JPH0340278Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a circular seat with a hollow center (ring shape) used to prevent bedsores.

(Prior Art) Conventionally, this type of ring-shaped seat consists of a single thick circular ring with a hollow center, and air is injected into the internal space of the circular ring. For example, the hollow center of a patient who has been in bed for a long time and cannot freely change his or her body position is placed in the area that is being compressed by the weight of the patient. It was designed to prevent slippage.

(Problem that the invention aims to solve) However, in order to prevent the floor from shifting in areas other than the hollow center, it is necessary to turn over several times a day so that the same area does not get pressured all the time. With conventional circular seats, when a user rolls over to one side and then rolls over to the other side after a certain period of time, the area is only made up of a single thick circular ring. The weight is concentrated on the
Since the degree of denting becomes large, the repulsive force is weak and it is difficult to turn over.

In addition, for example, if there is an injury in a part of the body that is in contact with the dome, it would be desirable to change the fluid pressure only in the part that comes in contact with that part so that the pain is not felt as much as possible. Because it was a circular ring, it was not possible to reduce the amount of fluid injected into the internal space in that area, and as a result, the fluid pressure could not be changed, so the user had to use it while feeling pain, making it difficult to use. It was bad.

The present invention was devised in view of the above-mentioned problems of the prior art, and its purpose is to provide a ring-shaped circular seat formed in a spiral shape, to reduce the degree of denting, and to reduce the internal space. The aim is to improve usability by distributing pressure evenly throughout the device, and by changing the fluid pressure or increasing or decreasing the number of fluid injection points depending on the purpose.

Furthermore, the present invention aims to reliably prevent the entire cone from twisting during expansion due to the spiral shape, without providing a separate twist-preventing member, and also to achieve compact storage. .

(Means for Solving the Problems) The technical means achieved by the present invention to achieve the above object is to form an annular body having an internal space in a spiral shape toward the vicinity of the center, and to The side wall of the spiral annular body is cut in a cut shape to block the internal space of the spiral annular body at a desired location.

(Function) By the technical means described above, a plurality of annular bodies having cross-sectional shapes are provided toward the center of the concave seat, and the load is distributed to each annular body.

Furthermore, fluid pressure is evenly distributed within each of the blocked internal spaces.

In addition, when used by a person who has an injured part of the body that is in contact with the circular seat, reducing the amount of fluid injected only into the internal space of the annular body that is in contact with that part will lower the fluid pressure in that part. .

Furthermore, since the annular body expanded by fluid injection has a cut shape between each side wall, it moves toward the center of the conduit, thereby tightening the entire conduit.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

The circular seat 1 has a synthetic resin sheet 2 made of vinyl chloride, etc.
For example, two sheets of 2 are placed one on top of the other, and a blocking part 7 is pasted at a desired location between the 2 and 2, placed on a pedestal, and cut and bonded using a mold having a spiral cutting blade. , the adjacent side walls 3a, 3a, . . . are cut, and have separate internal spaces 4, and are formed in the shape of a flat ring with a hollow center portion 5.

Then, a desired fluid, for example, a gas such as air or a liquid such as water, is injected through the injection port 6 provided for each internal space 4, and the annular body 3 is expanded to have a desired elastic force. In this state, a plurality of annular bodies 3' having a cross-sectional shape are adjacent to each other in a cut shape (FIG. 2).

In this case, the size difference between contraction and expansion is corrected by moving toward the center 5 as shown by arrow x and tightening as the annular body expands. Therefore, there is no risk of adjacent annular bodies expanding outward and breaking down (twisting) (see FIG. 1).

In addition, two long rectangular flat sheets are stacked together, their edges and multiple locations in the longitudinal direction are welded, and an injection port is provided in each, and then the center is formed into a hollow shape by spiraling it toward the center. It may also be wound in such a way that the

(Effects of the invention) Since the present invention has the above-mentioned configuration, it has the following effects.

Cross-sectional shape Since multiple annular bodies are provided in a spiral shape toward the center of the concave seat, the load is distributed to each annular body, and the degree of denting of each weighted part is reduced, resulting in a reduction in repulsive force. For example, if you want to turn over again after a certain period of time, you can do so without having to shift your weight so much that even people who have difficulty changing their body position freely can easily do so. It is very convenient and useful because it allows you to turn over and prevent yourself from slipping on the floor, making it easier to use.

In addition, since the fluid pressure in the internal space is evenly distributed within each internal space of the annular body formed in a spiral shape toward the center of the concave, the deviation due to the fluid pressure is reduced, and floor slippage is prevented. Even when used for prevention or when sitting on the circular seat, it provides stability and provides a good feeling of use (sitting comfort).

In addition, even if there is an injury in a part of the body that is in contact with the circular seat, by reducing the amount of fluid injected only into the internal space of the annular body that is in contact with that part, it is possible to Since the fluid pressure decreases, it is possible to change the fluid pressure in that area without affecting the fluid pressure in other areas, which reduces the pain caused by the fluid pressure, improves usability, and meets user requests. This can be fully met.

In addition, it is possible to inflate only the area that corresponds to the area required for use, reducing the effort of caregivers and users when injecting fluid, and making it possible to inflate the size required for various users (body types, etc.) with one circular seat. I can handle it.

Furthermore, since the adjacent side walls are cut, even if the body shifts, for example when turning over, the annular body will expand outward in response to the movement of the body, so there is a risk that the seat will shift away from the body. This is useful because you can turn over with peace of mind.

In addition, by forming the circular seat in a spiral shape as described above, there is a problem that the entire circular seat is twisted due to the difference in the overall size between the contraction and expansion. Since the side walls of the body are cut in a shape, the annular body moves toward the center of the conical seat and tightens when inflated, so that the above-mentioned size deviation can be reliably corrected without causing any deviation in the entire conical seat.

Therefore, for example, without separately providing a member for forcibly suppressing the displacement, the circular seat can be maintained in its original shape without any difficulty, and the effectiveness of the spiral circular seat can be sufficiently improved.

In addition, since there are no separate parts as mentioned above, when stored, if the fluid injected inside is released, it becomes a flat string-like shape.
It is possible to fold it as is and store it, or to store it by rolling it up from the end (like a so-called scroll), which allows for compact storage (transportation) and is useful and of great practical value.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the circular seat of the present invention, Fig. 2 is a sectional view taken along the line - - in Fig. 1, Fig. 3 is an enlarged longitudinal sectional view of the vicinity of the cutoff part of the internal space, and Fig. 4 shows the side wall cut away. It is a vertical front view showing that there is. In addition, in the figure, 1... circular seat, 3... annular body, 3a...
...Side wall, 4...Inner space, 5...Center, 7...
Blocking part.

Claims (1)

[Scope of utility model registration request] In a circular seat formed in a ring shape, an annular body having an internal space is formed in a spiral shape toward the vicinity of the center, and the side walls of adjacent annular bodies are provided in a cut shape. A circular seat characterized by the interior space being blocked off at desired points.