The field of the present invention relates to an apparatus to assist with ambulation generally, and more specifically an assistive walking device related to the field of walkers and canes.
Many people need an assistive walking device to help with balance, instability or pain. An assistive device may aid a person, allowing the individual to walk more safely and independently. The vast majority of assistive walking devices are single point canes and two handed walkers. A single point cane apparatus provides minimal support to the user. Two handed walkers provide substantial support but can be unwieldy and burdensome for those not requiring that level of assistive support.
Thus, an assistive walking device may provide balance and stability with walking and standing, which may, in turn, allow the user safer mobility, independence, and a better quality of life. Additionally a walking device can help to reduce pain by transferring some of the weight off the painful limb or body and onto the support or assistive device. People with neurological sequelae following a stroke, or suffering from Parkinson's disease, multiple sclerosis, arthritis, foot or leg pain, balance problems, weakness, or a multitude of other conditions can benefit significantly from the added balance and support of an appropriate walking device. Furthermore, people with recent surgery on one side of their body, or paralysis, may require a one handed device in their strong hand to provide adequate support for them to be safer with mobility.
The vast majority of assistive walking devices are single point canes and two handed walkers, which demands the least coordination of all the assistive devices. A single point cane provides minimal support to the user and the two handed walker provides substantial support but can be unwieldy and burdensome for those not requiring that level of assistive support. There is, therefore, a lack of devices for people requiring an intermediate level of support-users who find the cane to be inadequate due to too little support and the two handed walker unnecessary. The use of a two handed walker when it is not needed can lead to decreased large muscle strength, poor posture, and a loss in balance and maneuverability.
There is, therefore, a lack of devices for people requiring an intermediate level of support-users who find the cane to be inadequate due to too little support and the walker unnecessary.
The prior art includes walkers and canes designed to assist with ambulation. For example, U.S. Pat. No. 6,158,453 to Nasco, discloses, in part, a wheel mounted cane secured to extend laterally from a four-wheeled carriage for use in supporting and balancing a user. U.S. Pat. No. 564,760 to Nevin, discloses, in part, a hemi-wheeled walker which is, in particular, useful to hemiplegics. U.S. Pat. No. 6,877,519 to Fink, discloses, in part, a collapsible side wheeled walker to accommodate a user walking to one side of the walker while holding the walker. U.S. Patent Application Pub. No. US2003/0094191A1 to Lin, discloses, in part, a walk assist device that includes a handle and base connected to a lower end of the handle, with two brake members extending from two ends of the base, and two frames pivotably connected to the base. U.S. Pat. No. to Karasin et al., discloses, in part, a rolling, braking cane. The prior art devices have a suboptimal orientation of wheels and glider supports, and lack an efficiently accessible storage compartment. What is needed is an optimally-proportioned, rolling cane, with an efficiently accessible storage compartment, that may be operated with one hand.
Aspects of the present invention describe a one-handed walking device which is necessary and desired by some users. The present inventive assistive walking, device may help patients with a stronger upper limb, allowing them to offload weight from a painful, weaker side, or post surgical side—resulting in improved balance, decreased pain, and a lessened fall risk. Certain embodiments of the present invention disclose a rolling cane with four points of contact, which increases the base of support, in turn providing increased support and balance for the user. The present inventive assistive walking device provides more support and balance to the user than a single point cane. In certain embodiments it may have four continuous points of contact on the ground, with a handgrip relatively centrally placed to allow force down through the center of the device's base of support for stability and control. In certain cases, the apparatus may be used in the opposite hand of an affected leg and works in tandem with it to increase balance and aid in weight distribution. Aspects and embodiments of the present invention include an easy rolling motion, more like a two handed walker, but only requiring one hand. Further, the present inventive apparatus is compact and agile, and allows more fluid and continuous motion during ambulation.
Further, because the inventive apparatus does not need to be picked up with each step, it improves energy efficiency, energy conservation, and results in improved stability for the user. Additionally, torque and other joint stresses can be minimized by using the present inventive assistive walking device.
