvature of the portion that bends with the smallest radius of curvature allowed for the cable.

  Further, even when the cable relay part is provided on the upper part of the C-arm support part, the distance between the cable relay part and the first support part is changed by the movement of the first support part. There was a problem that the cable between the support portions was still loaded.

  This invention has been made to solve the above-described problems caused by the prior art, and stores the cable therein, one end is connected to the first support portion, the other end is connected to the second support portion, In a hose that is bent and stretched by the movement of the first support part, even when an excessive force is applied to the cable due to the movement position of the first support part, the curvature of the part that bends at the most acute angle of the cable is kept above the allowable cable minimum curvature. An object of the present invention is to provide an X-ray diagnostic apparatus that can be used and a hose holding apparatus used therefor.

  In order to solve the above-described problems and achieve the object, an X-ray diagnostic apparatus according to claim 1 of the present invention includes a first support unit that supports an X-ray generation unit and an X-ray detection unit, and the first support. A second support part rotatably supporting the part, a cable bridged between the first support part and the second support part, and having flexibility, and storing the cable therein, One end is fixed to the first support portion, the other end is fixed to the second support portion, a hose that is bent and stretched by the movement of the first support portion, and the hose is attached, and the cable has a predetermined curvature. A hose holder that suppresses bending as described above is provided.

  A hose holding device according to a fifteenth aspect of the present invention is a first support portion that supports the X-ray generation portion and the X-ray detection portion at positions facing each other, and a first support portion that rotatably supports the first support portion. The cable spanned between the two support parts is housed inside, one end is connected to the second support part, the other end is connected to the first support part, and bent by the movement of the first support part. A hose holding device that is attached to an extended hose and regulates the behavior of the hose, and is adjacent to a plurality of clamp members that hold the hose at a predetermined distance from each other in the axial direction of the hose. And a telescopic member provided between the two clamp members so as to be extendable and configured to prevent a distance between the two clamp members from being equal to or less than a predetermined distance when being reduced.

  According to the invention of claim 1, even when an excessive force is applied to the cable due to the movement position of the first support portion, the curvature of the portion of the cable that bends at the most acute angle can be maintained at or above the minimum allowable cable curvature. Play.

  Further, according to the invention of claim 15, there is an effect that the curvature of the portion of the cable that bends at the acute angle can be maintained at or above the minimum allowable cable curvature.

  Exemplary embodiments of an X-ray diagnostic apparatus and a hose holding apparatus according to the present invention will be described below in detail with reference to the accompanying drawings. In the present embodiment, an X-ray cardiovascular diagnostic apparatus will be described as an example of the X-ray diagnostic apparatus.

(Example 1)
FIG. 1 is a perspective view showing an overall configuration of Embodiment 1 of an X-ray cardiovascular diagnostic apparatus according to the present invention. The X-ray circulatory diagnosis apparatus 100 includes a first support unit 60 on which an X-ray generation unit 11 that emits X-rays and an X-ray detection unit 13 that detects X-rays emitted from the X-ray generation unit 11 are mounted. The first support unit 60 is suspended from the ceiling, moved in various directions, and further provided with a moving mechanism unit 70 that changes the orientation of the first support unit 60 with respect to the subject (human body).

  Since the X-ray generation unit 11 and the X-ray detection unit 13 take various positions clinically necessary, they need to face various directions with respect to the subject. A subject (not shown) is placed on a slide table (not shown) at the time of clinical use, and is laid in the Y-axis direction at the position of point O in FIG. 1 where the X-axis, Y-axis, and Z-axis intersect.

  The moving mechanism unit 70 is provided on the ceiling surface so as to be able to reciprocate along the V-axis orthogonal to the U-axis and the moving base 2 that moves on the rail 1 laid on the ceiling surface along the U-axis. The movable body 2a is formed in an arc shape of approximately ¼ circle, the upper end portion is rotatably supported by the movable body 2a, and the lower end portion of the pivot arm 3 is provided at the first support portion. And a second support portion 15 that supports 60 in the horizontal direction. As shown by an arrow a in FIG. 1, the turning arm 3 turns in the forward and reverse directions around the W axis orthogonal to the U axis and the V axis.

  Further, the first support part 60 has a substantially arc shape (C shape), the intermediate part is supported by the second support part 15, and the X-ray generation part 11 that emits X-rays is supported at one end part, An X-ray detector 13 that detects X-rays emitted from the X-ray generator 11 is supported at the other end. For example, the first support unit 60 is an arc-shaped C-arm centered on the subject (the position of the point O in FIG. 1), and the X-ray generation unit 11 and the X-ray detection unit 13 are sandwiched between the subject. It is supported at the opposite position.

