EP0617946B1 - Fluidisierte Bettmatratze zur medizinischen Verwendung mit integrierten Mitteln zur Dekontamination - Google Patents

Fluidisierte Bettmatratze zur medizinischen Verwendung mit integrierten Mitteln zur Dekontamination Download PDF

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Publication number
EP0617946B1
EP0617946B1 EP19940400615 EP94400615A EP0617946B1 EP 0617946 B1 EP0617946 B1 EP 0617946B1 EP 19940400615 EP19940400615 EP 19940400615 EP 94400615 A EP94400615 A EP 94400615A EP 0617946 B1 EP0617946 B1 EP 0617946B1
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EP
European Patent Office
Prior art keywords
tank
bed mattress
fluidised bed
mattress according
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
EP19940400615
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English (en)
French (fr)
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EP0617946A1 (de
Inventor
Jean-Michel Varenne
André Mazure
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.)
EQUIPEMENT MEDICAL KCI, SARL
Original Assignee
J O U K - Ome
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Filing date
Publication date
Application filed by J O U K - Ome filed Critical J O U K - Ome
Publication of EP0617946A1 publication Critical patent/EP0617946A1/de
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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
    • A61G7/05746—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 fluidised by air flow

Definitions

  • the invention relates more particularly to a mattress of the type comprising a tank, open at its upper face, in which a dense suspension of particles is created in an upward flow of fluid and which is covered by at least one covering fabric.
  • the upper covering fabric it is of course possible to directly sterilize the upper covering fabric either by replacing it in the form of a disposable element, or by sterilizing it, for example by boiling or by subjecting it to radiation.
  • EP-A-0 091 349 describes a fluidized bed mattress, in particular for medical use, of the type comprising a tank, open at its upper face, in which a dense suspension of particles is created in an upward flow of fluid and which is covered by at least one envelope fabric, and integrated means for decontaminating the particles.
  • EP-A-0 357 182 describes a fluidized bed mattress comprising heating means intended to decontaminate the particles in suspension in the fluid stream.
  • the fluidized bed mattress 10 shown diagrammatically in FIG. 1 is essentially constituted by a tank of mechanically welded stainless steel sheet 12.
  • the tank 12 has a generally rectangular parallelepiped shape, the upper face of which is open upwards and is delimited by an edge 14.
  • the tank has two end side walls 16 and two longitudinal walls 18 and a rectangular flat bottom 20.
  • the bottom 20 is doubled by a fluidization plate 22 which defines therewith a fluidization chamber which is connected to a pump (not shown) which makes it possible to inject a fluid under pressure into the chamber, the fluidization plate made of microperforated polyethylene.
  • the tank 12 is equipped with means for in situ decontamination of the mass of the particles.
  • These means consist of electrical resistors 26, three in number, each of which has a hairpin shape which extends longitudinally inside the tank from one of the lateral end faces 16.
  • the resistors 26 rest on a perforated intermediate plate 28 which is fixed in the tank near the bottom.
  • the intermediate plate 28 has raised ribs 30, which are here transverse ribs of substantially square section, on which the resistors 26 which are fixed to it by fixing lugs 32 rest.
  • the presence of the ribs 30 makes it possible to prevent the heat produced by the resistors from being absorbed too largely by the metal of the intermediate plate 28.
  • each of the resistors 26 open to the outside of the tank where they are connected to electric wires 34 for supplying current protected against heat.
  • the resistors 26 are thus connected to means for supplying electrical energy, and to decontamination control circuits, which are arranged in a power supply and control block shown diagrammatically in the figure and designated by the reference 40.
  • the visible face of the block 40 comprises for example display means 42, a pressure gauge 44 for displaying the fluidization pressure, at least one key switch 46 and a cover 48 allowing access to a circuit breaker.
  • the technical block 40 contains transformation, command and regulation means, only some of which will be described later.
  • FIG. 2 illustrates the wiring diagram of the three resistors 26 contained in the tank 12 which are here resistors supplied with 220 Volts and which each dissipate a maximum of 1100 Watts.
  • the resistors 26 and the probe 50 are connected to the block 40 by a ten-point socket 52 of 16 amperes at 380 volts.
  • This circuit comprises three switching devices arranged in series which constitute as many safety devices in order to avoid accidental start-up of the heating means for decontamination.
  • These devices consist of a contactor 56 connected to the circuit breaker covered by the cover 48, a switch 58 and a second switch 60 controlled by the key lock 46.
  • the resistors are energized by successively actuating these three devices 56 to 60.
  • a supply circuit for a programmable display 62 has also been shown to display the decontamination temperature measured by the probe 50.
  • the decontamination of the particles can be made even more homogeneous in the case where the fluidization control circuit includes a regulation circuit to produce a variable fluidization which is obtained, for example using a digital and programmable frequency converter. .
  • a graduated potentiometer By acting on a graduated potentiometer, it is then possible to vary the frequency of the motor supply current, for example from 25 to 60 Hz, and therefore the speed of the motor and thus the flow rate of the fluidization pump.
  • the invention which has just been described makes it possible to ensure, integrated into the fluidized bed mattress, a function of in-situ decontamination of the particles, during a change of patient or after a given period of use of the lit, killing the colonies of microorganisms by heating.

