The present invention is concerned with a unit for providing assistance and/or services to a patient on a patient support apparatus such as a bed (whether a hospital bed or a long term care (LTC) bed), or chair. Patients (and/or their caregivers) in such environments require access to a number of different functionalities for comfort, entertainment and/or care. For example, the patient in a LTC bed and/or his caregiver is likely to require access to some if not all of the following near the bed:
Most of these functionalities are provided by separate units located in the room near the bed. A long term care (LTC) or hospital bed may be surrounded by at least the following separate units: a wall-mounted screen, a patient lifting cradle, a zimmer frame or other walking and bed egress aid, a drug storage and dispensing trolley, an IV (intravenous) pole and a bedside cabinet for the patient to store his/her possessions. This takes up significant amounts of space and therefore has clear cost, convenience and accessibility implications. Space is at a premium and often expensive in a hospital or other care facility; the provision of a number of different units takes up space and increases cost as well as making it awkward for a care giver to access the patient and clean around the various units.
The inventors of the subject application are the first to appreciate that such an arrangement allows one to use the height adjustment mechanisms associated with modern patient support apparatus to transfer a patient using a simple and inexpensive patient transfer mechanism which takes up a relatively small amount of space near a patient support apparatus such as a hospital bed or a chair and also allows one to provide ancillary or desirable other patient assistance and/or services.
The present invention in a second aspect provides patient service unit for providing assistance and/or services to a patient in or on a patient support apparatus, the unit including: a first substantially vertical shaft having a vertical axis and being fixed or fixable in position relative to the patient support apparatus, a shaft fixing for fixing the first shaft in position relative to the patient support apparatus; a second substantially vertical tubular shaft arranged around, coupled to and moveable in a vertical direction relative to, the first shaft, a height adjustment mechanism element connecting the first and second shafts for controllably moving the second shaft relative to the first shaft, and wherein the second tubular shaft includes at least one mounting comprising a first curved bearing surface, the first bearing surface supporting a second bearing surface moveable relative to the first bearing surface to pivot about the vertical axis of the first shaft, the second bearing surface being coupled to a patient service element for providing assistance and/or services to a patient, whereby the patient service element is pivotable about the first and second shafts, and moveable in a vertical direction relative to the first shaft.
The inventors of the subject invention are the first to appreciate that the arrangement of two shafts with one controllably moveable in a vertical direction relative to the other fixed shaft, together with the provision of the at least one mounting on the described bearing arrangement allows one to provide a unit which can support and provide a number of different necessary or desirable patient or caregiver functionalities in a manner which takes up a lower amount of space and at reduced cost.
In an embodiment, the bearing surfaces are substantially circular and the second bearing surface extends around the first bearing surface. This results in an effective, easy to make bearing.
In an embodiment, the first bearing surface is a layer or coating on the surface of the second shaft and the second bearing surface is at least part of the internal circumferential surface of a curved member surrounding or extending partially around the second shaft.
In an embodiment at least part of a bearing surface is made from a low friction plastics material such as polyoxymethylene (POM or Acetal).
In an embodiment, the unit comprises a plurality of mountings each supporting apparatus for providing assistance and/or services. This allows a single unit to provide different functionalities and a single actuation to control the height of a number of elements. Such a unit takes up less space and is likely to be cheaper than the prior art systems with entirely separate units.
In an embodiment, the unit comprises first and second shafts each having a substantially circular horizontal cross-section.
In an embodiment, the second shaft is arranged outside the first shaft, the height adjustment mechanism is a linear actuator with a first end fixed relative to the first shaft and having the end of a controllably moveable rod or other linearly extendable element fixed to the second shaft so as to controllably move the second shaft relative to the first.
In an embodiment, the height adjustment mechanism is a gas spring. This makes for an inexpensive and effective height adjustment mechanism.
In an embodiment, the first and second shafts are each hollow tubes with a circular cross-section, the second shaft is arranged outside the first shaft and is slidable thereover, and wherein the second shaft includes an internal height adjustment fixing for engagement and movement with the moveable portion of the height adjustment mechanism such that movement of the height adjustment mechanism moves the internal height adjustment fixing and hence the second shaft relative to the first shaft.
In an embodiment, the internal height adjustment fixing is supported on substantially horizontal arms coupled to the second shaft and passing through substantially vertical slots in the first shaft.
In an embodiment, the unit includes a fixing plate for fixing the bottom of the first shaft to the floor or ground. This allows the space under and around the unit (which may have a plurality of functionalities) to be easily cleared.
In an embodiment, the element or elements for providing assistance and/or services includes or comprises one or more of a patient transporting or lifting system, a patient or care-giver screen, an over bed table, an egress bar for aiding egress from or movement on the patient support apparatus, a bedside cabinet, a drawer unit, an intravenous drip support pole and/or an electrical power supply socket.
In an embodiment, the apparatus for providing assistance and/or services includes a patient lifting system fixed to the top of the first shaft and pivotable about the first shaft.
In an embodiment, the unit includes a storage drawer mounted on one or more respective bearings mounted on the second shaft, and a drawer unit enclosure mounted around the storage drawer and fixed in position relative to the second shaft.
In an embodiment, the unit includes a patient transfer arm for supporting a sling bar and associated sling lift, the patient transfer arm being connected to the first shaft and arranged for rotation with or about the first shaft.
In an embodiment, the patient transfer arm is connected to the top or upper portion of the first shaft and rotatable thereabout.
In an embodiment the unit is a bed side unit or item of furniture.
