JPH0595943A - Fixing apparatus for object to be inspected - Google Patents

Abstract

PURPOSE:To facilitate the fixing and releasing of an object to be inspected by arranging a band for sealing up a part of an object to be inspected fixable at a desired position on a top board where the object to be inspected is placed while a fixing means is provided at the tip or at the side end of the top board to grasp the object to be inspected with the top board. CONSTITUTION:When an object P to be inspected is fixed laid on a top board 1, first, an upper half of the object P is tied with a body band 4A together with both arms and a cushion 15 to be fixed with the engagement of a detaching fastener while bands 4B and 4C are used to fix both legs likewise. A transparent acrylic plate 2 having spacer cushions 3A and 3B as selected according to a breast size or the like of the object P to be inspected mounted on the side facing the top board is closed and a plurality of knob-shaped screws 13R are screwed with a metal 12R for fixing tips to fix the transparent acrylic plate 2. This enables the fixing of the object to be inspected stably and accurately without giving a pain to the object P to be inspected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a subject on a top plate during imaging by a medical image acquisition device such as an X-ray imaging device, an X-ray tomographic imaging device (X-ray CT device), or a magnetic resonance imaging device. The present invention relates to a subject fixing device that fixes the subject in the imaging region.

[0002]

2. Description of the Related Art A conventional apparatus for fixing a subject is used to scan the subject during imaging by a medical image acquisition apparatus such as an X-ray imaging apparatus, an X-ray tomography apparatus (X-ray CT apparatus), or a magnetic resonance imaging apparatus. It is held in the same posture in the photographing area on the plate.

The movement of the subject during the image pickup by the image acquisition device causes various problems such as generation of artifacts on the image, extension of the image pickup time, and re-taking of the image. In particular, when taking an image with a radiation imaging apparatus such as an X-ray imaging apparatus, re-imaging causes a serious problem of increasing the irradiation dose. That is, fixing the subject during the imaging period is
This is one of the extremely important factors for improving the diagnosis efficiency and the imaging efficiency.

A conventional subject fixing device has a structure as shown in FIG. That is, the conventional subject fixing device is interposed between the subject 32 and the subject P, which is provided on the bed main body 31 and is movable in the longitudinal direction thereof. A mat 35 made of a soft material is provided to alleviate the pain of the subject P, and body bands 33 and 34 that seal the subject P and suppress the movement of the subject P. Figure 1
FIG. 3 is a view of the subject fixing device viewed from the longitudinal direction thereof. As shown in FIG. 13, the body band 33 has a detachable fastener (male) 33a attached to one end thereof, and a detachable fastener (male) 33a and a detachable detachable fastener (female) 33a attached to the other end thereof. ′ Is attached, and the detachable fastener 33a and the detachable fastener (female) 33a ′ engage with each other to seal the body including both arms of the subject P and suppress the movement of the subject P. .. A removable fastener (male) 36a is mounted above the mat 35, and a removable fastener (male) 36a and a removable fastener (female) 36a 'which is removable from the body band 33.
Is attached and the detachable fastener (male) 36a and the detachable fastener (female) 36a 'are engaged with each other, so that the subject P is fixed to a desired position on the mat 35 while being sealed by the body band 33. It is supposed to do.

However, when the subject P cannot control his / her behavior by his / her will due to autonomic imbalance, or when the photographing period is very long, the subject P
Has great pain to maintain the same posture. Therefore, the subject P moves against the subject fixing device. This is due to the drawback that the wearing force of the detachable fastener is usually weaker than the muscle force of the subject P.

It should be noted that this drawback can be solved by using a strong fixing member such as a metal buckle instead of the detachable fastener to increase the mounting force.
When imaging with a radiation imaging apparatus such as a line tomography apparatus, providing a part made of a material having low radiation transparency in the imaging area causes the image of the part to appear in the image, which is very useful for diagnosis using the image. It is not desirable because it affects.

