WO2007054660A1 - An inflatable mattress that provides precise multi functional support to a physically disabled person - Google Patents

An inflatable mattress that provides precise multi functional support to a physically disabled person Download PDF

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Publication number
WO2007054660A1
WO2007054660A1 PCT/GB2006/002178 GB2006002178W WO2007054660A1 WO 2007054660 A1 WO2007054660 A1 WO 2007054660A1 GB 2006002178 W GB2006002178 W GB 2006002178W WO 2007054660 A1 WO2007054660 A1 WO 2007054660A1
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WO
WIPO (PCT)
Prior art keywords
mattress according
air
base
cells
assembly
Prior art date
Application number
PCT/GB2006/002178
Other languages
French (fr)
Inventor
Jack Rostron
Original Assignee
Jack Rostron
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jack Rostron filed Critical Jack Rostron
Publication of WO2007054660A1 publication Critical patent/WO2007054660A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/05—Parts, details or accessories of beds
    • A61G7/057—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor
    • A61G7/05769—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor with inflatable chambers
    • A61G7/05776—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor with inflatable chambers with at least two groups of alternately inflated chambers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/001—Beds specially adapted for nursing; Devices for lifting patients or disabled persons with means for turning-over the patient
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/05—Parts, details or accessories of beds
    • A61G7/057—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor
    • A61G7/05769—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor with inflatable chambers

