EP0317009B1 - Bed for therapeutic treatment of a patient - Google Patents
Bed for therapeutic treatment of a patient Download PDFInfo
- Publication number
- EP0317009B1 EP0317009B1 EP19880202536 EP88202536A EP0317009B1 EP 0317009 B1 EP0317009 B1 EP 0317009B1 EP 19880202536 EP19880202536 EP 19880202536 EP 88202536 A EP88202536 A EP 88202536A EP 0317009 B1 EP0317009 B1 EP 0317009B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- wall
- bed
- permeable sheet
- flange
- 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
Links
Images
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 to a bed for therapeutic treatment of a patient, comprising a casing which is filled with small glass balls, and the bottom for the small glass balls is formed by an air-permeable sheet or plate, and which is covered at the top side by a filter cloth which forms the lying surface for the patient, an air chamber which is connected to an air supply line for causing fluidization of the glass balls being formed below the air-permeable sheet.
- Such a bed is known, for example from DE-A-1566439 (US-A-3428973), and is intended in particular for use in hospitals for the care of patients with burns or bedsores.
- the objects of the present invention are to improve this known bed in such a way that it is a light, of sturdy structure which is easy to assemble and take apart, and in which undesirable air leaks are prevented in an effective manner.
- the bed comprises an outer casing containing a supporting rim which is provided along the inner periphery some distance away from the bottom of the outer casing, and on which the air-permeable sheet rests so that the air chamber is formed below it, while provision is made inside said outer casing at a distance from the upright outer side walls thereof for an upright circumferential inner wall which rests on the air-permeable sheet and encloses the glass balls, and in the space between the outer and inner walls means are present for preventing air leakage from the air chamber to this space.
- the double-walled structure of the bed according to the invention provides a stable, light structure which is cheap to produce and with which undesirable air leakage can be effectively prevented.
- the inner wall preferably rests on the air-permeable sheet with a flange directed towards the outer wall, and the means for preventing air leakage preferably comprise pressure elements which are fixed to the outer wall and act upon said flange.
- an air treatment plant is provided in the air supply line to the air chamber.
- air of which the temperature and pressure can be regulated, and which is thus independent of the temperature in the room where the bed is set up, can be fed through the bed.
- the bed contains a pressure gauge, which is intended for measuring the pressure under the patient, and which is connected to a control element which controls the fan unit depending on the measured value.
- a pressure gauge which is intended for measuring the pressure under the patient, and which is connected to a control element which controls the fan unit depending on the measured value.
- the bed comprises an outer casing which is indicated in its entirety by reference number 1, and comprises a bottom part 2 and a circumferential upright outer wall 3. Provision is made along the inner periphery, some distance away from the bottom 2, for a continuous supporting rim 4, which is stepped in the embodiment shown. On this supporting rim 4 rests an air-permeable sheet 5 which is made of, for example, a porous polymer. To support the air-permeable sheet 5, provision is also made for a number of supporting bars 6 extending in the crosswise direction of the bed (see Fig. 3a). An air chamber 7 is in this way formed between the air-permeable sheet 5 and the bottom 2 of the outer casing 1, into which air chamber a line 8 opens via the bottom 2, for the supply of air, which will be discussed in greater detail below.
- the space between the outer wall 3 and the inner wall 9 contains pressure elements which act on the flange 10 and press said flange firmly against the plate 5 and the latter in turn against the supporting rim 4, and prevent air leakage from the air chamber 7 to said space.
- the pressure elements comprise a bar 11 which is provided with external screw thread and is fixed in a drill hole provided with corresponding screw thread in a support 12 fixed on the outer wall 3.
- the top of the bar 11 has a control knob 13, and the bottom has a foot 14 which rests against the flange 10 of the inner wall 9.
- the flange 10 is pressed with force against the plate 5 by means of the knob 13, and said plate is in turn pressed against the stepped support 4.
- Strips of sealing material or sealing tape are provided between the flange 10 and the plate 5 and between the plate 5 and the support 4, in order to ensure an airtight connection between the plate 5 and the inner wall 9 or the support 4. This effectively prevents air leakage from the air chamber 7 to the space between the outer wall 3 and the inner wall 9.
- Fig. 1 three pressure elements are provided along each long side of the bed, and two are provided along each short side of the bed.
- the supports 12 along the long sides of the bed each have a part on the outside of the wall 3 on which a side rail 15 is fitted.
