JPH0137968Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a baby carriage equipped with a seat for infants, and in particular, to provide infants with an environment that guarantees their natural biological structure and does not hinder their free development. Regarding the improvement of

[Conventional technology]

Our country, along with the Indians of North America and Canada, the Latvian people of Northern Europe, Italy, and West Germany,
Congenital hip dislocation (hereinafter abbreviated as "congenital hip dislocation")
The disease is one of the most common congenital diseases in infants and children, and the disease consistently ranks first among all congenital diseases in infants and young children. The frequency of occurrence is estimated to be approximately 1 in 20, including complete dislocation as well as milder cases such as subluxation and acetabular dysplasia.

All of the countries mentioned above that are prone to congenital hip prolapse have the custom of wrapping infants with their legs stretched out, and even in our country, there was a time when infants were wrapped in rolled diapers or triangular diapers to tighten their legs and keep their hips stretched out. .

Based on these findings, it has been found that the majority of congenital hip prolapses occur when infants are restrained with their legs stretched out, preventing their legs from freely moving in the very early stages of neonatal life. Immediately after birth, infants can wear crotch diapers and loose-fitting clothing that do not interfere with the movement of their legs and allow them to freely spread their legs in a natural way, i.e., bend their hips like a frog. As a result, the incidence of congenital hip prolapse has decreased dramatically.

The factors that prevented the natural healing of congenital hip prolapse and worsened the disease were not limited to diapers and clothing. The backpack straps used to carry infants on their backs have gradually become obsolete due to changes in lifestyle, and side straps have come to be used more frequently. In the case of a side-carrying band,
They are forced to stretch their legs with their buttocks in the center, and remain in that unnatural position for long periods of time, with their entire body tied up and elongated.

In addition, baby carriages began to become popular after the war, but most of the ones currently in use do not carry infants lying down, but instead have a chair-shaped hammock attached to them. . What's more, these baby carriages have become smaller, and the seat of the hammock has changed into a bag-like shape, just as the shoulder strap has changed into a side-carrying band.

[The problem that the idea aims to solve]

It is thought that changes in the childcare environment may have placed abnormal pressure on infants' hip joints, leading to hip dislocation.

The dislocation of the hip joint was discovered during a regular health checkup at a public health center, and the patient is receiving guidance. In this case, the infant is handled so that the legs are bent and can spread freely.

If an infant has a dislocated hip, he or she will have difficulty walking. However, even if the symptoms of dislocation are minor, or if the dislocation hardens due to insufficient treatment, it is relatively often left as it is because there is no direct impact on life. If the child continues to grow as it is, the hip joint will become painful and stiff, and the movement of the legs will gradually become worse, leading to the development of osteoarthritis of the hip, which is fundamentally incurable.

Based on the above-mentioned concept, it is desired to develop childcare equipment that matches the posture of infants and their most natural living bodies, and that does not interfere with their free movement functions.

Therefore, the object of this invention is to provide a baby carriage, especially a baby carriage, which can satisfy the above-mentioned demands.

[Means to solve the problem]

This invention is a baby carriage equipped with a seat for an infant having a seat portion and a backrest portion, and has the following configuration in order to solve the above-mentioned technical problem.

That is, the seat has a trapezoidal shape in which the length of the front edge is longer than the length of the rear edge.

Further, the baby carriage is provided with a pair of handrail-like members having an interval to sandwich both sides of the infant in order to position the buttocks of the infant sitting on the seat in the lateral direction. These pair of handrail-like members are positioned above the seat so as to form a gap between them and the seat to prevent the infant's legs from coming into contact with each other.

Furthermore, the components of the stroller that support the pair of handrail-like members that may come into contact with the infant's legs should have an inner dimension of the width in the lateral direction.
It is said to be over 36cm.

[Effect]

According to the baby carriage having such a configuration, the lateral position of the infant's buttocks is performed by holding both side portions of the infant between the pair of handrail-like members. Further, at least a portion of the infant's legs are placed on a trapezoidal seat in which the length of the front edge is longer than the length of the rear edge, and at this time, a gap is formed between the leg and the seat. The infant's legs are prevented from coming into contact with the pair of handrail-like members arranged at Also for those that may be
By setting the height to 36 cm or more, it is possible to prevent the legs of infants from coming into contact with each other. Therefore, factors that press the infant's legs from the outside to the inside are removed.

〔Example〕

Hereinafter, embodiments of this invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing the appearance of a baby carriage that is an embodiment of this invention.

The baby carriage shown in FIG. 1 is provided with a seat 1,
This seat 1 is provided with a seat part 2 and a backrest part 3. The backrest portion 3 is configured to be reclinable, and the seat 1 can be shaped like a chair or a bed. 1 in relation to seat 1
A pair of handrail-like members 6 are provided. Wheels 4 are provided below the baby carriage.

