KR101174025B1 - Air Supply for Medical Mattress for Preventing Press Ulcer - Google Patents

Abstract

The present invention relates to a pneumatic pressure supply device for the pressure relief bed mattress for preventing bedsores of the patient, a plurality of flow paths connected to the alternate bed form mattress having a plurality of support channels to form a passage through which air flows, An air pump connected to each of the flow paths and supplying air to each of the flow paths, provided on each of the flow paths, and a supply valve selectively opened and closed to supply air to the corresponding flow paths when the air pump is driven; Discharge valves are provided on the passage, the discharge valve is opened and closed so that air is discharged from the passage and the support channel, the opening degree control valve for adjusting the opening degree of the passage, the respective air pump, supply valve, discharge valve and A pneumatic pressure supply device is provided for a shift support mattress for preventing bedsores, including a controller for adjusting an opening control valve. In addition, overshooting is prevented when the air pad is inflated, and the air pad can be replenished as much as the air pad is pressed down and leaked by the weight of the patient, thereby maintaining constant flotation force, thereby improving patient comfort. .

Description

Air supply for alternate bed support mattress for prevention of pressure sores {Air Supply for Medical Mattress for Preventing Press Ulcer}

The present invention relates to an air supply device, and more particularly, to an air pressure supply device of an alternate support mattress for preventing bedsores to prevent bedsores of patients.

Critically disabled patients, such as physically impaired patients, spend most of their days lying or sitting in wheelchairs and are living with the help of caregivers.

However, if you lie down or sit for a long time, excessive excessive pressure is continuously or repeatedly applied to the part that touches the floor such as the back or ass, so that the capillary blockage condition persists and blood pressure does not penetrate the skin tissue. Will occur.

The formation of pressure ulcers affects the stress on the lesion site and the time it takes for such stress to be applied.In the early stages, there is no damage to the skin epidermis, but discoloration. In severe cases, it can damage the subcutaneous fat layer or even muscle and bone tissue.

In addition, in such a case, the patient suffers a lot of pain and lowers the quality of life, and once the pressure sores occur, the recovery rate is slow due to the inconvenient behavior of the patient, and the elderly who have poor body healing ability become slower. This is difficult to recover and the wound is aggravated, which can lead to economic loss of treatment as well as death of the patient.

In order to prevent such bedsores, bed sores prevention products have been recently released. In recent years, a cushion, a mattress, and an air pad, which are typically blown air to support a patient's body more uniformly, are divided into a plurality of compartments, and have an independent expansion and contraction structure, and the air pad is alternately inflated. Alternating floating mattresses have been developed to reduce the contact pressure supported by contact with human skin by alternating levitation function that repeats contraction and contraction so that excessive contact pressure is not applied to a tissue at a long time.

On the other hand, the alternating-type mattress is generally inflated or contracted by supplying the air to implement the shift support function, by simply injecting or discharging air for each air pad, the air supply speed is not controlled, so When supplying air, the air flows suddenly and shock pressure is applied to the human body lying on the air pad, or it is completely discharged even when the air is discharged, and the air pad is no longer buoyant, so the air pad is narrowed and the body touches the hard ground. The grounding phenomenon may cause discomfort, and even when the air pad is inflated and the air pad is inflated, air leaks due to the weight of the patient and the flotation force gradually decreases.

The present invention is to solve the problems as described above, the present invention is to provide a pneumatic pressure supply device for the pressure relief mattress for preventing bedsores to increase the comfort of the patient by controlling the air supply and discharge more precisely do.

In order to solve the above problems, according to an embodiment of the present invention, a plurality of flow passages connected to the alternating portion form mattress having a plurality of support channels, respectively, to form a passage through which air flows, connected to each of the flow passages And an air pump for supplying air to each of the flow paths, provided on each of the flow paths, and selectively opened and closed when the air pump is driven to supply air to the corresponding flow paths, and provided on each of the flow paths. A discharge valve that opens and closes to discharge air from the flow path and the support channel, and is provided on each of the flow paths and controls an opening degree control valve for adjusting the opening degree of the corresponding flow path, and controls each of the air pumps, supply valves, discharge valves, and opening control valves. Provided is an air pressure supply device for an alternate support mattress for preventing bedsores comprising a controller.

A sensor for measuring the pressure or flow rate of the air flowing through the opening control valve and the air pressure in each support channel may be further provided.

The opening control valve may be adjusted according to the pressure or flow rate of the air measured by the sensor in order to prevent overshooting due to the flow pressure of the air supplied with the pressure in each support channel. Can be.

