Anti-pressure sore mattress

Abstract

The utility model relates to a kind of pressure sore prevention mattress, including the mattress base and body with upper and lower through hole, the mattress is provided annular hollow air column, it is connected to realize periodic expansion and contraction by closed air charging loop and air charging and discharging pump, and the top protrudes mattress surface to form discrete support point when expanding;The air column is provided with central hole and lateral opening, and closed air flow loop is formed by bottom airflow connection channel series connection, and active type moisture removal is realized in cooperation with turbine fan;4-8 TPU support ribs are arranged inside column to prevent collapse, and V-shaped flow guide groove is designed on surface to enhance ventilation effect.The device reduces the pressure of bony prominence, improves air permeability, and the moisture removal efficiency is much higher than traditional mattress, effectively preventing pressure sores.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an anti-pressure ulcer mattress. Background Technology

[0002] Pressure ulcers are skin ulcers that form due to prolonged pressure, shearing force, or friction on the skin tissue (especially bony prominences), leading to local ischemia and hypoxia. They are common in the elderly and patients of all ages who are bedridden and unable to adjust their position independently.

[0003] Because prolonged bed rest can cause pressure on local tissues, leading to skin damage and pressure sores, medical or nursing facilities typically place patients on air mattresses to prevent these issues. Currently, the widely used anti-pressure sore air mattresses in the medical field primarily alter body pressure distribution through alternating inflation. However, they have significant drawbacks: traditional products are often made of low-permeability materials such as rubber, TPU, or PVC. To improve durability, a polyurethane waterproof coating is commonly added, reducing breathability to below 50-80 CFM (cubic feet per minute). This closed structure cannot effectively address the problem of skin moisture caused by sweating and incontinence in bedridden patients, and a moist environment can increase the risk of skin maceration by 3-5 times.

[0004] In existing technologies, such as the inflatable mattress with automatic turning function for pressure ulcer prevention disclosed in CN119424123A, although it achieves alternating airbag support for turning, it suffers from the following technical bottlenecks: the airbag unit has a continuous planar structure, which still forms a large contact area when inflated, resulting in limited local pressure dispersion; it lacks an active moisture-wicking system, relying solely on the breathability of the material itself, leading to poor efficiency in removing moisture. Therefore, there is an urgent need to develop a pressure ulcer prevention mattress that combines dynamic pressure regulation and efficient moisture management to solve the problems of excessively large support contact area and poor moisture wicking effect in existing technologies. Utility Model Content

[0005] This invention provides a pressure ulcer prevention mattress that is easy to use and has moisture-wicking properties.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A pressure ulcer prevention mattress includes a mattress base and a mattress body disposed on the mattress base. The mattress base has a plurality of downward through holes evenly distributed on its surface. The mattress body has a plurality of upward through holes evenly distributed on its surface, and the upward through holes are coaxially corresponding to the downward through holes. The mattress also includes:

[0008] An inflatable column has its bottom fixed in the lower through hole and its top extendable through the upper through hole. Adjacent inflatable columns are connected in series through inflation pipes to form a closed inflation circuit.

[0009] An inflation / deflation pump, connected to the inflation pipe located at the end, is used to control the expansion and contraction of the inflation column; when the inflation column expands, its top protrudes 10-30mm above the surface of the mattress body.

[0010] The inflatable column is an annular hollow structure with a central hole, its bottom is a closed design, and its sidewall has at least one lateral opening.

[0011] An airflow connection channel is located below the mattress base, with its two ends connected to the lateral openings of adjacent air columns. Adjacent central holes are connected in series through the airflow connection channel and the lateral openings to form a closed airflow channel.

[0012] A turbine fan is fixed to the bottom side of the mattress base, and its air outlet is connected to the airflow connection channel.

[0013] Preferably, the inflatable column has a support rib in the central hole, the support rib is arranged to avoid the lateral opening, and the support rib extends upward from the bottom of the central hole to the middle of the inflatable column.