- the glass balls provided inside the wall 9 are covered with a filter cloth or filter sheet 16 which is thrown over the top end of the inner wall 9 and fixed thereto by means of a clamping strip 17 (Fig. 3b).
- a clamping channel 18, which is U-shaped in cross section, and the free ends of the legs of which are each provided with an outward-directed flange 19, 20, is disposed between the outer wall 3 and the inner wall 9.
- the flange 19 here rests on the top of the outer wall 3, while the flange 20 rests on the clamping strip 17 pushed onto the inner wall 9.
- the channel is tensioned between the two walls, so that the two flanges exert slightly downward spring force on the outer wall 3 and the clamping strip 17 respectively.
- Said flange 21 is made of a flexible rubber or plastic material.
- said flange is left out for the sake of clarity, in order to show the pressure elements and the clamping channels.
- the flange 21 can partially come away from the inner wall in the process.
- the clamping channels 18 are fitted in order to prevent the clamping strip 17 from being taken with the flange 21 and the filter sheet from coming off.
- the line 8 for the supply of air to the air chamber 7 is connected to an air treatment plant 22.
- This air treatment plant comprises in succession a filter unit 23, a fan unit 24, a cooling unit 25, and a heating unit 26.
- Air can be fed at a suitable temperature and/or pressure into the air chamber 7 by means of this plant, the air spreading in said chamber and then flowing via the plate 5 through the space filled with the small glass balls, and subsequently flowing out through the filter sheet 16.
- the glass balls are fluidized by the air, so that a patient resting on the filter sheet 16 is uniformly supported, and no local pressure concentrations occur.
- the corner points of the bed are provided with fairly large rounded areas, which prevent the occurrence of dead corners through which insufficient or no air flows and, on the other hand, leave sufficient leg space free for the patient.
- the pressure and the temperature of the infed air can be regulated by means of this air treatment plant, independently of the temperature obtaining in the room where the bed is set up.
- An electronic pressure gauge 27 could be fitted under the patient, to control the fan unit 24 via a control unit 28, so that ideal pressure can be achieved under the patient.
- the filter unit 23 can be fitted with a bacteria filter, in order to prevent bacterial growth in the bed.
- clamping channel 18 can be made integral with the covering flange, possibly together with the clamping strip 17.
- additional means do have to be provided to hold the clamping strip in place, and these could be magnetic strips and the like.
Landscapes
- 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)
- Accommodation For Nursing Or Treatment Tables (AREA)
- Invalid Beds And Related Equipment (AREA)
Abstract
Description
- The invention relates to a bed for therapeutic treatment of a patient, comprising a casing which is filled with small glass balls, and the bottom for the small glass balls is formed by an air-permeable sheet or plate, and which is covered at the top side by a filter cloth which forms the lying surface for the patient, an air chamber which is connected to an air supply line for causing fluidization of the glass balls being formed below the air-permeable sheet.
- Such a bed is known, for example from DE-A-1566439 (US-A-3428973), and is intended in particular for use in hospitals for the care of patients with burns or bedsores.
- The objects of the present invention are to improve this known bed in such a way that it is a light, of sturdy structure which is easy to assemble and take apart, and in which undesirable air leaks are prevented in an effective manner.
- These objects are achieved according to the invention in that the bed comprises an outer casing containing a supporting rim which is provided along the inner periphery some distance away from the bottom of the outer casing, and on which the air-permeable sheet rests so that the air chamber is formed below it, while provision is made inside said outer casing at a distance from the upright outer side walls thereof for an upright circumferential inner wall which rests on the air-permeable sheet and encloses the glass balls, and in the space between the outer and inner walls means are present for preventing air leakage from the air chamber to this space.
- The double-walled structure of the bed according to the invention provides a stable, light structure which is cheap to produce and with which undesirable air leakage can be effectively prevented.
- The inner wall preferably rests on the air-permeable sheet with a flange directed towards the outer wall, and the means for preventing air leakage preferably comprise pressure elements which are fixed to the outer wall and act upon said flange.
- According to a preferred embodiment of the invention, an air treatment plant is provided in the air supply line to the air chamber. In this way, air of which the temperature and pressure can be regulated, and which is thus independent of the temperature in the room where the bed is set up, can be fed through the bed.
- According to another preferred embodiment of the invention, the bed contains a pressure gauge, which is intended for measuring the pressure under the patient, and which is connected to a control element which controls the fan unit depending on the measured value. In this way, the most suitable pressure can be achieved under the patient, which produces a clear improvement in lying comfort.