  Further, the hose 16 is bridged between the second support part 15 and the X-ray generation part 11, and a plurality of cables 17 provided between the second support part 15 and the X-ray generation part 11 are provided inside. Store. Moreover, the hose holder (hose holding device) 20 is attached to a hanging portion that hangs down below the hose 16 and suppresses the bending of the cable 17 accommodated therein beyond a predetermined curvature.

  The second support portion 15 supports the intermediate portion of the first support portion 60 from both sides, has a drive source therein, and the first support portion 60 is shown in FIG. It is reciprocated along the arc of the support part 60. That is, the second support portion 15 reciprocates the first support portion 60 on a circle around the Y axis (hereinafter, this operation is referred to as an arc motion of the first support portion 60). Further, the second support portion 15 rotates itself in the forward and reverse directions around the X axis as shown by the arrow c in FIG. That is, the second support portion 15 rotates the first support portion 60 forward and backward about the X axis as a rotation center (hereinafter, this operation is referred to as main rotation motion of the first support portion 60).

  The X-ray generation unit 11 includes an X-ray tube device 11a and an X-ray diaphragm 11b in detail. The X-ray generated by the X-ray tube device 11a is squeezed by the X-ray diaphragm 11b to irradiate the subject. The X-ray detection unit 13 two-dimensionally detects X-rays that have passed through the subject, and generates X-ray projection data based on the X-ray detection data. Note that the X-ray detector 13 moves forward and backward as shown by an arrow d in FIG.

  The hose 16 is made of resin and has flexibility, a high voltage cable for supplying a high voltage to the X-ray tube device 11a, a signal line cable for taking out a signal detected by the X-ray detection unit 13, and the like. A plurality of cables 17 are housed inside. The hose 16 protects the cable 17 from the external environment and suppresses the behavior of the cable to some extent so that the cable 17 does not hinder the operation of the first support portion 60.

  FIG. 2 is a perspective view showing a detailed structure of the hose holder 20. The hose holder 20 includes three clamp members (annular members) 21 that sandwich the first, second, and third portions that are spaced apart at approximately equal intervals in the longitudinal direction of the hose 16 and two adjacent clamp members. It is comprised from the elastic | stretchable elastic member 22 provided between 21 respectively. In FIG. 2, for convenience of explanation, the hose holder 20 is composed of three clamp members 21 and two elastic members 22, but in actuality, the hose holder 20 has more clamps. The member 21 and the expansion / contraction member 22 are connected. The expansion / contraction member 22 prevents the distance between two adjacent clamp members 21 from being equal to or less than a predetermined distance during reduction. Further, the hose holder 20 corrects the bending direction of the hose 16 so that the bending is within a predetermined plane.

  Each clamp member 21 has an annular shape and fastens the hose 16. Although the details will be described later, each of the expansion / contraction members 22 is connected to a connection hole (not shown) formed at both ends by passing through a rotation shaft (not shown) standing on the side of each clamp member 21. Due to this structure, the two adjacent elastic members 22 rotate so as to be bent from each other with the connecting portion as a rotation center. That is, the two elastic members 22 bend within a predetermined plane. When this structure continues, all the elastic members 22 are bent in the same plane, and the hose 16 supported by the elastic members 22 is curved only in a plane parallel to this plane. The surface including the curved hose 16 is hereinafter referred to as the curved surface of the hose 16). The hose holder 20 has the elastic member 22 only on one side of the hose 16, but the elastic member 22 may be disposed so as to face both sides of the hose 16. By setting it as such a structure, the rigidity of the direction where the expansion-contraction member 22 does not bend can be improved, and the correction force of the hose 16 can be increased.

  The hose holder 20 has a configuration in which a plurality of clamp members 21 and a plurality of elastic members 22 are connected. If the purpose is to keep the curvature of the cable 17 locally at or above the minimum allowable cable curvature. If the hose holder 20 is composed of at least two clamp members 21 and one elastic member 22 connecting them, a predetermined effect can be obtained.

  FIG. 3 is a perspective view showing a state in which the hose is bent when an excessive force is applied along with the arc motion of the first support portion 60 in the conventional apparatus. In the arc motion of the first support portion 60 relative to the second support portion 15, the first support portion 60 slides in an arc shape with respect to the second support portion 15 as indicated by an arrow b in FIG. 3. And the distance between the 2nd support part 15 and the X-ray generation part 11 changes with this circular arc motion. The hose 16 having both ends fixed to the second support portion 15 and the X-ray generation portion 11 and the accommodated cable 17 have an excessive force due to the relative positions of the second support portion 15 and the X-ray generation portion 11. May be added. As long as the force applied to the hose 16 is small, the curvature of the cable can be maintained at or above the minimum allowable cable curvature due to the rigidity of the hose 16. However, when the force applied to the hose 16 increases due to the positional relationship between the second support portion 15 and the first support portion 60, it becomes difficult to maintain the allowable cable minimum curvature or more. As shown in FIG. 3, conventionally, when an excessive force is applied to the hose 16, the hose 16, for example, hangs downward and bends at the sharpest angle at the lowermost folding portion, and the bending at this portion is the minimum allowable cable. The curvature may be smaller than the curvature, and the cable 17 is burdened.

