WO2009128166A1

WO2009128166A1 - X-ray radiograph apparatus

Info

Publication number: WO2009128166A1
Application number: PCT/JP2008/057599
Authority: WO
Inventors: 貴由岡村
Original assignee: 株式会社島津製作所
Priority date: 2008-04-18
Filing date: 2008-04-18
Publication date: 2009-10-22
Also published as: JP4952961B2; CN102006827B; CN102006827A; JPWO2009128166A1

Abstract

An X-ray radiograph apparatus with a top board (2) furnished with a pair of guide grooves (3) designed to allow fitting of a footstool by the guide grooves (3) and also allow fitting of an extension top board (8) by the guide grooves (3). In the apparatus, a pair of heads (10) are combined with a pair of rotary shafts. Each of the heads (10) is fitted to an inferior end of the respective rotary shaft. Upon abuttal of an extension top board (8) on the terminal edge of a top board (2), the heads (10) are inserted in the guide grooves (3) from openings (4) thereof and securely fitted in the interiors of the guide grooves (3). Thereafter, the rotary shafts and heads (10) are rotated by rotational operating means (12). The rotary shafts and heads (10) are rotated to an extent of 90°.

Description

X-ray fluoroscopic equipment

This invention relates to an X-ray fluoroscopic apparatus.

In an X-ray fluoroscopic apparatus having a top plate on which a subject's body is placed, a pair of guide grooves are often provided on the top plate. The guide groove has an opening that opens upward, extends in the length direction of the top plate, and is formed along both side edges of the top plate. The opening has a width smaller than the width of the inside of the guide groove, and is formed at the center in the width direction of the guide groove (see Patent Document 1).

Therefore, for example, when a shoulder having a cross-sectional shape corresponding to the guide groove is provided on the shoulder rest used by the subject and this is fitted into each guide groove, the leg of the shoulder rest is moved along each guide groove. The position can be adjusted arbitrarily. Moreover, the leg portion does not come out from the opening of the guide groove. The same applies to the grip bar that the subject grips.

It is also possible to provide a similar leg on the platform on which the subject's feet are placed, fit the platform leg into the inside of each guide groove, and attach the platform with each guide groove. However, in the case of a platform, when the subject's feet are placed on the platform and the top is upright, the legs of the platform will fall out of the end of the guide groove on the subject's foot side of the platform so that the subject and the platform will not accidentally fall. It is necessary to. Therefore, a stopper is often provided at the end of each guide groove on the subject's foot side of the top board. In this case, when the leg portion of the step is fitted in each guide groove, moved along each guide groove, and engaged with the stopper, the step leg does not come off from the end of the guide groove.

Furthermore, on the subject's foot side of the top plate, the extended top plate is often abutted against the end of the top plate, and the top plate is often extended by the extended top plate. It is also conceivable that a protrusion having a cross-sectional shape corresponding to the guide groove is provided on the extended top plate, which is inserted from the end of each guide groove, fitted into the inside of each guide groove, and the extended top plate is attached by each guide groove. However, as described above, a stopper is provided at the end of each guide groove. In this case, the protrusion of the extension top plate cannot be inserted from the end of each guide groove, and the extension top plate is inserted by each guide groove. It cannot be installed.

Therefore, according to the present invention, in an X-ray fluoroscopic apparatus having a top plate with a pair of guide grooves, a platform can be attached by each guide groove, and an extended top plate can also be attached by each guide groove. It was made for the purpose.
JP-A-8-131433

According to the present invention, a pair of guide grooves are provided on the top plate on which the subject is placed, and the guide grooves have openings that open upward, extend in the length direction of the top plate, and along both side edges of the top plate. It is formed. The opening has a width smaller than the width inside the guide groove, and is formed at the center in the width direction of the guide groove. Furthermore, a stopper is provided at the end of each guide groove on the subject's foot side of the top board. Therefore, the leg portion of the platform on which the subject's foot is placed can be fitted into each guide groove, moved along each guide groove, and engaged with the stopper.