Definitions

  • the invention is a pneumatic mattress that provides precise multi functional support to a physically disabled person. It will create a topographically variable bearing surface for the patient's body. It may be pre-programmed or via self control to facilitate; firstly, a patient to secure any idiosyncratic positjon desired; secondly, allows any changes in idiosyncratic position in terms of desired timescale, and thirdly, facilitates such therapeutic regimes as rotation therapy, Fowler positions, alternating therapy (to prevent/treat decubitus ulcers) etc.
  • An embodiment of the current invention can perform the above described traditional treatment regimes. However because of the relatively small size of the cells which inflate and deflate at variable speeds and pressure, combined with the selective control of individual or groups of cells, a high degree of precision can be achieved to meet each patients unique requirements.. Page 2/24
  • Figure 1 shows multi cell architecture - the entire mattress with 72 cells and base inflated.
  • Figure 2 shows the single cell architecture.
  • Figure 3 shows a structural cross section.
  • Figure 4 shows components dimensioned - air cell upper.
  • Figure 5 shows order of assembly - conventions.
  • Figure 6 shows order of assembly - air cell.
  • Figure 7 shows components - base membrane.
  • Figure 8 shows order of assembly - base cell.
  • Figure 9 shows layout - air cells.
  • Figure 10 shows air feed components
  • Figure 11 shows air feed assembly
  • Figure 12 shows air feed base
  • Figure 13 shows air feed full base.
  • the invention is a slim, elegant and lightweight air cushioned therapeutic structure.
  • the mattress consists of 72 individual air cells. It has a common inflatable base that supports the 72 individual air cells.
  • the base embodiment contains 72 individual flexible cavities, each being aligned to the air cell it supports.
  • the invention contains no hard or sharp protrusions, ensuring patient comfort at all times.
  • Each top mounted air cell has a discrete air feed.
  • the base has a discrete air feed.
  • the embodiment will be secured by straps attached to each side of the base unit and run underneath the bed frame.
  • the invention In its uninflated mode the invention will be approximately 6 to 8 mm thick.
  • base element that comprises of an upper base membrane and lower base membrane that envelope 72 base cells.
  • the base On inflation the base will provide a turgid and comfortable platform for the air cells to rise from and fall to.
  • the base inflation is independent from the air cells inflation. ( figurei "Multi Cell Architecture").
  • the base cells provide support for the air cells that are mounted directly and concentrically above each base cell.
  • Each air cell can be inflated from its resting position of flat against the base to its maximum height by introducing low pressure air to the air cell.
  • Each cell consists of two sub assemblies, the first "Air cell” which sits above the base upper membrane, the second “Base cell” which sits between the upper and lower membranes of the base cell, (figure 2 "Single Cell Architecture”).
  • the air cell comprises of three bellows and the base cell comprises of 1 bellow.
  • the gusseting provides two functions, the first is to provide stability during inflation and when under full inflation, the second is to provide tension to naturally deflate the cell. :
  • the cell bellows are constructed from 0.55 mm thick natural latex rubber or other material with similar properties.
  • the gussets are constructed from 0.35 mm thick natural latex rubber or other material with similar properties.
  • the base upper and lower membranes are constructed from 0.55 mm thick natural latex rubber or other material with similar properties.
  • Each cell consists of two sub assemblies, the first "Air cell” which sits above the base upper membrane, the second “Base cell” which sits between the upper and lower membranes of the base, (figure 2 "Single Cell Architecture”).
  • the air cell can be understood as the sub-assembly that sits above and on the upper membrane of the base. Component and dimension information can be found in (figure 4 "Components Dimensioned Air Cell Upper”).
  • the air cell consists of three bellows and three sets of gussets.
  • Upper bellow consists of membrane A bonded to membrane B.
  • Lower bellow consists of membrane C bonded to membrane C.
  • Each gusseting set comprises of four similar gussets, whose placement is at 45, 135, 225 and 315 degrees running corner to centre.
  • each bellow is bonded, prior to bellows being bonded to the remaining bellows.
  • the base consists of an upper membrane and a lower membrane sealed around its perimeter along a 5 mm strip. Enclosed within the upper and lower membrane are 72 base cells, which are concentrically positioned in relation to its corresponding air cell.
  • the upper membrane has 72 circular holes of 20 mm diameter at 150 mm centres (figure 7 "Components Base Membrane”).
  • the lower membrane has 72 circular holes of 02 mm diameter at 150mm centres, these are concentric with the upper membrane. Page 5/24
  • the base cell comprises of a single bellow, being membrane C bonded to membrane C.
  • gusset B It has a set of four internal gussets, being gusset B.
  • the upper set of external gussets are bonded at the lower face of the upper base membrane and the upper face of the bellow.
  • the lower set of external gussets are bonded at the lower face of the bellow and the upper face of the lower base membrane. All gusseting set at 45, 135, 225 and 315 degrees, running corner to centre.
  • Each air feed is composed of 0.55mm latex rubber sheeting, it provides a dedicated air way to an individual cell.
  • Each air feed sheet functionally replicates twelve individual pipes from the foot end of the bed to each of the cells within a twelve cell column. See (figure 10 "Air feed Components").
  • Each separate channel is produced by forming a void using the bonding method to create a sealed track on the lower surface of the base lower membrane.
  • the void encapsulates the 02mm diameter hole and takes an unobstructed route back to the foot end of the base.
  • Each channel has an internal width of 04mm and offers O ⁇ mm separation between itself and the adjacent channel.
  • the channels of the integrated air feed distribution system being formed using a bonding method creating sealed tracks defining said channels, has the effect of reducing the weight and size of the mattress which can facilitate storage and portability of the mattress and can also increase the reliability of the mattress and reduce the costs of manufacture.
  • the controller which is computer based can be programmed to perform standard therapies such as lateral rotation, alternating therapy, Fowler positions or indeed any desired position dynamically.
  • controller operable to facilitate turning/lateral rotation of a patient by means of inflating and deflating cells
  • inflation and deflation of the cells is precisely controlled to body weight and the individual patient's requirements. This inflation and deflation of the cells may be to effect full body length turning/rotation, or may be to effect only partial body turning/rotation.
  • the controller may be operable to vary air pressure levels in each cell to respond to individual patient requirements in terms of specific parts of the body which can aid in improving comfort levels, providing pain relief, and improving the success of prescribed therapies.

