About this item:

251 Views | 276 Downloads

Author Notes:

Corresponding Author: Dr Felmont F. Eaves III, 3200 Downwood Circle NW, Suite 640, Atlanta, GA 30327, USA. E-mail: feaves@emory.edu

The authors wish to thank and acknowledge Gary Knight, BS, MS, MBA, Timothy Dietz, BA, BSEE, MSEE, and Bill Clem, BS, MS, for their assistance in device development, design, and engineering.

Dr Kazmer is an Engineering Consultant of BRIJJITCO, LLC (Atlanta, GA), which produces the device described in this article, and has a financial interest in the firm in the form of convertible debt. Dr Eaves is the Founder and CEO of BRIJJITCO, LLC.

Subjects:

Research Funding:

The study and manuscript preparation were funded by Phase 2A, Phase 2B, and Phase III grants from the Georgia Research Alliance.

Keywords:

  • Science & Technology
  • Life Sciences & Biomedicine
  • Surgery
  • SKIN
  • SUTURES
  • SURGERY
  • FIBROBLASTS

Journal Title:

Aesthetic Surgery Journal

Volume:

Volume 38, Number 11

Publisher:

, Pages 1250-1263

Type of Work:

Article | Final Publisher PDF

Abstract:

Background Force modulating tissue bridges (FMTB) represent a new class of combined wound closure and scar reduction device designed to optimize the tension milieu of the healing wound. Objectives Engineering analysis and testing in both intact skin and incisional models was undertaken to assess changes in tissue tension associated with device placement and compare to standard suture closure. Methods Nonlinear, large deformation finite element analyses (FEA) were performed to compare the strains applied to tissues with sutures and FMTB. In the incisional model, a freshly euthanized Yorkshire pig received full thickness cutaneous incisions followed by alternating closure with sutures and FMTBs. FMTBs were also applied to intact adult human skin after pattern application. In each of the experiments, photographs were taken preapplication and postapplication and the resultant dot grid pattern changes were analyzed by image recognition algorithms to calculate applied strains. Results FEA indicate compressive stresses at the tissue:suture interface on the order of 4000 mmHg and 20 mmHg at the tissue:FMTB interface. Strain analysis of the sutures and FMTBs applied in the incisional lab testing indicated imposed strains on the tissues of around 40%, with FMTBs providing 10% more compression than sutures and 25% more compression between the applied devices (P = 0.000057). In the longitudinal study, tension reduction of the order of 30% was maintained over the treatment period of 10 days to verify device efficacy. Conclusions FMTBs provide wounds while simultaneously modulating skin tension and thus have the potential to improve scar appearance.

Copyright information:

© 2018 The American Society for Aesthetic Plastic Surgery, Inc.

This is an Open Access work distributed under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/).
Export to EndNote