JP5930017B2 - X-ray equipment - Google Patents

Description

  The present invention relates to an X-ray imaging apparatus such as a fluoroscopic imaging table.

  Such an X-ray imaging apparatus is arranged between an X-ray tube, an X-ray detector that detects X-rays irradiated from the X-ray tube and passed through a subject, and the X-ray tube and the X-ray detector. And a top plate on which the subject can be placed (see Patent Document 1). The top plate is movable between a recumbent position for performing the recumbent photographing and a standing position for performing the recumbent photographing. On the surface of the top board, a pair of grip bars used by the subject to maintain his / her body in a predetermined posture when performing a supine position photographing is disposed (see Patent Document 2).

JP 2006-81785 A JP 2010-99167 A

  In the case of performing a supine position imaging in such an X-ray imaging apparatus such as a fluoroscopic imaging table, the posture and body position of the subject can be changed by changing the angle of the top plate with respect to the horizontal direction. Performing fluoroscopy and shooting. In such a case, the subject holds the pair of left and right grip bars in order to maintain the body in a predetermined posture by supporting the body of the subject.

  At this time, the grip rod in the conventional X-ray imaging apparatus has not been shaped in consideration of the ease of gripping of the subject. Take a picture of the subject in the prone position (prone position) where the subject is lying prone, especially with respect to the gripping rod considering the ease of gripping when the subject is in the supine position (back position) In some cases, it may be difficult for the subject to securely hold the gripping rod.

  The present invention has been made to solve the above-described problem, and provides an X-ray imaging apparatus in which a subject's finger can be securely hooked on a gripping rod and the subject can sufficiently grip the gripping rod. The purpose is to do.

The invention according to claim 1 is an X-ray tube, an X-ray detector that detects X-rays irradiated from the X-ray tube and passed through the subject, and between the X-ray tube and the X-ray detector. In the X-ray imaging apparatus provided with a top plate on which the subject can be placed and a grip rod disposed on the surface of the top plate, the grip rod is orthogonal to the axis thereof The cross-sectional shape of the plane facing the direction is a polygon, and the concave portions having a shape corresponding to the finger of the subject are formed at the entire circumference at a pitch corresponding to the interval between the fingers of the subject. It is characterized by.

According to a second aspect of the present invention, in the first aspect of the invention, the polygonal corners are chamfered.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the recess has an arcuate cross-sectional shape in a plane including the axis of the grip bar.

According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the depth of the concave portion is 3.5 mm to 4.0 mm.

According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the pitch of the recesses is 20 mm to 24 mm.

The invention according to claim 6 is an X-ray tube, an X-ray detector that detects X-rays irradiated from the X-ray tube and passed through the subject, and between the X-ray tube and the X-ray detector. The X-ray imaging apparatus includes a top plate that can be placed on the subject and a grip bar that is disposed on a surface of the top plate. The grip bar is a finger of the subject. And a recess having a shape corresponding to the subject's finger, at a pitch corresponding to the interval between the subject's fingers, It is formed around the circumference.

The invention according to claim 7 is the invention according to claim 6 , wherein the resin is an ethylene / vinyl acetate copolymer resin.

According to an eighth aspect of the present invention, in the invention according to any one of the first to seventh aspects, the grip bar is disposed along a longitudinal direction or a lateral direction of the top plate. apparatus.

According to the first to eighth aspects of the present invention, since the subject's finger is securely hooked on the gripping rod, the subject can sufficiently grasp the gripping rod.

According to the inventions described in claims 6 and 7 , the finger of the subject is more reliably hooked on the grip rod by the action of the elasticity and friction coefficient of the resin constituting the grip rod, and the subject However, it becomes possible to hold the grip bar more sufficiently.

It is a schematic diagram of the X-ray imaging apparatus concerning this invention, and is a front view when the table 13 is arrange | positioned in the supine position. It is a schematic diagram of the X-ray imaging apparatus concerning this invention, and is a front view when the table 13 is arrange | positioned in a standing position. It is a schematic diagram of the X-ray imaging apparatus which concerns on this invention, and is a side view when the table 13 is arrange | positioned in a standing position. 4 is a perspective view of a gripping rod 40. FIG. FIG. 4 is a partial cross-sectional view of a grip bar 40.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 3 are schematic views of an X-ray imaging apparatus according to the present invention. FIG. 1 is a front view of the X-ray imaging apparatus when the table 13 is disposed at the prone position. FIG. 2 is a front view of the X-ray imaging apparatus when the table 13 is disposed at the standing position. Further, FIG. 3 is a side view of the X-ray imaging apparatus when the table 13 is disposed at the standing position.

