EP0942704A1 - Patient support - Google Patents

Patient support

Info

Publication number
EP0942704A1
EP0942704A1 EP98946561A EP98946561A EP0942704A1 EP 0942704 A1 EP0942704 A1 EP 0942704A1 EP 98946561 A EP98946561 A EP 98946561A EP 98946561 A EP98946561 A EP 98946561A EP 0942704 A1 EP0942704 A1 EP 0942704A1
Authority
EP
European Patent Office
Prior art keywords
pad
patient
cells
support
cell
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
Application number
EP98946561A
Other languages
German (de)
French (fr)
Other versions
EP0942704B1 (en
Inventor
Paul William Chapman
Veronica Irene Fletcher
Alastair George Mcleod
Clive Russel Perry
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.)
Huntleigh Technology Ltd
Original Assignee
Huntleigh Technology Ltd
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 Huntleigh Technology Ltd filed Critical Huntleigh Technology Ltd
Publication of EP0942704A1 publication Critical patent/EP0942704A1/en
Application granted granted Critical
Publication of EP0942704B1 publication Critical patent/EP0942704B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • A61G7/05769—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor with inflatable chambers
    • A61G7/05776—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor with inflatable chambers with at least two groups of alternately inflated chambers

Definitions

  • This invention relates to a patient support and in particular to an alternating pressure pad used in prone nursing.
  • Alternating pressure pads are commonly used in the prevention of decubitus ulcers in bedridden patients, but such patients requiring mechanical ventilation or artificial respiration may need to be nursed in the prone position in order to increase the oxygen level in arterial blood, achieved by liberating the dorsal alveoli from lung oedema fluid.
  • Prone nursing is a technique in widespread use, with existing systems requiring the patient to be laid face down onto a bed having specific mechanical lifting aids to lift the patient's chest off the bed to provide a space beneath the face and neck for nasal, ventilation and tracheotomy tubes to be inserted and hang freely from the patient.
  • a nurse With the patient in this position, a nurse has access to the face and neck areas for nasogastric tubes, endogastric tubes, ventilator hoses and tracheotomoy tubing, as appropriate, and can perform medical procedures such as pulmonary drainage via suction.
  • the invention seeks to provide an alternating pressure pad capable of supporting a patient in a prone 0 position thereby avoiding the need to move the patient to a different bed and additionally maintaining pressure relief for the patient.
  • the invention provides a patient support comprising an alternating pressure pad having separate sets of alternately inflatable cells, at least one further inflatable cell provided under the pad, means to support a head of a patient lying thereon, and control means arranged to maintain alternate inflation and deflation of the cells of the pad, to deflate the cells at the head end of the pad and also to inflate the cell(s) provided under the pad in order to raise the level of the chest of a patient supported on the pad.
  • the deflation of the cells at the head end of the pad provides a space beneath the face and neck of a patient for nasal, ventilation and tracheotomy tubes to be inserted and hang freely.
  • Inflation of the cell under the pad raising the level of the lungs above the rest of the body lowers the abdominal tissue pressure thereby reducing pressure on the diaphragm and allowing greater tidal air volume during artificial respiration.
  • there is greater perfusion and oxygenation of the dorsal lower lung area reducing accumulation of oedema around the lung and chest area.
  • At least one inflatable cell is provided under the foot end of the pad which when inflated raises the feet of a patient supported on the pad.
  • the cells under the pad may be inflated laterally to provide rotational therapy for the patient .
  • the pad includes at least a further 0 inflatable cell to support the face and shoulder of a person lying thereon. More preferably, the cell is V- shaped and may be semi-transparent to allow inspection of the face from the side of the pad without movement of the head.
  • the combined action of the deflated head cells, the cells elevating the chest and feet and the V-shaped cell to raise the face and neck provides an optimum position for prone nursing which is difficult to achieve on conventional air beds or pads.
  • the alternately inflatable cells for supporting the abdomen of a patient lying thereon may be individually selectively deflated to facilitate breathing.
  • a cover extends over and around the pad.
  • the control means and means for selectively deflating some of the cells are accessible outside the cover, for ease of operation and reduced risk of contamination of the pad.
  • Figure 1 shows a schematic representation of a preferred embodiment of the invention
  • Figure 2 is a schematic cross-sectional representation of the alternating pressure pad in Figure 1;
  • Figure 3 is a cross-sectional view of a two position valve according to the invention
  • Figure 4 is a schematic view of an air switch according to the invention
  • the preferred embodiment comprises an alternating pressure pad 1 including alternately inflatable cells 1', 1''.
  • the cells 1' and 1'' are alternately supplied with air from a compressor 2.
