Clinical Trial: Multicenter Trial of Magnetic Mini-Mover for Pectus Excavatum

Study Status: Active, not recruiting
Recruit Status: Active, not recruiting
Study Type: Interventional

Official Title: Phase 3 Multicenter Study of Magnetic Mini-Mover for Pectus Excavatum

Brief Summary: This study is a Phase 3, multicenter, non-randomized study to evaluate the safety and efficacy of the next-generation outpatient Magnetic Mini-Mover Procedure (3MP) in 15 patients aged 8-14 years for the correction of pectus excavatum ('sunken chest'). 3MP for pectus excavatum uses a magnetically coupled implant to pull the sternum forward and gradually remodel the deformed costal cartilage. The Funding Source for this trial is the FDA Office of Orphan Products Development (Grant #R01 FD003341).

Detailed Summary:

Pectus excavatum is the most common congenital chest wall abnormality in children. The investigators have developed a novel method of achieving gradual deformation/reformation of chest wall cartilage. A magnetic force field is used to apply controlled, sustained force to promote biologic reformation of structural cartilage. A magnet is implanted on the sternum and secured through a 2-inch subxiphoid incision as a one-hour outpatient procedure. The magnet (and sternum) is pulled outward by another magnet suspended in a novel, low-profile, lightweight device previously molded to the patient's anterior chest wall. The low-profile, non-obtrusive anterior chest wall prosthesis is held in place by the force field between the two magnets.

In the single-center, FDA-funded trial (IDE G050196), the investigators tested proof of concept, safety and probable benefit of this procedure in 10. In this Phase III multicenter trial, the investigators will further test the safety and efficacy of the procedure in 15 otherwise healthy patients with moderate-to-severe PE, ages 8 to 14. The investigators will be using the next generation Magnimplant device (IDE G090006), a design the investigators believe is much improved in terms of safety and ease of implantation/explantation. Implantation of the Magnimplant will be accomplished in an outpatient procedure. The investigators will document the rate of correction by comparing chest X-ray measurement of the Pectus Severity Index prior to implantation, to that measured after the magnet is removed. Treatment will last 18-24 months, depending on correction and when the patient has completed his or her pubertal growth spurt, as documented by hand x-ray. Explant of the device will be accomplished in an outpatient procedure. The investigators will document safety with an EKG prior to implantation, one month post-implantation, and finally after the magn
Sponsor: Michael Harrison

Current Primary Outcome: Amount of time necessary to correct pectus deformity to a PSI < 3.25 [ Time Frame: 18-24 months after implant ]

Original Primary Outcome: Same as current

Current Secondary Outcome:

• Safety [ Time Frame: During treatment, 18-24 months ]
  All adverse reactions will be recorded and reported to the IRB and the FDA, including complications from implantation of the device,complications from application of the external device over time (e.g., changes in skin; infection; changes in cardiac electrical function).
• Comfort [ Time Frame: During treatment, 18-24 months ]
  Comfort of the external brace directly affects compliance (i.e., bracewear) and compliance will be measured throughout treatment. In addition, the satisfaction of the patient and family will be measured using a standard Quality of Life (QOL) questionnaire administered 1 month after implanting the device and 1 month after removing the device.

Original Secondary Outcome: Same as current

Information By: University of California, San Francisco

Dates:
Date Received: March 30, 2011
Date Started: December 2011
Date Completion: November 2017
Last Updated: May 19, 2016
Last Verified: May 2015