Height adjustable change table

Abstract

A change table, comprising: a frame including a base and a pair of upright-extending side posts located at a proximal end of the base and spaced from one another; at least one height adjustable leg op

Description

HEIGHT ADJUSTABLE CHANGE TABLETECHNICAL FIELD

[0001] The invention relates to a change table, and in particular to a height-adjustable change table.BACKGROUND

[0002] A change table is a small elevated table used for changing children out of soiled diapers or nappies and into clean underwear. Typically, change tables are used from a child's birth until around three years of age. Conventional change tables comprise a small padded base, usually rectangular in shape, elevated above ground level such that an adult may reach a child on the change table without bending. Known change tables are simple flat platforms, which allow easy access to the child, but provide no means for retaining the child on the table safely.

[0003] Change tables are particularly useful in changing children, as they provide adequate access to the child by a parent or caretaker. However, said parent or caretaker must pick up the child to place them onto, and back off of, the change table. In home settings, this can result in injury, specifically back injury, to a parent or caretaker from repeatedly reaching down to pick up the child. The risk of injury also applies in a professional settings, such as at a hospital or childcare centre. In professional settings, however, there is additional considerations with regard to occupational health and safety laws and the heightening of risks associated with heavily repeated actions and with regard to the safety of children in the care of the professional. Some jurisdictions have strict health and safety regulations regarding equipment and actions relating to the care of children. Accordingly, the practice of repeatedly lifting a child up to a conventional change table may be in contravention of occupational health and safety laws (or at least obligations), and any equipment used to assist in the changing of a child must meet various regulations.

[0004] Conventional change tables do not typically come equipped with protection against falling due to a need to access the child when they are placed on the change table. Whilst this allows the conventional change table to perform its function, it additionally adds an inherent risk of a child falling, climbing or otherwise removing themselves from the table in an unsafe manner.

[0005] The applicant has determined that it would be advantageous to provide an improved change table and associated method of use, which in the preferred embodiments, seek to at least in part alleviate the above-identified problems, or to offer the public, including parents, caretakers and professionals, a useful alternative.SUMMARY OF THE INVENTION

[0006] According to a first aspect of the present invention, there is provided a change table, comprising: a frame including a base and a pair of upright-extending side posts located at a proximal end of the base and spaced from one another; a frame including a base and a pair of upright-extending side posts located at a proximal end of the base and spaced from each other; at least one height adjustable leg operatively connected to the frame; a prime mover configured to effect the height of the leg so as to adjust the base of the change table between a raised position and a lowered position; and a barrier positioned in between the pair of side posts, wherein the barrier is configured to substantially extend between the side posts in a closed state.

[0007] In some embodiments embodiments, the barrier comprises a pair of hinged screens positioned at the proximal end of the base. The barrier may be configured to hingedly rotate into an open state so to allow unimpeded access to the base. The barrier may comprise a substantially transparent material. The material may be polyvinyl chloride or acrylic. The barrier may be biased to the open state, and retained in the closed state by one or more latching member(s) that couple with the or each of the side posts. The or each of the side posts includes a catch configured to retain the barrier when extended between the side posts.

[0008] In some embodiments, the height adjustable leg is a telescopic leg and the table comprises four such adjustable legs for supporting the frame. The prime mover may comprise a linear actuator configured to adjust the height of the leg. The prime mover may be configured to prevent the table from raising further than a predetermined height. The prime mover may be configured to be operable only when said barrier is in a closed state.

[0009] In some embodiments, the change table comprises a sensor configured to detect a position of the barrier, the sensor preventing operation of the prime mover when the barrier is not in the closed state. The change table may comprise a sensor configured to detect operation of the prime mover, the sensor preventing hinged rotation of the barrier into an open state when the prime mover is operated.

[0010] In some embodiments, the base is surrounded by a plurality of right-extending posts.

[0011] In some embodiments, the / each leg includes a wheel disposed at an end opposite said connection to the frame for moving the change table. The / each wheel may be lockable to prevent the change table from moving.

[0012] In some embodiments, the change table further comprises a skirt which surrounds the base and extends downwardly therefrom to prevent access underneath the base. The skirt may be a height adjustable skirt and may adjust in height relative the / each leg.

[0013] According to a second aspect of the present invention, there is provided a method of attending to a user by a caretaker using a change table in accordance with the first aspect, the method comprising the steps of: opening the barrier into an open state when the base is in the lowered position so that the user may embark onto the base; closing the barrier into a closer state so as to allow safe operation of the change table; operating the prime mover to adjust the height of the base to the raised position; and opening the barrier into an open state when in the base is in the raised position to attend to the user.

[0014] In one embodiment, the change table further comprises a sensor for sensing a position of the barrier, and the method includes preventing operation of the prime mover if the sensor detects the barrier to be in the open state.

[0015] In another embodiment, the change table further comprises a sensor for sensing operation of the prime mover, and the method includes preventing any movement of the barrier into the open state if the sensor detects ongoing operation of the prime mover.

