JP2020058406A - Sitting position assisting chair for ct examination - Google Patents

Abstract

To provide a sitting position assisting chair for CT examination which can reduce load for maintaining a patient's position, which is a wight-bearing position of a sitting and forward bending position, during CT photographing.SOLUTION: In performing CT photographing, a legless chair 13 is mounted on a cradle 17 and, after a patient is seated on the legless chair 13, the patient is requested to hold a holding cushion 14 and to take a sitting and forward bending position. Then, the patient holding the holding cushion 14 in the sitting and forward bending position, is fixed to the legless chair 13 using belts 15, 16, and the CT photographing is performed. In this operation, the patient can reduce burden on a patient's body during CT photographing by holding the holding cushion 14 while taking the sitting and forward bending position, so that a patient's body pressure in a weight-bearing position is dispersed as well as a relaxation effect is obtained.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a sitting auxiliary chair for CT examination, which is used, for example, in CT (Computed Tomography) imaging in a seated anterior flexion in osteoporotic vertebral body fractures.

Vertebral body fracture is known as a kind of osteoporotic fracture. This is the most frequent osteoporotic fracture, and in recent years, the number is increasing, reflecting the aging society. Osteoporotic vertebral fractures may not be properly treated and may progress to collapse leading to pseudoarthrosis. If it becomes a non-union, there is a risk of persistent pain and delayed neuropathy, which complicates the patient. Therefore, early diagnosis and appropriate treatment are important.
Currently, MRI (Magnetic Resonance Imaging: Magnetic Resonance Imaging) is useful for diagnosing osteoporotic vertebral fractures, and it is said that CT is less sensitive, but domestic MRI is less common than CT, so imaging The number of days to wait is longer, the shooting time is longer, and the fee is higher. In addition, if there is a pacemaker or cerebral artery clipping, there is a limitation that MRI examination cannot be performed. Therefore, if the CT examination can diagnose osteoporotic vertebral body fractures in the acute phase, it is considered that more patients can be diagnosed and treated earlier.
Such vertebral body fractures usually worsen in a load position such as a standing position or a sitting position. Although the image evaluation of the load position is only a simple X-ray image, the image is unclear, and it is often difficult to visualize the state of vertebral body fracture or the degree of nerve compression. Therefore, if the sagittal image can be evaluated by CT, it can be one of the evaluation methods for this pathological condition. However, X-ray imaging by CT is generally performed in a supine position, and is not suitable for imaging in a sitting position.

  In recent years, in the diagnosis of this osteoporotic vertebral body fracture nonunion, a paper on CT imaging in a sitting position and anterior flexion position has been published (for example, Non-Patent Document 1). This is because many of the cases in which osteoporotic vertebral body bone fracture non-union is generated have a relatively small physique and are thin, and there are many patients who can easily take a forward flexion in a forward leaning posture. That is, in Non-Patent Document 1, the CT apparatus (computer tomography apparatus) performs imaging if the affected area is inside the gantry even if the entire body cannot pass through the annular gantry that is the imaging section in principle. It is possible to use it, and CT imaging in a sitting posture is also possible. Of course, a small patient can pass through the gantry in the sitting and forward bending posture.

Yo Itoi, 3 others, "Usefulness of sitting anterior flexion CT in osteoporotic vertebral body fracture nonunion", separate orthopedic surgery, Nankodo, April 2013, No. 63, P129-133.

  As described above, in the diagnosis of osteoporotic vertebral body fracture nonunion, it is possible to perform CT imaging in a sitting position in an anterior flexion position. This forced the patient to bend forward, and maintaining this posture was a heavy burden on the patient.

  Therefore, as a result of earnest research, the inventor paid attention to a holding cushion that disperses body pressure by a user's hugging and also obtains a relaxing effect during CT imaging in a sitting and bending position. That is, in CT imaging, if the patient holding the patient is fixed to the chair using a restraining member such as a belt, the burden on the patient due to the above-described sitting and bending posture is reduced. Therefore, they have completed this invention.

  The present invention has been made in view of the above problems, and provides a sitting assisting chair for CT examination capable of reducing the burden of maintaining the posture of the patient during CT imaging in the sitting forward bending position, which is the load position. Is intended.

