Pressure sore prevention equipment for old people lying nursing for severe illness

Abstract

The pressure sore prevention equipment comprises a pressure reduction pad and a mattress plate, two layers of sealing pads are fixedly installed in the pressure reduction pad in an embedded mode, the pressure reduction pad forms three spaces through the two layers of sealing pads, and a plurality of supporting sleeves are installed in the pressure reduction pad side by side at equal intervals. When the supporting strength to the body of a patient needs to be improved, the supporting strength is increased by increasing the air supply amount to the upper-layer space, when the supporting strength needs to be reduced, upper-layer air is pressed into an air channel through an air through pipe by means of self-weight extrusion of the patient and the bed surface, and at the moment, most of the air is reversely exhausted through an air pump machine which is in indirect through connection with a butt joint. When the supporting strength is reduced, the air amount of the upper-layer space is reduced, the body is attached to the middle-layer water layer under the pressure of the weight of the patient, and meanwhile the attaching degree of the body and the middle-layer water layer is adjusted by adjusting the supporting amount of the upper-layer air; furthermore, the supporting strength and the fitting degree to the body of the patient can be adjusted according to actual requirements.

Description

Technical Field

[0001] The invention relates to the technical field of medical care equipment, and in particular to a device for preventing pressure sores in elderly patients with severe lying conditions. Background Art

[0002] Pressure sores are mainly caused by continuous pressure acting on the areas under the skin and on the tissues, leading to local blood circulation disorders. This condition is common in patients who are bedridden for a long time or have difficulty moving. Elderly patients with serious illnesses or extremely weak physical conditions usually need to receive continuous medical and daily care from caregivers, especially when bedridden. Elderly patients are very prone to pressure sores. This is because prolonged pressure is concentrated on certain parts of the body, causing damage to the skin and tissues, which in turn causes tissue ischemia and necrosis, resulting in pressure sores.

[0003] Due to the different weights and heights of patients, the existing anti-pressure sore equipment cannot meet the actual use needs of patients. When the support strength is high, the support strength for local parts of the body is relatively large, which in turn increases the pressure on the local body, easily causing damage to the skin or tissue and forming local pressure sores. Secondly, when the pressure is relatively low, although the anti-pressure sore equipment has a high degree of fit to the patient and can prevent pressure sores to a certain extent, the support strength for the body is relatively small. When used for a long time, it is easy to cause fatigue of muscles and joints such as the spine. As a result, the support strength and fit of the lying care anti-pressure sore equipment to the body cannot be adjusted according to actual needs, which is not conducive to use.

[0004] Therefore, a device for preventing pressure sores for the nursing of the elderly with severe lying condition is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide an anti-pressure sore device for lying-down care of the elderly with severe conditions, so as to solve the problem raised in the above-mentioned background technology that when the support strength is high, it is easy to cause damage to the skin or tissue and form local pressure sores, and when the pressure is low, it is easy to cause fatigue of the muscles and joints such as the spine after long-term use, and thus the support strength and fit of the lying-down care anti-pressure sore device to the body cannot be adjusted according to actual needs.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A device for preventing pressure sores for lying nursing of elderly patients with severe illness, comprising a pressure relief pad and a mattress plate, wherein two layers of sealing pads are fixedly mounted in the pressure relief pad, and the pressure relief pad forms three spaces through the two layers of sealing pads, wherein a plurality of support sleeves are equidistantly mounted side by side in the pressure relief pad, and the support sleeves are fixedly mounted on the upper and lower ends of the inner wall of the pressure relief pad by penetrating the two layers of sealing pads, and wherein a nursing pad is fixedly mounted above the pressure relief pad, and a soft strip is fixedly mounted on the nursing pad, and the soft strips are equidistantly arranged when the nursing pad is unfolded and fitted on the pressure relief pad;

[0008] Support tubes are equidistantly installed in the middle of the mattress board, and the support tubes and the mattress board are connected. An air pump is fixedly installed on one side of the mattress board, and the air pump and the mattress board are connected.

[0009] In the above scheme, preferably: a concave decompression groove for placing a body part is provided on the top of the nursing pad, an adhesive patch is provided on the top of the decompression pad, and adhesive cotton is provided on the back of the nursing pad.

[0010] In the above scheme, preferably: the adhesive cotton and the adhesive patch are arranged in a laminated manner, and the soft strip is arranged with an adjustable spacing through the lamination of the adhesive cotton and the adhesive patch.