  • the cells 1' and 1'' are supplied air from respective channels 6 and 7. It is envisaged that cells in series of three or more may also be used or that more than one cell in any one series may be inflated alternately.
  • the cells are shaped as elongate cylinders which in the preferred embodiment extend transversely across the pad.
  • the cells may be individually formed and restrained onto a base sheet to form the alternating pressure pad or may be made from top and bottom sheet material welded together to define alternately inflatable cells.
  • the cells 1', 1'' are supplied with fluid by channels 6 and 7 which run along the side of the cells. These channels have non return valve connections to a third channel 8 which feeds air continuously to the head cells 3 and the inflatable cells 4 under the head end of the pad via the air switch 12.
  • the inflatable cells 4 are positioned under the alternating cells for supporting the torso of a patient lying thereon, towards the head end, and arranged to inflate individually or together to provide torso height adjustment to enable ventilation access to the patients face.
  • These cells 4 may be "U” shaped to contour around a pneumatic automatic pressure adjuster (not shown) which may be used to maintain an optimum support pressure level .
  • Linked to the cells 4 may be a cell 5 that inflates to provide increased foot clearance.
  • These cells 4 and 5 may also be inflated laterally to provide rotational therapy for the patient.
  • the first alternating cell 1' or 1'', next to the head cells 3 when deflated, may be converted to a static cell 9 so that constant support keeps the patient in a 0 stable position.
  • a number of the remaining alternately inflatable cells 1' and 1 ' ' for supporting the torso of a patient may be connected to the feed channels 6 or 7 via two position valves 10.
  • the valves 10 each comprise a body 20 extending through the individual pad cell 1' and channel 6 supplying air to it. The valve body end also passes through the outer cover 30.
  • the valve body has two components, an inner component 21 inserted into the bore of an outer component 22, openings 23 and 24 are provided in the inner component and complimentary openings 25 and 26 are provided in the outer component with openings 23 and 25 interconnecting the cells 1' with channel 6. Openings 24 and 26 allow for venting of the cell 1' .
  • the openings 25 and 26 in the outer component are laterally offset so that in one position the cell may be supplied with air by the respective channel and in the other position the cell may be disconnected from the channel and allowed to deflate without affecting the adjacent cells. Therefore, the valve 10 whilst allowing for individual cell deflation will isolate that cell from the channel 6 or 7 so that air is not lost from the system.
  • the valves 10 also pass through the outer cover and have a knob attached which will indicate the "Vent / Close" positions. As access to operating these valves is on the outside the risk of contaminating the mattress is minimised.
  • SUBSTITUTE SHEET (RULB26) "V" shaped cell 11 may be provided that at its apex supports the head and with its two ends secured under the patients arm pits supports the patient's shoulders and chest . It is possible to use mechanical cantilever type mechanisms with a mask allowing access to the face and throat of the patient to support the head. Another option could be a more complex structure having a fold away design, with storage within the pad. Mounted to the frame could be a pressure reducing pad utilising either air, foam or gel agent whilst enabling access to the face and throat .
  • the compressor 2 supplies pressurised air to channels 6 and 7 feeding alternately inflatable cells 1' and 1' ' .
  • a rotary valve (not shown) alternates the supply of air to the respective channels 6 and 7.
  • the control of air supply to the rest of the cells is by means of an air switch 12.
  • the air switch 12 comprises two mating faces, one stationary 12a and the other rotatable 12b.
  • the stationary face 12a has an inlet 13 connected to channel 7, an inlet 14 connected to the compressor, outlet 15a to cell 9, outlets 15b and 15c to the cells 4 and 5 and outlet 15d to the head cells 3.
  • the other mating face 12b has arced grooves 16a and 16b that are configured to feed air to the different outlets 15a to 15d and cutaway sections 17a and 17b to exhaust the air from outlets 15a to 15b depending on its position with respect to the stationary face 12a.
  • grooved quadrant 16a connects the inlet 14 to outlet 15d to supply 0 continuous air to the head cells 3 and also groove 16b connects inlet 13 to outlet 15a to supply alternating air

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)
  • Invalid Beds And Related Equipment (AREA)

Abstract

A patient support for supporting a patient in a prone position on an alternating pressure pad (1). The alternating pressure pad comprises separate sets of alternately inflatable cells (1', 1'') and additionally includes further static inflatable cells (4, 5) provided under the pad to raise the chest and feet of a patient supported thereon. The cells (3) of the pad for supporting the head are also deflated to allow the nurse or carer access to the face and neck for nasal, ventilation and tracheotomy tubes to be inserted and hang freely. A V-shaped inflatable cell supports the head and shoulders of a patient. The alternately inflatable cells of the pad for supporting the abdomen of a patient may also be individually deflated to facilitate breathing.