  The present invention according to claim 1 is a seat chair made of an X-ray transparent material, which can be inserted through an inner space of an annular gantry of a CT device, a holding cushion made of an X-ray transmitting material, and the holding cushion. A seating assistance chair for CT examination, characterized in that it comprises a restraining member made of an X-ray transmissive material for fixing a patient who holds the patient in a sitting position and bends forward to the sitting chair.

The CT device mainly includes an annular gantry (stand) in which a tube for irradiating X-rays and a detector for receiving transmitted X-rays are housed so as to be rotatable, and a cradle (bed) on which a patient lies. It is composed of three devices including a console (control unit) for controlling these. For example, VCT Light Speed (GE Healthcare, Tokyo) or the like can be adopted as the CT device.
The "CT examination" referred to here is an examination in a seated anterior flexion position using a CT device, which is adopted, for example, at the time of diagnosis of osteoporotic vertebral body fracture, osteoporotic vertebral body fracture non-joint and the like.
In addition, this sitting chair for CT examination can be applied to MRI imaging.

The "X-ray transmission material" here is not limited as long as it does not affect the CT imaging process. For example, various synthetic resins (vinyl chloride, polypropylene, polyester, polycarbonate, acrylic, etc.) and various low-density trees (cypress, pine, etc.) may be used. The same applies to the X-ray transmission materials in claims 3 and 4.
The shape of the seat is arbitrary. Further, it may be a foldable type or an integral type (fixed type) that is not.
The size of the seat chair is arbitrary as long as it can be inserted into the inner space of the gantry.

The size and shape of the holding body cushion are arbitrary.
Further, the structure of the holding cushion is also optional. For example, a bag body made of natural leather, synthetic leather, artificial leather, cloth, synthetic resin sheet or the like and filled with an elastic filler such as natural cotton, synthetic cotton or sponge can be used.
The holding cushion may be fixed or removable with respect to the seat.
The type and size of the binding member are not limited as long as it is a member that can fix a patient who holds the holding cushion and holds the patient in the forward bending position to the sitting chair. For example, a belt, a rope, a cloth sheet or the like may be used.
The number of binding members may be one or more

  The present invention according to claim 2 is the sitting assistance chair for CT examination according to claim 1, wherein the holding body cushion is a cylindrical body having a diameter of 20 to 40 cm and a height of 20 to 40 cm. .

If the diameter of the embracing cushion is less than 20 cm, the cushion is too thin, and the posture stability and relaxing effect of the patient's sitting and anterior flexion are reduced during CT imaging. If it exceeds 40 cm, the cushion is too thick and the patient is hard to hold it.
If the height of the embracing cushion is less than 20 cm, the cushion is too low (too short), and the effect of reducing the burden of maintaining the posture of the patient during CT imaging is reduced. If it exceeds 40 cm, the cushion is too high to allow the patient's head to pass through the CT annular gantry. In particular, the preferred size of the embracing cushion is 32 cm in diameter and 30 cm in height. A height adjusting member such as a towel or a cushion may be used to adjust the height of the holding body cushion.

  The present invention according to claim 3, wherein one of the surface fasteners made of an X-ray transparent material is fixed to a bottom surface of the holding body cushion, and at least a front portion of the upper surface of the sitting portion of the seat chair. The seating auxiliary chair for CT examination according to claim 1 or 2, wherein the other of the hook-and-loop fasteners is fixed to the entire area.

Either one or the other of the hook-and-loop fasteners may be male or female. Alternatively, both may be used as both male and female. It should be noted that the female surface fastener is not limited to a dedicated one, and is not limited as long as it is made of a material such as a non-woven fabric that can be hooked by the male surface fastener. The same applies to the other fasteners of claim 4.
Further, the one surface fastener may be fixed to the whole or a part of the bottom surface of the holding body cushion. Further, the number of the one surface fastener used may be one or more.
Furthermore, the other surface fastener may be fixed to the entire upper surface of the seat portion of the seat, or the entire upper surface of the seat portion.

  According to a fourth aspect of the present invention, the backrest portion of the chair is made of a transparent material made of an X-ray transparent material, the binding member is a belt, and both ends of the belt are made of an X-ray transparent material. 4. One of the other surface fasteners is respectively fixed, and the other of the other surface fasteners is fixed to the entire back surface of the upper portion of the backrest portion of the seat chair. Of these, the sitting auxiliary chair for CT examination according to any one of items.

