Beds – Bedclothing – And means to facilitate changing thereof
Patent
1993-06-11
1995-02-14
Trettel, Michael F.
Beds
Bedclothing
And means to facilitate changing thereof
5453, 5912, A61G 700
Patent
active
053882911
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
In a fluidized medical bed containing granular constituents of very small dimensions (of the order of 80 to 150 microns, for example), waste from medical treatment and impurities accumulate and must be evacuated. Instead of emptying all of said partially soiled granular constituents and replacing them with a volume of fresh granular constituents, which is expensive, the invention proposes replacing only those constituents which contain waste or which are soiled.
SUMMARY OF THE INVENTION
To that end, according to the invention, the receptacle that the fluidized medical bed comprises, itself comprises a lower wall; a porous bottom disposed in the vicinity of the lower wall, defining between itself and said wall an enclosure for admission of pressurized gas, covered with a layer of granular constituents and constituted by several parts, of which the upper faces are inclined with respect to the horizontal, each of them having its lower part terminating at a waste collector; at least one waste collector comprising a reservoir, which is placed below the porous bottom, which is connected, in its upper part, to the lower part of at least one of said parts constituting said porous bottom, and which comprises two parts, a first part, fast with the porous bottom, terminating in a shut-off valve provided with a first leakproof coupling and the second part, capable of being detachably fixed to said leakproof coupling of the first part.
The following advantageous arrangements are in addition preferably adopted: second coupling for connection of a pressurized gas supply; enclosure and comprises two sections connected together by a removable coupling; orifice capable of being obturated, usable in particular for extracting the waste.
The principal advantage of a fluidized medical bed according to the invention resides in the possibility of periodically evacuating therefrom the waste and impurities, easily and at low cost.
The invention will be more readily understood and secondary characteristics and their advantages will appear in the course of the description of an embodiment given hereinafter by way of example.
BRIEF DESCRIPTION OF THE DRAWINGS
It is understood that the description and the drawings are given only by way of indicative and non-limiting example.
Reference will be made to the accompanying drawings, in which:
FIG. 1 is a longitudinal section of a fluidized medical bed according to the invention; and
FIG. 2 is a transverse section along II--II of FIG. 1.
DETAILED DESCRIPTION OF THE INVENTION
The bed shown in the Figures comprises: by an upper opening and comprises a lower wall 4 made of corrugated sheet metal for example, on which rest gas-porous plates 5 which are all inclined with respect to the horizontal H, descending towards the central part of the receptacle to arrive at the upper part 6 of a vertical cylindrical collector connected to the lower wall 4 and to the plates 5; part 6, being connected thereto by a rapid coupling 8 and provided with a bottom 9; connection to the plates 5 and to the lower wall 4, and the dismountable rapid coupling 8 and capable of obturating said upper part 6 of the collector; above the bottom; porous wall 11, provided with a valve 25; treating the air, adapted to disinfect and reheat it, if this is necessary, contained in the space 14 inside the frame 1, located below the receptacle 3; conduit 16 for injection of treated gas in the enclosure 17 included between the lower wall 4 and the porous plates 5, connected to the lower wall 4, and a second conduit 18 for injection of treated gas in the collector 6-7; 7 of the collector, on the other hand, by means of a dismountable rapid coupling 21, to the end of the second conduit 18; of 80 to 150 microns, which fills a part of the receptacle 3; and constituents 22, abuts on the periphery 24 of the opening of the receptacle 3, and allows a patient to rest in the bed.
It is also indicated that, taking into account the difference in height of the connections of the first conduit 16 to the lower wal
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