Description

PATIENT SUPPORT
This invention relates to a patient support and in particular to an alternating pressure pad used in prone nursing.
Alternating pressure pads are commonly used in the prevention of decubitus ulcers in bedridden patients, but such patients requiring mechanical ventilation or artificial respiration may need to be nursed in the prone position in order to increase the oxygen level in arterial blood, achieved by liberating the dorsal alveoli from lung oedema fluid.
Prone nursing is a technique in widespread use, with existing systems requiring the patient to be laid face down onto a bed having specific mechanical lifting aids to lift the patient's chest off the bed to provide a space beneath the face and neck for nasal, ventilation and tracheotomy tubes to be inserted and hang freely from the patient. With the patient in this position, a nurse has access to the face and neck areas for nasogastric tubes, endogastric tubes, ventilator hoses and tracheotomoy tubing, as appropriate, and can perform medical procedures such as pulmonary drainage via suction.
However, such existing systems require the movement of a patient to a bed suitably equipped with lifting equipment which have been known in the past to cause facial pressure sores at their points of contact.
The invention seeks to provide an alternating pressure pad capable of supporting a patient in a prone 0 position thereby avoiding the need to move the patient to a different bed and additionally maintaining pressure relief for the patient.
Accordingly, the invention provides a patient support comprising an alternating pressure pad having separate sets of alternately inflatable cells, at least one further inflatable cell provided under the pad, means to support a head of a patient lying thereon, and control means arranged to maintain alternate inflation and deflation of the cells of the pad, to deflate the cells at the head end of the pad and also to inflate the cell(s) provided under the pad in order to raise the level of the chest of a patient supported on the pad.
The deflation of the cells at the head end of the pad provides a space beneath the face and neck of a patient for nasal, ventilation and tracheotomy tubes to be inserted and hang freely. Inflation of the cell under the pad raising the level of the lungs above the rest of the body lowers the abdominal tissue pressure thereby reducing pressure on the diaphragm and allowing greater tidal air volume during artificial respiration. As a result, there is greater perfusion and oxygenation of the dorsal lower lung area reducing accumulation of oedema around the lung and chest area.
Preferably, at least one inflatable cell is provided under the foot end of the pad which when inflated raises the feet of a patient supported on the pad. Preferably the cells under the pad may be inflated laterally to provide rotational therapy for the patient .
Preferably, the pad includes at least a further 0 inflatable cell to support the face and shoulder of a person lying thereon. More preferably, the cell is V- shaped and may be semi-transparent to allow inspection of the face from the side of the pad without movement of the head. The combined action of the deflated head cells, the cells elevating the chest and feet and the V-shaped cell to raise the face and neck provides an optimum position for prone nursing which is difficult to achieve on conventional air beds or pads.
Preferably, the alternately inflatable cells for supporting the abdomen of a patient lying thereon may be individually selectively deflated to facilitate breathing. Preferably a cover extends over and around the pad. Preferably, the control means and means for selectively deflating some of the cells are accessible outside the cover, for ease of operation and reduced risk of contamination of the pad.
An example of the invention will now be described with reference to the accompanying drawings, in which:
Figure 1 shows a schematic representation of a preferred embodiment of the invention; Figure 2 is a schematic cross-sectional representation of the alternating pressure pad in Figure 1;
Figure 3 is a cross-sectional view of a two position valve according to the invention; Figure 4 is a schematic view of an air switch according to the invention;
Referring now to Figure 1, the preferred embodiment comprises an alternating pressure pad 1 including alternately inflatable cells 1', 1''. The cells 1' and 1'' are alternately supplied with air from a compressor 2. The cells 1' and 1'' are supplied air from respective channels 6 and 7. It is envisaged that cells in series of three or more may also be used or that more than one cell in any one series may be inflated alternately. Generally, the cells are shaped as elongate cylinders which in the preferred embodiment extend transversely across the pad.
