FIELD OF THE INVENTION

[0001] The present invention relates to the precise pressure adjustment of adjustable air cell structures. More specifically, the invention relates to a method according to the preamble of claim 1, a device according to the preamble of claim 12 and a system according to the preamble of claim 15.

BACKGROUND

[0002] Such adjustable bases, for example seat cushions, are typically used in wheelchairs. In most cases, the adjustment of such a seat cushion is done, for example, manually by an occupational therapist without any measuring device. This is laborious and precision demanding. The success of the adjustment depends entirely on the professional skills and experience of the person adjusting the seat cushion. Repeating a correct adjustment is also very difficult.

[0003] Such adjustable bases, for example seat cushions, can also be adjusted by means of a manual pressure gauge equipped with a bellows. The problems in this case are, for example, the manual pumping required to increase the air pressure, which requires hand strength and is time-consuming, and the fact that the correct operating pressure for the seat cushion is not defined. Again, the success of the adjustment depends entirely on the professional skills and experience of the person adjusting the seat cushion. Also in this case, repeating a correct adjustment is very difficult.

[0004] In prior art solutions, the internal pressure of the air cell structure of a seat cushion can also be changed or varied by means of a control unit or panel fixedly attached to the cell structure. The pressure adjustment device according to the present invention is, however, not a fixed one, but is instead disconnected from the air cell structure after completion of the adjustment.

[0005] Prior art solutions include, for example, seat cushions having an air cell structure, the effectiveness of which in preventing and treating pressure ulcers has generally been evaluated as good when correctly adjusted according to the user. These solutions, however, suffer from the persistent incorrect adjustments due to the reasons described above, in which case the seat cushion no longer functions for its intended purpose.

[0006] It is an object of the present invention to solve at least some of the problems of the prior art and to provide an improved method and device for adjusting the pressure of an air cell product, such as a seat cushion.

SUMMARY OF THE INVENTION

[0007] The invention is characterized by what is stated in the characterizing part of the independent claims.

[0008] According to one aspect of the invention, there is provided a method of adjusting the pressure of an air cell structure with a hand-held adjustment device, the method comprising: introducing the adjustment device into the vicinity of a wireless module specific for the air cell structure, establishing a wireless communication link between a wireless reader device of the adjustment device and the wireless module specific for the air cell structure, reading the parameters specific for the air cell structure via the wireless communication link from the wireless module specific for the air cell structure, connecting the adjustment device to a pressure connection of the air cell structure by means of a pressure hose, adjusting the pressure of the air cell structure on the basis of said parameters specific for the air cell structure, disconnecting the adjustment device from the pressure connection. [0009] Embodiments of the first aspect may comprise at least one feature from the following list:

• The adjustment device has an integrated pressure hose and an integrated hose outlet at the adjustment device end of the pressure hose.

• The wireless module is integrated in the structure of the air cell structure.

• The wireless reader is a NFC reader and the wireless module is a NFC module.

• The parameters specific for the air cell structure comprise a pressure setpoint.

• Adjustment of the air cell structure comprises: pre-filling the air cell structure to a first pressure value, loading the air cell structure with the mass of the user of the air cell structure, filling the air cell structure during loading to a second pressure value; wherein said parameters specific for the air cell structure comprise at least said second pressure value.

• At the loading stage, the user of the air cell structure sits or lies on the air cell structure.

• The air cell structure is any one of the following: a seat cushion, part of a seat cushion, a sleeping pad, part of a sleeping pad; the air cell structure comprises at least one air cell, preferably a plurality of air cells; each air cell has its own pressure connection for connecting the adjustment device; said parameters specific for the air cell structure comprise the specific parameters for each air cell; and the adjustment device connecting step, pressure adjustment step and the adjustment device disconnecting step are performed individually for each air cell.

• The pressures of two separate air cell structures are adjusted by means of said hand held adjustment device, in which method: the adjustment device is brought into the vicinity of a wireless module specific for the first air cell structure, a wireless communication link is established between the wireless reader of the adjustment device and said wireless module specific for the first air cell structure, the parameters specific for the first air cell structure are read via the wireless communication link from said wireless module specific for the first air cell structure, the adjustment device is connected to the pressure connection of the first air cell structure by means of the pressure hose and valves, the pressure of the first air cell structure is adjusted based on said parameters specific for the first air cell structure, the adjustment device is disconnected from the pressure connection of the first air cell structure; the adjustment device is brought into the vicinity of a wireless module specific for the second air cell structure, a wireless communication link is established between the wireless reader of the adjustment device and said wireless module specific for the second air cell structure, the parameters specific for the second air cell structure are read via the wireless communication link from said wireless module specific for the second air cell structure, the adjustment device is connected to the pressure connection of the second air cell structure by means of the pressure hose and valves, the pressure of the second air cell structure is adjusted based on said parameters specific for the second air cell stmcture, the adjustment device is disconnected from the pressure connection of the second air cell structure.

