JPH03109045A - Apparatus for fixing subject - Google Patents

Abstract

PURPOSE:To suppress artifacts due to body motions of subject to a minimum by installing a subject fixture, which is set along a longitudinal direction of top plate and can fix the whole body of subject put on the top plate. CONSTITUTION:A subject 10 is put on a top plate 6 and the whole body of subject 10 is covered with a subject fixture 7. Both end parts of this subject fixture 7 can be overlapped each other near the center of the top plate 6 and over the subject 10. This subject fixture 7 is a little stretchable corresponding to the size of subject 10 and has a structure that the subject fixture 7 itself is not deformed even if the subject 10 moves a little in it. As the subject 10 can be made to stop moving and fixed on the top plate 6 in the aforementioned manner, it is possible to suppress artifacts due to body motions of the subject 10 to a minimum while collecting images of the subject 10 and to carry out a collection of diagnostic images of good quality.

Description

DETAILED DESCRIPTION OF THE INVENTION [Objective of the Invention (Industrial Application Field) The present invention relates to a subject fixing device, and more specifically to an MRI
The present invention relates to a subject fixing device for fixing a subject in a fixed position on a medical bed device used in a medical diagnostic device such as a (magnetic resonance imaging) device, a CT device, or a nuclear medicine diagnostic device.

(Prior Art) One of the conventional subject fixing devices is the one shown in Japanese Patent Application No. 1988-98842, which was previously proposed by the present applicant, and a perspective view of this subject fixing device is shown in FIG. Shown below.

This subject fixing device includes a rectangular top plate part 6 on which a subject is placed in a supine state, and a top plate part 6 that is movable in the Xl and X2 directions shown in FIG. It is composed of a subject fixing device 20 attached thereto, and a headrest 9 attached to one end of the top plate section 6.

The subject fixing device 20 is arranged in the longitudinal direction (X, . . .
A guide plate 21.22 is attached to the top plate part 6 along both sides in the X2 direction) and has gaps 21a and 22a in the X11X2 direction between it and the top plate part 6; The belt 23, which is disposed in a direction perpendicular to the longitudinal direction of the top plate part 6 and passing through the gaps 21a and 22a formed by the belt 22, and both ends of this belt 23 are placed in a front-back relationship, respectively. Adhesive parts (magic fasteners) 24a and 24b are provided.

If this test subject fixing tool 20 is used, the belt 23 is wound around any part of the test subject placed on the top plate 6, and both ends of the belt 23 are joined using the adhesive parts 24a and 24b. Although it is possible to fix the subject by tying it to the top plate 6, it is not possible to fix the subject over the entire longitudinal direction of the top plate, and there is a possibility that the subject may protrude from the short side of the top plate. In this case, it is reported that since the subject cannot be completely fixed, body movement artifacts occur, making it difficult to collect high-quality diagnostic images.

(Problems to be Solved by the Invention) The present invention has been made to solve the above-mentioned problems, and it is possible to minimize artifacts caused by body movements of a subject and collect high-quality diagnostic images. The object of the present invention is to provide a subject fixing device that can contribute to

[Structure of the Invention (Means for Solving the Problems)] In order to achieve the above-mentioned object, the present invention provides a subject fixing device that is attached to the top plate of a medical bed apparatus, in which the object is fixed along the longitudinal direction of the top plate. The object fixing device is attached so that the entire object placed on the top plate can be fixed.

(Function) A test object fixing device is provided on the top plate for placing the test object, which is movable in the longitudinal direction of the top plate while being restrained by the top plate, and can fix the entire test subject. Therefore, since the entire subject can be fixed with the subject fixing device, it is possible to suppress the body movement of the subject.

(Example) Examples of the present invention will be described in detail below.

FIG. 1 shows the external appearance of a Mu device 2 incorporating a subject fixing device 1, which is an embodiment of the present invention.

This MRI apparatus 2 includes a bed device 3 incorporating a subject fixing device 1 so as to be movable in the Xl and X2 directions as shown in FIG. The MRI apparatus main body 5 is equipped with an MRI apparatus main body 5 which, when inserted into the hole 4, collects images of the affected area of the subject based on magnetic resonance phenomena.

The subject fixing device 1 is configured to hold a subject M as shown in FIG.
A rectangular top plate part 6 on which the subject is placed in a supine state, and a subject fixing device 7 attached to the top plate part 6 so as to be movable in the Xl and X2 directions shown in FIG. , and a headrest 9 attached to one end of the top plate section 6.

The subject fixing device 7 has one end attached to the top plate part 6 along both sides of the top plate part 6 in the longitudinal direction (XI and X2 directions), for example, as shown in FIG. 2(a), It is constituted by a pair of bellows 7a and 7b made of plastic such as polypropylene, the other end of which is open. Then, the tip of one bellows (for example, 7b) is attached as shown in Figure 2 (
As shown in b), the tightening belt 8b is used for tightening, and the other end of the bellows 7a is provided with a clasp 8a that has the function of fixing the bent part of the tightening belt 8b and further fixing the bent belt. It is provided.

When the subject 10 is placed on the top plate 6, the subject fixture 7 covers the entire subject 10, as shown in FIG. Both ends of the subject fixing device 7 can be overlapped near the center and above the subject 1o, and by adjusting the overlapping state of the overlapping portion 11, the subject 1o can be overlapped.
The structure is such that it can be tightened reliably according to the person's physique.

Further, this subject fixing device 7 can be expanded and contracted to some extent according to the size of the subject 1o, and furthermore, this subject fixing device 7
Even if the subject 10 moves slightly inside the body, the subject fixture 7 itself is structured not to deform.