The cells may be individually formed and restrained onto a base sheet to form the alternating pressure pad or may be made from top and bottom sheet material welded together to define alternately inflatable cells. The cells 1', 1'' are supplied with fluid by channels 6 and 7 which run along the side of the cells. These channels have non return valve connections to a third channel 8 which feeds air continuously to the head cells 3 and the inflatable cells 4 under the head end of the pad via the air switch 12. The inflatable cells 4 are positioned under the alternating cells for supporting the torso of a patient lying thereon, towards the head end, and arranged to inflate individually or together to provide torso height adjustment to enable ventilation access to the patients face. These cells 4 may be "U" shaped to contour around a pneumatic automatic pressure adjuster (not shown) which may be used to maintain an optimum support pressure level . Linked to the cells 4 may be a cell 5 that inflates to provide increased foot clearance. These cells 4 and 5 may also be inflated laterally to provide rotational therapy for the patient.
The first alternating cell 1' or 1'', next to the head cells 3 when deflated, may be converted to a static cell 9 so that constant support keeps the patient in a 0 stable position. In a preferred embodiment, a number of the remaining alternately inflatable cells 1' and 1 ' ' for supporting the torso of a patient may be connected to the feed channels 6 or 7 via two position valves 10. As shown in Figure 3, the valves 10 each comprise a body 20 extending through the individual pad cell 1' and channel 6 supplying air to it. The valve body end also passes through the outer cover 30. The valve body has two components, an inner component 21 inserted into the bore of an outer component 22, openings 23 and 24 are provided in the inner component and complimentary openings 25 and 26 are provided in the outer component with openings 23 and 25 interconnecting the cells 1' with channel 6. Openings 24 and 26 allow for venting of the cell 1' . However, the openings 25 and 26 in the outer component are laterally offset so that in one position the cell may be supplied with air by the respective channel and in the other position the cell may be disconnected from the channel and allowed to deflate without affecting the adjacent cells. Therefore, the valve 10 whilst allowing for individual cell deflation will isolate that cell from the channel 6 or 7 so that air is not lost from the system. The valves 10 also pass through the outer cover and have a knob attached which will indicate the "Vent / Close" positions. As access to operating these valves is on the outside the risk of contaminating the mattress is minimised.
As support for the head has been lost, by the head end cells 3 being deflated, a head support is required to 0 maintain the head in the prone position above the pad 1.
In the preferred embodiment as shown in Figures 1 and 2 , a
SUBSTITUTE SHEET (RULB26) "V" shaped cell 11 may be provided that at its apex supports the head and with its two ends secured under the patients arm pits supports the patient's shoulders and chest . It is possible to use mechanical cantilever type mechanisms with a mask allowing access to the face and throat of the patient to support the head. Another option could be a more complex structure having a fold away design, with storage within the pad. Mounted to the frame could be a pressure reducing pad utilising either air, foam or gel agent whilst enabling access to the face and throat .
In use, the compressor 2 supplies pressurised air to channels 6 and 7 feeding alternately inflatable cells 1' and 1' ' . A rotary valve (not shown) alternates the supply of air to the respective channels 6 and 7. The control of air supply to the rest of the cells is by means of an air switch 12. The air switch 12 comprises two mating faces, one stationary 12a and the other rotatable 12b. The stationary face 12a has an inlet 13 connected to channel 7, an inlet 14 connected to the compressor, outlet 15a to cell 9, outlets 15b and 15c to the cells 4 and 5 and outlet 15d to the head cells 3. The other mating face 12b has arced grooves 16a and 16b that are configured to feed air to the different outlets 15a to 15d and cutaway sections 17a and 17b to exhaust the air from outlets 15a to 15b depending on its position with respect to the stationary face 12a.
As shown in Figure 4A, in position 1 the grooved quadrant 16a connects the inlet 14 to outlet 15d to supply 0 continuous air to the head cells 3 and also groove 16b connects inlet 13 to outlet 15a to supply alternating air
SUBSTITUTE SHEET (RULE:26) to cell 9. As the switch is moved to position 2 (Figure 4B) , the quadrant groove 16a cannot supply air to outlet 15d However, cutaway section 17a is now in position over outlet 15d allowing the head cells 3 to deflate. Groove 16b connects inlet 14 to outlet 15a to supply static air to cell 9.
As the air switch is moved to position 3 (Figure 4C) , the head cells are still in exhaust mode, cell 9 is still connected to inlet 14 and the quadrant groove 16a is only feeding outlet 15c to supply air to cells 4 and 5. Moving the air switch to position 4 (Figure 4D) , the quadrant groove 16a is now in position to supply air to outlets 15b and 15c to inflate cells 4a, 4b and 5 at the head and foot ends respectively under the pad, the head cells are still in exhaust mode, and cell 9 is still connected to inlet 14 thereby providing the final prone position.
When returning back through the switch settings to position 1 the alternating pad is converted back to its conventional pressure relieving alternating pad mode and cells 4a, 4b and 5 exhaust via cutaway section 17b.

