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DUAL LAYER ACTIVE INSOLE FOR DIABETIC FOOT ULCER PREVENTION

Details

Project TitleDUAL LAYER ACTIVE INSOLE FOR DIABETIC FOOT ULCER PREVENTION
Track Code2016-035
Websitehttp://www.uta.edu/research/_docs/otm/All%20Marketing%20Summaries/16_35_mktg_02_09_2017.pdf
Short DescriptionNone
AbstractNone
 
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Posted DateAug 24, 2017 5:07 PM

Manager

Name
Sharon Ngwenya

Technology Need

Up to 25% of patients with diabetes develop a foot ulcer. More than half of all foot ulcers become infected, requiring hospitalization and 20% of infections result in amputation. People with a history of a diabetic foot ulcer (DFU) have a 40% greater 10-year death rate than people with diabetes alone. Early and effective management of DFU can reduce the severity of complications such as preventable amputations and possible mortality. Based on studies, a means of redistributing mechanical stresses such as pressure and shear on the plantar surface of the foot should always be a part of DFU management. Several footwear designs have been implemented to reduce pressure on the foot of diabetic patients, yet the prevention of foot ulcer has been marginal in most cases.

Invention Description/Solution

Researchers at the University of Texas have developed an active dual layer insole for diabetic foot ulcer prevention. The insole uses an automated pressure modulation approach for periodically regulating and redistributing the cyclic mechanical loading to the foot. The insole comprises a pressure distributing overlay, a pressure modulating layer and a control unit. The pressure distributing layer is made of soft flexible material. The pressure modulating layer contains fluid filled cells which are divided into two types: active cells and passive cells. The Passive cells remain at the same level of inflation after initial fitting, whereas active cells modulate their internal pressure periodically to reduce mechanical loading to the stressed areas of the foot. 

Commercial Applications

  • Prevention of diabetic foot ulcer
  • Prevention of stress fractures
  • Wound healing (in diabetic offloading boots and/or total contact casts)
  • Pain relief in rheumatoid arthritis patients

Competitive Advantages

  • Reduce localized pressure and shear through improved fitting strategy
  • Automated system that can alter the gait pattern without patient’s intervention
  • Facilitates the blood perfusion and reduces prolonged cyclic mechanical loading by periodically modulating and redistributing pressure and shear on the plantar surface of the foot

Stage of Development

Prototype and tested

Related Technologies

Meet Our Inventor

Intellectual Property

Patent Number Issue Date Type Country of Filing
62/426,896 None Provisional United States