JP5161615B2 - Bed apparatus for diagnostic imaging equipment - Google Patents

Description

  The present invention relates to a bed apparatus used in an image diagnostic apparatus such as an X-ray CT apparatus, for example, and has a mounting mechanism that facilitates attachment / detachment of an attachment such as a headrest attached to a top plate of the bed apparatus. Relates to the device.

  For example, a subject who is inspected (photographed) by an image diagnostic apparatus such as an X-ray CT apparatus or a magnetic resonance imaging apparatus is laid down on the top plate of the bed apparatus and goes to the imaging unit of the image diagnostic apparatus. Positioned. In this case, an attachment such as a headrest or an armrest is attached to the tip of the top plate of the bed apparatus as necessary. Here, the headrest is used to support the head when photographing the head of the subject, and the armrest is used to support both of the subject when photographing the upper body of the subject. It is used to support the upper arm near the head of the subject so that the arm does not interfere with the imaging.

  As a conventional attachment mechanism in the case of attaching an attachment such as a headrest or an armrest to the top plate, as shown in FIG. 6, a mechanism in which the connection portion 3 a of the headrest 3 is inserted into the tip portion of the top plate 1 is known. (For example, refer to Patent Document 1).

  That is, the top plate 1 is placed on a couch device (not shown), and is reciprocated horizontally in the longitudinal direction toward a gantry (not shown) of the diagnostic imaging apparatus. An insertion hole 1a for receiving the connection portion 3a of the headrest 3 is formed in the tip portion of the top plate 1 facing the gantry side. Furthermore, two fixing holes 1b for fixing the connecting portion 3a of the inserted headrest 3 are formed on the top plate 1 at intervals. The connection portion 3a of the headrest 3 is provided with a pair of fixing leaf springs 3b having protrusions at the tip so as to engage with the fixing hole 1b. Further, the headrest 3 includes a connection portion 3a. A mounting portion 3d for mounting the subject's head is formed so as to be continuous.

Therefore, by inserting the connecting portion 3a of the headrest 3 into the insertion hole 1a of the top plate 1, the headrest 3 is connected to the top plate 1, and the protrusion at the tip of the fixing plate spring 3b is inserted into the fixing hole 1b. By engaging, the headrest 3 is fixed to the top plate 1 and rotation in the lateral direction is also prevented. When the headrest 3 is removed from the top plate 1, the tips of both fixing leaf springs 3b are pushed downward with the fingertips of both hands of the operator, and the tip of the fixing leaf spring 3b and the fixing hole 1b The headrest 3 was pulled out while releasing the engagement.
JP 2003-135446 A

  By the way, when exchanging the headrest 3 or exchanging it with another attachment, it is necessary to first remove the currently attached headrest 3 and the like from the top plate 1 as described above. As described above, the work at that time is as follows. First, the tips of both fixing plate springs 3b are pushed downward with the fingertips of both hands of the operator and the engagement between the tips of the fixing plate springs 3b and the fixing holes 1b. As a next step, it was necessary to pull out the headrest 3 while releasing the engagement.

  One problem in this case is that both hands must be used, and the headrest 3 is pulled out in the horizontal direction with the fingertips of both hands disengaging the tip of the fixing leaf spring 3b from the fixing hole 1b. These two operations must be executed simultaneously, and this is a particularly troublesome and troublesome work, especially when a female engineer with a small hand and weak power is working.

  The second problem is that the headrest 3 has to be pulled out in the horizontal direction, so that a work space for that purpose is required. That is, as shown in FIG. 7, the bed apparatus 2 having the top plate 1 is installed so that one end side in the longitudinal direction faces the gantry 4 of the diagnostic imaging apparatus. The distance between the front surface of the gantry 4 and the top of the top plate 1 at the most retracted position on the bed apparatus 2 is normally only about 250 mm. On the other hand, since the headrest 3 attached to the tip of the top plate 1 has a length of about 300 mm, when the headrest 3 is attached to or removed from the top plate 1, the height position of the top plate 1 is set to the image diagnostic apparatus. The work must be performed in accordance with the height of the photographing unit 4a formed on the gantry 4 of the camera.

  That is, the connecting portion 3a of the headrest 3 is connected to the top plate 1 in a state where the mounting portion 3d side of the headrest 3 is once inserted into the photographing portion 4a side of the gantry 4 using the space of the hollow imaging portion 4a. It had to be inserted into the insertion hole 1a. When the subject gets on or goes down the top board 1, the bed apparatus 2 is usually placed at a low position so that the person can easily get on and off the board. Therefore, if the subject tries to replace the headrest 3 after getting off the top plate 1, the tip of the headrest 3 interferes with the gantry 4 at a low position of the bed apparatus 2, and the top plate cannot be inserted or removed again. The bed apparatus 2 has to be driven so that the height of 1 is raised to the height of the photographing unit 4a of the gantry 4, and the work becomes troublesome.

