JPH0356058B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a mat for preventing pressure sores that occur in sick people who are unable to move their bodies and remain in bed for a long period of time, particularly an air mat. The present invention relates to a mat for preventing bedsores, which is characterized in that it prevents the user from experiencing a seasickness-like condition when the chamber is periodically expanded and contracted.

[Prior art] Air mats are generally used as mats for preventing bedsores, and this type of conventional air mat _E1 is
As shown in FIG. 3, tubular air sacs 1a, 1b, 2a, 2b...5a, 5b which can be expanded and contracted are arranged in parallel, and these air sacs 1a, 1 are arranged in multiple rows.
b...From 5a, 5b, air sacs 1a, 2 in every other row
a...Air sac group _A1 connecting 5a at one end,
Air sac groups A ₁ and B ₁ of two systems with air sac group B ₁ connecting the remaining air sacs 1b, 2b...5b at the other end side.
It is very common to have a structure in which the air sac groups A ₁ and B ₁ are inflated and deflated alternately (for example, Japanese Patent Laid-Open No. 60-96251).

As an improvement on this, the invention of Japanese Patent Application No. 116259/1983 was proposed by the same applicant as the present application.
As shown in FIG. 4, the bedsore prevention mat _E2 of the present invention has a first air chamber group _A2 and a second air chamber group _B2.
is a large number of air chambers 101 that can be expanded and contracted respectively.
or each air chamber 101 or 10 in series connected to 105 via the conduction portion 102 or 106;
5, at least one air chamber 104 or 1 which can be expanded or contracted to one side via a conduction part 103 or 107.
The air chambers 101 and 104 of the first air chamber group A ₂ and the air chambers 105 and 108 of the second air chamber B ₂ are arranged in a plover shape. and the first air chamber group _A2 and the second air chamber group
Air is supplied alternately to each air chamber group B ₂ and each air chamber group A ₂ ,
This is done from one end of _B2 .

[Problems to be Solved by the Invention] The bed sore prevention mat E ₁ in Japanese Patent Application No. 60-96251, which is generally adopted as described in the prior art, has air bladders 1a to 5a in every other row and the remaining air bladders. When supplying and exhausting air to two air bladder groups A ₁ and B ₁ of 1b to 5b, for example, while supplying air to air sac group A ₁ of one system, the air sacs of the other system are When the group B ₁ is evacuated, the air sacs 1a, 1b to 5a, 5b are formed into a tube shape and arranged in parallel, and the air sac group A ₁ of each system is
Since a plurality of rows are connected in series at every other row for each B ₁ , one air sac group A ₁ is connected from the air sac 1a to the air sacs 2a, 3a, 4a, 5 as the air advances.
In the other air sac group _B1 , air sacs 5 to 4b, 4b, 2b, and 1b contract in this order.
Place the air mattress E ₁ on the person lying on the air mattress E _1.
It gives the feeling of moving up and down, and the air sacs 1a, 1b ~
5a and 5b vibrate, giving the sensation of moving undulations, and if you are made to experience this kind of up-and-down shaking and undulations moving periodically for a long period of time, it will cause damage to the inner ear's semicircular canals. Stimulating the deep senses of the body and disrupting the sense of parallelism, the result is a state similar to car sickness or seasickness, and patients with weakened bodies are particularly sensitive to these stimuli. Because of this, it was easy to lose the sense of parallelism, leading to a state similar to seasickness.

On the other hand, in the patent application No. 116529/1986, the air chambers 101 or 105 connected in series in either the first or second air chamber group A ₂ or B ₂ are placed in a side row. The connected air chambers 104 or 108 are always expanded in rows and columns to support vertical movement and to slow the supply and discharge of air to the plurality of air chambers 101, 104, 105, and 108. ，
In that the undulations caused by the waves 104, 105, and 108 do not give a feeling of movement, it is compared to the structure made of a cylindrical air bladder as in the above-mentioned Japanese Patent Application No. 60-96251. However, the first and second air chamber groups of patent application No. 116529/1983
In the relationship between the series air chambers 101 and 105 of A ₂ and B ₂ and the side row air chambers 104 and 108, even if the number of side row air chambers 104 and 108 is increased, it is necessary to form them individually. Many air chambers 101, 10
Since the flow of air to 4, 105, and 108 is linear and monotonous, there have been problems such as not being able to completely eliminate the feeling of seasickness.