Claims

Claims ;
1. Patient support comprising an alternating pressure pad having separate sets of alternately inflatable cells, at least one further inflatable cell provided under the pad, means to support the head of a patient lying thereon and control means arranged to maintain alternate inflation and deflation of the cells of the pad, to deflate the cells at the head end of the pad and also to inflate the cell (s) provided under the pad in order to raise the level of the chest of a patient supported on the pad.
2. A patient support as claimed in claim 1, wherein at least one inflatable cell is provided under the foot end of the pad, which when inflated raises the feet of a patient supported on the pad.
3. A patient support as claimed in claim 1 or 2 , wherein the cells under the pad may be inflated laterally to provide rotational therapy for the patient.
4. A patient support as claimed in any preceding claim, wherein a further inflatable cell is provided to support the face and shoulder of a patient lying thereon.
5. A patient support as claimed in claim 5, wherein the cell is V-shaped and may be semi-transparent.
6. A patient support as claimed in any preceding claim, wherein the alternately inflatable cells of the pad for supporting the abdomen of a patient lying thereon may be individually selectively deflated to facilitate breathing.
7. A pressure support as claimed in any preceding claim, wherein a cover extends over and around the pad.
8. A pressure support as claimed in claim 7, wherein the control means and means for selectively deflating some of the cells are accessible outside the cover, for ease of operation and reduced risk of contamination of the pad.
EP98946561A 1997-10-07 1998-10-07 Patient support Expired - Lifetime EP0942704B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9721116.3A GB9721116D0 (en) 1997-10-07 1997-10-07 Prone nursing pad
GB9721116 1997-10-07
PCT/GB1998/002988 WO1999017703A1 (en) 1997-10-07 1998-10-07 Patient support

Publications (2)

Publication Number Publication Date
EP0942704A1 true EP0942704A1 (en) 1999-09-22
EP0942704B1 EP0942704B1 (en) 2003-04-02

Family

ID=10820076

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98946561A Expired - Lifetime EP0942704B1 (en) 1997-10-07 1998-10-07 Patient support

Country Status (8)

Country Link
EP (1) EP0942704B1 (en)
JP (1) JP4131522B2 (en)
AU (1) AU728311B2 (en)
DE (1) DE69812879T2 (en)
DK (1) DK0942704T3 (en)
ES (1) ES2196605T3 (en)
GB (2) GB9721116D0 (en)
WO (1) WO1999017703A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115068233A (en) * 2021-02-25 2022-09-20 雃博股份有限公司 Air cushion bed and control method thereof

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2331043B1 (en) 2008-03-31 2010-10-01 Barbara Roman Alemañ PLASTER MORTAR WITH EXPANDED AND ADDITIVE VERMICULITE, AND PROCEDURE FOR OBTAINING IT.
US10987264B2 (en) * 2017-07-18 2021-04-27 Hill-Rom Services Pte. Ltd. Combination respiratory therapy and mattress functionality system integrated into a patient bed
CN110051484A (en) * 2019-04-27 2019-07-26 宋淳 Prone-position ventilation position management pad
US20220265060A1 (en) * 2021-02-25 2022-08-25 Apex Medical Corp. Air mattress and method of controlling the same

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE840371A (en) * 1976-04-02 1976-08-02 BEACH CUSHION
SE409653B (en) * 1977-04-18 1979-09-03 Kaufmann Irene AS A LAYING BASE SERVING AID DEVICE
SE465702B (en) * 1989-01-03 1991-10-21 Irene Kaufmann SUBSTANCES WITH INDIVIDUALLY VALVE FILLABLE EVACUABLE FLEXIBLE CELL BODIES
GB2312162B (en) * 1993-10-19 1998-01-07 Huntleigh Technology Plc Alternating pressure pad
US5586346A (en) * 1994-02-15 1996-12-24 Support Systems, International Method and apparatus for supporting and for supplying therapy to a patient

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9917703A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115068233A (en) * 2021-02-25 2022-09-20 雃博股份有限公司 Air cushion bed and control method thereof
CN115068233B (en) * 2021-02-25 2023-11-24 雃博股份有限公司 Air cushion bed and control method thereof

Also Published As

Publication number Publication date
JP2001507269A (en) 2001-06-05
DK0942704T3 (en) 2003-07-28
WO1999017703A1 (en) 1999-04-15
AU728311B2 (en) 2001-01-04
GB2330526A8 (en) 1999-07-26
GB9821815D0 (en) 1998-12-02
JP4131522B2 (en) 2008-08-13
GB2330526B (en) 1999-12-08
ES2196605T3 (en) 2003-12-16
DE69812879T2 (en) 2004-01-22
GB2330526A (en) 1999-04-28
EP0942704B1 (en) 2003-04-02
GB9721116D0 (en) 1997-12-03
DE69812879D1 (en) 2003-05-08
AU9356798A (en) 1999-04-27

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