  Therefore, in the first support portion 60 of the present embodiment, the hose holder 20 is attached to at least the portion of the hose 16 that bends at the most acute angle so that the cable 17 does not bend beyond a predetermined curvature. FIG. 4 is a perspective view showing a state in which the hose 16 is bent when an excessive force is applied along with the arc motion of the first support portion 60 when the hose holder 20 of the present embodiment is attached. As shown in FIG. 4, when the hose 16 is bent along with the arc movement of the first support portion 60, the elastic member 22 stops contracting to a predetermined length, so that the cable can be connected regardless of the rigidity of the hose 16. The curvature of the portion that bends at the sharpest angle can be kept above the minimum curvature of the allowable cable.

  Returning to FIG. 1, when the hose holder 20 is not provided as in the conventional device, the first support portion 60 is in a sideways position where the arc is horizontal due to the main rotational movement of the first support portion 60. The hose 16 alone does not have sufficient rigidity, and the hose 16 may droop greatly downward due to gravity and enter the surgical operation space or may be wound around the first support portion 60. In such a case, the operation of the first support part 60 may be obstructed or the operator's work may be hindered.

  On the other hand, in the present embodiment, the hose holder 20 corrects the bending direction of the hose 16 so that the bending is within a predetermined plane. Specifically, the hose holder 20 is attached so that the curved surface of the hose 16 is substantially parallel to the surface including the arc-like reciprocation of the first support portion 60. As a result, the hose 16 is maintained in a state along the first support portion 60 without hanging down against the gravity even in the main rotational movement of the first support portion 60. Therefore, the hose 16 does not hinder the operator's work, and the surgical work space is not narrowed.

  In addition, although the hose holding body 20 of the present embodiment is applied to the hose 16 spanned between the second support portion 15 and the X-ray generation portion 11, one side is the X-ray generation portion 11. A predetermined effect can be obtained as long as it is applied not only to the fixed hose but also to the hose whose one side is fixed at any position of the first support portion 60. Moreover, it is applied not only to what is fixed to the 2nd support part 15 on the other side but also to what is fixed to an external fixing position (for example, any position of the movement mechanism part 70), for example. However, a predetermined effect can be obtained. However, in the case of the hose 16 spanned between the X-ray generation part 11 provided on the arc and the second support part 15 provided in the vicinity of the arc as in this embodiment, the first support part The variation in the distance between the two points spanned by 60 arc motions is large, and the distance when the closest approach is short is more effective.

FIG. 5 is a diagram for specifically explaining the operation of the hose holding body 20, and is a diagram illustrating both the expanded state and the curved state of the hose 16. The clamp member 21 holds the first and second portions separated by a distance W in the longitudinal direction of the hose 16. In a state where the hose 16 is extended, the elastic member 22 extends so as to be the distance W between the first and second portions, and does not hinder the extension of the hose 16. On the other hand, in a state where the hose 16 is curved, the expansion / contraction member 22 is reduced by a predetermined length to become a length w, and prevents the distance between the first and second portions from becoming a predetermined distance or less. 16 does not bend below a predetermined curvature. Since the hose 16 has a predetermined flexibility, the hose 16 is curved with a substantially uniform curvature between two adjacent clamp members 21. The curvature of the hose 16 is determined by the length of the elastic member 22 and the amount of expansion / contraction. That is, the length of the expansion / contraction member 22 when the hose 16 extends linearly is W, the length of the expansion / contraction member 22 when the hose 16 is most curved is w, and the length of the hose 16 when the hose 16 is most curved. When the radius of curvature is r, the following relationship is established.

w = 2r × sin (W / 2r)

  FIG. 6 is a diagram for specifically explaining the operation of the hose holding body 20, and is a view in which both the expanded state and the contracted state of the expansion / contraction member 22 when the distance between the adjacent clamp members 21 is long are shown. is there. The clamp member 21 holds the first and second portions separated by a distance W in the longitudinal direction of the hose 16. In the state where the elastic member 22 is extended to the length W, the hose 16 is not prevented from extending linearly. On the other hand, in a state in which the elastic member 22 is reduced by a predetermined length to become the length w, the hose 16 is prevented from having a distance between the first and second locations being equal to or less than a predetermined value. At this time, the curvature between the two adjacent clamp members 21 is not necessarily uniform, but is not curved below a predetermined curvature. That is, even if the elastic member 22 has a long length, the clamp members 21 at both ends firmly hold the hose 16 so that the hose 16 between the clamp members 21 does not bend at an acute angle (below a predetermined curvature).