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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)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)

Claims (8)

  1. Matratze mit fluidisiertem Bett (10), insbesondere für medizinischen Gebrauch, des Typs mit einem Kasten (12), der an seiner Oberseite offen ist, in dem eine dichte Suspension von Partikeln in einer aufsteigenden Fluidströmung erzeugt wird und der durch wenigstens eine Abdeckleinwand (24) bedeckt ist, sowie mit integrierten Mitteln zu Dekontamination der Partikel, dadurch gekennzeichnet, daß die Dekontaminationsmittel (26) in den Kasten integriert sind und Heizmittel aufweisen, die elektrische Widerstände (26), die im Kasten (12) in der Masse der Partikel angeordnet sind, sowie Mittel zum Versorgen der Widerstände (26) mit elektrischer Energie enthalten.
  2. Matratze mit fluidisiertem Bett nach Anspruch 1, dadurch gekennzeichnet, daß sich die Widerstände (26) im Kasten (12) in dessen Längsrichtung erstrecken.
  3. Matratze mit fluidisiertem Bett nach Anspruch 2, dadurch gekennzeichnet, daß die Widerstände (26) durch eine durchlochte Zwischenplatte (28), die im Kasten (12) angeordnet ist, getragen werden.
  4. Matratze mit fluidisiertem Bett nach Anspruch 3, dadurch gekennzeichnet, daß die Zwischenplatte (28) erhabene Teile (30) in bezug auf ihre allgemeine Ebene aufweist, die die Widerstände (26) tragen.
  5. Matratze mit fluidisiertem Bett nach irgendeinem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Heizmittel Widerstände enthalten, wovon jeder die Form einer Haarnadel besitzt, die sich von einer seitlichen Endfläche (16) des Kastens (12) zueinander parallel erstrecken und parallelgeschaltet sind.
  6. Matratze mit fluidisiertem Bett nach irgendeinem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Mittel für die Versorgung mit elektrischer Energie eine Thermostatregelungsschaltung (54) enthalten, die ihrerseits einen Sensor (50) für die Dekontaminationstemperatur aufweist.
  7. Matratze mit fluidisiertem Bett nach irgendeinem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Mittel für die Versorgung mit elektrischer Energie Mittel (62) für die Anzeige der Dekontaminationstemperatur enthalten.
  8. Matratze mit fluidisiertem Bett nach irgendeinem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Mittel für die Versorgung mit elektrischer Energie wenigstens eine Sicherheitsvorrichtung (56, 58, 60) für die Steuerung des Einschaltens der Heizmittel (26) enthalten.
EP19940400615 1993-03-22 1994-03-22 Fluidisierte Bettmatratze zur medizinischen Verwendung mit integrierten Mitteln zur Dekontamination Expired - Lifetime EP0617946B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9303272A FR2702957B1 (fr) 1993-03-22 1993-03-22 Matelas a lit fluidise a usage medical comportant des moyens integres de decontamination.
FR9303272 1993-03-22

Publications (2)

Publication Number Publication Date
EP0617946A1 EP0617946A1 (de) 1994-10-05
EP0617946B1 true EP0617946B1 (de) 1997-12-29

Family

ID=9445209

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940400615 Expired - Lifetime EP0617946B1 (de) 1993-03-22 1994-03-22 Fluidisierte Bettmatratze zur medizinischen Verwendung mit integrierten Mitteln zur Dekontamination

Country Status (4)

Country Link
EP (1) EP0617946B1 (de)
DE (1) DE69407460T2 (de)
ES (1) ES2111866T3 (de)
FR (1) FR2702957B1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8065763B2 (en) 2006-10-13 2011-11-29 Amerigon Incorporated Air conditioned bed
US8181290B2 (en) 2008-07-18 2012-05-22 Amerigon Incorporated Climate controlled bed assembly
US8191187B2 (en) 2009-08-31 2012-06-05 Amerigon Incorporated Environmentally-conditioned topper member for beds
US8402579B2 (en) 2007-09-10 2013-03-26 Gentherm Incorporated Climate controlled beds and methods of operating the same
US8893329B2 (en) 2009-05-06 2014-11-25 Gentherm Incorporated Control schemes and features for climate-controlled beds
US9125497B2 (en) 2007-10-15 2015-09-08 Gentherm Incorporated Climate controlled bed assembly with intermediate layer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2523841B1 (fr) * 1982-03-25 1985-10-25 Lacoste Francois Lit fluidise a usage therapeutique
CA1320330C (en) * 1988-08-11 1993-07-20 Alfred W. Siman Apparatus and method for decontamination of microspheres used in a fluidized patient support system

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8065763B2 (en) 2006-10-13 2011-11-29 Amerigon Incorporated Air conditioned bed
US8732874B2 (en) 2006-10-13 2014-05-27 Gentherm Incorporated Heated and cooled bed assembly
US8402579B2 (en) 2007-09-10 2013-03-26 Gentherm Incorporated Climate controlled beds and methods of operating the same
US9125497B2 (en) 2007-10-15 2015-09-08 Gentherm Incorporated Climate controlled bed assembly with intermediate layer
US8181290B2 (en) 2008-07-18 2012-05-22 Amerigon Incorporated Climate controlled bed assembly
US8418286B2 (en) 2008-07-18 2013-04-16 Gentherm Incorporated Climate controlled bed assembly
US8782830B2 (en) 2008-07-18 2014-07-22 Gentherm Incorporated Environmentally conditioned bed assembly
US8893329B2 (en) 2009-05-06 2014-11-25 Gentherm Incorporated Control schemes and features for climate-controlled beds
US8191187B2 (en) 2009-08-31 2012-06-05 Amerigon Incorporated Environmentally-conditioned topper member for beds
US8332975B2 (en) 2009-08-31 2012-12-18 Gentherm Incorporated Climate-controlled topper member for medical beds
US8621687B2 (en) 2009-08-31 2014-01-07 Gentherm Incorporated Topper member for bed

Also Published As

Publication number Publication date
FR2702957B1 (fr) 1995-06-16
DE69407460T2 (de) 1998-08-13
FR2702957A1 (fr) 1994-09-30
EP0617946A1 (de) 1994-10-05
DE69407460D1 (de) 1998-02-05
ES2111866T3 (es) 1998-03-16

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