Furthermore, according to the present invention, on the subject's foot side of the top board, the extended top board is abutted against the end of the top board, and the top board is extended by the extended top board. Furthermore, when a pair of protrusion part protrudes from an extended top plate and abuts an extended top plate to the terminal end of a top plate, each protrusion part is arrange | positioned above each guide groove. Further, the pair of heads is combined with the pair of rotation shafts, and the rotation shafts are attached to the protrusions at positions corresponding to the guide grooves. The rotation axis extends vertically and can rotate. Further, each head is provided at the lower end of each rotating shaft. The head has a width equal to or smaller than the width of the opening of the guide groove and is disposed horizontally. Therefore, when the extended top plate is brought into contact with the end of the top plate, each head can be inserted from the opening of each guide groove and fitted inside each guide groove. Furthermore, the head has a length longer than the width of the opening of the guide groove and equal to or shorter than the width of the inside of the guide groove. After each head is fitted, the rotation shaft and the head are rotated by the rotation operation mechanism. The rotating shaft and head rotate 90 °.

In a preferred embodiment, a lifting operation mechanism is provided between the protrusion and the rotating shaft. After the rotating shaft and the head are rotated, the rotating shaft and the head are pulled up by the lifting operation mechanism, and each head is pressed against the inner wall surface of each guide groove. It is done.

It is a side view which shows the Example of this invention. It is a disassembled perspective view of the top plate and extension top plate of FIG. 2A is a cross-sectional view of the guide groove, head, rotating shaft, and first and second knobs of FIG. 2, and B is a plan view of the first knob. 3A is a sectional view showing a state in which the head of FIG. 3 is rotated and pulled up, and B is a plan view of the first knob.

Explanation of symbols

2 Top plate 3 Guide groove 4 Opening 6 Inner wall surface 7 Stopper 8 Extension top plate 9 Protruding portion 10 Head 11 Rotating shaft 12 First knob 15 Second knob

Hereinafter, embodiments of the present invention will be described.

FIG. 1 shows an X-ray fluoroscopic apparatus according to the present invention. This apparatus has an X-ray tube 1 for fluoroscopic imaging of a subject.

Furthermore, as shown in FIG. 2, in this apparatus, a pair of guide grooves 3 are provided on the top plate 2 on which the subject's body is placed, and the guide grooves 3 have an opening 4 that opens upward. 2 is formed along both side edges of the top plate 2. In this embodiment, a pair of auxiliary members 5 are arranged along both side edges of the top plate 2 and are fixed to the upper surface and side surfaces thereof, and each auxiliary member 5 is provided with each guide groove 3. As shown in FIG. 3A, the guide groove 3 has a rectangular cross-sectional shape, the inside of the guide groove 3 is formed by horizontal and vertical inner wall surfaces 6, and the opening 4 has a width W 1 inside the guide groove 3. It has a smaller width W2, extends in the length direction of the top plate 2, and is formed at the center of the guide groove 3 in the width direction.

Therefore, for example, when a leg part having a cross-sectional shape corresponding to the guide groove 3 is provided on the shoulder rest used by the subject and this is fitted into the inside of each guide groove 3, the leg part of the shoulder rest along the guide groove 3 is provided. The position can be arbitrarily adjusted. Moreover, the leg portion does not come out from the opening 4 of the guide groove 3. The same applies to the grip bar that the subject grips.

It is also possible to provide similar legs on the platform on which the subject's feet are placed, fit the platform legs into each guide groove 3, and attach the platform with each guide groove 3. Further, a stopper 7 is provided at the end of each guide groove 3 on the subject's foot side of the top board 2, and the leg portion of the platform is fitted into each guide groove 3, and moved along each guide groove 3, When engaged with the stopper 7, when the subject's feet are placed on the platform and the top plate 2 is erected, the leg of the platform does not come off from the end of the guide groove 3.

Furthermore, on the subject's foot side of the top board 2, the extended top board 8 is abutted against the end of the top board 2, and the top board 2 is extended by the extended top board 8. Therefore, for example, when the subject's body is shifted in the length direction of the top 2 and the subject's head is fluoroscopically photographed by the X-ray tube 1, the subject's feet can be placed on the extended top 8.

Furthermore, in this apparatus, the pair of projecting portions 9 project from the extended top plate 8. The protruding portion 9 is plate-shaped, and is attached and fixed to the upper surface of the extended top plate 8. When the extended top plate 8 is abutted against the end of the top plate 2, the protrusions 9 are disposed above the guide grooves 3. Further, the pair of heads 10 are combined with the pair of rotating shafts 11, and the rotating shafts 11 are attached to the protruding portions 9 at positions corresponding to the guide grooves 3. The rotating shaft 11 has a diameter equal to or smaller than the width W2 of the opening 4 of the guide groove 3, and extends vertically and is rotatable. Further, each head 10 is provided at the lower end of each rotating shaft 11. The head 10 is formed of a rectangular parallelepiped, has a width equal to or smaller than the width W2 of the opening 4 of the guide groove 3, and is disposed horizontally.