  FIG. 7 is a perspective view illustrating an example of the clamp member 21. The clamp member 21 includes a semicircular first semicircular member (arc-shaped member) 26 and a second semicircular member (arc-shaped member) 27 each having a semicircular shape. The first semicircular member 26 and the second semicircular member 27 are connected to each other so as to form a ring and sandwich the hose 16 therein. An engagement hole 26a that engages with an engagement rod 27a described later is opened at one end of the first semicircular member 26. A bent flange 26b having a surface orthogonal to the arc is formed at the other end of the first semicircular member 26, and a female screw hole 26c is screwed into the bent flange 26b.

  On the other hand, at one end of the second semicircular member 27, an engagement rod 27a that is inserted into and engaged with the engagement hole 26a of the first semicircular member 26, as shown by a broken line arrow in FIG. Is formed. A flange 27b having a surface facing the bent flange 26b of the first semicircular member 26 is formed at the other end of the second semicircular member 27, and a through hole 27c is formed in the flange 27b. ing. A fastening base 27 d on which a connection screw (connection shaft / rotation shaft) 34 is erected is provided at the center of the outer peripheral surface of the second semicircular member 27. A female screw hole 27e into which the distal end portion of the connection screw 34 is screwed is screwed into the fastening base 27d. The connection screw 34 is used to connect the expansion / contraction member 22 and the clamp member 21 and to connect two adjacent expansion / contraction members 22 and is erected so as to be orthogonal to the axis of the hose 16 (not shown).

  When the clamp member 21 is attached to the hose 16, the first semicircular member 26 and the second semicircular member 27 are engaged with the engagement rod 27a in the engagement hole 26a and further penetrate the through hole 27c. The tightening screw 31 is tightened in the female screw hole 26 c and is tightly fitted to the hose 16. The first semicircular member 26 and the second semicircular member 27 are produced, for example, by press bending using a thick steel plate as a material. The side edge of the first semicircular member 26 is provided with a bent portion 26d formed by being bent inward over the entire length. The bent portion 26d acts as an anti-slip material that is difficult to slip on the outer peripheral surface of the hose 16 when the clamp member 21 holds the hose 16 therebetween. A bent portion 27f is provided on the side of the flange 27b for the purpose of hiding the head of the fastening screw 31.

  The clamp member 21 is fixed to the hose 16 by the above-described procedure. Of the first semicircular member 26 and the second semicircular member 27 that are connected to form a circle, the first is attached to the hose 16 first. If the ratio of the arc of the semicircular member 26 is slightly increased, that is, for example, if the first semicircular member 26 is an arc having a central angle of about 200 degrees, the first semicircular member 26 sandwiches the hose 16. When dropped, workability is improved because it does not fall.

  In addition, although the hose holding body 20 of a present Example has the expansion-contraction member 22 only on the one side of the clamp member 21, the expansion-contraction member 22 is provided also in the opposite side which opposes, and the expansion-contraction member 22 is clamp member 21. You may make it provide in the both sides. By setting it as such a structure, the correction force which suppresses drooping of the hose 16 can be strengthened.

  In addition, the clamp member 21 of the present embodiment is formed by connecting a semicircular member in which an annular ring is divided into two parts, but a plurality of arcuate members that are further divided are connected. But you can. Conversely, a structure in which a belt-like member having a predetermined flexibility is wound around the hose 16 may be used. Furthermore, the hose 16 may be a member that does not completely surround the hose 16 and has, for example, a C shape and sandwiches the hose 16 with a predetermined spring property.

  FIG. 8 is a diagram showing a detailed structure of an example of the expansion / contraction member 22 and the rotation stopper 35, and shows both the part viewed from the lateral direction and the part viewed from the top as a partial cross section in the axial direction. FIG. The extendable member 22 includes a cylinder part (cylinder main body) 23 having an extendable structure, a front connecting part 24A provided at the front end of the cylinder part 23, and a rear connecting part 24B provided at the rear end of the cylinder part 23. It is configured.