[0016] Also disclosed herein is a change table, comprising: a frame including a base and a pair of upright-extending side posts located at a proximal end of the base and spaced from each other; at least one height adjustable leg operatively connected to the frame; a prime mover configured to effect the height of the leg so as to adjust the base of the change table between a raised position and a lowered position; and a barrier positioned in between the pair of side posts, wherein the barrier is configured to substantially extend between the side posts in a deployed state.

[0017] In some embodiments, the barrier is a retractable screen, which is positioned at the proximal end of the base.

[0018] In some embodiments, the barrier is configured to retract to or below the base when in a stowed state so as to allow unimpeded access to the base.

[0019] In some embodiments, the barrier comprises a substantially transparent material.

[0020] In some embodiments, the material is polyvinyl chloride.

[0021] In some embodiments, the barrier is biased to the stowed state, and retainable in the deployed state by one or more latching member(s) that couple with the / each of the side posts.

[0022] In some embodiments, the / each of the side posts includes a catch configured to retain the barrier when extended between the side posts.

[0023] In some embodiments, the height adjustable leg is a telescopic leg and wherein the table comprises two such adjustable legs for supporting the frame.

[0024] In some embodiments, the prime mover comprises a linear actuator configured to adjust the height of the leg.

[0025] In some embodiments, the prime mover is configured to prevent the table from raising further than a predetermined height.

[0026] In some embodiments, the prime mover is configured to be operable only when said barrier is in a deployed state.

[0027] In some embodiments, the change table comprises a sensor configured to detect a position of the barrier, the sensor preventing operation of the prime mover when the barrier is not in the deployed state.

[0028] In some embodiments, the change table comprises a sensor configured to detect operation of the prime mover, the sensor preventing deployment of the barrier when the prime mover is operated.

[0029] In some embodiments, the base is surrounded by a plurality of right-extending posts.

[0030] Also disclosed herein is a method of attending to a child by a caretaker using a change table as described above, the method comprising the steps of: retracting the barrier when the base is in the lowered position so that the child may embark onto the base; extending the barrier between the upright posts into a deployed state so as to allow safe operation of the change table; operating the prime mover to adjust the height of the base to the raised position; and retracting the barrier into a stowed state when the base is in the raised position to attend to the child.

[0031] In one embodiment, the method further comprises the steps of: extending the barrier between the upright posts into the deployed state, when the base is in the raised position, once the child has been attended to; operating the prime mover to adjust the height of the base to the lowered position; and retracting the barrier into a stowed state so that the child may disembark from the base of the change table.

[0032] In another embodiment, the method further comprises a sensor for sensing a position of the barrier, the method including preventing operation of the prime mover if the sensor detects the barrier to be in the stowed state.

[0033] In yet another embodiment, the method further comprises a sensor for sensing operation of the prime mover, the method including preventing any retraction of the barrier into the stowed state if the sensor detects ongoing operation of the prime mover.

[0034] While components of the apparatus will be described below for use in combination with each other in the preferred embodiments of the present invention, it is to be understood by a skilled person that some aspects of the present invention are equally suitable to be used interchangeably between one or more embodiments of the present invention and / or suitable for use as standalone inventions that can be individually incorporated into other change tables or bed or cots not described herein.

[0035] The word “about” or “approximately” when used in relation to a stated reference point for a quality, level, value, number, frequency, percentage, dimension, location, size, amount, weight or length may be understood to indicate that the reference point is capable of variation, and that the term may encompass proximal qualities on either side of the reference point.

[0036] As used herein, the words "substantially" and "generally" may be used merely to indicate an intention that the term it qualifies should not be read too literally and that the word could mean “sufficiently”, “mostly” or "near enough” for the patentee's purposes.BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The invention will now be described, by way of non-limiting example only, with reference to the accompanying drawings, in which:

[0038] Figure 1 is a perspective view of a change table in a position between a lowered and raised position, in accordance with an embodiment of the present invention, wherein a barrier is in a retracted position;

[0039] Figure 2 is a perspective view of a change table in a raised position, in accordance with the embodiment shown in Figure 1 , wherein the barrier is in a stowed state;

[0040] Figure 3 is a perspective view of a change table in a position between a lowered and raised position, in accordance with the embodiment shown in Figure 1 , wherein the barrier is in a deployed state;

[0041] Figure 4 is a perspective view of a change table in a raised position, in accordance with the embodiment shown in Figure 1 , wherein the barrier is in the deployed state;

[0042] Figure 5 is a front view of a change table in a lowered position, in accordance with the embodiment shown in Figure 1 , wherein the barrier is in the stowed state;

[0043] Figure 6 is a front view of a change table in a raised position, in accordance with the embodiment shown in Figure 1 , wherein the barrier is in the deployed state;

[0044] Figure 7 is a flowchart schematically illustrating a method of using the change table shown in Figure 1 .