As the transparent material, for example, various transparent synthetic resins or the like can be adopted.
The size of the belt (width, length, etc.) is arbitrary as long as it can fix a patient who holds a holding cushion and takes a posture of bending forward in a sitting position to a chair. Further, the belt may be formed integrally with the holding body cushion or may be provided separately.
The number of belts used may be one or plural.

According to the present invention as set forth in claim 1, when performing CT imaging in a sitting position and a forward bending position which is a load position, first, a seat chair is placed on a cradle (patient), and a patient sits on the seat chair. After sitting, hold the holding cushion and hold the patient in the sitting and forward bending position. Then, in this state, the patient is fixed to the chair. After that, CT imaging is performed while maintaining this state.
At this time, a patient who sits on a chair and takes a sitting forward bending posture clings to a holding cushion to disperse the body pressure of the patient who is in the loading position and obtain a relaxing effect. As a result, it is possible to reduce the burden on the body during CT imaging in the sitting and bending position.

  Particularly, according to the present invention as set forth in claim 2, a columnar body having a diameter of 20 to 40 cm and a height of 20 to 40 cm is adopted as the holding body cushion. With this size, the patient can easily take the posture of sitting and bending forward, and the CT imaging of the thoracolumbar spine and the like in this posture is unlikely to occur.

  Further, according to the present invention as set forth in claim 3, a large-sized sheet holding the holding body cushion is fixed to at least the entire front portion of one of the surface fasteners fixed to the bottom surface of the cushion and the upper surface of the sitting portion of the seat chair. It is hooked with the other side of the hook and loop fastener. Therefore, the holding body cushion can be hooked at an arbitrary position on the upper surface of the front portion of the seating portion in accordance with the patient's physique, photographing conditions, and the like.

  Further, according to the present invention as set forth in claim 4, one of the other surface fasteners is fixed to both ends of the belt, and the other of the other surface fasteners is provided on the entire back surface of the upper portion of the backrest of the seat chair. It is stuck. Therefore, by using this other belt, it is possible to easily fix and release the fixation of the patient holding the holding cushion to the chair in the forward bending posture.

FIG. 4 is a perspective view showing a state immediately before CT imaging of the sitting chair for CT examination according to the first embodiment of the present invention. It is a perspective view of the sitting assistance chair for CT examination concerning Example 1 of the present invention. It is a top view of the belt with a cushion pad used for the sitting chair for CT examination concerning Example 1 of the present invention. FIG. 3 is a perspective view showing a state during CT imaging of the sitting chair for CT examination according to the first embodiment of the present invention.

  Hereinafter, examples of the present invention will be specifically described. Here, a seating assistance chair for CT examination used for diagnosis of osteoporotic vertebral body fracture is taken as an example.

  In FIG. 1, 10 is a sitting auxiliary chair for CT examination according to the first embodiment of the present invention. The sitting auxiliary chair 10 for CT examination is inserted through an inner space (inner diameter 70 cm) of an annular gantry 12 of a CT device 11. A free sitting chair 13, a holding cushion 14 held by the patient at the time of CT imaging, and two belts 15 and 16 for holding the patient in a sitting and forward bending posture to hold the patient in the sitting chair 13 It is equipped with.

Hereinafter, these components will be specifically described.
The CT device 11 is mainly composed of a tube for irradiating X-rays, and a circular gantry (stand) 12 in which a detector for receiving transmitted X-rays is rotatably housed, and a bed on which a patient lies. It is provided with a certain cradle 17 and a console (not shown) which is a control unit for these.

As shown in FIGS. 1 and 2, the seat chair 13 has a cushion seat made of a foamed synthetic resin over the entire surface of a rectangular thick seat plate 18 which is long in the front-rear direction, excluding the rear end portion. A seating portion 20 to which 19 is adhered, a backrest portion 22 which is vertically erected on the upper surface of the rear end portion of the seat plate 18 and has a rectangular thick backrest plate 21 which is long in the vertical direction as a substrate, and a seating portion The base end is fixed to the surface of the rear end of the portion 20, and the longitudinal half of the lower half of the backrest plate 21 that supports both ends in the width direction and the middle portion in the length direction from behind with screws. It has three substantially rectangular ribs 23. These components are glued together after assembly.
The seating portion 20, the backrest portion 22, the ribs 23, and the screws B are made of transparent vinyl chloride resin which is an X-ray transparent material.