Abstract

A multi functional inflatable mattress designed to be placed over a conventional bed. It consists of cells, which can be programmed to inflate and deflate selectively. The inflation and deflation of the cells in a pre-determined pattern will assist the physically disabled person to turn and receive a range of treatments/therapies unaided by a carer or nurse. There are 72 cells which are controlled and act independently. They are mounted on a permanently inflated chassis. The device is designed to be fitted over an existing standard mattress or bed frame in the home or hospital. The cells will rise and fall milimetrically and can be programmed to facilitate 'standard' therapeutic regimes such as rotation and alternating therapy and Fowler positions or the particular idiosyncratic needs of an individual patient. The embodiment allows for self control by the patient.

Description

Page 1/24 TITLE
1.1 An inflatable mattress that provides precise multi functional support to a physically disabled person
PATENT SPECIFICATION
2.1 The invention is a pneumatic mattress that provides precise multi functional support to a physically disabled person. It will create a topographically variable bearing surface for the patient's body. It may be pre-programmed or via self control to facilitate; firstly, a patient to secure any idiosyncratic positjon desired; secondly, allows any changes in idiosyncratic position in terms of desired timescale, and thirdly, facilitates such therapeutic regimes as rotation therapy, Fowler positions, alternating therapy (to prevent/treat decubitus ulcers) etc.
2.2 Traditional mattresses have the problem that patient's can relatively quickly develop degradation of tissue resulting in bed sores (decubitus ulcers). This occurs most frequently when the patient cannot exercise. Palliative measures such as massage applied locally offer some relief, but is labour intensive and often not very successful in the longer term.
2.3 There are existing pneumatic mattresses that help in pressure relief. Such devices generally allow only a single therapy such as alternating therapy, by alternatively inflating and deflating juxta positioned chambers, which assist with the treatment/prevention of bed sores (decubitus ulcers).
2.4 Similarly, there exist mattresses which facilitate the rotation laterally of a patient, usually by the inflation and deflation of bellows either side of the lateral centre line of the mattress. Such devices however do not facilitate multi functioning or precise targeting of the desired therapy.
2.5 However, the nature of disablement in terms of variable functional ability, pain distribution/severity and the idiosyncratic comfort requirements of patients require a dynamic bearing surface that matches the unique requirements of each patient's individual needs.
2.6 An embodiment of the current invention can perform the above described traditional treatment regimes. However because of the relatively small size of the cells which inflate and deflate at variable speeds and pressure, combined with the selective control of individual or groups of cells, a high degree of precision can be achieved to meet each patients unique requirements.. Page 2/24
2.7 The invention will now be described solely by way of example and with reference to the accompanying drawings in which.
Figure 1 shows multi cell architecture - the entire mattress with 72 cells and base inflated.
Figure 2 shows the single cell architecture.
Figure 3 shows a structural cross section.
Figure 4 shows components dimensioned - air cell upper.
Figure 5 shows order of assembly - conventions.
Figure 6 shows order of assembly - air cell.
Figure 7 shows components - base membrane.
Figure 8 shows order of assembly - base cell.
Figure 9 shows layout - air cells.
Figure 10 shows air feed components.
Figure 11 shows air feed assembly.
Figure 12 shows air feed base.
Figure 13 shows air feed full base.
Functional Description
2.8 The invention is a slim, elegant and lightweight air cushioned therapeutic structure.
2.9 It fits atop of an existing hospital or domestic bed with or without an existing traditional mattress in place..
2.10 The mattress consists of 72 individual air cells. It has a common inflatable base that supports the 72 individual air cells.
2.11 The base embodiment contains 72 individual flexible cavities, each being aligned to the air cell it supports.
2.12 The invention contains no hard or sharp protrusions, ensuring patient comfort at all times.