  The cylinder part 23 is composed of a long bottomed cylindrical cylindrical part 23a and a rod 23b that is slidably accommodated in the cylindrical part 23a and has a distal end protruding from the opening of the cylindrical part 23a. . A long hole 23c extending in the axial direction is opened in the cylindrical part 23a. A stopper 23d that bends at a right angle is provided at the rear end of the rod 23b. The stopper 23d penetrates the long hole 23c and protrudes slightly to the outside. The stopper 23d functions to determine the length when the expansion / contraction member 22 is expanded and the length when the expansion member 22 is contracted to a predetermined length, and also functions to prevent the rod 23b from rotating relative to the tubular part 23a. The length of the long hole 23c may be adjusted according to the minimum allowable cable curvature of the hose 16.

  The front connecting portion 24A has a cylindrical shape having a connecting hole 24a at the center, and is fixed to the tip of the rod 23b with the axis line oriented in a direction perpendicular to the rod 23b. On the other hand, the rear connecting portion 24B is formed in a cylindrical shape having a connecting hole 24b at the center, and is formed integrally with the cylindrical part 23a at the rear end of the cylindrical part 23a with the axis line oriented in a direction orthogonal to the cylindrical part 23a. ing. The front connecting portion 24A and the rear connecting portion 24B have the same outer diameter, inner diameter, and height (length in the axial direction). The front connecting portion 24A and the rear connecting portion 24B overlap when the elastic member 22 is connected, and the same connecting screw is inserted into the connecting holes 24a and 24b.

  The anti-rotation 35 is a part that is used as required, and is attached in such a manner that a convex part 35a formed in the center of the C-shaped outer periphery is engaged with a concave part 23e formed in the rear part of the cylindrical part 23a. The rod 23b is extended from the C-shaped opening 35b so as to surround the front coupling portion 24A of the other elastic member 22 coupled to the one of the C-shaped opening 35b when the rod 23b rotates. By restricting the movement by bringing the end into contact with the side surface of the rod 23b, the rotation angle of the rod 23b is regulated to a predetermined angle.

  The stopper 23d may be configured to be biased to the protruding position by a built-in spring so as to protrude from and into the rod 23b. With such a structure, the rod 23b can be easily inserted into the cylindrical part 23a, and workability at the time of assembling the cylinder part 23 is improved. In addition to this structure, if a plurality of long holes 23c are formed in the cylindrical part 23a at predetermined intervals in the axial direction, the length of the expansion / contraction member 22 can be reduced by selecting the long holes 23c to be used. It can be changed in multiple stages.

  FIG. 9 is a side view showing a state in which a plurality of elastic members 22 are connected. The plurality of telescopic members 22 are connected to the connecting holes 24a and 24b through the connecting screws (connecting shaft / rotating shaft) 34 with the front connecting portion 24A and the rear connecting portion 24B overlapped. The front connecting portion 24A and the rear connecting portion 24B are a fastening base 27d of the second semicircular member 27 of the clamp member 21 by a connecting screw 34 with a washer 33 and, if necessary, a detent 35 incorporated therein. Is pivotally attached to. And the spacer 32 is pinched | interposed in order to make height equal in the front connection part 24A and rear connection part 24B of the last end of the connection body which consists of the several expansion member 22 connected in this way, and the last end.

  The connecting screw 34 erected on the outer peripheral surface of the clamp member 21 has a function as a connecting shaft that connects the two expansion / contraction members 22 adjacent in the axial direction of the hose 16, and the expansion / contraction member 22 and the clamp member 21. Although it has a function with the rotating shaft to connect, this connecting shaft and rotating shaft may be provided separately.

  As described above, according to the present embodiment, since the hose holder 20 is provided to suppress the cable 17 from bending beyond a predetermined curvature, the hose holder 20 is bent at least at the acute angle of the cable 17. By attaching to the portion, the curvature of the cable 17 can be kept at or above the minimum allowable cable curvature, and the load on the cable 17 can be reduced. Further, since the hose 16 is bent at an acute angle and does not protrude from the first support portion 60, the space occupancy rate of the first support portion 60 is not increased, and the operator's work is further hindered. There is also an effect that it does not become. Moreover, since the 2nd support part 15 supports the 1st support part 60 so that rotation is possible, the distance between two points over which a hose is bridge | crossed is short, and the operation | movement of bending and extending of a hose becomes intense, but such a state The curvature of the portion of the cable that bends at the acute angle can be maintained at or above the minimum allowable cable curvature.

  Moreover, according to the present embodiment, the hose holder 20 corrects the hose 16 so that the curve of the hose 16 changes in a plane at a predetermined position with respect to the first support portion 60. Since the curve can be accommodated within a predetermined plane and the direction of curve of the hose 16 can always be constant with respect to the first support part 60, the hose 16 can be wound around the first support part 60, 16 does not obstruct the operator's work, and the operation work space can be expanded.