[0011] In the above scheme, preferably: an air passage tube is embedded and installed inside the support sleeve, and the air passage tube is fixedly fitted to the upper and lower ends of the inner wall of the pressure relief pad, an airway is provided below the pressure relief pad, and the airway is located at the lower end of the air passage tube and is set through.

[0012] In the above scheme, preferably: a docking joint is fixedly installed above the mattress board, and the docking joint and the mattress board are arranged through, the docking joint is located on both sides of the airway, and the airway is fixedly connected with the mattress board through the docking joint.

[0013] In the above scheme, preferably: a connecting piece is provided in the middle of the support tube, and the support tube is symmetrically and movably arranged with equal length through the connecting piece, a connecting tube is provided on the inner side of the connecting piece, and the connecting tube and the symmetrically arranged support tube are through-connected.

[0014] In the above scheme, preferably: air inlets for gas delivery are symmetrically installed on both sides of the air pump machine, a sealing port is provided on one side of the pressure reducing pad, and the sealing port is located in the middle layer of the three spaces formed by the sealing pad.

[0015] In the above scheme, preferably: connecting hoses for tilting are provided in the middle of both ends of the mattress board, supporting cross bars are symmetrically installed on both sides of the connecting hose, and the supporting cross bars are fixedly connected to both ends of the mattress board.

[0016] In the above scheme, preferably: ventilation holes are provided at the upper and lower ends of the pressure relief pad, the air vent is fixedly attached to and connected with the upper end of the pressure relief pad through the ventilation holes, and the airway is connected with the lower space through the ventilation holes, and the two layers of the sealing pads are made of air-permeable and water-tight polymer materials.

[0017] The present invention provides a device for preventing pressure sores in elderly patients with severe lying nursing, which has the following technical points and beneficial effects:

[0018] 1. The present invention designs structures such as sealing pads, air passages and airways. When it is necessary to increase the support strength for the patient's body, the air supply to the upper space is increased to increase the support strength. When it is necessary to reduce the support strength, the upper gas is pressed into the airway through the air passage by the self-weight of the patient and the bed surface. At this time, most of the gas is discharged in the reverse direction through the air pump machine indirectly connected to the joint, thereby reducing the support strength. When the support strength is reduced, the air volume in the upper space is reduced, thereby making the patient's body fit with the middle water layer under the pressure of his own weight. At the same time, the support amount of the upper gas is adjusted to adjust the fit between the patient's body and the middle water layer, thereby being able to adjust the support strength and fit of the patient's body according to actual needs.

[0019] 2. The present invention designs structures such as connecting hoses, connecting parts and sealing pads. The connecting hoses and connecting parts are used to facilitate the inclination adjustment of the mattress board of the bed. When the patient lies on his side, the fit to the patient's body is improved to reduce the local pressure on the body. When the fit to the side is improved by reducing the amount of gas in the upper space, the water on one side of the middle water layer gathers to the other side under its own weight, and the upper gas gathers to one side under the overall pressure of the patient lying on the nursing pad, thereby realizing partial space exchange between the middle water layer and the upper gas space. At this time, the gas gathered on one side of the upper space is used for side support. Secondly, the middle water layer on the other side improves the fit to the patient's body to prevent local excessive pressure from forming pressure sores.

[0020] 3. The present invention designs structures such as nursing pads, soft strips and adhesive patches. When patients with different heights are subjected to different critical pressure parts, the nursing pads between the soft strips are squeezed and folded to make the decompression grooves correspond to the critical pressure parts of the patients, and the nursing pads are attached to the adhesive patches. When the patient lies down, the ridges formed by the pressurized and folded nursing pads between the soft strips support the patient's body, and the pressure on the critical pressure parts is reduced by the decompression grooves, thereby preventing the occurrence of pressure sores. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the disassembled structure of the pressure relief pad and the mattress board in the present invention;

[0023] Figure 3 It is a schematic diagram of the partial structure of the mattress board in the present invention;

[0024] Figure 4 This is a schematic diagram of the disassembled structure of the nursing pad and the pressure relief pad in the present invention;

[0025] Figure 5 is a schematic cross-sectional view of a local structure of a pressure relief pad in the present invention;

[0026] Figure 6 is a schematic diagram of a partial cross-sectional structure of a pressure relief pad in the present invention;

[0027] Figure 7 It is a schematic diagram of the local structure of the support sleeve in the present invention;

[0028] Figure 8 It is a schematic diagram of the local structure of the connecting piece in the present invention.