- Further special features and details of the invention emerge from the description below with reference to the attached drawing, in which:
- Fig. 1 shows a top view of the bed according to the invention;
- Fig. 2 shows a schematic cross section of the bed of Fig. 1;
- Figs. 3a and 3b show the bottom and top part respectively of a section along the line III-III in
- Fig. 1, on a larger scale.
- As can be seen in particular from Figs. 1 and 2 of the drawing, the bed comprises an outer casing which is indicated in its entirety by
reference number 1, and comprises abottom part 2 and a circumferential uprightouter wall 3. Provision is made along the inner periphery, some distance away from thebottom 2, for a continuous supporting rim 4, which is stepped in the embodiment shown. On this supporting rim 4 rests an air-permeable sheet 5 which is made of, for example, a porous polymer. To support the air-permeable sheet 5, provision is also made for a number of supportingbars 6 extending in the crosswise direction of the bed (see Fig. 3a). Anair chamber 7 is in this way formed between the air-permeable sheet 5 and thebottom 2 of theouter casing 1, into which air chamber aline 8 opens via thebottom 2, for the supply of air, which will be discussed in greater detail below. - Inside the outer casing, some distance away from the upright
outer walls 3, provision is made for an uprightcircumferential wall 9 which with an outward-directedflange 10 rests on the air-permeable sheet 5. Small, perfectly round glass balls are placed inside thisinner wall 9. - The space between the
outer wall 3 and theinner wall 9 contains pressure elements which act on theflange 10 and press said flange firmly against theplate 5 and the latter in turn against the supporting rim 4, and prevent air leakage from theair chamber 7 to said space. As shown in Fig. 3a, the pressure elements comprise abar 11 which is provided with external screw thread and is fixed in a drill hole provided with corresponding screw thread in asupport 12 fixed on theouter wall 3. The top of thebar 11 has acontrol knob 13, and the bottom has afoot 14 which rests against theflange 10 of theinner wall 9. Theflange 10 is pressed with force against theplate 5 by means of theknob 13, and said plate is in turn pressed against the stepped support 4. Strips of sealing material or sealing tape, not shown in the drawing, are provided between theflange 10 and theplate 5 and between theplate 5 and the support 4, in order to ensure an airtight connection between theplate 5 and theinner wall 9 or the support 4. This effectively prevents air leakage from theair chamber 7 to the space between theouter wall 3 and theinner wall 9. - As can be seen from Fig. 1, three pressure elements are provided along each long side of the bed, and two are provided along each short side of the bed. The supports 12 along the long sides of the bed each have a part on the outside of the
wall 3 on which aside rail 15 is fitted. - The glass balls provided inside the
wall 9 are covered with a filter cloth orfilter sheet 16 which is thrown over the top end of theinner wall 9 and fixed thereto by means of a clamping strip 17 (Fig. 3b). Aclamping channel 18, which is U-shaped in cross section, and the free ends of the legs of which are each provided with an outward-directedflange outer wall 3 and theinner wall 9. Theflange 19 here rests on the top of theouter wall 3, while theflange 20 rests on theclamping strip 17 pushed onto theinner wall 9. The channel is tensioned between the two walls, so that the two flanges exert slightly downward spring force on theouter wall 3 and theclamping strip 17 respectively. - A covering
flange 21, engaging over the two walls and closing off the space between them, is then fitted. Saidflange 21 is made of a flexible rubber or plastic material. In the top view of Fig. 1 said flange is left out for the sake of clarity, in order to show the pressure elements and the clamping channels. During use of the bed, it will be a regular occurrence for the nursing staff to take hold of theflange 21 to move the bed. Theflange 21 can partially come away from the inner wall in the process. Theclamping channels 18 are fitted in order to prevent theclamping strip 17 from being taken with theflange 21 and the filter sheet from coming off. - As can be seen from Fig. 2, the