Moreover, pain or injury can make a person avoid weight bearing on an affected side in an attempt to unload the mechanical stress on the painful area. Therefore the time is decreased in single limb stance phase of a normal gait pattern on the affected side. The present inventive assistive walking device provides support during single limb stance phase which increases stability and allows for a more normal gait pattern and decreased pain. Studies have shown that the ground reaction force from the floor through a cane counteracts contralateral pelvic tilt during the swing phase of gait and the result is decreased joint compression forces at the hip. This may be improved through use of the presently disclosed apparatus.
Therefore, an optimally-proportioned, rolling assistive walking cane, with efficient storage, having the benefit of a plurality of legs terminating in wheels and plurality of back leg terminating in gliders, with compartment storage is disclosed.
Turning to
In one embodiment, frame 10 and front leg front leg second element 40 are not affixed but are integrally formed and front second element 40 is formed contiguous with frame 10. In this embodiment, frame 10 is shaped to define front leg second elements 40, wherein front leg first elements 35 slides over front second element 40.
A plurality of wheels 30, are affixed to the second end 25 of legs 15. A variety of wheels may be utilized for this purpose. In one example embodiment, wheels 30 may have a rubber surface and be 5″ in diameter, however, a wide variety of wheel composition and sizes may be employed. Wheels 30 may be affixed to second end 25 of front legs 15 through axle 45 passed through second end 25, and in one embodiment, said axle may be a threadable bolt 50, and in other embodiments, a non-threadable axel element may be used, such as any pole or pin upon which wheel 30 may revolve. Wheels 30 may be also inserted into a void in second end 25 of first front leg elements 35.
A plurality of back legs 55, in one embodiment, have a back leg first end 60 and a back leg second end 65, with the first end 60 being affixed to frame 10. The attachment of back legs 55 to frame 10 is best shown by
In one embodiment, back legs 55 are adjustable, and various methods may be used for adjustment and are considered within the scope of this invention. In one non-limiting example embodiment, back legs 55 are formed of a back leg first element 70 and a back leg second element 75 which is attached to frame 10, wherein back leg second element 75 is at least partially disposed within first element 70, and back leg second element 75 is telescopically extendable therefrom. It should be readily noted that in an alternative, the telescopic leg orientation can be reversed such that the back leg first element 70 could be at least partially disposed within and extendable therefrom the second element 75. In another embodiment, back legs 55 are formed of a non-extendable single element.
In a preferred embodiment, front legs 15 and back legs 55 are integrally formed with frame 10, such as by welding aluminum tubing, injection molding, or any processes producing a unitary element. In one embodiment, such a unitary element may be aluminum, in another it may be plastic. In one embodiment, frame 10, and back leg second element 75 are not affixed but are integrally formed and back leg second element 75 is formed contiguous with frame 10. In this embodiment, frame 10 is shaped to define back leg second element 75, and back leg first element 70 slides over back second element 75. In another embodiment, frame 10, front legs 15, and back legs 55 are separate elements that may be boltably affixed, or be shaped to define male and female threadable elements that may be screwingly engaged. In one embodiment frame 10 is integrally formed with front legs 15, or back legs 55. In another embodiment, frame 10 may be integrally formed with both front legs 15 and back legs 55.
A plurality of glides 67, are affixed to the second end 65 of back legs 55. A variety of glides may be utilized for this purpose. In one example embodiment, glides 67 may be comprised of plastic, rubber, urethane, or any suitable material. The selection of material will depend on the variables such as the desired frictional resistance, the floor surface, and user expectations, desires, rehabilitation needs, and physical abilities.
In certain embodiments, front legs 15 may be adjustable. In one embodiment, the front leg first element 35 may be shaped to define a plurality of front leg apertures 80. Depressible locking pin button 85 may insert within any of the plurality of front leg apertures 80 to lock first front leg 35 and second leg element 40 into position. In one embodiment, the terminal aspect of second leg element 40 is shaped to define a button aperture. In one embodiment, a spring tension button pin may be inserted within the void of the relative terminal aspect of second front leg element 40, such that button 85 is exposed through button aperture. Button 85 is under spring tension and depressible such that button 85 may be directed inwardly and legs moved to register with any of the plurality of front leg apertures 80, as is commonly understood in the art.