  Further, when the bed apparatus 2 is placed at a low position and the headrest 3 is to be inserted and removed, the headrest 3 hits the gantry 4 or damages the gantry 4.

  The present invention has been made to solve such problems.

  In order to solve the above-described problem, the invention described in claim 1 is a bed apparatus for an image diagnostic apparatus, a top plate on which a subject is placed, an attachment coupled to the top plate, and the attachment And an attachment mechanism for coupling the top plate to the top plate. The attachment mechanism includes a hollow insertion hole formed at the tip of the top plate, and two upper or lower surfaces of the insertion hole. An engaging portion and a notch formed between the engaging portions; a connecting portion for inserting into the insertion hole of the top plate on one end side of the attachment; and a width from the connecting portion A spring body formed by cutting out into a shape that widens the width on the tip side, leaving a narrow root portion, and an engagement portion of the insertion hole of the top plate provided integrally with the tip side of the spring body, respectively And a protrusion to be used.

Further, an invention according to claim 2, in the image diagnostic apparatus for bed apparatus according to claim 1 Symbol placement, connecting part of the attachment is formed in a hollow plate-shaped, than the top and bottom surfaces and the thickness of the side wall It is characterized by being formed thick.

  As shown in the section of the means for solving the above problems, according to the invention of each claim described in the claims of the present invention, the following effects can be obtained.

  According to the first to third aspects of the present invention, the engagement between the engaging portion and the protrusion can be released by simply pressing between the protrusions with a finger of one hand. An exchange operation for attaching or detaching an attachment to the apparatus can be easily performed even by a worker with a small hand and a weak force.

  According to the fourth aspect of the invention, the attachment replacement operation can be performed at any position regardless of the height position of the bed apparatus. In particular, the attachment replacement operation can be performed in a state where the height of the top plate is set at a low position where the subject can easily get on and off, so that the burden on the operator can be reduced.

  According to invention of Claim 5, the intensity | strength of the connection part of an attachment can be raised more.

  Hereinafter, an embodiment of a bed apparatus for an image diagnostic apparatus according to the present invention having an attachment mechanism for coupling an attachment to a top plate will be described in detail with reference to FIGS. In these drawings, the same portions are denoted by the same reference numerals. Further, description will be made with reference to FIGS.

  FIG. 1 is a plan view of, for example, a headrest 30 attached to a top plate of a bed apparatus, which is shown to explain Embodiment 1 of the bed apparatus for an image diagnostic apparatus according to the present invention. The headrest 30 is formed with a mounting portion 32 for mounting the subject's head so as to be continuous with the connection portion 31, and has the same purpose as the headrest 3 described with reference to FIGS. 6 and 7. Thus, the connecting portion 31 is coupled so as to be inserted into the insertion hole 1 a at the tip of the top plate 1. Since the structure on the side of the insertion hole 1a is the same as that shown in FIGS. 6 and 7, the illustration is omitted.

  In the present embodiment, the conventional connection part 3a of the headrest 3 is provided with a pair of fixing leaf springs 3b, and the leaf springs are made into one leaf spring 33 by devising the shape of the leaf springs. 33, two protrusions 341 and 342 for engaging with two fixing holes 1b formed at intervals in the insertion holes 1a of the top plate 1 are formed.

  That is, for example, the headrest 30 for an X-ray CT apparatus is made of a material such as carbon fiber reinforced plastics (CFRP) that absorbs less X-rays, but in order to further reduce X-ray loss, It has a hollow plate shape. Therefore, for example, as shown in FIG. 1, the upper surface of the connection portion 31 is cut into a substantially triangular shape so as to spread toward the mounting portion 32 side, leaving a portion indicated by a broken line with a reference numeral 33a on the end side. By slightly pulling up and pressurizing the wide tip side with the portion denoted by reference numeral 33a as a base, a single leaf spring 33 is formed which has an elastic force so that it is slightly warped upward. For example, spherical protrusions 341 and 342 are fixed at a predetermined interval on the tip side of 33. That is, the leaf spring 33 is formed by cutting out from the connection portion 31 so as to have a shape in which the width on the distal end side is widened, leaving the narrow root portion 33a.