[0029] In the figure: 1. pressure relief pad; 101. sealing pad; 102. support sleeve; 103. air vent; 104. airway; 2. mattress board; 201. docking joint; 202. air pump; 2021. air inlet; 203. support tube; 2031. connecting tube; 204. supporting cross bar; 205. connecting piece; 3. connecting hose; 4. sealing port; 5. nursing pad; 6. pressure relief groove; 7. soft strip; 8. adhesive patch. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figures 1 to 8 The present invention provides a technical solution for a device for preventing pressure sores in elderly patients with severe lying nursing:

[0032] A device for preventing pressure sores for lying nursing of elderly patients with serious illnesses comprises a pressure relief pad 1 and a mattress plate 2, wherein two layers of sealing pads 101 are fixedly mounted in the pressure relief pad 1, and the pressure relief pad 1 forms three spaces through the two layers of sealing pads 101, and a plurality of support sleeves 102 are equidistantly mounted side by side in the pressure relief pad 1, and the support sleeves 102 penetrate the two layers of sealing pads 101 and are fixedly mounted at the upper and lower ends of the inner wall of the pressure relief pad 1, a nursing pad 5 is fixedly mounted above the pressure relief pad 1, and a soft strip 7 is fixedly mounted on the nursing pad 5, and the soft strips 7 are equidistantly arranged when the nursing pad 5 is unfolded and fitted on the pressure relief pad 1;

[0033] Support tubes 203 are equidistantly installed in the middle of the mattress board 2, and the support tubes 203 and the mattress board 2 are connected. An air pump 202 is fixedly installed on one side of the mattress board 2, and the air pump 202 and the mattress board 2 are connected.

[0034] As an embodiment of the present invention, Figures 1 to 7As shown, a sealing port 4 is provided on one side of the pressure relief pad 1, and the sealing port 4 is located in the middle layer of the three spaces formed by the sealing pad 101, and ventilation holes are provided at the upper and lower ends of the pressure relief pad 1, and the air passage 103 is fixedly attached to and connected with the upper end of the pressure relief pad 1 through the ventilation holes, and the airway 104 is connected with the lower space through the ventilation holes, and the two layers of sealing pads 101 are made of air-permeable and water-tight polymer materials;

[0035] During operation, water at a comfortable temperature is added to the middle layer of the three spaces formed by the pressure relief pad 1 through the sealing port 4. When the patient lies flat on the nursing pad 5, since the air passage 103 is connected to the pressure relief pad 1 through the vent hole, and the airway 104 is connected to the lower space through the vent hole, the air is supplied to the air passage 103 and the lower space through the airway 104, and then the gas is input into the upper space through the air passage 103, and the gas in the lower space enters through the polymer material sealing pad 101 and the middle water layer. To the upper space, thereby improving the air supply efficiency to the upper space. Since the middle layer is a water layer, it is prevented that the gas in the upper space is backflowed to the lower space through the sealing pad 101 and the middle water layer (because after the gas in the upper space enters the middle water layer, the gas will float above the water and will not enter the lower space, and there will be no fault in the middle water layer, because when the middle layer is filled with water, there is thickness, and after tilting, under the influence of gravity pressure, there is still a water layer of a certain thickness on the tilted side, so that the sealing pads 101 on both sides will not fit each other, thereby preventing the upper gas from being backflowed to the lower space during use). Then, the air volume in the upper space is adjusted through the air vents at the upper end of the air vent pipe 103 and the pressure relief pad 1, and then the support strength of the upper space for the patient is adjusted. According to the patient's own body feedback, when it is necessary to increase the support strength of the patient's body, the nursing staff controls the air supply of the air pump 202 to increase the air supply and increase the support strength. When it is necessary to reduce the support strength, the upper gas is squeezed through the air vents by the self-weight of the patient and the bed surface. The through tube 103 is pressed into the airway 104. Since the support sleeve 102 and the air through tube 103 are set as an airtight support in the lower layer, part of the gas is transported to the lower space at this time, and the other most of the gas is discharged in the reverse direction from the air pump machine 202 indirectly connected to the docking joint 201, thereby reducing the support strength. When the support strength is reduced, the gas volume in the upper space is reduced, and the body is made to fit with the middle water layer under the pressure of the patient's own weight. At the same time, the fit between the body and the middle water layer is adjusted by adjusting the small amount of gas support in the upper layer;