[0045] Figure 8 is a perspective view drawing of a change table in accordance with another embodiment of the present invention, wherein the table is raised and the barrier is open;

[0046] Figure 9 is perspective view drawing of a change table in a lowered position in accordance with the embodiment shown in Figure 7, wherein the table is raised and the barrier is closed;

[0047] Figure 10 is a perspective view drawing of a change table in a lowered position in accordance with the embodiment shown in Figure 7, wherein the table is lowered and the barrier is open;

[0048] Figure 11 is a perspective view drawing of a change table in a raised position, in accordance with the embodiment shown in Figure 7, wherein the table is lowered and the barrier is closed;

[0049] Figure 12 is a front view drawing of the change table shown in Figure 11 ; and

[0050] Figure 13 is a flowchart schematically illustrating a method of using the change table shown in Figure 7, in accordance with an embodiment of the present invention.DETAILED DESCRIPTION

[0051] The present invention relates to a change table 100 having a height adjustable base 11 or platform on which a change area 13 is located. The table being configured with safety barrier means 18 which allow access to the change area by users, such as a caregiver and / or a child, before and after adjustments are made to the height of the table 100. It is to be understood that, whilst the invention has been described in relation to a change table, it may also beadvantageously adapted for use in other applications such as height adjustable beds, cots or cribs, without departing from the invention.

[0052] While reference is made, in the following description, to the change table being used with / for a user, child or patient, it is understood that the change table 100 disclosed herein should not be limited to such a preferment, and that the change table may additionally be suitable for other ages of person, including adults, and / or for animals. In particular, it is contemplated that the change table disclosed is particularly useful for children and for adults such as those with a disability or impairment. Accordingly, reference to children or child in this description should be taken to refer to any suitable patient or user of the change table.

[0053] Embodiments of the invention will now be described with respect to Figures 1 to 12. In the description and drawings, in which the same reference numerals have been used to denote and refer to corresponding features of the embodiments.

[0054] Figures 1 to 6 show a preferred embodiment of the invention, in the form of a change table 100 having a frame 10 which comprises the base 11 to which a height adjustment mechanism 16 is affixed. The base 11 provides the structural base in the form of a platform to which additional components of the change table 100 are attached and / or supported. According to a preferred embodiment, the base 11 is of a substantially rectangular or square shape having a narrower width spanning across the base and a longer length in a direction perpendicular to the width, though other shapes and configurations may also be suitable without departing from the invention. In particular, the change table 100 shown in the Figures has a base 11 with a width of about 650 mm and a length of about 720 mm. The frame 10 further comprises a pair of uprightextending side posts 14 located at a proximal end of the base 11 (the end that is closer to the users during operation). In the preferred embodiment, the side posts 14 are spaced from each other and positioned substantially at the proximal front corners of the base 11 . The frame 10 can be further provided with side and back wall member(s) 15 which substantially enclose the base 11 and thereby reducing the risk of a subject inadvertently falling off of the change area 13 of the table 100. In the preferred embodiment, the wall member(s) 15 projects from, and extends around the perimeter of, the base 11 , excluding the area between which the side posts 14 are spaced.

[0055] The table 100 comprises at least one height adjustable leg 17 which is operatively connected or coupled to the frame 10. The adjustable leg 17 can be in the form of a telescopic leg. In the preferred embodiment, a pair of such height adjustable legs 17 are provided, but other configurations having more legs, for example three, four or more legs, may also be suitable. The height adjustable leg(s) 17 are connected to the frame 10, preferably to the base 11 , such that any height adjustments of the leg(s) 17 correspondingly affects the height of the base 11 , and inturn, the height / elevation of the change area 13. The adjustable leg(s) 17 are configured to be movable by a prime mover (described below) so that moving the leg(s) 17 shifts the frame 10 (and as a consequence, the change table 100) between a lowered position, in which the base 11 and the change area 13 is closer to the ground for embarking by a child, and a raised position, in which the base 11 and the change area 13 is elevated for convenient access by a caregiver.

[0056] The change table 100 further comprises a child safety barrier 18 which is located at the proximal end of the base and is configured to substantially extend, in a deployed state, between the pair of side posts 14 so as to act as a barrier to entry and exit of the change area 13. In the preferred embodiment, the barrier 18 is in the form of a screen which is retractable from and into a cylindrical roller 20. The barrier 18 is configured to be movable between a stowed state, in which the screen is retracted back to its housing, and the deployed state, in which the screen is opened to extend between the pair of upright posts 14. In one embodiment, the barrier is configured to retract to or below the base 11 and / or the change area 13 when it is in the stowed state so as to allow unimpeded access to the base 11 and / or the change area 13. This is an important feature as conventional tables do not allow a barrier to be completely withdrawn while the barrier 18 of the present invention allows easy access by a child who could embark or disembark the change table without external assistance, when the base 11 or the change area 13 of the change table 100 is in the lowered position. In some embodiments, the barrier 18 is made from a substantially transparent material so that a user could see straight through the barrier 18 into the change table 100. Polyvinyl chloride has been identified as a suitable material for the barrier 18, but other materials may also be used without departing from the invention.