Further, if a large number of parts of the subject are fixed by using a large number of bands, the fixing of the subject can be made more complete. However, it is troublesome to attach them as the number of bands increases. This is also undesirable.

Recently, a fixing auxiliary component, for example, a shoulder receiving component as shown in FIG.
Although it is attempted to further improve the fixation performance of the subject by using the arm receiving component used when performing the IV elbow injection as shown in FIG. 5, none of them is perfect.

[0009]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a subject fixing device which can fix the subject during a photographing period without causing pain to the subject and can easily set or release the fixed state. Is to provide.

[0010]

A subject fixing device according to the present invention is provided so that a subject on which a subject is placed can be fixed at a desired position within a predetermined range on the top. A band that seals a part of the subject,

The top portion of the subject is supported by the top and side edges of the top plate and provided to face the top plate, and the other portion of the subject is sandwiched together with the top plate so that the other portion of the subject is placed on the top. And means for fixing on the plate.

[0012]

According to the present invention, a part of the subject is sealed with a band at a desired position within a predetermined range on the top in order to fix the subject placed on the top. By fixing the other part of the subject together with the top plate on the top plate, it can be fixed during the imaging period without giving pain to the subject and can be easily fixed. It can be set or released.

[0013]

Embodiments will be described below with reference to the drawings. 1 is a side view of a subject fixing device according to an embodiment of the present invention with a subject fixed, and FIG. 2 is a front view thereof.

As shown in FIGS. 1 and 2, the main components of the subject immobilizing apparatus according to this embodiment are movably provided on a bed body (not shown) on which a subject P is placed. 1
And a band 4A for sealing the body including the arm of the subject P
And bands 4B, 4 for sealing together the two limbs of the subject P
C and a transparent acrylic plate 2 that sandwiches the subject P with the top plate 1. The dotted line S shown in FIGS. 1 and 2
R1 and SR2 indicate the range of the photographing area.

As shown in FIG. 7, the top plate 1 has a tip fitting 14, a desorption fastener 15a ', side fixing portions 11JR and 11JL, a rail 5, which will be described later, on its surface, and an engaging portion 12JR at the tip. , 12JL. The rail 5 is shown in FIG.
It has a cross-sectional shape as shown in FIG. 1 and is provided with a guide groove 5a into which a base 6b described later can be inserted. The length of the rail 5 is about 70 cm.

FIG. 3 is a perspective view of the transparent acrylic plate 2,
FIG. 4 is a perspective view of a spacer cushion mounted on the transparent acrylic plate 2. The transparent acrylic plate 2 is not limited to the transparent acrylic plate as long as it has good radiation transparency, and may be another type of plate, for example, an opaque plate, but here the field of view of the subject is opened to some extent. Both shall use a transparent acrylic plate to alleviate their mental distress. The transparent acrylic plate 2 has a flat plate shape with both ends folded as shown in FIG. 3, and the ends of the folded parts are engaged with the engaging portions 2JR and 2JL of hinges 10R and 10L described later. Equipped with engaging portions 10hR and 10hL to be connected, and at the other end, engaging portions 12hR and 12hL that engage with engaging portions 2hR and 2hL of tip fixing fittings 12R and 12L described later, and On the back side, spacer cushions 3A and 3B shown in FIG.
The removable fasteners (male) 3a, 3b and the removable fasteners (female) 3a ', 3b' are attached. The size of the transparent acrylic plate 2 is usually 1 cm in thickness, 50 cm in width, and 11 in length.
0 cm is preferable. The spacer cushion is made of a material whose shape is slightly changed according to the physical constitution such as the chest thickness of the subject P, for example, styrene foam or sponge. It is desirable to prepare various spacer cushions of various shapes and sizes in advance. When actually fixing the subject P, the spacer cushions 3A and 3B selected in advance according to the physique of the subject P are attached to the back surface of the transparent acrylic plate 2 (the mounting surface of the removable fasteners (male) 3a and 3b). I will be wearing it.