[0014] Preferably, the support ribs are made of thermoplastic polyurethane, and the number of support ribs is 4-8.

[0015] Preferably, the upper surface of the inflatable column has several recesses distributed radially, the recesses being V-shaped grooves with a depth of 1-3 mm, and 4-8 grooves evenly distributed radially.

[0016] Preferably, the diameter of the upper through hole and the lower through hole is 20-35mm.

[0017] Preferably, the bottom of the inflatable column is bonded with a column base plate made of glass fiber reinforced nylon material; a fixed base plate is provided below the mattress base, and the fixed base plate has a shallow groove corresponding to each position of the inflatable column, the shallow groove engaging with the column base plate.

[0018] Preferably, both the column base plate and the fixed base plate are provided with threaded holes, and the two are connected by screws.

[0019] Preferably, the mattress body is divided into an upper unit, a middle unit, and a lower unit along its length, corresponding to the shoulder and neck area, the waist and hip area, and the lower limb area, respectively; each unit is equipped with an independent closed inflation circuit and a closed airflow channel, and each unit is equipped with an independent inflation and deflation pump and a turbine fan, and the inflation circuit and airflow channel of each unit are not connected to each other.

[0020] The above-mentioned technical solution of this utility model has the following beneficial effects:

[0021] This novel pressure ulcer prevention mattress features an inflatable column whose diameter expands to 1.2-1.5 times its contracted state when inflated, with the top protruding 10-30mm from the mattress surface, forming discrete support points. This reduces the skin contact area, preventing pressure ulcers caused by prolonged continuous skin contact with traditional mattresses. The inflatable column can generate pressure changes through periodic inflation and deflation, such as every 5-15 minutes, increasing blood flow and promoting blood circulation.

[0022] This utility model anti-pressure ulcer mattress has a central hole in the inflatable column that is connected to a turbine fan through a side opening, enabling rapid moisture removal and drying of the skin; when the inflatable column expands, its V-shaped structure forms a flow channel to ventilate and dry the surrounding skin. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the pressure ulcer prevention mattress of this utility model;

[0024] Figure 2 This is a side view of the anti-pressure sore mattress of this utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the inflatable column of this utility model;

[0026] Figure 4 This is a schematic diagram illustrating one embodiment of the airflow channel and inflation pipe layout for the pressure ulcer prevention mattress of this utility model. Detailed Implementation

[0027] This utility model of an anti-pressure ulcer mattress includes a mattress base and a main body with upper and lower through holes. The mattress features a ring-shaped array of hollow inflatable columns, which are connected to an inflation / deflation pump via a closed inflation circuit to achieve periodic expansion and contraction. During expansion, the top protrudes from the mattress surface, forming discrete support points and reducing the contact area. Each inflatable column has a central hole and side openings, connected in series through a bottom airflow channel to form a closed airflow circuit, which, in conjunction with a turbine fan, achieves active dehumidification. In some improvements, the columns are equipped with 4-8 TPU support ribs to prevent collapse, and the surface is designed with V-shaped guide grooves to enhance ventilation. Another improvement to this anti-pressure ulcer mattress is the use of a three-unit independent airflow system to achieve zoned pressure regulation for the shoulders, neck, waist, hips, and lower limbs.

[0028] The embodiments of the pressure ulcer prevention mattress of this utility model will be described in detail below with reference to the accompanying drawings and examples.

[0029] Please see Figure 1-3As shown, this utility model discloses an anti-pressure ulcer mattress, including a mattress base 1 and a mattress body 2 disposed on the mattress base 1. The mattress base 1 has a plurality of lower through holes 10 evenly distributed; the mattress body 2 has a plurality of upper through holes 20 evenly distributed on its surface. The upper through holes 20 and the lower through holes 10 are coaxially corresponding, that is, each upper through hole 20 corresponds to one lower through hole 10, forming a complete through hole with the upper and lower parts coaxially aligned. The anti-pressure ulcer mattress also includes an air column 3, an air pipe 31, an air pump 4, an airflow connection channel 34, and a turbine fan 5.