[0057] The stowed state of the barrier 18 refers to removing the barrier 18 from between the upright posts 14 sufficient enough so as to allow unimpeded access to the base 11 and / or the change area 13. The barrier 18, in the stowed state, does not necessarily need to be fully withdrawn or packed away, but only to the extent that it will not impede access to a user (e.g. a child) for embarking and disembarking the base 11 or change area 13 when the change table 100 is in the lowered position, and not impede access to a caregiver for attending to a child on the base 11 or change area 13 when the change table 100 is in the raised position.

[0058] In some embodiments, the base 11 and the leg(s) 17 are arranged so that a gap is provided between the base 11 and the ground during use when the change table is in the lowered position so as to reduce the likelihood of crushing any objects beneath the table 100.

[0059] The frame 10, including the base 11 , can be constructed from any suitably strong and rigid material, such as for example a wood or wood-based material, but is preferably made from steel or aluminium. It should be understood that the frame 10 and base 11 may be of any suitableshape, including a rectangle, a square, a shape having a different number of sides or of a circular or oval configuration. Preferably, the base 11 is shaped such that its depth is greater than its width. For example, the distance between which the side posts 14 are spaced may be the smaller of the two external perimeter distances provided by a rectangular base 11. Preferably the frame 10 and base 11 are constructed to have a safe working load (SWL) of about 80 kilograms. It is understood, however, that the frame 10 and base 11 , where used for attending to children, may have a smaller SWL, or, where the frame 10 and base 11 are used for attending to adults, may have a larger SWL.

[0060] In some configurations, the or each wall member 15 need not be straight, and may instead be curved or partially curved so as to follow the perimeter of the base 11 . The or each wall member 15 is preferably made from a rigid plastic, metal, wood, or a combination thereof. In the embodiment shown in Figures 1 to4, the wall members 15 comprise only minimal internal features and are otherwise empty. Alternative arrangements include the wall member 15 being filled with a transparent safety glass, acrylic, polyvinyl chloride or the like.

[0061] Figure 1 shows the change table 100, and the base 11 , in the lowered position, while Figure 2 shows the change table 100, and the base 11 , in the raised position. In Figures 1 and 2, the barrier 18, which is in the form of a screen, is substantially retracted into a stowed state inside the retractable roller 20 located in the front (proximal) end of the base 11. The change table 100 is typically provided with a mattress 12 arranged above the base 11 to designate the change area 13. In some configurations, the mattress 12 comprises a soft upper facing surface, preferably of a foam material, and a liquid resistant covering, such as for example leather, vinyl or plastic. The mattress 12 may alternatively comprise any such material or combination of materials as is consistent with conventional mattresses or change tables. The mattress 12 is arranged in accordance to the shape of base 11 , such that, in use, a child lying atop the mattress 12 would be positioned such that their head or feet would be pointed towards the area between the side posts 14.

[0062] Figures 3 and 4 show the same lowered and raised positions of Figures 1 and 2, respectively, but also show the barrier 18 in the deployed state in which the barrier substantially extends between the upright side posts 14. In some embodiments, in the deployed state, the barrier 18 does not have to fully extend between the side posts 14, but extended enough to prevent a child or subject in the change area 13 from inadvertently falling off the change table 100. The barrier 18 can be in the form of a clear screen, which is flexible. The screen may, however, be positioned elsewhere, such as, for example, along a longitudinal edge of an upright extending side post 14, or bearing across each side post 14 at the distal ends of their upright extensions. In a preferred embodiment, the screen 18 is a clear screen, meaning that it is substantiallytransparent, and is made from polyvinyl chloride. A person skilled in the art would understand, however, that the screen need not be a clear or substantially transparent screen, and that any suitably flexible and resilient material may be used for the screen, such as for example other polymeric materials, vinyl, or a fabric. The stowed / retracted positioned being the position wherein the screen is not providing a barrier to entry and exit the change table 100, and the deployed / open position being the positioned wherein the screen is providing a barrier to entry and exit the change table 100. In the deployed state, it is possible to have the screen half extended or partially extended, as long as the screen is performing the function of a barrier to prevent a subject from falling out of the change table 100.

[0063] In one embodiment, the barrier 18 is operable between either states by winding around the roller 20, to which one end of the barrier 18 is attached. As the roller 20 is rotated axially, the screen 18 is wound therearound. In the deployed state, an edge of the barrier 18 is received by a corresponding track provided in the respective side post 14 such that the barrier 18 aligns with the surrounding side post 14. Whilst this embodiment includes only one barrier 18 and associated roller 20 thereof, it is understood that variations, such multiple barriers side-by-side and corresponding side-by-side rollers 20, are possible without deviating from the present invention.

[0064] The barrier 18 is retained in placed in the deployed state by at least one latching member which couples to a side post 14 of the change table 100. In some embodiments, the latching member comprises a latch arm 22 positioned at or about a distal end of the barrier 18, being the end opposite the end coupled to the roller 20. The latch arm 22 is configured to retainingly engage a corresponding latch plate or catch 23 positioned abutting an outer edge of a respective side post 14. It is understood that additional latching members could be employed without departure from the present invention, and the change table 100 could comprise latch members positioned to abut each rather than a side post 14. Additionally, it is understood that said latch arm 22 and latch plate 23 may be provided in alternate positions without affecting the function of the latch arm 22 and latch plate 23, being to retain the barrier 18. In said retracted position, the barrier 18 is wound such that its distal end substantially abuts or sits below the uppermost surface of the base member 11 .