FIG. 5 is a view of the transparent acrylic plate 2 and the top plate 1 viewed from the direction of arrow D1 in FIG. 1, and FIG. 6 is a view of the transparent acrylic plate 2 and the top plate 1 viewed from the direction of arrow D2 of FIG. Is. As shown in FIGS. 5 and 6, the transparent acrylic plate 2 is supported by the front end fixing metal fittings 12R, 12L and the side fixing metal fittings 11R, 11L and faces the front half of the top plate 1. Is provided. FIG. 7 is a diagram showing a joint relationship of each part for supporting the same. Side fixing parts 11JR and 11JL that engage with the engaging parts 1JR and 1JL of the side fixing fittings 11R and 11L are provided in the substantially central portion of the top plate 1 and the side, and the side fixing fittings 11R and 11L are attached to the side. Fix at the fixed parts 11JR and 11JL. The engaging portions 1JR and 1JL and the side fixing portions 11JR and 11JL may be engaged with each other by using screws, bonding or other fixing methods. Side fixing part 1
The other engaging portions 10JR and 10JL of 1JR and 11JL are hinges 1
The hinges 10R, 10L are fixed to one ends of the side fixing portions 11JR, 11JL by engaging with the engaging portions 11HR, 11HL of 0R, 10L. The hinges 10R and 10L are metal fittings that can rotate in the direction of arrow X in FIG. The hinges 10R and 10L have engaging portions 2JR and 2JL which are engaging portions 10HR and 10 of the transparent acrylic plate 2.
The transparent acrylic plate 2 is held by being fixed to HL. The transparent acrylic plate 2 can be rotated in the arrow X direction by the hinges 10R and 10L as shown in FIG.

Engaging portion 1 of metal fittings 12R, 12L for fixing tips
HR and 1HL are engaging parts 1 provided on the tip side of the top plate 1.
It is fixed to the top plate 1 by engaging 2JR and 12JL. On one end side of the tip fixing metal fittings 12R, 12L, a knob screw 13R,
13L screw receiving holes 2HR, 2HL are provided, and when fixing the subject P, the knob screws 13R, 13L pass through the through holes 12HR, 12HL of the transparent acrylic plate 2 and become the screw receiving holes 2HR, 2HL. The transparent acrylic plate 2 holds the top plate 1 by being screwed.

The body band 4A, as shown in FIG.
A body part including an arm of the subject P and a mat 15 are wrapped around to suppress the movement of the subject P, and a detachable fastener (male) 4a is provided on the surface of one end thereof, and a detachable fastener (female) is provided on the other end rear surface thereof. 4a 'is provided. The detachable fastener (male) 4a and the detachable fastener (female) 4a 'can be detached from each other. The mat 15 is interposed between the top plate 1 and the subject P and is made of a soft material to reduce the pain of the subject P, and is wrapped with the subject P in the body band 4A. Detachable fastener (male) on the top plate side of the mat 15.
15a 'and a detachable fastener (male) 15a that can be attached and detached are attached to assist in fixing the fixed position of the subject P on the top plate 1.

10 and 11 are diagrams showing the structure of the band 4B. Band 4C is also band 4
It has the same configuration as B. The band 4B fixes both limbs of the subject P on the top plate 1. In the band 4B, a detachable fastener (male) 4b is attached to the front surface of one end, a detachable fastener (female) 4b 'is attached to the rear surface of the other end, and a base 6b having a trapezoidal cross section is attached at a substantially central portion. Base 6b
Is movable along the guide groove 5a of the rail 5 (Y direction in FIG. 7), and has a screw receiving hole 6c at the center thereof for engaging with the fixing screw 6a. The fixing screw 6a is rotationally inserted into the screw receiving hole 6c, protruded from the bottom surface portion of the base 6b, and brought into contact with the rail 5, whereby the base 6b
Can be fixed to the rail 5 at a desired position.
When the head of the subject P is fixed, a band having the same structure as the band 4B is engaged with the tip fitting 14 having the same shape as the rail 5. Next, the operation of the subject fixing device having the above configuration will be described.

