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A Device to Monitor Toe Walking in Children with Cerebral Palsy

Award Information
Agency: Department of Health and Human Services
Branch: National Institutes of Health
Contract: 1R44HD055715-01
Agency Tracking Number: HD055715
Amount: $123,540.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Solicitation Year: N/A
Award Year: 2007
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
SIMBEX, LLC 10 Water Street
United States
DUNS: 015704559
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 (603) 448-2367
Business Contact
Phone: () -
Research Institution

DESCRIPTION (provided by applicant): This goal of this SBIR project is to quantify and validate the feasibility and potential for a non- obtrusive, wearable, in-shoe gait-monitoring device for children with Cerebral Palsy (CP). It is hypothesized that con
tinuous monitoring and analysis of simple gait parameters in children with CP outside the clinical laboratory and during normal daily activities will provide clinically useful outcomes data that are not currently available and critical diagnostic data for
determining intervention timing. There is a clinical need for objective, quantitative data to assess the severity of toe walking and its progression over time as the child develops and intervention strategies are implemented to improve his/her mobility. Al
so, extending such assessment to the home and community settings is critical in order to allow clinicians to evaluate whether clinical interventions are effective in improving mobility outside of the clinic and overall the quality of life of the child. The
key innovation is the development of a miniature extremely low-power data acquisition/recording device, which can be worn non-obtrusively by children with CP during activities of daily living (ADL's) to measure ankle angle and center of pressure trajector
ies during ambulation. In Phase I, hardware/software development and validation will be followed by a pilot study of children with CP to compare measured in-shoe gait parameters against gold- standard laboratory kinematic and kinetic data. Data clustering
techniques will be employed to determine the feasibility of classifying these motor tasks from the in-shoe monitoring data alone, and to identify different ambulatory activities (i.e. level walking, ramp ascending and descending, and stair ascending and de
scending). In Phase II, the hardware is incorporated into the sole of a sneaker, a multi-stage classifier is developed and validated, and a pilot longitudinal study is performed to evaluate the development of a novel Toe Walking Severity (TWS) index. The l
ong-term goal of this research and development project is to address clinical problems associated with objective quantification of gait abnormalities and the success of clinical interventions by developing low cost, readily available in-shoe monitoring too
ls and analysis methods to quantify longitudinally the severity of toe walking outside the clinic environment. If successful, the proposed technology carries significant potential for monitoring gait in patients affected by other pathologies in which gait
parameters are expected to change over time as a function of the progression of the disease (e.g. shuffling in patients with Parkinson's disease, progressive loss of ankle control in patients with multiple sclerosis). The proposed ActiveGait device provide
s the enabling technology to continuously monitor toe walking at home. Outcome measures quantifying the success and timing of clinical interventions for toe walking will be developed based on extremely large data gathered from the individual's walking at h
ome and over long periods of time. If technically and economically feasible, the additional up-front cost of the monitoring system in the shoe will be far outweighed by reduced health care costs associated with treatment and rehabilitation for toe walking.

* Information listed above is at the time of submission. *

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