[0065] In some configurations the barrier roller 20 can be mounted to an inner surface of the frame 10, being invisible from an outer perspective of the change table 100 at any of the stowed state, deployed state or a position therebetween. The roller 20 comprises a bias roller such that the barrier 18 is biased toward the retracted position. The roller 20 may comprise an electric motor ("roller motor") configured to rotate the roller 20. Similarly, the latch arm 22 may comprise anactuator for electrically engaging the corresponding latch plate 23 for retaining the barrier 18 in the deployed state.

[0066] Turning now to Figures 5 and 6, the change table 100 further comprises a prime mover 16 configured to actuate the height adjustable leg(s) 17 between extended and retracted positions, thereby altering the height of the change table 100 between vertically raised and lowered positions, respectively. The prime mover 16 can be in the form of an electric motor driving a linear actuator operatively coupled to the adjustable leg(s) 17. The or each adjustable leg 17 may be provided with a like prime mover 16 for height adjustment. In the embodiment shown in Figures 5 and 6, the prime mover 16 which functions as the lifting member is mounted within each adjustable leg 17. Upon actuation of the prime mover 16, the lifting member extends the height- adjustable leg 16 substantially vertically to raise or lower the base 11 relative to the ground. It should be noted that, as the base 11 is raised, the mattress 12 and the change area 13, side posts 14, and wall members 15 are also raised with the frame 10 relatively due to their connection with the base 11. In order to allow the change table 100 to provide means by which a child may enter the change area 13 from a ground level, the lifting member is preferably a telescoping linear actuator.

[0067] In the preferred embodiment, the change table 100 is dimensioned such that, at the lowered position (see Figures 1 , 3 and 5), the distance between the base 11 and the ground is about 30 cm, and more preferably 20cm. And in the raised position (see Figures 2, 4 and 6), the distance between the base 11 and the ground is between about 100 to 200 cm, and more preferably 74 cm. In use, when the change table 100 is in the lowered position and the barrier 18 is in the stowed state, a child is capable of traversing over the frame 10 and embark on the base 11 , to position themselves atop the change area 13.

[0068] In the preferred embodiment, the power mover 16 is an electrically powered actuator; however, it is understood that other types of linear actuator, such as for example pneumatic or hydraulic, may be used without departure from the present invention. Preferably, the lifting motor driving the actuator is positioned such that it is fully within the area occupied by the frame 10. The lifting motor is one rated to carry a certain load according to the specific application to which the invention relates, in a preferred embodiment being a lifting motor rated to carry a load of about 100kg. In a preferred embodiment, the change table 100 is provided with an actuation switch 32, said actuation switch 32 being configured to power the adjustment mechanism 16. Preferably, the switch 32 is a two-position switch such that the adjustment mechanism 16 can be powered in both a direction toward the raised position, and a direction toward the lowered position, independently. It is understood that said actuation switch 32 may be in the form of a pedal, tactile switch or a digital switch. According to the preferred embodiment of the invention, the switch 32is located on an outer facing surface of a side post 14, but may alternatively be mounted in any number of positioned such that it is accessible by an operator of the change table 100. Alternatively, the switch may be operable remotely from the change table 100, for example by a remote control or mobile phone application.

[0069] In alternative embodiments, other conventional lifting methods may be employed to adjust the height of the change table 100 such as, for example, a scissor lift including two or more pairs of lifting members.

[0070] Exemplary embodiments of the table 100 include a cover / skirt 27 which surrounds the base 11 and extends downwardly therefrom to prevent access underneath the base 11. The 'safety' cover, in the form of a skirt 27, may be provided surrounding the frame 10 or adjustable leg(s) 17 to prevent access thereto. The cover / skirt 27 is preferably a height adjustable cover / skirt 27 which adjusts in height relative the height of the / each leg 17. To effect such height adjustable, the cover / skirt 27 may additionally comprise a concertina portion wherein the cover additionally extends around an outer edge of the base 11. A cover / skirt 27 of this type would be configured such that, when the table 100 is in the raised position, the cover / skirt 27 expands to cover the distance between the base 11 and ground. Accordingly, the skirt 27 effectively prevents access underneath the base 11 in either of the raised or lowered positions.

[0071] The change table 100 can also be provided with a height adjustment position sensor ("height sensor"). The height sensor can be configured to detect the position of the base 11 or adjustable leg 17. Preferably, the height sensor is positioned to abut, or is integrated into, the prime mover 16. In exemplary embodiments, the height sensor may also be configured to detect obstructions, such as an object or child, beneath the base 11 and accordingly prevent movement of the height adjustment mechanisms.