Therefore, when the extended top plate 8 is brought into contact with the end of the top plate 2, each head 10 can be inserted from the opening 4 of each guide groove 3 and can be fitted inside each guide groove 3. When fitted, the stopper 7 is disposed between the head 10 and the extended top plate 8. Therefore, regardless of the stopper 7, each head 10 can be easily fitted and the extended top plate 8 can be brought into contact with the end of the top plate 2. Furthermore, each protrusion 9 can be engaged with the upper surface of each auxiliary member 5, and when engaged, the opening 4 of each guide groove 3 is covered by each protrusion 9. FIG. 3A shows this state.

Further, as shown in FIG. 4A, the head 10 has a length L that is longer than the width W2 of the opening 4 of the guide groove 3 and equal to or shorter than the width W1 inside the guide groove 3. After each head 10 is fitted, the rotary shaft 11 and the head 10 are rotated by the rotation operation mechanism. The rotating shaft 11 and the head 10 rotate 90 °. Therefore, the extension top plate 8 can be attached by each guide groove 3. Each head 10 does not come out of the opening 4 of the guide groove 3.

The rotation operation mechanism is composed of a ring-shaped first knob 12, and its inner hole is fitted to the outer peripheral surface of the rotating shaft 11, and the first knob 12 engages with the upper surface of the protruding portion 9. Furthermore, the rotating shaft 11 has a pin 13 extending in the radial direction, and the pin 13 penetrates the rotating shaft 11 and protrudes on both sides thereof. On the other hand, the first knob 12 has a pair of slots 14, which are formed on the inner peripheral surface of the first knob 12 and extend in the axial direction thereof. Further, in the radial direction of the first knob 12, the slots 14 face each other, and both ends of the pin 13 are fitted into the slots 14 of the first knob 12. Therefore, when the first knob 12 is rotated around the rotation shaft 11, the rotation shaft 11 and the head 10 can be rotated by the pin 13 and the slot 14.

Further, a pulling operation mechanism is provided between the protruding portion 9 and the rotating shaft 11. After the rotating shaft 11 and the head 10 are rotated, the rotating shaft 11 and the head 10 are pulled up by the pulling operation mechanism, and each head 10 is moved to each guide. It is pressed against the inner wall surface 6 of the groove 3. FIG. 4A shows this state. Therefore, the extended top plate 8 is fixed and stabilized by the protruding portion 9, the rotating shaft 11, and the head 10.

The pulling operation mechanism is composed of a ring-shaped second knob 15 and has a screw groove formed in its inner hole. Further, a screw groove is formed on the outer peripheral surface of the rotating shaft 11 and is screwed into the screw groove of the second knob 15, and the second knob 15 engages with the upper surface of the first knob 12. Accordingly, the first and

second knobs

12 and 15 are provided between the protruding portion 9 and the rotating shaft 11, and the rotating shaft 11 and the head 10 are supported by the second knob 15, and the second knob 15 is rotated. When rotating around the shaft 11, the rotating shaft 11 and the head 10 are pulled up by the screw groove. Therefore, in each guide groove 3, each head 10 is pressed against the upper horizontal inner wall surface 6, the reaction force is transmitted to the rotating shaft 11 and the second knob 15, and the first knob 12 and the protrusion 9 are Receive. In this way, the extension top plate 8 is fixed.

Further, a slot 16 is formed in the first knob 12, and a pin 17 is inserted in the slot 16. As shown in FIG. 3B, the slot 16 has an arc shape and extends in the axial direction of the first knob 12. The rotation axis 11 is formed over an angle range of 90 °. The pin 17 is composed of a bolt, extends in the axial direction of the first knob 12, is screwed onto the upper surface of the protruding portion 9, and is fixed. Therefore, when the first knob 12 is rotated around the rotation axis 12, the pin 17 is displaced along the slot 16, and when the first knob 12 is rotated 90 ° as shown in FIG. The pin 17 engages with one end, and the first knob 12 cannot be rotated any further. In this embodiment, two slots 16 are formed with an angular interval of 180 ° around the rotating shaft 11, and two pins 17 are provided with an angular interval of 180 ° around the rotating shaft 11. The pins 17 are inserted into the slots 16 and screwed onto the upper surface of the protrusion 9 to be fixed. Accordingly, each pin 17 is displaced along each slot 16 and engages with one end of each slot 16. Thereafter, when the first knob 12 is rotated in the reverse direction, the pin 17 is displaced along the slot 16, and when the first knob 12 is rotated 90 °, the pin 17 is engaged with the other end of the slot 16, The first knob 12 cannot be rotated any further. Therefore, the rotating shaft 11 and the head 10 can be rotated by 90 °.