  This X-ray imaging apparatus is called an X-ray fluoroscopic imaging table, and includes a top plate 13, a slide arm 15 connected to the top plate 13, and an X disposed at the tip of the slide arm 15. An X-ray detector 12 such as an image intensifier (II) or a flat panel detector (FPD) disposed on the opposite side of the X-ray tube 11 with respect to the top plate 13 is provided. The slide arm 15 is provided with a compression cylinder mechanism 20 for pressing the diagnosis part of the subject as necessary. Moreover, the step board 30 and the grip rod 40 which is a characteristic part of the present invention are fixed to the top plate 13. As shown in FIGS. 1 to 3, the grip bar 40 is disposed along the longitudinal direction of the top plate 13. However, you may arrange | position this grip rod 40 along the transversal direction which is a direction orthogonal to the longitudinal direction of the top plate 13. FIG.

  The top plate 13, the slide arm 15 and the X-ray tube 11 are moved to a position where the surface of the top plate 13 faces in the horizontal direction shown in FIG. 2 and FIG. 3, the surface of the top plate 13 is rotatable between a standing position where the surface of the top plate 13 faces in the vertical direction. Further, the rotation mechanism 16 itself can be moved up and down with respect to the main column 17 erected on the base plate 18.

  When the top 13 is in the prone position, the subject in the prone position is seen through or photographed. At this time, the subject is placed on the top board 13. Further, when the top plate 13 is in the standing position, the subject in the standing position is seen through or photographed. Further, when taking an image while changing the angle of the top plate 13, the subject stands on the step platform 30 fixed to the top plate 13. Then, the angle of the top plate 13 is changed with the subject placed on the top plate 13. At this time, the subject holds his / her body by holding a pair of grip bars 40 arranged on the top board 13.

  When performing fluoroscopy or imaging for a subject in a prone position, for example, the top plate 13 may be at an angle such that the head of the subject faces downward. In such a case, the subject needs to securely grip the pair of grip bars 40 disposed on the top board 13. For this reason, in the X-ray imaging apparatus according to the present invention, the shape of the pair of grip bars 40 is unique.

  FIG. 4 is a perspective view of the grip rod 40. FIG. 5 is a partial cross-sectional view of the grip bar 40.

  The grip rod 40 includes a grip portion 41 that is a region to be gripped by the subject, and fixing portions 42 to the top plate 13 formed at both ends of the grip portion 41. The grip rod 40 is produced by injection molding EVA (ethylene vinyl acetate copolymer). For this reason, this grip rod 40 is provided with elasticity and a friction coefficient to such an extent that the subject's finger is caught. Instead of EVA, other resins having elasticity and a coefficient of friction that allow the finger of the subject to be caught may be used.

  The grip portion 41 of the grip rod 40 has a cylindrical shape in which concave portions are formed on the entire circumference at a constant pitch. That is, the grip bar 40 has a circular cross-sectional shape in a plane that faces in a direction perpendicular to the axis. The shape of the recess in the grip rod 40 is formed to be a shape corresponding to the finger of the subject, and the pitch of the recess is formed to be a pitch corresponding to the interval between the fingers of the subject. . As shown in FIG. 5, the outer diameter of the grip portion 41 of the grip rod 40 is S, and the shape of the recess formed therein is a part of the arc of radius R, and the pitch of the recess is P, depth The size is D. Here, the outer diameter S of the grip portion 41 in the grip rod 40 is preferably 34 mm to 38 mm, the depth D of the recess is preferably 3.5 mm to 4.0 mm, and the pitch P of the recess is 20 mm. It is preferable to be 24 mm.

  That is, when the inner diameter of the ring made of the thumb and the middle finger is defined as the grip inner diameter, the average grip inner diameter of an Oriental adult male is about 40.1 mm, and the average grip inner diameter of an adult female is about 38.3 mm. is there. For this reason, in order that the grip part 41 of the grip rod 40 fits in a hand, the outer diameter S of the grip part 41 is 38 mm or less, and it is preferable that it is 34 mm thru | or 38 mm.