In certain embodiments, back legs 55 may be adjustable. In one embodiment, the front leg first element 70 may be shaped to define a plurality of front leg apertures 90. Depressible locking pin button 95 may insert within any of the plurality of front leg apertures 90 to lock first back leg 70 and second leg element 75 into position. In one embodiment, the terminal aspect of second back leg element 75 is shaped to define a button aperture. A spring tension button pin may be inserted within the void of the relative terminal aspect of second back leg element 75, such that button 95 is exposed through a button aperture. Button 95 is under spring tension and depressible such that button 95 may be directed inwardly and legs moved to register with any of the plurality of front leg apertures 90, as is commonly understood in the art.
In a preferred embodiment, apertures 80 and 90, and buttons 85 and 90 are the same, and the same spring tension button pin setup as described above with the terminal aspect of second front leg element 40 and second back leg element 75.
The illustrated button locking mechanism is for illustrative purposes only, and any locking means to permit adjustment of apparatus height is within the scope of the present invention. By way of example, in an alternative, front legs 15 and back legs 55 may be adjusted by a pin inserted through apertures. For example, a ball lock pin, such as those manufactured by Jerico, Inc., could be inserted through apertures in the first front leg element 35 and the second front leg element 40 and first back leg element 70 and second back leg element 75. A wire lock or locking bolt could also be utilized, as could a threadable collar to adjust height of telescoping legs.
Turning to
Returning to
In one embodiment, frame 10, and handle second element 135 are integrally formed and handle second element 135 is formed contiguous with frame 10. In a preferred embodiment, frame 10 and second handle element 135 are comprised of aluminium tubing and welded together, in another embodiment, frame 10 and second handle element 135 are integrally formed by injection molded plastic. In yet another embodiment, handle 115 and frame 10, or second handle element 135 and frame 10, may be separate elements that may be boltably affixed, or be shaped to define male and female threadable elements that may be screwingly engaged. It should be apparent that front legs 15, and back legs 55, handle 115, and frame 10 may be formed as a single element (e.g. flowably molded), or formed as individual elements but permanently affixed (e.g. by welding aluminium tubes), or formed as individual elements and reversibly engagable (for example: screwably engaged or affixed by bolt and nut), or a combination of these. In some embodiments, leg and handle elements are not formed of individual elements but a single structure, and may so formed independently of each other, wherein some elements are multi-part elements and others are formed of single structure elements.
In certain embodiments, handle 115 may be adjustable. In one embodiment, handle first element 130 may be shaped to define a plurality of handle apertures 145. Depressible locking pin button 150 may insert within any of the plurality of handle apertures 145 to lock second handle element 130 and first handle element 135 into position. In one embodiment, the terminal aspect of second handle element 135 is shaped to define a button aperture. A spring tension button pin may be inserted within the void of the relative terminal aspect of second handle element 135, such that button 150 is exposed through button aperture. Button 150 is under spring tension and depressible such that button 150 may be directed inwardly and second handle element 130 moved to register button 150 with any of the plurality of handle apertures 145.
Additionally, it should be readily noted that in an alternative, the telescopic handle orientation can be reversed such that the first handle element 130 could be at least partially disposed within and extendable therefrom the second handle element 135. In another embodiment, handle element 115 is formed of a single integrally formed element.
Turning now to
Returning to
Turning now to
Therefore, one independent, optional aspect of the present invention is an overall trapezoidal shape wherein, when viewed from below, the wheels and glides make up four points that form an overall substantially trapezoidal shape. The perimeter of the trapezoid is defined by the wheel-to-wheel distance 165, the glide-to-glide distance 160, and the wheel-to-glide distance 170 bilaterally which form the perimeter of said trapezoid.
