Patent Application
20180036189
The present disclosure claims priority to European patent application no. 15158076.8, filed on Mar. 6, 2015, herein incorporated by reference in its entirety.
The present disclosure relates to a patient transfer and training aid for the assisted mobility and transfer of people in daily life within community care, residential or nursing homes, hospital and medical facilities and institutional care as well as for mobility training, physical therapy and rehabilitation.
It is well known to provide walkers to assist elderly or infirm people to walk. These walkers generally comprise a frame-like structure mounted on wheels. The frame-like structure includes handles or a handle bar which a user can take hold of. Such walkers can be used by persons who are able to raise themselves to a standing position and who are capable of assisted walking. These walkers, however, have no dynamic foot support adapted for muscle or balance training.
It is also well known to provide mobile invalid hoists to assist individuals that are unable to stand and/or walk unaided. Such hoists can facilitate raising a patient to a standing or substantially standing position and support the patient in such a position while the patient is transferred from one location to another. Conventional invalid hoists generally comprise a mobile chassis, a support structure upstanding from the chassis, a lifting arm arrangement projecting from the support structure and providing laterally spaced attachment points for the attachment of a body support sling positioned around the back of a seated patient below the patient's arms and a lifting mechanism for raising the lifting arm and patient to a standing position. One such hoist is disclosed in GB-A-2,140,773. While such hoists may occasionally have a static footrest, as illustrated in GA-A-2,140,773, such static footrests provide no dynamic therapy for muscle and balance training.
The applicant has previously developed patient lifting and transport devices, some described in EP-1,029,524 and GB-2,318,329. These devices are particularly suitable for use by persons who are capable of raising themselves to a standing position but who are incapable of walking even when aided by a walker. The devices disclosed in GB-2,318,329 include a mobile chassis, a support structure upstanding from the chassis, a footplate supported by the chassis, a knee abutment above the footplate, hand supports supported by the support structure and two seat parts movable between inoperative positions in which a seated person can take hold of the hand supports and raise himself to a standing or substantially standing position on the footplate and operative positions behind the seat of the person when standing so that the person can be supported by the seat parts with his feet on the footplate and his knees against the knee abutment. As patient lifts and transport devices, these apparatus are very successful.
The present disclosure relates to improvements to these devices and similar devices to allow for both patient transport and the effective muscle training of a patient, leading to improved patient recovery.
According to an exemplary embodiment of the present disclosure, there is provided a patient transport and training device including a mobile chassis for transporting a user, a support structure extending upwards from the chassis, at least one handle extending from the support structure for moving the device and a foot support assembly. The foot support assembly includes a powered footplate member which vibrates when actuated. This vibration may be used to deliver dynamic vibrational therapy to a user positioned on the footplate member.
The device can provide simultaneous lifting, support, transport and allow for balance and/or muscle training of a patient to enhance patient recovery and mobility.
The device may include a control unit to control operation of the driven footplate member and/or lifting mechanism. In one embodiment, the control unit includes a user input element and may provide for variable control on the basis of inputted commands.
A leg support of the device may be detachable and/or retractable to an inoperative position.
The device in an exemplary embodiment includes a powered lifting mechanism which comprises at least one lifting arm assembly and an actuating device operative to raise and lower the lifting arm assembly. The lifting arm assembly may be pivotable about first and second axes, the first axis being substantially fixed and being further from the projecting end of the lifting arm than the second axis, wherein in use the actuating device raises and lowers the lifting arm.
The device may include a guide path generally upwardly inclined in an in use direction away from the person being lifted. The guide path may be rectilinear, curved, S-shaped or substantially S-shaped.
Advantageously, there is provided a sling connectible to the lifting mechanism to at least assist in raising a seated person to a standing or substantially standing position.
The device may include a hand grip or grips for supporting the arms of a person to be lifted.