2.13 Each top mounted air cell has a discrete air feed.
2.14 The base has a discrete air feed.
2.15 The invention will normally be used in conjunction with traditional side rails fixed to the bed to prevent the patient falling out. Page 3/24
2.16 The embodiment will be secured by straps attached to each side of the base unit and run underneath the bed frame.
Description
2.17 In its uninflated mode the invention will be approximately 6 to 8 mm thick.
2.18 Looking at it from the side it will present a base element that comprises of an upper base membrane and lower base membrane that envelope 72 base cells.
2.19 On inflation the base will provide a turgid and comfortable platform for the air cells to rise from and fall to. The base inflation is independent from the air cells inflation. ( figurei "Multi Cell Architecture").
2.20 The base cells provide support for the air cells that are mounted directly and concentrically above each base cell.
2.21 They also add a significant level of stability to the base, ensuring that the base upper and lower membrane retain their location to each other.
2.22 The air cells which are mounted to the upper base membrane, provide precise support and accurately target therapeutic/comfort manipulation to the patient.
2.23 Each air cell can be inflated from its resting position of flat against the base to its maximum height by introducing low pressure air to the air cell.
Single Cell Specification
2.24 Each cell consists of two sub assemblies, the first "Air cell" which sits above the base upper membrane, the second "Base cell" which sits between the upper and lower membranes of the base cell, (figure 2 "Single Cell Architecture").
2.25 The air cell comprises of three bellows and the base cell comprises of 1 bellow.
2.26 As can be seen in the previous diagram each bellow is connected to its adjacent bellow by a gusset, further detail is shown in (figure 3 "Structural Cross Section")
2.27 The gusseting provides two functions, the first is to provide stability during inflation and when under full inflation, the second is to provide tension to naturally deflate the cell. :
2.28 The cell bellows are constructed from 0.55 mm thick natural latex rubber or other material with similar properties. The gussets are constructed from 0.35 mm thick natural latex rubber or other material with similar properties. The base upper and lower membranes are constructed from 0.55 mm thick natural latex rubber or other material with similar properties. Page 4/24
Air Cell Construction
2.29 Each cell consists of two sub assemblies, the first "Air cell" which sits above the base upper membrane, the second "Base cell" which sits between the upper and lower membranes of the base, (figure 2 "Single Cell Architecture").
2.30 The air cell can be understood as the sub-assembly that sits above and on the upper membrane of the base. Component and dimension information can be found in (figure 4 "Components Dimensioned Air Cell Upper").
2.31 The air cell consists of three bellows and three sets of gussets.
2.31.1 Upper bellow consists of membrane A bonded to membrane B.
2.31.2 Mid bellow consists of membrane C bonded to membrane C.
2.31.3 Lower bellow consists of membrane C bonded to membrane C.
2.32 Each gusseting set comprises of four similar gussets, whose placement is at 45, 135, 225 and 315 degrees running corner to centre.
2.32.1 Upper bellow to mid bellow use gusset A.
2.32.2 Mid bellow to lower bellow use gusset B.
2.32.3 Lower bellow to upper membrane of base use gusset C.
2.33 Bonding of bellows and gussets is positioned within a 5mm strip on boundary of component. :
2.34 Order of construction is illustrated in (figure 6 "Order of Assembly - Air Cell").
2.35 Key can be found at (figure 5 "Order of Assembly - Conventions").
2.36 As can be seen in figure 6 each bellow is bonded, prior to bellows being bonded to the remaining bellows.
2.37 The gussets are attached after bellow stack is complete. Base Specification
2.38 The base consists of an upper membrane and a lower membrane sealed around its perimeter along a 5 mm strip. Enclosed within the upper and lower membrane are 72 base cells, which are concentrically positioned in relation to its corresponding air cell.
2.39 The upper membrane has 72 circular holes of 20 mm diameter at 150 mm centres (figure 7 "Components Base Membrane").
2.40 The lower membrane has 72 circular holes of 02 mm diameter at 150mm centres, these are concentric with the upper membrane. Page 5/24