[0036] When the patient lies on his side, the local force on the body increases. At this time, the local pressure on the body will be reduced by improving the fit. In order to improve the fit, the amount of gas in the upper space is reduced. When the fit of lying on the side is improved, the water on one side of the middle water layer gathers to the other side under its own weight, and the upper gas gathers to one side under the overall pressure of the patient lying on the nursing pad 5, thereby realizing partial space exchange between the middle water layer and the upper gas space. At this time, the gas gathered on one side of the upper space is used for side support, while reducing the supporting gravity on one side of the bed. Secondly, the middle water layer on the other side improves the fit of the patient's body to prevent excessive local pressure from forming pressure sores.

[0037] At the same time, when the patient is lying flat or lying on his side and the air pump 202 is supplying air for operation, the gas in the lower layer of air will cause the water layer to vibrate when passing through the middle water layer, and then, when the amount of air in the upper space is small, the middle water layer will vibrate against the patient's body, and then the air will surge in the water to simulate the operation state of massaging the patient, thereby improving the comfort of the patient when using it.

[0038] As an embodiment of the present invention, Figures 1 to 4 As shown, a concave decompression groove 6 for placing a body part is provided on the top of the nursing pad 5, an adhesive patch 8 is provided on the top of the decompression pad 1, and an adhesive cotton is provided on the back of the nursing pad 5. The adhesive cotton is bonded with the adhesive patch 8, and the soft strip 7 is bonded with the adhesive patch 8 to adjust the spacing;

[0039] During operation, the adhesive cotton under the nursing pad 5 is fitted with the adhesive patch 8. When the critical pressure parts of patients are different due to their heights, the nursing pad 5 between the soft strips 7 is squeezed and folded to make the decompression groove 6 correspond to the critical pressure parts of the patients, and the nursing pad 5 is fitted on the adhesive patch 8. When the patient lies down, the ridges formed by the pressurized and folded nursing pad 5 between the soft strips 7 support the patient's body, and the pressure on the critical pressure parts is reduced through the decompression groove 6, thereby preventing the occurrence of pressure sores.

[0040] As an embodiment of the present invention, Figure 6 and Figure 7 As shown, an air passage tube 103 is embedded and installed inside the support sleeve 102, and the air passage tube 103 is fixedly fitted with the upper and lower ends of the inner wall of the pressure relief pad 1, and an air passage 104 is provided below the pressure relief pad 1, and the air passage 104 is located at the lower end of the air passage tube 103 and is set through;

[0041] During operation, the air vent tube 103 is connected with the airway 104, so that the airway 104 can transport the gas to the air vent tube 103 for use. At the same time, the upper and middle spaces between the air vent tube 103 and the support sleeve 102 are made of breathable material, and the lower layer is set as an airtight support. When the gas pressure is increased, the support sleeve 102 is expanded to increase the support strength, and when the gas pressure is reduced, the support strength is reduced, thereby increasing the fit between the nursing pad 5 and the patient.

[0042] As an embodiment of the present invention, Figures 1 to 8 As shown, a docking joint 201 is fixedly installed above the mattress board 2, and the docking joint 201 and the mattress board 2 are connected, the docking joint 201 is located on both sides of the airway 104, and the airway 104 is fixedly connected with the mattress board 2 through the docking joint 201, a connecting piece 205 is arranged in the middle of the support pipe 203, and the support pipe 203 is symmetrically arranged with equal length through the connecting piece 205, a connecting pipe 2031 is arranged on the inner side of the connecting piece 205, and the connecting pipe 2031 is connected with the symmetrically arranged support pipe 203, and the air inlet 2021 for gas delivery is symmetrically installed on both sides of the air pump 202;

[0043] During operation, the pressure relief pad 1 is fixedly docked and installed on the pressure relief pad 1 through the docking joint 201, and at the same time, the docking joint 201 is docked with the air duct 104 for air supply. During air supply, the gas is sucked into the air pump 202 through the air inlet 2021, and is transported to the mattress board 2 through the pressurization of the air pump 202. Since the mattress board 2 and the middle support pipe 203 are through-connected, when the air pump 202 transports the gas to the mattress board 2 on one side, the gas is transported to the other side through the support pipe 203 and the connecting pipe 2031 to improve the air supply effect. Secondly, since the connecting piece 205 is arranged in the middle of the support pipe 203, when the mattress board 2 is tilted through the connecting hose 3, the support pipe 203 is tilted synchronously through the connecting piece 205, thereby improving the support effect of the pressure relief pad 1 when it is tilted.