Embodiments of the invention will now be described by way of non-limiting example with reference to the attached figures, in which:
The terms "horizontal", "vertical", "top" and "bottom" and other terms used to describe the orientation and/or relative positions of elements of the unit refer to the unit when it is arranged for use in a patient care environment.
The expression "providing assistance and/or services" encompasses providing a functionality or service of use to a patient or caregiver. This includes, for example, providing storage space (e.g. using a drawer unit), providing support (e.g. on egress bar), providing an eating or working surface (e.g. an overbed table) as well as providing access to medical or patient care equipment and services (e.g. an IV pole or patient transfer system).
Referring to
The unit may be a bedside or chair side unit. The unit is suitable for location alongside a patient and/or caregiver in any patient environment in which it is desirable to provide functionalities to a patient or caregiver at different heights and/or positions
In
The unit 1 includes a first vertical shaft 11 fixed to the floor by a fixing plate 12. The fixing plate may be screwed to the floor. In alternative embodiments, the vertical shaft may be fixed in position by being fixed to the ceiling and/or the wall. If fixed to the wall, an additional horizontal fixing element would be required.
The patient transfer arm 9 is rotatably mounted to the top of the first shaft such that the arm 9 and its associated sling bar 10 and lift sling 13 may be rotated together with a patient 6 supported in the lift sling 13. A patient is transferred between the bed and chair using the sling lift of the unit as follows.
The lift sling is arranged around the patient as he or she is in the bed or chair with the respective bed or chair being in a raised position such that the sling lift can then be mounted on the sling bar without the sling lift being in tension and significant effort being necessary to lift the patient into position. Once the patient is in the sling lift and this is mounted on the sling bar, the bed or chair on which the patient is supported is lowered so that the weight of the patient is gradually taken up by the sling bar and associated patient transfer arm. Once the bed or chair from which the patient is being transferred is sufficiently clear of the patient in the sling lift, a caregiver can easily pivot the sling lift away from the respective bed or chair until the patient is over the lowered destination bed or chair he or she is being transferred to. Once the destination chair is arranged in position under the sling lift, that bed or chair may be raised into position until it takes the patient weight and the sling lift may then be removed from the patient. This arrangement makes use of the height change functionality of the bed and chair and does not require additional height change functionality on the patient transfer unit itself.
Referring to
Referring to
A plurality of elements which may be necessary to aid or supply services to a patient are arranged on the unit. Referring to
The drawer cabinet 25 is fixed to the second shaft. The top of the drawer cabinet is fixed to the walls of the second shaft and its base is supported on and fixed to, a drawer cabinet support arm 29 which projects from the bottom of the second shaft. The body of the drawer cabinet 25 could be of plastics or wood, and the cabinet support arm 29 of steel. The drawer cabinet is arranged so as to not rotate relative to the second shaft but only move with it as it is raised and lowered by movement of the height adjustment mechanism 21. The two drawers 26 are rotatably connected to the second shaft 16. Each drawer unit includes a tubular metal element 32 with a circular cross-section and which surrounds and is supported by the second shaft 16 (which also has a circular cross-section).
A pair of metal ring elements 15 are fixed to the second shaft and define upper 30 and lower 31 fixings for the drawer unit 26 to thereby hold it in position relative to the second shaft. Circular low friction bearing elements 33 extending around and fixed to the top and bottom edges of tubular elements 33 and having a substantially L-shaped cross-section contact the second shaft 16 and support rings 15 to define the bearing contact surface for the bearing between the second shaft 16 and the tubular element 33. At least part of the bearing surface 33 on the drawer unit which engages the outer bearing surface of the second shaft is made from a low friction material such as acetal (polyoxymethylene).
The egress bar 27 is a steel bar or rod with a plastics coating and, at its end proximal the second shaft, includes a tubular metal element 32 similar to that described above for the drawers 26. The tubular metal element is rotatable relative to the second shaft and rotatably connected to the second shaft and hence the unit in the same manner described above for the drawers 26.
The egress bar 27 is arranged so as to be slightly inclined relative to the vertical shafts 11,16. This is so as to help the hand of a patient using it from, for example, a position in the bed 2 adjacent the unit 1 to have his or her hand in a position with a straight wrist.
The egress bar 27 also includes a mechanism (not shown) for locking it in one or more possible positions relative to the shaft 16 around which it rotates.
The over bed table 28 includes a steel support element 34 which includes at its end proximal the second shaft a tubular metal element 32 similar to those described above for the drawers 26 and egress bar 27. It is rotatably connected in the same way to the second shaft 16. The overbed table support element 34 supports on its upper surface an overbed table surface 38. The over bed table is in two parts connected by an overbed table pivot 35 so that the table may be unfolded when in use.
The drawer cabinet box 25, drawers 26, egress bar 27 and over bed table 28 all move up and down and relative to the first shaft (and the floor on which it is fixed) as the height adjustment mechanism 21 moves the second shaft 16 up and down. This allows a patient or caregiver to control the height of these elements to reflect the height of an adjacent bed 2 and/or chair 3 as that is changed. When a patient or caregiver wishes to, for example, access a drawer 26 the second shaft 16 is raised or lowered to a convenient height before the drawer 26 is rotated out from the cabinet box 25 (which is fixed relative to the second shaft 16) to allow access to the drawer 26. Similarly if the patient or caregiver requires the egress bar 27 to help the patient move him or herself, the height adjustment mechanism 21 is used to move it to a convenient height from where it is pivoted into position. The egress bar 27 may include a locking arrangement to lock it into position when it has been rotated into a desirable position. The overbed table 28 is moved into position in a similar manner, with the height adjustment mechanism 21 raising it into a desired height before it is then rotated out and then unfolded about the over bed pivot 25.
This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.