  Therefore, the protrusion 341 formed on the leaf spring 33 by inserting the tip of the connecting portion 31 of the headrest 30 into the insertion hole 1a of the top plate 1 shown in FIGS. 342 is engaged with two fixing holes 1b formed in the insertion hole 1a, and the top plate 1 and the headrest 30 are coupled. The size of the insertion hole 1a is, for example, about 200 mm in width and 150 mm in depth. The headrest 30 inserted therein has a total length of 300 mm, of which the length of the connection portion 31 is about 150 mm, and the protrusions 341 and 342 are It is formed at a position of about 50 mm from the boundary between the connection part 31 and the mounting part 32. Further, the protrusions 341 and 342 are not limited to a spherical shape, and may have a suitable shape such as a wedge shape.

  Next, an operation for removing the headrest 30 thus combined from the top plate 1 will be described.

  That is, when the headrest 30 is removed from the top plate 1, as shown by the broken line denoted by reference numeral 33 b in FIG. 1, between the protrusions 341 and 342 formed at intervals on the front end side of the leaf spring 33. Is pressed with the finger of one hand of the operator. As a result, the leaf spring 33 is pushed back and the protrusions 341 and 342 are also moved downward, and the engagement with the fixing hole 1b formed in the insertion hole 1a is released. Therefore, the headrest 30 can be easily detached from the top board 1 by slightly pulling out the headrest 30 with the other hand of the operator and then pulling out the headrest 30 with both hands.

  As described above, conventionally, the engagement with the fixing hole 1b could not be released unless the tips of the two fixing plate springs 3b were pushed down at the same time. By pushing down, both the protrusions 341 and 342 can be removed from the fixing hole 1b, so that the replacement work of the headrest 30 and the like can be performed very easily. In addition, what is necessary is just to mark the position which should be pushed down on the surface of the top plate 1, or to cut out the surface of the top plate 1 of the part. Further, a fixing hole 1b is provided on the lower surface of the insertion hole 1a of the top plate 1, and a leaf spring 33 formed on the connection portion 31 of the headrest 30 is warped downward slightly on the lower surface of the connection portion 31 so as to correspond thereto. It is good as something like that.

  The width dimension of the root portion 33a of the leaf spring 33 increases as the width increases, but the spring force increases accordingly, and it is large to push down and remove both protrusions 341 and 342 from the fixing hole 1b. Power is required. Therefore, the leaf spring 33 is formed in a substantially triangular shape so that the portion where the protrusions 341 and 342 are formed has the maximum width and the width of the base portion 33a is the same as that of the conventional fixing leaf spring 3b. is there. However, the leaf spring 33 is not limited to a triangular shape, and may have a T shape. The base portion is thin so that the portion provided with the protrusions 341 and 342 can be pushed down with an appropriate force. Any shape can be used.

  Next, based on the concept of this embodiment, several embodiments in which both the protrusions 341 and 342 are removed from the fixing holes by pushing down between the protrusions 341 and 342 will be described with reference to FIGS. Will be described with reference to FIG.

  One embodiment thereof is shown in FIG. 2, where FIG. 2A is an enlarged plan view showing the connecting portion 31 of the headrest 30, and FIG. 2B is a connecting portion 31 of the headrest 30. 2 (a) is shown for explaining the state in which is inserted into the insertion hole 11 (equivalent to the insertion hole 1a shown in FIG. 6) of the top board 10 (equivalent to the top board 1 shown in FIG. 6). It is sectional drawing in alignment with the AA of ().

  As shown in FIG. 2A, in this embodiment, as the leaf spring 33 formed on the connection portion 31, two L-shaped leaf springs 331 and 332 are cut out from the connection portion 31 substantially in parallel so as to face each other. Form. In addition, the part which attached | subjected the code | symbol 31a, 31b has shown the part which notched the connection part 31 in order to cut out the leaf | plate springs 331 and 332. FIG. The protrusions 341 and 342 are fixed to the tip portions of the leaf springs 331 and 332, that is, L-shaped root portions, respectively. The protrusions 341 and 342 are respectively engaged with fixing holes 12 (equivalent to the fixing holes 1b shown in FIG. 6) formed in the insertion holes 11 of the top plate 10 shown in FIG. 2 (b). belongs to.

  Furthermore, the front-end | tip part vicinity which the leaf | plate springs 331 and 332 oppose is couple | bonded with the connection member 36 of the same material as the connection part 31, for example. Then, the plate springs 331 and 332 are processed so that the tip side is slightly warped upward so as to have an elastic force with the connection portion 31 serving as a base as a base. Accordingly, the connecting member 36 that combines the leaf springs 331 and 332 is positioned above the connecting portion 31. When the headrest 30 having the connection portion 31 formed in this way is inserted into the insertion hole 11 of the top plate 10, the protrusions 341 and 342 of the connection portion 31 are for fixing as shown in FIG. The headrest 30 is fixed to the top plate 10 by being engaged with the hole 12.