The opening control valve may be opened to the maximum in the initial expansion of the support channel, the opening degree is gradually reduced as the air is filled in the support channel.

Further, the air can be replenished by the amount of air leaking from the support channel in order to maintain a constant air pressure in the support channel even after the support channel is completed expansion.

When replenishing the air by the amount of air leaking from the support channel, the supply valve is opened and the opening control valve is opened at a predetermined angle to supply air as leaked to the support channel, and the discharge valve is opened to Excess air in the remaining flow path supplied to the support channel may be made to be discharged.

In addition, even when each of the support channels are contracted, at least a predetermined amount of air pressure may be maintained in the support channels.

According to the air pressure supply device of the shift support mattress for preventing bedsores of the present invention has the following effects.

First, since air is supplied through the opening control valve when air is supplied to the shift support mattress, the air pressure of each air pad of the support channel of the shift support mattress can quickly reach the steady state pressure without overshooting. The phenomenon that the patient is in contact with the corresponding air pad of the mattress is prevented from impact compression by overshooting, thereby improving the comfort of the patient.

Second, since each air pad of the support channel is supplemented by the amount of air leaked by the weight of the patient when the support is in a support state, the patient's comfort is improved.

Third, even when each air pad of the support channel is contracted, the air pressure is not completely eliminated and a certain amount of air remains so that the contracted support channel is prevented from being constricted by the weight of the patient, thereby supporting the part where the air pad is contracted to some extent. Therefore, the grounding phenomenon that the patient directly touches the hard floor is prevented, and the pressure is prevented from being excessively applied to the human contact point around the contracted air pad, thereby improving the comfort of the patient.

1 is a perspective view showing an alternate floating mattress and an air supply device according to an embodiment of the present invention;
FIG. 2 is a side view showing a state in which the alternate support mattress of FIG.
3 is a block diagram showing the overall configuration of the air supply device of FIG.
4 is a graph showing the pressure change of each support channel when the alternate support mattress of FIG.
5 is a graph showing a pressure change when air is supplied to an air pad;
6 is a graph showing the change in the opening degree of the opening control valve when air is supplied to the air pad.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In describing the present embodiment, the same designations and the same reference numerals are used for the same components, and further description thereof will be omitted.

Prior to describing the air pressure supply device of the shift-supporting mattress for preventing bedsores of the present invention, the shift-supporting mattress 100 will be briefly described.

As shown in FIGS. 1 and 2, the alternating-type mattress 100 is provided with a plurality of mutually partitioned air pads 150 to independently supply or discharge air to each of the air pads 150. A plurality of support channels 110, 120, and 130, which are flow paths of air independent of each other, are formed. That is, each of the support channels 110, 120, and 130 are provided with a plurality of air pads 150, respectively.

In the present embodiment, the shift support mattress 100 is three suspension channels (110, 120, 130) are formed to be alternately supported by way of example.

That is, as illustrated in FIGS. 2A to 2C, the air pad 150 connected to the first support channel 110 and the air pad 150 connected to the second support channel 120 and the third support channel ( The air pads 150 connected to the 130 are made to be supported alternately or sequentially.

The alternate support mattress 100 is expanded and contracted as each of the support channels 110, 120, 130 are alternated with each other as shown in FIGS. 2 a to 2 c according to the air supply of the air supply device 200. It is made to support the patient. Of course, the shift support mattress as described above can be driven to be inflated while changing one of the three support channels (110, 120, 130) and the rest is in a contracted state, two support channels are expanded and only one contraction It may be made to alternately support the levitation state, it may be made to alternate levitation in a state that all the support channels are expanded or contracted at the same time. In the present embodiment, the air supply device is driven so that the two support channels are expanded and only the other one is contracted.

As shown in FIG. 3, the air pressure supply device of the shift support mattress for preventing bedsores according to the present embodiment includes a flow path 210, 220, 230, an air pump 202, a supply valve 212, 222, 232, and discharge. The valves 214, 224, and 234, the opening control valves 216, 226, and 236, the sensors 218, 228, and 238, and a controller (not shown) may be included.

The flow paths 210, 220, and 230 are provided in plural to be connected to the support channels 110, 120, and 130 of the shift support mattress 100 to form passages through which air is supplied. In the present embodiment, as described above, the shift support mattress 100 includes three support channels such as the first support channel 110, the second support channel 120, and the third support channel 130. A plurality of flow paths may be formed in the first flow path 210 to the third flow path 230 so as to be connected to each of the supporting channels, respectively. That is, the first channel 210 is connected to the first support channel 110, the second channel 220 is connected to the second support channel 120, and the third channel is connected to the third support channel 130. 230 is connected.

