Design of an Intelligent Compression Stocking for Reducing Ulcer Healing Time

Venous leg ulcers remain a problem in the United States, costing the health care industry nearly $1 billion annually. A major portion of this spending is incurred as a result of prolonged healing time. Compression therapy is known to promote recovery. This technique may be improved by allowing for dynamic customization of treatment parameters. The design of a sensing system for an intelligent compression stocking is described in this thesis. This sensing system will eventually serve as a means by which to quantify the performance of the stocking through the continuous measurement of key physiological variables. Blood flow velocity will be measured using an acoustic array, and leg volume will be quantified using bio-impedance techniques. Preliminary experiments were conducted in order to verify the responsiveness and practicality of using these technologies to monitor ulcer healing. The Edema Monitoring System was capable of resolving small changes in leg volume resulting from artificially-induced swelling. Unfortunately, the Acoustic Blood Flow Measurement System did not perform acceptably in terms of accuracy and robustness. Future directions for this technology include finding a more acceptable means by which to measure blood flow velocity, improving the sensing system by incorporating additional optimization parameters, exploring the use of alternative actuation mechanisms, and expanding its use to encompass all medical-grade compression stockings.

Author dc:creator

• Hegarty, Meghan Sarah

Advisors dc:contributor.advisor

• Dr. Edward Grant, Committee Chair
• Dr. Carol Giuliani, Committee Member
• Dr. Brooke Steele, Committee Member

• compression therapy
• venous leg ulcers
• auscultation
• bio-impedance
• monitoring edema
• monitoring blood flow velocity

Statement dc:rights

• I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dis sertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to NC State University or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.

Dc Identifier Other

etd-02252008-110213

OAI record oai:identifier

https://repository.lib.ncsu.edu/server/oai/request?verb=GetRecord&metadataPrefix=dim&identifier=oai%3Arepository.lib.ncsu.edu%3A1840.16%2F1832