The present disclosure generally relates to rehabilitation devices, and in particular, to a system and associated method for providing correctional postural feedback through a rehabilitation device.
Midline Shift Syndrome (MSS), also known as Pusher Syndrome, is a condition that affects individuals who experience neurological events such as a Traumatic Brain Injury (TBI), Cerebrovascular accident (CVA), Multiple Sclerosis (MS), strokes, etc. MSS causes those affected to lean their body away from the non-paralyzed side on a continual basis due to a change in patients' perception of their body's orientation. This change in perception causes patients to feel that their body posture is upright, whereas, in reality, it is leaning towards the side of the brain lesion. Clinicians trained in rehabilitation techniques who work with these individuals expressed the need for a cost-effective, automated method that can be used to treat Midline Shift Syndrome by helping patients to relearn where their midline position is located, whether rehabilitation sessions be conducted in their medical establishment or in the comfort of the patient's own home. Currently, clinicians have to use manual means for providing haptic feedback to their patients, meaning they use tools such as massage wands and have to physically press such a device onto particular regions of the patient's body as the patient observes themselves in a mirror. This manual technique results in subjective reporting of patient recovery progress.
It is with these observations in mind, among others, that various aspects of the present disclosure were conceived and developed.
The present patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.
Corresponding reference characters indicate corresponding elements among the view of the drawings. The headings used in the figures do not limit the scope of the claims.
Various embodiments of a user-friendly system including at least one device for stroke and other brain injury patients to assist the patients in relearning midline position through a haptic-feedback mechanism are disclosed herein. There are several ongoing therapies that utilize rehabilitation devices under the supervision of skilled therapists, but the objective of this system is to reduce the need for manually applied haptic techniques and improve measurement of patient progress. The system's wearability meets both functional and usability requirements by targeting the torso and neck to provide gentle feedback to the patient. The system includes multiple integrated devices that detect the patient's position in space and provides both visual and haptic cues to the patient and help them reorient back to their midline position.
Referring to
Since the vest 102 and the vibration pads 140 function together in controlling the midline shift of the upper extremity, a separate component can be used to assess and control the head movements. The neckband 160 is a comfortable soft-robotics wearable that incorporates both an IMU sensor 164 to detect the head position and one or more vibration motors 162 to provide haptic feedback on the neck region. The smart mirror 180 acts as an additional interactive device that provides visual feedback to the patients by communicating with the vest 102 and the neckband 160. The smart mirror 180 can include a microcontroller 186 and a display monitor 182 arranged with one or more feedback displays 184 that can include one or more lights such as LEDs, and can provide color sequencing, e.g., portions of the feedback displays 184 can illuminate in various colors to provide visual cues to aid the patient in shifting back to a midline position.
While products such as smart mirrors are relatively easy to modify for resolving Midline Shift Syndrome (MSS), due to their lack of haptic feedback, they do not act on the muscle memory of the body to provide haptic feedback. For example, the Truweo “Posture Corrector for men and women” is a current alternative that utilizes traditional methods to retrain the body to maintain correct posture. However, when working with MSS patients, forcing the body into position without the proprioception of the mind does not appear to work in recreating the midline perception (meaning without visual cues). Many users of Truweo also shared that the product is uncomfortable and that when the straps move, it leaves marks on the skin.
Other products that have been determined to be more appropriate and less intrusive are the Wearables Upright Go 2, Lumo Lift, and POSDOT “Posture Corrector Digital Sensor Device for Women and Men”. Although the intent of these strapless technologies is to coach their users by utilizing exercises and vibrations—they fail to do so in practice for MSS. This is due to the fact that in able-bodied individuals, it builds reliance on such technologies without having the users learn proper posture and orientation. In the instance of MSS, it is imperative that patients relearn the midline orientation through haptic and visual cues. Additionally, these devices do not take into consideration day-to-day tasks that might require movement, meaning it can incorrectly trigger the warning signals of the device. In individuals with MSS, these present even more of a challenge than a sustainable, long-term solution. Such a device does little to support these individuals to relearn their midline perception and instead can lead to a constant annoyance since they are frequently orienting away from their midline position unlike able-bodied individuals who may only need a reminder now and then to correct their posture. Thus, the disadvantages are the calibration process and the body attachment system.
In one example, the wearable vest 102 is lightweight, but at the same time supports the integration of sensors and actuator elements. The wearable vest 102 is also easy for the patient to wear on their body and should feel comfortable when worn on top of clothing. One possible feature of the wearable vest 102 is to be formed by way of a flexible design with features to adjust to different body profiles.
Referring to
The vibration pads 140 provide passive feedback to the patient when the orientation of their body deviates from their midline position. In some embodiments, the wearable vest 102 includes two vibration pads 140 removably coupled to the wearable vest 102, each vibration pad 140 defining a body 141 with a hook-and-loop fastener 148 (or another suitable fastener such as snaps) side. Each pad has a circular array of vibration motors 142 placed on the side of the torso right below where the sternum of the ribcage is located and another rectangular array of vibration motors 142 located near the corner shoulder region as seen in
The locations of the vibration motors 142 were selected as the sensation of touch is relatively higher compared to other body parts in stroke patients. The vibration pads 140 can also be filled with foam to reduce the effect of the vibration motors 142 on the sensitivity of the IMU sensors 120 and also to give a snug fit for the patients. The left and right sides of the vibration pads 140 are joined together at the torso region above the waistline using buckle belt straps 146. Vibration pads 140 can be removable from the vest 102 so that the vest 102 can be washed and reused after therapy sessions.