In one embodiment, the lifting mechanism includes two lifting arms both of which are pivotally connected to the arm support. The two arms are advantageously arranged so as to move the arm support from a position in which it is upwardly inclined in an in use direction away from a person to be lifted to, or towards, a position in which it is substantially horizontal as the arm support is raised by the lifting mechanism.
In another embodiment, the lifting mechanism includes one or more lifting arms, each lifting arm including a user arm support connected thereto.
Advantageously, one or each of the hand support is provided at or adjacent to the upper end of the upstanding support structure.
The foot support assembly may include a single footrest or a pair of footrests, with common or separate driven footplate members. In one embodiment, the powered footplate member is detachably connectable to the device. The footplate member may have a cantilevered configuration. In another embodiment, the footplate member may be in direct contact with the ground and/or may be detachably connected to and/or supported by a footplate base. Optionally, the footplate base may include one or more wheels to facilitate mobility. In one embodiment, the footplate member may be movably connected to the device, wherein it may be moved from a first position in which it is extended to receive and/or support a user and a second position in which the footplate member is retracted within a space of the mobile chassis and/or support structure for storage. A motor for driving the footplate member may be positioned within a space defined in part by the footplate base, support structure and/or mobile chassis.
The support structure may be adjustable in length so that it can be adjusted to suit the height of a user.
Conveniently, the chassis includes two parallel or substantially parallel legs each supporting a wheel or castor at or adjacent each end, the legs being spaced apart by a lesser distance at their rearward ends than at their front ends to enable the rear ends of the legs to pass inside chair legs or a wheelchair.
According to an exemplary embodiment of the present disclosure, there is presented a method for using a transport and training device. The device includes a mobile chassis for transporting a user and a foot support assembly including a powered footplate member which vibrates when actuated. The method involves activating the powered footplate member to vibrate when a user's foot is positioned on the powered footplate member. The footplate member may be driven to vibrate at a frequency between about 5 to about 40 Hertz and/or at an amplitude of between about 1 to about 5 mm. The footplate member may also vibrate at a steady state or varying vibrational frequencies and/or amplitudes.
During use, the user may be seated in a chair adjacent to device, and the user's feet may be positioned on the powered footplate member and the user may directly engage the hand grips of the device while the footplate member is vibrating. The method may further involve raising a user from a sitting to a standing position using a powered lifting mechanism of the device. A leg support of the device configured to abut a user's leg may be retracted after the user has attained a standing position. The method may further involve the user standing on the vibrating footplate member for therapeutic use. A sling may optionally be secured about the user's torso while he is standing on the vibrating footplate member. The user may also engage handgrips of the device while standing on the vibrating footplate member. The user may also stand on the vibrating footplate member while unsupported by a sling or other component of the device and without holding onto the hand grips. The method may further involve simultaneously transporting a user between two locations while he/she is standing on the vibrating footplate member. In an exemplary embodiment, the method may further involve strengthening a user's muscles, improving a user's balance and/or improving, preventing the incidence of or treating a muscle or balance disorder or defect by using the device. The method of the may be accomplished using any of the transport and training aids described herein.
Other features and advantages will become apparent from the description which follows.
Embodiments of the present disclosure are described below, by way of example only, with reference to the accompanying drawings, in which:
Referring first to
The chassis 10 comprises two legs 16 (the second leg is not visible in the side view of
Two leg supports or knee abutments 19 are supported by arms 20 which are detachably connected to a bracket 21 mounted on the chassis 10. The knee abutments 19 are pivotally connected to the arms 20 about a horizontal axis 22 and are urged into a vertical or substantially vertical position (as shown in
The lifting mechanism 15 comprises two lifting arms 25 and 26, a power driven linear actuator 27, typically a motor driven hydraulic actuator of the type made and sold by Smiths Industries Limited as a Single Acting Electrohydraulic Actuator 102740, and two spaced apart guide plates 28 (the second guide plate is not visible in the side view of
The guide plates 28 are secured between the chassis 10 and the upper end of the support structure 12. Each guide plate 28 has an elongate guide slot 29. In the embodiment shown, these are rectilinear slots, but they could be curved or S-shaped slots. The slots 29 are upwardly inclined in a direction away from a person to be lifted. In one embodiment, the slots 29 could be so arranged that the person being lifted is initially moved in a generally forwards direction and then in a generally upwards direction.
