The following is a tabulation of some prior art that presently appears relevant:
Daily, necessary activities such as driving or working at a computer can cause or exacerbate an improper postural position. Presently available car seats, office chairs, and other forms of seating may sometimes have ergonomic design elements, but can continue to cause unnatural posture that leads to compression of the thoracic outlet and shoulder regions. As an example, bucket car seats may cause an unnatural slouching posture. A prolonged slouching position while seated (such as, but not limited to, when typing at a desk or driving for extended periods of time) changes the length and flexibility of the stabilizing muscles (e.g., rhomboids, latissimus dorsi, trapezius, etc), of the upper quadrant (i.e., neck, upper back, and shoulder region). This can cause weakness in the stabilizing muscles and unnecessary contraction in the non-stabilizing muscles (e.g., scalenes, pectoralis minor/major, subscapularis, etc) in order to continually maintain the unnatural posture. The result is abnormal shoulder curvature and other non-natural positions, nerve and vascular compression and muscle fatigue—ultimately manifested as pain, numbness, and tingling in the user's extremities.
Ergonomic office chairs are an example of a partial solution. Though they may support the lumbar region, they fail to provide the upper quadrant support needed to help prevent non-stabilizing muscles from contracting. Thus, in the case of working at a computer, the situation can be exacerbated by typing on a keyboard, causing increased worker fatigue. Lumbar supports for use in a vehicle also fail to provide upper quadrant support. In the case of driving, the situation is further exacerbated by gripping a steering wheel, causing further driver fatigue.
Previous support devices and/or cushions have limited the design to support lumbar or sacral regions only, and/or not provided enough adjustability or customization to remedy underlying cause of the situation. Previous devices and/or cushions that do offer support to the thoracic and/or cervical spine do so by placing a cushion or support between the scapulae along the thoracic spine or with supports that are positioned horizontally across sections of the back. When a user leans against them, these designs serve to force the spine or back to conform to the shape of the support. While some may be portable or modular in design, or supporting part or all of the spinal region, presently available seat/back rests/supports are still lacking the design and functionality needed to appropriately address the user's cause of distress. The designs of previously existing support devices need improvement in order to properly support the user.
There is therefore a need in the art for improved postural support device designs that support the shoulders in their naturally retracted position, thereby improving muscular stability, increasing circulation and decreasing pain and fatigue.
The following figures illustrate this embodiment.
These embodiments provide for a postural support device that is adjustable, modular, and portable. The device may be referred to interchangeably as “device”, “support device”, “postural support device” or “adjustable postural support device”. The adjustable, modular, and portable support device is designed to provide musculoskeletal support by minimizing instability of muscles and directly supporting the scapulae. Such instability may result in abnormal shoulder curvature and other non-natural positions when seated for extended periods of time. The support device, by virtue of its design, can provide relief for individuals suffering from many ailments, such as, but not limited to: thoracic outlet syndrome (TOS), carpal tunnel syndrome (CTS), hypermobility, repetitive stress injury (RSI), soft tissue inflammation, shoulder impingement, fibromyalgia, and myofascial pain syndrome.
The device due to its unique, customizable, adjustable and modular shape helps support the scapulae directly, resulting in a person's thoracic and cervical regions to become properly aligned in a neutral position. Muscles, such as subscapularis and pectoralis major/minor, that were previously contracted causing scapular instability, are relieved from overwork when the scapulae are retracted towards neutral position. Thus, an improvement to spinal and scapular support is achieved.
The device in a first embodiment is designed to be portable, such that it can be used in seating found in cars, planes or other forms of transport, as well as in chairs in the home, office, or other places where one needs to sit. Removable straps and a high friction backing ensure that it can be secured for use in a variety of environments without slippage.
The device is also designed to be adjustable and modular, to enable the support provided to the user to be customized in a variety of ways. For example, a user undergoing physical therapy for the abovementioned ailments may wish to make adjustments to the amount and location of support as his or her muscles progressively improve their stability and alignment from treatment. In another example, a user with asymmetrical winged scapula may desire additional support on one side and less support on his or her other side. A process as detailed in this application may be applied for each individual user to obtain a customized fit.
