Batelle Memorial Institute and Orthocare Innovations, Llc | Date: 2013-05-02
A hydraulic device includes a first plate that pivots in a first direction, a second plate that pivots in a second direction orthogonal to the first direction, a first hydraulic system comprising a first cylinder and piston, a second cylinder and piston and, channels connecting the first cylinder to the second cylinder, the first hydraulic system filled with hydraulic fluid, wherein the transfer of fluid between the first cylinder and second cylinder pivots the first plate, and a second hydraulic system comprising a third cylinder and piston, a fourth cylinder and piston and, channels connecting the third cylinder to the fourth cylinder, the second hydraulic system filled with hydraulic fluid, wherein the transfer of fluid between the third cylinder and fourth cylinder pivots the second plate.
Orthocare Innovations, Llc | Date: 2012-07-02
A prosthesis socket is fitted with a viscoelastic memory material. The material can aspirate a fluid to decrease the interior volume of the socket to compensate for residual limb volume decreases, and fluid can be removed from the viscoelastic memory material to increase the interior volume of the socket to compensate for residual limb volume increases.
Orthocare Innovations, Llc | Date: 2012-07-02
A prosthetic foot assembly is disclosed. The assembly includes a pivoting ankle joint with a hydraulic system, a prosthetic foot connected to the distal side of the ankle joint, and, at the proximal side, the ankle joint includes a transducer with pyramid adaptor for attaching to a pylon. The ankle joint sensor provides data collection during the stance and optionally, the swing, phases of walking using, for example, strain gages and accelerometers. Also disclosed are methods for real-time feature extraction. Key parameters are captured to which are applied linear, fuzzy logic, neural net, or generic algorithms to determine current state (walking flat, uphill, downhill etc.) in real time and execute changes to the angle between the ankle and foot almost instantaneously based on those parameters.
Orthocare Innovations, Llc | Date: 2014-06-17
A computerized prosthesis alignment system includes a transducer that can measure socket reactions in the anterior/posterior plane and the right/left planes, while canceling or reducing the transverse forces on the measurements of these socket reactions. In addition, the transducer is also capable of determining the axial load or weight experienced by the prosthesis. The computerized prosthesis alignment system is in communication with a host computer. The moment data from the transducer is interpreted by the user via a computer interface. The host computer includes memory for storing one or more applications. These applications receive data from the transducer, interpret the data with discrete algebraic or fuzzy logic algorithms, and display the output numerically and graphically. Applications may also interpret the data to provide analyses to the user for aligning the prosthesis.
Orthocare Innovations, Llc | Date: 2013-04-01
A robotic prosthesis alignment device is disclosed that may automatically move the alignment of a prosthesis socket in relation to a prosthesis shank. The robotic prosthesis alignment device provides automatic translation in two axes. The robotic prosthesis alignment device includes angulation mechanics that automatically provide for plantarflexion, dorsiflexion, inversion, and eversion of the foot and shank with respect to the prosthesis socket. A surrogate device is also disclosed that can replicate the alignment achieved with the robotic prosthesis alignment device.
Agency: Department of Health and Human Services | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 220.05K | Year: 2014
DESCRIPTION (provided by applicant): Power absorption and generation at the ankle is critical to gait efficiency, joint health, and safety. For amputees, it's also an important factor n residual limb health. Recently, research and commercial efforts haveresulted in powered foot-ankle systems, which provide powered- plantarflexion electromechanically, reduce metabolic costs of walking, and show reductions in pathological loading of the contralateral limb. However, these devices are complex, expensive, heavy, and physically large - all factors which limit widespread adoption. The objective of the energy-harvesting mesofluidic impulse prosthesis (e-MIP) is to create an inexpensive, lightweight foot-ankle system which doesn't require a net energy input for powered plantarflexion and swing-phase dorsiflexion. The energy density and bandwidth of high pressure, meso-scale hydraulics enables an ankle that can seamlessly harvest the energy normally dissipated in gait; store it in fluid-accumulators; and reapply
Agency: Department of Health and Human Services | Branch: | Program: SBIR | Phase: Phase II | Award Amount: 1.22M | Year: 2012
DESCRIPTION (provided by applicant): The Advanced Biofidelic Lower Extremity Kids prosthesis (ABLE Kids) project will advance the state-of-the-art of pediatric prosthesis systems by advancing the demonstrably successful Phase I device and refining it intoan ultracompact and lightweight form factor suitable for pediatric use. Through the support of the Shriner's Hospitals in Salt Lake City, UT and Shreveport, LA, numerous prosthetists, and with the consultation of cutting edge researchers at Clarkson University, a highly adaptive device will be produced and commercialized suitable for childhood amputees with both traumatic and congenitial deficiencies. Specifically, ABLE Kids will result in a modular, microprocessor controlled, mesofluidic ankle joint thatdynamically makes ankle control adjustments needed to optimize the dynamic function and safety of a child's prosthesis. Additionally, advanced algorithms will be developed to optimize the performance of non microprocessor controlled knees by adjusting ground reaction forces to optimize trigger point and release for knees in transfemoral pediatric subjects. PUBLIC HEALTH RELEVANCE: This project will advance the state of the art for lower limb prostheses for children. Novel mesofluidic technology and control algorithms will be used to make miniaturized microprocessor controlled hydraulic ankle joint system. The result will be improved function and decreased problems for children with limb loss.