[0072] The height sensor is configured to, upon activation of the prime mover 16, allow movement thereof up to a predetermined position. The height sensor may be programmable such that an operator can define said predetermined position. In exemplary embodiments, the height sensor is coupled to a processor, the processor providing the means by which the predetermined position can be programmed and having the means to memorize a plurality of predetermined positions, each predetermined position being selectable by a user.

[0073] The change table 100 may also be provided with a barrier position sensor ("barrier sensor"). Said barrier sensor is configured to determine the position of the barrier 18 relative to the stowed state and the deployed state. The barrier sensor may additionally be configured to determine if the latch arm 22 is engaging the latch plate 23 and configured to prevent operationof the prime mover 16 unless the barrier sensor detects the position of the barrier 18 to be in the deployed state.

[0074] In some embodiments, the height sensor and screen sensor may comprise the same sensor, and be configured to operate simultaneously. In some configurations, the sensors may operate to automatically deploy and retract the barrier 18 prior to operation of the adjustment mechanism, when a request is made, by the switch, to the prime mover. In doing so, the sensor may additionally actuate the latch arm 22.

[0075] A method 200 of changing (or attending to) a child using the change table 100 as described will now be provided, with particular reference to Figure 7.

[0076] In step 210, the change table 100 is at the lowered position (and if not, it will be actuated to the lowered position), with the barrier 18 in a deployed (or extended) state. If the barrier 18 is in the deployed position, then it will be moved to the stowed (or retracted) state. In one example, this is done by disengaging the latch arm 22 from the latch plate 23 such that, due to the rollers 20 bias, the screen 18 winds around the roller 20 to abut or sit below the uppermost surface of the base 11 . A child may then embark over the frame 10 and base 11 , to the mattress 12 and the atop the change area 13, unimpeded by any other obstacles. It is important to note that the barrier 18 is configured to be sufficiently retracted or stowed so that it does not impede access of the frame 10 or base 11.

[0077] In a following step 220, once the child is atop the change area 13, the method comprises positioning the barrier 18 in the deployed state and securing the barrier by, for example, engaging the latch arm 22 with the latch plate 23 to lock the barrier 18 in position. The prime mover 16 can then be operated, by a switch 32 for example, to raise the height adjustable leg and the base 11 of the table 100 to the raised position.

[0078] In the following step 230, once the change table 100 is at the raised position, the barrier 18 can then be released into the stowed state. This allows a caregiver to freely access the change area 13 at a desirable height and to attend to the child safely.

[0079] In the following step 240, once the child has been attended to, the barrier 18 is once again extended between the posts 14 in the deployed state. The prime mover 16 is actuated to lower the height adjustable leg(s) 17 so as to lower the base 11 of the change table 100 to the lowered position.

[0080] In a final step 250, the barrier 18 can be once again moved to the stowed state so that the child can disembark from the change area 13 of the base 11 to the ground without any impediments.

[0081] This above method advantageously prevents a child from inadvertently falling off the change table during height adjustment of the table 100. Additionally, this method removes the requirement for a caregiver to physically lift a child up onto and back down from the change table 100 in order to attend to the child.FURTHER EMBODIMENTS

[0082] Disclosed herein is a further embodiment of the present invention, which will now be described with reference to Figures 8 to 12. The further embodiment relates to a change table 100 comprising a frame 10 including a base 11 and a pair of upright-extending side posts 14 located at a proximal end of the base 11 and spaced from one another; at least one height adjustable leg17 operatively connected to the frame 10; a prime mover 16 configured to effect the height of the leg 17 so as to adjust the base 11 of the change table 100 between a raised position and a lowered position; and a barrier 18 positioned in between the pair of side posts 14, wherein the barrier 18 is configured to substantially extends between the side posts 14 in a closed state.

[0083] In this embodiment, the change table 100 includes mostly the same features as the previously described change table. Referring to the Figures, the table 100 is movable between a raised position (shown in Figures 8 and 9) and a lowered position (shown in Figures 9 and 10), and barrier 18 is alterable between an open position (shown in Figure 8 and 10) and a closed position (shown in Figures 9 and 11). However, it is contemplated that the barrier 18 thereof, rather than being in the form of a screen which is retractable into a cylindrical roller 20, is provided in the form a door, flap, screen or the like. In particular, the barrier 18 of this embodiment is one which preferably comprises a pair of hinged screens 24. The hinged screens 24 are positioned at a proximal end of the base 11. In use, the hinged screens 24 can be opened and closed, relative the base 11 , to place the barrier from a closed state to an open state. Figure 8 shows a barrier18 comprising such screens 24 in an open state, while Figure 9 shows the same barrier 18 wherein the screens 24 thereof are in a closed state. It is understood that the open and closed states are largely equivalent to the deployed and stowed states of the previous embodiment. Inclusion of a barrier 18 having such screens 24 is particularly advantageous as, when provided in a rigid form, they are particularly strong and can prevent a child / patient from inadvertently pushing against the barrier 18, from within the table 100, to break or deform the barrier 18 and falling out of the table 100. Furthermore, barriers 18 including a pair of screens 24 allow a caretaker to access the child / patient by opening only one of the screens 24, thereby reducing therisk of the child / patient falling out of the table 100 as the opening, with only one screen 24 open, is too small for the child / patient to fit through, but large enough for the caretaker to access the child / patient.