An air pump 202 for supplying air to each of the flow paths 210, 220, and 230 is provided. As the air pump 202, an oilless air compressor capable of supplying clean air with low noise and easy maintenance may be applied.

The supply valves 212, 222, and 232 are provided between the air pumps 202 and the shift support mattress 100 on the flow paths 210, 220, and 230, and the air pumps 202 may be driven. Is selectively opened or closed to allow the air supplied from the air pump 202 to flow or block on the flow paths 210, 220, and 230.

In addition, the discharge valves 214, 224, and 234 are provided between the supply valves 212, 222, and 232 on the flow paths 210, 220, and 230, and the alternate floating mattress 100, and are selectively opened or closed. Thus, air may be discharged from a corresponding flow path in which the discharge valves 214, 224, and 234 are installed, and a corresponding support channel of the alternate support mattress 100 connected to the flow path.

The opening control valves 216, 226, and 236 are provided between the discharge valves 214, 224, and 234 on the flow paths 210, 220, and 230 and the alternating support mattress 100, respectively. It can be made to adjust the flow rate of the air by adjusting the opening degree of.

In addition, the sensors 218, 228, and 238 are provided between the opening control valves 216, 226, and 236 on the respective flow paths 210, 220, and 230, and the alternate floating mattress 100, and the air flowing in the flow paths. To measure the pressure and flow rate. That is, it may be to measure the flow rate or pressure of the air supplied from the air pump 202 and passed through the opening control valves (216, 226, 236) supplied to the shift-support mattress 100. In addition, the sensors 218, 228, and 238 may be configured to measure pressure in a corresponding support channel connected to the flow path.

Although not shown in the drawings, the controller (not shown) includes the respective sensors 218, 228, and 238, the opening control valves 216, 226, and 236, the discharge valves 214, 224, and 234, and a supply valve. 212, 222, 232 and the air pump 202 is connected to control the components.

In the present embodiment, the air is supplied to each of the support channels 110, 120, and 130 of the shift support mattress 100 through the air pump 202, but other materials such as water in addition to air are described. Can be supplied.

The air pressure supply device 200 of the shift support mattress for preventing bedsores according to the present embodiment as described above may be made to support the shift support mattress 100 in a support cycle as shown in FIG.

First, air is supplied to the first channel 210 to expand the first support channel 110. Here, the means that the support channels 110, 120, 130 are expanded means that each air pad 150 provided in the support channel is expanded.

In addition, air is supplied to the second flow path 220 while maintaining the expanded state of the first support channel 110 to expand the second support channel 120.

In addition, as the first support channel 110 contracts, the second support channel 120 maintains an expanded state and air is supplied to the third flow path 230 so that the third support channel 130 Inflate. Here, the means that the levitation channels (110, 120, 130) is contracted means that each air pad 150 provided in the levitation channels (110, 120, 130) is contracted.

Then, as the second support channel 120 contracts, the third support channel 130 remains in an expanded state, and the first support channel 110 that has been contracted expands.

In addition, as the third support channel 130 contracts, the first support channel 110 remains in an expanded state, and the second support channel 120 expands.

That is, when the first support channel 110 to the third support channel 130 is expanded, the air pump 202 is driven, and supply valves 212, 222, and 232 of the corresponding flow paths 210, 220, and 230. ) Is opened, the discharge valves 214, 224, 234 are closed, and the openings of the opening control valves 216, 226, 236 are opened so that air is supplied to the support channel.

When air is supplied to the support channel, the air may be supplied too hard, or overshooting of the internal pressure of the air pad may be caused by the flow pressure of the air, as shown by a dotted line in FIG. 5. When the overshooting phenomenon occurs as described above, a phenomenon in which the portion supported by the corresponding air pad of the human body may be impacted may occur, and the opening degree of the opening control valves 216, 226, and 236 may be adjusted to prevent this. In more detail, as shown in FIG. 6, the opening control valves 216, 226, and 236 are opened to the maximum at the beginning of air supply, and the opening degree gradually decreases as air is filled in the support channel. It may also be made.

As shown in the solid line of FIG. 5, the open pad internal pressure can reach a steady state quickly without an overshooting phenomenon by the action of the opening control valves 216, 226, 236 as described above.

At this time, the flow rate supplied from the sensors 218, 228, 238 and the pressure in the flotation channel may be measured and the opening degree of the opening control valves 216, 226, 236 may be adjusted based on this.