  In addition, according to the present embodiment, the hose holder 20 includes a plurality of clamp members 21 that hold the hose 16 and an expansion / contraction that prevents the distance between the two clamp members 21 from being equal to or less than a predetermined distance when reduced. Since the member 22 is provided, it can suppress reliably that the cable 17 bends to the curvature more than predetermined. Further, since the elastic members 22 are connected to the adjacent front connecting portions 24A and rear connecting portions 24B by connecting shafts that are orthogonal to the axis of the hose 16 and parallel to each other, all the elastic members 222 are connected. Are bent in the same plane, and the curve of the hose 16 can be easily accommodated in one plane. Furthermore, since this can be realized with a simple structure, the fabrication is easy.

  Further, according to the present embodiment, the plurality of elastic members 22 arranged in the axial direction of the hose 16 are erected on the outer peripheral surface of the annular member by overlapping the adjacent front connection portion 24A and rear connection portion 24B. Since it is pivotally supported by the same rotation shaft, the structure that bends in the same plane of the expansion / contraction member 22 and the structure that connects the expansion / contraction member 22 and the clamp member 21 can be realized by a simple structure, and the structure Since it is simple, it is easy to manufacture. Further, since the clamp member 21 has an annular shape that wraps around the hose 16, the support of the hose 16 is ensured and the reliability can be improved.

  Further, according to the present embodiment, the annular members constituting the clamp member 21 are each formed in an arc shape, and are arranged so as to surround the hose 16, and are composed of a plurality of arc-shaped members that are annularly connected by connecting both ends. Therefore, the fabrication is easy and the cost can be reduced, and the clamp member 21 can be easily attached to the hose 16 and the workability can be improved. In addition, the clamp member 21 has a spring property and has a C-shape sandwiching the hose 16, so that the clamp member 21 can be easily attached to the hose 16 and workability can be improved.

  Further, according to the present embodiment, the second support portion 15 supports the first support portion 60 so as to be slidable, so that the distance between two points over which the hose 16 is bridged is short and one side slides. Thus, the bending and stretching operation of the hose 16 becomes even more intense, but even in such a state, the curvature of the portion of the cable 17 that bends at the acute angle can be kept above the minimum allowable cable curvature.

  Further, according to the present embodiment, the first support unit 60 is an arc-shaped C arm centered on the subject, and the X-ray generation unit 11 and the X-ray detection unit 13 are supported by both ends of the C arm. The second support 15 reciprocates the C-arm along the arc, and the hose 16 has one end fixed to the X-ray generator 11 and the other end fixed to the second support 15. The distance between the two spanned points 16 is short and one side reciprocates along the arc, so that the operation of bending and stretching the hose 16 becomes more intense. It is possible to keep the curvature of the portion that bends more than the minimum allowable cable curvature.

  In addition, according to the present embodiment, the second support portion 15 further rotates the C arm (first support portion 60) about the rotation axis extending in the radial direction of the arc, so that the operation of bending and extending the hose 16 is performed. In this state, the curvature of the portion of the cable 17 that bends at the sharpest angle can be kept at or above the minimum allowable cable curvature.

  In addition, according to the present embodiment, the first support part 60 is an arcuate C-arm that supports the X-ray generation part 11 and the X-ray detection part 13 at positions facing each other, and the hose holder 20 is a hose holder. Since the curvature of 16 is corrected so that it is performed in a plane parallel to the plane including the C-arm, the space occupancy rate of the first support portion 60 does not increase, and the operator's work There is no hindrance.

  In addition, although the present Example demonstrated the case where the curvature of the cable 17 was kept more than an allowable cable minimum curvature by attaching the hose holding body 20 which consists of the clamp member 21 and the expansion-contraction member 22 to the hose 16, the cable 17 was used. The hose 16 can be kept at an allowable cable minimum curvature or more by other methods as long as the hose 16 can be provided with appropriate rigidity. For example, even if a reinforcing member having appropriate rigidity is used, it is possible to keep the curvature of the cable at or above the minimum allowable cable curvature.

(Example 2)
FIG. 10 is a perspective view of a hose holder showing Example 2 of the X-ray circulatory diagnostic apparatus according to the present invention. In the X-ray circulatory diagnosis apparatus of the present embodiment, a wire rope is connected to the hose 16 that is bridged between the second support portion 15 and the X-ray generation portion 11 instead of the hose holder 20 of the first embodiment. (Reinforcing member) 41 is provided as a hose holder. Other configurations are the same as those of the first embodiment.

  The wire rope 41 is accommodated in the hose 16 so as to be bent integrally with the hose 16. That is, the wire rope 41 is inserted through the entire length of the hose 16 together with the cable 17. The material of the wire rope 41 is preferably strong against corrosion so as not to cause electric leakage or the like as well as being resistant to fatigue failure.

