EP0712306A1 - Fluidity of particles in an enclosure - Google Patents
Fluidity of particles in an enclosureInfo
- Publication number
- EP0712306A1 EP0712306A1 EP94926405A EP94926405A EP0712306A1 EP 0712306 A1 EP0712306 A1 EP 0712306A1 EP 94926405 A EP94926405 A EP 94926405A EP 94926405 A EP94926405 A EP 94926405A EP 0712306 A1 EP0712306 A1 EP 0712306A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fluidity
- enclosure
- bag
- particles
- solid 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.)
- Granted
Links
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.
- Am 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.
- Can 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. 1488290 is similar to C 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.
- the invention consists of three elements:
- a sealed bag partially filled with e.g. polystryrene beads.
- a contoured flexible support with inclined walls wich serve as enclosure for the loosely filled bag.
- 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. Use of vapour permeable sheets keeps contamination from the mattress in case of incontinence.
Abstract
Description
Claims
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 (en) | 1993-08-04 | 1994-08-02 | Fluidity of particles in an enclosure |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0712306A1 true EP0712306A1 (en) | 1996-05-22 |
EP0712306B1 EP0712306B1 (en) | 1999-04-21 |
Family
ID=26647122
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94926405A Expired - Lifetime EP0712306B1 (en) | 1993-08-04 | 1994-08-02 | Fluidity of particles in an enclosure |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0712306B1 (en) |
AU (1) | AU7625394A (en) |
DE (1) | DE69418044D1 (en) |
WO (1) | WO1995004514A1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3762404A (en) * | 1969-08-21 | 1973-10-02 | Olympic Surgical Co Inc | Positioning aid |
DE2504232A1 (en) * | 1975-02-01 | 1976-08-05 | Willi Schmidt | Cushion for splinting and supporting limb - adapting itself to shape of limb and allowing variations due to shrinkage |
GB1591024A (en) * | 1977-09-20 | 1981-06-10 | Burnett J S | Support device |
ATE69428T1 (en) * | 1986-04-09 | 1991-11-15 | Lepinoy Ind | METHOD, DEVICE AND PADDED PRODUCT FOR SUPPORTING AN OBJECT. |
GB2202444A (en) * | 1987-02-23 | 1988-09-28 | Johnson & Johnson Orthopaedics | A cervical collar and cover |
-
1994
- 1994-08-02 DE DE69418044T patent/DE69418044D1/en not_active Expired - Lifetime
- 1994-08-02 EP EP94926405A patent/EP0712306B1/en not_active Expired - Lifetime
- 1994-08-02 WO PCT/NL1994/000180 patent/WO1995004514A1/en active IP Right Grant
- 1994-08-02 AU AU76253/94A patent/AU7625394A/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO9504514A1 * |
Also Published As
Publication number | Publication date |
---|---|
AU7625394A (en) | 1995-02-28 |
EP0712306B1 (en) | 1999-04-21 |
WO1995004514A1 (en) | 1995-02-16 |
DE69418044D1 (en) | 1999-05-27 |
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