When the expansion of the first support channel 110 to the third support channel 130 is maintained, the supply valves 212, 222, and 232 and the discharge valves 214, 224, and 234 of the corresponding flow path are closed to allow air. Is filled in the support channel.

Meanwhile, even when the support channels 110, 120, and 130 are expanded, air in the air pad 150 may leak due to the weight of the patient. In this case, in order to maintain a constant buoyancy to support the patient may be made to replenish the amount of air leaked in the support channels (110, 120, 130) of the air pad 150 leaked air. When replenishing the leaked air as described above, the air pump 202 is driven, the supply valves (212, 222, 232) of the corresponding flow path is opened, the opening control valves (216, 226, 236) is a predetermined angle It is opened, and the discharge valves 214, 224, 234 are also opened so that the remaining air supplied through the opening control valves 216, 226, 236 is discharged.

When the leaked air is replenished in the support channels 110, 120, and 130, the supply valves 212, 222, and 232 and the discharge valves 214, 224, and 234 may be closed.

In addition, when the first support channel 110 to the third support channel 130 is contracted, the discharge valves 214, 224, and 234 of the corresponding flow paths 210, 220, and 230 are opened to support the support channel 110. , 120, 130 to exhaust the air.

At this time, if the air in the air pad 150 is completely discharged when the air pad 150 of the support channel (110, 120, 130) is contracted, the air pad 150 is narrowed to support the human body As a result, the body may come into contact with the hard supporting surface of the floor, causing discomfort to the patient, or excessive pressure on the body contact point around the contracted air pad. Therefore, in order to prevent this, even when the air pad 150 is contracted, the air in the air pad 150 may not be completely discharged and may be made to remain a certain amount to maintain a constant air pressure. Therefore, even when the air pad 150 is contracted, a certain amount of air pressure is maintained on the air pad, so that the human body may be supported to some extent even when the air pad 150 is contracted, thereby preventing the above phenomenon from occurring.

It will be apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. It is obvious to them. Therefore, the above-described embodiments should be regarded as illustrative rather than restrictive, and thus, the present invention is not limited to the above description and may be modified within the scope of the appended claims and their equivalents.

100: shift support mattress 110: first support channel
120: second support channel 130: third support channel
150: air pad 200: air supply device
202: air pump 210: the first euro
212: first supply valve 214: first discharge valve
216: first opening control valve 218: first sensor
220: second euro 222: second supply valve
224: second discharge valve 226: second opening control valve
228: second sensor 230: third euro
232: third supply valve 234: third discharge valve
236: third opening control valve 238: third sensor

Claims (7)

A plurality of flow paths connected to alternating-type mattresses having a plurality of support channels to form passages through which air flows;
An air pump connected to each of the flow paths and supplying air to each of the flow paths;
A supply valve provided on each of the flow paths, the supply valve being open or closed when the air pump is driven to allow air to flow or shut off in the flow path;
A discharge valve provided on each of the flow paths, the discharge valve being opened and closed to discharge air from the corresponding flow path and the support channel;
An opening control valve provided on each of the flow paths and controlling an opening degree of the corresponding flow path;
A sensor for measuring the pressure or flow rate of the air flowing through the opening control valve and the air pressure in each support channel;
A controller for controlling each of the air pumps, supply valves, discharge valves, and opening control valves;
And,
In order to prevent overshooting by the flow pressure of the air supplied to the pressure in each of the buoyant channel (temporary), the opening degree of the opening control valve is adjusted according to the pressure or flow rate of the air measured by the sensor Pneumatic supply of preventive shift mattress.
delete delete The method of claim 1,
The opening control valve,
The air pressure supply device of the bed rest preventive floating mattress, characterized in that the maximum opening in the initial expansion of the support channel, the opening degree is gradually reduced as the air is filled in the support channel. The method of claim 1,
An air pressure supply device for a pressure-relief mattress for preventing bedsores, characterized in that for replenishing the air corresponding to the amount of air leakage in the support channel to maintain a constant air pressure in the support channel even after the support channel is completed expansion. The method of claim 5,
When replenishing the air corresponding to the amount of air leakage in the support channel,
The supply valve is opened and the opening control valve is opened at a predetermined angle to supply air corresponding to the amount of air leaked to the support channel.
The discharge valve is open air pressure supply device for the shift support mattress for preventing bedsores, characterized in that the extra air in the remaining flow path supplied to the support channel is discharged. The method of claim 1,
Air pressure supply device for the pressure relief mattress for preventing bedsores, characterized in that a certain amount of air pressure is maintained in the support channel even when the respective support channels are contracted.

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