The actuator 27 is pivotally connected at its lower end about a horizontal axis 30 between the two guide plates 28.
The lower lifting arm 26 is bifurcated at its projecting end where it is pivotally connected to the bracket 14 and is pivotally connected at its other end about a pivot pin 31 supported by the upstanding support structure 12. The lower lifting arm 26 is also pivotally connected to the extendible part of the actuator 27 and has two rollers 32 which are located in the two guide slots 29 (the second guide slot is not visible in the side view of
It will be appreciated that as the lower lifting arm 26 is pivotally connected about both the pin 31 and to the extendible part of the actuator 27, there is some provision for limited movement of this lifting arm 26 relative to one of these two pivots. This limited movement is provided relative to the pivot pin 31 by an elongate slot in the lower lifting arm 26 for receiving the pivot pin 31.
Pivoting the lower lifting arm 26 about the extendible part of the actuator 27 as well as about the pivot pin 31 and guiding the rollers 32 along the guide slots 29 has the effect of flattening out the arc through which the outer end of the lifting arm 26 would otherwise pivot if it was pivoted only about the pivot pin 31. The bracket 14 is thus raised along what approximates to a rectilinear path to thereby closely mimic the way in which a person stands when lifting himself from a seated position using downward pressure of his hands on the armrest of a chair. This is in contrast to the hitherto known practice of lifting a person along an arcuate path and is considered to provide a more comfortable lift.
The two lifting arms 25 and 26 could form a parallelogram linkage between the actuator 27 and the bracket 14, but may be arranged to move the bracket 14 and thereby the arm supports 13 from a position in which they are upwardly inclined in an in use direction away from a person to be lifted to, or towards, a position in which they are substantially horizontal as the brackets 14 and arm supports 13 are raised by the lifting mechanism 15. This is achieved by spacing the pivotable connections between the two arms 25 and 26 and the bracket 14 closer together than the pivotable connections between the two arms 25 and 26 and the actuator 27 and has the advantage that the lifting device can raise and lower a taller person to a standing or substantially standing position than would otherwise be the case with lifting arms of the same length.
The arm supports 13 are generally L-shaped to support the forearms and at least part of the upper arms of a person to be lifted. Each arm support is provided with a hand grip 33 and the position of each hand grip 33 may be adjustable so that the elbow of the person to be lifted can rest in contact with the junction between the two limbs of the generally L-shaped arm supports 13. The arm supports 13 are shaped to cradle the person's arms and are padded to give added comfort.
Releasable straps (not shown), typically having hook and loop fastening means, may be provided on the arm supports 13 to hold the arms of the person firmly in place.
A sling 34 is also provided. The sling 34 is made of a woven fabric material and a central part of the sling 34 may be padded for comfort. The sling 34 has a cord 35 at each end and the bracket 14 is provided with two jamb cleats 36 (shown in
An adjustable strap (not shown) may be provided between the free ends of the arms of the bracket 14 to prevent a person to be lifted falling into the bracket 14.
One or more handles 38 may be provided at the upper end of the support structure 12 to allow an attendant to wheel the lifting device over the floor. In the embodiment shown in
Referring now to
In use, the multifunctional patient transfer and training device may be positioned adjacent to a seated person with the legs 16 of the chassis 10 straddling opposite sides of a chair on which a person to be lifted is seated. To lift the patient to a standing position, the person may places his/her feet on the foot support 11 with his/her knees against the knee abutments 19. The person then places his/her arms in the arm supports 13 and takes hold of the hand grips 33. The releasable straps (if provided) can then be secured in place around the arms by a nurse or other attendant. The sling 34 is then placed around the lower back of the seated person and connected to the jamb cleats 36. The arm supports 13, which provide upper body control and prevent the person swaying from side to side, are then raised. As the person is raises to a standing position, the knee abutments 19 pivot against the urging force of the springs 23 so that the knees of the patient move slightly forwards. As the person reaches a standing or substantially standing position, the springs 23 urge the knee abutments 19 and the knees of the person being lifted rearwards. In this initial standing position on foot support 11, the device may be used to transport the patient. Engaging gripping handle 38, an attendant or caregiver can push, pull and otherwise direct movement of the device to transport the patient to a desired location.