[0030] The bottom of the inflatable column 3 is fixed inside the lower through hole 10, and the top can extend through the upper through hole 20. Adjacent inflatable columns 3 are connected in series through inflation pipes 31 to form a closed inflation circuit. According to this technical solution, it can be understood that each adjacent inflatable column 3 in the same row is provided with an inflation pipe 31, and inflatable columns 3 in different rows can be connected through inflatable columns 3 on the same side edge to form a series structure.

[0031] The inflation / deflation pump 4 is connected to the inflation pipe 31 located at the end, and is used to control the expansion and contraction of the inflation column 3. When the inflation column 3 expands, its top protrudes 10-30mm above the surface of the mattress body 2; when the inflation column 3 contracts, its top is not exposed above the surface of the mattress body 2. The diameter of the inflation column after expansion is 1.2-1.5 times that of the contracted state; for example, if the outer diameter of the inflation column 3 is 20mm and the height is 50mm in the contracted state, then its outer diameter in the expanded state is 30mm and the height is 70mm. In specific implementation, the specific parameters can be set according to the actual situation; the above limitations are only preferred options.

[0032] The inflatable column 3 is an annular hollow structure with a central hole 32. Its bottom is closed and its sidewall has at least one lateral opening 33. That is, the central hole 32 is open at the top and closed at the bottom, and the side is connected to the lateral opening 33.

[0033] The airflow connection channel 34 is located below the mattress base 1, and its two ends are connected to the side openings 33 of the adjacent air columns 3, so that the center holes 32 of the adjacent air columns 3 are connected. The adjacent center holes 32 are connected in series by the airflow connection channel 34 and the side openings 33 to form a closed airflow channel; its overall airflow channel route can be the same as the air inflation pipeline route, such as... Figure 2 As shown, the airflow channel and the inflation pipe are two channels arranged one above the other. The connection between the two is in series, i.e., a serpentine wiring pattern.

[0034] The turbine fan 5 is fixed to the bottom side of the mattress base 1, and its air outlet is connected to the airflow connection channel 34 to allow air to pass through the airflow channel.

[0035] Figure 3 As shown, a support rib 35 is provided in the central hole 32 of the inflatable column 3. The support rib 35 is positioned away from the lateral opening 33 and extends upward from the bottom of the central hole 32 to the middle of the inflatable column 3. The support rib 35 is made of thermoplastic polyurethane, and there are 4-8 support ribs 35. The support rib 35 has an anti-collapse function, extending 10-30mm from the bottom of the central hole to below the top (when the inflatable column 3 is in the inflated state); at the same time, the support rib also enhances the compressive strength of the inflatable column 3.

[0036] The upper surface of the inflatable column 3 has several recesses 36 distributed radially. Each recess 36 is a V-shaped groove with a depth of 1-3 mm, and 4-8 grooves are evenly distributed radially. The groove width is set according to the size of the inflatable column 3, preferably 2-5 mm.

[0037] In one example, the diameters of the upper through-hole 20 and the lower through-hole 10 are 20-35 mm. The size of the inflatable column 3 ensures that it does not compress against the upper and lower through-holes when inflated.

[0038] The bottom of the inflatable column 3 is bonded with a column base plate 37 made of glass fiber reinforced nylon material; a fixed base plate 15 is provided below the mattress base 1, and the fixed base plate 15 can be fixed to the mattress base 1 by mounting plate screws on both sides, such as... Figure 2 As shown, the fixed base plate 15 has shallow grooves 17 corresponding to each of the inflatable columns 3, and the shallow grooves 17 engage with the column base plate 37. To further securely fix the inflatable columns 3, both the column base plate 37 and the fixed base plate 15 have threaded holes, and the two are connected by screws 19. The glass fiber reinforced nylon column base plate engages with the shallow grooves of the fixed base plate and is further secured by screws, giving it good shock resistance and anti-loosening effect.