2.41 Their relative position and relationship to their corresponding air cell and base cell can be seen at (figure 3 "Structural Cross Section").
2.41.1 The base cell comprises of a single bellow, being membrane C bonded to membrane C.
2.41.2 It has a set of four internal gussets, being gusset B.
2.41.3 It has two sets of four external gussets, being gusset C. Base Construction
2.42 Initially the internal gussets are bonded to the upper surface of membrane C. Then the internal gussets are bonded to the lower surface of membrane C. Next the two membranes are bonded at their perimeter to form a bellow with internal gusseting.
2.43 The next operation is attaching the base cell bellow to the upper and tower membrane of the base.
2.44 The upper set of external gussets are bonded at the lower face of the upper base membrane and the upper face of the bellow. The lower set of external gussets are bonded at the lower face of the bellow and the upper face of the lower base membrane. All gusseting set at 45, 135, 225 and 315 degrees, running corner to centre.
2.45 Order of construction can be seen at (figure 8 "Order of Assembly - Base Cell").
2.46 An overview of the base can be found at (figure 9 "Layout Air Cells").. This illustrates the relative positions of the air cells, base cells and base.
Air feed Specification
2.47 There are six air feeds, which run the length of the base being aligned at the east end or foot end of the bed, it is at this point that the air feeds interface with the air supply.
2.48 Each air feed is composed of 0.55mm latex rubber sheeting, it provides a dedicated air way to an individual cell.
2.49 Each air feed sheet functionally replicates twelve individual pipes from the foot end of the bed to each of the cells within a twelve cell column. See (figure 10 "Air feed Components").
Air feed Construction
2.50 The air feed provides dedicated air flow to twelve cells by replicating twelve separate pipes. It does this by nature of its construction, which can be seen at (figure 11 "Air feed Assembly"). Page 6/24
2.51 Each separate channel is produced by forming a void using the bonding method to create a sealed track on the lower surface of the base lower membrane.
2.52 The void encapsulates the 02mm diameter hole and takes an unobstructed route back to the foot end of the base.
2.53 Each channel has an internal width of 04mm and offers Oβmm separation between itself and the adjacent channel.
2.54 For a view of a complete base embodiment with its air feeds see (figure 12 "Air feed Full Base 01").
2.55 For a comprehensive illustration of the air feeds relative to the base and the cells see (figure 13 "Air feed Full Base").
2.56 The channels of the integrated air feed distribution system being formed using a bonding method creating sealed tracks defining said channels, has the effect of reducing the weight and size of the mattress which can facilitate storage and portability of the mattress and can also increase the reliability of the mattress and reduce the costs of manufacture.
Command and Control
2.57 The objectives of the command and control system, which will be via a hand held unit, are;
2.57.1 To create variable inflation and deflation of each air cell individually.
2.57.2 To create variable inflation or deflation at selective speed and pressure level according to weight and patients condition.
2.57.3 The air source is a small silent pump integrated with the controller.
2.57.4 The controller which is computer based can be programmed to perform standard therapies such as lateral rotation, alternating therapy, Fowler positions or indeed any desired position dynamically.
2.57.5 It can facilitate idiosyncratic support topographies to meet individual patient requirements.
2.57.6 Via memory based sensors the desired pressure in each cell can be varied to meet individual patients requirements, Page 7/24
2.58 Where the controller is operable to facilitate turning/lateral rotation of a patient by means of inflating and deflating cells, inflation and deflation of the cells is precisely controlled to body weight and the individual patient's requirements. This inflation and deflation of the cells may be to effect full body length turning/rotation, or may be to effect only partial body turning/rotation.
2.59 The controller may be operable to vary air pressure levels in each cell to respond to individual patient requirements in terms of specific parts of the body which can aid in improving comfort levels, providing pain relief, and improving the success of prescribed therapies.