[0010] According to a second aspect of the invention, there is provided a device for adjusting the pressure of at least one air cell in an air cell structure, the device comprising: a pressure hose with a non-return valve counter member at one end for connecting the device releasably to the non-return valve of the air cell, a pressure sensor for measuring the pressure in the air cell connected to the pressure hose, a pump for pumping air through the pressure hose into the air cell connected to the pressure hose, a wireless reader adapted to provide a wireless communication link between the device and the wireless module specific for the air cell structure for transferring the parameters specific for the air cell structure from the wireless module to the memory of the device, a control system for controlling the pump and the pressure sensor based on said parameters specific for the air cell structure during said adjustment of said at least one air cell.

[0011] Embodiments of the second aspect may comprise at least one feature from the following list:

• The wireless reader and the module specific for the air cell structure utilize NFC technology.

• The operating distance of said wireless communication link is 50 mm.

[0012] According to the third aspect of the invention, there is provided a system comprising a device according to the second aspect and at least one air cell structure, in which system the air cell structure is any one of the following: a seat cushion, part of a seat cushion, a sleeping pad, part of a sleeping pad; and the air cell structure is adapted to be adjusted by means of the method according to the first aspect.

[0013] Embodiments of the third aspect may comprise at least one feature from the following list:

• The system comprises a device according to the second aspect and at least two

separate air cell structures; in which system: each air cell structure is independently any one of the following: a seat cushion, part of a seat cushion, a sleeping pad, part of a sleeping pad; and each air cell structure is adapted to be adjusted by means of the method according to the first aspect by using the same device for adjusting said at least one air cell of each air cell structure.

[0014] The invention enables the adjustment of different air cell structures in a flexible and versatile manner with the same hand-held adjustment device. The advantages of the invention are user-friendliness, versatility, accuracy and reproducibility of adjustment: the same adjustment device and user interface can be used in connection with different air cell products and operating situations.

[0015] By means of the invention, the function, structure and location of an air cell product can be designed more freely, because the adjustment device is not integrated in the air cell product but can instead be attached to the product with a pressure hose only for the time of pressure measurement, adjustment and inspection.

[0016] The invention improves the reliability of pressure adjustment in all environments where an air cell stmcture is precisely adjusted, for example according to the person on the seat cushion, or when several different air cell structures are being adjusted or when the pressure of one air cell structure needs to be adjusted repeatedly for different users or different operating situations.

[0017] By means of the invention, it is possible to improve the accuracy and reproducibility of pressure adjustment of an air cell structure.

BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the following, some embodiments of the invention will be described in more detail with reference to the accompanying drawings, in which:

FIGURE 1 shows an adjustment device according to at least one embodiment;

FIGURE 2 shows the front panel of an adjustment device according to at least one embodiment;

FIGURE 3 shows the display of an adjustment device according to at least one embodiment;

FIGURES 4A to 4C show adjustment devices according to some embodiments. EMBODIMENTS

[0019] The present invention can be used in connection with various application products having an air cell structure, examples of which include a seat cushion, a sleeping pad, a mattress, a mattress topper, an air cell structure, an air cell or the like. A preferred application product is a seat cushion.

[0020] In this context, the term "air cell product" refers to an application product comprising an air cell structure. The air cell product may also consist of an air cell structure.

[0021] In this context, the term "air cell structure" refers to a sealed air reservoir having a cellular structure. An air cell structure may include one or more separately inflatable air cells. The term“air cell” refers to an air reservoir having its own pressure connection for adding air into the cell and removing air from the cell. An air cell may have any shape.

[0022] The air cell has a pressure connection, which is preferably a non-return valve.

[0023] An air cell structure is typically made of a flexible material. Preferably, the material of an air cell structure is a totally gas-tight material or is coated with a gas-tight film. Preferably, the material of an air cell structure is a thermoplastic film material.