  Moreover, if the recessed part whose depth D is 3.8 mm is formed in the perimeter of the grip part 41 whose outer diameter S is 38 mm, the minimum outer diameter of the grip part 41 will be 30.4 mm. At this time, the circumferential lengths of the outer diameter S and the minimum outer diameter are 119.4 mm and 95.5 mm, respectively, and the difference is 23.9 mm. On the other hand, the average length of the index finger and middle finger of an Oriental adult man is about 71.3 mm and 79.5 mm, respectively, and the average length of the index finger and middle finger of an adult woman is 66. It is about 5 mm and 74.1 mm. Then, considering that the length between the joints is about one third of each finger, this value is about 22.2 mm to 26.5 mm, which is the circumferential length of the outer diameter S and the minimum outer diameter. It is about the same as the difference. Thereby, the grip part 41 can be grasped so that the first joint of the finger overlaps with the minimum outer diameter. This depth D is preferably 3.5 mm to 4.0 mm.

  Furthermore, the maximum value of the joint width of the Oriental finger is about 22 mm. For this reason, it is preferable that the pitch P of the recessed part formed in the grip part 41 in the grip rod 40 is 20 mm to 24 mm.

  In addition, in embodiment mentioned above, what has the cylindrical shape from which the cross-sectional shape of the plane which faces the direction orthogonal to the axial center becomes circular as the grip rod 40 is used. However, as the gripping rod 40, a gripping rod having an elliptical cross-sectional shape facing the direction perpendicular to the axis may be used. Furthermore, it is also possible to use a flat cross-sectional shape that faces in a direction orthogonal to the axis. In this case, it is preferable to chamfer the corners of the polygon.

  As described above, in the X-ray imaging apparatus according to the present invention, the grip portion 41 of the grip rod 40 has a cylindrical shape in which the concave portions are formed on the entire circumference at a constant pitch. It is formed to have a shape corresponding to the subject's finger, and the pitch of the recess is formed to be a pitch corresponding to the interval between the subject's fingers. The rod 40 is securely hooked and the subject can sufficiently hold the grip rod 40.

DESCRIPTION OF SYMBOLS 11 X-ray tube 12 X-ray detector 13 Top plate 14 Fixing recessed part 15 Slide arm 16 Rotating mechanism 17 Main support | pillar 18 Base plate 30 Footrest 40 Grip bar 41 Grip part 42 Fixing part

Claims (8)

An X-ray tube, an X-ray detector that detects X-rays irradiated from the X-ray tube and passed through the subject, and disposed between the X-ray tube and the X-ray detector, In an X-ray imaging apparatus comprising a top plate that can be placed and a gripping rod disposed on the surface of the top plate,
The grip bar has a polygonal cross-sectional shape that faces in a direction perpendicular to the axis thereof, and a recess having a shape corresponding to the subject's finger corresponds to the interval between the subject's fingers. An X-ray imaging apparatus characterized by being formed on the entire circumference at a pitch. The X-ray imaging apparatus according to claim 1 ,
An X-ray imaging apparatus in which a chamfer is applied to a corner of the polygon. The X-ray imaging apparatus according to claim 1 or 2 ,
The concave portion is an X-ray imaging apparatus in which a cross-sectional shape of a plane including the axis of the grip bar is an arc shape. The X-ray imaging apparatus according to any one of claims 1 to 3 ,
An X-ray imaging apparatus in which the depth of the recess is 3.5 mm to 4.0 mm. The X-ray imaging apparatus according to any one of claims 1 to 4 ,
An X-ray imaging apparatus in which the pitch of the recesses is 20 mm to 24 mm. An X-ray tube, an X-ray detector that detects X-rays irradiated from the X-ray tube and passed through the subject, and disposed between the X-ray tube and the X-ray detector, In an X-ray imaging apparatus comprising a top plate that can be placed and a gripping rod disposed on the surface of the top plate,
The grip bar is made of a resin having elasticity and a coefficient of friction that allow the finger of the subject to be caught, and a recess having a shape corresponding to the finger of the subject is An X-ray imaging apparatus characterized by being formed on the entire circumference at a pitch corresponding to a finger interval. The X-ray imaging apparatus according to claim 6 ,
The X-ray imaging apparatus wherein the resin is an ethylene / vinyl acetate copolymer resin. The X-ray imaging apparatus according to any one of claims 1 to 7 ,
The grip bar is an X-ray imaging apparatus arranged along a longitudinal direction or a lateral direction of the top plate.

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