Therefore, in comparison to other designs known in the art, various aspects of the adjustable, modular support device may have one or more of the following advantages: to provide adjustable and customizable support to the user's upper quadrant, to allow the user's spine to take its naturally curved shape, to address multiple causes of poor posture, to be portable, to be usable in multiple seating arrangements (e.g., car, office, plane, etc.), to have a lightweight and sturdy design, to be adjusted by the user with ease, to be easily manufactured, to have a shape and design that does not restrict movement, to have a design that minimizes contact with the user's body, to have indications (including but not limited to markings) that allow user to “save” a desired configuration, to provide adjustable support that is customizable in a multitude of ways, including but not limited to: cross section, cross section shape, foam stiffness, height, length, separation, and curvature. Other advantages of one or more aspects will be apparent from a consideration of the drawings and ensuing description.
The adjustable supportive parts are joined via an attachment mechanism which provides infinite adjustability among these parts allowing a user to easily change and customize the configuration of the cushions and supports. An individual's complete device can consist of any combination of adjustable supportive parts.
The user slides the scapular supports 18 along the support members 16 to the desired location so that when the user is seated in a chair such that the support device is placed between the user's back and the chair, the scapular supports 18 may make contact with the user's scapulae so that proper scapular stability may be achieved by allowing the scapulae to adduct from the pressure applied by the user leaning against the scapular supports. The support members 16 may have designations so the user may clearly “save” the setting of the scapular supports 18 most ideal to him/her. The support members 16 may be made out of plastic, composite, or any lightweight material capable of bearing the load of the user when the user is seated against them. The scapular supports' 18 may be variable, and may be modified depending on user preferences, for example, but not limited to: foam, memory foam over a rigid core; gel pack over a rigid core, or just the rigid core. Other shapes that are effective in providing support may be used.
The user may place the wedge, if desired, on the seat. The user may then place the postural support against the seat back. User may adjust the separation distance and angle of the support members, the location of the scapular supports along the support members, the profile (via the tension adjustment 20), and secure the adjustments via the attachment mechanism of mounts 26 in place. The user may attach lumbar support and neck support, if desired, to the support members.
In some embodiments, the frame of the postural support device can be made out of any material that will provide sufficient support for components while still being easy to manufacture into the desired shape. In some embodiments, frame 10 may have an inverted-bulb like shape, with a wider base and narrower top, which may allow a user's arms to move freely on either side without obstruction while still providing adequate support for the cushion components. Support members 16 may be made out of cloth or other such material if the frame 10 is designed to directly bear load of the user 22 applied to the scapular supports 16. Any type of mechanisms known in the art can be used to connect the various parts to the frame or to each other. An embodiment may be made with adjustability for only some attributes (for example, but not limited to: allowing or not allowing rotation of support members; allowing or not allowing adjustment of curvature of support members, etc). In some embodiments, the cover material may not be meshed. In some embodiments, the frame 10 can be designed to make it free-standing, so that if a seat has no back rest, the user's weight can provide the necessary support required to create a backrest. In some embodiments, the device may itself comprise a permanent seat back of a chair or other seating apparatus such that it is not portable, as illustrated in
Whereas in the previous embodiment, the support structures were referred to as “support members 16” and “scapular supports 18”, in other embodiments, the supports may take other shapes (such as, but not limited to, oval, rectangular, elliptical, spherical, etc.). The support members 16 and scapular supports 18 may be designed as a single piece. The supports may be made out of any suitable material or materials capable of providing support to the user. In some embodiments, any design that allows the user 22 to adjust the curvature of the supports can be used to address this functionality, thereby eliminating the need for a tension adjuster 20. A design allowing independent adjustment of the curvature for each support may be used. The frame may be designed in any way that allows supports to be mounted and maintain their adjustability, such as but not limited to a “Y-like” shape where each “Y” arm extends toward a scapula or with a solid-backing surface to which the supports 18 may mount directly, which may eliminate the need for support members 16 altogether.
Optionally, additional supports can be added, such as for the lumbar and cervical regions. In various embodiments, these supports may be independently adjustable and may attach directly to the frame 10 or to support members 16. Multiple lumbar and cervical supports are also possible to better support the user. Any other design that allows adjustability can be implemented. Any other design that supports the thoracic/cervical regions and/or scapulae as described by these embodiments or otherwise may be used. Support members 16 may consist of any design that allows support of scapular supports 18. Scapular supports 18 may consist of any design that allows adjustability to suit user's needs. Material of the scapular supports 18 can be vary, and may change depending on user preferences, for example, but not limited to: foam, memory foam over a rigid core; gel pack over a rigid core, or just the rigid core. Other shapes that are effective in providing support may be used.