The present invention has been made in view of the above-mentioned problems of the conventional technology, and its purpose is to provide air to the air chambers of the first air chamber group and the air chambers of the second air chamber group. The flow of air is made to be tortuous and multidirectional in the horizontal and vertical directions, making the expansion and contraction of many air chambers multifaceted and complicated, which occurs when many air chambers expand and contract. To provide a mat for preventing bedsores that completely eliminates the wave phenomenon that gives a feeling of moving waves and completely eliminates the feeling of seasickness.

[Means for Solving the Problems] In order to achieve the above object, the bedsore prevention mat of the present invention has a large number of air chambers that can be expanded and contracted into a first air chamber group and a second air chamber group. The first air chamber group and the second air chamber group are divided into two systems, such that the air chambers of the first air chamber group and the air chambers of the second air chamber group are plover-shaped. In the mat for preventing bedsores, in which air is alternately supplied to both air chamber groups and air is exhausted from one end of each air chamber group, the first air chamber group has a large number of air chambers connected through a conductive part. and side rows on both sides in which air chambers are connected in series as rows, and air chambers are connected in columns from each air chamber in the series to one side and the opposite side at every other side via conductive parts,
The second air chamber group includes a number of air chambers located at different levels between the series air chambers of the first air chamber group and the side row air chambers, which are arranged alternately in the horizontal and vertical directions via conductive parts. It is made up of a series of key-shaped keys that are connected in series so that they are at different levels.

[Function] When air is alternately supplied and exhausted to the first and second air chamber groups, the first air chamber group has a number of air chambers connected in series that alternately expand and contract in every other row in the lateral direction. At the same time, as the many air chambers connected in series expand and contract, the air chambers in one side row and the opposite side row expand and contract every other time in the longitudinal direction on both sides, and the first air chamber expands and contracts in the longitudinal direction on both sides. A large number of air chambers of the second air chamber group are located at different levels between the series air chambers of the chamber group and the side row air chambers. The air chamber expands and contracts in a zigzag manner in the horizontal and vertical directions at different levels, and as the air flows in a tortuous and multidirectional manner, the numerous air chambers expand and contract in a multifaceted manner. Completely eliminates the complex wave phenomenon that occurs when many air chambers expand and contract, giving the impression of moving undulations. In addition, the large number of air chambers in one of the air chamber groups always expands in rows and columns to support the human body and prevent the human body from feeling vertical movement. The large number of air chambers connected through conductive parts has a slow air supply and discharge speed, and the expansion and contraction of air is very slow, completely eliminating the wave phenomenon and causing seasickness. It does not cause any condition at all.

In addition, the large number of air chambers that are connected through conductive parts and formed individually come into surface contact with the human body, so the feeling of moving undulations due to the linear contact sensation similar to that of conventional tubular air sacs. Since there is no
Not only does it not cause a condition like seasickness, but also local congestion can be avoided.

Therefore, conditions such as seasickness are not caused at all, and furthermore, it is possible to effectively prevent the occurrence of congestion, which is considered to be a cause of bedsores.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, an air mat E has a series connection in which a large number of air chambers 1 which can be expanded and contracted are connected in horizontal rows via conduction parts 2, and a conduction part 3, 4 connected to each air chamber 1 connected in series with the series as a main row. A first air chamber group N has side rows on both sides in which air chambers 5 and 6 which can be expanded and deflated every other time are connected in tandem to one side and the opposite side via a A key-shaped series connection in which the chambers 7 are successively connected to the series air chambers 1 of the first air chamber group N and the air chambers 5 and 6 of the side rows so that the chambers 7 are staggered at different levels. A second air chamber group M with has been done. That is, the first air chamber group N ₁ and the second air chamber group
M ₁ , first air chamber group N ₂ , second air chamber group M ₂ , first
air chamber group N ₃ , second air chamber group M ₃ , ...first air chamber group N _o (n is an integer, for example 1 to 5), second air chamber group
The first air chamber group N ₁ to _{N o} and the second air chamber group M ₁ to _{M o} are arranged in every other row in the order of M o ( _n is an integer, for example, 1 to 5), and the first air chamber group The air chambers 5 of the side row on one side of N ₁ and the air chambers 6 of the side row on the other side of the first air chamber group N ₂ are arranged facing each other.
and 6 are arranged alternately in series, and the second
A large number of air chambers 7 of the air chamber group _M1 are in the first air chamber group M1.
The air chambers _{1 ,} 5, 6 of the first air chamber group N and the second
The air chambers 7 of the air chamber group M are arranged in a staggered manner with respect to each other. Therefore, the large number of air chambers 7 of the second air chamber group M are located at different levels between the series air chamber group 1 of the first air chamber group N and the side row air chambers 5 and 6, and They are connected horizontally and vertically at different levels.