[0024] The material of an air cell structure may be selected from the following: neoprene, thermoplastic polyurethane film, ethylene vinyl acetate (EVA) or latex.

[0025] In use, the air cell product is beneath the user, for example the patient, so that the user is in a sitting or supine position.

[0026] The present invention provides a novel method and device for adjusting the pressure of an air cell structure. Preferably, the device is attached to the air cell product only during the adjustment and/or identification of the need for adjustment. Retrieval of information specific for the air cell structure, such as data on suitable settings, takes place in a preferred embodiment by utilizing a wireless communication link between the air cell product and the adjustment device.

[0027] In a preferred embodiment, the invention comprises a wireless module specific for the air cell structure, including parameters specific for the air cell structure, and an adjustment device having a wireless reader. The wireless module and the reader form a communication link by means of which the parameters specific for the air cell structure are read to the adjustment device. The parameters specific for the air cell structure being adjusted are thus available in a separate module and there is no need to permanently store specific parameters in the adjustment device itself, which allows the same adjustment device to be used for many different air cell structures, each of which can have different parameters.

[0028] In some embodiments, the information specific for the air cell structure is stored in a wireless module that is either integrated into the air cell structure or is separate from the air cell structure but located in connection therewith.

[0029] In a preferred embodiment, any air cell structure, such as that of a mattress or a seat cushion can be adjusted, and the pre-optimized parameters essential and necessary for the adjustment of the air cell structure can be activated in the adjustment situation from the wireless module. Maintaining and determining the correct pressure value and pressure settings do not depend on the memory or software of the adjustment device, these pressure setpoints being instead maintained and stored outside the adjustment device, for example in the air cell structure itself or in an associated wireless module that is readable with the adjustment device.

[0030] Adjusting the pressure of the air cell structure results indirectly in the adjustment of the hardness of the air cell structure. The higher the pressure, the harder the user of the air cell structure, for example the patient, feels the air cell structure. On the other hand, the higher the pressure, the better is the body support.

[0031] In a preferred embodiment, the air cell structure is structurally tight enough to keep the volume of inflated air inside for several weeks in a closed state. Preferably, each air cell in the air cell structure has a pressure connection with a non-return valve, i.e. a counterflow valve.

[0032] In one embodiment, the air cell structure has only one cell having one pressure connection with a non-return valve.

[0033] In another embodiment, the air cell structure has a plurality of cells, each having its own pressure connection for pressure adjustment. [0034] In one embodiment, the size of the air cell structure is relatively small, for example 50 to 200 liters, preferably at most 150 liters. The length of the air cell structure may be, for example, 30 to 150 cm. The width of the air cell structure may be, for example, 30 to 100 cm. The thickness of the air cell structure may be, for example, 5 to 15 cm.

[0035] In a highly preferred embodiment, the adjustable air cell product has only one adjustable air cell.

[0036] In one embodiment, the air cell product is a sleeping pad and air cells are present in only a portion of the sleeping pad, for example, in the portion that comes under the user's feet. Other parts of the sleeping pad may be, for example, foamed plastic or other corresponding material.

[0037] In one embodiment, the air cell product is a thin Tollable sleeping pad having one adjustable air cell.

[0038] One preferred air cell product is an ambulance mattress having air cells. The ambulance mattress can be used especially for transportations involving long transfers. In an ambulance, flawless use of an adjustment device that is permanently attached to the mattress and constantly adjusting it is not possible, as continuous adjustment of the mattress may fail due to swaying and turning of the car. In this embodiment, the power supply of the adjustment device is preferably a battery or accumulator, in which case no mains connection is required. The ambulance mattress may be stored empty in its own carrying case, which saves space.

[0039] The method according to an embodiment of the invention is described in outline below. The method utilizes NFC data transmission.

[0040] The adjustment device is connected to the air cell structure via the pressure connection. The adjustment device has a pressure hose and a valve for this purpose. The air cell structure has a corresponding, compatible valve. Preferably, the air cell structure is prefilled so that the user does not touch the bottom while sitting or lying on top of the air cell structure. The user of the air cell structure then sits down or lies on top of the air cell structure and the pressure in the air cell structure is adjusted to the desired pressure value.

[0041] If the adjustment device has not previously been used with the presently adjusted air cell structure, the user establishes a NFC connection between the adjustment device and the NFC tag corresponding to the air cell structure that is adjusted by moving the adjustment device close enough to said NFC tag. The NFC tag may be attached to or separate from the air cell structure. The NFC tag is preferably specific for the air cell structure or type in question. The adjustment device may have a dedicated button for establishing the NFC connection.

[0042] In one embodiment, the NFC tags are assembled into a separate collection, such as a sticker collection.

[0043] In a preferred embodiment, the adjustment device reads from the NFC tag data required for the adjustment of the air cell structure, for example a pressure setpoint, which is preferably such that the value to be adjusted is optimal for the air cell product in question and determined by means of clinical research or development. In finding and optimizing the pressure setpoint specific for the air cell structure it is possible, depending on the air cell structure, to very broadly take into account the conditions such as the structure of the air cell structure, the operating environment and/or the user group. The result will be the parameters or parameter specific for the air cell structure, in particular the pressure setpoint, which are stored into the wireless module to be retrievable in the adjustment situation by the adjustment device via the wireless connection.

[0044] The last used setpoint or a certain number of recently used setpoints can be stored in the memory of the adjustment device in order to be reused quickly without having to reread the NFC tag.

[0045] After reading the data, pressure adjustment functions suitable for the air cell structure in question may be selected from the adjustment device. The user of the adjustment device selects one function and activates it, after which the device performs the desired adjustment.

[0046] If the desired pressure value is not reached, the device may indicate an error, for example in a number field of the LCD display of the adjustment device and/or by an audible signal from an internal buzzer.

[0047] When the desired pressure value has been reached, the user disconnects the adjustment device from the air cell structure. The valve of the air cell structure is adapted to close the air cell tightly when the pressure hose is disconnected. [0048] The structure of the adjustment device according to an embodiment of the invention is described below.

[0049] In a preferred embodiment, the adjustment device is hand-held in size and mode of operation during pressure adjustment and/or measurement.

[0050] The adjustment device preferably has means, for example a wireless NFC reader, for establishing a wireless NFC connection and for reading control information from the NFC tag corresponding to the air cell structure. Instead of NFC technology, other wireless communication technologies may also be used.

[0051] In a preferred embodiment, the adjustment device has means for receiving and/or transmitting data via the wireless communication link. Wireless communication technology can be selected from the following: NFC, RFID, ZigBee, Wi-Fi, WLAN, Bluetooth, NB-IoT, CAT-M, Loran, 2G, 3G, 4G, 5G. NFC and Bluetooth are preferred.

[0052] Preferably, the operating distance of the wireless communication link is 200 mm, even more preferably 50 mm, for example 40 mm. The advantage of a short operating distance, for example less than 50 mm, is that the adjustment device does not accidentally detect a wrong wireless module.

[0053] The adjustment device has a pressure sensor for measuring the pressure in the air cell structure. Pressure adjustment may involve only measuring the pressure without changing it.

[0054] The adjustment device has a display and buttons. The user may read the pressure value and other information relevant to the pressure adjustment on the display. The adjustment device is preferably battery-powered or accumulator-powered.

[0055] In a preferred embodiment, the main components of the adjustment device are a pressure sensor, an air pump, a solenoid valve system and a permanently installed air hose (pressure hose) with a non-retum valve counter member at the end, i.e. a connector to be coupled with the non-retum valve of the air cell structure. The display is preferably an LCD display.

[0056] The pump output of the adjustment device is preferably 1 to 5 L/min, for example 2 to 3 L/min, preferably about 2.5 L/min. [0057] The filling time of the air cell structure with continuous pumping is preferably 50 to 150 minutes, for example up to 120 minutes.

[0058] The wireless communication link between the adjustment device and the wireless module specific for the air cell structure may be, for example, an NFC or a Bluetooth connection (for example a BT4/BT5 interface). The communication link may be used to transfer data between the wireless module specific for the air cell product and the adjustment device.

[0059] The adjustment device may have an acceleration sensor, by means of which the device is activated by the effect of movement, i.e. when the adjustment device is picked up.

[0060] In one embodiment, the pressure of the air cell structure may be adjusted via the following parameters:

- The pressure of the air cell structure may be adjusted to the pressure value specific for the air cell structure in question, i.e. to the so-called pressure setpoint N.

- The pressure of the air cell structure may be changed from the setpoint N with the buttons (+ and -) on the adjustment device by certain steps of pressure change either up or down.

- The maximum number of pressure change steps upwards or downwards from the setpoint may be defined.

- The minimum and maximum pressure of the air cell structure may be defined either in absolute terms or via the above-mentioned parameters (setpoint, magnitude of the pressure change step, and maximum number of pressure change steps).

[0061] The following may be used as additional parameters:

- information on the type of air cell product, i.e. whether the air cell product is, for example, a scat cushion or a sleeping pad, the filling time and evacuation time associated with pressure setpoint N, adjustment cycles. [0062] Exemplary parameters for various air cell products are described below. Preferably, these parameters are retrieved from a wireless module, for example an NFC module.

[0063] Parameters for an air cell structure having a single adjustable cell:

- pressure setpoint = 15 mmHg,

- pressure step +/- 1 mmHg,

- maximum number of pressure steps 10,

- minimum pressure 5 mmHg, maximum pressure 25 mmHg [0064] Parameters suitable for a seat cushion:

- pressure setpoint = 35 mmHg

- pressure step +/- 2 mmHg

- maximum number of pressure steps 10

- minimum pressure 15 mmHg, maximum pressure 55 mmHg [0065] Parameters suitable for a freely adjustable air cell structure:

- pressure setpoint: not defined

- pressure step: not defined

- maximum number of pressure steps: not defined

- minimum pressure 0 mmHg, maximum pressure 55 mmHg

[0066] In the freely adjustable variant, the pressure setpoint, pressure step and the maximum number of pressure steps are not defined. The minimum pressure is 0 mmHg and the maximum pressure 55 mmHg. Accordingly, the user of the air cell structure is able to freely set the pressure between 0 and 55 mmHg.

[0067] In a preferred embodiment, NFC technology is used for wireless data transmission. The NFC tag may contain information describing the structure, purpose, and/or user of the air cell structure. The NFC tag may contactlessly readably include one or more of the following, in any combination: pressure setpoint (N); magnitude of pressure step; maximum number of pressure steps; minimum pressure; maximum pressure; active/deactivated buttons; filling time to setpoint N; evacuation time from setpoint N; adjustment cycles; type of air cell product; model of air cell product; indication to be treated; user age; user weight; the user's position on the air cell product.

[0068] The user's weight, body structure and position on the platform typically affect the optimal adjustment value, in particular the pressure setpoint, which is preferably determined by means of separate clinical research or product development work. Preferably, the effect of the user's characteristics and position is taken into account in determining the parameters specific for the air cell structure, which parameters after the determination are stored in the wireless module.

[0069] FIGURE 1 shows an exemplary adjustment device 10 comprising a display

13, buttons 14, a pressure hose 11 and a non-return valve counter member 12 for attachment to the non-return valve of the air cell structure.

[0070] FIGURE 2 shows an exemplary adjustment device with“+”, “Normal” and“Memo” buttons. The display shows the pressure of the air cell structure connected to the adjustment device in mmHg units.

[0071] FIGURE 3 shows the display panel of an exemplary the adjustment device.

[0072] FIGURE 4A shows an exemplary adjustment device with“+”, “Normal”,

”NFC”, storage and lock buttons.

[0073] FIGURE 4B shows an exemplary adjustment device with“+”, “Normal”,

”NFC”, storage and lock buttons. Pressure setpoint, selected by using the’’Normal” button, is intended for an air cell product on which the user is lying.

[0074] FIGURE 4C shows an exemplary adjustment device with“+”, “Normal”,

”NFC”, storage and lock buttons. Pressure setpoint, selected by using the’’Normal” button, is intended for an air cell product on which the user is sitting.

[0075] In adjustment devices 2 and 4A to 4C, adjustment of pressure of the air cell to a setpoint specific for the cell is carried out by pressing the’’Normal” button. [0076] In adjustment devices 4A to 4C, retrieval of settings specific for the air cell from the wireless module takes place by pressing the”NFC” button in the vicinity of the module in question.

[0077] Example

[0078] An example of carrying out the method of the present invention is described below.

[0079] By activating the LCD display, the adjustment device indicates that it is running. The adjustment device displays on the LCD the last setpoint, which may differ from the normal setpoint. The adjustment device constantly monitors the battery voltage and gives an indication if the batteries need to be replaced.

[0080] The user connects the adjustable air cell structure to the adjustment device. The user pre-fills the air cell structure. The user of the adjustment device then makes sure that the user of the air cell structure, who may be the user of the adjustment device, sits or lies on the application product during the adjustment.

[0081] If the adjustment device has not been used with the adjustable air cell structure in question before, the user presses the NFC button on the adjustment device and moves the adjustment device close to the NFC tag of the air cell structure. Said NFC tag may be affixed to the air cell structure or may be located in a separate NFC tag collection (. e.g . a book or file containing, in addition to the tags, a list and/or images of adjustable air cell products and their identification). The adjustment device reads the information (adjustment parameters) required for the adjustment of said air cell structure from the NFC tag. The adjustment parameters are stored in the memory of the adjustment device and are valid until a new tag is read.

[0082] In a preferred embodiment the pressure setpoint (N or Normal) is specific for the air cell product.

[0083] The user selects the desired adjustment function by pressing the buttons on the adjustment device. A function is possible if the button in question is activated in the control data received from the NFC tag. The following functions are achieved with the buttons on the adjustment device: - Pressing the“N” button automatically adjusts the pressure to the pressure setpoint read from the NFC tag ( e.g . variant“sleeping pad” = 15 mmHg, variant“seat cushion” = 35 mmHg);

Pressing the“+” button increases the pressure with a specified pressure step from the set pressure. The new (higher) pressure value is displayed. The pressure may be increased by pressing the“+” button repeatedly until the predetermined maximum pressure value is reached.

- Pressing the button decreases the pressure with a specified pressure step from the set pressure. The new (lower) pressure value is displayed. The pressure may be decreased by pressing the“+” button repeatedly until the predetermined minimum pressure value is reached.

[0084] By pressing the “MEMO” button when the desired pressure value is displayed, the adjustment device adjusts the air cell structure to this pressure value. At the same time, this pressure value is stored in the memory of the adjustment device as a new setpoint pressure value. The setpoint pressure value in the memory may be restored to the original setpoint pressure value by pressing the“N” button.

[0085] If, for one reason or another, it is not possible to adjust the pressure to a certain pressure value according to a command given by the user, the adjustment device indicates an error in the numeric field of the LCD display with an error code and an audible signal with an internal buzzer.

[0086] When the desired pressure value is reached and the pressure adjustment completed, the user disconnects the pressure hose of the adjustment device from the air cell structure. Preferably, the adjustment device is disconnected from the air cell structure for the time between the adjustment operations.

[0087] If the adjustment device is disconnected from the air cell structure and no button has been pressed for a predetermined period of time, the adjustment device switches itself off.

[0088] The present invention can be used for pressure adjustment of air-cushioned pillows and mattresses in hospitals, nursing homes, home nursing, ambulances and medical centres, for example. The present invention is also applicable to home use such that the user of the air-cushioned pillow or mattress structure performs the pressure adjustment her/him self.

[0089] In one embodiment, the user of the pillow or mattress performs the pressure adjustment her/himself. The user may use the same adjustment device himself/herself to adjust the pressure of several different pillows and/or mattresses he/she uses in each use situation.

[0090] In another embodiment, the pressure adjustment is performed by a person other than the user of the pillow or mattress, for example a person belonging to the medical staff. Using the same adjustment device, a person in the care staff may easily adjust the air- cushioned pillows and mattresses being used by different patients in different rooms.

[0091] Preferred application products include air-cushioned seat cushions of different sizes for people of different weight and form, air-cushioned mattress toppers with a small size of the air cell structure, and hybrid mattresses having a thin air cell structure as adjustment element.

[0092] One preferred application is adaptation of seat cushions of different sizes for different users of seat cushions by an occupational therapist in an aids and appliances unit or in a rehabilitation facility. The advantage is that optimal adjustment can be achieved for each user.

[0093] One preferred application is the optimal adjustment of similar air-cushioned mattress toppers or similar hybrid mattresses, by a nurse in an inpatient setting, such as a hospital or nursing home, according to different patients.

INDUSTRIAL APPLICABILITY

[0094] The present invention is industrially applicable at least in regulating the pressure of air cell structures of sleeping pads and seat cushions the structure of which comprises an air cell structure.

LIST OF ABBREVIATIONS

NFC Near Field Communication EVA ethylene vinyl acetate

LIST OF REFERENCE NUMBERS

10 adjustment device

11 pressure hose

12 non-return valve counter member

13 display

14 button