First, before placing the subject P on the top plate 1,
The knob-shaped screws 13R and 13L are operated in advance to release the engagement state between the transparent acrylic plate 2 and the tip fixing metal fittings 12R and 12L, and the transparent acrylic plate 2 is brought into the state shown in FIG. 8, that is, the opened state. ..

As shown in FIG. 9, the subject P is fastened to the upper body (body) of the subject P with both arms and with the mat 15 with the body band 4A, and the fastener 1 for the mat 15 is attached and detached.
5a is engaged with the desorption fastener 15a '
The band 4 while fixing it in place on the top plate 1.
B and 4C are fixed at desired positions on the rail 5 according to the physique of the subject P, usually at positions corresponding to the knees and ankles, and both limbs are fixed on the top plate 1 with the bands 4B and 4C. ..

Then, the transparent acrylic plate 2 having the spacer cushions 3A, 3B selected according to the chest thickness of the subject P and the like facing the top plate is closed, and the knob screws 13R, 13L are made of transparent acrylic. Through hole 12HR, 1 in plate 2
2HL is screwed into the screw receiving holes 2HR and 2HL of the tip fixing metal fittings 12R and 12L to obtain the fixed state as shown in FIGS. As described above, according to the present invention, the subject can be fixed during the imaging period without causing pain to the subject with a simple operation.

The present invention is not limited to the above embodiment, but can be modified in various ways. For example, the number of body bands or bands used may be increased according to the motion state of the subject. Further, in the above embodiment, the transparent acrylic plate is supported on the top plate so as to be opened and closed (rotated) in the front-back direction as shown in FIG. You may support with respect to a top board so that it may open and close in a direction.

[0025]

As described above, according to the present invention, there is provided a subject fixing device which can fix the subject during the imaging period without causing pain to the subject and can easily set or release the fixed state. Can be provided.

[Brief description of drawings]

FIG. 1 is a side view showing a configuration of a subject fixing device and a fixed state of a subject according to an embodiment of the present invention.

FIG. 2 is a plan view showing a configuration of a subject fixing device according to an embodiment of the present invention and a fixed state of the subject.

FIG. 3 is a perspective view showing the shape of the transparent acrylic plate shown in FIG.

FIG. 4 is a perspective view showing a shape of a spacer cushion shown in FIG.

5 is a view of the subject fixing device shown in FIG. 1 viewed from a D1 direction.

FIG. 6 is a view of the subject fixing device shown in FIG. 1 viewed from a D2 direction.

FIG. 7 is a view showing a bonding relationship between respective parts constituting the subject fixing device.

FIG. 8 is a side view showing an open state of the transparent acrylic plate.

FIG. 9 is a diagram showing the relationship among the upper body of the subject, the mat, the body band, and the top plate.

FIG. 10 is a perspective view showing the structure of a band.

FIG. 11 is a view showing fixing of a band base to a rail.

FIG. 12 is a view showing a conventional method for fixing a subject and a device.

13 is a diagram showing a state of fixation by the conventional method and apparatus for fixing an object shown in FIG. 12, as viewed from the axial direction of the object.

FIG. 14 is a diagram showing a shoulder receiving device as an example of a conventional subject fixation assisting device.

FIG. 15 is a diagram showing an arm receiving device as an example of a conventional subject fixation assisting device.

[Explanation of symbols]

1 ... Top plate, 2 ... Transparent acrylic plate, 3A, 3B ... Spacer cushion, 4, 5a, 5b ... Band.

Claims (1)

[Claims] 1. A top plate on which a subject is placed, a band which is fixedly provided at a desired position within a predetermined range on the top plate, and seals a part of the subject, The other part of the subject is fixed on the top plate by being supported by the tip and side ends of the plate and provided to face the top plate, and by sandwiching the other part of the subject together with the top plate. An object immobilization device, comprising: