EP1031338B1 - Druckwechselkissen für Rollstühle und Matratzen - Google Patents

Druckwechselkissen für Rollstühle und Matratzen Download PDF

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Publication number
EP1031338B1
EP1031338B1 EP00300684A EP00300684A EP1031338B1 EP 1031338 B1 EP1031338 B1 EP 1031338B1 EP 00300684 A EP00300684 A EP 00300684A EP 00300684 A EP00300684 A EP 00300684A EP 1031338 B1 EP1031338 B1 EP 1031338B1
Authority
EP
European Patent Office
Prior art keywords
pad
cells
intermediate cell
outer cells
fingers
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP00300684A
Other languages
English (en)
French (fr)
Other versions
EP1031338B8 (de
EP1031338A2 (de
EP1031338A3 (de
Inventor
Peter Charles Stacy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KCI Licensing Inc
Original Assignee
KCI Medical Ltd
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 KCI Medical Ltd filed Critical KCI Medical Ltd
Publication of EP1031338A2 publication Critical patent/EP1031338A2/de
Publication of EP1031338A3 publication Critical patent/EP1031338A3/de
Application granted granted Critical
Publication of EP1031338B1 publication Critical patent/EP1031338B1/de
Publication of EP1031338B8 publication Critical patent/EP1031338B8/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1043—Cushions specially adapted for wheelchairs
    • A61G5/1045—Cushions specially adapted for wheelchairs for the seat portion