The plurality of first air chamber groups N ₁ to _{N o} are connected to an air sac 10 disposed on one side of the air mat E via a conductive portion 9 at the air chamber 1 located at the end of the series,
The plurality of second air chamber groups M ₁ to _{M o} are connected to the air chamber 12 disposed on one side of the air mat E via the conduction part 11 at the air chamber 7 located at the end of the series. The system of air chamber groups N ₁ to N _o and the second air chamber group
It is divided into two systems: M ₁ to M _o systems. The first and second air chamber groups N ₁ to N _o and M ₁ to _{M o} of these two systems have respective air sacs 10,
Air is supplied and exhausted from connection ports 13 and 14 provided at 12.

Note that the first air chamber group is located at both ends of the air mat E.
It is sufficient for N ₀ and N _o1 to have air chambers 5 or 6 connected to every other side row only to one side or only to the other side.

Further, as shown in FIG. 2, the first and second air chamber groups N and M are replaced by the first air chamber groups N ₀ to N _o1 and the second air chamber group, instead of the air bladders 10 and 12. Group M ₁
The air chambers 1 or 7 at the ends of each series of M _o may be serially connected in the side row direction via the conductive portions 15 or 16. The connection ports 13 and 14 are preferably led from the most advanced air chambers 1 and 7 of each air chamber group N and M.

Furthermore, as one of the factors that promote bedsores,
One example is the propagation of sterilization due to the temperature and humidity of the bed.
By making an appropriate number of small holes (not shown) in the air chambers 8, the expansion and contraction of the air chambers 1, 5, 6, and 7 are made more slow, which makes it difficult to feel seasick, and at the same time makes it easier to sleep. It is preferable to blow in fresh air to suppress the growth of bacteria and prevent the development of bedsores.

[Effects of the Invention] Since the present invention has the above-described configuration, when air is alternately supplied and exhausted to the first and second air chamber groups, every other air chamber group is placed on both sides of the first air chamber group. A large number of air chambers are connected and arranged in horizontal rows, and a large number of air chambers of the second air chamber group are connected to each other in rows on both sides of the first air chamber group. Since the air chambers are arranged at different levels, the flow of air to the many air chambers becomes tortuous and multidirectional, and the expansion and contraction of the many air chambers becomes multifaceted and complicated. A large number of air chambers in either the first air chamber group or the second air chamber group always inflate in horizontal and vertical columns to support the human body and prevent the user from feeling vertical movement. Do it like this. The air supply and discharge speeds of the large number of air chambers connected through the conductive portions are slow, and the expansion and contraction of the air chambers becomes very slow. In particular, the supply and discharge of air to the air chambers in the side rows, which are branched out to both sides of the series, and the numerous air chambers connected in a zigzag pattern at different levels, becomes even slower, and expansion and contraction become even more slow. It does not cause a state like intoxication.

In addition, a large number of air chambers that are connected through conductive parts and formed individually come into surface contact with the human body, so that local congestion can be avoided.

[Brief explanation of drawings]

Fig. 1 is a plan view showing the air mat, Fig. 2 is a plan view of the air mat showing other connection means for connecting the first air chamber group and the second air chamber group, and Figs. 3 and 4 are conventional FIG. 3 is a plan view of a mat for preventing bedsores. N...first air chamber group, M...second air chamber group,
1, 5, 6, 7... air chamber, 2, 3, 4, 8... conduction section, 10, 12... air sac, 13, 14... connection port, 15, 16... conduction section.

Claims (1)

[Claims] 1 A large number of air chambers that can be expanded and contracted are divided into two systems, a first air chamber group and a second air chamber group, and the air chambers of the first air chamber group and the air of the second air chamber group are separated. The first air chamber group and the second air chamber group are arranged so that the chambers are plover-shaped, and air is alternately supplied and exhausted to both air chamber groups from one end of each air chamber group. In the mat for preventing bedsores, the first air chamber group is a series in which a large number of air chambers are connected in a horizontal row through a conductive part, and one of the first air chambers is connected every other air chamber through a conductive part from each air chamber in the series. The second air chamber group has a series of air chambers in the first air chamber group and air chambers in the side rows, and the second air chamber group has air chambers in series in the first air chamber group and air chambers in the side rows. It is characterized by having a key-shaped series in which a number of air chambers located at different levels between the air chambers are continuously connected in the horizontal direction and the vertical direction so as to alternately form different levels through conductive parts. Mats to prevent bedsores.