Next, we will discuss the clinical data that directly led to the proposal of this device.

FIG. 2 is an illustrative diagram showing the basic natural body shape of an infant. FIG. 3 is a graph showing the distribution of crotch distances in a newborn baby's natural body shape. As shown in Figure 2, the legs of an infant in a natural body shape are
The hip joints are bent and spread out like a frog's. The conditions for providing such a natural living body, that is, an environment that actively guarantees the healthiest and most comfortable posture and does not hinder free growth, are as follows: the width of the kneecaps when the crotches are spread, or the distance between the crotches W. is maintained at a predetermined value and the natural state is maintained.

The data shown in Figure 3 is hardly found not only in Japan but also in other countries, so the inventor of this application requested national hospitals, public health centers, etc. to record the results of surveys over the past two years and completed the data. It is. As mentioned above, it is especially important to actively maintain the natural living body up to six months after birth, and this period is the most important. The data shown in FIG. 3 was measured specifically on newborn infants between 3 and 6 months old. The bar graph in FIG. 3 represents the distribution ratio for each crotch distance W, and shows, for example, that 20% of the people have a crotch distance W of 31 cm. Furthermore, the line segment written below the number indicating the crotch distance W indicates the distribution state of the crotch distance W according to the number of months (age) after birth. In other words, the groin distance W is 28-30cm at 3 months, 28-33cm at 4 months, 29-33cm at 5 months, and 31-36 at 6 months.
It can be seen that they are distributed within a cm range.
Furthermore, it has been found that no major changes in groin distance W are observed between 6 months and 10 months, when children are able to walk on their own.

From the above clinical data, it can be seen that it is sufficient for the seat to have a configuration that allows the maximum width of the crotch distance W to be 36 cm. However, the average value of the distance W between the legs at 6 months of age is 33 cm. It should be noted that the dimensions of the seat, especially the seat part, do not need to be as wide as 36 cm as mentioned above, and even if the crotch distance W is 36 cm, there must be no obstructions in the area where the infant's legs may come into contact. If there is no such thing, it is sufficient, and I would like to point out that the width of the seat part is not an absolute measurement of 36 cm.

FIG. 4 is a plan view showing the dimensions of the space provided above the seat in this sense. That is, it can be seen that the space 8 only needs to have a planar shape of at least a trapezoid. The width Wf of the front end of the space 8 is maintained at a predetermined value to prevent hip dislocation and is related to the groin distance W of a sitting infant.
The size may be such that there is no obstacle that presses the infant's legs inwardly from both sides. Width of rear end of space 8
Wr may be any dimension that is specified so as to position the buttocks of an infant placed on the seat in the lateral direction. Based on the aforementioned clinical data, it can be said that the width Wf of the front end of the space 8 should be 36 cm or more.

The baby carriage seat 1 shown in FIG. 1 directly affects the posture of an infant. Therefore, dimensions are given to such a seat 1 to allow a space 8 as shown in FIG. More specifically, the seat portion 2 is formed into a trapezoidal shape in which the length of the front edge is longer than the length of the rear edge. In order to horizontally position the buttocks of an infant sitting on the seat 2, the pair of handrail-like members 6 are spaced apart so as to sandwich both sides of the infant. It is positioned above the seat 2 so as to form a gap therebetween to avoid contact. Further, in FIG. 1, front legs and rear legs of the baby carriage are shown as components of the baby carriage that support a pair of handrail-like members 6, but the baby carriage that supports such handrail-like members 6 is Components that may come into contact with an infant's legs are required to have an inner width of 36 cm or more in the lateral direction. Therefore, the space 8 shown in FIG. 4 is defined by the seat 2, the pair of handrail members 6, and the components of the baby carriage that support these handrail members 6. . That is, the inner side in the width direction formed between the length of the front edge of the seat portion 2 and the component of the stroller that supports the pair of handrail-like members 6 and which the infant's legs may come into contact with. The dimensions are such that a predetermined length is achieved to prevent dislocation of the hip joint, and the distance between the respective rear ends of the pair of handrail-like members 6 is defined so as to position the infant's buttocks in the lateral direction. Realize.

