DYNAMIC FITTING SYSTEM FOR LOWER-LIMB PROSTHESES

Award Information
Agency: National Science Foundation
Branch: N/A
Contract: N/A
Agency Tracking Number: 27595
Amount: $58,799.00
Phase: Phase I
Program: SBIR
Awards Year: 1994
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Synergy Research Corp.
Po Box 5056, Hanover, NH, 03755
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Robert C Dean Jr
 (603) 448-6322
Business Contact
Phone: () -
Research Institution
N/A
Abstract
TODAY, PROSTHETISTS HAVE DIFFICULTY IN OPTIMIZING LOWER-LIMB AMPUTEES' SOCKET FIT BECAUSE SCIENTIFIC MEANS FOR ESTABLISHING SOCKET GEOMETRY ARE LACKING. A PRECISE FIT TO THE AMPUTEE'S STUMP IS THE MOST CRITICAL FEATURE OF A LOWER-LIMB PROSTHESIS. FURTHER, WHEN THE AMPUTEE'S STUMP VOLUME CHANGES, THERE IS NO SATISFACTORY METHOD TO ADJUST THE SOCKET FOR A COMFORTABLE FIT. POOR SOCKET FIT RESULTS IN TISSUE TRAUMA, PAIN, AND THE HIGH EXPENSE OF NUMEROUS FITTINGS. THE AMPUTEE'S QUALITY OF LIFE IS DEGRADED. A PRECISE SOCKET-FITTING SYSTEM IS URGENTLY NEEDED FOR MAKING THE INITIAL SOCKET COMPENSATE FOR THE FACT THAT STUMP VOLUME CAN CHANGE BY AS MUCH AS 10-15 PERCENT OVER TIME DUE TO INITIAL ATROPHY, WEIGHT LOSS, DIET, MENSTRUATION, DIALYSIS, ETC. A CHANGE OF AS LITTLE AS 1 PERCENT VOLUME CAN CAUSE DISCOMFORT. TO MEET THIS NEED, A UNIQUE, DYNAMIC, SOCKET-FITTING SYSTEM THAT INTEGRATES SURFACE-PRESSURE MEASUREMENTS WITH THE VARI-GEOMETRY SOCKET IS BEING INVESTIGATED. THIS RESEARCH WILL INNOVATE A MUCH-NEEDED DIAGNOSTIC TOOL FOR THE PROSTHETICS PROFESSION, AND RELIEF FOR THE AMPUTEE FROM PAIN AND UNNECESSARY EXPENSE. AN IMPORTANT ANCILLARY RESULT IS A SCIENTIFIC DATABASE TO REDUCE THE TIME AND EXPENSE TO INITIALLY FIT THE SOCKET TO THE PATIENT.

* information listed above is at the time of submission.

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