Definitions

  • This invention relates to an alternating pressure pad for use by sedentary patients, e.g. bed-ridden patients.
  • Such pads may take various forms including chairs, wheel chairs, mattresses and beds.
  • the invention will be described with reference to use in a standard chair or wheel chair.
  • Alternating pressure mattresses or pads are commonly used as an aid in prevention and treatment of pressure sores. These pads may, for example, have two separate air cells (or sets of cells) that alternately inflate and deflate. The variation in interface pressure between the patients skin and the mattress encourages blood circulation which tends to reduce the incidence of pressure sores.
  • longitudinal cylindrical cells are normally used in 2 sets of 2 cells. If the pad is used as a chair cushion, the patient is supported on cells 1 and 3 during the first half cycle end on cells 2 and 4 in the second half. When the cells 2 and 4 inflate the patient tends to tip to one side. When cells 1 and 3 inflate the patient is tipped to the other side.
  • a second design has transverse cylindrical cells which are normally used as a nine alternate cell arrangement (1 set of 4 cells and 1 set of 5 cells). In a chair cushion it is essential that the patient is properly supported at the front edge of the pad to prevent the patient sliding forward. The transverse cell arrangement periodically deflates the front cell and allows the patient to gradually slide forward.
  • an H section cell arrangement incorporates a surrounding cell.
  • the patient experiences very noticeable changes during the cycle. Additionally the patient is not secure when the H section is inflated because the full width of the pad is not inflated.
  • an alternating pressure pad system which comprises first and second outer cells and an intermediate cell therebetween; said intermediate cell comprising a longitudinal tube and a plurality of transversely extending portions connected pneumatically to said longitudinal tube and a plurality of slots between said portions, and said outer cells each comprising a longitudinal tube connected pneumatically to a plurality of transversely extending fingers.
  • the outer cells are flexibly connected to the intermediate cell so that on folding the outer cells inwardly, fingers of the outer cells can be inserted into slots of the intermediate cell, whereby fingers of the outer cells are interspersed with transversely extending portions of the intermediate cell.
  • the intermediate and outer cells are associated with an air pump and control apparatus for inflating and deflating the intermediate cell while alternating one or both outer cells.
  • the pump and control apparatus includes an indexing rotary valve.
  • the alternating pressure pad comprises an intermediate cell 2 and outer cells 3 and 4 made from an impermeable material, preferably comprising polyurethane.
  • the cells 2, 3 and 4 each incorporate inflation tubes 6, 7 and 8. Tubes 6, 7 and 8 are associated with a pump and control apparatus so that cells 2, 3 and 4 may be inflated or deflated as described hereinafter.
  • a suitable rotary control valve is shown in Figure 5. Any air pump of appropriate capacity may be employed, e.g. a diaphragm pump or an axial or centrifugal blower to provide a source of pressurised air.
  • Intermediate cell 2 comprises a longitudinal portion 22 and a plurality of transversely extending portions 24 connected pneumatically thereto by welding the edges of two suitably shaped sheets of flexible material. Between said portions 24 are associated gaps or slots 26.
  • Outer cells 3 and 4 are connected to intermediate cell by a web 10.
  • the web 10 is made of a flexible plastic material such that cells 3 and 4 can fold over transversely extending portions 24 of the intermediate cell as shown in Figure 4.
  • Cells 3 and 4 both comprise longitudinal portions 33 and 44, connected pneumatically to a plurality of transversely extending fingers 36 and 46 respectively. Fingers 36 and 46 each have a closed end.
  • Figure 4 shows cells 2, 3 and 4 interlocking to form the pad ready for use. This is performed by folding the outward cells inwardly from web 10 and inserting the ends of fingers 36 and 46 into slots 26 of the intermediate cell. In the case of the outermost fingers 36,46, they may extend beneath corresponding outermost portions 24 of the intermediate cell. These ends of fingers 36 and 46 are held in place by abutting the back portion of longitudinal portion 22 of the intermediate cell. The cells are now interspersed in a staggered arrangement as depicted in Figure 4.
  • longitudinal tubes 33 and 44 represent first and second sides of the pad with longitudinal tube 22 of the intermediate cell therebetween.
  • Inflation tubes 6, 7 and 8 are connected to a pump and control apparatus.
  • the pump and control apparatus includes an indexing rotary valve as shown in Figure 5 and described in our co-pending GB Application No. 9927891.3 and PCT/GB99/03937.
  • the valve member includes an aperture 12 for admission of pressurised air from a pump.
  • the pump is not shown in the drawing, but would be connected to an air inlet 14 in one side of the body member.
  • the planar surface 11 incorporates two diametrically opposed apertures 15 and 16, which are connected to outlet ports 18 and 19.
  • Outlet port 18 is connected to inflation tubes 6 and 8 and outlet port 9 connected to inflation tube 7.
  • Index Point Cell 2 Cells 3 and 4 1 Fill Fill 2 Fill Hold inflated 3 Fill Exhaust 4 Fill Hold deflated 5 Fill Fill 6 Hold inflated Fill 7 Exhaust Fill 8 Hold deflated Fill
  • the pad is used, e.g. as a wheelchair cushion with the portions 24,36 extending across the user's buttocks. It may now be seen that the cells inflate in a staggered arrangement. When cell 2 is inflated and cells 3 and 4 deflated, the user is supported by the transversely extending portions 24 and longitudinal cell 22 of the intermediate cell 2. When cells 3 and 4 are inflated and cell 2 deflated, the user is supported on the transversely extending fingers 36, 46 and longitudinal tubes 33, 44 of the outer cells 3 and 4. This ensures that the full width of the front and rear end of the pad are never totally deflated. This helps to prevent the user sliding forwards and backwards. Due to the fact that the shapes of the supporting area of the cell 2 are similar to cells 3 and 4, the user is more secure as there is no tendency to tip to one side.
  • each of the outer cells 3 and 4 carry long flexible straps 50 extending outwardly and also short flexible straps 51 extending inwardly.
  • the long straps 50 are passed through slots 53 in a sheet of closed cellular foam flexible or firm foamed plastics or rubber material (Figure 5a depicts a sheet of foam material in plain view). The long straps are then fastened to the short straps beneath the plastics foam. This provides a simple means of maintaining the pad in its folded position.
  • the pad is preferably made from a weldable sheet material such as polyurethane or a polyurethane-coated fabric, e.g. of woven nylon or polyester. It may be desirable to manufacture the pad from a breathable fabric, e.g. fabrics sold under the trade mark "Gortex".
  • a weldable sheet material such as polyurethane or a polyurethane-coated fabric, e.g. of woven nylon or polyester. It may be desirable to manufacture the pad from a breathable fabric, e.g. fabrics sold under the trade mark "Gortex".
  • the pad may be enclosed within a cover.
  • the cover may be formed of a wear-resistant, moisture-impervious material, typically an easily cleaned plastics or composite material.
  • the cover may be anchored to a chair or wheel chair by means of straps, Velcro, clips or the like.
  • the pad may be used in a variety of forms such as mattresses and beds, as well as chairs and wheelchairs.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Nursing (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Invalid Beds And Related Equipment (AREA)

Claims (8)