Although the vest 102 and vibration pads 140 can cover the torso area, they do not take into consideration neck movement during the midline shift. However, the system 100 can also track the neck orientation. For example, the neckband 160 is intended to have a cozy fit and provide proper grip around the neck. In some embodiments, the neckband 160 provides a comfortable flexible lateral movement of the head. A flexible rubber-based material may be used for the spinal element in the neckband 160 that is shown in
The hardware design of the smart mirror 180 includes a two-way acrylic sheet in which the patient will be able to see what is displayed on an integrated screen as well as their reflection. In some embodiments, a frame of the smart mirror 180 can include a polymer plastic strip with squared corners, although other variations are considered for cosmetic purposes. In some embodiments, the smart mirror 180 can include a stand base for the smart mirror 180 in instances where the therapist or patient cannot prop the smart mirror 180 against a wall. A monitor 182A that displays orientation can be mounted on the top of a two-way mirror 181 as shown in
The smart mirror 180 can act as an additional aide for providing visual cues to the patient in shifting back to the midline position. Hence, the smart mirror 180 provides a visual feedback system. The smart mirror 180 includes a microcontroller 186 (
The smart mirror 180 indicates a shift in position from the midline as a means for providing visual feedback to the patient. As shown in
Electronics play a role in the overall operability of the system 100.
In one embodiment of the wearable vest 102, a total of 20 coin-sized vibration motors 142 can be used, which turn on (1=HIGH) and off (0=LOW). The number of vibration motors 142 can be defined according to the amount of vibration that would theoretically be required for effectively supplying adequate haptic feedback to the patient. However, this requires trials and testing before confirming the exact number of vibration motors 142 that should be used on each side of the wearable vest 102. Trials were not conducted due to COVID-19, meaning human trials were not possible at the time to determine the exact number of motors required for the wearable vest 102.
In one embodiment of the neckband 160 (hardware shown in
Software application flow and control can be handled by both the microcontroller 186 of the smart mirror 180 and the central processor 110 of the system 100 and is illustrated in process flow 200 of
The system 100 can further include a mobile application that can be used to monitor and record patient progress. This reporting system enables clinicians and patients to more accurately track recovery progress, a key component which has inhibited insurance companies from paying for treatment with the current manual techniques that are used. One of a mobile application for the device can be observed in
Device 300 comprises one or more network interfaces 310 (e.g., wired, wireless, PLC, etc.), at least one processor 320, and a memory 340 interconnected by a system bus 350, as well as a power supply 360 (e.g., battery, plug-in, etc.).
Network interface(s) 310 include the mechanical, electrical, and signaling circuitry for communicating data over the communication links coupled to a communication network. Network interfaces 310 are configured to transmit and/or receive data using a variety of different communication protocols. As illustrated, the box representing network interfaces 310 is shown for simplicity, and it is appreciated that such interfaces may represent different types of network connections such as wireless and wired (physical) connections. Network interfaces 310 are shown separately from power supply 360, however it is appreciated that the interfaces that support PLC protocols may communicate through power supply 360 and/or may be an integral component coupled to power supply 360.
Memory 340 includes a plurality of storage locations that are addressable by processor 320 and network interfaces 310 for storing software programs and data structures associated with the embodiments described herein. In some embodiments, device 300 may have limited memory or no memory (e.g., no memory for storage other than for programs/processes operating on the device and associated caches).
Processor 320 comprises hardware elements or logic adapted to execute the software programs (e.g., instructions) and manipulate data structures 345. An operating system 342, portions of which are typically resident in memory 340 and executed by the processor, functionally organizes device 300 by, inter alia, invoking operations in support of software processes and/or services executing on the device. These software processes and/or services may include midline correction processes/services 200A, which may include the same or similar functions as the process flow 200 described herein. Note that while midline correction processes/services 200A is illustrated in centralized memory 340, alternative embodiments provide for the process to be operated within the network interfaces 310, such as a component of a MAC layer, and/or as part of a distributed computing network environment.
It will be apparent to those skilled in the art that other processor and memory types, including various computer-readable media, may be used to store and execute program instructions pertaining to the techniques described herein. Also, while the description illustrates various processes, it is expressly contemplated that various processes may be embodied as modules or engines configured to operate in accordance with the techniques herein (e.g., according to the functionality of a similar process). In this context, the term module and engine may be interchangeable. In general, the term module or engine refers to model or an organization of interrelated software components/functions. Further, while the midline correction processes/services 200A is shown as a standalone process, those skilled in the art will appreciate that this process may be executed as a routine or module within other processes.
It should be understood from the foregoing that, while particular embodiments have been illustrated and described, various modifications can be made thereto without departing from the spirit and scope of the invention as will be apparent to those skilled in the art. Such changes and modifications are within the scope and teachings of this invention as defined in the claims appended hereto.
This is a non-provisional application that claims benefit to U.S. Provisional Application Ser. No. 63/307,832, filed on Feb. 8, 2022, which is herein incorporated by reference in its entirety.
Number | Date | Country | |
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63307832 | Feb 2022 | US |