When the transport and training device is to be used as a rehabilitation aid to help a person practice walking, in one mode the foot support 11 may be removed and/or retracted into the base of support structure 12 before the patient is lifted. Once the person has been lifted to a standing position, the knee abutments 19 may be removed and/or retracted into the base of support structure 12 to create clearance for the patient to walk. The device may thus be used as a walking aid while the patient holds and is supported by arm support 13 and/or sling 34.
In another therapy mode, the transfer and training device may be used to provide balance and/or muscle training. For example, a patient seated in a wheelchair or arranged in a seated positioned adjacent to the device may place one or both feet on foot support 11. The knee abutments 19 may be removed and/or refracted in to support structure 12, and legs 16 may be pivoted to taper away from base 17 and foot support 11 during such therapeutic use to provide additional space to accommodate a patient's legs and feet. Thus situated, the vibrations of foot support 11 function to strengthen the lower leg muscles of a patient while the patient is seated. The patient may also rise to a standing position and use foot support 11 as a muscle strengthening and balance training aid. As foot support 11 vibrates, the patient may engaging arm support 13 and hand grip 33 for support. Optionally, sling 34 may also be secured around the patient's back for added support. Knee abutments 19 may be removed and/or retracted in to support structure 12 to provide additional space during therapeutic use or alternatively, may be extended to help position or support the patient. For advanced balance and muscle training, the patient may also remove and/or let go of all supports (e.g. knee abutments 19, sling 34, arm support 13, hand grip 33). The device also allows for transport of a patient while simultaneously undergoing balance and muscle training if desired.
Referring now to
As will become apparent below, the lifting arms 125 can be lowered and raised in order to support and assist a patient, in a manner very similar to the examples of
As best shown in
The apparatus 100 includes a frame or chassis 10 and a main body or support structure 12, configured as a lifting unit, with attendee gripping handle 38, all having a structure and characteristics the same as or similar to the example of
The apparatus 100 includes an active foot 111 which functions to provide physical therapy to a user, such as by strengthening a user's muscles and/or improving balance. The same or similar components, structure, features and functionality of foot support 111 described below may be incorporated in active foot support 11
In an exemplary embodiment, the motor of active foot support assembly 111, operatively associated with footplate member 109, may be housed in a footplate base 107 or alternatively in support structure 12 and/or base 17. The footplate member 109 may be configured to vibrate at a relatively low frequency, for example, of between about 5 to about 40 Hertz and at an amplitude of between about 1 to about 5 mm. In one embodiment, the foot support assembly 111 is selectively controllable to vibrate footplate 109 at any selected frequency within a range of about 5 to about 40 Hertz and at any one of a selected amplitude between the range of about 1 to about 5 mm, either in a steady state of vibration frequency and/or amplitude or in a varying sequence to provide varying vibratory effects. In an exemplary embodiment, the motor of foot support assembly 111 and footplate 109 may be configured to vibrate at a frequency adapted to provide therapeutic activation of large muscle groups in a user's legs and/or torso effective to provide strength training, rehabilitate muscles and improve balance and/or posture. In another embodiment, the motor of foot support assembly 111 and footplate 109 may be configured to vibrate at a frequency adapted to therapeutically and effectively: prevent osteoporosis; reduce or reverse muscle atrophy; build and/or strengthen muscles, such as but not limited to pelvic muscles; improve muscle contraction; treat diseases of muscular origin; mitigate, improve and/or treat back pain; improve blood circulation; and improve and/or treat incontinence.