  In addition, the wire rope 41 should just be provided along the hose 16, and you may make it not only the inside of the hose 16 but the outer side. For example, by winding the wire rope 41 around the hose 16 in a spiral manner, the wire rope 41 can be extended along the outside of the hose 16. Further, the hose 16 may be tied at a predetermined interval. On the other hand, any member other than the wire rope 41 can be used as a hose holder as long as it is a long member having a predetermined bending rigidity and strong against fatigue failure. For example, if it is used for the hose 16 having a small diameter, a stainless steel wire (round bar) or the like is suitable. Further, the wire rope 41 is not limited to the entire length of the hose 16 and may be disposed only in a predetermined section. In this way, by arranging the long reinforcing member having a predetermined bending rigidity so as to be bent integrally with the hose 16 along the hose 16, the curvature of the cable 17 can be maintained at or above the minimum allowable cable curvature. it can.

  As described above, according to the second embodiment, the hose holding body 20 is provided along the hose 16 so as to be bent integrally with the hose 16 and has a predetermined bending strength. Therefore, the structure is simple and easy to manufacture. Further, since the reinforcing member is a wire rope housed in the hose 16 together with the cable 17, the structure is further simplified and the manufacturing is further facilitated, and the material is inexpensive, so that the cost can be reduced.

  In addition, as shown in FIG. 11, the hose holder of Example 1 and the hose holder of Example 2 can be used in combination. By having such a structure, a synergistic effect can be obtained.

  In a two-way imaging (biplane) apparatus having a structure in which a C arm and an Ω arm are combined as shown in FIG. 12, the range of clinical angles is expanded, so that the space in which the cable can be routed is inevitably narrowed. Therefore, in a portion where a relatively long cable is bridged between mutually moving devices, such as the portions indicated by A, B, and C in the figure, the curvature of the cable exceeds the allowable cable minimum curvature only with the hose. It will be difficult to keep Therefore, in such a two-way imaging device, it is particularly effective to attach the hose holder of the above embodiment.

  In the above-described embodiment, the cable routing of the X-ray circulatory diagnostic apparatus having the C arm has been described. However, the present invention is not limited to this, and the X-ray diagnostic apparatus having the Ω arm and others. The present invention can also be applied to a cable routed to the X-ray diagnostic apparatus.

  As described above, the present invention provides an internal space between the first support portion on which the X-ray generation portion and the X-ray detection portion are mounted and the second support portion that rotatably supports the first support portion. The X-ray diagnostic apparatus is suitable for being applied to an X-ray diagnostic apparatus in which a hose containing a cable is bridged, and in particular, has a wide clinical angle range and a narrow space for routing the cable, and the X-ray diagnostic apparatus It is most suitable when applied to the hose holding device used in the above.

1 is a perspective view showing an overall configuration of Embodiment 1 of an X-ray cardiovascular diagnostic apparatus according to the present invention. It is a perspective view which shows the detailed structure of the hose holding body of Example 1. FIG. It is a perspective view which shows a mode that a hose curves when an excessive force is added with the circular-arc motion of C arm in the conventional apparatus. It is a perspective view which shows a mode that a hose curves when excessive force is added with the circular-arc motion of C arm of Example 1. FIG. It is for demonstrating the effect | action of the hose holding body of Example 1 concretely, and is the figure which wrote together the state which the hose extended and curved. It is for demonstrating the effect | action of the hose holding body of Example 1 concretely, and is the figure which wrote together the state which the expansion-contraction member extended when the distance between adjacent clamp members is long, and the contracted state. It is a perspective view which shows an example of a clamp member. It is a figure which shows the detail of an example of an expansion-contraction member and an anti-rotation stopper, and is a figure which shows both the place seen from the horizontal direction and the place seen from the upward direction as a partial cross section in the axial direction. It is a side view which shows a mode that a some elastic member is connected. It is a perspective view of the hose holding body which shows Example 2 of the X-ray circulatory organ diagnostic apparatus concerning this invention. It is a perspective view which shows the case where the hose holding body of Example 1 and the hose holding body of Example 2 are combined. It is a perspective view which shows the two-way imaging device which has the structure which combined C arm and omega arm.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rail 2 Moving base 2a Movable body 3 Revolving arm 11 X-ray generation part 11a X-ray tube apparatus 11b X-ray aperture 13 X-ray detection part 15 Second support part 16 Hose 17 Cable 20 Hose holding body (hose holding apparatus)
21 Clamp member (annular member)
22 Stretchable member 23 Cylinder (Cylinder body)
23a cylinder part 23b rod 23c long hole 23d stopper 23e recess 24A front connection part 24a connection hole 24B rear connection part 24b connection hole 26 first semicircular member (arc-shaped member)
26a engaging hole 26b bent flange 26c female screw hole 26d bent portion 27 second semicircular member (arc-shaped member)
27a Engagement rod 27b Flange 27c Through hole 27d Fastening base 27e Female screw hole 27f Bending part 31 Tightening screw 32 Spacer 33 Washer 34 Connection screw (connection shaft / rotary shaft)
35 Detent 35a Protruding part 35b C-shaped opening 41 Wire rope (reinforcing member)
60 1st support part (C arm)
70 Movement mechanism part 100 X-ray circulatory diagnostic apparatus (X-ray diagnostic apparatus)