[0084] In some configurations, the barrier 18 is biased to the closed state, but, by hinged rotation of the screens 24, the barrier 18 is openable. In other embodiments, the barrier 18 is not configured to be biased, or biased to the close state. Shown best in Figure 9, to effect the hinged rotation, the barrier 18 preferably includes hinges 25, which rotatably couple each screen 24 to the posts 14 of the table 100. As shown in Figure 9, the table 100 preferably includes four such hinges 25, being two hinges per screen 24. Such an arrangement ensures adequate strength in the screens 24, thereby preventing breakage or damage to the screens 24, or hinges 25, in the case of, for example, a child / patient swinging from the screens 24, banging against the screen 24, or otherwise placing an undue force against the screens 24. It is understood, however, that the screens 24 may not need to include two hinges 25 each, and a single hinge may be suitable. Where that hinge is a heavy duty hinge, it may provide this same functionality as is provided by the two hinges (per screen 24).

[0085] It is further contemplated that, along with the potential to be formed of a polyvinyl chloride material, due to the barrier 18 of the present embodiment not requiring an ability to roll up into a retracted state, the barrier may be made from another material. In particular, acrylic has been identified as a suitable material for the barrier 18, being a material which can be provided in a substantially transparent form, and which can provide a large resistance to forces, cracking and wear.

[0086] Differing from the previous embodiments, the change table 100 described herein preferably includes four legs 17, each leg 17 extending from approximately a respective corner of the base 11 / frame 10. In this way, the legs 17 provide a more stable support to the table 100. Furthermore, the addition of four legs 17 in such an arrangement allows individual adjustment of each leg 17 to account for, and overcome, variations in a ground surface upon which the table 100 is placed. What is meant by this is that, if a ground surface were to include a portion of ground lower than, or tilted with respect to, the rest of the surface, the or each legs 17 corresponding to that portion could be adjusted (independently of the other legs 17) to accounts for that portion.

[0087] In exemplary embodiments, the table 100 may further include a wheel 26 disposed at an end of the, some or each leg 17 opposite the connection of that leg 17 to the frame 10. The wheel(s) 26 are provided to allow easy movement of the table 100, by rolling the table 100 atop the wheels 26. Preferably, where the table 100 includes four legs 17, the wheels 26 are provided at least at two of the legs 17, or more preferably at all four of the legs 17 (as shown in the Figures).Where wheels 26 are provided at each of the legs 17, the table 100 can be moved by simply pushing the table 100. Where wheels 26 are provided at only two of the four legs 17, a user can lift one end of the table 100, being the end corresponding to the legs 17 without wheels 26, and then push to effectively move the table 100 in a similarly way to wheel barrow or the like. In either configuration, it is noted that the inclusion of wheels 26 allows for substantially easier movement of the table 100, especially given that the table 100, including the / each prime mover 16, is likely to become relatively heavy when compared to a non-adjustable change table. It is contemplated that the wheels 26 are caster wheels, being wheels which allow free perpendicular rotation, and therefore aid in turning or steering the table 100 while it is being moved. However, the wheels 26 need not be caster wheels, and could instead be any type of wheel attachable to the end of the leg 17 as described, and which are rated to carry the weight of the table 100.

[0088] Turning now to Figure 12, the frame 10 of the change table 100 may include a fastener 27. The fastener 27 is provided to allow the change table 100 to be coupled to a wall or similar, to provide support to the change table 100 and thus prevent toppling of the change table 100 by supporting it in an upright position. It is contemplated that the fastener 27 is in the form of a bracket through which an anchor can be fastened, into the wall or similar, thus anchoring the table 100 thereto. For attachment to a wall or the like, it is contemplated that the fastener 27 is provided at or against the rearmost portion of the frame 10, being the portion opposite the posts 14 and barrier 18.

[0089] A method 300 of changing (or attending to) a user such as a child or patient using the change table 100 of the present / further embodiment will now be provided, with particular reference to Figure 13.

[0090] In step 310, the change table 100 is at the lowered position (and if not, it will be actuated to the lowered position), with the barrier 18 in an open state. If the barrier 18 is in the closed state, then it will be moved to the open state. In one example, this is done by disengaging the latch arm 22 from the latch plate 23 such that, due to the hinge 25 bias, the screens 24 open. A user may then embark over the frame 10 and base 11 , to the mattress 12 and the atop the change area 13, unimpeded by any other obstacles. It is important to note that the barrier 18 is configured to be sufficiently opened such that it does not impede access of the frame 10 or base 11.

[0091] In a following step 320, once the user is atop the change area 13, the method comprises positioning the barrier 18 in the closed state and securing the barrier 18 by, for example, engaging the latch arm 22 with the latch plate 23 to lock the barrier 18 in position. Theprime mover 16 can then be operated, by a switch 32 for example, to raise the height adjustable leg 17 and the base 11 of the table 100 to the raised position.