The size of the seating portion 20 is 40 cm, which is substantially the same width as the width of the cradle 17, and 65 cm in length. The size of the cushion sheet 19 is 40 cm in width and 50 cm in length. Further, the size of the backrest portion 22 is 40 cm in width and 45 cm in height. Therefore, the seat 13 is configured to be freely insertable into the inner space of the gantry 12 having an inner diameter of 70 cm.
A large first female surface fastener (the other of the surface fasteners) 24 having a rectangular shape in plan view is adhered to the entire surface of the cushion sheet 19. Further, a large second female surface fastener (the other one of the other surface fasteners) 25 having a rectangular shape when viewed from the rear is adhered to the entire back surface of the upper half of the backrest plate 21. Therefore, the lower half of the backrest 22 including the ribs 23 is ensured to be transparent. As a result, at the time of CT imaging, the position of the imaging target region of the patient who takes the sitting forward bending position is confirmed not only from the front direction and the left-right direction but also from the back of the seat chair 13, and based on the result, the patient is checked. It is possible to correct the sitting forward flexion posture to the optimum posture.

The holding cushion 14 is a columnar bag in which a synthetic bag (not shown) made of polyester fiber (X-ray transparent material) is filled in a cylindrical bag 14a made of synthetic leather (X-ray transparent material).
The size of the holding cushion 14 is 32 cm in diameter and 30 cm in height. Two first male surface fasteners 26 are sewn on the lower surface of the holding cushion 14.
Two short first male type surface fasteners (one of the surface fasteners) 26 made of an X-ray transparent material are fixed to the bottom surface of the holding cushion 14.
Each of the belts 15 and 16 is made of polypropylene (X-ray transparent material) having a width of 5 cm and a length of about 160 cm. Second male surface fasteners (one of the other surface fasteners) 27 are sewn on the back surfaces of both ends of the first belt 15 and the front surfaces of both ends of the second belt 16, respectively.

  The first belt 15 fastens the patient holding the holding cushion 14 in the front-rear direction. As shown in FIG. 2, the intermediate portion of the first belt 15 in the length direction is sewn to the intermediate portion in the height direction of the body portion of the holding cushion 14. By integrating the holding cushion 14 and the belt 15 in this manner, the patient holding the holding cushion 14 can be easily fastened in the front-back direction by the first belt 15. The belt 15 may be separate from the holding body cushion 14.

The second belt 16 fastens the patient holding the holding cushion 14 from above and below. As shown in FIG. 3, the second belt 16 is sewn with a cushion pad 28 wider than the belt 16 at an intermediate portion in the length direction.
The cushion pad 28 is a thin and horizontally long rectangular bag 28a made of vinyl leather and containing a sponge sheet. The cushion pad 28 may be omitted.

Next, with reference to FIGS. 1 to 4, a CT examination will be described which uses the CT examination sitting assistance chair 10 according to the first embodiment of the present invention to perform a final diagnosis of an osteoporotic vertebral fracture.
As shown in FIG. 1, first, the seat 13 is placed on the cradle 17 of the CT device 11 with the backrest 22 side facing the gantry 12, and the patient is seated on the seat 20 of the seat 13. Let Thereafter, in a posture in which the patient holds the lower portion of the holding cushion 14 with both feet, a cylindrical holding cushion is placed on the front half of the seating portion 20 via the first male and female surface fasteners 24 and 26. Hook 14

Next, the patient is made to hold the manipulative cushion 14 so that the patient takes a posture of sitting and bending forward. Here, the height is adjusted by the towel T according to the physique of the patient. Of course, it may be omitted. Then, using the two belts 15 and 16, the patient holding the holding cushion 14 is fixed to the seat chair 13 in the sitting and forward bending posture.
That is, using the first belt 15, the patient holding the holding cushion 14 is fastened in the front-back direction (horizontal direction). Next, using the second belt 16, the patient holding the cushion 14 is fastened from the vertical direction (vertical direction).