Claims

Page 8/24CLAIMS
1. An inflatable mattress comprising: an inflatable base element; and a plurality of individual inflatable air cell assemblies each air cell assembly comprising a base cell sub-assembly and an air cell sub-assembly, wherein the base cell sub- assemblies of each air cell assembly are enclosed within said base element with said air-cell sub-assemblies mounted above the respective base cell sub- assembly, thereby providing support for said respective air-cell sub-assembly.
2. A mattress according to claim 1 , wherein the air cell sub-assemblies are mounted directly and concentrically above each base cell sub-assembly.
3. A mattress according to any of claims 1 or 2, wherein each air cell sub- assembly comprises a number of connected bellows.
4. A mattress according to. claim 3 wherein each bellow is connected to the adjacent bellow by gusseting.
5. A mattress according to claim 4, wherein the gusseting is arranged to provide stability during inflation and tension for deflation.
6. A mattress according to any one of claims 1-5, wherein the base cell sub-assemblies each comprise a single bellow.
7. A mattress according to claim 6, wherein the bellow is connected to the base element by gusseting.
8. A mattress according to any one of claims 1-7, wherein the base element comprises upper and lower base membranes sealed together at their peripheries.
9. A mattress according to claim 8 when dependent upon claim 7, wherein the gusseting is connected to the upper and lower base membranes.
10. A mattress according to any one of claims 8 or 9, wherein the base lower membrane comprises an integrated air feed system.
11. A mattress according to claim 10 wherein the air feed system comprises separate channels. Page 9/24
12. A mattress according to claim 11, wherein each air cell sub-assembly has a dedicated channel, so as to be inflatable independently of any other air cell sub- assembly.
13. A mattress according to any one of claims 10-12, wherein each base cell sub-assembly has a discrete air feed.
14. A mattress according to any one of claims 10-13, wherein the mattress is inflatable using a pump connected to said air feeds.
15. A mattress according to claim 14, wherein the pump comprises a controller operable to execute of a range of inflation and deflation arrangements.
16. A mattress according to any one of claims 1-15, wherein said air cell assemblies each target an area of around 150mm x 150mm.
17. A mattress according to any one of claims 1-15 that can be placed atop a conventional mattress.
18. A mattress according to claim 15, wherein the controller is operable to facilitate turning/lateral rotation of a patient by means of inflating and deflating cells.
19. A mattress according to claim 18, wherein inflation and deflation of the cells is precisely controlled to body weight and the individual patient's requirements.
20. A mattress according to any one of claims 19 or 20, wherein only certain cells for chosen parts of a patient's body are inflated and deflated selectively.
21. A mattress according to claim 15, wherein the controller is operable to automatically inflate and deflate selected cells to achieve a pre-programmed range of therapeutic regimes including any of: Fowler positions, negative blood pressure positions.
22. A mattress according to claim 15, wherein the controller is operable to assist in the treatment of decubitus ulcers by alternating inflation and deflation of selected cells, for the whole or desired parts of a patient's body.
23. A mattress according to any one of claims 15-20, wherein the controller is operable to memorise and produce the inflation and deflation of selective cells automatically to meet an individual patient's movement/turning pattern over time. Page 10/24
24. A mattress according to any one of claims 15-21 wherein the controller is operable to vary air pressure levels in each cell to respond to individual patient requirements in terms of specific parts of the body.
25. An inflatable mattress according to claims 1-13 comprising: a command and control system with an integrated pump; and memory based sensors controlling the desired pressure for the individual air cells, wherein the system controls inflation and deflation of each air cell individually at selective speeds, and is operable to perform standard therapies and can facilitate idiosyncratic requirements to meet patient's unique requirements.
26. A mattress according to claim 10 wherein the channels of said integrated air feed distribution system are formed using a bonding method creating sealed tracks defining said channels.
PCT/GB2006/002178 2005-11-14 2006-06-14 An inflatable mattress that provides precise multi functional support to a physically disabled person WO2007054660A1 (en)

Applications Claiming Priority (2)

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GB0523131A GB2432114B (en) 2005-11-14 2005-11-14 An inflatable mattress
GB0523131.1 2005-11-14

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CN114948499A (en) * 2021-02-25 2022-08-30 雃博股份有限公司 Air bag device and air cushion bed system thereof
EP4049642A1 (en) * 2021-02-25 2022-08-31 Wellell Inc. Air cell device and air mattress system thereof
CN114948499B (en) * 2021-02-25 2024-02-02 雃博股份有限公司 Airbag device and air cushion bed system thereof

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