[0044] As an embodiment of the present invention, Figures 1 to 3 As shown, a connecting hose 3 for tilting is provided in the middle of both ends of the mattress board 2, and a supporting cross bar 204 is symmetrically installed on both sides of the connecting hose 3, and the supporting cross bar 204 is fixedly connected to both ends of the mattress board 2;

[0045] During operation, when the inclination of the mattress board 2 is adjusted through the hospital bed, since the connecting hose 3 is made of a soft connecting material, when the inclination is adjusted on the hospital bed through the connecting hose 3, the mattress boards 2 on both sides of the connecting hose 3 are synchronously tilted with the hospital bed, and the synchronous tilting of the mattress board 2 and the hospital bed causes the pressure relief pad 1 to be tilted, so as to change the patient's lying posture to prevent the formation of pressure sores when the patient is lying. Secondly, since the supporting cross bar 204 is arranged below the supporting tube 203, the two sides of the mattress board 2 are connected through the supporting tube 203, and the supporting cross bar 204 connects the two ends of the mattress board 2, so as to support the pressure relief pad 1 for use.

[0046] Working principle: When working, the mattress board 2 is placed on the bed, and the bed is tilted and adjusted to both sides by connecting the hose 3 and the connector 205. Then, the mattress board 2 is supported by the support crossbar 204 and the support pipe 203. The joint 201 is connected to the airway 104 to supply air and install the pressure relief pad 1. When supplying air, the air is pressurized and transported to the mattress board 2 through the air pump 202, and the air is transported to the other side through the support pipe 203 and the connecting pipe 2031 to improve the air supply effect. 104 delivers gas to the air vent tube 103 for use, and at the same time, the air vent tube 103 and the support sleeve 102 are provided with a breathable material in the upper and middle layers, and the lower layer is provided with an airtight support setting. When the patient has different heights and pressure positions, the nursing pad 5 between the soft strips 7 is folded, so that the decompression groove 6 corresponds to the patient's key pressure parts, and the nursing pad 5 is attached to the adhesive patch 8. Then, when the patient lies down, the soft strips 7 support the patient's body, and the decompression grooves 6 reduce the pressure on the key pressure parts to prevent the occurrence of pressure sores;

[0047] When the patient lies flat on the nursing pad 5, the airway 104 supplies air to the air passage 103 and the lower space through the operation of the air pump 202, and then the gas is input into the upper space through the air passage 103, and the air volume in the upper space is adjusted through the air passage 103 and the air holes at the upper end of the pressure relief pad 1, thereby adjusting the support strength of the upper space for the patient. When it is necessary to increase the support strength for the patient's body, the air supply of the air pump 202 is controlled to increase the air supply volume to increase the support strength, and when it is necessary to reduce the support strength, the air supply of the air pump 202 is controlled to increase the air supply volume to increase the support strength. When the patient's weight and the bed surface are pressed, the upper gas is pressed into the airway 104 through the air passage 103. At this time, part of the gas is transported to the lower space, and the other most of the gas is discharged in the reverse direction through the air pump 202 indirectly connected to the docking joint 201, thereby reducing the support strength. When the support strength is reduced, the gas volume in the upper space is reduced, and the body is made to fit with the middle water layer under the pressure of the patient's own weight. At the same time, the fit between the body and the middle water layer is adjusted by adjusting the support volume of the upper gas.

