Magnetic mini-mover procedure for pectus excavatum III: Safety and efficacy in a food and drug administration-sponsored clinical trial

Michael R. Harrison, Kelly D. Gonzales, Barbara J. Bratton, Darrell Christensen, Patrick F. Curran, Richard Fechter, Shinjiro Hirose

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Purpose: The magnetic mini-mover procedure (3MP) uses magnetic force to gradually remodel pectus excavatum deformity. A magnet is implanted on the sternum and coupled with an external magnetic brace. Under Investigational Device Exemption and Institutional Review Board approval, we performed a pilot study of safety, probable efficacy, and cost-effectiveness of this new treatment of an orphan disease using an implantable pediatric device. Methods: Ten otherwise healthy patients, ages 8 to 14 years, with severe pectus excavatum (pectus severity index [PSI] > 3.5) underwent 3MP treatment (mean, 18.8 ± 2.5 months). Safety was assessed by postimplant and postexplant electrocardiograms and monthly chest x-rays. Efficacy was assessed by change in pectus severity index as measured using pretreatment and posttreatment computed tomographic scan. Cost of 3MP was compared with that of standard procedures. Results: The 3MP device had no detectable ill effect. Device weld failure or malpositioning required revision in 5 patients. Average wear time was 16 h/d. Pectus severity index improved in patients in the early or mid puberty but not in patients with noncompliant chest walls. Average cost for 3MP was $46,859, compared with $81,206 and $81,022 for Nuss and Ravitch, respectively. Conclusion: The 3MP is a safe, cost-effective, outpatient alternative treatment for pectus excavatum that achieves good results for patients in early and midpuberty stages.

Original languageEnglish (US)
Pages (from-to)154-159
Number of pages6
JournalJournal of Pediatric Surgery
Volume47
Issue number1
DOIs
StatePublished - Jan 1 2012
Externally publishedYes

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Funnel Chest
United States Food and Drug Administration
Clinical Trials
Safety
Costs and Cost Analysis
Equipment and Supplies
Equipment Failure
Braces
Sternum
Magnets
Research Ethics Committees
Thoracic Wall
Puberty
Rare Diseases
Cost-Benefit Analysis
Electrocardiography
Outpatients
Thorax
Therapeutics
X-Rays

Keywords

  • Chest wall deformity
  • Magnetic Mini-Mover
  • Pectus excavatum
  • Pediatric device
  • Sunken chest

ASJC Scopus subject areas

  • Surgery
  • Pediatrics, Perinatology, and Child Health

Cite this

Magnetic mini-mover procedure for pectus excavatum III : Safety and efficacy in a food and drug administration-sponsored clinical trial. / Harrison, Michael R.; Gonzales, Kelly D.; Bratton, Barbara J.; Christensen, Darrell; Curran, Patrick F.; Fechter, Richard; Hirose, Shinjiro.

In: Journal of Pediatric Surgery, Vol. 47, No. 1, 01.01.2012, p. 154-159.

Research output: Contribution to journalArticle

Harrison, Michael R. ; Gonzales, Kelly D. ; Bratton, Barbara J. ; Christensen, Darrell ; Curran, Patrick F. ; Fechter, Richard ; Hirose, Shinjiro. / Magnetic mini-mover procedure for pectus excavatum III : Safety and efficacy in a food and drug administration-sponsored clinical trial. In: Journal of Pediatric Surgery. 2012 ; Vol. 47, No. 1. pp. 154-159.
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