  Note that the surface portion of the insertion hole 11 where the connecting member 36 is located by inserting the connection portion 31 into the insertion hole 11 of the top plate 10, that is, one fixing hole 12 and the other fixing hole 12. An elongated notch is formed between them, and when the connecting portion 31 is inserted, the connecting member 36 is exposed to the surface of the top plate 10 through the notch.

  Therefore, when removing the headrest 30 from the top plate 10, the connecting member 36 exposed on the surface of the top plate 10 through the elongated notch on the surface of the insertion hole 11 is pushed down with the finger of one hand of the operator, Since both the leaf springs 331 and 332 are pressed down, the engagement between the fixing hole 12 and the protrusions 341 and 342 is released, and the headrest 30 can be pulled out of the top plate 10 with the other hand in this state.

  By the way, instead of connecting the vicinity of the tip end portions of the leaf springs 331 and 332 with the connecting member 36, as shown in FIG. 3, as shown in FIG. The leaf springs 331 and 332 may be cut out in a letter shape to form one leaf spring 33. Also in this case, if the connecting portion 333 is pushed down, the projections 341 and 342 are also moved downward, and the engagement with the fixing hole 12 formed in the insertion hole 11 of the top plate 10 is released. Work with the fingers of your hand. In addition, the surface part of the insertion hole 11 where the connection part 333 will be located is notched similarly to what was shown in FIG. 2, and when the connection part 31 is inserted, it will be in the surface of the top plate 10. Needless to say, the connecting portion 333 is exposed.

  FIG. 4 shows another embodiment. That is, as the leaf spring 33 formed in the connection portion 31, two L-shaped leaf springs 331 and 332 are cut out from the connection portion 31 so as to be opposed to each other, and the tip portions of the leaf springs 331 and 332 are formed. The protrusions 341 and 342 are respectively fixed to the same as shown in FIG. 2, but in this embodiment, the vicinity of the L-shaped tips of the leaf springs 331 and 332 are close to each other and face each other. The bent part is different. Alternatively, the connecting portion 333 in the embodiment shown in FIG. 3 is shaped so as to be cut with a small gap at the intermediate portion.

  Accordingly, it is possible to push down the vicinity of the tip of each of the opposing leaf springs 331 and 332 indicated by the broken line with the reference numeral 33c in FIG. 4 with the finger of one hand of the operator. The protrusions 341 and 342 also move downward, and can be disengaged from the fixing hole 12 formed in the insertion hole 11 of the top plate 10.

  FIG. 5 is a plan view for explaining a second embodiment of the bed apparatus for diagnostic imaging apparatus according to the present invention, and FIG. 5 (a) shows the attachment or removal of the headrest 30 as an attachment to the top plate 10 of the bed apparatus. FIG. 5B shows a state in which the headrest 30 is attached and fixed to the top plate 10. In addition, what was shown with the code | symbol 4 is a mount frame of the diagnostic imaging apparatus, and has the imaging | photography part 4a which is hollow, it is the same as that of what was shown in FIG.

  In this embodiment, as shown in FIG. 5A, the connecting portion 31 of the headrest 30 is formed in a convex shape, the narrow portion on the tip side is denoted by reference numeral 311, and the width on the mounting portion 32 side. The wide portion is indicated by reference numeral 312. The narrow portion 311 and the wide portion 312 are formed to have substantially the same length, or the narrow portion 311 is slightly shorter. Although not shown, a spring body 33 having protrusions 341 and 342 similar to those described in the first embodiment is formed on the wide portion 312 of the connection portion 31.

  On the other hand, the insertion hole 11 for receiving the connection part 31 of the headrest 30 is formed in the tip part of the top plate 10, and the connection part 31 of the inserted headrest 30 is formed on the upper surface of the insertion hole 11. Two fixing holes 12 for fixing are formed at intervals. This is almost the same as the conventional one shown in FIG. However, in the present embodiment, the top surface of the tip of the insertion hole 11 is notched as indicated by reference numeral 13. Therefore, as apparent from FIG. 5A, the distance between the left end of the notch 13 and the end surface of the gantry 4 is longer than the entire length of the headrest 30. The notch 13 is formed to have a size that does not interfere with the narrow tip 311 of the connecting portion 31 of the headrest 30 but interferes with the wide portion 312.