line 8 for the supply of air to theair chamber 7 is connected to anair treatment plant 22. This air treatment plant comprises in succession afilter unit 23, afan unit 24, acooling unit 25, and aheating unit 26. Air can be fed at a suitable temperature and/or pressure into theair chamber 7 by means of this plant, the air spreading in said chamber and then flowing via theplate 5 through the space filled with the small glass balls, and subsequently flowing out through thefilter sheet 16. The glass balls are fluidized by the air, so that a patient resting on thefilter sheet 16 is uniformly supported, and no local pressure concentrations occur. As shown in Fig. 1, the corner points of the bed are provided with fairly large rounded areas, which prevent the occurrence of dead corners through which insufficient or no air flows and, on the other hand, leave sufficient leg space free for the patient. - The pressure and the temperature of the infed air can be regulated by means of this air treatment plant, independently of the temperature obtaining in the room where the bed is set up. An
electronic pressure gauge 27 could be fitted under the patient, to control thefan unit 24 via acontrol unit 28, so that ideal pressure can be achieved under the patient. Moreover, thefilter unit 23 can be fitted with a bacteria filter, in order to prevent bacterial growth in the bed. - It will be clear that the present invention is not restricted to the embodiment shown and described here, but that many variations are possible within the scope of the invention. For example, the
clamping channel 18 can be made integral with the covering flange, possibly together with theclamping strip 17. In this case, additional means do have to be provided to hold the clamping strip in place, and these could be magnetic strips and the like.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88202536T ATE72105T1 (en) | 1987-11-12 | 1988-11-14 | BED FOR MEDICAL TREATMENT OF A PATIENT. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8702712 | 1987-11-12 | ||
NL8702712A NL8702712A (en) | 1987-11-12 | 1987-11-12 | BED FOR THERAPEUTIC TREATMENT OF A PATIENT. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0317009A1 EP0317009A1 (en) | 1989-05-24 |
EP0317009B1 true EP0317009B1 (en) | 1992-01-29 |
Family
ID=19850910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19880202536 Expired - Lifetime EP0317009B1 (en) | 1987-11-12 | 1988-11-14 | Bed for therapeutic treatment of a patient |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0317009B1 (en) |
AT (1) | ATE72105T1 (en) |
DE (1) | DE3868235D1 (en) |
NL (1) | NL8702712A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10238560B2 (en) | 2013-03-13 | 2019-03-26 | Hill-Rom Services, Inc. | Air fluidized therapy bed having pulmonary therapy |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4017365A1 (en) * | 1990-05-30 | 1992-02-13 | Heinrich Prof Dr Ing Reents | Floating support of patient - using air bed with continuously controllable and variable air pressure |
US5402542A (en) * | 1993-04-22 | 1995-04-04 | Ssi Medical Services, Inc. | Fluidized patient support with improved temperature control |
US5539943A (en) * | 1994-03-08 | 1996-07-30 | Ssi Medical Services, Inc. | Apparatus and method for percussion of fluidized support surface |
US5540651A (en) * | 1994-04-20 | 1996-07-30 | Thomas M. Risch | Waterproof hydrotherapy bed |
US6721979B1 (en) | 1995-04-25 | 2004-04-20 | Kci Licensing, Inc. | Air bed with fluidized bead surface and related methods |
AU5571496A (en) * | 1995-04-25 | 1996-11-18 | Kinetic Concepts, Inc. | Air bed with fluidized bead surface and related methods |
DE60038870D1 (en) * | 1999-03-29 | 2008-06-26 | Kci Licensing Inc | BED WITH FLUIDIZED BEADS AND INFLATABLE DIFFUSER |
US6934990B2 (en) * | 2002-12-20 | 2005-08-30 | Tom Rapisarda | Non-liquid buoyant bedding |
MX2018011935A (en) | 2016-04-01 | 2019-01-15 | Utopix Medical Llc | Tilt-tip moldable total care bed. |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3428973A (en) * | 1966-03-17 | 1969-02-25 | Thomas S Hargest | Fluidized supporting apparatus |
US4564965A (en) * | 1984-01-17 | 1986-01-21 | Support Systems International, Inc. | Fluidized patient support system |
-
1987
- 1987-11-12 NL NL8702712A patent/NL8702712A/en not_active Application Discontinuation
-
1988
- 1988-11-14 DE DE8888202536T patent/DE3868235D1/en not_active Expired - Fee Related
- 1988-11-14 AT AT88202536T patent/ATE72105T1/en not_active IP Right Cessation
- 1988-11-14 EP EP19880202536 patent/EP0317009B1/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10238560B2 (en) | 2013-03-13 | 2019-03-26 | Hill-Rom Services, Inc. | Air fluidized therapy bed having pulmonary therapy |
Also Published As
Publication number | Publication date |
---|---|
NL8702712A (en) | 1989-06-01 |
ATE72105T1 (en) | 1992-02-15 |
DE3868235D1 (en) | 1992-03-12 |
EP0317009A1 (en) | 1989-05-24 |
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