Claims (15)

A first support part for supporting the X-ray generation part and the X-ray detection part;
A second support part that rotatably supports the first support part;
A cable spanned between the first support portion and the second support portion;
A hose that has flexibility, houses the cable therein, has one end fixed to the first support portion, the other end fixed to the second support portion, and is bent and extended by the movement of the first support portion When,
An x-ray diagnostic apparatus comprising: a hose holder attached to the hose and suppressing the cable from being bent beyond a predetermined curvature. 2. The X-ray diagnosis according to claim 1, wherein the hose holder corrects the hose so that a curve of the hose changes in a plane located at a predetermined position with respect to the first support portion. apparatus.   The hose holder is provided with a plurality of clamp members that hold the hose apart from each other by a predetermined distance in the axial direction of the hose and the two clamp members adjacent to each other. The X-ray diagnostic apparatus according to claim 1, further comprising an expansion / contraction member that prevents a distance between the two clamp members from being equal to or less than a predetermined distance. The plurality of stretchable members arranged in the axial direction of the hose have their front end portions and rear end portions that are adjacent to each other connected by connecting shafts that are orthogonal to and parallel to the axis of the hose. The X-ray diagnostic apparatus according to claim 3. The telescopic member has a telescopic cylinder body, and a front coupling part and a rear coupling part respectively provided at front and rear ends of the cylinder body,
The plurality of telescopic members arranged in the axial direction of the hose are pivotally supported by the same rotating shaft standing on the outer peripheral portion of the clamp member, with the adjacent front connecting portion and rear connecting portion overlapping each other. The X-ray diagnostic apparatus according to claim 3, wherein: The X-ray diagnostic apparatus according to claim 3, wherein the clamp member has an annular shape wound around the hose. The X-ray diagnosis according to claim 6, wherein each of the clamp members is formed in an arc shape, and is arranged so as to surround the hose, and includes a plurality of arc-shaped members that are connected at both ends to form an annular shape. apparatus. The X-ray diagnostic apparatus according to claim 3, wherein the clamp member has a spring property and has a C shape sandwiching the hose. The said hose holding body was provided along this hose so that it might bend integrally with the said hose, and provided with the reinforcement member which has predetermined | prescribed bending strength. X-ray diagnostic apparatus according to. The X-ray diagnostic apparatus according to claim 9, wherein the reinforcing member is a wire rope housed in the hose together with the cable. The X-ray diagnostic apparatus according to claim 10, wherein the second support part supports the first support part so as to be slidable. The first support part is an arcuate C-arm centered on the subject,
The X-ray generation unit and the X-ray detection unit are supported at both ends of the C arm,
The second support portion reciprocates the C arm along an arc,
The X-ray diagnostic apparatus according to claim 11, wherein one end of the hose is fixed to the X-ray generation unit, and the other end is fixed to the second support unit.   The X-ray diagnostic apparatus according to claim 12, wherein the second support portion further rotates the C arm about a rotation axis extending in a radial direction of the arc. The first support part is an arcuate C-arm that supports the X-ray generation part and the X-ray detection part at positions facing each other,
The X-ray diagnostic apparatus according to claim 2, wherein the hose holding body is corrected so that the curve of the hose is performed in a plane parallel to a plane including the C-arm. A cable bridged between a first support part that supports the X-ray generation part and the X-ray detection part at positions facing each other and a second support part that rotatably supports the first support part is provided inside. The one end is connected to the second support part, the other end is connected to the first support part, and is attached to a hose that is bent and stretched by the movement of the first support part, and regulates the behavior of the hose. A hose holding device,
A plurality of clamp members that hold the hose apart from each other by a predetermined distance in the axial direction of the hose, and a distance between the two clamp members that are provided between the two adjacent clamp members so as to be stretchable. A hose holding device comprising: an expansion / contraction member that prevents the distance from being equal to or less than a predetermined distance.

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