  Therefore, according to the second embodiment, even if the overall length of the headrest 30 is longer than the dimension between the top plate 10 and the gantry 4, the distance between the top plate 10 and the gantry 4 is widened by the notch 13. Therefore, when the headrest 30 is attached to the top plate 10, the headrest 30 is lowered from above between the top plate 10 and the gantry 4, and the narrow end portion 311 of the connection portion 31 of the headrest 30. Is fitted into the notch 13 of the top plate 10.

  Thereafter, by horizontally moving the connecting portion 31 to the insertion hole 11, the protrusions 341 and 342 of the leaf spring 33 formed on the wide portion 312 are inserted into the insertion hole 11 as shown in FIG. Are respectively engaged and fixed in the two fixing holes 12. At this time, since the wide portion 312 of the connecting portion 31 is engaged with both sides of the cutout portion 13, the necessary strength is maintained. However, when it is necessary to further increase the strength of the connecting portion 31, the thickness of both side walls of the connecting portion 31 may be formed thicker than the upper and lower surfaces.

  When the headrest 30 is removed from the top plate 10, the operator uses a leaf spring 33 (not shown) formed on the wide portion 312 of the connection portion 31 exposed at the position of the notch portion 13. Press with your finger. As a result, the engagement between the protrusions 341 and 342 of the leaf spring 33 and the two fixing holes 12 formed in the insertion hole 11 is released. Next, the headrest 30 is pulled out horizontally to the gantry 4 side, and the headrest 30 becomes free with respect to the top plate 10 when the narrow end portion 311 comes to the position of the notch portion 13. It can be removed from the top plate 10.

  Thus, according to the present embodiment, the headrest 30 can be mounted on the top plate with a shorter stroke than before by changing the length of the connecting portion 31 without changing the entire length and shortening the portion where the width interferes with the insertion hole 11. 10 can be removed. Therefore, since the work of replacing the headrest 30 can be performed in a state where the height of the top 10 is set to a low position where the subject can easily get on and off, the burden on the operator can be reduced. In addition, the notch part 13 may be formed in the lower surface of the insertion hole 11, and may be formed in both the upper surface and the lower surface. In this way, the headrest 30 can be exchanged from above or below the top plate 10.

  As described above in detail, according to the present invention, replacement work such as attachment and detachment of the attachment to and from the top plate of the image diagnostic apparatus can be easily performed even by an operator having a small hand and weak force. . At the same time, the attachment replacement operation can be performed at any position regardless of the height position of the bed apparatus. Further, the attachment is not limited to the headrest but may be various ones such as an armrest.

In the bed apparatus for diagnostic imaging apparatuses which concerns on this invention, it is a top view of the headrest attached to a top plate. Example 1 It is the partial top view and sectional drawing of the headrest shown in order to demonstrate the other embodiment of this invention. It is a partial top view of the headrest shown in order to demonstrate other embodiments of the present invention. It is the partial top view of the headrest shown in order to demonstrate other embodiment of this invention. It is explanatory drawing which showed the other Example of the attachment attachment mechanism in the bed apparatus for diagnostic imaging apparatuses which concerns on this invention. (Example 2) It is the perspective view shown in order to demonstrate the attachment attachment mechanism of the conventional in the bed apparatus for diagnostic imaging apparatuses. It is explanatory drawing of the diagnostic imaging apparatus shown in order to demonstrate the problem of the attachment mechanism of the conventional attachment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Top plate 1a Insertion hole 1b Fixing hole 2 Bed apparatus 10 Top plate 11 Insertion hole 12 Fixing hole 13 Notch part 30 Headrest 31 Connection part 32 Mounting part 33 Leaf spring 341 Protrusion 342 Protrusion

Claims (2)

A bed apparatus for diagnostic imaging apparatus,
A top plate on which the subject is placed;
An attachment coupled to this top plate,
An attachment mechanism for coupling the attachment to the top plate,
The attachment mechanism is
The top plate has a hollow insertion hole formed at the tip thereof, and has two engagement portions and a notch formed between the engagement portions on the upper surface or the lower surface of the insertion hole, and the attachment On one end side, a connecting portion for inserting into the insertion hole of the top plate and a base portion having a narrow width are left out from this connecting portion, and the tip side is formed to have a wider width. A bed apparatus for an image diagnostic apparatus, comprising: a spring body; and a protrusion that is integrally provided on a distal end side of the spring body and engages with an engagement portion of an insertion hole of the top plate. Connecting portions of the attachment is formed in a hollow plate-shaped, claim 1 Symbol placement image diagnostic apparatus couch apparatus is characterized in that the formation of the thickness of the side wall thicker than the upper and lower surfaces.

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