According to this test subject fixture 7, the test subject 10 is placed on the top plate portion 6.
is placed, the whole of the subject 10 is covered with a bellows-shaped subject fixing device 7, and the overlapping portion 1 of this subject fixing device 7 is
1 to stop the movement of the subject 10,
Since it is possible to fix the subject 1 on the top plate 6,
When the MRI apparatus 2 collects images of the subject 10, it is possible to minimize artifacts caused by the body movements of the subject 10, resulting in high-quality diagnosis. Images can be collected.

Furthermore, since an unconscious patient cannot move even if he or she tries to make large movements, it becomes possible to easily photograph the affected area.

4 and 5 are side sectional views showing other embodiments of the present invention.

The difference from the embodiment shown in FIGS. 2 and 3 is that instead of the bellows specimen fixing device 7 made of plastic such as polypropylene, it is made of a rigid plate made of plastic such as polycarbonate. Test object fixing device 12
a and 12b or 14 are used.

The subject fixing devices 12a and 12b shown in FIG. 4 are a pair of plastic parts that are attached to the top plate 6 at one end and open at the other end along both longitudinal sides of the top plate 6. It is composed of rigid plates 12a and 12b.

A tightening belt 13b is fixed to the tip of one rigid plate (for example, 12b), and a bent part of the tightening belt 13b is fixed to the end of the other plate, and the bent belt is fixed to the end of the other plate. A clasp 13a is provided that has the function of fixing.

When the subject 10 is placed on the top plate 6, the subject fixture 12
a and 12b cover the entirety of the subject 10, and the pair of subject fixtures 12a and 12b are arranged so that their ends can be overlapped near the center of the top plate 6 and above the subject 10. By adjusting the overlapping state of the overlapping parts in the same manner as in the embodiment shown in FIG.
The structure is such that it can be tightened reliably to suit the physique of the child.

By tightening the overlapping portions of the subject fixing tools 12a and 12b to fix the subject, the same effects as in the embodiment described above can be obtained.

The test subject fixing device 14 shown in FIG. It has a structure that covers the entirety of 10.

Tightening belts 15a and 15b are attached to both ends of the plastic cover, and tightening belts 15a are attached to the rigid plastic plate protruding from both longitudinal sides of the top plate 6. Clasps 16a and 16b are provided which have the function of fixing the bent portions of the belts and 15b, and further fixing the folded belt.

When the subject 10 is placed on the top plate 6, the subject fixture 14
is attached to the top plate part 6 in a state that covers the entire subject 10, and the upper edge of the plastic plate provided at both ends of this subject fixing device 14 and both longitudinal sides of the top plate. They have a structure that allows them to be overlapped, and by adjusting the overlapping state of the overlapping parts as in the embodiment shown in FIG.

Next, FIG. 6 is a perspective view showing still another embodiment of the present invention.

The difference from the embodiment shown in FIG. 4 is that open holes are provided at two locations on the surface of the subject fixture made of a rigid plate made of plastic such as polycarbonate.

The subject fixing device 17 having the above-mentioned open hole shown in FIG. It is composed of rigid plates 17a and 17b made of plastic, and the pair of rigid plates 17a and 17b are
Both end portions can be overlapped near the center of the top plate portion 6 and above the subject 1o, and in this overlapped portion, three belt-type fixtures 18 similar to the embodiment shown in FIG. 4 are installed. It is set up in several places.

According to this embodiment, the same effects as those of the previous embodiments can be obtained, and the provision of open holes at two locations on the surface of the test subject fixing device improves air circulation, so that during the test of the test subject. environment will be improved, and diagnosticians and laboratory technicians will
If necessary, it is also possible to easily confirm the collection site of the diagnostic image of the subject.

[Effects of the Invention] As described above, according to the present invention, the entire subject can be fixed in both the longitudinal and transverse directions of the top plate of the medical bed apparatus, thereby effectively controlling the movement of the subject's body. It is possible to provide a subject fixing device that can minimize body movement artifacts that occur when collecting images by a medical diagnostic device.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the external appearance of an MRI apparatus incorporating the device of the present invention, FIGS. 2(a) and 2(b) are a side sectional view and partially enlarged view showing an embodiment of the present invention, and The figure is a side sectional view showing a state in which a subject is fixed by the apparatus according to the embodiment of the present invention.
FIG. 4 is a side sectional view showing another embodiment of the present invention, FIG. 5 is a side sectional view showing a state in which a subject is fixed in the above embodiment, and FIG. FIG. 7 is a perspective view of a conventional device. 1... Subject fixing device, 3... Bed, 5... MRI apparatus main body, 7.12a, 12b. 2... MRr device, 4... Insertion hole, 6... Top plate portion, 14.17... Subject fixing device, 10... Subject. 9...Headrest,

Claims (5)

[Claims] (1) A subject fixing device attached to the top plate of a medical bed apparatus includes a subject fixing device that is attached along the longitudinal direction of the top plate and can fix the entire subject placed on the top plate. A subject fixing device comprising: (2) The subject fixing device according to claim 1, wherein the subject fixing device comprises a pair of plastic bellows that can be opened and closed at a central portion. (3) The subject fixing device according to claim 1, wherein the subject fixing device comprises a pair of rigid plastic plates that can be opened and closed at a central portion. (4) The subject fixing device according to claim 1, wherein the subject fixing device comprises one rigid plate made of plastic. (5) The subject fixing device according to claim 1, wherein the subject fixing device has an open hole provided in the surface of a rigid plate made of plastic.