  1. Aufblasbares Druckkissen, umfassend eine erste und eine zweite äußere Zelle (3, 4), wobei die äußeren Zellen jeweils einen Längsschlauch (33, 34) umfassen, welcher pneumatisch mit einer Mehrzahl von in Querrichtung verlaufenden Fingern (36, 46) verbunden ist, dadurch gekennzeichnet, dass das aufblasbare Druckkissen ferner eine dazwischen angeordnete Zwischenzelle (2) umfasst; wobei die Zwischenzelle einen Längsabschnitt (22) und eine Mehrzahl von in Querrichtung verlaufenden Abschnitten (24) umfasst, welche pneumatisch mit dem Längsabschnitt verbunden sind, sowie dadurch, dass wenigstens einige der Finger (36, 46) zwischen benachbarten in Querrichtung verlaufenden Abschnitten (24) der Zwischenzelle (2) verlaufen können.
  2. Kissen nach Anspruch 1, bei welchem wenigstens einer der Finger (36, 46) der äußeren Zellen (3, 4) mit einem Spalt zwischen benachbarten in Querrichtung verlaufenden Abschnitten der Zwischenzelle ausgerichtet ist.
  3. Kissen nach Anspruch 2, bei welchem die äußeren Zellen (3, 4) derart faltbar mit der Zwischenzelle (2) verbunden sind, dass beim Falten der äußeren Zellen nach innen Finger (36, 46) der äußeren Zellen in entsprechende Spalte (26) der Zwischenzelle eingefügt werden können, wodurch Finger der äußeren Zellen mit in Querrichtung verlaufenden Abschnitten (24) der Zwischenzelle vermischt sind.
  4. Kissen nach einem der vorhergehenden Ansprüche, bei welchem der Zwischenzelle und den äußeren Zellen (2, 3, 4) eine Luftpumpe und eine Steuer/Regelvorrichtung zum Aufblasen und Entleeren der Zwischenzelle während eines abwechselnden Aufblasens und Entleerens der äußeren Zellen zugeordnet sind.
  5. Kissen nach Anspruch 4, bei welchem die Pumpe und die Steuer/Regelvorrichtung ein Schritt-Drehventil umfasst.
  6. Kissen nach einem der vorhergehenden Ansprüche, bei welchem die Zellen ein dampfdurchlässiges Material umfassen.
  7. Stuhl oder Rollstuhl, welcher mit einem Kissen nach einem der vorhergehenden Ansprüche als einem Sitzkissen ausgestattet ist.
  8. Bett, welches mit einem Kissen nach einem der Ansprüche 1 bis 6 als eine Matratze ausgestattet ist.
EP00300684A 1999-02-01 2000-01-28 Druckwechselkissen für Rollstühle und Matratzen Expired - Lifetime EP1031338B8 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9902209 1999-02-01
GBGB9902209.7A GB9902209D0 (en) 1999-02-01 1999-02-01 Alternating pressure pad for wheel chairs and mattresses

Publications (4)

Publication Number Publication Date
EP1031338A2 EP1031338A2 (de) 2000-08-30
EP1031338A3 EP1031338A3 (de) 2003-02-12
EP1031338B1 true EP1031338B1 (de) 2005-12-07
EP1031338B8 EP1031338B8 (de) 2006-03-01

Family

ID=10846900

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00300684A Expired - Lifetime EP1031338B8 (de) 1999-02-01 2000-01-28 Druckwechselkissen für Rollstühle und Matratzen

Country Status (4)

Country Link
EP (1) EP1031338B8 (de)
AT (1) ATE311842T1 (de)
DE (1) DE60024513T2 (de)
GB (2) GB9902209D0 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021049577A1 (ja) * 2019-09-13 2021-03-18 株式会社モルテン 座面用クッション

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9311069D0 (en) * 1993-05-23 1993-07-14 British Astec Medical Alternating pressure pad

Also Published As

Publication number Publication date
EP1031338B8 (de) 2006-03-01
GB9902209D0 (en) 1999-03-24
ATE311842T1 (de) 2005-12-15
GB2346084B (en) 2002-08-21
DE60024513T2 (de) 2006-08-10
EP1031338A2 (de) 2000-08-30
GB2346084A (en) 2000-08-02
EP1031338A3 (de) 2003-02-12
GB0002090D0 (en) 2000-03-22
DE60024513D1 (de) 2006-01-12

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