At this time, the second male surface fastener 27 of the first belt 15 is hooked on the second female surface fastener 25 on the back surface of the backrest portion 22. Further, the second male surface fastener 27 of the second belt 16 is hooked on the first female surface fastener 24 of the seating portion 20. When the patient holding the holding cushion 14 is fastened by the second belt 16 from above and below, the wide cushion pad 28 relaxes the tightening force on both shoulders and back of the patient (FIGS. 1 and 1). 3).
Here, before the actual CT imaging, it is confirmed that the patient has no obvious exacerbation of pain or neurological symptoms in a short sitting and reclining position. After confirming that there is no such exacerbation, while gradually moving the cradle 17, by rotating the tube and detector in the internal space of the gantry 12, CT imaging of the patient's thoracolumbar spine, etc. in the sitting and forward bending position. (FIGS. 1 and 4).

As described above, at the time of CT imaging, a patient who sits on the chair 13 and assumes a sitting forward bending posture holds the holding cushion 14 and thereby the body pressure of the patient in the weighted position is dispersed, which also has a relaxing effect. can get. As a result, it is possible to reduce the burden on the body during CT imaging in the sitting and bending position.
Further, since the holding body cushion 14 is a columnar body having a diameter of 32 cm and a height of 30 cm, the patient can easily take the posture of sitting and bending forward, and CT imaging of the thoracolumbar spine and the like in this posture is not hindered.
Further, the first male surface fastener 26 is sewn to the bottom surface of the holding cushion 14, and the first female surface fastener 24 is adhered to the entire front portion of the upper surface of the sitting portion 20 of the sitting chair 13. The holding body cushion 14 can be hooked at an arbitrary position on the upper surface of the front portion of the seating portion 20 according to the patient's physique, photographing conditions, and the like.

  Furthermore, here, the second male surface fasteners 27 are sewn to both ends of the belts 15 and 16, respectively, and the first female surface fasteners 24 are bonded to the entire surface of the cushion sheet 19. A second female die fastener 25 is adhered to the entire back surface of the upper portion of the backrest portion 22. Therefore, using two belts 15 and 16 that are arranged in a cross in the vertical and horizontal directions, and holding the cushion 14 in the sitting forward bending position, each of which has a different physical constitution, is fixed to a firm seat 13 of a patient. , And its fixation can be released easily. Even if the patient is firmly fixed to the seat 13 in the sitting forward bending position by using the two belts 15 and 16 crossed in this way, the patient holds the holding cushion 14 , The physical burden is small.

  INDUSTRIAL APPLICABILITY The present invention is useful as an assistive technique for CT imaging in a sitting and bending position.

10 Seating assistance chair for CT examination 11 CT device 12 Gantry 13 Seat chair 14 Holding cushions 15, 16 Belt 24 First female surface fastener (other surface fastener)
25 Second female hook and loop fastener (other of another hook and loop fastener)
26 1st male type surface fastener (one side of surface fastener)
27 Second male surface fastener (one of the other surface fasteners)

Claims (4)

A seat chair made of an X-ray transparent material that can be inserted through the inner space of the annular gantry of the CT device.
A holding cushion made of X-ray transparent material,
A sitting assisting chair for CT examination, comprising: a binding member made of an X-ray transparent material for fixing the patient, who holds the holding cushion and takes a forward bending posture, to the sitting chair.   The sitting assistance chair for CT examination according to claim 1, wherein the holding body cushion is a columnar body having a diameter of 20 to 40 cm and a height of 20 to 40 cm. One of the surface fasteners made of an X-ray transparent material is fixed to the bottom surface of the holding cushion.
The seating assistance for CT examination according to claim 1 or 2, wherein the other surface fastener is fixed to at least the entire front portion of the upper surface of the sitting portion of the chair. Chair. The backrest of the chair is made of a transparent material made of an X-ray transparent material.
The binding member is a belt,
One of another hook-and-loop fasteners made of an X-ray transparent material is fixed to both ends of the belt,
The CT examination according to any one of claims 1 to 3, wherein the other surface fastener is fixed to the entire back surface of the upper portion of the backrest of the seat chair. Sit-assisting chair.

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