[0092] In the following step 330, once the change table 100 is at the raised position, the barrier 18 can then be re-opened. This allows a caregiver to freely access the change area 13 at a desirable height and to attend to the user safely.

[0093] In the following step 340, once the user has been attended to, the barrier 18 is once again placed into the closed position. The prime mover 16 is actuated to lower the height adjustable leg(s) 17 so as to lower the base 11 of the change table 100 to the lowered position.

[0094] In a final step 350, the barrier 18 can be once again be moved to the open state so that the user may disembark from the change area 13 of the base 11 to the ground without impediments.

[0095] While various embodiments of the present invention have been described above, it should be understood that they have been presented by way of example only, and not by way of limitation. It will be apparent to a person skilled in the relevant art that various changes in form and detail can be made therein without departing from the spirit and scope of the invention. Thus, the present invention should not be limited by any of the above described exemplary embodiments.

[0096] Throughout this specification and the claims which follow, unless the context requires otherwise, the word "comprise", and variations such as "comprises" and "comprising", will be understood to imply the inclusion of a stated integer or step or group of integers or steps but not the exclusion of any other integer or step or group of integers or steps.

[0097] The reference in this specification to any prior publication (or information derived from it), or to any matter which is known, is not, and should not be taken as an acknowledgment or admission or any form of suggestion that that prior publication (or information derived from it) or known matter forms part of the common general knowledge in the field of endeavor to which this specification relates.

Claims

THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS:

1. A change table, comprising : a frame including a base and a pair of upright-extending side posts located at a proximal end of the base and spaced from one another; at least one height adjustable leg operatively connected to the frame; a prime mover configured to effect the height of the leg so as to adjust the base of the change table between a raised position and a lowered position; and a barrier positioned in between the pair of side posts, wherein the barrier is configured to substantially extend between the side posts in a closed state.

2. A change table according to claim 1 , wherein the barrier comprises a pair of hinged screens positioned at the proximal end of the base.

3. A change table according to claim 1 or claim 2, wherein the barrier is configured to hingedly rotate into an open state so as to allow unimpeded access to the base.

4. A change table according to any one of the preceding claims, wherein the barrier comprises a substantially transparent material.

5. A change table according to claim 4, wherein the material is polyvinyl chloride or acrylic.

6. A change table according to any one of the preceding claims, wherein the barrier is biased to the open state, and retainable in the closed state by one or more latching member(s) that couple with the / each of the side posts.

7. A change table according to any one of the preceding claims, wherein the / each of the side posts includes a catch configured to retain the barrier when extended between the side posts.

8. A change table according to any one of the preceding claims, wherein the height adjustable leg is a telescopic leg and wherein the table comprises four such adjustable legs for supporting the frame.

9. A change table according to any one of the preceding claims, wherein the prime mover comprises a linear actuator configured to adjust the height of the leg.

10. A change table according to any one of the preceding claims, wherein the prime mover is configured to prevent the table from raising further than a predetermined height.

11. A change table according to any one of the preceding claims, wherein the prime mover is configured to be operable only when said barrier is in a closed state.

12. A change table according to any one of the preceding claims, comprising a sensor configured to detect a position of the barrier, the sensor preventing operation of the prime mover when the barrier is not in the closed state.

13. A change table according to any one of the preceding claims, comprising a sensor configured to detect operation of the prime mover, the sensor preventing hinged rotation of the barrier into an open state when the prime mover is operated.

14. A change table according to any one of the preceding claims, wherein the base is surrounded by a plurality of right-extending posts.

15. A change table according to any one of the preceding claims, wherein the / each leg includes a wheel disposed at an end opposite said connection to the frame for moving the change table.

16. A change table according to claim 15, wherein the / each wheel is lockable to prevent the change table from moving.

17. A change table according to claim 15, further comprising a skirt which surrounds the base and extends downwardly therefrom to prevent access underneath the base.

18. A change table according to claim 17, wherein the skirt is a height adjustable skirt and adjusts in height relative the height of the / each leg.

19. A method of attending to a user by a caretaker using a change table in accordance with any one of claims 1 to 18, the method comprising the steps of: opening the barrier into an open state when the base is in the lowered position so that the user may embark onto the base; closing the barrier into a closed state so as to allow safe operation of the change table; operating the prime mover to adjust the height of the base to the raised position; andopening the barrier into an open state when the base is in the raised position to attend to the user.

20. A method according to claim 19, further comprising the steps of: closing the barrier into the closed state, when the base is in the raised position, once the user has been attended to; operating the prime mover to adjust the height of the base to the lowered position; and opening the barrier into an open state so that the user may disembark from the base of the change table.

21. A method according to either claim 19 or claim 20, further comprising a sensor for sensing a position of the barrier, the method including preventing operation of the prime mover if the sensor detects the barrier to be in the open state.

22. A method according to claim 21 , further comprising a sensor for sensing operation of the prime mover, the method including preventing any movement of the barrier into the open state if the sensor detects ongoing operation of the prime mover.

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