An active foot support assembly 111 together with the patient lift and transfer components of apparatus 100 assists not only in the treatment of a patient to regain the ability to stand and move around, but also in the activation of large muscle groups which can contribute to muscle toning and strengthening. The active foot support assembly 111 can also provide reflex based muscle stimulation and also body posture training. In all, the apparatus 100 can assist in building a patient's muscle strength, balance and improved body posture, in order to facilitate and optimise patient recovery and rehabilitation. In particular, the provision of an active foot support assembly 111 of the type shown in these Figures can be useful for any one or more of the following: training of muscle power/muscle force, after immobilization and injuries, prevention of osteoporosis, balance training and prevention of falls, coordination training, muscle atrophy, back pain, bad blood circulation, pelvic muscle training, stress-incontinency therapy, diseases of muscular origin, muscle contraction.
The patient transfer and training aid 100 may therefore help to reduce the length of a patient's stay in the hospital, reduce the duration of rehabilitation by assisting patients to becoming stronger and reduce the need for multiple attendees and/or professional physical therapists to deliver therapeutic strength and balance training. Apparatus 100 can allow a non-physiotherapist to train a patient, and both the sit to stand, vibration muscle building and balance training exercises can be part of a user's daily routine as is illustrated in
Apparatus 100 also includes a control unit 150 which can be controlled by the patient and is operatively associated with and coupled to the active foot support assembly 111 and/or lifting arm assembly 115, specifically to the motor units thereof. The control unit 150 includes any suitable user input allowing the user to control when to activate the foot support assembly 111 and the lifting arm assembly 115 and, where the activation can be regulated, to regulate this as desired. The control unit 150 may include a plurality of stored or storable exercise routines and sequences which can be selected by the patient as well as one of more control buttons, dials or other inputs enabling the patient to control the precise settings of the apparatus, for instance, not just whether the foot support assembly 116 is activated but also vibration frequency and/or amplitude of each footplate member 109. In one embodiment, it may be possible to independently control and customize the vibrational settings for two separate footplate members 109 and/or for different regions (e.g. left and right region) of a single footplate member 109. Controls may simultaneously and/or correspondingly pivotally move user arm supports 124 up, down or to the left and right.
The apparatus 100 can provide a plurality of degrees of support to a patient during rehabilitation training, depending upon the strength and ability of the patient to balance. Examples are shown in
With reference to
In
In
It will be readily appreciated that training and/or patient transfer can also be effected in other configurations intermediate those shown in
The teachings herein are not limited to the particular structures of apparatus shown in the drawings and described above and can be incorporated into a variety of patient handling and transfer devices including, for example, the ArjoHuntleigh Sara Combilizer™, Sara Plus™, Sara 3000™ and Sara Lite™ and Sara Stedy™ rehabilitation, standing, rising and/or transport devices.
In the embodiments described above, the foot support assembly 111 may be fixed to the device 100 so as to be an integral part of the device. It is envisaged also that the foot support assembly 116 could be of attachable form, for example to have fixing elements formed therewith, enabling the assembly 111 to be retrofitted to an existing patient transfer device. For instance, considering the example of
The embodiments described above are given by way of example only and various modifications can be made by persons skilled in the art without departing from the scope of the present disclosure. For example, the transfer aid could be designed to be foldable for ease of storage and transport.
All optional features and modifications of the described embodiments and dependent claims are usable in all aspects of the disclosure taught herein. Furthermore, the individual features of the dependent claims, as well as all optional features and modifications of the described embodiments are combinable and interchangeable with one another.
The disclosure in the abstract accompanying this application is incorporated herein by reference.
| Number | Date | Country | Kind |
|---|---|---|---|
| 15158076.8 | Mar 2015 | EP | regional |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2016/054719 | 3/6/2016 | WO | 00 |