Turning now to
One further independent aspect of an embodiment of the present invention is apparatus angle relative to the user. The present inventive assistive walking device was designed with a small slope backwards from front legs to back legs to allow more leverage and allow wheels 55 to roll more easily over small flooring transitions. The apparatus angle helps prevent the device from tilting forward when rolling over transitions such as when rolling from smooth floor to carpeting or a rug. This angle not only improves stability, but it lessens the risk of falls and provides more control for the user. In one embodiment, as shown by
First, turning to
Second, the frame itself may be angled to achieve a desirable forward angle. For example, measuring from horizontal, frame 10 may be angled relative to the horizon to bring grip 140 backwardly. Third, as shown by
It should be realized that the frames demonstrated are mere examples, and the frame may be a variety of shapes including round, oval, quadrilateral, rectangle, square, trapezoidal, or triangular. In another embodiment, the frame may be oriented substantially vertically, or oriented in equal measure vertical and horizontal and/or cuboidal, such that frame size, shape, or orientation is not limiting.
One aspect of the present invention is to provide the user the ability to store, carry, and transport personal items. A variety of storage options may be utilized including a ridgid box compartment, a soft fabric basket, wire basket, one or more cup holders, mesh webbing or netting, or a slim pocket. For example,
A first glide 2167 is affixed to the second end of the first leg element 2110, and a second glide 2169 is affixed to the second end of the second leg element 2120. At least one front bracing element 2122 has a first end and second end, wherein the front bracing element first end is affixed to the first leg 2110 element and the front bracing element second end is affixed to the second leg element 2120. A first side bracing element 2121 having a first end and second end, wherein the first end of first side bracing element 2121 is affixed to the arcuate first leg element 2110, and the second end of the first side bracing element 2121 is affixed to a different position on the the arcuate first leg element 2110. A second side bracing element 2123 having a first end and second end, wherein the first end of the second side bracing element 2123 is affixed to the arcuate second leg element 2120, and the second end of the second side bracing element 2123 is affixed to a different position on the arcuate second leg element 2120. A handle 2115 is shaped to define a first end and a second end, wherein first end is affixed to said front bracing element 2122, and second end terminates in a grip 2135.
The term “glides” as used herein is to be construed expansively. Any termination of leg, permitting leg to be moved against a floor surface is considered a “glide” including leg footings, glides typically used on walkers or walk assist devices, tennis balls, or other structure permitting the leg to traverse the ground.
Likewise, the term “grip” as used herein is to be broadly construed as an surface capable of being held by the human hand and permitting reasonable operation of the device. In one embodiment, the grip may be merely the termination of the handle element aptly positioned to be gripped by the hand.
It should be noted that compartments as disclosed herein may be disposed in contact with the apparatus in any way and specifically may attach to the frame, the legs, the handle, or to any bracing independently or cooperatively. It should be noted that the inventive compartment may be affixed or formed contiguous with any part of device and may be affixed or reversibly attachable.
Various embodiments are herein disclosed in illustrations and descriptions for illustrative purposes recognizing that various combinations of may be used together or independently. Any combination of features and elements disclosed in the various drawings and specifications herein, that may be used together with other features and embodiments in other portions and illustrations of this disclosure, are considered part of the scope of this invention. Furthermore, certain aspects of embodiments disclosed herein may be omitted from certain embodiments without departing from the spirit and scope of the inventive disclosure.
It should be noted that various embodiments of the present invention may be applied in a variety of settings including individual use, rehabilitation, nursing home facility or hospital use.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various modifications and variations can be easily made by those skilled in the art without departing from the scope and spirit of the invention. Accordingly, the foregoing disclosure should be interpreted as illustrative only and is not to be interpreted in a limiting sense. It is further intended that any other embodiments of the present invention that result from any changes in application or method of use or operation, method of manufacture, shape, size, or material which are not specified within the detailed written description or illustrations contained herein yet are considered apparent or obvious to one skilled in the art are within the scope of the present invention.
The application is claims priority to and is a national phase entry of PCT Application No. PCT/US2020/59593, titled “Rolling Cane,” filed Nov. 8, 2020, which claims priority to U.S. Provisional Patent Application Ser. No. 62/974,034, filed on Nov. 8, 2019, entitled “ROLLING CANE,” the contents of which are incorporated by reference herein in their entirety and made part of this specification.
Filing Document | Filing Date | Country | Kind |
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PCT/US2020/059593 | 11/8/2020 | WO |
Number | Date | Country | |
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62974034 | Nov 2019 | US |