Agency: Department of Health and Human Services | Branch: | Program: SBIR | Phase: Phase II | Award Amount: 1.30M | Year: 2012
DESCRIPTION (provided by applicant): Stiffness and alignment of ankle-foot orthoses (AFOs) should be tuned optimally to maximize their function. Improperly tuned AFO may induce joint pain, reduced ambulatory function, and increased medical complications for patients with stroke. Therefore, the relative quality of AFOs fit determined by its stiffness and alignment is of paramount concern in the daily lives of patients ambulating with an AFO. However, no clinical tool is currently available that can objectively guide orthotists to tune the AFO. This has led frequent mismatches between the needs of the patient and the delivered orthosis. The objective of the proposed work is to develop a novel system for AFOs called the Computerized Orthotic Prescription System (COPS). COPS assists orthotists in tuning the AFO stiffness and alignment dynamically in patients with stroke. COPS consists of a diagnostic AFO, intuitive clinical software and a custom-made modular AFO. The diagnostic AFO and the clinical software areused to select optimal components for the custom-made modular AFO delivered to each patient. The diagnostic AFO allows fine- tuning of stiffness and alignment and monitors ankle joint moment and motion. The data will be wirelessly transferred to the computer and the clinical software will instruct how the stiffness and alignment of an AFO should be adjusted. Once the tuning of the diagnostic AFO is completed, the software recommends which components should be selected for the modular AFO. The COPS will give confidence to both orthotists and patients and also significantly reduce time for the iterative process of stiffness and alignment tuning of a AFO. PUBLIC HEALTH RELEVANCE: This project will develop a system that can assist and improve the prescription of ankle-foot orthoses (AFOs) for patients with stroke. The technology will objectively guide the orthotists to determine the optimal stiffness and alignment of AFOs to maximize their dynamic function for each patient in an expedient and cost-effective manner.
Agency: Department of Health and Human Services | Branch: | Program: SBIR | Phase: Phase II | Award Amount: 769.71K | Year: 2011
DESCRIPTION (provided by applicant): The fit of a prosthesis determines the function of the user to a great degree. In the extreme, a painful fit will result in non-use of the prosthesis. Diurnal, menstrual and other fluctuations in body weight lead to noticeable changes in comfort and function of a prosthesis. As a consequence, the relative quality of socket fit determined by socket volume is of paramount concern in the daily lives of persons with limb loss The objective of the proposed work is to build on the demonstrably successful Phase I effort to develop an Equilibrium Socket System (ESS) for Lower Limb Prostheses. The Phase I work undertaken by the Orthocare Innovations team has resulted in identification successful demonstration of an approach thatcan be developed into a clinically relevant, commercially viable system for dynamically adjusting prosthesis sockets. While both socket volume, and vacuum suspension systems have been developed previously, the approaches taken often work against each otherand sometimes against normal physiological change. The unique feature of the ESS is that combines both autonomous and user adjustable level of dynamic volume accommodation using a simple mechanism, coupled with a silent, dynamically adjusting vacuum suspension system. The system will allow both the prosthetist and the patient to control socket volume changes and suspension in a way that accommodates normal volume fluctuation. The technology will enable the patient to participate more fully by directly controlling adjustments based on what they feel. In the proposed work, we will design and build the definitive system from the lessons learned in Phase I, evaluate performance and feasibility with human subjects, review the results with the subjects and colleagues in clinical prosthetics, and transition the final design to manufacture. PUBLIC HEALTH RELEVANCE: This project will improve the fit and function of prostheses by creating a dynamically and automatically adjusting socket interface with the amputated limb. The technology will allow the prosthesis user to adjust the firmness of the fit of their prosthesis quickly, easily, and in a more precisely controlled manner than is currently possible.
Agency: Department of Health and Human Services | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 207.21K | Year: 2011
DESCRIPTION (provided by applicant): Stiffness and alignment of ankle-foot orthoses (AFOs) are essential factors for its optimal function and fit. Improper stiffness and alignment of an AFO may induce joint pain, reduced ambulatory function, and increasedmedical complications for patients with stroke. As a consequence, the relative quality of AFOs fit determined by its stiffness and alignment is of paramount concern in the daily lives of patients ambulating with an AFO. The objective of the proposed workis to create and demonstrate a novel system for AFOs called the Computerized Orthotic Prescription System (COPS), which assists orthotists to optimize the dynamic function of AFOs for patients with stroke. COPS assists orthotists in tuning the AFO stiffness dynamically and aligning the AFO statically. The concept of the COPS is as follows. It consists of an instrumented insole, a tunable AFO with a magnetro-rheologic fluid brake joint and software. The inclinometer incorporated within the AFO is used to tune alignment to a defined angle statically. The instrumented insole is designed to calculate the external moments acting on the ankle joint while wearing the AFO. The software subsequently analyzes the data sent wirelessly from the insole and gives recommendations to orthotists on its stiffness change dynamically. In this study, we will refine the prototype instrumented insole and incorporate it into the tunable AFO, develop a stiffness prediction algorithm for the software, and clinically test the proof ofconcept of COPS. Development of the stiffness prediction algorithm will be based on our experience on the previous project: the Computerized Prosthesis Alignment System (Compas). The fuzzy logic algorithm for prediction of improper stiffness will be developed through input of data collected for known stiffness deviations. Finally, proof of concept will involve the investigation of the effectiveness of COPS to detect sub-optimal stiffness conditions and the ability of COPS to indicate appropriate remediationto the orthotist. If successful, COPS will give confidence to both orthotists and patients and significantly reduce time for the iterative process of stiffness and alignment tuning an AFO. PUBLIC HEALTH RELEVANCE: This project will assist and improve the prescription of ankle-foot orthoses (AFOs) for patients with stroke. The technology will objectively guide the orthotists to determine the optimal stiffness and alignment of AFOs to maximize their dynamic function for each individual patient.