FIG. 5 is a plan view showing the main parts of another embodiment of this invention. The seat 1 in FIG. 5 should be understood to be a modification of the baby carriage seat 1 in FIG. 1. The seat portion 2 of the seat 1 shown here is also formed in a trapezoidal shape. However, in this embodiment, the shape of the seat 2 itself is not as important as in the embodiment shown in FIG. 1 described above. That is, in this embodiment, the pair of handrail-like members 6 are not provided above the seat 2 so as to exactly follow both side edges of the seat 2, but are located slightly inside. Therefore, the pair of handrail-like members 6 becomes a more important element in determining the space 8 in FIG. 4. In this embodiment, the length Ws of the front edge of the seat portion 2 is directly
This does not define the width Wf of the front end of the space 8 in FIG. 4. This is because each handrail member 6 is selected to have a length that leaves a space of length Ls above the front portion of the seat portion 2. Therefore, seat part 2
Even if the length Ws of the front edge of the space 8 is actually shorter than the width Wf of the front edge of the space 8 in FIG. 4, the front edge of the space 8 in FIG. A dimension equivalent to the edge width Wf can be given. Further, the pair of handrail-like members 6 are positioned so as to sandwich both sides of a sitting infant, similar to the embodiment shown in FIG. 1 described above. Further, as another characteristic configuration of the pair of handrail-like members 6 in this embodiment,
Its rear end defines a narrower spacing than its front end. This ensures reliable lateral positioning of the infant's buttocks while
This has the effect of making the width Wf of the front end sufficient.

In addition, in this invention, the width dimension of the space surrounding the infant's legs is an important factor, but if there is a seat that can adjust this dimension, for example, such adjustment The space 8 shown in FIG. 4 above in the maximum possible dimension.
It can be said that it is sufficient if the dimensions of

[Effect of idea]

According to this invention, the lateral positioning of the infant's buttocks is achieved by a pair of handrail-like members originally provided in an ordinary baby carriage, and the seat has a front edge that is It has a trapezoidal shape that is longer than the edge. The pair of handrail-like members are positioned above the seat so as to form a gap between them and the seat to prevent the infant's legs from coming into contact with each other. Components of a baby carriage that support components that may come into contact with the infant's legs must have an inner width of 36 cm or more in the lateral direction. Therefore, the distance between the groins of the infant can be maintained at a predetermined value to prevent hip dislocation, and a stable environment can be provided for the infant without adding new parts.

That is, for the purpose of simply preventing dislocation of the hip joint, it may be said that the wider the width Wf of the front end of the space 8 shown in FIG. 4, the better. However, in the baby carriage that is the subject of this invention, it is not enough that the width Wf is just wide. This is because if the width Wf becomes wider, the baby carriage naturally becomes larger, and in light of the purpose of use of such a baby carriage, an excessive size becomes inconvenient for the childcare worker. For this reason, the inner dimension of the lateral width of a component of a stroller that supports a pair of handrails that may come into contact with an infant's legs must be ``36 cm or more.'' It is of great significance that the minimum necessary dimensions have been determined.

Furthermore, even if the seat is designed to allow dimensions that do not compress the infant's legs from the outside to the inside, this alone cannot completely prevent hip dislocation. . In other words, if the infant's buttocks move to one side of the seat, the legs on that side will be compressed inward. In this sense, in order to determine the lateral position of the butt of an infant sitting on the seat,
1 with an interval that holds both sides of a sitting infant
The existence of the pair of handrail-like members has an important meaning. Furthermore, since there is a gap between the pair of handrail-like members and the seat, it is possible not only to prevent the infant's legs from coming into contact with each other, but also to prevent the infant's legs from coming into contact with each other. , it is possible to move the handrail member closer to both armpits while positioning the infant's buttocks, whose width in the width direction is wider than the distance between the armpits, in the space between the handrail member and the seat. Therefore, the lateral position of the infant's buttocks can be more effectively positioned.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the appearance of a baby carriage that is an embodiment of this invention. FIG. 2 is an illustrative diagram showing the basic natural body shape of an infant. FIG. 3 is a graph showing the distribution of crotch distances in a newborn baby's natural body shape. FIG. 4 is a plan view showing a preferred example of the dimensions of the space provided above the seat according to this invention. FIG. 5 is a plan view showing the main parts of another embodiment of this invention. In the figure, 1 is the seat, 2 is the seat, 3 is the backrest, 6 is the handrail member, 8 is the space, W is the distance between the legs, Wf is the width of the front end of the space 8, and Wr is the width of the rear end of the space 8. It is the width.

Claims (1)

[Claims for Utility Model Registration] (1) A baby carriage equipped with a seat for an infant having a seat and a backrest, wherein the front edge of the seat is longer than the rear edge. The seat has a trapezoidal shape, and is provided with a pair of handrail-like members having an interval to pinch both sides of the baby in order to position the buttocks of an infant sitting on the seat in the lateral direction. The member is located above the seat so as to form a gap between the member and the seat to prevent the baby's legs from coming into contact with each other, and the member supports the pair of handrail-like members of the stroller. Components that may come into contact with the infant's legs must have an internal dimension of 36
A baby carriage characterized by being larger than cm. (2) The baby carriage according to claim 1, wherein the pair of handrail-like members have a narrowest interval at their rear ends and a widest interval at their front ends. (3) The baby carriage according to claim 1 or 2, wherein each of the handrail-like members is selected to have a length that leaves a space above the front part of the seat.