Furthermore, two depressions 18 are formed around the rotary shaft 11 at an angular interval of 90 ° on the upper surface of the protrusion 9. Further, an axial hole 19 is formed in the lower surface of the first knob 12, a spring 20 is accommodated in the axial hole 19, a small ball 21 is fitted, and the small ball 21 is elastically biased by the spring 20, A small ball 21 is fitted in the recess 18. Therefore, when the first knob 12 is rotated around the rotation shaft 11, the small ball 21 is retracted into the axial hole 19, detached from the one recess 18, and moved along the upper surface of the protrusion 9. When the first knob 12 is rotated 90 °, the small sphere 21 is fitted into the other recess 18. In this embodiment, four indentations 18 are formed at an angular interval of 90 ° around the rotation axis 11, two small spheres 21 are provided at an angular interval of 180 ° around the rotation axis 11, Each small ball 21 is fitted into one recess 18, and each small ball 21 is fitted into the other recess 18 when the first knob 12 is rotated 90 °. Therefore, when the first knob 12 is rotated by 90 °, it can be confirmed by the small ball 21.

Therefore, in the case of this apparatus, the leg of the step can be fitted into each guide groove 3, and the step can be attached by each guide groove 3. Furthermore, a stopper 7 is provided at the end of each guide groove 3 on the subject's foot side of the top board 2. When the leg portion of the step is moved along the guide groove 3 and engaged with the stopper 7, The leg portion does not come off from the end of the guide groove 3.

Further, when the extended top plate 8 is brought into contact with the end of the top plate 2 on the subject's foot side of the top plate 2, each head 10 is inserted from the opening 4 of each guide groove 3 and fitted into each guide groove 3. be able to. Thereafter, when the rotary shaft 11 and the head 10 are rotated by the first knob 12, the extended top plate 8 can be attached by the respective guide grooves 3. The rotary shaft 11 and the head 10 can be pulled up by the second knob 15 and the extension top plate 8 can be fixed and stabilized. Therefore, it is not necessary to insert each head 10 from the end of each guide groove 3, and even if the stopper 7 is provided at the end of each guide groove 3, there is no problem.

In this embodiment, the guide groove 3 has a rectangular cross section, but this is not necessarily required. A so-called groove may be provided as a guide groove. In short, the opening 4 may have a width W2 smaller than the width W1 inside the guide groove 3 and may be formed at the center in the width direction of the guide groove 3. Furthermore, although what used the 1st and

2nd knobs

12 and 15 for the rotation operation mechanism and the raising operation mechanism was demonstrated, it is also possible to use other things.

Claims

A pair of guide grooves are provided on the top plate on which the subject's body is placed, and the guide grooves have openings that open upward, extend in the length direction of the top plate, and are formed along both side edges of the top plate. The opening has a width smaller than the width of the inside of the guide groove, and is formed at the center in the width direction of the guide groove, and further on the subject foot side of the top plate, at the end of each guide groove. X-ray fluoroscopic imaging provided with a stopper, in which a leg of a platform on which the subject's foot is placed is fitted into each guide groove, moved along each guide groove, and engaged with the stopper A device,
On the subject's foot side of the top plate, an extended top plate that abuts the end of the top plate and extends the top plate,
When projecting from the extended top plate and abutting the extended top plate to the end of the top plate, a pair of projecting portions disposed above each guide groove,
A pair of rotating shafts which are attached to the respective projecting portions, extend vertically and are rotatable at positions corresponding to the respective guide grooves;
Provided at the lower end of each rotating shaft, having a width equal to or smaller than the width of the opening of the guide groove, disposed horizontally, and when the extended top plate is butted against the end of the top plate, It can be inserted from the opening of each guide groove and can be inserted into the inside of each guide groove, and is longer than the width of the opening of the guide groove and equal to or shorter than the width of the inside of the guide groove. A pair of heads having a length;
An X-ray fluoroscopic imaging apparatus comprising: a rotary operation mechanism that rotates the rotary shaft and the head by 90 ° after the heads are fitted.
And a lifting operation mechanism that is provided between the protrusion and the rotation shaft, lifts the rotation shaft and the head after the rotation of the rotation shaft and the head, and presses each head against the inner wall surface of each guide groove. The X-ray fluoroscopic apparatus according to claim 1.