EP0712306B1 - Procede permettant d'influer sur la fluidite de particules solides dans un espace clos - Google Patents

Procede permettant d'influer sur la fluidite de particules solides dans un espace clos Download PDF

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Publication number
EP0712306B1
EP0712306B1 EP94926405A EP94926405A EP0712306B1 EP 0712306 B1 EP0712306 B1 EP 0712306B1 EP 94926405 A EP94926405 A EP 94926405A EP 94926405 A EP94926405 A EP 94926405A EP 0712306 B1 EP0712306 B1 EP 0712306B1
Authority
EP
European Patent Office
Prior art keywords
recess
beads
bag
bed
particles
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
EP94926405A
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German (de)
English (en)
Other versions
EP0712306A1 (fr
Inventor
Cornelis Johannes Maria De Rooy
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0712306A1 publication Critical patent/EP0712306A1/fr
Application granted granted Critical
Publication of EP0712306B1 publication Critical patent/EP0712306B1/fr
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
    • A61G7/05738—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor with fluid-like particles, e.g. sand, mud, seeds, gel, beads
    • A61G7/05753—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor with fluid-like particles, e.g. sand, mud, seeds, gel, beads air-evacuated, e.g. in order to adapt to the form of the patient

Definitions

  • This invention consists of a bead-filled mattress placed in a supporting structure, designed to prevent bed sores in bed-ridden patients.
  • US-A-4577358 describes a bean bag body support for use with medical and dental patients. Baffles and cups are used to discourage displacement of filler material.
  • CA-A-934078 covers a positioning aid designed for immobilising a part of a medical patients body. Form stability is achieved by evacuating air from the bag.
  • FR-A-1488290 is similar to CA-A-934078 but uses a high level of filling to prevent migration of filler material.
  • WO 0381 uses the fluid bed principle to enhance mobility and reflow of filler material. None of the above inventions achieves the desired effect or balance of fluidity and stability required to offer relief to (mostly) bed-ridden patients prone to bed-sores.
  • the problem to prevent bed sores is one of pressure distribution and avoiding shear forces.
  • Mattresses with elastic behaviour like polyether have poor performance both in distributing pressure in the body tissue and avoiding shear on the skin.
  • Waterbeds have good pressure distribution but induce shear foreces on the skin.
  • the fluid bed solution is a good one but is noisy and difficult to handle both for patient and staff.
  • the original bean bag gives good support in the beginning but shows signs of campacting resulting in poor adaptation to body movements and migration of filler material to the extremes of the mattress.
  • US-A-4213213 describes an airtight enclosure filled with beads to be used in a chair for supporting purposes. This uses inflation for modelling and subsequent deflation for support.
  • the invention consists of three elements:
  • Containing the bag in a flexible support structure with inclined walls has also been found to improve the characteristics of stability and fluidity, whilst reducing the amount of filler material required.
  • the filler material can be placed directly in the supporting tub, the top surface being sealed with an interchangeable sheet. In all cases use of thin pliable fabric is giving the best results.
  • vapour permeable sheets keeps contamination from the mattress in case of incontinence. It has been found that regulation of the amount of air wich is in the bag together with the filler material offers the only means of counteracting the effects of compaction resulting in reduction of the fluidity of the filler material occurring with the passage of time. Addition of approximately one litre of air into a bag wich has been in use for some time reinstates it to its original condition. The air wich has been introduced disappears rapidly when a pervious material like cotton is used, whearas an airtight bag, although solving this problem, does not absorb body perspiration. The best compromise would seem to be a vapour permeable material such as tenting fabric or goretex, where introduction of air at a rate of about one litre per hour is sufficient. Furthermore, ventilation of filler material can be achieved by providing an air outlet also.

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  • Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Invalid Beds And Related Equipment (AREA)

Claims (2)

  1. Elément de support d'une personne retenu au lit pour la prévention des plaies de lit caractérisé par un support flexible qui a dans la surface supérieure un creux avec un profil en forme de V qui s'étend le long du centre du support, et une enveloppe impermeable partiellement rempli de petits grains placée dans le creux précité, les côtés inclinés du creux précité servant à contenir l'enveloppe à grains précité.
  2. Elément de support d'une personne retenu au lit pour la prévention des plaies de lit caractérisé par un support flexible qui a dans la surface supérieure un creux avec un profil en forme de V qui s'étend le long du centre du support, le creux précité étant rempli de petits grains et un drap échangeable placé sur la surface supérieure des grains, ou les grains sont contenus par les côtés inclinés du creux et le drap interchangeable.
EP94926405A 1993-08-04 1994-08-02 Procede permettant d'influer sur la fluidite de particules solides dans un espace clos Expired - Lifetime EP0712306B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
NL9301359 1993-08-04
NL9301359 1993-08-04
NL9302092 1993-12-02
NL9302092 1993-12-02
PCT/NL1994/000180 WO1995004514A1 (fr) 1993-08-04 1994-08-02 Procede permettant d'influer sur la fluidite de particules solides dans un espace clos

Publications (2)

Publication Number Publication Date
EP0712306A1 EP0712306A1 (fr) 1996-05-22
EP0712306B1 true EP0712306B1 (fr) 1999-04-21

Family

ID=26647122

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94926405A Expired - Lifetime EP0712306B1 (fr) 1993-08-04 1994-08-02 Procede permettant d'influer sur la fluidite de particules solides dans un espace clos

Country Status (4)

Country Link
EP (1) EP0712306B1 (fr)
AU (1) AU7625394A (fr)
DE (1) DE69418044D1 (fr)
WO (1) WO1995004514A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3762404A (en) * 1969-08-21 1973-10-02 Olympic Surgical Co Inc Positioning aid
DE2504232A1 (de) * 1975-02-01 1976-08-05 Willi Schmidt Kissen, insbesondere zur schienung und lagerung von kranken gliedmassen und anderen koerperteilen des menschen
GB1591024A (en) * 1977-09-20 1981-06-10 Burnett J S Support device
DE3774525D1 (de) * 1986-04-09 1991-12-19 Lepinoy Ind Verfahren, vorrichtung und gepolstertes produkt fuer die unterstuetzung eines gegenstandes.
GB2202444A (en) * 1987-02-23 1988-09-28 Johnson & Johnson Orthopaedics A cervical collar and cover

Also Published As

Publication number Publication date
AU7625394A (en) 1995-02-28
EP0712306A1 (fr) 1996-05-22
WO1995004514A1 (fr) 1995-02-16
DE69418044D1 (de) 1999-05-27

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