[0048] When the patient lies on his side, the fit with the patient's body is improved to reduce the local pressure on the body, and the fit of lying on the side is improved by reducing the amount of gas in the upper space. The water on one side of the middle water layer gathers to the other side under its own weight, and the upper gas gathers to one side under the overall pressure of the patient lying on the nursing pad 5, thereby realizing partial space exchange between the middle water layer and the upper gas space. At this time, the gas gathered on one side of the upper space is used for side support. Secondly, the middle water layer on the other side improves the fit with the patient's body to prevent local excessive pressure from forming pressure sores. At the same time, when the patient lies flat or on his side and the air pump machine 202 supplies air for air supply operation, when the air volume in the upper space is small, the middle water layer fits the patient's body and vibrates, thereby causing the air to surge in the water to simulate the operating state of massaging the patient, thereby improving the comfort of the patient when using it.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for preventing pressure sores for elderly patients with severe lying conditions, comprising a pressure relief pad (1) and a mattress board (2), characterized in that: Two layers of sealing pads (101) are fixedly mounted in the pressure relief pad (1), and the pressure relief pad (1) forms three spaces through the two layers of sealing pads (101). A plurality of support sleeves (102) are equidistantly mounted in the pressure relief pad (1), and the support sleeves (102) penetrate the two layers of sealing pads (101) and are fixedly mounted on the upper and lower ends of the inner wall of the pressure relief pad (1). A nursing pad (5) is fixedly mounted above the pressure relief pad (1), and soft strips (7) are fixedly mounted on the nursing pad (5), and the soft strips (7) are equidistantly arranged when the nursing pad (5) is unfolded and fitted on the pressure relief pad (1); Support tubes (203) are equidistantly installed in the middle of the mattress board (2), and the support tubes (203) and the mattress board (2) are connected in a through-connection manner; an air pump (202) is fixedly installed on one side of the mattress board (2), and the air pump (202) and the mattress board (2) are connected in a through-connection manner.

2. The device for preventing pressure sores for elderly patients with severe lying conditions according to claim 1 is characterized by: A concave decompression groove (6) for placing a body part is provided on the top of the nursing pad (5), an adhesive patch (8) is provided on the top of the decompression pad (1), and adhesive cotton is provided on the back of the nursing pad (5).

3. The device for preventing pressure sores for nursing of seriously ill elderly patients according to claim 2 is characterized by: The adhesive cotton and the adhesive patch (8) are arranged in a bonded manner, and the soft strip (7) is arranged with an adjustable spacing through the bonding of the adhesive cotton and the adhesive patch (8).

4. The device for preventing pressure sores for nursing of seriously ill elderly patients according to claim 1 is characterized by: An air vent (103) is embedded in the support sleeve (102), and the air vent (103) is fixedly fitted to the upper and lower ends of the inner wall of the pressure relief pad (1). An air passage (104) is provided below the pressure relief pad (1), and the air passage (104) is located at the lower end of the air vent (103) and is arranged to pass through.

5. The device for preventing pressure sores for nursing of seriously ill elderly patients according to claim 4 is characterized by: A docking joint (201) is fixedly installed above the mattress board (2), and the docking joint (201) and the mattress board (2) are arranged to be connected, the docking joint (201) is located on both sides of the airway (104), and the airway (104) is fixedly connected to the mattress board (2) by means of the docking joint (201).

6. The device for preventing pressure sores for nursing of seriously ill elderly patients according to claim 1 is characterized by: A connecting piece (205) is arranged in the middle of the support tube (203), and the support tube (203) is symmetrically arranged to be of equal length and movable through the connecting piece (205). A connecting tube (2031) is arranged on the inner side of the connecting piece (205), and the connecting tube (2031) and the symmetrically arranged support tube (203) are connected in a through-connection arrangement.

7. The device for preventing pressure sores for nursing of seriously ill elderly patients according to claim 1 is characterized by: Air inlets (2021) for gas delivery are symmetrically installed on both sides of the air pump machine (202), and a sealing port (4) is provided on one side of the pressure relief pad (1), and the sealing port (4) is located in the middle layer of the three spaces formed by the sealing pad (101).

8. The device for preventing pressure sores for nursing of seriously ill elderly patients according to claim 1 is characterized by: A connecting hose (3) for tilting is provided in the middle of both ends of the mattress board (2), and supporting cross bars (204) are symmetrically installed on both sides of the connecting hose (3), and the supporting cross bars (204) are fixedly connected to both ends of the mattress board (2).

9. The device for preventing pressure sores for nursing of seriously ill elderly patients according to claim 4 is characterized by: The pressure relief pad (1) is provided with ventilation holes at both ends, the air vent pipe (103) is fixedly attached to and connected with the upper end of the pressure relief pad (1) through the ventilation holes, and the airway (104) is connected with the lower space through the ventilation holes. The two layers of the sealing pads (101) are made of air-permeable and water-tight polymer materials.

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