[0039] It should be noted that the specific number and arrangement of the upper and lower through holes are set according to requirements. Based on the above design principles, the mattress can be controlled and managed using one or more inflation / deflation pumps and a turbine fan. To better allow for independent operation of different parts of the body, the mattress body can be divided into three units, such as... Figure 4 As shown, the upper unit covers the area from the neck and shoulders to the thoracic spine (top 1 / 3 of the mattress); the middle unit covers the area from the lumbar spine to the ischial tuberosities (middle 1 / 3); and the lower unit supports the area from the thighs to the heels (bottom 1 / 3). Each unit is equipped with a fully enclosed independent air circuit, and each unit has its own independent inflation / deflation pump and turbine fan, achieving precise zone control through a completely independent three-unit system. The control system uses a main control board to coordinate the working modes of each unit (CAN bus communication), ensuring that each unit operates independently without interference, providing fault isolation, and allowing for more precise adjustments.

[0040] When using, start the inflation / deflation pump, press the "Inflation" mode button (or use the remote control), observe the inflation column expand synchronously, adjust the pressure until the top of the column protrudes from the bed surface; turn on the turbine fan, rotate the fan speed knob to the appropriate speed, and confirm that there is a continuous breeze in the airflow channel.

[0041] The above-described embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A pressure ulcer-preventing mattress comprising a mattress base and a mattress body provided on the mattress base, characterized in that, The mattress base has multiple lower through holes evenly distributed; the mattress body surface has multiple upper through holes evenly distributed, the upper through holes being coaxially corresponding to the lower through holes; and further includes: An inflatable column has its bottom fixed in the lower through hole and its top extendable through the upper through hole. Adjacent inflatable columns are connected in series through inflation pipes to form a closed inflation circuit. An inflation / deflation pump, connected to the inflation pipe located at the end, is used to control the expansion and contraction of the inflation column; when the inflation column expands, its top protrudes 10-30mm above the surface of the mattress body. The inflatable column is an annular hollow structure with a central hole, its bottom is a closed design, and its sidewall has at least one lateral opening. An airflow connection channel is located below the mattress base, with its two ends connected to the lateral openings of adjacent air columns. Adjacent central holes are connected in series through the airflow connection channel and the lateral openings to form a closed airflow channel. A turbine fan is fixed to the bottom side of the mattress base, and its air outlet is connected to the airflow connection channel.

2. The pressure ulcer prevention mattress of claim 1, wherein, The inflatable column has a support rib inside its central hole. The support rib is positioned away from the lateral opening and extends upward from the bottom of the central hole to the middle of the inflatable column.

3. The pressure ulcer prevention mattress as described in claim 2, characterized in that, The support ribs are made of thermoplastic polyurethane, and the number of support ribs is 4-8.

4. The anti-pressure ulcer mattress according to claim 1, characterized in that, The upper surface of the inflatable column has several recesses distributed radially. The recesses are V-shaped grooves with a depth of 1-3 mm and 4-8 grooves evenly distributed radially.

5. The anti-pressure ulcer mattress according to claim 1, wherein The diameter of the upper and lower through holes is 20-35mm.

6. The anti-pressure ulcer mattress according to claim 1, wherein The bottom of the inflatable column is bonded with a column base plate made of glass fiber reinforced nylon material; a fixed base plate is provided under the mattress base, and the fixed base plate has a shallow groove corresponding to the position of each inflatable column, and the shallow groove is engaged with the column base plate.

7. The anti-pressure ulcer mattress according to claim 6, characterized in that Both the column base plate and the fixed base plate are provided with threaded holes, and the two are connected by screws.

8. The anti-pressure ulcer mattress according to claim 1, characterized in that, The mattress body is divided into an upper unit, a middle unit, and a lower unit along its length, corresponding to the shoulder and neck area, the waist and hip area, and the lower limb area, respectively. Each unit has an independent closed inflation circuit and a closed airflow channel, and each unit is equipped with an independent inflation and deflation pump and a turbine fan. The inflation circuit and airflow channel of each unit are not connected to each other.

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