From the description above, a number of advantages of some embodiments of our postural support device become evident:
Two, independently adjustable supports (referred to as “support members 16” and “scapular supports 18” in previously described embodiments) allow the user to position each support as he/she desires; for example, one on either side of the thoracic spine or along the medial edge of either scapula as show in
The vertical orientation and oblong shape of the scapular supports 18 promote retraction of the scapulae when placed along medial edge of either scapula, as shown in
Customization is available in many ways such as but not limited to cross section, cross section shape, height, support material, length, etc. Some users may have muscular or other imbalances that could require different levels of support on each side. The user may find the benefits of one support placed along the length of each scapula rather than a single support placed between the scapulae or along the spine provides greater relief of symptoms.
Customization is aided by a customized fit process using user feedback to obtain optimal settings.
Lightweight materials aid in portability and ease of use for the user. Many users suffering from any of the conditions previously stated have limited dexterity, range of motion, and difficulty carrying objects.
The ability of the support device to maintain a desired configuration ensures the user can return to the seat without having to make readjustments.
While various embodiments have been described above, it should be understood that they have been presented by way of example only, and not limitation. The descriptions are not intended to limit the scope of the embodiments to the particular forms set forth herein. To the contrary, the present descriptions are intended to cover such alternatives, modifications, and equivalents as may be included within the spirit and scope of the embodiment as defined by the appended claims and otherwise appreciated by one of ordinary skill in the art. Thus, the breadth and scope of a preferred embodiment should not be limited by any of the above-described exemplary embodiments.
Thus the scope of the embodiments should be determined by the appended claims and their legal equivalents, rather than by the examples given.
The customized fit process for the postural support device may be designed to ensure that each user of the device receives an optimal fit, specific to his or her body.
The ability of the device to alleviate activity in non-supporting muscles can be measured using biofeedback and pain scales. Biofeedback is a technique by which a patient is able to recognize and eventually control involuntary processes by monitoring activity in real-time from electrodes attached to specific parts of the body. Biofeedback may also be used without electronics. For example, the user may become aware the muscles contracted if he or she is unable to breathe deeply and freely while using the device. This may be an indication that proper muscular and scapular stability has not yet been achieved. The user may also refer to a pain scale for feedback. The pain scale is a rating system used to subjectively measure a patient's level of pain. Together, these methods can be used to determine if the device is having its desired effect by rating the user's symptomatology before and after using the device. Multiple sessions over time may be required in order to train the user in identifying correct from incorrect muscle use. Alternatively, if electronic biofeedback is not available to the user, the user can rely on deep breathing and pain scales to assess the device's effectiveness.
Customizable parameters for the postural support device include, but are not limited to: support members 16: cross-sectional shape, profile, length, stiffness, centerline-to-centerline distance, stiffness, material; scapular supports: cross-sectional shape, length, diameter, profile, material, material density, stiffness, position, angle, centerline-to-centerline distance; neck/cervical and lumbar supports: cross-sectional shape, length, diameter, profile, material, material density, stiffness, position.
Step 1: Determine baseline parameters, such as but not limited to diameter, length, profile, etc.
Step 2: Select supports of desired material properties (material, stiffness, etc.) and dimensions taken from Step 1 and install complete device based on initial dimensions.
Step 3: Sit in chair without device and evaluate symptoms using pain scale and muscle activity using biofeedback and deep breathing.
Step 4: Sit in chair with device and evaluate symptoms using pain scale and muscle activity using biofeedback and deep breathing
Step 5: Assess response: If a positive response is felt (i.e., “no worse than with device”, or “better than without device”), increase time spent in chair with device and activity level (for example, use of computer or driving). A positive response may mean the user is able to breathe deeply and freely, sit without increase in symptoms, or have lessened muscle activity. Continue monitoring until user is able to complete a task (for example, drive to work, or type an email) without increasing symptomatology.
Step 6: Assess response: If a negative response (i.e., an increase in muscle activity, pain, or general feeling of “worse than before” or “worse than without device”) then the user 22 should be refitted and assessed again. The user 22 may be refitted in a number of ways, including but not limited to: adjusting the dimensions of the supports 18 to provide more or less scapular support; adjusting the location of the supports 18 either medially or laterally; adjusting the level of cervical and/or lumbar support, etc.
Step 7: Continue process until user is able to complete daily tasks with less or no negative response.
Refer to accompanying flow-chart to visualize process, shown in
Although the description above contains many specificities, these should not be construed as limiting the scope of the embodiments but as merely providing illustrations of some of several embodiments. Thus the scope of the embodiments should be determined by the appended claims and their legal equivalents, rather than by the examples given.
This application claims the benefit and priority of PPA Ser. No. 61/464,121, filed 2011 Feb. 26 by the present inventors, which is incorporated by reference.